CN104709104A - Method and system for rapidly switching battery packs of electric vehicle - Google Patents
Method and system for rapidly switching battery packs of electric vehicle Download PDFInfo
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- CN104709104A CN104709104A CN201510067192.2A CN201510067192A CN104709104A CN 104709104 A CN104709104 A CN 104709104A CN 201510067192 A CN201510067192 A CN 201510067192A CN 104709104 A CN104709104 A CN 104709104A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention provides a method and system for rapidly switching battery packs of an electric vehicle. The method comprises the steps that the first battery pack and the second batter pack which can be independently used as a power source are arranged on the electric vehicle, the output end of the first battery pack and the output end of the second battery pack are connected in parallel, and when the SOC of the first battery pack supplying power currently is smaller than a preset threshold value, the second battery pack supplies power through switching. By the adoption of the method and system for rapidly switching the battery packs of the electric vehicle, the problem that in the prior art, the mileage of the electric vehicle is short is effectively solved.
Description
Technical field
The present invention relates to electric vehicle devices field, particularly relate to quick change method and the quick-change system of battery of electric vehicle bag.
Background technology
In prior art, battery-driven car mainly installs an electrokinetic cell on chassis, when the chassis electrokinetic cell SOC (abbreviation of State of Charge, refer to the ratio of charging capacity and rated capacity, represent with percentum) too low when cannot work, then normally cannot work, cause the travelled distance of battery-driven car short.
And, need to charge for a long time to the electrokinetic cell of battery-driven car, the waste plenty of time.
Summary of the invention
The quick change method of the battery of electric vehicle bag that the object of the invention is to provide a kind of travelled distance solving battery-driven car short and quick-change system.
To achieve these goals, according to an aspect of the present invention, provide a kind of quick change method of battery of electric vehicle bag, comprising: configuration can independently as the first power brick and second power brick of electrical source of power on battery-driven car; The mouth of described first power brick and the mouth of described second power brick are connected in parallel; When the SOC of the first power brick of current power supply is less than predetermined threshold, is switched to described second power brick and powers.
Further, described first power brick and described second power brick all comprise multiple module that can dismantle separately, and each described module can charge separately under family's power utilization environment.
Further, the outlet internal line of described first power brick is provided with the first main positive relay, the described first main positive relay the first diode in parallel; The outlet internal line of described second power brick is provided with the second main positive relay, the described second main positive relay the second diode in parallel; When described first power brick is powered, the described first main positive relay closes, the described second main positive relay disconnects.
Further, be in the condition of motoring condition at described battery-driven car under, described in be switched to the step that described second power brick carries out powering and comprise: the described first main positive relay disconnects, and described first power brick is by described first diode supplying power for outside; Described second main positive relay closes, described second power brick is by the described second main positive relay supplying power for outside; Be greater than the condition of the voltage of described first power brick at the voltage of described second power brick under, described first diode of one-way conduction disconnects.
Further, after the step that described first diode of one-way conduction disconnects, also comprise: make the low-pressure system of described first power brick enter park mode by gateway controller.
Further, be in the condition of dead ship condition at described battery-driven car under, describedly be switched to the step that described second power brick carries out powering and comprise: make the low-pressure system of described first power brick enter park mode by gateway controller, in described battery-driven car restart procedure, start the low-pressure system of described second power brick and the low-pressure system of the first power brick described in No starting, thus power by means of only described second power brick.
According to another aspect of the present invention, provide a kind of quick-change system of battery of electric vehicle bag, comprise: can independently as the first power brick and second power brick of electrical source of power, be configured on battery-driven car, the mouth of described first power brick and the mouth of described second power brick are connected in parallel; Switch unit, for: when the SOC of the first power brick of current power supply is less than predetermined threshold, is switched to described second power brick and powers.
Further, described first power brick and described second power brick all comprise multiple module that can dismantle separately, and each described module can charge separately under family's power utilization environment.
Further, the outlet internal line of described first power brick is provided with the first main positive relay, the described first main positive relay the first diode in parallel; The outlet internal line of described second power brick is provided with the second main positive relay, the described second main positive relay the second diode in parallel; When described first power brick is powered, the described first main positive relay closes, the described second main positive relay disconnects.
Further, be in the condition of motoring condition at described battery-driven car under, described switch unit specifically for: described first main positive relay is disconnected, and described first power brick is by described first diode supplying power for outside; Make the described second main positive relay closes, described second power brick is by the described second main positive relay supplying power for outside; Be greater than the condition of the voltage of described first power brick at the voltage of described second power brick under, described first diode of one-way conduction disconnects; Be in the condition of dead ship condition at described battery-driven car under, described switch unit specifically for: make the low-pressure system of described first power brick enter park mode by gateway controller, in described battery-driven car restart procedure, start the low-pressure system of described second power brick and the low-pressure system of the first power brick described in No starting, thus power by means of only described second power brick.
Battery-driven car configures two electrical source of power, and two electrical source of power are in parallel, when an electrical source of power (the first power brick is generally preferential electrical source of power) electricity is too low, be switched to another one electrical source of power (the second power brick is generally reserve power power supply) work, effectively can increase the continual mileage of battery-driven car like this.
According to hereafter by reference to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present invention more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present invention with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the schematic diagram of the quick change method of battery of electric vehicle bag according to an embodiment of the invention;
Fig. 2 is the schematic diagram of the step S30 of the quick change method of the bag of battery of electric vehicle shown in Fig. 1;
Fig. 3 is the schematic diagram of the quick-change system of battery of electric vehicle bag according to an embodiment of the invention;
Fig. 4 is the topological diagram of the first power brick of the quick-change system of the bag of battery of electric vehicle shown in Fig. 3;
Fig. 5 is the topological diagram of the second power brick of the quick-change system of the bag of battery of electric vehicle shown in Fig. 3;
Fig. 6 is the structural representation of the first power brick of the quick-change system of the bag of battery of electric vehicle shown in Fig. 3.
Detailed description of the invention
Fig. 1 is the schematic diagram of the quick change method of battery of electric vehicle bag according to an embodiment of the invention.The quick change method of the battery of electric vehicle bag of the present embodiment, comprises the following steps:
S10: configuration can independently as the first power brick and second power brick of electrical source of power on battery-driven car; The mouth of the first power brick and the mouth of the second power brick are connected in parallel.
S20: judge whether the SOC of the first power brick of current power supply is less than predetermined threshold.
S30: when the SOC of the first power brick of current power supply is less than predetermined threshold, is switched to the second power brick and powers.If the SOC of the first power brick of current power supply is greater than predetermined threshold, continue to perform step S30.
Wherein, SOC is the abbreviation of State of Charge, refers to the ratio of charging capacity and rated capacity, represents with percentum.Battery has rated capacity, charges the regular hour under certain multiplying power, can obtain charging capacity, and the ratio of charging capacity and rated capacity is SOC.Predetermined threshold can carry out setting or setting according to avoiding power brick electricity to use up damage battery according to the minimum output electricity of power brick, generally, is set as between 5%-8% by predetermined threshold.
Battery-driven car configures two electrical source of power, and two electrical source of power are in parallel, when an electrical source of power (the first power brick is generally preferential electrical source of power) electricity is too low, be switched to another one electrical source of power (the second power brick is generally reserve power power supply) work, effectively can increase the continual mileage of battery-driven car like this.
Consider quick-replaceable and the charging of power brick, the quick change method of the present embodiment also comprises: the first power brick and the second power brick all comprise multiple module that can dismantle separately, and each module can charge separately under family's power utilization environment.
By n (n >=1, and be integer) module composition in first power brick and the second power brick, module is connected by quick connector with Battery case, facilitates module quick-replaceable, and each module weight guarantee adult normally moves and changes.Each module can charge separately at home, convenient and swift safety.
The quick change method of the present embodiment also comprises: the outlet internal line of the first power brick is provided with the first main positive relay, the first main positive relay the first diode in parallel.The outlet internal line of the second power brick is provided with the second main positive relay, the second main positive relay the second diode in parallel.When the first power brick is powered, the first main positive relay closes, the second main positive relay disconnects.First diode and the second diode are the diode that low pressure drop exceeds current mode, and Main Function is reverse counnter attack and forward conduction effect.
The present embodiment further preferably, is optimized the step that switching power brick is powered, and see Fig. 2, in the step process that switching power brick is powered, first needs to detect battery-driven car and is in motoring condition or dead ship condition.Wherein, be in the condition of motoring condition at battery-driven car under, be switched to the step that the second power brick carries out powering and comprise:
S41: the first main positive relay disconnects, and the first power brick is by the first diode supplying power for outside;
S42: the second main positive relay closes, the second power brick is by the second main positive relay supplying power for outside; Be greater than the condition of the voltage of the first power brick at the voltage of the second power brick under, the first diode of one-way conduction disconnects.
S43: make the low-pressure system of the first power brick enter park mode by gateway controller.
And when battery-driven car is under the condition of dead ship condition, is switched to the step that the second power brick carries out powering and comprises:
S51: make the low-pressure system of the first power brick enter park mode by gateway controller, in battery-driven car restart procedure, start the low-pressure system of the second power brick and the low-pressure system of No starting first power brick, thus power by means of only the second power brick.
Present invention also offers a kind of embodiment of quick-change system of battery of electric vehicle bag, specifically see Fig. 3, quick-change system comprises the first power brick 10, second power brick 20 and switch unit, first power brick 10 and the second power brick 20 can independently as electrical source of power, and being configured on battery-driven car, the mouth of the first power brick 10 and the mouth of the second power brick 20 are connected in parallel.Switch unit is configured to: when the SOC of the first power brick 10 of current power supply is less than predetermined threshold, is switched to the second power brick 20 and powers.Predetermined threshold can carry out setting or setting according to avoiding power brick electricity to use up damage battery according to the minimum output electricity of power brick, generally, is set as between 5%-8% by predetermined threshold.
Battery-driven car configures two electrical source of power, and two electrical source of power are in parallel, when an electrical source of power (the first power brick is generally preferential electrical source of power) electricity is too low, be switched to another one electrical source of power (the second power brick is generally reserve power power supply) work, effectively can increase the continual mileage of battery-driven car like this.
Consider quick-replaceable and the charging of power brick, the first power brick 10 and the second power brick 20 all comprise multiple module 30 that can dismantle separately, and each module 30 can charge separately under family's power utilization environment.The structural representation of the first power brick 10 shown in Figure 6, because the second power brick is identical with module 30 structure of the inside of the first power brick, so and the not shown structure about the second power brick, but can be shown in Figure 6.
By n (n >=1 in first power brick 10 and the second power brick 20, and for integer) module 30 forms, module 30 is connected by quick connector with Battery case, facilitates module quick-replaceable, and the weight of each module 30 ensures that adult normally moves and changes.Each module 30 can charge separately at home, convenient and swift safety.
See Fig. 4, the outlet internal line of the first power brick 10 is provided with the first main positive relay 11 of main positive relay 11, first first diode 12 in parallel.See Fig. 5, the outlet internal line of the second power brick 20 is provided with the second main positive relay 21 of main positive relay 21, second second diode 22 in parallel.In normal driving process, general first power brick 10 that uses is powered, and when the first power brick 10 is powered, the first main positive relay 11 closes, and the second main positive relay 21 disconnects.
Switch unit in the present embodiment, for controlling the carrying out of battery-driven car, but needs the driving states considering battery-driven car equally.Therefore, be in the condition of motoring condition at battery-driven car under, switch unit is specifically configured to: the first main positive relay 11 is disconnected, and the first power brick 10 is by the first diode 12 supplying power for outside; Second main positive relay 21 is closed, and the second power brick 20 is by the second main positive relay 21 supplying power for outside; Be greater than the condition of the voltage of the first power brick 10 at the voltage of the second power brick 20 under, the first diode 12 of one-way conduction disconnects.
And be in the condition of dead ship condition at battery-driven car under, switch unit is specifically configured to: make the low-pressure system of the first power brick 10 enter park mode by gateway controller, in battery-driven car restart procedure, start the low-pressure system of the second power brick 20 and the low-pressure system of No starting first power brick 10, thus power by means of only the second power brick 20.
Run and switch: when the first power brick 10 need of work is switched to the second power brick 20, the the first main positive relay 11 first controlling the first power brick 10 disconnects, now by the first diode 12 conducting supplying power for outside, second main positive relay 21 of next step closed second power brick 20, now two power brick supplying power for outside simultaneously, but because the voltage of the second power brick 20 is higher than the first power brick 10, first diode 12 oppositely ends, cannot output voltage, also can not occur to produce electric potential difference between abrupt change of voltage and two power brick, and make the low-pressure system of the first power brick 10 enter park mode by gateway controller, complete switching smoothly.
Stop and switch: when the SOC of the first power brick 10 is too low, after parking, make the low-pressure system of the first power brick 10 enter park mode by gateway controller, only start the electric system of the second power brick 20 when restarting, complete switching.
N (n >=1, and be an integer) battery system collection plate LECU and battery system master control board BMU is comprised in each power brick.Wherein collection plate mainly gathers each monomer battery voltage and temperature; Main and the battery system peripheral cell communication of battery system master control board.
Battery system master control board by the relay conducting of signal control power brick inside or shutoff, monitoring simultaneously total just, total negative between voltage.Battery system master control board gathers the size of current that current sensor detects constantly, as one of Main Basis calculating SOC.Battery system master control board detects the turn-on and turn-off state of relay, as security monitoring condition.Battery system master control board exports control signal, controls the fan even load work in power brick.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present invention is illustrate and described herein detailed, but, without departing from the spirit and scope of the present invention, still can directly determine or derive other modification many or amendment of meeting the principle of the invention according to content disclosed by the invention.Therefore, scope of the present invention should be understood and regard as and cover all these other modification or amendments.
Claims (10)
1. a quick change method for battery of electric vehicle bag, is characterized in that, comprising:
On battery-driven car, configuration can independently as the first power brick and second power brick of electrical source of power;
The mouth of described first power brick and the mouth of described second power brick are connected in parallel;
When the SOC of the first power brick of current power supply is less than predetermined threshold, is switched to described second power brick and powers.
2. quick change method according to claim 1, is characterized in that,
Described first power brick and described second power brick all comprise multiple module that can dismantle separately, and each described module can charge separately under family's power utilization environment.
3. quick change method according to claim 1, is characterized in that,
The outlet internal line of described first power brick is provided with the first main positive relay, the described first main positive relay the first diode in parallel;
The outlet internal line of described second power brick is provided with the second main positive relay, the described second main positive relay the second diode in parallel;
When described first power brick is powered, the described first main positive relay closes, the described second main positive relay disconnects.
4. quick change method according to claim 3, is characterized in that, be in the condition of motoring condition at described battery-driven car under, described in be switched to the step that described second power brick carries out powering and comprise:
Described first main positive relay disconnects, and described first power brick is by described first diode supplying power for outside;
Described second main positive relay closes, described second power brick is by the described second main positive relay supplying power for outside; Be greater than the condition of the voltage of described first power brick at the voltage of described second power brick under, described first diode of one-way conduction disconnects.
5. quick change method according to claim 4, is characterized in that, after the step that described first diode of one-way conduction disconnects, also comprises: make the low-pressure system of described first power brick enter park mode by gateway controller.
6. quick change method according to claim 3, is characterized in that, be in the condition of dead ship condition at described battery-driven car under, described in be switched to the step that described second power brick carries out powering and comprise:
The low-pressure system of described first power brick is made to enter park mode by gateway controller, in described battery-driven car restart procedure, start the low-pressure system of described second power brick and the low-pressure system of the first power brick described in No starting, thus power by means of only described second power brick.
7. a quick-change system for battery of electric vehicle bag, is characterized in that, comprising:
Can, independently as the first power brick and second power brick of electrical source of power, be configured on battery-driven car, the mouth of described first power brick and the mouth of described second power brick be connected in parallel;
Switch unit, for: when the SOC of the first power brick of current power supply is less than predetermined threshold, is switched to described second power brick and powers.
8. quick-change system according to claim 7, is characterized in that,
Described first power brick and described second power brick all comprise multiple module that can dismantle separately, and each described module can charge separately under family's power utilization environment.
9. quick-change system according to claim 7, is characterized in that,
The outlet internal line of described first power brick is provided with the first main positive relay, the described first main positive relay the first diode in parallel;
The outlet internal line of described second power brick is provided with the second main positive relay, the described second main positive relay the second diode in parallel;
When described first power brick is powered, the described first main positive relay closes, the described second main positive relay disconnects.
10. quick-change system according to claim 9, is characterized in that,
Be in the condition of motoring condition at described battery-driven car under, described switch unit specifically for: described first main positive relay is disconnected, and described first power brick is by described first diode supplying power for outside; Make the described second main positive relay closes, described second power brick is by the described second main positive relay supplying power for outside; Be greater than the condition of the voltage of described first power brick at the voltage of described second power brick under, described first diode of one-way conduction disconnects;
Be in the condition of dead ship condition at described battery-driven car under, described switch unit specifically for: make the low-pressure system of described first power brick enter park mode by gateway controller, in described battery-driven car restart procedure, start the low-pressure system of described second power brick and the low-pressure system of the first power brick described in No starting, thus power by means of only described second power brick.
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| CN201611209199.4A CN106740206B (en) | 2015-02-09 | 2015-02-09 | Quick-changing method and system for battery pack of electric vehicle |
| CN201510067192.2A CN104709104B (en) | 2015-02-09 | 2015-02-09 | Method and system for rapidly switching battery packs of electric vehicle |
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| CN201510067192.2A CN104709104B (en) | 2015-02-09 | 2015-02-09 | Method and system for rapidly switching battery packs of electric vehicle |
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| CN107539159A (en) * | 2017-09-18 | 2018-01-05 | 江西爱驰亿维实业有限公司 | Double source battery bag, management method and system and electric automobile |
| CN109968961A (en) * | 2017-12-27 | 2019-07-05 | 奥动新能源汽车科技有限公司 | Electric car |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106740206B (en) | 2020-07-21 |
| CN106740206A (en) | 2017-05-31 |
| CN104709104B (en) | 2017-02-01 |
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