TWI827331B - Charging device - Google Patents

Abstract

A charging device is provided, including: a slow charging circuit; a fast charging circuit, including at least one power module; a socket module, electrically connected with the slow charging circuit; a charging gun, electrically connected with each power module; a first relay module, electrically connected between a power supply and the socket module; a second relay module, electrically connected between the power supply and the charging gun; a control unit, electrically connected with the first relay module, the second relay module and the power supply; wherein the control unit is switchable to open and close the first relay module or the second relay module, so that as to provide the socket module with slow charging and the charging gun with fast charging.

Description

charging device

The invention relates to a charging device.

Nowadays, various countries are actively promoting the electrification of vehicles, whether they are electric vehicles, electric motorcycles, or electric bicycles. Therefore, charging piles for charging electric vehicles have gradually begun to be widely developed and installed in various places.

There are charging piles on the market today that provide AC low-power slow charging, and charging piles that provide DC high-power fast charging, but these charging piles only provide charging with a charging gun. Some vehicles do not have charging holes corresponding to the charging guns on the vehicle body, and the batteries of electric bicycles can only be connected to mains power through plugs. Therefore, existing charging piles cannot meet the charging needs of these vehicles and batteries. As a result, these vehicles and batteries can only be charged at home. If you want to drive far away from home, it will be quite inconvenient when the battery is empty. Moreover, the configuration of separate charging piles for slow charging and fast charging will cause users to only charge at specific locations according to the charging speed they want to use, which is also quite inconvenient in charging.

Therefore, it is necessary to provide a novel and progressive charging device to solve the above problems.

The main purpose of the present invention is to provide a charging device that integrates the functions of fast charging and slow charging, and provides fast charging with a socket unit and a charging gun.

In order to achieve the above object, the present invention provides a charging device, including: a slow charging circuit, whose power supply is connected to a power supply; a fast charging circuit, whose power supply is connected to the power supply, and the fast charging circuit includes at least one A power module, each of which is electrically connected to the power supply and provides high-power power output; a socket unit, which is electrically connected to the slow charging circuit; a charging gun, which is electrically connected to each of the power modules; A first relay module electrically connected to the slow charge charging circuit and between the power supply and the socket unit; a second relay module electrically connected to the fast charger A charging circuit, and is electrically connected between the power supply and the charging gun; a control unit, which is electrically connected to the first relay module, the second relay module and the power supply; wherein, the control unit The unit can choose to turn on the first relay module to allow the socket unit to receive power from the power supply, or to turn off the first relay module to block the socket unit from receiving power from the power supply; wherein, the control unit can Choose to turn on the second relay module to allow the charging gun to receive power from the power supply, or to turn off the second relay module to block the charging gun from receiving power from the power supply.

10:Power supply

20: Slow charging circuit

30: Fast charging circuit

31:Power module

40:Socket unit

50:Charging gun

61:The first relay module

62: Second relay module

621: First relay unit

622: Second relay unit

70:Control unit

80a, 80b, 80c: Backflow prevention unit

90: Fuse unit

100:Coin module

101:Human-computer interface

102: Low pass filter

103:Start switch

104: Stop switch

105:Emergency switch

106:Standby light

107: Start light

108:Abnormal light

109: Cooling fan

110:Monitoring unit

L: Live line

N: Neutral line

G: Ground wire

Figure 1 is a circuit diagram of a charging device according to a preferred embodiment of the present invention.

The following examples are only used to illustrate possible implementations of the present invention, but they are not intended to limit the scope of protection of the present invention. The "one" or "at least one" before the nouns mentioned in the article do not limit the quantity. It can also be "plural" according to the requirements. This change in quantity is also the scope of the desired protection, which will be explained first.

Please refer to Figure 1, which shows a preferred embodiment of the present invention. The charging device of the present invention includes a slow charging circuit 20, a fast charging circuit 30, a socket unit 40, a charging gun 50, and a first relay. Electric module 61, a second relay module 62 and a control unit 70. In this embodiment, the charging device is a charging pile, and the charging pile is used to charge batteries of electric vehicles (electric motorcycles, electric bicycles, etc.) and electric vehicles.

The slow charging circuit 20 is electrically connected to a power supply 10; the fast charging circuit 30 is electrically connected to the power supply 10. The fast charging circuit 30 includes at least one power module 31, and each power module 31 is electrically connected. The power supply 10 is connected to provide high-power power output; the socket unit 40 is electrically connected to the slow charging circuit 20; the charging gun 50 is electrically connected to each of the power modules 31; the first relay module 61 is electrically connected is connected to the slow charging circuit 20 and is electrically connected between the power supply 10 and the socket unit 40; the second relay module 62 is electrically connected to the fast charging circuit 30 and is electrically connected to between the power supply 10 and the charging gun 50; the control unit 70 is electrically connected to the first relay module 61, the second relay module 62 and the power supply 10; wherein, the control unit 70 can select Turn on the first relay module 61 to allow the socket unit 40 to receive power from the power supply 10, or turn off the first relay module 61 to block the socket unit 40 from receiving power from the power supply 10; wherein, the The control unit 70 can choose to turn on the second relay module 62 to allow the charging gun 50 to receive power from the power supply 10 , or turn off the second relay module 62 to block the charging gun 50 from receiving power from the power supply 10 . Electricity. Thereby, the functions of fast charging and slow charging are integrated, and the socket unit 40 provides normal (slow) charging and the charging gun 50 provides fast charging. Specifically, by controlling the first relay module 61 and The second relay module 62 is turned on and off to select whether the socket unit 40 is used for charging or the charging gun 50 is used for charging. To further explain, fast charging and slow (normal) charging options, as well as different types of charging options (the charging gun 50 and the socket unit 40), can be provided.

Specifically, the socket unit 40 is a 100V to 240V socket, which can be electrically connected with a plug (such as a battery charger plug, but not limited to this) to provide battery charging; the voltage selection of the socket unit 40 can be Make your selection based on the mains voltage of each country.

The charging device includes the power supply 10. The power supply 10 is an AC power supply. The power supply 10 includes a live wire L, a neutral wire N and a ground wire G. The socket unit 40 is electrically connected to the live wire L and the ground wire. Neutral wire N, the charging gun 50 is electrically connected to the live wire L and the neutral wire N; with a simple circuit, it provides the choice of fast charging and slow (normal) charging. In this embodiment, the potential difference between the live wire L and the ground wire G is 220V.

The second relay module 62 is electrically connected between each of the power modules 31 and the charging gun 50 . Preferably, the second relay module 62 includes a first relay unit 621 and a second relay unit 622. The first relay unit 621, the second relay unit 622, and the at least one (each The) power module 31 and the charging gun 50 are connected in series with each other, and the control unit 70 is electrically connected to the first relay unit 621 and the second relay unit 622. To further explain, the first relay unit 621 is a positive relay, the second relay unit 622 is a negative relay, the positive relay is electrically connected to a positive pole of each power module 31, and the negative relay is electrically connected On one of the negative poles of each power module 31 . Thereby, the charging gun can be switched to start charging and turn off charging, and can also be switched when performing insulation detection of the fast charging circuit, and can prevent power backflow to protect the charging gun 50 .

The fast charging circuit 30 includes a plurality of power modules 31, and the plurality of power modules 31 are connected in parallel, so that the overall size of the plurality of power modules 31 is small and can provide a predetermined high-power power transmission. out. To further explain, the control unit 70 can control the plurality of power modules 31 to convert the alternating current provided by the power supply 10 into a predetermined high-power direct current (at least it can output a direct current greater than or equal to 20kW).

The charging device further includes at least one backflow prevention unit. In this embodiment, the charging device further includes a plurality of backflow prevention units 80a, 80b, 80c. The backflow prevention unit 80a is electrically connected to the fast charging circuit 30 and is electrically connected to the charging gun 50 and the second Between the relay modules 62 (the first relay unit 621), the backflow prevention unit 80b is electrically connected between the positive electrode of one of the power modules 31 and the first relay unit 621. The backflow prevention unit 80b The unit 80c is electrically connected between the positive electrode of the other power module 31 and the second relay unit 622 . In this embodiment, each of the backflow prevention units 80a, 80b, and 80c is a Zener diode, a rectifier diode or a Silicon Controlled Rectifier (SCR). This is used to prevent current from flowing out of each power module 31 and then flowing backward.

The charging device further includes at least one fuse unit 90. In this embodiment, the charging device includes a plurality of fuse units 90, one of which is electrically connected to the charging gun 50 and the second relay module 62. In between, the other fuse unit 90 is electrically connected between the power supply 10 and the socket unit 40; therefore, when the passing current is too large, the circuit can be disconnected to interrupt the current to protect the circuit.

The charging device further includes a coin module 100 , and the coin module 100 is electrically connected to the control unit 70 . Accordingly, when the coin module 100 receives cash payment (such as coins), the control unit 70 can calculate a charging time according to the total amount of cash received by the coin module 100 to turn on the third charging time. When the charging time of a relay module 61 or the second relay module 62 ends, the first relay module 61 or the second relay module 62 is turned off. In other embodiments, the charging device may also include a charging module. The charging module may be used for electronic payment, mobile payment, debit card, an application (APP) payment (installed in the electronic device), etc. For payment, the user needs to control the start and end of charging by themselves. In addition, the charging device further includes a settlement module, the settlement module counts a user A total payment amount is generated based on the electricity used during a period of time (month, quarter or year). Therefore, users can transfer or remit money to a special account based on the total payment amount, or pay in cash.

The charging device further includes a human-machine interface 101, which is electrically connected to the control unit 70. The human-machine interface 101 allows the user to operate and control the charging using the socket unit 40 or the charging gun 50.

The charging device further includes a low-pass filter 102. The low-pass filter 102 is electrically connected between the power supply 10 and the socket unit 40 and between the power supply 10 and the charging gun 50, so that the socket unit 40 and the charging gun 50 can be safely electrically connected to the power supply 10 .

The charging device further includes a start switch 103, a stop switch 104 and an emergency switch 105. The start switch 103, the stop switch 104 and the emergency switch 105 are electrically connected to the control unit 70 respectively. The start switch 103 can be controlled by the control unit 70 to start charging. The stop switch 104 can be controlled by the control unit 70 to turn off charging. The emergency switch 105 can stop or start charging in an emergency via the control unit 70 .

The charging device further includes a standby light 106, a start light 107 and an abnormality light 108. The standby light 106, the start light 107 and the abnormality light 108 are electrically connected to the control unit 70 respectively. In the standby state, the control unit 70 controls the standby light 106 to light up or generate other lighting states (blinking). In the starting charging state, the control unit 70 controls the starting light 107 to light up or generate other lighting states (flickering). In an abnormal state, the control unit 70 controls the abnormal light 108 to light up or generate other light-emitting states (flickering).

The charging device further includes a cooling fan 109 , and the cooling fan 109 is electrically connected to the control unit 70 . The control unit 70 can activate the cooling fan 109 to provide a cooling function.

The charging device further includes a monitoring unit 110, which is electrically connected to the control unit 70. The monitoring unit 110 monitors the charging status of the socket unit 40 and the charging gun 50 . The monitoring Unit 110 includes a positioning system, such as a Global Positioning System (GPS), that can locate the location of the charging device. In addition, the monitoring unit 110 is electrically connected to the coin-operated module 100. The monitoring unit 110 can obtain the current total charging amount according to the total amount of cash payment received by the coin-operated module 100, or can also obtain the current total charging amount based on the coin-operated module 100. Group 100 charging times to know the total number of charging times provided.

10:Power supply

20: Slow charging circuit

30: Fast charging circuit

31:Power module

40:Socket unit

50:Charging gun

61:The first relay module

62: Second relay module

621: First relay unit

622: Second relay unit

70:Control unit

80a, 80b, 80c: Backflow prevention unit

90: Fuse unit

100:Coin module

101:Human-computer interface

102: Low pass filter

103:Start switch

104: Stop switch

105:Emergency switch

106:Standby light

107: Start light

108:Abnormal light

109: Cooling fan

110:Monitoring unit

L: Live line

N: Neutral line

G: Ground wire

Claims (6)

A charging device, including: a slow charging circuit, power supply connected to a power supply; a fast charge charging circuit, power supply connected to the power supply, including at least one power module, each of the power module power supply connected to the power supply And provide high-power power output; a socket unit, electrically connected to the slow charging circuit; a charging gun, electrically connected to each power module; a first relay module, electrically connected to the slow charging circuit , and is electrically connected between the power supply and the socket unit; a second relay module is electrically connected to the fast charging circuit, and is electrically connected between the power supply and the charging gun; and A control unit electrically connected to the first relay module, the second relay module and the power supply; a human-machine interface electrically connected to the control unit; wherein, the control unit can be selectively turned on The first relay module enables the socket unit to receive power from the power supply, or turns off the first relay module to block the socket unit from receiving power from the power supply; wherein, the control unit can choose to turn on the third relay module. The two relay modules enable the charging gun to receive power from the power supply source, or turn off the second relay module to block the charging gun from receiving power from the power supply source; wherein, the charging device is a charging pile; where, The human-machine interface allows the user to operate and control the choice of charging with the socket unit or the charging gun; wherein the second relay module is electrically connected between each of the power modules and the charging gun; Wherein, the second relay module includes a first relay unit and a second relay unit, and the first relay unit, the second relay unit, the at least one power module and the charging gun are connected in series with each other. , the control unit is electrically connected to the first relay unit and the second relay unit; wherein, the charging device further includes a plurality of backflow prevention units, one of the backflow prevention units is electrically connected to the fast charging charging circuit and is electrically Connected between the charging gun and the first relay unit, a backflow prevention unit is electrically connected between one of the positive electrodes of the power module and the first relay unit, and a backflow prevention unit is electrically connected Connected between the positive pole of another power module and the second relay unit, each backflow prevention unit is used to prevent current from flowing out of each power module and then flowing back; wherein, the charging device also includes a low-pass filter The low-pass filter is electrically connected between the power supply and the socket unit and between the power supply and the charging gun. The charging device according to claim 1, wherein the fast charging circuit includes a plurality of power modules, and the plurality of power modules are connected in parallel with each other. The charging device as claimed in claim 1, wherein the socket unit is a 100V to 240V socket. The charging device of claim 1 further includes at least one fuse unit electrically connected between the charging gun and the second relay module. The charging device according to claim 1 further includes a coin module, and the coin module is electrically connected to the control unit. The charging device according to claim 1, wherein the fast charging circuit includes a plurality of power modules, and the plurality of power modules are connected in parallel; the socket unit is a 100V to 240V socket; the charging device further includes a plurality of fuse units , one of the fuse units is electrically connected between the charging gun and the second relay module, and the other fuse unit is electrically connected between the power supply and the socket unit. time; the charging device further includes a coin-operated module, the coin-operated module is electrically connected to the control unit; the charging device includes the power supply, the power supply is an AC power supply, the power supply includes a live wire, a medium A neutral wire and a ground wire, the socket unit is electrically connected to the live wire and the neutral wire, the charging gun is electrically connected to the live wire and the neutral wire; the charging device also includes a start switch, a stop switch and an emergency switch, the start switch, the stop switch and the emergency switch are electrically connected to the control unit respectively; the charging device also includes a standby light, a start light and an abnormal light, the standby light, the start light and the abnormal light are respectively The charging device further includes a cooling fan, which is electrically connected to the control unit. The charging device further includes a monitoring unit, which is electrically connected to the control unit.

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