CN116853057B

CN116853057B - Charging method, device, storage medium and vehicle

Info

Publication number: CN116853057B
Application number: CN202310981497.9A
Authority: CN
Inventors: 李新培
Original assignee: Xiaomi Automobile Technology Co Ltd
Current assignee: Xiaomi Automobile Technology Co Ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-04-02
Anticipated expiration: 2043-08-04
Also published as: CN116853057A

Abstract

The disclosure relates to the field of electric automobiles, in particular to a charging method, a charging device, a storage medium and a vehicle, which are used for solving the problem that a fault is easy to report when a charging pile has a delayed output strategy. The charging method comprises the following steps: determining a base request current, the base request current being less than a target charging current of an external charging device connected to the vehicle and less than a target request current of a battery side of the vehicle; according to the basic request current and a preset current value, requesting to switch the charging current of an external charging device connected with the vehicle in a preset switching mode, and determining whether a delay output strategy exists in the external charging device or not according to the voltage change condition of a charging port of the vehicle after the charging current of the external charging device is switched each time, wherein the current value is smaller than the target charging current and smaller than the target request current; in the case where the external charging device does not have the delayed output policy, the external charging device is requested to charge the battery terminal in a constant voltage mode according to the target request current.

Description

Charging method, device, storage medium and vehicle

Technical Field

The disclosure relates to the field of electric automobiles, and in particular relates to a charging method, a charging device, a storage medium and a vehicle.

Background

At present, the new energy electric automobile increases the charging speed, and mostly adopts a direct current charging mode, namely, the energy of a direct current charging pile is transmitted to a high-voltage battery at the vehicle end through a standard direct current charging gun so as to provide energy for the high-voltage battery at the vehicle end. In order to meet the charging requirement of the vehicle battery terminal, the vehicle terminal high-voltage battery can be boosted according to the charging request of the vehicle terminal high-voltage battery so as to boost and charge the vehicle terminal high-voltage battery, and therefore, the charging mode of the vehicle can be divided into direct charging and boosting and charging according to the charging voltage level.

In addition, when the temperature of the high-voltage battery at the vehicle end is lower, in order to ensure enough low-temperature charging property and driving power characteristic of the battery so as not to influence charging and driving, after the direct-current charging gun is inserted, the whole vehicle controller can heat the high-voltage battery at the vehicle end by utilizing the energy of the direct-current charging pile, and in order to improve the heating speed of the high-voltage battery at the vehicle end, the heating request can be boosted. Therefore, direct heating and boost heating can be classified according to the charge voltage level.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a charging method, apparatus, storage medium, and vehicle.

According to a first aspect of embodiments of the present disclosure, there is provided a charging method, including:

determining a base request current that is less than a target charging current of an external charging device connected to a vehicle and less than a target request current of a battery end of the vehicle;

according to the basic request current and a preset current value, requesting to switch the charging current of an external charging device connected with the vehicle in a preset switching mode, and determining whether a delay output strategy exists in the external charging device or not according to the voltage change condition of a charging port of the vehicle after the charging current of the external charging device is switched each time, wherein the current value is smaller than the target charging current and smaller than the target request current;

and in the case that the external charging device does not have the delayed output strategy, requesting the external charging device to charge the battery terminal in a constant voltage mode according to the target request current.

Optionally, the step of requesting to switch the charging current of the external charging device connected to the vehicle through a preset switching manner according to the base request current and a preset current value, and determining whether the external charging device has a delayed output policy according to a voltage change condition of a charging port of the vehicle after each switching of the charging current of the external charging device includes:

Requesting the external charging device to output a first charging current according to the basic request current, and determining a first voltage of the charging port in the case that the external charging device outputs the first charging current;

requesting the external charging device to output a second charging current according to the sum of the basic request current and the preset current value, and determining a second voltage of the charging port under the condition that the external charging device outputs the second charging current;

determining whether the voltage of the charging port drops or not according to the first voltage, the second voltage and a preset voltage threshold;

and under the condition that the voltage of the charging port drops, determining that the external charging device has the delayed output strategy.

Optionally, the method further comprises:

requesting the external charging device to output a third charging current according to the basic request current when the voltage of the charging port does not drop, and determining a third voltage of the charging port when the external charging device outputs the third charging current;

requesting the external charging device to output a fourth charging current according to the sum of the basic request current and the preset current value, and determining a fourth voltage of the charging port under the condition that the external charging device outputs the fourth charging current;

Determining whether the voltage of the charging port drops according to the third voltage, the fourth voltage and the voltage threshold;

and determining that the external charging device has the delay output strategy under the condition that the voltage of the charging port is determined to drop according to the third voltage, the fourth voltage and the voltage threshold value.

Optionally, the method further comprises:

requesting the external charging device to output a fifth charging current according to the basic request current when the voltage of the charging port does not drop, and determining a fifth voltage of the charging port when the external charging device outputs the fifth charging current;

lifting the preset current value through a preset lifting mode to obtain a target current value;

requesting the external charging device to output a sixth charging current according to the sum of the base request current and the target current value, and determining a sixth voltage of the charging port in the case that the external charging device outputs the sixth charging current;

determining whether the voltage of the charging port drops according to the fifth voltage, the sixth voltage and the voltage threshold;

Optionally, the method further comprises:

determining that the voltage of the charging port does not drop according to the first voltage, the second voltage and a preset voltage threshold value, and determining the duration of time when the voltage of the charging port does not drop;

determining whether the duration is greater than a preset duration;

and under the condition that the duration is longer than the preset duration, determining that the external charging device does not have the delay output strategy.

Optionally, the method further comprises:

and under the condition that the external charging device is determined to have the delayed output strategy, after the voltage of the charging port stops dropping, requesting the external charging device to charge the battery terminal in the constant voltage mode according to the target request current.

Optionally, the requesting the external charging device to charge the battery terminal in the constant voltage mode according to the target request current of the vehicle when the external charging device does not have the delayed output policy includes:

and controlling a battery management system of the vehicle to request the external charging device to output the target request current so that the external charging device performs direct current charging on the battery terminal in a constant voltage mode.

According to a second aspect of embodiments of the present disclosure, there is provided a charging device including:

a first determination module configured to determine a base request current that is less than a target charging current of an external charging device connected to a vehicle and less than a target request current of a battery terminal of the vehicle;

a second determining module configured to request to switch a charging current of an external charging device connected to the vehicle through a preset switching manner according to the basic request current and a preset current value, and determine whether a delayed output strategy exists in the external charging device through a voltage change condition of a charging port of the vehicle after each switching of the charging current of the external charging device, wherein the current value is smaller than the target charging current and smaller than the target request current;

and the charging module is configured to request the external charging device to charge the battery terminal in a constant voltage mode according to a target request current required by the vehicle when the delay output strategy does not exist in the external charging device.

According to a third aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the charging method according to the first aspect of the present disclosure.

According to a fourth aspect of embodiments of the present disclosure, there is provided a vehicle comprising:

a memory having a computer program stored thereon;

a processor for executing a computer program in memory to implement the steps of the charging method of the first aspect.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the method comprises the steps of requesting to control the charging current of an external charging device connected with a vehicle to switch between a preset basic request current and a current value through a preset switching mode, determining whether the external charging device has a delayed output strategy according to the voltage change condition of a charging port of the vehicle after each switch, and requesting the external charging device to charge a battery terminal in a constant voltage mode according to a target request current under the condition that the external charging device does not have the delayed output strategy. Therefore, the problem that the charging current cannot be immediately output when the charging pile has a delayed output strategy, and the vehicle end immediately requests the high-voltage accessory to work to pull the voltage of the charging port down, so that the direct-current charging pile end reports faults can be avoided. In addition, the existing charging structure and circuit of the vehicle are multiplexed, the compatibility of the vehicle to the charging pile can be improved by adding the judging control strategy, additional hardware change is not needed, additional hardware equipment is not needed, the economic cost and time cost of vehicle charging are reduced, and the user experience is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a block diagram illustrating a direct current direct heating electrical block diagram according to an exemplary embodiment.

Fig. 2 is an electrical block diagram illustrating a dc boost heating according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating a delayed output pile fault procedure in a dc heating scenario according to an exemplary embodiment.

Fig. 4 is a flow chart illustrating a charging method according to an exemplary embodiment.

Fig. 5 is a flowchart illustrating a charging method according to another exemplary embodiment.

Fig. 6 is a block diagram illustrating a charging device according to an exemplary embodiment.

Fig. 7 is a block diagram of an electronic device, according to an example embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The inventor researches and discovers that in the direct current direct charging and direct current boost charging scene of the vehicle, when a standard direct current gun is inserted into a charging port of the vehicle, a charging pile realizes message interaction with a BMS (Battery Management System ) of the vehicle through a CAN, and the message interaction flow CAN refer to GBT 27930, which is not repeated here. After the message interaction between the vehicle and the charging pile is completed, the charging pile can output energy to charge and/or heat the battery at the vehicle end.

In the related art, as shown in fig. 1, a direct heating scenario is shown, a high-voltage battery of a vehicle is directly connected to a charging port through charging relays K5 and K6, the high-voltage battery is disconnected, and the charging port is connected to a direct-current charging pile through a direct-current charging gun. When the vehicle/pile completes information handshake and identification, the direct current charging relays K5 and K6 are closed, and a BRO message is fed back, and after the charging pile terminal receives the message information, the charging pile terminal relays K1 and K2 are closed, and the CRO message is fed back. After the vehicle receives the CRO message, the charging pile is requested to enter a constant voltage mode through the BCL message, and charging voltage is output to work with the high-voltage accessory. The direct-current charging pile can ensure the voltage stability of the direct-current charging port through working in a constant-voltage mode, and after the high-voltage accessory is started, the direct-current charging pile outputs energy based on the power consumption requirement of the high-voltage accessory to provide power for the high-voltage accessory.

Aiming at the scene that the maximum output voltage of the direct-current charging pile is smaller than the working voltage of the high-voltage accessory at the vehicle end, the output voltage of the direct-current charging pile needs to be boosted to the working voltage of the high-voltage accessory, and then power is provided for the high-voltage accessory based on load requirements. The boosting heating scene is shown in fig. 2, and the boosting heating circuit mainly comprises a boost circuit and an EDS circuit. The boost circuit comprises a relay and a filter circuit for controlling the on-off state between the vehicle and the charging pile, and the EDS circuit multiplexes the motor control inverter circuit. After the direct-current charging gun is connected with the charging pile in an inserted mode, if a high-voltage battery of a vehicle needs to be heated, the vehicle end can stabilize the voltage of the direct-current charging port within the working voltage range of the high-voltage accessory by coordinating the working states of the direct-current charging pile, the boost circuit and the EDS circuit, and when the high-voltage accessory starts to work, the direct-current charging pile can start to output energy to supply power for the high-voltage accessory.

However, because the direct current charging pile does not have a completely unified standard, based on the protection of the charging pile, part of direct current charging piles on the market have a delayed output strategy, namely after the relays K1 and K2 of the charging pile are closed, if the current charging state is judged to not meet the safe charging condition of the charging pile according to the request current of the vehicle, the heating current is delayed to be output, the vehicle end often immediately controls the high-voltage accessory to work after the high-voltage bus voltage is established, at the moment, the high-voltage accessory can pull down the voltage of the charging port, and when the degree of the pulled down voltage of the charging pile exceeds the safe fluctuation range of the charging pile, the charging pile is in a fault or the high-voltage accessory at the vehicle end can be in a fault of reporting the undervoltage. Under such a condition, the charging pile cannot be used for charging the vehicle continuously, and a user needs to replace other direct-current charging piles without delay output to realize the gun inserting heating function, so that the user experience is affected.

For example, fig. 3 is a schematic diagram illustrating a delayed output pile error reporting procedure in a dc heating scenario according to an exemplary embodiment. As shown in fig. 3, when the vehicle/pile completes the information handshake and identification, the vehicle enters a charging ready state and feeds back a BRO message, and the charging pile terminal also enters the charging ready state and feeds back the BRO message after receiving the BRO message information. After the vehicle receives the CRO message, the charging pile is requested to enter a constant voltage mode through the BCL message, then a CCS signal is sent and voltage is output, and the vehicle immediately requests the high-voltage accessory to work after receiving the CCS signal. If the charging pile has a delay output strategy, the delay output strategy is executed at the moment, the voltage cannot be immediately output, the vehicle immediately controls the high-voltage accessory to work, the voltage of the charging port is pulled down by the high-voltage accessory at the moment, and then error reporting is carried out and the charging process is finished.

Fig. 4 is a flowchart illustrating a charging method according to an exemplary embodiment, including the following steps, as shown in fig. 4.

In step S101, a base request current is determined, the base request current being smaller than a target charging current of an external charging device connected to the vehicle and smaller than a target request current of a battery side of the vehicle.

In step S102, according to the basic request current and the preset current value, the charging current of the external charging device connected to the vehicle is requested to be switched through the preset switching mode, and after the charging current of the external charging device is switched each time, the voltage change condition of the charging port of the vehicle is determined whether the external charging device has a delayed output strategy, and the current value is smaller than the target charging current and smaller than the target request current.

In step S103, in the case where the external charging device does not have the delayed output policy, the external charging device is requested to charge the battery terminal in the constant voltage mode according to the target request current.

It should be understood that, if the external charging device has a delayed output policy, when it is determined that the current charging state does not meet the safe charging condition of the external charging device according to the request current of the battery end of the vehicle, the external charging device executes the delayed output policy, i.e. delays outputting the heating current, and cannot immediately output the heating current. Since in a scenario of charging a vehicle using an external charging device, a user cannot directly determine whether the external charging device has a delayed output policy and the specific content and delay time length of the delayed output policy according to the available external charging device information.

Therefore, the charging current of the external charging device connected with the vehicle can be requested to be switched through a preset switching mode so as to generate waiting time to determine whether the external charging device can execute the delayed output strategy, if the external charging device does not execute the delayed output strategy, the external charging device is indicated that the delayed output strategy does not exist, and at the moment, the external charging device can be requested to charge the battery terminal in a constant voltage mode according to the target request current.

In addition, when the external charging device executes the delayed output strategy, the external charging device cannot immediately output the heating current, so that the voltage of the charging port drops, and whether the external charging device has the delayed output strategy can be determined according to the voltage change condition of the charging port of the vehicle after the charging current of the external charging device is switched every time.

It should also be appreciated that the external charging device may be a charging stake or other device for powering a vehicle, as embodiments of the present disclosure are not limited in this regard. For ease of understanding, the present application will be described below with reference to a charging stake.

For example, the base request current may be 0A, and when the charging current of the charging pile to which the vehicle is connected is requested to be switched to 0A, it may be considered that the vehicle does not need the charging pile output power at this time, and thus the base request current may also be a smaller value that is smaller than the target charging current of the charging pile and smaller than the target request current of the battery end of the vehicle, and when the charging current of the charging pile to which the vehicle is connected is requested to be switched to the smaller value, the power output by the charging pile is almost 0. The preset current value may be a value that is greater than the base request current, less than the target charging current of the charging stake, and less than the target request current of the battery end of the vehicle. Since the charging current of the external charging device connected with the vehicle needs to be requested to be switched through a preset switching mode, the fluctuation range of the voltage of the charging port caused by the switching of the charging current can be considered when the preset current value is determined, so that the fluctuation range of the voltage of the charging port is ensured to be in a proper range after the charging current is switched for each request. The setting mode and the basis of the basic request current and the preset current value in the embodiment of the disclosure are not particularly limited.

According to the technical scheme, the charging current of the external charging device connected with the vehicle is requested to be controlled to switch between the preset basic request current and the current value through the preset switching mode, whether the external charging device has a delayed output strategy or not is determined according to the voltage change condition of the charging port of the vehicle after each switch, and the external charging device is requested to charge the battery terminal in a constant voltage mode according to the target request current under the condition that the external charging device does not have the delayed output strategy. Therefore, the problem that the charging current cannot be immediately output when the charging pile has a delayed output strategy, and the vehicle end immediately requests the high-voltage accessory to work to pull the voltage of the charging port down, so that the direct-current charging pile end reports faults can be avoided. In addition, the existing charging structure and circuit of the vehicle are multiplexed, the compatibility of the vehicle to the charging pile can be improved by adding the judging control strategy, additional hardware change is not needed, additional hardware equipment is not needed, the economic cost and time cost of vehicle charging are reduced, and the user experience is improved.

In a possible manner, according to the basic request current and the preset current value, the charging current of the external charging device connected with the vehicle is requested to be switched through the preset switching manner, and after the charging current of the external charging device is switched each time, the voltage change condition of the charging port of the vehicle determines whether the external charging device has a delayed output strategy, which may be:

Requesting the external charging device to output a first charging current according to the basic request current, and determining a first voltage of the charging port under the condition that the external charging device outputs the first charging current;

requesting the external charging device to output a second charging current according to the sum of the basic request current and a preset current value, and determining a second voltage of the charging port under the condition that the external charging device outputs the second charging current;

and under the condition that the voltage of the charging port drops, determining that the external charging device has a delayed output strategy.

It should be appreciated that since the charging pile charging current is output based on the vehicle request base request current, the first charging current may be equal to or close to the base request current. The second charging current, the third charging current, the fourth charging current, the fifth charging current, and the sixth charging current in the following embodiments are the same.

Alternatively, the base request current may be taken as an initial value, and the external charging device is first requested to output the charging current according to the base request current, and then the external charging device is requested to output the charging current according to the sum value of the base request current and the preset current value, that is, the charging current of the external charging device connected to the vehicle is requested to be switched once between the base request current and the sum value of the base request current and the preset current value. And obtaining a first voltage and a second voltage of the charging port, then determining a difference value between the first voltage and the second voltage, and determining whether the voltage of the charging port drops or not under the condition that the difference value is larger than a preset voltage threshold value, namely, a delay output strategy exists in an external charging device.

In addition, it should be noted that, since the sum of the base request current and the preset current value is greater than the base request current, the voltage of the charging port drops when the switching is performed, regardless of whether the external charging device has a delayed output strategy. However, if the external charging device has a delayed output strategy, the charging pile delays outputting the request current, and the voltage drop value of the charging port is larger than the drop value when the external charging device does not have the delayed output strategy, so that the judgment can be performed through a preset voltage threshold.

In a possible manner, the method further comprises:

requesting the external charging device to output a fourth charging current according to the sum of the basic request current and a preset current value, and determining a fourth voltage of the charging port under the condition that the external charging device outputs the fourth charging current;

And under the condition that the voltage of the charging port is determined to drop according to the third voltage, the fourth voltage and the voltage threshold value, determining that the external charging device has a delayed output strategy.

It should be understood that, since the charging current is still output after the execution of the delayed output strategy of the charging pile is finished, after the charging current of the charging pile is switched between the base request current and the sum of the base request current and the preset current value, if the voltage of the charging port does not drop, the charging current of the charging pile can be continuously requested to be switched between the base request current and the sum of the base request current and the preset current value multiple times. And under the condition that the charging current output by the charging pile after each switching is the requested charging current, determining the voltage of the charging port, and then determining whether the voltage of the charging port drops or not according to the voltage value and the voltage threshold value of the charging port after each switching. And stopping switching until the voltage of the charging port drops according to the voltage value and the voltage threshold value of the charging port after a certain switching, determining that the voltage of the charging port drops, and determining that the external charging device has a delayed output strategy.

In a possible manner, the method further comprises:

a preset current value is lifted through a preset lifting mode, and a target current value is obtained;

requesting the external charging device to output a sixth charging current according to the sum of the basic request current and the target current value, and determining a sixth voltage of the charging port in the case that the external charging device outputs the sixth charging current;

For example, in order to improve efficiency, when the charging current of the charging pile is requested to be switched between the basic request current and the sum of the basic request current and the preset current value for one or more times, the preset current value may be lifted and the charging current of the external charging device connected to the vehicle may be requested to be switched in a preset switching manner according to the basic request current and the lifted target current value, if the voltage of the charging port does not drop. Such as continuing to request the charging current of the charging stake to switch one or more times between the base request current and the sum of the base request current and the target current value.

For example, the lifting manner may be to take a preset current value as an initial value and take a preset current value as a step length to gradually increase. After the charging current of the charging pile is switched for multiple times between the first target current value after the charging current is lifted once according to the basic request current, the charging port can be lifted for multiple times again according to a preset lifting mode under the condition that the voltage of the charging port is not dropped.

It should be noted that, after the preset current value is raised, the charging current of the external charging device connected to the vehicle may be requested to be switched in the same switching manner as before the raising, which will not be described herein.

In a possible manner, the method further comprises:

in response to determining that the voltage of the charging port does not drop according to the first voltage, the second voltage and a preset voltage threshold, determining the duration of time when the voltage of the charging port does not drop;

determining whether the duration is greater than a preset duration;

and under the condition that the duration is longer than the preset duration, determining that the external charging device does not have a delayed output strategy.

It should be understood that, in general, in order to ensure the charging efficiency of charging, the time for the charging post to execute its delayed output strategy is not too long, typically 10 to 20 seconds. Therefore, the preset time period may be set, and when it is determined that the voltage of the charging port does not drop according to the first voltage, the second voltage, and the preset voltage threshold, the time period for which the voltage of the charging port does not drop is determined. And determining whether the time length is longer than a preset time length, and determining that the external charging device does not have a delayed output strategy under the condition that the time length is longer than the preset time length.

In another possible manner, the method further comprises:

and under the condition that the external charging device is determined to have a delayed output strategy, after the voltage of the charging port stops dropping, requesting the external charging device to charge the battery terminal in a constant voltage mode according to the target request current.

It should be understood that after the delayed output strategy of the charging pile is finished, the charging current is still output, and the voltage of the charging port stops dropping. Therefore, when the external charging device is determined to have the delayed output strategy, and when the voltage of the charging port stops dropping, the delayed output strategy execution of the charging pile is determined to be ended, and the external charging device can be requested to charge the battery terminal in a constant voltage mode according to the target request current at any time after the voltage of the charging port stops dropping.

For example, the external charging device may be immediately requested to charge the battery terminal in the constant voltage mode according to the target request current when it is determined that the execution of the delayed output strategy of the charging pile is finished, or may start timing when the voltage of the charging port stops dropping, and request the external charging device to charge the battery terminal in the constant voltage mode according to the target request current when the duration of the voltage stop dropping of the charging port is longer than the preset duration. The embodiments of the present disclosure are not limited in this regard.

Since the sum of the basic request current and the preset current value is larger than the basic request current, the voltage of the charging port drops when the switching is performed regardless of whether the external charging device has a delayed output strategy. However, if the external charging device has a delayed output strategy, the charging pile delays outputting the request current, and the voltage drop value of the charging port is larger than the drop value when the external charging device does not have the delayed output strategy, so that the judgment can be performed through a preset voltage threshold.

In a possible manner, in a case where the external charging device does not have the delayed output policy, the method for requesting the external charging device to charge the battery terminal in the constant voltage mode according to the target request current of the vehicle includes:

the battery management system of the control vehicle requests an output of a target request current to the external charging device so that the external charging device performs direct current charging on the battery terminal in a constant voltage mode.

It should be understood that the battery terminal may be charged in a constant voltage mode by controlling the battery management system of the vehicle to perform message interaction with the external charging device according to the target request current, requesting the external charging device to output the target request current through the BCL message. In addition, the external charging device may also request to output a heating current to charge the battery terminal, which is not limited by the embodiments of the present disclosure.

Fig. 5 is a flowchart illustrating a charging method according to an exemplary embodiment, including the following steps, as shown in fig. 5.

Step S201, a base request current is determined, the base request current being smaller than a target charging current of an external charging device connected to the vehicle and smaller than a target request current of a battery terminal of the vehicle.

Step S202, according to the basic request current, the external charging device is requested to output a first charging current, and a first voltage of the charging port is determined under the condition that the external charging device outputs the first charging current.

Step S203, requesting the external charging device to output a second charging current according to the sum of the base request current and the preset current value, and determining a second voltage of the charging port when the external charging device outputs the second charging current.

Step S204, determining whether the voltage of the charging port drops according to the first voltage, the second voltage and a preset voltage threshold. If the voltage at the charging port drops, step S213 is performed, otherwise step S202, step 205, or step S210 is performed.

Step S205, according to the basic request current, requests the external charging device to output the fifth charging current, and determines the fifth voltage of the charging port in the case where the external charging device outputs the fifth charging current.

Step S206, a preset current value is increased through a preset increasing mode, and a target current value is obtained.

Step S207, requesting the external charging device to output a sixth charging current according to the sum of the base request current and the target current value, and determining a sixth voltage of the charging port in the case where the external charging device outputs the sixth charging current.

Step S208, determining whether the voltage of the charging port drops according to the fifth voltage, the sixth voltage and the voltage threshold. If the voltage of the charging port drops, step S213 is executed, otherwise step S205 is returned to or step S209 is executed.

In step S209, a duration for which the voltage of the charging port does not drop is determined.

Step S210, determining whether the duration is greater than a preset duration. If the time period is longer than the preset time period, step S211 is executed, otherwise, step S205 is returned to.

Step S211, determining that the external charging device has a delayed output policy.

In step S212, after the voltage of the charging port stops dropping, the external charging device is requested to charge the battery terminal in a constant voltage mode according to the target request current.

Step S213, it is determined that the external charging device does not have a delayed output policy.

In step S214, the external charging device is requested to charge the battery terminal in a constant voltage mode according to the target request current.

Further, after the charging current of the charging pile is requested to be switched one or more times, the preset current value can be increased under the condition that no drop still occurs, and the switching can be continued according to the increased current value. And when the voltage of the charging port does not drop, determining the duration of the voltage of the charging port, and judging whether the external charging device has a delayed output strategy or not by combining a preset duration threshold. Therefore, the flexibility of the judgment strategy can be improved, and the charging efficiency is improved.

Fig. 6 is a block diagram illustrating a charging device according to an exemplary embodiment. Referring to fig. 6, the charging apparatus 300 includes a first determination module 301, a second determination module 302, and a charging module 303.

A first determination module 301 configured to determine a base request current that is smaller than a target charging current of an external charging device connected to a vehicle and smaller than a target request current of a battery terminal of the vehicle;

a second determining module 302, configured to request to switch a charging current of an external charging device connected to the vehicle through a preset switching manner according to the base request current and a preset current value, and determine whether a delayed output strategy exists in the external charging device through a voltage change condition of a charging port of the vehicle after each switching of the charging current of the external charging device, where the current value is smaller than the target charging current and smaller than the target request current;

and a charging module 303 configured to request the external charging device to charge the battery terminal in a constant voltage mode according to a target request current required by the vehicle, in the case where the delayed output policy does not exist in the external charging device.

Optionally, the second determining module 302 is configured to:

Optionally, the charging device 300 further includes:

a third determining module configured to request the external charging device to output a third charging current according to the base request current in a case where a drop in the voltage of the charging port does not occur, and determine a third voltage of the charging port in a case where the external charging device outputs the third charging current;

A fourth determining module configured to request the external charging device to output a fourth charging current according to a sum of the base request current and the preset current value, and determine a fourth voltage of the charging port in a case where the external charging device outputs the fourth charging current;

a fifth determining module configured to determine whether a voltage of the charging port drops according to the third voltage, the fourth voltage, and the voltage threshold;

a sixth determination module configured to determine that the external charging device has the delayed output policy if it is determined that the voltage of the charging port drops according to the third voltage, the fourth voltage, and the voltage threshold.

Optionally, the charging device 300 further includes:

a seventh determining module configured to request the external charging device to output a fifth charging current according to the base request current in a case where a drop in the voltage of the charging port does not occur, and determine a fifth voltage of the charging port in a case where the external charging device outputs the fifth charging current;

the lifting module is configured to lift the preset current value through a preset lifting mode to obtain a target current value;

An eighth determination module configured to request the external charging device to output a sixth charging current according to a sum of the base request current and the target current value, and determine a sixth voltage of the charging port in a case where the external charging device outputs the sixth charging current;

a ninth determination module configured to determine whether a voltage of the charging port drops according to the fifth voltage, the sixth voltage, and the voltage threshold;

a tenth determination module configured to determine that the external charging device has the delayed output policy in the event of a drop in the voltage of the charging port.

Optionally, the charging device 300 further includes:

an eleventh determining module configured to determine, in response to determining that the voltage of the charging port has not dropped according to the first voltage, the second voltage, and a preset voltage threshold, a duration for which the voltage of the charging port has not dropped;

a twelfth determining module configured to determine whether the duration is greater than a preset duration;

a thirteenth determination module configured to determine that the delayed output policy does not exist for the external charging device if the duration is greater than the preset duration.

Optionally, the charging device 300 further includes:

Optionally, the charging module 303 is configured to:

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

The present disclosure also provides a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the charging method provided by the present disclosure.

The present disclosure also provides a vehicle including:

a memory having a computer program stored thereon;

and a processor for executing the computer program in the memory to implement the steps of the charging method provided by the present disclosure.

Fig. 7 is a block diagram of an electronic device, according to an example embodiment. For example, the electronic device 800 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 7, an electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the electronic device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the charging method described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 806 provides power to the various components of the electronic device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the electronic device 800.

The multimedia component 808 includes a screen between the electronic device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the electronic device 800 is in an operational mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

Input/output interface 812 provides an interface between processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the electronic device 800. For example, the sensor assembly 814 may detect an on/off state of the electronic device 800, a relative positioning of the components, such as a display and keypad of the electronic device 800, the sensor assembly 814 may also detect a change in position of the electronic device 800 or a component of the electronic device 800, the presence or absence of a user's contact with the electronic device 800, an orientation or acceleration/deceleration of the electronic device 800, and a change in temperature of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the electronic device 800 and other devices, either wired or wireless. The electronic device 800 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the electronic device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for performing the above-described charging methods.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of electronic device 800 to perform the above-described charging method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

The apparatus may be a stand-alone electronic device or may be part of a stand-alone electronic device, for example, in one embodiment, the apparatus may be an integrated circuit (Integrated Circuit, IC) or a chip, where the integrated circuit may be an IC or may be a collection of ICs; the chip may include, but is not limited to, the following: GPU (Graphics Processing Unit, graphics processor), CPU (Central Processing Unit ), FPGA (Field Programmable Gate Array, programmable logic array), DSP (Digital Signal Processor ), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), SOC (System on Chip, SOC, system on Chip or System on Chip), etc. The integrated circuit or chip may be configured to execute executable instructions (or code) to implement the charging method described above. The executable instructions may be stored on the integrated circuit or chip or may be retrieved from another device or apparatus, such as the integrated circuit or chip including a processor, memory, and interface for communicating with other devices. The executable instructions may be stored in the memory, which when executed by the processor implement the charging method described above; alternatively, the integrated circuit or chip may receive executable instructions through the interface and transmit the executable instructions to the processor for execution to implement the charging method described above.

In another exemplary embodiment, a computer program product is also provided, comprising a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described charging method when executed by the programmable apparatus.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A charging method, comprising:

requesting the external charging device to charge the battery terminal in a constant voltage mode according to the target request current under the condition that the external charging device does not have the delay output strategy;

the step of determining whether a delayed output strategy exists in the external charging device according to the basic request current and the preset current value, by requesting to switch the charging current of the external charging device connected with the vehicle in a preset switching mode, and by switching the charging current of the external charging device each time, the voltage change condition of the charging port of the vehicle comprises the following steps:

2. The method as recited in claim 1, further comprising:

3. The method as recited in claim 1, further comprising:

4. A method according to claim 2 or 3, further comprising:

determining whether the duration is greater than a preset duration;

5. A method according to any one of claims 1-3, further comprising:

6. The method according to claim 1, wherein the requesting the external charging device to charge the battery terminal in a constant voltage mode according to a target request current of the vehicle in the absence of a delayed output policy by the external charging device comprises:

7. A charging device, characterized by comprising:

a charging module configured to request the external charging device to charge the battery terminal in a constant voltage mode according to a target request current required by the vehicle in the case where the delay output policy does not exist in the external charging device;

The second determination module is configured to:

8. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the method of any of claims 1-6.

9. A vehicle, characterized by comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-6.