Charging and discharging control device, equipment and system

Abstract

The invention discloses a charge and discharge control device, equipment and system. The charge and discharge control device comprises a power management module, a central processing module, a power supply information acquisition module and a charge and discharge control module which are integrated on a substrate, a power supply bus is arranged on the substrate; the input end of the power management module is used for connecting a direct-current power supply; the output end of the power management module is connected with a power supply bus; the power supply information acquisition module is used for acquiring input power supply information and output power supply information of the power management module; the charging and discharging control module is used for connecting a charging and discharging gun; and the central processing module is used for controlling the power management module and the charging and discharging control module to work according to the input power supply information and the output power supply information. According to the technical scheme, the power management module and the charging and discharging control module are integrated on the same substrate, unified control is carried out through the same central processing module, repeated design and manufacturing of a hardware circuit are reduced, and the hardware cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of new energy technologies, and particularly to a charge and discharge control device, equipment and system. Background Art

[0002] In the field of new energy, inverters and AC charging piles are two important pieces of equipment. An inverter is mainly used to convert direct current into alternating current for use by AC loads; while an AC charging pile is used to charge equipment such as electric vehicles.

[0003] Traditionally, inverters and AC charging piles are independent of each other, each having an independent hardware circuit and software control system, and are connected through a power supply cable. However, in a home charge and discharge control system, this separate design will, on the one hand, increase the overall cost of the equipment; on the other hand, since data interaction and communication are required between the independent inverter and AC charging pile, it increases the complexity and failure points of the system, reducing the reliability and stability of the home charge and discharge control system. Summary of the Invention

[0004] Embodiments of the present invention provide a charge and discharge control device, equipment and system to solve the problems of high cost and poor reliability of the existing charge and discharge control system.

[0005] A charge and discharge control device includes a substrate, a power management module, a central processing module, a power supply information acquisition module and a charge and discharge control module; The power management module, the central processing module, the power supply information acquisition module and the charge and discharge control module are integrated on the substrate; A power supply bus is provided on the substrate; The input end of the power management module is used to connect to a DC power supply, and the output end of the power management module is connected to the power supply bus; The power supply information acquisition module, connected to the power management module and the central processing module, is used to acquire the input power supply information and output power supply information of the power management module; The charge and discharge control module, connected to the power supply bus, is used to connect to a charge and discharge gun; The central processing module, connected to the control end of the power management module, the power supply information acquisition module and the charge and discharge control module, is used to control the operation of the power management module and the charge and discharge control module according to the input power supply information and the output power supply information.

[0006] Further, the power management module includes a DC / AC inversion module and a first switch module; The input end of the DC / AC inverter module is used to connect to the DC power supply. The output end of the DC / AC inverter module is connected to the first end of the first switch module. The second end of the first switch module is connected to the power supply bus. The control end of the first switch module is connected to the central processing module.

[0007] Further, the first switch module includes a solid-state relay.

[0008] Further, the charge and discharge 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 charge and discharge control module; The central processing module is used to control the operation of the power management module and the charge and discharge control module according to the first temperature information, the second temperature information, the third temperature information, the input power supply information, and the output power supply information.

[0009] Further, the charge and discharge control module includes a first disconnect switch and a control and guidance circuit; The first end of the disconnect switch is connected to the power supply bus, and the second end of the disconnect switch is used to connect to the charge and discharge gun; The control end of the control and guidance circuit is connected to the central processing module, and the output end of the control and guidance circuit is used to connect to the charge and discharge gun.

[0010] Further, the number of the charge and discharge control modules is at least two; one end of each charge and discharge control module is connected to the power supply bus, and the other end is used to connect to one charge and discharge gun.

[0011] Further, at least two of the charge and discharge control modules are plugged on the substrate.

[0012] Further, the charge and discharge control device further includes a second disconnect switch arranged on the substrate; The first end of the second disconnect switch is connected to the power supply bus, and the second end of the second disconnect switch is used to connect to an electrical load; the control end of the second disconnect switch is connected to the central processing module.

[0013] A charge and discharge control device includes a housing and the above-mentioned charge and discharge control device; The housing is provided with a first connection end, a second connection end, and a third connection end; The first connection end is connected to the input end of the power management module and is used to connect to the DC power supply; The second connection end is connected to the charge and discharge control module and is used to connect to the charge and discharge gun; The third connection terminal is connected to the power supply bus and is used to connect an electrical load.

[0014] A charge and discharge control system includes a DC power supply, an electrical load, a charge and discharge gun, and the above-mentioned charge and discharge control device; The DC power supply is connected to the first connection terminal; The charge and discharge gun is connected to the second connection terminal and is used to connect a vehicle; The electrical load is connected to the third connection terminal.

[0015] An embodiment of the present invention provides a charge and discharge control device, equipment, and system. The charge and discharge control device includes a substrate, a power management module, a central processing module, a power supply information acquisition module, and a charge and discharge control module; the power management module, the central processing module, the power supply information acquisition module, and the charge and discharge control module are integrated on the substrate; a power supply bus is provided on the substrate; the input end of the power management module is used to connect a DC power supply, and the output end of the power management module is connected to the power supply bus; the power supply information acquisition module, connected to the power management module and the central processing module, is used to acquire the input power supply information and output power supply information of the power management module; the charge and discharge control module, connected to the power supply bus, is used to connect a charge and discharge gun; the central processing module, connected to the control end of the power management module, the power supply information acquisition module, and the charge and discharge control module, is used to control the operation of the power management module and the charge and discharge control module according to the input power supply information and output power supply information, so as to integrate the power management module and the charge and discharge control module on the same substrate and perform unified control through the same central processing module, reducing the repeated design and manufacturing of hardware circuits and lowering the hardware cost. At the same time, due to the integration of the software system, the workload and cost of software development are reduced. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings without creative efforts based on these drawings.

[0017] Figure 1 is a schematic diagram of a charge and discharge control device in an embodiment of the present invention; Figure 2 is a schematic diagram of a charge and discharge control system in an embodiment of the present invention.

[0018] In the figure: 1. Charge and discharge control device; 11. Charge and discharge control device; 111. Substrate; 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 and discharge control module; 1151. First disconnector; 1152. Control and guidance circuit; 116. Second disconnector; 117. Communication control module; 12. Housing; 121. First connection end; 122. Second connection end; 123. Third connection end; 2. DC power supply; 3. Electrical load; 4. Charge and discharge gun; 5. Vehicle. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] It should be understood that the present invention can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the present 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 the drawings.

[0021] It should be understood that when an element or layer is referred to as "on", "adjacent to", "connected to" or "coupled to" another element or layer, it can be directly on, adjacent to, connected or coupled to the other element or layer, or there may be intervening elements or layers. In contrast, when an element is referred to as "directly on", "directly adjacent to", "directly connected to" or "directly coupled to" another element or layer, 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, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be denoted as the second element, component, region, layer or part.

[0022] Spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature shown in the figures with other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relationship terms are also intended to include different orientations of the device in use and operation. For example, if the device in the figures is flipped, then an element or feature described as "under other elements" or "beneath them" or "under it" will be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "beneath" can include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are to be interpreted accordingly.

[0023] The purpose of the terms used herein is only to describe specific embodiments and not to limit the present invention. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0024] To fully understand the present invention, detailed structures and steps will be presented in the following description to explain the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may have other embodiments.

[0025] This embodiment provides a charge and discharge control system, including a DC power supply 2, an electrical load 3, a charge and discharge gun 4, and the above-mentioned charge and discharge control device 1; the DC power supply 2 is connected to the first connection end 121; the charge and discharge gun 4 is connected to the second connection end 122 for connecting to a vehicle 5; the electrical load 3 is connected to the third connection end 123.

[0026] Wherein, the DC power supply 2 may be a photovoltaic system or other devices that output direct current. The electrical load 3 may be, for example, a household load or other AC loads. Exemplarily, household loads are, for example, refrigerators, air conditioners, and batteries, etc.

[0027] In this embodiment, a DC power supply 2, a charging and discharging gun 4, and an electrical load 3 are respectively connected to a charging and discharging control device 1 through a first connection end 121, a second connection end 122, and a third connection end 123. In the grid-connected mode, that is, when the mains power grid is powered off, the DC power supply 2 supplies power to the vehicle 5 and the electrical load 3. When in the off-grid mode, the vehicle 5 supplies power to the electrical load 3 in reverse, so that the vehicle 5 serves as an emergency power supply to ensure power supply continuity.

[0028] This embodiment provides a charging and discharging control device 1, including a housing 12 and the above-mentioned charging and discharging control device 11; a first connection end 121, a second connection end 122, and a third connection end 123 are provided on the housing 12; the first connection end 121 is connected to the input end of the power management module 112 for connecting to the DC power supply 2; the second connection end 122 is connected to the charging and discharging control module 115 for connecting to the charging and discharging gun 4; the third connection end 123 is connected to the power supply bus 1111 for connecting to the 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 device 11.

[0029] 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, the central processing module 113, the power supply information acquisition module 114, and the 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 end of the power management module 112 is used to connect to the DC power supply 2, and the output end of the power management module 112 is connected to the power supply bus 1111; the power supply information acquisition module 114, connected to the power management module 112 and the central processing module 113, is used to acquire the input power supply information and output power supply information of the power management module 112; the charging and discharging control module 115, connected to the power supply bus 1111, is used to connect to the charging and discharging gun 4; the central processing module 113, connected to the control end 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 power supply information and output power supply information.

[0030] Among them, 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 charging and discharging control module 115 are integrated on the substrate 111 to form a PCB board.

[0031] As an example, copper-clad lines can be designed on the substrate 111 according to actual experience to form the power supply bus 1111.

[0032] As an example, the input end of the power management module 112 is used to connect to the DC power supply 2, and the output end of the power management module 112 is connected to the power supply bus 1111, which is used to invert the direct current output by the DC power supply 2 into alternating current to supply power to the vehicle 5 and the electrical load 3.

[0033] 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 end of the power management module 112. The output power supply information includes the AC voltage, AC current, and leakage current at the output end of the power management module 112.

[0034] As an example, the charge and discharge control module 115 is connected to the power supply bus 1111, and is used to connect to the charge and discharge gun 4 to draw power from the power supply bus 1111, charge the vehicle 5 through the charge and discharge gun 4, or draw power from the vehicle 5 through the charge and discharge gun 4 and discharge it 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 and discharge control module 115 is directly connected to the output end of the power management module 112 through the power supply bus 1111, and the alternating current output by the power management module 112 is directly input to the charge and discharge control module 115 through the power supply bus 1111, eliminating the rectification - re - inversion link, and reducing the energy loss by 10% - 12%.

[0035] As an example, the central processing module 113 is connected to the control end 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 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 and discharge control module 115 according to the input power supply information and output power supply information to perform over - current, over - voltage, or leakage protection on the charge and discharge control device 11.

[0036] Exemplarily, the central processing module 113 analyzes the collected AC bus voltage data. If it exceeds the preset normal operating voltage range of ±15 volts, the central processing module 113 controls the power management module 112 and the charge and discharge control module 115 to stop the power output and trigger an alarm for abnormal power operation.

[0037] Exemplarily, the central processing module 113 analyzes the collected AC bus current data. If it exceeds the preset normal operating current range of ±10 amperes, the central processing module 113 stops the output of any one electrical load 3 or reduces the charging power of the charge and discharge gun 4 or reminds the user to reduce the use of the electrical load 3.

[0038] Exemplarily, the central processing module 113 analyzes the collected leakage data of the AC bus. If it exceeds the preset normal operating leakage 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.

[0039] Furthermore, the charge and discharge control device 11 further 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 achieve vehicle, pile, network, and cloud linkage. Exemplarily, the communication control module 117 can be, for example, Ethernet, Bluetooth, or wifi.

[0040] In this embodiment, the charge and 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 and discharge control module 115; the power management module 112, the central processing module 113, the power supply information acquisition module 114, and the charge and discharge control module 115 are integrated on the substrate 111; a power supply bus 1111 is provided on the substrate 111; the input end of the power management module 112 is used to connect to the DC power supply 2, and the output end 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 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 to the charge and discharge gun 4; the central processing module 113 is connected to the control end 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 output power supply information. Thus, the power management module 112 and the charge and discharge control module 115 are integrated on the same substrate 111 and are uniformly controlled by the same central processing module 113, reducing the repeated design and manufacturing of the hardware circuit and lowering the hardware cost. At the same time, due to the integration of the software system, the workload and cost of software development are reduced.

[0041] Moreover, compared with controlling the power management module 112 and the charge and discharge control module 115 through two independent control boards respectively, the present application can reduce the data interaction and communication links between the independent control boards, lower the complexity and fault points of the system, and improve the reliability and stability of the system. There is no need for the power management module 112, the power supply information acquisition module 114, and the charge and discharge control module 115 to communicate with each other, and they are managed by the central processing module 113 for multitasking.

[0042] In one embodiment, the power management module 112 includes a DC / AC inverter module 1121 and a first switch module 1122; the input end of the DC / AC inverter module 1121 is used to connect to the DC power supply 2, the output end of the DC / AC inverter module 1121 is connected to the first end of the first switch module 1122, the second end of the first switch module 1122 is connected to the power supply bus 1111, and the control end of the first switch module 1122 is connected to the central processing module 113.

[0043] 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 adopt a well-known DC-to-AC circuit in the art and is not limited herein.

[0044] In this embodiment, the output of alternating current on the power supply bus 1111 can be controlled by turning on or off the first switch module 1122. For example, in the grid-connected mode or when the vehicle 5 is charging normally, the first switch module 1122 is controlled to turn on to supply power to the vehicle 5 and the electrical load 3.

[0045] In one embodiment, the first switch module 1122 includes a solid-state relay. In this embodiment, the first switch module 1122 includes a solid-state relay, which realizes physical isolation between the power management module 112 and the power supply bus 1111, and at the same time has a relatively low switching time, with the switching time < 10 ms.

[0046] In one embodiment, the charge and 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 the first temperature information of the power management module 112, the second temperature information of the power supply bus 1111, and the third temperature information of the charge and discharge control module 115; the central processing module 113 is used to control the operation of the power management module 112 and the charge and discharge control module 115 according to the first temperature information, the second temperature information, the third temperature information, the input power supply information, and the output power supply information.

[0047] 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 arranged in the power management module 112 and is used to acquire the first temperature information of the power management module 112. The second temperature sensor is arranged on the power supply bus 1111 and is used to acquire the second temperature information of the power supply bus 1111. The third temperature sensor is arranged in the charge and discharge control module 115 and is used to acquire the third temperature information of the charge and discharge control module 115.

[0048] In this embodiment, when any of the first temperature information, the second temperature information, the third temperature information, the input power supply information, and the output power supply information is abnormal, the central processing module 113 controls the power management module 112 and the charge and discharge control module 115 to stop working to ensure safety.

[0049] In one embodiment, the charge and discharge control module 115 includes a first disconnector 1151 and a control pilot circuit 1152; the first end of the disconnector is connected to the power supply bus 1111, and the second end of the disconnector is used to connect to the charge and discharge gun 4; the control end of the control pilot circuit 1152 is connected to the central processing module 113, and the output end of the control pilot circuit 1152 is used to connect to the charge and discharge gun 4.

[0050] Exemplarily, the control pilot circuit 1152 includes a CC / CP control pilot circuit 1152. The central processing module 113 controls the charging power of the vehicle 5 connected to the charge and discharge gun 4 through the control pilot circuit 1152.

[0051] In one embodiment, the number of the charge and discharge control modules 115 includes at least two; one end of each charge and discharge control module 115 is connected to the power supply bus 1111, and the other end is used to connect to a charge and discharge gun 4.

[0052] In this embodiment, there can be multiple charge and discharge control modules 115, which are integrated modularly. The central processing module 113 distributes the output power of the power management module 112 to charge multiple vehicles 5 in real time, and dynamically adjusts the charging power according to the preset priorities of the vehicles 5.

[0053] In one embodiment, at least two charge and discharge control modules 115 are plugged into the substrate 111.

[0054] In this embodiment, at least two charge and discharge control modules 115 are plugged into the substrate 111, which is convenient for modular management and fault detection and repair.

[0055] In one embodiment, the charge and discharge control device 11 further includes a second disconnector 116 disposed on the substrate 111; the first end of the second disconnector 116 is connected to the power supply bus 1111, the second end of the second disconnector 116 is used to connect to the electrical load 3; the control end of the second disconnector 116 is connected to the central processing module 113.

[0056] In this embodiment, the first end of the second disconnector 116 is connected to the power supply bus 1111, the second end of the second disconnector 116 is used to connect to the electrical load 3; the control end of the second disconnector 116 is connected to the central processing module 113, so as to control the power consumption state of the electrical load 3 by controlling the conduction or cut-off of the second disconnector 116.

[0057] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A charge and discharge 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 and discharge control module; The power management module, the central processing module, the power supply information acquisition module and the charge and discharge control module are integrated on the substrate; A power supply bus is provided on the substrate; The input end of the power management module is used to connect to a DC power supply, and the output end 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 collect input power supply information and output power supply information of the power management module; The charge and discharge control module is connected to the power supply bus and is used to connect the charge and discharge gun; The central processing module is connected to the control end of the power management module, the power supply information acquisition module and the charge and discharge control module, and is used to control the power management module and the charge and discharge control module to work according to the input power supply information and the output power supply information.

2. The charge and discharge 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 end of the DC / AC inverter module is used to connect the DC power supply, the output end of the DC / AC inverter module is connected to the first end of the first switch module, the second end of the first switch module is connected to the power supply bus, and the control end of the first switch module is connected to the central processing module.

3. The charge and discharge control device according to claim 2, characterized in that: The first switch module includes a solid-state relay.

4. The charge and discharge control device according to claim 1, characterized in that: The charge and discharge control device further includes a temperature acquisition module; the temperature acquisition module is connected to the central processing module and is used to collect 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 charge and discharge control module; The central processing module is used to control the operation of the power management module and the charge and discharge control module according to 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 charge and discharge control device according to claim 1, characterized in that: The charge and discharge control module includes a first isolating switch and a control steering circuit; The first end of the isolating switch is connected to the power supply bus, and the second end of the isolating switch is used to connect the charging and discharging gun; The control end of the control guidance circuit is connected to the central processing module, and the output end of the control guidance circuit is used to connect the charge and discharge gun.

6. The charge and discharge control device according to claim 1, characterized in that: The number of the charge and discharge control modules includes at least two; one end of each of the charge and discharge control modules is connected to the power supply bus, and the other end is used to connect to one of the charge and discharge guns.

7. The charge and discharge control device according to claim 6, characterized in that: At least two of the charge and discharge control modules are plugged into the substrate.

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

9. A charge and discharge control device, characterized in that: A device comprising a housing and a charge and discharge control device as claimed in any one of claims 1 to 8; The housing is provided with a first connection end, a second connection end and a third connection end; The first connection end is connected to the input end of the power management module and is used to connect to the DC power supply; The second connection end is connected to the charge and discharge control module and is used to connect the charge and discharge gun; The third connection end is connected to the power supply bus and is used to connect to an electrical load.

10. A charge and discharge control system, characterized in that: It includes a DC power supply, an electrical load, a charge and discharge gun, and a charge and discharge control device as claimed in claim 9; The DC power supply is connected to the first connection end; The charging and discharging gun is connected to the second connection end and is used to connect to a vehicle; The electrical load is connected to the third connection end.

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