Current control module, control panel and charging pile

Abstract

The utility model discloses a current control module, control panel and charging pile relates to relay technical field, wherein current control module includes base plate and a plurality of relay unit, base plate is equipped with first communication interface, first communication interface is used for the communication connection with main circuit board, base plate is equipped with copper bar, copper bar is used for the electric connection with external power supply, and the relay unit is used for the relay unit. The plurality of relay units are arranged on the bottom plate, each relay is provided with a leading-in terminal and a leading-out terminal, the leading-in terminals are electrically connected with the copper bars, and the leading-out terminals are used for being electrically connected with a power module of the main circuit board; according to the technical scheme provided by the utility model, the heat generated by the relay and the copper bar does not directly influence sensitive electronic components, the overall temperature of the PCB is reduced, the complexity of heat dissipation design is reduced, the requirements on an independent relay driving power supply and a driving chip can be reduced by using the onboard relay, and the reuse rate of the device is improved. The design enables the layout of devices on the PCB to be more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, and in particular to a current control module, a control panel and a charging pile. Background Art

[0002] With the increasing popularity of electric vehicles, the technological development of charging piles, as the energy supply facilities for electric vehicles, has also received increasing attention. In the design of charging piles, power distribution technology is a very critical part, which directly affects the performance, safety and cost-effectiveness of the charging pile.

[0003] Existing power distribution technologies for electric vehicle DC charging piles face several challenges, including high heat generation, difficult heat dissipation design, high design costs, and lack of standardization.

[0004] In traditional designs, high-voltage actuators (such as relays) and strong electrical circuits such as copper busbars are usually integrated on the same PCB as sensitive electronic components such as IC chips. This makes it difficult to effectively dissipate the heat generated by the relays and copper busbars when working under high loads, affecting the stability and lifespan of the electronic components. In addition, since each PCB requires an independent relay driver power supply and driver chip components, the device reuse rate is low, increasing design and manufacturing costs. In response to the needs of different system structures, the relevant control components on the PCB board need to be changed accordingly, which is not conducive to the formation of a standardized design and affects the mass production and efficient update iteration of charging piles. Utility Model Content

[0005] The main purpose of the utility model is to provide a current control module, a control panel and a charging pile, aiming to simplify the heat dissipation design and improve the reuse rate of the device, thereby improving the reliability of the relay control.

[0006] To achieve the above objectives, the current control module proposed in the present invention includes:

[0007] A base plate, wherein the base plate is provided with a first communication interface, the first communication interface is used for communication connection with the main circuit board, and the base plate is provided with a copper busbar, the copper busbar is used for electrical connection with an external power supply;

[0008] A plurality of relay units are provided on the base plate, the relays having an input terminal and an output terminal, the input terminal being electrically connected to the copper bus, and the output terminal being electrically connected to the power module of the main circuit board.

[0009] In one embodiment, a plurality of the relay units are evenly spaced apart on the bottom plate and arranged along the length direction of the bottom plate.

[0010] In one embodiment, the current control module is provided with two copper bars, the two copper bars are in contact with each other, and the two copper bars are electrically connected to the external power supply and the plurality of relay units.

[0011] In one embodiment, the current control module includes 4 to 16 relay units, and the plurality of relay units are all disposed on the base plate.

[0012] In one embodiment, the plurality of relay units are connected to the base plate by welding.

[0013] In one embodiment, the copper busbar is provided with a plurality of welding points, the plurality of welding points are connected to the bottom plate, and each of the welding points corresponds to a main contact of the relay unit.

[0014] In one embodiment, the first communication interface is provided with a plurality of pins, and each pin corresponds to one of the relay units.

[0015] The utility model also provides a control panel, comprising:

[0016] a main circuit board, the main circuit board being provided with a controller unit and a second communication interface, the second communication interface being communicatively connected to the first communication interface; and

[0017] In the current control module as described above, the plurality of relay units are electrically connected to the main circuit board.

[0018] In one embodiment, the main circuit board is provided with a power module, and the power module is electrically connected to the plurality of relay units.

[0019] The present invention further provides a charging pile, comprising the control panel as described above, the control panel comprising:

[0020] a main circuit board, the main circuit board being provided with a controller unit and a second communication interface, the second communication interface being communicatively connected to the first communication interface; and

[0021] In the current control module as described above, the plurality of relay units are electrically connected to the main circuit board.

[0022] The technical solution of the present utility model proposes a current control module, a control panel, and a charging pile, wherein the current control module includes a base plate and a plurality of relay units, the base plate is provided with a first communication interface, the first communication interface is used to communicate with the main circuit board, the base plate is provided with a copper busbar, the copper busbar is used to electrically connect to an external power supply, and the plurality of relay units are arranged on the base plate and respectively connected to the copper busbar and the power module on the main circuit board through the lead-in and lead-out terminals. In this solution, the main circuit board of the control panel and the current control module with relays are divided into two, and the two structures do not interfere with each other and are communicated and electrically connected through different wiring harnesses. This layout prevents the heat generated by the relays and the copper busbar from directly affecting sensitive electronic components, thereby reducing the overall temperature of the PCB and reducing the complexity of the heat dissipation design. By using on-board relays, the demand for independent relay drive power supplies and drive chips can be reduced, thereby improving the reuse rate of the devices. This design makes the device layout on the PCB board more flexible and can be quickly adjusted according to different system structure requirements, thereby improving the versatility and scalability of the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of an embodiment of a current control module provided by the present utility model;

[0025] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 3 A schematic diagram of the three-dimensional structure of the current control module provided by the utility model;

[0027] Figure 4 This is a structural diagram of the current control module from another angle;

[0028] Figure 5 A schematic diagram of the control panel structure.

[0029] Description of Figure Numbers:

[0030] 100, current control module; 1, base plate; 11, first communication interface; 2, copper busbar; 21, welding point; 3, relay unit; 31, relay body; 32, lead-in terminal; 321, input wiring harness; 33, lead-out terminal; 331, output wiring harness; 200, main circuit board; 210, second communication interface; 220, controller unit; 300, communication wiring harness; 400, external power supply.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] This utility model proposes a current control module, which aims to simplify the heat dissipation design and improve the reuse rate of the device, thereby improving the reliability of the relay control. Figures 1 to 5 This is a structural diagram of an embodiment of the current control module and control panel provided by the present utility model.

[0036] Please refer to Figures 1 to 5 The present invention proposes a current control module 100 including a base plate 1 and a plurality of relay units 3. The base plate 1 is provided with a first communication interface 11, which is used for communication connection with the main circuit board 200. The base plate 1 is provided with a copper bus 2, which is used for electrical connection with an external power supply 400. The plurality of relay units 3 are arranged on the base plate 1. The relay has an input terminal 32 and an output terminal 33. The input terminal 32 is electrically connected to the copper bus 2, and the output terminal 33 is used for electrical connection with the power module of the main circuit board 200.

[0037] The present invention provides a current control module 100, a control panel, and a charging station. The current control module 100 includes a base plate 1 and multiple relay units 3. The base plate 1 is provided with a first communication interface 11 for communication with a main circuit board 200. The base plate 1 is provided with a copper busbar 2 for electrical connection to an external power source 400. The multiple relay units 3 are mounted on the base plate 1 and connected to the copper busbar 2 and the power module on the main circuit board 200 via lead-in and lead-out terminals 33, respectively. In this embodiment, the main circuit board 200 of the control panel and the current control module 100 with relays are separated into two parts. The two parts are structurally independent of each other and are connected for communication and electrical connection via separate wiring harnesses. This layout prevents heat generated by the relays and copper busbar 2 from directly affecting sensitive electronic components, reducing the overall temperature of the PCB and the complexity of the heat dissipation design. By using onboard relays, the need for independent relay driver power supplies and driver chips is reduced, thereby increasing device reuse. This design allows for more flexible device layout on the PCB, allowing for quick adjustment to meet different system architecture requirements, thereby improving the design's versatility and scalability.

[0038] In one embodiment of the present invention, the number of relay units 3 can be flexibly selected between 4 and 16 as needed, which provides great flexibility for the design of the charging pile. This flexibility allows designers to select the appropriate number of relay units 3 according to different application scenarios and power requirements, thereby achieving the optimal balance between performance and cost. At the same time, this design can also improve the scalability and maintainability of the system, and the number of relay units 3 can be easily increased or decreased to adapt to different system upgrades or maintenance needs. In addition, this flexibility also helps to improve production efficiency by quickly adjusting the design scheme to meet different market needs. The flexible selection of the number of relay units 3 provides greater flexibility, scalability, maintainability and production efficiency for the design of the charging pile, thereby improving the performance and reliability of the entire system.

[0039] The relay units 3 can be evenly spaced or individually arranged according to actual needs. The present invention does not limit this. In one embodiment of the present invention, a plurality of relay units 3 are evenly spaced on the bottom plate 1 and arranged along the length direction of the bottom plate 1. For details, please refer to Figure 1 and Figure 3 This layout helps optimize the circuit board's heat dissipation, as the evenly distributed relay units 3 reduce local hot spots, thereby lowering the overall circuit board temperature and improving system stability and reliability. Furthermore, the even spacing improves the mechanical strength and durability of the baseboard 1 by reducing the risk of damage due to localized stress concentrations. Furthermore, this layout enhances the aesthetics and neatness of the baseboard 1, making the circuit board easier to maintain and repair.

[0040] Since the current control module 100 proposed in the present invention is generally used in the DC high-voltage charging scenario of electric vehicles, when the charging power of a single gun is too high, the relay and copper busbar 2 also need to flow a large current. When the current passes through the copper busbar 2, heat is generated. If the current exceeds the designed carrying capacity of the copper busbar 2, the temperature of the copper busbar 2 will rise rapidly. Long-term overheating may damage the copper busbar 2, reduce its conductivity, and even cause the copper busbar 2 to deform or melt. In view of this, in one embodiment of the present invention, the current control module 100 is provided with two copper busbars 2, which are abutted and electrically connected to the external power supply 400 and multiple relay units 3. The design of connecting two copper busbars 2 in parallel can effectively solve the problem caused by excessive current in a single copper busbar 2. This design disperses the current and reduces the current density on each copper busbar 2, thereby reducing temperature rise and voltage drop, maintaining the voltage stability of the system. At the same time, increasing the heat dissipation area improves the overall heat dissipation efficiency, helping to keep the temperature of the copper busbar 2 and electronic components within a reasonable range. In addition, the parallel copper busbars 2 also enhance the overall mechanical stability, reduce the vibration and electrodynamic effects caused by the current, and ensure the stability of the connection.

[0041] The relay unit 3 and the copper busbar 2 are both fixed to the base plate 1 by welding. The copper busbar 2 is provided with a plurality of welding points 21, which are connected to the base plate 1. Each welding point 21 corresponds to the main contact of a relay unit 3. By placing the copper busbar 2 close to the relay and ensuring that its welding points 21 are aligned with the main contacts of each relay, combined with the overall copper cladding design of the PCB, the current output capacity can be significantly improved. The low resistance and high conductivity of the copper busbar 2, coupled with the optimized layout, reduce the length of the current path, thereby reducing resistance and energy loss. In addition, multiple relays are connected in parallel to the copper busbar 2 to achieve current superposition, so that the overall design can withstand a larger current load. For example, if each relay can withstand a current of 150A, then two relays in parallel can achieve a current output of 300A. This design also has good scalability. By connecting additional copper busbars 2 in parallel, the current output capacity can be further improved, such as from 300A to 600A, to meet the needs of supercharging power scheduling. Therefore, this design based on copper busbar 2 and relays can not only achieve high current output, but also has good flexibility and scalability, and can adapt to the needs of different power distribution application scenarios.

[0042] In this design, all relays are independently mounted on the base plate 1, serving as a secondary circuit board. The MCU control module, power module, and other components are mounted on the main circuit board 200. The main circuit board 200 and the current control module 100 together form a control panel. The main circuit board 200 and the secondary circuit boards are spaced apart. Accordingly, the controller unit 220 on the main circuit board 200 controls the on / off switching of the relays based on circuit parameters. The MCU (microcontroller unit) 220 outputs digital signals to control the on / off switching of the relay units 3. These signals are typically low or high levels, and after amplification by the driver circuit, they activate the relays. The MCU's control is based on a preset program or logic. It monitors input signals (such as those from sensors) and determines whether to activate the relays based on their status. For example, in a temperature control system, the MCU might activate a relay to start the cooling system when the temperature exceeds a set threshold. The controller unit 220 communicates with the relay units 3 on the secondary circuit board via a communication harness 300. The communication interface has multiple pins, each corresponding to a relay unit 3, enabling individual control of multiple relay units 3.

[0043] The present invention also proposes a charging pile, which includes the above-mentioned control panel. The specific structure of the current control module 100 in the control panel refers to the above-mentioned embodiment. Since this charging pile adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0044] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A current control module, characterized in that: include: A base plate, wherein the base plate is provided with a first communication interface, the first communication interface is used for communication connection with the main circuit board, and the base plate is provided with a copper busbar, the copper busbar is used for electrical connection with an external power supply; A plurality of relay units are provided on the base plate, the relays having an input terminal and an output terminal, the input terminal being electrically connected to the copper bus, and the output terminal being electrically connected to the power module of the main circuit board.

2. The current control module according to claim 1, wherein: The plurality of relay units are evenly spaced apart on the bottom plate and arranged along the length direction of the bottom plate.

3. The current control module according to claim 2, wherein: The current control module is provided with two copper bars, the two copper bars are in contact with each other, and the two copper bars are electrically connected to the external power supply and the plurality of relay units.

4. The current control module according to any one of claims 1 to 3, characterized in that: The current control module includes 4 to 16 relay units, and the plurality of relay units are all arranged on the base plate.

5. The current control module according to any one of claims 1 to 3, characterized in that: The plurality of relay units are connected to the base plate by welding.

6. The current control module according to any one of claims 1 to 3, characterized in that: The copper busbar is provided with a plurality of welding points, and the plurality of welding points are connected to the bottom plate, and each of the welding points corresponds to a main contact of the relay unit.

7. The current control module according to any one of claims 1 to 3, characterized in that: The first communication interface is provided with a plurality of pins, and each pin corresponds to one of the relay units.

8. A control panel, characterized in that: include: A main circuit board, wherein the main circuit board is provided with a controller unit and a second communication interface, wherein the second communication interface is communicatively connected to the first communication interface; and According to the current control module according to any one of claims 1 to 7, the plurality of relay units are electrically connected to the main circuit board.

9. The control panel according to claim 8, wherein: The main circuit board is provided with a power module, and the power module is electrically connected to the plurality of relay units.

10. A charging pile, characterized in that: Comprising a control panel as claimed in any one of claims 8 to 9.

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