Charging control device for direct current charging equipment

Abstract

The utility model discloses a charging control device for direct current charging equipment, which comprises at least one direct current module and a charging control box, and is characterized in that the direct current module is suitable for being connected with three-phase input; the charging control box is provided with a direct current input end and a direct current output end, the direct current input end is connected with a corresponding direct current module, the direct current output end is connected with a power supply access end of a corresponding charging gun, and the charging control box is further provided with a BMS communication connection end which is suitable for being in communication connection with the corresponding charging gun so as to perform signal interaction with a vehicle end BMS. The charging control box is further provided with a low-voltage auxiliary source output end which is connected with the corresponding charging gun to supply power to the vehicle end BMS, and a connection confirmation signal input end which is suitable for being connected with the corresponding charging gun to feed back a charging gun connection confirmation signal. And the charging control box is also provided with a direct current module communication control end connected with the corresponding direct current module. Various connecting ends are arranged in an integrated mode, installation is convenient, use is easy, the standardization degree is high, and universality is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a charging control device for direct current charging equipment belongs to charging technical field. BACKGROUND

[0002] At present, direct current charging equipment, namely charging pile, generally separates the secondary input protection, low-voltage auxiliary source, controller, direct current output and the like, for example, a kind of chopper charging pile is disclosed in Chinese patent with announcement number CN220700932U, which separates each device and arranges in the casing, this kind of separate layout is although regional division is explicit, but space utilization is low, due to the function coordination and information interaction between each region, leading to the complexity of cross-regional line is high. SUMMARY

[0003] The utility model solves the technical problem that the prior art is to overcome, provide a kind of charging control device for direct current charging equipment, it is integrated with various connection ends, easy to install, simple to use, high degree of standardization, strong versatility.

[0004] In order to solve the above technical problems, the technical scheme of the utility model is as follows: a kind of charging control device for direct current charging equipment, comprising:

[0005] At least a direct current module, the direct current module is suitable for connecting three-phase input;

[0006] Charging control box, the charging control box has direct current input end and direct current output end, the direct current input end is connected with corresponding direct current module, direct current output end is connected with the power access end of corresponding charging gun, the charging control box is further provided with BMS communication connection end suitable for being connected with corresponding charging gun to carry out signal interaction with vehicle end BMS, the charging control box is further provided with low-voltage auxiliary source output end being connected with corresponding charging gun to power supply vehicle end BMS, the charging control box is further provided with connection confirmation signal input end suitable for being connected with corresponding charging gun to feedback charging gun connection confirmation signal, the charging control box is further provided with direct current module communication control end being connected with corresponding direct current module.

[0007] Further, the charging control box includes direct current output relay, and the power access end is connected with the corresponding direct current output end through the direct current output relay.

[0008] Further, the charging control box is further provided with electronic lock control end being connected with corresponding charging gun to control the electronic lock of charging gun, and the charging control box is further provided with electronic lock switch state signal input end being connected with corresponding charging gun to feedback the electronic lock switch state of charging gun.

[0009] Further, an AC contactor is connected between the DC module and the three-phase input, and the charging control box further has a contactor on-off control end connected to a coil of the AC contactor to control attraction and disconnection of the AC contactor.

[0010] Further, the charging control box has a power supply input end connected to a C phase and an N phase of the three-phase input.

[0011] Further, the charging control box further comprises a fan for blowing cooling air to the charging control box, and the charging control box further has a fan control end adapted to a coil of the fan to control operation of the fan.

[0012] Further, the charging control box further has a temperature signal sampling input end connected to a corresponding charging gun to feed back a temperature signal of a positive and negative pole of the charging gun.

[0013] Further, the charging control box comprises a processor integrated with the DC output relay, and the BMS communication connection end, the connection confirmation signal input end and the DC module communication control end are arranged on the processor.

[0014] After the above technical scheme is adopted, the DC input end, the DC output end, the BMS communication connection end, the low-voltage auxiliary source output end, the connection confirmation signal input end and the DC module communication control end are integrated, and the electronic lock control end, the electronic lock switch state signal input end, the contactor on-off control end, the power supply input end, the fan control end and the temperature signal sampling input end can also be integrated, so that the charging control box is convenient to install, simple to use, high in standardization degree and strong in universality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure diagram of the charging control box of the utility model Figure 1 ;

[0016] Figure 2 is a structure diagram of the charging control box of the utility model Figure 2 ;

[0017] Figure 3 is an electrical connection diagram of the charging control device for the DC charging equipment of the utility model. DETAILED DESCRIPTION

[0018] In order to make the content of the utility model more easily understood clearly, the utility model is further described in detail below according to specific embodiments and in combination with the drawings.

[0019] As shown in Figures 1-3 , a charging control device for a DC charging equipment is suitable for a charging pile, comprising:

[0020] two DC modules, the DC module being adapted to connect a three-phase input;

[0021] The charging control box has a DC input end connected with the corresponding DC module, a DC output end connected with the power access end of the corresponding charging gun, a BMS communication connection end adapted to be connected with the corresponding charging gun for signal interaction with the vehicle end BMS, a low-voltage auxiliary source integrated in the charging control box, a low-voltage auxiliary source output end connected with the low-voltage auxiliary source and adapted to be connected with the corresponding charging gun for power supply to the vehicle end BMS, a connection confirmation signal input end adapted to be connected with the corresponding charging gun for feedback of the charging gun connection confirmation signal, and a DC module communication control end connected with the corresponding DC module.

[0022] Specifically, the charging control box includes a DC output relay, and the power access end is connected with the corresponding DC output end through the DC output relay.

[0023] Specifically, as shown in Figure 3 , the charging control box further has an electronic lock control end connected with the corresponding charging gun for controlling the electronic lock of the charging gun, and an electronic lock switch state signal input end connected with the corresponding charging gun for feedback of the electronic lock switch state of the charging gun.

[0024] Specifically, as shown in Figure 3 , the DC module is connected with the three-phase input through an AC contactor, and the charging control box further has a contactor on-off control end connected with the coil of the AC contactor for controlling the attraction and disconnection of the AC contactor.

[0025] Specifically, as shown in Figure 3 , the charging control box has a power supply input end connected with the C phase and the N phase of the three-phase input.

[0026] Specifically, as shown in Figure 3 , the charging control box further includes a fan for blowing cooling air to the charging control box, and the charging control box further has a fan control end adapted to be connected with the coil of the fan for controlling the operation of the fan.

[0027] Specifically, as shown in Figure 3 , the charging control box further has a temperature signal sampling input end connected with the corresponding charging gun for feedback of the positive and negative pole temperature signal of the charging gun.

[0028] Specifically, the charging control box includes a processor integrated with the DC output relay, the BMS communication connection end, the connection confirmation signal input end, the DC module communication control end, the electronic lock control end, the electronic lock switch state signal input end, the power supply input end, the fan control end, and the temperature signal sampling input end are all arranged on the processor. The processor can adopt an MCU processor.

[0029] Specifically, in the embodiment, as shown in the figure, Figure 3 the connection end 1DC+, 1DC-, 2DC+, 2DC- is a DC input end, AU1, AU2 is a DC module, the connection end L, N is a power supply input end, the connection end K5 is a fan control end, the connection end A1 is a contactor on-off control end, the connection end CAN3 is a DC module communication control end, the connection end 1A+, 1A-, 2A+, 2A- is a low-voltage auxiliary source output end, the connection end 1EL, 2EL is an electronic lock control end, the connection end 1RS, 2RS is an electronic lock switch state signal input end, the connection end 1PT, 2PT is a temperature signal sampling input end, the connection end 1CC1, 2CC1 is a connection confirmation signal input end, and the connection end 1S+ / S-, 2S+ / S- is a BMS communication connection end.

[0030] In the embodiment, the external connection of the charging control box can all adopt a wire harness group and a special connector plug-in, except that the DC+ and DC- for input and output adopt terminal connection.

[0031] The voltage and current acquisition circuit and the metering circuit are also integrated in the charging control box. The voltage and current acquisition circuit is connected with the connection line between the DC output relay and the DC output end, for acquiring the voltage and current of the corresponding DC output loop. The metering circuit is connected with the corresponding voltage and current acquisition circuit, for calculating the power information according to the acquired voltage and current. The voltage and current acquisition circuit and the metering circuit are both prior art, and the embodiment will not be described in detail.

[0032] When the charging gun XP is connected to the electric vehicle, the charging control box detects that the charging gun has been completely connected through CC1, the charging control box supplies power to the vehicle end BMS through A+, A-, and interacts with the vehicle end BMS through S+ / S- to obtain charging demand information. The charging control box controls the output of the DC module according to the demand information, and can measure the voltage, current and power of the corresponding DC output loop through the voltage and current acquisition circuit and the metering circuit, and can upload the metering information and order information to the operation platform. When a fault is detected, the charging control box will stop the DC module output, disconnect the DC output loop through the DC output relay, issue a fault alarm and upload the fault information.

[0033] The above-described specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the present application, and it should be understood that the above-described specific embodiments are merely specific embodiments of the present application and are not used to limit the present application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A charging control device for a DC charging equipment, characterized in that, Comprise: At least a direct current module, the direct current module is suitable for connecting three-phase input; The charging control box has a direct current input end and a direct current output end, the direct current input end is connected with the corresponding direct current module, the direct current output end is connected with the power access end of the corresponding charging gun, the charging control box also has BMS communication connection end suitable for being connected with the corresponding charging gun to interact with the signal of the vehicle end BMS, the charging control box also has low voltage auxiliary source output end connected with the corresponding charging gun to supply power to the vehicle end BMS, the charging control box also has connection confirmation signal input end suitable for being connected with the corresponding charging gun to feedback charging gun connection confirmation signal, the charging control box also has direct current module communication control end connected with the corresponding direct current module.

2. The charging control device for direct current charging equipment according to claim 1, wherein The charging control box comprises a direct current output relay, and the power access end is connected with the corresponding direct current output end through the direct current output relay.

3. The charging control device for direct current charging equipment according to claim 1, wherein The charging control box also has an electronic lock control end connected with the corresponding charging gun to control the electronic lock of the charging gun, and the charging control box also has an electronic lock switch state signal input end connected with the corresponding charging gun to feedback the electronic lock switch state of the charging gun.

4. The charging control device for direct current charging equipment according to claim 1, wherein An alternating current contactor is connected between the direct current module and the three-phase input, and the charging control box also has a contactor on-off control end connected with the coil of the alternating current contactor to control the attraction and disconnection of the alternating current contactor.

5. The charging control device for a direct current charging apparatus according to claim 1, characterized by The charging control box has a power supply input end connected with the C phase and the N phase of the three-phase input.

6. The charging control device for direct current charging equipment according to claim 1, wherein It also includes a fan for blowing cooling air to the charging control box, and the charging control box also has a fan control end suitable for connecting the coil of the fan to control the operation of the fan.

7. The charging control device for direct current charging equipment according to claim 1, wherein The charging control box also has a temperature signal sampling input end connected with the corresponding charging gun to feedback the positive and negative pole temperature signal of the charging gun.

8. The charging control device for a direct current charging apparatus according to claim 2, characterized by The charging control box comprises a processor integrated with the direct current output relay, and the BMS communication connection end, the connection confirmation signal input end and the direct current module communication control end are arranged on the processor.

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