Charging and discharging control device, apparatus, and system

Abstract

The application discloses a kind of charging and discharging control device, equipment and system, including power management module, central processing module, power supply information acquisition module and charging and discharging control module integrated on substrate;Substrate is equipped with power supply bus;The input end of power management module is used to connect direct-current power supply, and the output of power management module is connected with power supply bus;Power supply information acquisition module is used to acquire input power supply information and output power supply information of power management module;Charging and discharging control module is used to connect charging and discharging gun;Central processing module is used to control power management module and charging and discharging control module work according to input power supply information and output power supply information.This technical scheme integrates power management module and charging and discharging control module on the same substrate, and is uniformly controlled by the same central processing module, reduces the repeated design and manufacture of hardware circuit, and reduces hardware cost.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, and in particular to a charging and discharging control device, equipment and system. Background Technology

[0002] In the field of new energy, inverters and AC charging stations are two important pieces of equipment. Inverters are mainly used to convert direct current (DC) to alternating current (AC) for use by AC loads; while AC charging stations are used to charge electric vehicles and other devices.

[0003] Traditionally, inverters and AC charging stations are independent systems, each with its own hardware circuitry and software control system, connected by power cables. However, in home charging and discharging control systems, this separate design increases the overall cost of the equipment. Furthermore, the need for data exchange and communication between the independent inverter and AC charging station increases system complexity and potential points of failure, reducing the reliability and stability of the home charging and discharging control system. Summary of the Invention

[0004] This invention provides a charge / discharge control device, equipment, and system to solve the problems of high cost and poor reliability of existing charge / discharge control systems.

[0005] A charging and discharging control device includes a base plate, a power management module, a central processing module, a power supply information acquisition module, and a charging and discharging control module;

[0006] The power management module, the central processing module, the power supply information acquisition module, and the charge / discharge control module are integrated on the substrate;

[0007] The substrate is provided with a power supply bus;

[0008] The input terminal of the power management module is used to connect to a DC power supply, and the output terminal of the power management module is connected to the power supply bus.

[0009] The power supply information acquisition module is connected to the power management module and the central processing module, and is used to acquire the input power supply information and output power supply information of the power management module.

[0010] The charging and discharging control module is connected to the power supply bus and is used to connect the charging and discharging gun;

[0011] The central processing module is connected to the control terminal of the power management module, the power supply information acquisition module, and the charge / discharge control module, and is used to control the operation of the power management module and the charge / discharge control module according to the input power supply information and the output power supply information.

[0012] Furthermore, the power management module includes a DC / AC inverter module and a first switching module;

[0013] The input terminal of the DC / AC inverter module is used to connect to the DC power supply, the output terminal of the DC / AC inverter module is connected to the first terminal of the first switch module, the second terminal of the first switch module is connected to the power supply bus, and the control terminal of the first switch module is connected to the central processing module.

[0014] Furthermore, the first switching module includes a solid-state relay.

[0015] Furthermore, the charging and discharging control device also includes a temperature acquisition module; the temperature acquisition module is connected to the central processing module and is used to acquire the first temperature information of the power management module, the second temperature information of the power supply bus, and the third temperature information of the charging and discharging control module;

[0016] The central processing module is used to control the power management module and the charge / discharge control module to work based on the first temperature information, the second temperature information, the third temperature information, the input power supply information, and the output power supply information.

[0017] Furthermore, the charge / discharge control module includes a first isolating switch and a control guidance circuit;

[0018] The first end of the first disconnecting switch is connected to the power supply bus, and the second end of the first disconnecting switch is used to connect to the charging and discharging gun;

[0019] The control terminal of the control and guidance circuit is connected to the central processing module, and the output terminal of the control and guidance circuit is used to connect to the charging and discharging gun.

[0020] Furthermore, the number of the charge / discharge control modules includes at least two; one end of each charge / discharge control module is connected to the power supply bus, and the other end is used to connect to a charge / discharge gun.

[0021] Furthermore, at least two of the charge / discharge control modules are plugged into the substrate.

[0022] Furthermore, the charge / discharge control device also includes a second isolation switch disposed on the substrate;

[0023] The first end of the second disconnecting switch is connected to the power supply bus, and the second end of the second disconnecting switch is used to connect to the electrical load; the control end of the second disconnecting switch is connected to the central processing module.

[0024] A charging and discharging control device includes a housing and the aforementioned charging and discharging control device;

[0025] The housing is provided with a first connecting end, a second connecting end and a third connecting end;

[0026] The first connection terminal is connected to the input terminal of the power management module and is used to connect to the DC power supply;

[0027] The second connection terminal is connected to the charge / discharge control module and is used to connect the charge / discharge gun;

[0028] The third connection terminal is connected to the power supply bus and is used to connect the electrical load.

[0029] A charging and discharging control system includes a DC power supply, an electrical load, a charging and discharging gun, and the aforementioned charging and discharging control equipment.

[0030] The DC power supply is connected to the first connection terminal;

[0031] The charging / discharging gun is connected to the second connecting end for connecting to the vehicle;

[0032] The electrical load is connected to the third connection terminal.

[0033] This invention provides a charging and discharging control device, equipment, and system. The charging and discharging control device includes a substrate, a power management module, a central processing module, a power supply information acquisition module, and a charging and discharging control module. The power management module, central processing module, power supply information acquisition module, and charging and discharging control module are integrated on the substrate. A power supply bus is provided on the substrate. The input terminal of the power management module is connected to a DC power supply, and the output terminal of the power management module is connected to the power supply bus. The power supply information acquisition module is connected to the power management module and the central processing module, and is used to acquire the input and output power supply information of the power management module. The charging and discharging control module is connected to the power supply bus and is used to connect a charging and discharging gun. The central processing module is connected to the control terminal of the power management module, the power supply information acquisition module, and the charging and discharging control module, and is used to control the operation of the power management module and the charging and discharging control module according to the input and output power supply information. This integrates the power management module and the charging and discharging control module on the same substrate and allows for unified control through the same central processing module, reducing redundant design and manufacturing of hardware circuits and lowering hardware costs. Simultaneously, the integration of the software system reduces the workload and cost of software development. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a charge / discharge control device according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of a charging and discharging control system according to an embodiment of the present invention.

[0037] In the diagram: 1. Charge / discharge control equipment; 11. Charge / discharge control device; 111. Baseboard; 1111. Power supply bus; 112. Power management module; 1121. DC / AC inverter module; 1122. First switch module; 113. Central processing module; 114. Power supply information acquisition module; 115. Charge / discharge control module; 1151. First disconnecting switch; 1152. Control guide circuit; 116. Second disconnecting switch; 117. Communication control module; 12. Housing; 121. First connection terminal; 122. Second connection terminal; 123. Third connection terminal; 2. DC power supply; 3. Electrical load; 4. Charge / discharge gun; 5. Vehicle. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be understood that the invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout.

[0040] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this invention, the first element, component, area, layer, or portion discussed below may be referred to as the second element, component, area, layer, or portion.

[0041] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0042] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0043] To fully understand this invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by this invention. Preferred embodiments of the invention are described in detail below; however, in addition to these detailed descriptions, the invention may have other embodiments.

[0044] This embodiment provides a charging and discharging control system, including a DC power supply 2, an electrical load 3, a charging and discharging gun 4, and the aforementioned charging and discharging control device 1; the DC power supply 2 is connected to a first connection terminal 121; the charging and discharging gun 4 is connected to a second connection terminal 122 for connecting a vehicle 5; and the electrical load 3 is connected to a third connection terminal 123.

[0045] The DC power source 2 can be a photovoltaic system or other device that outputs DC power. The electrical load 3 can be, for example, a household load or other AC load. For example, a household load could be a refrigerator, an air conditioner, or a battery.

[0046] In this embodiment, the DC power supply 2, the charging / discharging gun 4, and the electrical load 3 are connected to the charging / discharging control device 1 through the first connection terminal 121, the second connection terminal 122, and the third connection terminal 123, respectively. In grid-connected mode, i.e., when the mains power grid is interrupted, the DC power supply 2 supplies power to the vehicle 5 and the electrical load 3. In off-grid mode, the vehicle 5 supplies power to the electrical load 3 in reverse, so that the vehicle 5 can act as an emergency power source to ensure continuous power supply.

[0047] This embodiment provides a charging and discharging control device 1, a housing 12, and the aforementioned charging and discharging control apparatus 11. The housing 12 is provided with a first connection terminal 121, a second connection terminal 122, and a third connection terminal 123. The first connection terminal 121 is connected to the input terminal of the power management module 112 for connecting to a DC power supply 2. The second connection terminal 122 is connected to the charging and discharging control module 115 for connecting to a charging and discharging gun 4. The third connection terminal 123 is connected to the power supply bus 1111 for connecting to an electrical load 3. Thus, the charging and discharging control between the DC power supply 2, the charging and discharging gun 4, and the electrical load 3 is realized through the charging and discharging control apparatus 11.

[0048] This embodiment provides a charging and discharging control device 11, including a substrate 111, a power management module 112, a central processing module 113, a power supply information acquisition module 114, and a charging and discharging control module 115. The power management module 112, central processing module 113, power supply information acquisition module 114, and charging and discharging control module 115 are integrated on the substrate 111. A power supply bus 1111 is provided on the substrate 111. The input terminal of the power management module 112 is used to connect to a DC power supply 2, and the output terminal of the power management module 112 is connected to the power supply bus 1111. The power information acquisition module 114 is connected to the power management module 112 and the central processing module 113, and is used to acquire the input power supply information and output power supply information of the power management module 112; the charge and discharge control module 115 is connected to the power supply bus 1111, and is used to connect the charge and discharge gun 4; the central processing module 113 is connected to the control terminal of the power management module 112, the power supply information acquisition module 114 and the charge and discharge control module 115, and is used to control the operation of the power management module 112 and the charge and discharge control module 115 according to the input power supply information and the output power supply information.

[0049] The substrate 111 is a copper-clad laminate. The power management module 112, the central processing module 113, the power supply information acquisition module 114, and the charge / discharge control module 115 are integrated on the substrate 111 to form a PCB board.

[0050] As an example, copper-clad circuitry can be designed on substrate 111 based on practical experience to form power supply bus 1111.

[0051] As an example, the input terminal of the power management module 112 is used to connect to the DC power supply 2, and the output terminal of the power management module 112 is connected to the power supply bus 1111 to invert the DC power output from the DC power supply 2 into AC power to supply power to the vehicle 5 and the electrical load 3.

[0052] As an example, the power supply information acquisition module 114 is connected to the power management module 112 and the central processing module 113, and is used to acquire the input power supply information and output power supply information of the power management module 112. Exemplarily, the input power supply information includes the DC voltage and DC current at the input terminal of the power management module 112. The output power supply information includes the AC voltage, AC current, and leakage current at the output terminal of the power management module 112.

[0053] As an example, the charge / discharge control module 115 is connected to the power supply bus 1111 and is used to connect the charge / discharge gun 4 to draw power from the power supply bus 1111 to charge the vehicle 5 through the charge / discharge gun 4, or to draw power from the vehicle 5 through the charge / discharge gun 4 to discharge power to the power supply bus 1111 to supply power to the electrical load 3 through the power supply bus 1111. In this example, the charge / discharge control module 115 is directly connected to the output terminal of the power management module 112 through the power supply bus 1111. The AC power output by the power management module 112 is directly input to the charge / discharge control module 115 through the power supply bus 1111, eliminating the rectification-re-inverter stage and reducing energy loss by 10%-12%.

[0054] As an example, the central processing module 113 is connected to the control terminal of the power management module 112, the power supply information acquisition module 114, and the charge / discharge control module 115. It controls the operation of the power management module 112 and the charge / discharge control module 115 based on the input and output power supply information. In this example, the central processing module 113 includes an MCU. The central processing module 113 controls the operation of the power management module 112 and the charge / discharge control module 115 based on the input and output power supply information to provide overcurrent, overvoltage, or leakage protection for the charge / discharge control device 11.

[0055] For example, the central processing module 113 analyzes the collected AC bus voltage data. If the voltage exceeds the preset normal operating voltage range of ±15 volts, the central processing module 113 controls the power management module 112 and the charge / discharge control module 115 to stop the power output and trigger an alarm to activate the abnormal power supply action.

[0056] For example, the central processing module 113 analyzes the collected AC bus current data. If the current exceeds the preset normal operating current range of ±10 amps, the central processing module 113 stops the output of any electrical load 3, reduces the charging power of the charging gun 4, or reminds the user to reduce the use of electrical load 3.

[0057] For example, the central processing module 113 analyzes the collected AC bus leakage current data. If the leakage current exceeds the preset normal operating range of ±10 amperes, the central processing module 113 controls the power management module 112 and the charge and discharge control module 115 to stop the power output.

[0058] Furthermore, the charging and discharging control device 11 also includes a communication control module 117 disposed on the substrate 111. The communication control module 117 is used for data communication with external devices to realize vehicle-pile-network-cloud linkage. For example, the communication control module 117 may be Ethernet, Bluetooth or Wi-Fi.

[0059] In this embodiment, the charge / discharge control device 11 includes a substrate 111, a power management module 112, a central processing module 113, a power supply information acquisition module 114, and a charge / discharge control module 115. The power management module 112, central processing module 113, power supply information acquisition module 114, and charge / discharge control module 115 are integrated on the substrate 111. A power supply bus 1111 is provided on the substrate 111. The input terminal of the power management module 112 is connected to the DC power supply 2, and the output terminal of the power management module 112 is connected to the power supply bus 1111. The power supply information acquisition module 114 is connected to the power management module 112 and the central processing module 113, and is used to collect power supply information. The power management module 112 receives input and output power supply information; the charging and discharging control module 115, connected to the power supply bus 1111, is used to connect the charging and discharging gun 4; the central processing module 113, connected to the control terminal of the power management module 112, the power supply information acquisition module 114, and the charging and discharging control module 115, is used to control the operation of the power management module 112 and the charging and discharging control module 115 according to the input and output power supply information, thereby integrating the power management module 112 and the charging and discharging control module 115 on the same substrate 111 and controlling them uniformly through the same central processing module 113, reducing the redundant design and manufacturing of hardware circuits and lowering hardware costs. Simultaneously, the integration of the software system reduces the workload and cost of software development.

[0060] Furthermore, compared to controlling the power management module 112 and the charge / discharge control module 115 separately through two independent control boards, this application reduces data interaction and communication links between the independent control boards, lowers system complexity and potential failure points, and improves system reliability and stability. The power management module 112, the power supply information acquisition module 114, and the charge / discharge control module 115 do not need to communicate with each other; instead, they are managed by the central processing module 113 through multitasking.

[0061] In one embodiment, the power management module 112 includes a DC / AC inverter module 1121 and a first switch module 1122; the input terminal of the DC / AC inverter module 1121 is used to connect to the DC power supply 2, the output terminal of the DC / AC inverter module 1121 is connected to the first terminal of the first switch module 1122, the second terminal of the first switch module 1122 is connected to the power supply bus 1111, and the control terminal of the first switch module 1122 is connected to the central processing module 113.

[0062] As an example, the DC / AC inverter module 1121 includes a DC / AC conversion circuit for converting direct current into alternating current. It should be noted that this DC / AC conversion circuit can be a DC-to-AC circuit known in the art, and is not limited thereto.

[0063] In this embodiment, the power supply bus 1111 can be controlled to output AC power by turning the first switch module 1122 on or off. For example, in grid-connected mode, or when the vehicle 5 is charging normally, the first switch module 1122 can be turned on to supply power to the vehicle 5 and the electrical load 3.

[0064] In one embodiment, the first switching module 1122 includes a solid-state relay. In this embodiment, the first switching module 1122 includes a solid-state relay, which is used to achieve physical isolation between the power management module 112 and the power supply bus 1111, while having a low switching time of <10ms.

[0065] In one embodiment, the charge / discharge control device 11 further includes a temperature acquisition module; the temperature acquisition module is connected to the central processing module 113 and is used to acquire first temperature information of the power management module 112, second temperature information of the power supply bus 1111, and third temperature information of the charge / discharge control module 115; the central processing module 113 is used to control the power management module 112 and the charge / discharge control module 115 to work based on the first temperature information, the second temperature information, the third temperature information, the input power supply information, and the output power supply information.

[0066] As an example, the temperature acquisition module includes a first temperature sensor, a second temperature sensor, and a third temperature sensor. The first temperature sensor is located in the power management module 112 and is used to acquire first temperature information of the power management module 112. The second temperature sensor is located in the power supply bus 1111 and is used to acquire second temperature information of the power supply bus 1111. The third temperature sensor is located in the charge / discharge control module 115 and is used to acquire third temperature information of the charge / discharge control module 115.

[0067] In this embodiment, when any of the following information is abnormal: the first temperature information, the second temperature information, the third temperature information, the input power supply information, and the output power supply information, the central processing module 113 controls the power management module 112 and the charge / discharge control module 115 to stop working in order to ensure safety.

[0068] In one embodiment, the charge / discharge control module 115 includes a first disconnect switch 1151 and a control guide circuit 1152; the first end of the first disconnect switch 1151 is connected to the power supply bus 1111, and the second end of the first disconnect switch 1151 is used to connect to the charge / discharge gun 4; the control end of the control guide circuit 1152 is connected to the central processing module 113, and the output end of the control guide circuit 1152 is used to connect to the charge / discharge gun 4.

[0069] For example, the control guidance circuit 1152 includes a CC / CP control guidance circuit 1152. The central processing module 113 controls the charging power of the vehicle 5 connected to the charging gun 4 via the control guidance circuit 1152.

[0070] In one embodiment, the number of charge / discharge control modules 115 includes at least two; one end of each charge / discharge control module 115 is connected to the power supply bus 1111, and the other end is used to connect to a charge / discharge gun 4.

[0071] In this embodiment, there may be multiple charging and discharging control modules 115, which are modularly integrated. The central processing module 113 distributes the output power of the power management module 112 to multiple vehicles 5 in real time for charging, and dynamically adjusts the charging power according to the preset priority of the vehicles 5.

[0072] In one embodiment, at least two charge / discharge control modules 115 are plugged into the substrate 111.

[0073] In this embodiment, at least two charge / discharge control modules 115 are plugged into the substrate 111, thereby facilitating modular management and fault detection and maintenance.

[0074] In one embodiment, the charge / discharge control device 11 further includes a second disconnect switch 116 disposed on the substrate 111; the first end of the second disconnect switch 116 is connected to the power supply bus 1111, and the second end of the second disconnect switch 116 is used to connect the electrical load 3; the control end of the second disconnect switch 116 is connected to the central processing module 113.

[0075] In this embodiment, the first end of the second disconnecting switch 116 is connected to the power supply bus 1111, and the second end of the second disconnecting switch 116 is used to connect the electrical load 3. The control end of the second disconnecting switch 116 is connected to the central processing module 113, thereby controlling the power consumption status of the electrical load 3 by controlling the opening or closing of the second disconnecting switch 116.

[0076] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A charging and discharging control device, characterized in that, It includes a baseboard, a power management module, a central processing module, a power supply information acquisition module, and a charge / discharge control module; The power management module, the central processing module, the power supply information acquisition module, and the charge / discharge control module are integrated on the substrate; The substrate is provided with a power supply bus; The input terminal of the power management module is used to connect to a DC power supply, and the output terminal of the power management module is connected to the power supply bus. The power supply information acquisition module is connected to the power management module and the central processing module, and is used to acquire the input power supply information and output power supply information of the power management module. The charging and discharging control module is connected to the power supply bus and is used to connect the charging and discharging gun; The central processing module is connected to the control terminal of the power management module, the power supply information acquisition module, and the charge / discharge control module, and is used to control the power management module and the charge / discharge control module to work according to the input power supply information and the output power supply information. The charge / discharge control module includes a first disconnect switch and a control guide circuit; The first end of the first disconnecting switch is connected to the power supply bus, and the second end of the first disconnecting switch is used to connect to the charging and discharging gun; The control terminal of the control guidance circuit is connected to the central processing module, and the output terminal of the control guidance circuit is used to connect to the charging and discharging gun. The number of the charge / discharge control modules includes at least two; at least two of the charge / discharge control modules are plugged into the substrate.

2. The charging and discharging control device according to claim 1, characterized in that, The power management module includes a DC / AC inverter module and a first switch module; The input terminal of the DC / AC inverter module is used to connect to the DC power supply, the output terminal of the DC / AC inverter module is connected to the first terminal of the first switch module, the second terminal of the first switch module is connected to the power supply bus, and the control terminal of the first switch module is connected to the central processing module.

3. The charging and discharging control device according to claim 2, characterized in that, The first switching module includes a solid-state relay.

4. The charging and discharging control device according to claim 1, characterized in that, The charging and discharging control device further includes a temperature acquisition module; the temperature acquisition module is connected to the central processing module and is used to acquire the first temperature information of the power management module, the second temperature information of the power supply bus, and the third temperature information of the charging and discharging control module. The central processing module is used to control the power management module and the charge / discharge control module to work based on the first temperature information, the second temperature information, the third temperature information, the input power supply information, and the output power supply information.

5. The charging and discharging control device according to claim 1, characterized in that, One end of each of the charging and discharging control modules is connected to the power supply bus, and the other end is used to connect to a charging and discharging gun.

6. The charge / discharge control device according to claim 5, characterized in that, The charge / discharge control device further includes a second isolation switch disposed on the substrate; The first end of the second disconnecting switch is connected to the power supply bus, and the second end of the second disconnecting switch is used to connect to the electrical load; the control end of the second disconnecting switch is connected to the central processing module.

7. A charging and discharging control device, characterized in that, Includes a housing and a charge / discharge control device as described in any one of claims 1 to 6; The housing is provided with a first connecting end, a second connecting end and a third connecting end; The first connection terminal is connected to the input terminal of the power management module and is used to connect to the DC power supply; The second connection terminal is connected to the charge / discharge control module and is used to connect the charge / discharge gun; The third connection terminal is connected to the power supply bus and is used to connect the electrical load.

8. A charging and discharging control system, characterized in that, Includes a DC power supply, an electrical load, a charging / discharging gun, and the charging / discharging control device as described in claim 7; The DC power supply is connected to the first connection terminal; The charging / discharging gun is connected to the second connecting end for connecting to the vehicle; The electrical load is connected to the third connection terminal.

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