Charging control system and battery swap cabinet

Abstract

The present application discloses a charging control system and a battery swap cabinet. The charging control system includes: a power supply terminal, a power module, a control module, a communication module, a metering and acquisition module, and a switch module. The communication module is electrically connected to the control module and the metering and acquisition module, and is used to transmit data signals output by the control module and the metering and acquisition module, respectively. The metering and acquisition module is electrically connected to the switch module, and is used to collect and store current and voltage data flowing through the switch module. The charging control system provided in the present application can obtain voltage, current, and power information in real time by providing the metering and acquisition module. The communication module can also achieve electrical isolation between the control module and the metering and acquisition module.

Description

Technical Field

[0001] The present application relates to the technical field of charging equipment, and specifically to a charging control system and a battery swap cabinet. Background Art

[0002] Currently, the number of compartments in an e-bike battery swap cabinet is configured based on customer needs, typically with 4, 8, or 12 compartments. Because the parameters of e-bike batteries used by customers vary significantly, the amount of power they can store also varies significantly. As charging service operators, they urgently need to know information such as the AC supply voltage, AC port output voltage, charging status, and charge level of each compartment. Furthermore, from a product design perspective, analog quantities such as AC voltage and AC current belong to high-voltage circuits, while control circuits belong to low-voltage circuits. For safety reasons, the two require electrical isolation.

[0003] Therefore, how to provide a charging control system and a battery swap cabinet to obtain voltage, current and power conditions in real time and achieve high and low voltage isolation is an urgent problem that needs to be solved. Summary of the Invention

[0004] The present application provides a charging control system and a battery swap cabinet. By setting up a metering and acquisition module, it is possible to obtain voltage, current and power information in real time; by setting up a communication module, it is possible to achieve electrical isolation between the control module and the metering and acquisition module.

[0005] On the one hand, an embodiment of the present application provides a charging control system, comprising: a power supply end, a power supply module, a control module, a communication module, a metering and acquisition module, and a switch module, wherein the power supply end is used to output a power supply voltage; the power supply module is electrically connected to the power supply end, the control module, the communication module, and the metering and acquisition module, and the power supply module is used to convert the voltage value of the power supply voltage and supply power to the control module, the communication module, and the metering and acquisition module; the communication module is electrically connected to the control module and the metering and acquisition module, and the communication module is used to transmit data signals output by the control module and the data signals output by the metering and acquisition module respectively; the metering and acquisition module is electrically connected to the switch module, and the metering and acquisition module is used to collect and store current and voltage data flowing through the switch module; the control module reads data information of the metering and acquisition module through the communication module and outputs a control signal based on the data information; the switch module is electrically connected to the control module and the metering and acquisition module, and the switch module is used to control the conduction and disconnection of an input interface and an output interface under the control of the control module.

[0006] 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 end, the communication module and the control module, the power chip is used to convert the voltage value of the power supply voltage and power the communication module and the control module; the DCDC converter is electrically connected to the power end, the communication module and the metering acquisition module, the DCDC converter is used to convert the voltage value of the power supply voltage and power the communication module and the metering acquisition module.

[0007] Optionally, in some embodiments of the present application, the communication module includes a digital signal isolation chip, and the first input terminal, the second input terminal, the first output terminal and the second output terminal of the digital signal isolation chip are electrically connected to the control module; the third input terminal, the fourth input terminal, the third output terminal and the fourth output terminal of the digital signal isolation chip are electrically connected to the metering acquisition module.

[0008] Optionally, in some embodiments of the present application, the switch module includes a live wire, a neutral wire, a double-pole double-throw relay, a fuse and a shunt, the first common contact of the double-pole double-throw relay is electrically connected to an end of the live wire close to the input interface, the second common contact of the double-pole double-throw relay is electrically connected to an end of the neutral wire close to the input interface, the first normally open contact of the double-pole double-throw relay is electrically connected to an end of the live wire close to the output interface, the second normally open contact of the double-pole double-throw relay is electrically connected to an end of the neutral 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.

[0009] Optionally, in some embodiments of the present application, the switching module further includes a transistor, a diode and a zero switch, the base of the transistor is electrically connected to the control module, the collector of the transistor is electrically connected to the anode of the diode and one end of the zero switch, the emitter of the transistor is electrically connected to the ground end, the power end is electrically connected to the 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 used to control the closing and opening of the double-pole double-throw relay.

[0010] Optionally, in some embodiments of the present application, the metering acquisition module includes a metering acquisition chip, the metering acquisition chip includes an AC current acquisition unit, an output voltage acquisition unit, and a power supply voltage acquisition unit, and the AC current acquisition unit, the output voltage acquisition unit, and the power supply voltage acquisition unit are electrically connected to the switch module respectively.

[0011] Optionally, in some embodiments of the present application, the AC current acquisition 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 the second end of the shunt; the output voltage acquisition unit includes a third pin and a fourth pin, the third pin is electrically connected to the first ground end, and the fourth pin is electrically connected to the first normally open contact of the double-pole double-throw relay; the power supply voltage acquisition unit includes a fifth pin and a sixth pin, the fifth pin is electrically connected to the second ground end, and the sixth pin is electrically connected to the first common contact of the double-pole double-throw relay.

[0012] Optionally, in some embodiments of the present application, the output voltage acquisition unit further includes: a capacitor, a first resistor, a second resistor and a third resistor, one end of the capacitor is electrically connected to the first normally open contact of the double-pole double-throw relay, the other end of the capacitor is electrically connected to the first end of the first resistor, the second end of the first resistor is electrically connected to the first end of the second resistor, the second end of the second resistor is electrically connected to the first end of the third resistor, and the second end of the third resistor is electrically connected to the fourth pin.

[0013] Optionally, in some embodiments of the present application, the control module includes a single chip microcomputer.

[0014] On the other hand, the present application provides a battery swap cabinet, including the charging control system as described above.

[0015] The present application provides a charging control system and a battery exchange cabinet, comprising: a power supply end, a power supply module, a control module, a communication module, a metering and acquisition module, and a switch module, wherein the power supply end is used to output a power supply voltage; the power supply module is electrically connected to the power supply end, the control module, the communication module, and the metering and acquisition module, and the power supply module is used to convert the voltage value of the power supply voltage and supply power to the control module, the communication module, and the metering and acquisition module; the communication module is electrically connected to the control module and the metering and acquisition module, and the communication module is used to transmit the data signal output by the control module and the data signal output by the metering and acquisition module respectively; the metering and acquisition module is electrically connected to the switch module, and the metering and acquisition module is used to collect and store the current and voltage data flowing through the switch module; the control module reads the data information of the metering and acquisition module through the communication module, and outputs a control signal according to the data information; the switch module is electrically connected to the control module and the metering and acquisition module, and the switch module is used to control the conduction and disconnection of the input interface and the output interface under the control of the control module. The charging control system provided in this application can obtain voltage, current and power information in real time by setting up a metering and acquisition module; and can achieve electrical isolation between the control module and the metering and acquisition module by setting up a communication module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is one of the structural diagrams of the charging control system provided in the embodiment of the present application;

[0018] Figure 2 This is the second structural diagram of the charging control system provided in the embodiment of the present application;

[0019] Figure 3 This is a circuit diagram of a charging control system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0021] The embodiments of the present application provide a charging control system and a battery exchange cabinet. By setting a metering and acquisition module and a communication module, it is possible to obtain voltage, current and electric energy conditions in real time and achieve high and low voltage isolation. The following are detailed descriptions respectively. It should be noted that the description order of the following embodiments does not serve as a limitation on the preferred order of the embodiments. In addition, in the description of this application, the term "including" means "including but not limited to". The terms "first", "second", "third", etc. are used only as labels to distinguish different objects, rather than to describe a specific order.

[0022] See also Figure 1 , Figure 1 This is one of the structural diagrams of the charging control system provided in the embodiment of the present application. Figure 1 As shown, the embodiment of the present application provides a charging control system, including: a power supply terminal 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 terminal VDD is used to output the power supply voltage; the power supply module 10 is electrically connected to the power supply terminal VDD, the control module 20, the communication module 30 and the metering acquisition module 40, the power supply module 10 is used to convert the voltage value of the power supply voltage and supply power to the control module 20, the communication module 30 and the metering acquisition module 40; the communication module 30 is electrically connected to the control module 20 and the metering acquisition module 40, The communication module 30 is used to transmit the data signal output by the control module 20 and the data signal output by the metering and acquisition module 40 respectively; the metering and acquisition module 40 is electrically connected to the switch module 50, and the metering and acquisition module 40 is used to collect and store the current and voltage data flowing through the switch module 50; the control module 20 reads the data information of the metering and acquisition module 40 through the communication module 30, and outputs a control signal based on the data information; the switch module 50 is electrically connected to the control module 20 and the metering and acquisition module 40, and is used to control the conduction and disconnection of the input interface and the output interface under the control of the control module 20.

[0023] The charging control system provided in the embodiment of the present application, by providing a metering and acquisition module 40, can obtain voltage, current and power information in real time, thereby improving the intelligence and applicability of the charging control system; and by providing a communication module 30, it can achieve electrical isolation between the metering and acquisition module 40 belonging to the high-voltage circuit and the control module 20 belonging to the low-voltage circuit, thereby improving the safety of the charging control system.

[0024] See also Figure 2 and Figure 3 , Figure 2 This is the second structural diagram of the charging control system provided in the embodiment of the present application; Figure 3 This is a circuit diagram of the charging control system provided by the embodiment of the present application. Figure 2and Figure 3 As shown, the control module 20 includes a single-chip microcomputer U1, which is an integrated circuit chip. Specifically, the single-chip microcomputer U1 can adopt the STM32 series single-chip microcomputer U1. The single-chip microcomputer U1 is the core of the entire charging control system and is responsible for the control and implementation of various functions of the charging control system. Furthermore, SPI (Serial Peripheral Interface, Chinese abbreviation serial peripheral interface) communication is a standard method of industrial communication, which is divided into master and slave devices. In the embodiment of the present application, 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 no device selection is required, so the chip select signal is not used. Specifically, the single-chip microcomputer U1 includes an SCK port, a MOSI port, a MISO port and an INT port, wherein the SCK port outputs a communication clock signal; MOSI is also used to output a control signal; the MISO port and the INT port are used to receive the digital signal output by the communication module 30.

[0025] In an embodiment of the present application, the power module 10 includes a power chip PW1 and a DCDC converter. The power chip PW1 is electrically connected to the power supply terminal VDD, the communication module 30, and the control module 20. The power chip PW1 is used to convert the voltage value of the power supply voltage and power the communication module 30 and the control module 20. The DCDC converter is electrically connected to the power supply terminal VDD, the communication module 30, and the metering and acquisition module 40. The DCDC converter is used to convert the voltage value of the power supply voltage and power the communication module 30 and the metering and acquisition module 40. Specifically, the voltage value provided by the power supply terminal VDD is 5V, and the power supply terminal VDD powers the power chip PW1 and the DCDC converter. By providing the power chip PW1 and the DCDC converter, modules with high voltage requirements and modules with low voltage requirements can be powered separately, that is, isolation of different voltage regions can be achieved.

[0026] In the embodiment of the present application, the communication module 30 includes a digital signal isolation chip U2. The first input terminal VIA, the second input terminal VIB, the first output terminal VOA, and the second output terminal VOB of the digital signal isolation chip U2 are electrically connected to the SCK port, MOSI port, MISO port, and INT port of the single-chip microcomputer U1, respectively; the third input terminal VIC, the fourth input terminal VID, the third output terminal VOC, and the fourth output terminal VOD of the digital signal isolation chip U2 are electrically connected to the metering acquisition module 40. Specifically, the digital signal isolation chip U2 refers to the chip manual. In the VIA signal: I represents input, A represents signal channel A; in VOA: O represents output, A represents signal channel A, and other signals are similar. The isolation requirements (safety requirements, including creepage distance, electrical clearance, power frequency withstand voltage, and insulation resistance) between the metering acquisition chip U3 and the single-chip microcomputer U1 are achieved through the digital signal isolation chip U2, achieving isolation of different voltage areas and completing the transmission of digital signals.

[0027] The working process of the charging control system includes: communicating and interacting with the upper-level control board through the single-chip microcomputer U1, analyzing and outputting the control signal according to the instruction requirements and transmitting it to the digital signal isolation chip U2, and then transmitting it to the metering acquisition module 40, reading the data information in the internal memory of the metering acquisition module 40, and transmitting the read data information to the single-chip microcomputer U1 through the digital signal isolation chip U2, and then transmitting it to the upper-level control board by the single-chip microcomputer U1.

[0028] In the embodiment of the present application, the model of the power chip PW1 includes SCJT1117B-3.3, and the power chip PW1 is used to provide a 3.3V voltage for the microcontroller U1 and the digital signal isolation chip U2.

[0029] In an embodiment of the present application, the switch module 50 includes a live wire L, a neutral wire N, a double-pole double-throw relay RL1, a fuse F1 and a shunt RS1. The first common contact of the double-pole double-throw relay RL1 is electrically connected to an end of the live wire L close to the input interface, the second common contact of the double-pole double-throw relay RL1 is electrically connected to an end of the neutral wire N close to the input interface, the first normally open contact of the double-pole double-throw relay RL1 is electrically connected to an end of the live wire L close to the output interface, the second normally open contact of the double-pole double-throw relay RL1 is electrically connected to an end of the neutral wire N close to the output interface, the fuse F1 is arranged between the input interface and the first common contact of the double-pole double-throw relay RL1, and the shunt RS1 is arranged between the input interface and the second common contact of the double-pole double-throw relay RL1.

[0030] In an embodiment of the present application, the switch module 50 further includes a transistor Q1, a diode D1, and a zero switch K1. The base of the transistor Q1 is electrically connected to the control module 20, the collector of the transistor Q1 is electrically connected to the anode of the diode D1 and one end of the zero switch K1, the emitter of the transistor Q1 is electrically connected to the ground terminal GND, the power supply terminal VDD is electrically connected to the 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 to control the closing and opening of the double-pole double-throw relay RL1. 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 emitter of the transistor Q1. The configuration of the zero switch K1 enables the zero switch K1 to control the closing or opening of the double-pole double-throw relay RL1 when the AC voltage passes through zero, thereby reducing the long-term inrush current between the contacts of the double-pole double-throw relay RL1, which helps to extend the service life of the device and reduce equipment maintenance costs.

[0031] In the embodiment of the present application, the metering and acquisition module 40 includes a metering and acquisition chip U3, which includes an AC current acquisition unit 41, an output voltage acquisition unit 42, and a supply voltage acquisition unit 43. The AC current acquisition unit 41, the output voltage acquisition unit 42, and the supply voltage acquisition unit 43 are each electrically connected to the switch module 50. By providing the metering and acquisition chip U3, the supply voltage, output voltage, output current, active energy, and voltage zero-crossing signals can be acquired, and the converted analog data and calculated data collected can be stored in its own memory.

[0032] In the embodiment of the present application, the AC current acquisition unit 41 includes a first pin V1N and a second pin V1P, wherein the first pin V1N is electrically connected to one end of the shunt RS1, and the second pin V1P is electrically connected to the second end of the shunt RS1. The output voltage acquisition unit 42 includes a third pin V2N and a fourth pin V2P, wherein the third pin V2N is electrically connected to the first ground terminal GND, and the fourth pin V2P is electrically connected to the first normally open contact of the double-pole double-throw relay RL1. The supply voltage acquisition unit 43 includes a fifth pin V3N and a sixth pin V3P, wherein the fifth pin V3N is electrically connected to the second ground terminal GND, and the sixth pin V3P is electrically connected to the first common contact of the double-pole double-throw relay RL1. Specifically, the third input terminal VIC, the fourth input terminal VID, the third output terminal VOC, and the fourth output terminal VOD of the digital signal isolation chip U2 are electrically connected to the pins SCLK, SDI, SDO, and IRQ-N of the metering acquisition module, respectively.

[0033] In an embodiment of the present application, the output voltage acquisition unit 42 also includes: a capacitor CY1, a first resistor R20, a second resistor R21 and a third resistor R22, one end of the capacitor CY1 is electrically connected to the first normally open contact of the double-pole double-throw relay RL1, the other end of the capacitor CY1 is electrically connected to the first end of the first resistor R20, the second end of the first resistor R20 is electrically connected to the first end of the second resistor R21, the second end of the second resistor R21 is electrically connected to the first end of the third resistor R22, and the second end of the third resistor R22 is electrically connected to the fourth pin V2P.

[0034] By providing a capacitor CY1, a first resistor R20, a second resistor R21, and a third resistor R22, the output voltage can be collected. Specifically, the output voltage of the output port is divided in series by the capacitor CY1, the first resistor R20, the second resistor R21, and the third resistor R22, and then enters the third pin V2N and the fourth pin V2P via a differential input. The metering and acquisition module 40 obtains the output voltage data information. Due to the presence of capacitor CY1, the voltage waveform entering the pin of the metering and acquisition chip U3 is phase shifted. Using this voltage to participate in the electric energy calculation will affect the calculation accuracy. It is preferred to use the output voltage obtained from the fifth pin V3N and the sixth pin V3P to calculate the power and electric energy parameters. It should be noted that the four components of capacitor CY1, the first resistor R20, the second resistor R21, and the third resistor R22 constitute a capacitor-resistor series resistor that meets the requirements for creepage distance and electrical clearance in electrical safety. Among them, capacitor CY1 adopts the Y1 type safety specified capacitor to meet the test input to output circuit insulation resistance and DC withstand voltage test index requirements.

[0035] In the embodiment of the present application, the AC current acquisition unit 41 also includes a resistor R11, a capacitor C1, a capacitor C2, and a resistor R12 electrically connected to each other; the output voltage acquisition unit 42 also includes a resistor R24 ​​and a capacitor C6 electrically connected to the third pin V2N, a capacitor C5 and a resistor R23 electrically connected to the fourth pin V2P; the supply voltage acquisition unit 43 also 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.

[0036] In this embodiment of the present application, when the charging control system is in the uncharged state, the microcontroller U1 outputs a low level, transistor Q1 is in the off state, and the double-pole double-throw relay RL1 is in the open state. At this point, the microcontroller U1 accesses the metering and acquisition chip U3 via the SPI bus through the digital signal isolation chip U2. The metering and acquisition chip U3 can obtain the AC current through the voltage drop across the first pin V1N and the second pin V1P. Since the voltage drop across the shunt RS1 is zero in the uncharged state, the AC current is zero. The output voltage is obtained through the voltage drop across the third pin V2N and the fourth pin V2P. Since the double-pole double-throw relay RL1 is in the open state, there is no AC voltage at the output port, meaning the AC output voltage is zero. The voltage drop across the fifth pin V3N and the sixth pin V3P is used to obtain the supply voltage and frequency of the input interface, thereby determining whether the AC power supply is normal. At this stage, the microcontroller U1 can monitor the communication status of the metering and acquisition module 40 in real time, including the AC current, AC voltage, and output voltage, and thus determine whether the charging control system is operating normally.

[0037] In the embodiment of the present application, when the charging control system is in the charging state, the single-chip microcomputer U1 outputs a high level to control the transistor Q1 to be turned on, the collector of the transistor Q1 is at a low level, the double-pole double-throw relay RL1 is closed, the input interface and the output interface are turned on, and the switch module 50 outputs an AC voltage to the charger to charge the battery. At this time, due to the AC current flowing through the shunt RS1, a voltage drop is generated. The metering and acquisition chip U3 collects the input voltage and input current information, and can obtain the AC voltage, AC current and their phase relationship, and calculate the real-time AC voltage value, AC current value, power value (including active, reactive and apparent power), power factor, frequency and active energy, reactive energy and other information. The single-chip microcomputer U1 accesses the metering and acquisition chip U3 through the SPI bus via the digital signal isolation chip U2 to obtain this data information.

[0038] In the embodiment of the present application, when the charging control system is in an idle state, a control signal for entering the charging state is sent to the single-chip microcomputer U1 by background communication or local communication. As mentioned above, the single-chip microcomputer U1 monitors the communication status and input power supply status (including AC voltage value and frequency value) of the metering acquisition chip U3 in real time, and reports abnormal situations to the background and the manager in real time; when the equipment is running and the input power supply is normal, the metering acquisition chip U3 outputs the AC zero-crossing signal in real time and sends it to the single-chip microcomputer U1 through the D signal channel of the digital signal isolation chip U2. The single-chip microcomputer U1 can calculate the period of the AC voltage zero-crossing by obtaining the frequency value. Taking the power grid frequency of my country as an example, the waveform period of the AC voltage is 1 / 50*1000=20ms, and there are two zero-crossing points in each period, that is, the period of the zero-crossing point is 10ms; after detecting the zero-crossing signal sent by the metering acquisition chip U3, after a delay time, a high level is sent to the transistor Q1 to control the double-pole double-throw relay RL1 to close. When the DPDT relay RL1's operating delay is less than or equal to 10ms, the delay is calculated by subtracting the DPDT relay's operating delay from the zero-crossing period. When the relay's operating delay is greater than 10ms, the delay is calculated by subtracting the DPDT relay's operating delay from the AC voltage waveform period. For example, if the DPDT relay RL1's operating delay is 6ms, then after receiving the zero-crossing signal, microcontroller U1 delays 4ms and issues a high-level signal to turn on transistor Q1, completing the closure of DPDT relay RL1 at the AC zero-crossing point and enabling charging. Furthermore, the same applies when the charging control system switches from a charging state to a non-charging state.

[0039] In this embodiment of the present application, the metering and acquisition chip U3 and the digital signal isolation chip U2 are monitored in real time by the single-chip microcomputer U1. Simultaneously, the single-chip microcomputer U1 also monitors the AC input voltage through the metering and acquisition chip U3 to complete a self-test. When the charging control system is in the uncharged state, if the single-chip microcomputer U1 detects the output voltage, it can be determined that the contact of the double-pole double-throw relay RL1 is stuck. At this time, the single-chip microcomputer U1 can report to the backend and disable the unit. This setting is conducive to improving operation and maintenance efficiency and enhancing the customer experience.

[0040] On the other hand, the present application provides a battery swap cabinet, including the above charging control system. It should be noted that the charging control system is also applicable to charging cabinets and rental power cabinets.

[0041] The present application provides a charging control system and a battery swap cabinet, which includes: a power supply terminal 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 terminal VDD is used to output the power supply voltage; the power supply module 10 is electrically connected to the power supply terminal VDD, the control module 20, the communication module 30 and the metering acquisition module 40, and the power supply module 10 is used to convert the voltage value of the power supply voltage and supply power to the control module 20, the communication module 30 and the metering acquisition module 40; the communication module 30 is electrically connected to the control module 20 and the metering acquisition module 40 The communication module 30 is used to transmit the data signals output by the control module 20 and the data signals output by the metering and acquisition module 40, respectively. The metering and acquisition module 40 is electrically connected to the switch module 50, which is used to collect and store current and voltage data flowing through the switch module 50. The control module 20 reads the data information from the metering and acquisition module 40 through the communication module 30 and outputs a control signal based on the data information. The switch module 50 is electrically connected to the control module 20 and the metering and acquisition module 40, and is used to control the conduction and disconnection of the input interface and the output interface under the control of the control module 20. The charging control system provided in this application, by providing the metering and acquisition module 40 and the communication module 30, can obtain voltage, current, and electric energy information in real time and achieve high and low voltage isolation.

[0042] The above is a detailed introduction to a charging control system and a battery exchange cabinet provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A charging control system, characterized in that: include: Power supply terminal, power supply module, control module, communication module, metering acquisition module and switch module, among which, The power supply terminal is used to output a power supply voltage; The power supply module is electrically connected to the power supply end, the control module, the communication module and the metering acquisition module, and the power supply module is used to convert the voltage value of the power supply voltage and supply power to the control module, the communication module and the metering acquisition module; The communication module is electrically connected to the control module and the metering acquisition module, and the communication module is used to transmit the data signal output by the control module and the data signal output by the metering acquisition module respectively; The control module reads the data information of the measurement acquisition module through the communication module and outputs a control signal according to the data information; The switch module includes a live wire, a neutral wire, a double-pole double-throw relay, a fuse and a shunt, wherein the first common contact of the double-pole double-throw relay is electrically connected to an end of the live wire close to the input interface, the second common contact of the double-pole double-throw relay is electrically connected to an end of the neutral wire close to the input interface, the first normally open contact of the double-pole double-throw relay is electrically connected to an end of the live wire close to the output interface, the second normally open contact of the double-pole double-throw relay is electrically connected to an end of the neutral 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; The metering acquisition module includes a metering acquisition chip, which includes an AC current acquisition unit, an output voltage acquisition unit, and a supply voltage acquisition unit. The AC current acquisition unit, the output voltage acquisition unit, and the supply voltage acquisition unit are electrically connected to the switch module respectively. The AC current acquisition 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 the second end of the shunt; the output voltage acquisition unit includes a third pin and a fourth pin, the third pin is electrically connected to the first ground terminal, and the fourth pin is electrically connected to the first normally open contact of the double-pole double-throw relay; the supply voltage acquisition unit includes a fifth pin and a sixth pin, the fifth pin is electrically connected to the second ground terminal, and the sixth pin is electrically connected to the first common contact of the double-pole double-throw relay; The output voltage acquisition unit also includes: a capacitor, a first resistor, a second resistor and a third resistor, one end of the capacitor is electrically connected to the first normally open contact of the double-pole double-throw relay, the other end of the capacitor is electrically connected to the first end of the first resistor, the second end of the first resistor is electrically connected to the first end of the second resistor, the second end of the second resistor is electrically connected to the first end of the third resistor, and the second end of the third resistor is electrically connected to the fourth pin.

2. The charging control system according to claim 1, characterized in that: The power module includes a power chip and a DCDC converter. The power chip is electrically connected to the power supply end, the communication module and the control module. The power chip is used to convert the voltage value of the power supply voltage and power the communication module and the control module; the DCDC converter is electrically connected to the power supply end, the communication module and the metering acquisition module. The DCDC converter is used to convert the voltage value of the power supply voltage and power the communication module and the metering acquisition module.

3. The charging control system according to claim 1 or 2, characterized in that: The communication module includes a digital signal isolation chip, and the first input end, the second input end, the first output end and the second output end of the digital signal isolation chip are electrically connected to the control module; 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 to the measurement acquisition module.

4. The charging control system according to claim 1, characterized in that: The switch module also includes a transistor, a diode and a zero switch. The base of the transistor is electrically connected to the control module, the collector of the transistor is electrically connected to the anode of the diode and one end of the zero switch, the emitter of the transistor is electrically connected to the ground end, the power end is electrically connected to the 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 used to control the closing and opening of the double-pole double-throw relay.

5. The charging control system according to claim 1, characterized in that: The control module includes a single chip microcomputer.

6. A battery exchange cabinet, characterized in that: The charging control system comprises the charging control system according to any one of claims 1 to 5.

Images