CN218839237U - Charging control system and battery replacing cabinet - Google Patents

Abstract

The application discloses charge control system and trade electric cabinet, this charge control system includes: the device comprises a power supply end, a power supply module, a control module, a communication module, a metering and collecting module and a switch module, wherein the power supply module is electrically connected with the power supply end, the control module, the communication module and the metering and collecting module; the communication module is electrically connected with the control module and the metering acquisition module; the metering and collecting module is electrically connected with the switch module; the switch module is electrically connected with the control module and the metering acquisition module. The charging control system provided by the application can acquire voltage, current and electric quantity information in real time by arranging the metering acquisition module; through setting up communication module, can realize electric isolation between control module and the measurement collection module.

Description

Charging control system and battery replacing cabinet

Technical Field

The application relates to the technical field of charging equipment, in particular to a charging control system and a battery changing cabinet.

Background

At present, the number of cabin bodies of an electric bicycle power change cabinet is configured according to customer requirements, and the general positions are 4 cabins, 8 cabins, 12 cabins and the like. Because the battery parameters of the electric bicycles used by customers are inconsistent, the electric quantity stored by the electric bicycles is greatly different, and an operator serving as a charging service needs to know information such as alternating current power supply voltage, alternating current port output voltage, charging state, charging electric quantity and the like of a single cabin body urgently. In addition, from the product design aspect, analog quantities such as alternating voltage, alternating current and the like belong to a high-voltage loop, a control circuit belongs to a low-voltage loop, and the high-voltage loop and the low-voltage loop are required to be electrically isolated from each other due to safety considerations.

Therefore, how to provide a charging control system and a power conversion cabinet to achieve real-time voltage, current and electric energy acquisition and achieve high-low voltage isolation is a problem that needs to be solved urgently.

Disclosure of Invention

The application provides a charging control system and a power exchange cabinet, and voltage, current and electric quantity information can be acquired in real time by arranging a metering acquisition module; through setting up communication module, can realize electric isolation between control module and the measurement collection module.

In one aspect, an embodiment of the present application provides a charging control system, including: the device comprises a power supply end, a power supply module, a control module, a communication module, a metering and collecting module and a switch module, wherein the power supply module is electrically connected with the power supply end, the control module, the communication module and the metering and collecting module; the communication module is electrically connected with the control module and the metering acquisition module; the metering acquisition module is electrically connected with the switch module; the switch module is electrically connected with the control module and the metering acquisition module.

Optionally, in some embodiments of the present application, the power module includes a power chip and a DCDC converter, the power chip is electrically connected to the power source terminal, the communication module and the control module; the DCDC converter is electrically connected with the power supply end, the communication module and the metering and collecting module.

Optionally, in some embodiments of the present application, the communication module includes a digital signal isolation chip, and a first input end, a second input end, a first output end, and a second output end of the digital signal isolation chip are electrically connected to the control module; and the third input end, the fourth input end, the third output end and the fourth output end of the digital signal isolation chip are electrically connected with the metering acquisition module.

Optionally, in some embodiments of the present application, the switch module includes live wire, zero line, double-pole double-throw relay, fuse and shunt, double-pole double-throw relay's first common contact with the live wire is close to the one end electricity of input interface and is connected, double-pole double-throw relay's second common contact with the zero line is close to the one end electricity of input interface and is connected, double-pole double-throw relay's first normally open contact with the live wire is close to the one end electricity of output interface and is connected, double-pole double-throw relay's second normally open contact with the zero line is close to the one end electricity of output interface and is connected, the fuse set up in input interface with between double-pole double-throw relay's the first common contact, the shunt set up in input interface with between double-pole double-throw relay's the second common contact.

Optionally, in some embodiments of the present application, the switch module further includes a transistor, a diode, and a zero switch, a base of the transistor is electrically connected to the control module, a collector of the transistor is electrically connected to an anode of the diode and one end of the zero switch, an emitter of the transistor is electrically connected to a ground terminal, a power terminal is electrically connected to a cathode of the diode and the other end of the zero switch, and the zero switch is electrically connected to the double-pole double-throw relay and is configured to control the double-pole double-throw relay to be turned on and off.

Optionally, in some embodiments of the present application, the metering and collecting module includes a metering and collecting chip, the metering and collecting chip includes an alternating current collecting unit, an output voltage collecting unit, and a supply voltage collecting unit, the alternating current collecting unit, the output voltage collecting unit, and the supply voltage collecting unit are respectively electrically connected to the switch module.

Optionally, in some embodiments of the present application, the alternating current collecting unit includes a first pin and a second pin, the first pin is electrically connected to one end of the shunt, and the second pin is electrically connected to a second end of the shunt; the output voltage acquisition unit comprises a third pin and a fourth pin, the third pin is electrically connected with a first grounding end, and the fourth pin is electrically connected with a first normally open contact of the double-pole double-throw relay; the power supply voltage acquisition unit comprises a fifth pin and a sixth pin, the fifth pin is electrically connected with the second grounding end, and the sixth pin is electrically connected with the first common contact of the double-pole double-throw relay.

Optionally, in some embodiments of the present application, the output voltage collecting unit further includes: the circuit comprises a capacitor, a first resistor, a second resistor and a third resistor, wherein one end of the capacitor is electrically connected with a first normally open contact of the double-pole double-throw relay, the other end of the capacitor is electrically connected with a first end of the first resistor, a second end of the first resistor is electrically connected with a first end of the second resistor, a second end of the second resistor is electrically connected with a first end of the third resistor, and a second end of the third resistor is electrically connected with a fourth pin.

Optionally, in some embodiments of the present application, the control module includes a single chip microcomputer.

In another aspect, the present application provides a battery replacement cabinet, including the charging control system as described above.

The application provides a charge control system and trade electric cabinet includes: the device comprises a power supply end, a power supply module, a control module, a communication module, a metering and collecting module and a switch module, wherein the power supply module is electrically connected with the power supply end, the control module, the communication module and the metering and collecting module; the communication module is electrically connected with the control module and the metering acquisition module; the metering acquisition module is electrically connected with the switch module; the switch module is electrically connected with the control module and the metering acquisition module. The charging control system provided by the application can acquire voltage, current and electric quantity information in real time by arranging the metering acquisition module; through setting up communication module, can realize electric isolation between control module and the measurement collection module.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a charging control system according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural diagram of a charging control system according to an embodiment of the present application;

fig. 3 is a schematic circuit diagram of a charge control system according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a charging control system and a power conversion cabinet, and by arranging a metering acquisition module and a communication module, the conditions of voltage, current and electric energy can be acquired in real time, and high-voltage and low-voltage isolation can be realized. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments. In addition, in the description of the present application, the term "including" means "including but not limited to". The terms "first," "second," "third," and the like are used merely as labels to distinguish between different objects and not to describe a particular order.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a charging control system according to an embodiment of the present disclosure. As shown in fig. 1, an embodiment of the present application provides a charging control system, including: the system comprises a power supply end VDD, a power supply module 10, a control module 20, a communication module 30, a metering acquisition module 40 and a switch module 50, wherein the power supply end VDD is used for outputting power supply voltage; the power module 10 is electrically connected with a power supply end VDD, the control module 20, the communication module 30 and the metering and collecting module 40, and the power module 10 is used for converting the voltage value of the power supply voltage and supplying power to the control module 20, the communication module 30 and the metering and collecting module 40; the communication module 30 is electrically connected with the control module 20 and the metering and collecting module 40, and the communication module 30 is used for respectively transmitting the data signals output by the control module 20 and the data signals output by the metering and collecting module 40; the metering and collecting module 40 is electrically connected with the switch module 50, and the metering and collecting module 40 is used for collecting and storing current and voltage data flowing through the switch module 50; the control module 20 reads the data information of the metering acquisition module 40 through the communication module 30 and outputs a control signal according to the data information; the switch module 50 is electrically connected to the control module 20 and the measurement and collection module 40, and the switch module 50 is configured to control the input interface and the output interface to be connected and disconnected under the control of the control module 20.

According to the charging control system provided by the embodiment of the application, the metering and collecting module 40 is arranged, so that the voltage, current and electric quantity information can be acquired in real time, and the intelligence and the applicability of the charging control system are improved; and by arranging the communication module 30, the metering acquisition module 40 belonging to the high-voltage loop and the control module 20 belonging to the low-voltage loop can be electrically isolated, and the safety of the charging control system is improved.

Referring to fig. 2 and fig. 3, fig. 2 is a second schematic structural diagram of a charging control system according to an embodiment of the present disclosure; fig. 3 is a schematic circuit diagram of a charge control system according to an embodiment of the present application. As shown in fig. 2 and 3, the control module 20 includes a single chip microcomputer U1, and the single chip microcomputer U1 is an integrated circuit chip. Specifically, the single chip microcomputer U1 can adopt an STM32 series single chip microcomputer U1, and the single chip microcomputer U1 is a core of the whole charging control system and is responsible for controlling and realizing each function of the charging control system. Further, SPI (Serial peripheral interface, chinese abbreviated as Serial peripheral interface) communication is a standard manner of industrial communication, and is divided into a master device and a slave device, in the embodiment of the present application, an SPI bus communication is adopted between the single chip microcomputer U1 (master device) and the metering acquisition module 40 (slave device), that is, one-to-one communication, and a device does not need to be selected, so a chip selection signal is not used. Specifically, the single chip microcomputer U1 comprises an SCK port, an MOSI port, a MISO port and an INT port, wherein the SCK port outputs a communication clock signal; MOSI is also used to output control signals; the MISO port and the INT port are used for receiving the digital signal output by the communication module 30.

In the embodiment of the application, the power module 10 includes a power chip PW1 and a DCDC converter, the power chip PW1 is electrically connected to the power terminal VDD, the communication module 30 and the control module 20, and the power chip PW1 is configured to convert a voltage value of a power voltage and supply power to the communication module 30 and the control module 20; the DCDC converter is electrically connected with the power supply terminal VDD, the communication module 30 and the metering and collecting module 40, and is used for converting the voltage value of the power supply voltage and supplying power to the communication module 30 and the metering and collecting module 40. Specifically, the voltage value provided by the power supply terminal VDD is 5V, and the power supply terminal VDD supplies power to the power chip PW1 and the DCDC converter. By arranging the power chip PW1 and the DCDC converter, power can be supplied to a module with a high voltage requirement and a module with a low voltage requirement respectively, namely, isolation of different voltage areas is realized.

In the embodiment of the present application, the communication module 30 includes a digital signal isolation chip U2, and a first input VIA, a second input VIB, a first output VOA, and a second output VOB of the digital signal isolation chip U2 are electrically connected to the SCK port, the MOSI port, the MISO port, and the INT port of the single chip U1, respectively; the third input end VIC, the fourth input end VID, the third output end VOC and the fourth output end VOD of the digital signal isolation chip U2 are electrically connected with the metering and collecting module 40. Specifically, the digital signal isolation chip U2 refers to the chip manual, and in the VIA signal: i represents an input, A represents a signal channel A; in the VOA: o represents the output, A represents signal path A, and the other signals are similar. The isolation requirements (safety requirements including creepage distance, electric clearance, power frequency withstand voltage and insulation resistance) between the metering acquisition chip U3 and the single chip microcomputer U1 are realized through the digital signal isolation chip U2, different voltage areas are isolated, and digital signal transmission is completed.

The work flow of the charging control system comprises the following steps: through singlechip U1 and the mutual information of last one-level control panel communication, after the analysis to require output control signal according to the instruction and transmit to digital signal isolation chip U2, and then transmit to measurement collection module 40, read the data information of measurement collection module 40 internal storage ware, the data information of reading transmits singlechip U1 through digital signal isolation chip U2, by singlechip U1 conveying last one-level control panel.

In the embodiment of the application, the model of the power supply chip PW1 includes SCJT1117B-3.3, and the power supply chip PW1 is configured to provide 3.3V for the single chip microcomputer U1 and the digital signal isolation chip U2.

In this embodiment of the application, the switch module 50 includes a live wire L, a zero line N, a double-pole double-throw relay RL1, a fuse F1 and a shunt RS1, a first common contact of the double-pole double-throw relay RL1 is electrically connected to one end of the live wire L close to the input interface, a second common contact of the double-pole double-throw relay RL1 is electrically connected to one end of the zero line N close to the input interface, a first normally open contact of the double-pole double-throw relay RL1 is electrically connected to one end of the live wire L close to the output interface, a second normally open contact of the double-pole double-throw relay RL1 is electrically connected to one end of the zero line N close to the output interface, the fuse F1 is disposed between the input interface and the first common contact of the double-pole double-throw relay RL1, and the shunt RS1 is disposed between the input interface and the second common contact of the double-pole double-throw relay RL 1.

In this embodiment, the switch module 50 further includes a transistor Q1, a diode D1 and a zero switch K1, a base of the transistor Q1 is electrically connected to the control module 20, a collector of the transistor Q1 is electrically connected to an anode of the diode D1 and one end of the zero switch K1, an emitter of the transistor Q1 is electrically connected to a ground terminal GND, a power terminal VDD is electrically connected to a cathode of the diode D1 and the other end of the zero switch K1, and the zero switch K1 is electrically connected to the double-pole double-throw relay RL1 and is used for controlling the closing and opening of the double-pole double-throw relay RL 1. Specifically, the switch module 50 further includes a resistor R1 electrically connected to the base of the transistor Q1, and a resistor R2 electrically connected to the base and the emitter of the transistor Q1. The zero switch K1 is arranged, so that the zero switch K1 can control the double-pole double-throw relay RL1 to be switched on or switched off when the alternating voltage passes through zero, and further, the long-time impact current between the contacts of the double-pole double-throw relay RL1 is reduced, the service life of a device is prolonged, and the equipment maintenance cost is reduced.

In the embodiment of the present application, the metering and collecting module 40 includes a metering and collecting chip U3, the metering and collecting chip U3 includes an alternating current collecting unit 41, an output voltage collecting unit 42, and a power supply voltage collecting unit 43, and the alternating current collecting unit 41, the output voltage collecting unit 42, and the power supply voltage collecting unit 43 are electrically connected to the switch module 50, respectively. By arranging the metering acquisition chip U3, the acquisition of power supply voltage, output current, active electric energy and voltage zero-crossing signals can be completed, and acquired analog quantity converted data and data obtained by calculation are stored in a memory of the device.

In the embodiment of the present application, the alternating current collecting unit 41 includes a first pin V1N and a second pin V1P, the first pin V1N is electrically connected to one end of the shunt RS1, and the second pin V1P is electrically connected to a second end of the shunt RS 1; the output voltage acquisition unit 42 comprises a third pin V2N and a fourth pin V2P, the third pin V2N is electrically connected with a first ground terminal GND, and the fourth pin V2P is electrically connected with a first normally open contact of the double-pole double-throw relay RL 1; the power supply voltage acquisition unit 43 includes a fifth pin V3N and a sixth pin V3P, the fifth pin V3N is electrically connected to the second ground GND, and the sixth pin V3P is electrically connected to the first common contact of the double-pole double-throw relay RL 1. Specifically, a third input terminal VIC, a fourth input terminal VID, a third output terminal VOC, and a fourth output terminal VOD of the digital signal isolation chip U2 are electrically connected to a pin SCLK, a pin SDI, a pin SDO, and a pin IRQ-N of the metering and collecting module, respectively.

In the embodiment of the present application, the output voltage collecting unit 42 further includes: the circuit comprises a capacitor CY1, a first resistor R20, a second resistor R21 and a third resistor R22, wherein one end of the capacitor CY1 is electrically connected with a first normally-open contact of the double-pole double-throw relay RL1, the other end of the capacitor CY1 is electrically connected with a first end of the first resistor R20, a second end of the first resistor R20 is electrically connected with a first end of the second resistor R21, a second end of the second resistor R21 is electrically connected with a first end of the third resistor R22, and a second end of the third resistor R22 is electrically connected with a fourth pin V2P.

Output voltage can be acquired by arranging the capacitor CY1, the first resistor R20, the second resistor R21 and the third resistor R22, specifically, after the output voltage of the output port is serially connected and divided by the capacitor CY1, the first resistor R20, the second resistor R21 and the third resistor R22, the output voltage enters the third pin V2N and the fourth pin V2P through differential input, and the metering acquisition module 40 acquires data information of the output voltage. Due to the existence of the capacitor CY1, the voltage waveform entering the chip pin of the metering acquisition chip U3 generates phase shift, the calculation precision is influenced by adopting the voltage to participate in electric energy calculation, and the power and electric energy parameters are preferably calculated by adopting the output voltage acquired by the fifth pin V3N and the sixth pin V3P. The capacitor CY1, the first resistor R20, the second resistor R21, and the third resistor R22 form a capacitor-resistor series resistor, which satisfies the requirements of creepage distance and electric clearance in electrical safety, wherein the capacitor CY1 adopts a Y1 type safety-specified capacitor, and satisfies the index requirements of the test input on the insulation resistance of the output circuit and the dc withstand voltage test.

In the embodiment of the present application, the alternating current collecting unit 41 further includes a resistor R11, a capacitor C1, a capacitor C2, and a resistor R12 electrically connected to each other; the output voltage collecting unit 42 further includes a resistor R24 and a capacitor C6 electrically connected to the third pin V2N, and a capacitor C5 and a resistor R23 electrically connected to the fourth pin V2P; the supply voltage collecting unit 43 further includes a resistor R18 and a capacitor C4 electrically connected to the fifth pin V3N, and a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17 and a capacitor C3 electrically connected to the sixth pin V3P.

In the embodiment of the application, when the charging control system is in an uncharged state, the single chip microcomputer U1 outputs a low level, the triode Q1 is in a cut-off state, and the double-pole double-throw relay RL1 is in a disconnected state. At this time, the single chip microcomputer U1 accesses the metering acquisition chip U3 through the SPI bus through the digital signal isolation chip U2. The metering and collecting chip U3 can obtain alternating current through voltage drop at two ends of the first pin V1N and the second pin V1P, and the voltage drop of the current divider RS1 is zero in a non-charging state, namely the alternating current is zero; the output voltage is obtained through voltage drops at two ends of the third pin V2N and the fourth pin V2P, and the double-pole double-throw relay RL1 is in a disconnected state, so that no alternating voltage exists at an output port, namely the alternating output voltage is zero; and obtaining the power supply voltage value and the frequency value of the input interface through the voltage drop at the two ends of the fifth pin V3N and the sixth pin V3P, so as to judge whether the alternating current power supply is normal. At this stage, the single chip microcomputer U1 can monitor communication conditions such as alternating current, alternating voltage, and output voltage of the metering and collecting module 40 in real time, and then can judge whether the charging control system works normally.

In this embodiment, when the charging control system is in a charging state, the single chip microcomputer U1 outputs a high level to control the conduction of the triode Q1, the collector of the triode Q1 is at a low level, the double-pole double-throw relay RL1 is closed, the input interface is conducted with the output interface, and the switch module 50 outputs an ac voltage to the charger to charge the battery. At this time, because the alternating current flows through the shunt RS1 to generate a voltage drop, the metering and collecting chip U3 collects information of the input voltage and the input current, so that the alternating voltage, the alternating current and the phase relationship between the alternating voltage and the alternating current can be obtained, and information such as a real-time alternating voltage value, a real-time alternating current value, a real-time power value (including active power, reactive power and apparent power), a real-time power factor, a real-time frequency, real-time active power and reactive power can be obtained through calculation. The single chip microcomputer U1 accesses the metering acquisition chip U3 through the SPI bus through the digital signal isolation chip U2 to acquire the data information.

In the embodiment of the application, when the charging control system is in the idle state, the background communication or the local communication sends out a control signal for entering the charging state to the single chip microcomputer U1. As above, the single chip U1 monitors the communication state and the input power supply condition (including the ac voltage value and the frequency value) of the metering acquisition chip U3 in real time, and reports the abnormal condition to the background in real time and reports to the administrator; when the equipment is in operation and the input power supply is normal, the metering acquisition chip U3 outputs an alternating current zero crossing point signal in real time and sends the alternating current zero crossing point signal to the singlechip U1 through a D signal channel of the digital signal isolation chip U2. The single chip microcomputer U1 can calculate the period of the zero crossing point of the alternating voltage through the obtained frequency value, according to the power grid frequency 50HZ in China as an example, the waveform period of the alternating voltage is 1/50 × 1000=20ms, and the zero crossing point is obtained twice in each period, namely the period of the zero crossing point is 10ms; after a zero crossing point signal sent by the metering acquisition chip U3 is detected and delay time is passed, a high level is sent to the triode Q1 to control the closing of the double-pole double-throw relay RL 1. When the action delay time of the double-pole double-throw relay RL1 is less than or equal to 10ms, the delay time is obtained by subtracting the action delay time of the double-pole double-throw relay RL1 from the zero-crossing period; when the action delay time of the relay is greater than 10ms, the delay time is obtained by subtracting the action delay time of the double-pole double-throw relay RL1 from the waveform period of the alternating voltage, for example, the action delay time of the double-pole double-throw relay RL1 is 6ms, namely after the singlechip U1 receives a zero crossing point signal, the action delay time is delayed by 4ms, a high level control triode Q1 is sent out to be conducted, the closing of the double-pole double-throw relay RL1 at the alternating current zero crossing point is completed, and the charging function is realized. Further, the same is true when the charge control system is switched from the charged state to the non-charged state.

In this application embodiment, measurement acquisition chip U3, digital signal keep apart chip U2 by singlechip U1 real-time supervision, simultaneously, singlechip U1 also through measurement acquisition chip U3 monitoring alternating current input voltage's the condition, and then accomplish the self-checking. When the charging control system is in a non-charging state, if the single chip microcomputer U1 monitors the output voltage, the contact adhesion fault of the double-pole double-throw relay RL1 can be judged, at the moment, the single chip microcomputer U1 can report a background and forbid the cabin body, and the arrangement is favorable for improving the operation and maintenance efficiency and improving the customer experience.

On the other hand, the application provides a trade electric cabinet, includes the control system that charges as above. It should be noted that the charging control system is also applicable to a charging cabinet and a rental-charging cabinet.

The application provides a charge control system and trade electric cabinet, this charge control system includes: the system comprises a power supply end VDD, a power supply module 10, a control module 20, a communication module 30, a metering acquisition module 40 and a switch module 50, wherein the power supply end VDD is used for outputting power supply voltage; the power module 10 is electrically connected with a power supply end VDD, the control module 20, the communication module 30 and the metering and collecting module 40, and the power module 10 is used for converting the voltage value of the power voltage and supplying power to the control module 20, the communication module 30 and the metering and collecting module 40; the communication module 30 is electrically connected with the control module 20 and the metering and collecting module 40, and the communication module 30 is used for respectively transmitting the data signals output by the control module 20 and the data signals output by the metering and collecting module 40; the metering and collecting module 40 is electrically connected with the switch module 50, and the metering and collecting module 40 is used for collecting and storing current and voltage data flowing through the switch module 50; the control module 20 reads the data information of the metering acquisition module 40 through the communication module 30 and outputs a control signal according to the data information; the switch module 50 is electrically connected to the control module 20 and the measurement and collection module 40, and the switch module 50 is configured to control the input interface and the output interface to be connected and disconnected under the control of the control module 20. The charging control system provided by the application can realize real-time acquisition of voltage, current and electric energy conditions and high-low voltage isolation by arranging the metering acquisition module 40 and the communication module 30.

The charging control system and the battery replacement cabinet provided in the embodiment of the present application are described in detail above, and specific examples are applied in the present application to explain the principle and the embodiment of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A charge control system, comprising: a power supply end, a power supply module, a control module, a communication module, a metering and collecting module and a switch module, wherein,

the power supply module is electrically connected with the power supply end, the control module, the communication module and the metering and collecting module;

the communication module is electrically connected with the control module and the metering acquisition module;

the metering acquisition module is electrically connected with the switch module;

the switch module is electrically connected with the control module and the metering and collecting module.

2. The charge control system according to claim 1, wherein the power supply module includes a power supply chip and a DCDC converter, the power supply chip being electrically connected with the power source terminal, the communication module, and the control module; the DCDC converter is electrically connected with the power supply end, the communication module and the metering and collecting module.

3. The charging control system according to claim 1 or 2, wherein the communication module comprises a digital signal isolation chip, and a first input end, a second input end, a first output end and a second output end of the digital signal isolation chip are electrically connected with the control module; and the third input end, the fourth input end, the third output end and the fourth output end of the digital signal isolation chip are electrically connected with the metering acquisition module.

4. The charging control system according to claim 3, wherein the switch module comprises a live wire, a zero wire, a double-pole double-throw relay, a fuse and a shunt, a first common contact of the double-pole double-throw relay is electrically connected with one end of the live wire close to the input interface, a second common contact of the double-pole double-throw relay is electrically connected with one end of the zero wire close to the input interface, a first normally open contact of the double-pole double-throw relay is electrically connected with one end of the live wire close to the output interface, a second normally open contact of the double-pole double-throw relay is electrically connected with one end of the zero wire close to the output interface, the fuse is arranged between the input interface and the first common contact of the double-pole double-throw relay, and the shunt is arranged between the input interface and the second common contact of the double-pole double-throw relay.

5. The charging control system according to claim 4, wherein the switch module further comprises a transistor, a diode, and a zero switch, wherein a base of the transistor is electrically connected to the control module, a collector of the transistor is electrically connected to an anode of the diode and one end of the zero switch, an emitter of the transistor is electrically connected to a ground terminal, a power terminal is electrically connected to a cathode of the diode and the other end of the zero switch, and the zero switch is electrically connected to the double-pole double-throw relay and is configured to control the double-pole double-throw relay to be turned on and off.

6. The charging control system according to claim 4 or 5, wherein the metering and collecting module comprises a metering and collecting chip, the metering and collecting chip comprises an alternating current collecting unit, an output voltage collecting unit and a supply voltage collecting unit, and the alternating current collecting unit, the output voltage collecting unit and the supply voltage collecting unit are respectively electrically connected with the switch module.

7. The charging control system according to claim 6, wherein the alternating current collection unit includes a first pin and a second pin, the first pin is electrically connected to one end of the shunt, and the second pin is electrically connected to a second end of the shunt; the output voltage acquisition unit comprises a third pin and a fourth pin, the third pin is electrically connected with a first grounding end, and the fourth pin is electrically connected with a first normally open contact of the double-pole double-throw relay; the power supply voltage acquisition unit comprises a fifth pin and a sixth pin, the fifth pin is electrically connected with a second grounding end, and the sixth pin is electrically connected with a first common contact of the double-pole double-throw relay.

8. The charging control system according to claim 7, wherein the output voltage acquisition unit further includes: the circuit comprises a capacitor, a first resistor, a second resistor and a third resistor, wherein one end of the capacitor is electrically connected with a first normally open contact of the double-pole double-throw relay, the other end of the capacitor is electrically connected with a first end of the first resistor, a second end of the first resistor is electrically connected with a first end of the second resistor, a second end of the second resistor is electrically connected with a first end of the third resistor, and a second end of the third resistor is electrically connected with a fourth pin.

9. The charging control system of claim 1, wherein the control module comprises a single-chip microcomputer.

10. A battery changing cabinet comprising a charge control system as claimed in any one of claims 1 to 9.

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