A quick-detachable circuit board for new energy vehicles

Abstract

The present invention belongs to the technical field of printed circuit boards, and in particular relates to a quick-detachable circuit board for new energy vehicles, comprising a circuit board body and a plurality of multi-pin components mounted on the circuit board body, and further comprising: a plurality of insulating buckle plates, the plurality of insulating buckle plates matching the corresponding multi-pin components, the bottom of each insulating buckle plate being provided with a plurality of pin snap-in grooves, the pins of the multi-pin components being snapped into the corresponding pin snap-in grooves; a plurality of top plates being arranged above the circuit board body, each of the top plates being provided with a pressing and fixing mechanism, the pressing and fixing mechanism being used to apply pressure to the insulating buckle plates. The present invention can quickly disassemble and assemble the multi-pin components on the circuit board body through the pressing structure, facilitates maintenance and overhaul, and can prevent the temperature rise from affecting the contact stability of the electrical contacts between the pins and the circuit board body, while assisting the circuit board in dissipating heat quickly.

Description

Technical Field

[0001] The present invention belongs to the technical field of printed circuit boards, and in particular relates to a quick-detachable circuit board for new energy vehicles. Background Art

[0002] The BMS protection board of new energy vehicles is the core component of battery management. It is responsible for real-time monitoring of battery voltage, current, temperature and other parameters. It ensures safe operation of the battery and extends battery life through functions such as balancing control and overcharge and over-discharge protection. At the same time, it also provides battery status data for the entire vehicle control system. It is a key component to ensure the performance and safety of new energy vehicles.

[0003] At present, in order to improve the maintenance convenience of the BMS protection board, some circuit boards may adopt a quick-release structure to improve the convenience of circuit board disassembly, such as a quick-release circuit board for new energy vehicles disclosed in patent announcement number CN118474989B; in the field of new energy vehicles, common quick-release structures are mainly aimed at the circuit board as a whole, while the BMS protection board is installed with integrated circuit chips, relays and many other components with multiple pins. These component pins are usually connected to the circuit board by soldering. When disassembling and assembling, the pins need to be heated one by one for disassembly, and then they have to be re-soldered. This process is not only inefficient, but also because multiple pins are arranged together, the solder joints between each other are prone to contact, resulting in the need for rework. The overall use effect is poor and cannot meet the needs of efficient repair and maintenance. Summary of the Invention

[0004] The purpose of the present invention is to provide a quick-release circuit board for new energy vehicles in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a quick-detachable circuit board for new energy vehicles, comprising a circuit board body and a plurality of multi-pin components mounted on the circuit board body, and further comprising:

[0006] Multiple insulating gussets are matched with corresponding multi-pin components. The bottom of each insulating gusset is provided with multiple pin snap-in slots, and the pins of the multi-pin components are snapped into the corresponding pin snap-in slots;

[0007] A plurality of top plates are arranged above the circuit board body, and each of the top plates is equipped with a pressing and fixing mechanism for applying pressure to the insulating plate;

[0008] The bottom support unit is installed below the circuit board body and is used to support the bottom of the circuit board body.

[0009] Preferably, each of the pressing and fixing mechanisms includes a pressing buckle plate arranged under the top plate, the end face of the top plate is fixedly plugged with a threaded sleeve, and the threaded sleeve is threadedly connected to a pressing column, and the pressing column applies pressure to the insulating buckle plate through the pressing buckle plate, and the insulating buckle plate and the pressing buckle plate are jointly installed with an edge limiting component.

[0010] Preferably, the bottom support unit includes a bottom plate arranged below the circuit board body, a plurality of strip cavities corresponding to the positions of the top plate are opened inside the bottom plate, and a heat-conducting cover connected to the strip cavities is fixedly installed on the end surface of the bottom plate, the top of each heat-conducting cover is fixedly connected to the bottom of the circuit board body, a cavity is opened inside each top plate, and a pressure fixing mechanism corresponding to the position of the pressing buckle plate is provided inside each cavity, a heat-conducting pressure mechanism is installed inside each heat-conducting cover, liquid cavities are opened on both sides of the end surface of the bottom plate, and each strip cavity is connected to two liquid cavities, and each heat-conducting pressure mechanism is connected to the cavity through the two liquid cavities.

[0011] Preferably, each of the edge limiting assemblies includes a plurality of side blocks arranged on the four sides of the multi-pin component, the side walls of each of the side blocks are fixedly connected with a diagonal pressure rod, and each of the diagonal pressure rods is slidably connected to the side walls of the insulating buckle plate, and the rod ends of each of the diagonal pressure rods are installed with a top block, and pressing protrusions are provided on both sides of the lower end of the pressing buckle plate, and the pressing protrusions are pressed against the end face of the top block.

[0012] Preferably, each of the pressurized fixing mechanisms includes a plurality of cylinder sleeves fixedly mounted on the lower cavity wall, and a pressurized piston is slidably connected to the interior of each cylinder sleeve, a pressurized heat-conducting rod is mounted on the bottom of each pressurized piston, and the bottoms of the plurality of pressurized heat-conducting rods are commonly fixedly connected with a frame-type heat-conducting plate, the frame-type heat-conducting plate is arranged above the pressure buckle plate, a support spring is arranged between each of the pressurized pistons and the lower cavity wall of the cavity, and an elastic sealing film is encapsulated on the top of each cylinder sleeve.

[0013] Preferably, each of the heat-conducting pressurizing mechanisms includes a magnetic isolation cylinder fixedly plugged into the top of the heat-conducting cover, and the bottom of the magnetic isolation cylinder is against the lower cavity wall of the strip cavity on the same side, the interior of the magnetic isolation cylinder is slidably connected with an expansion piston, and the interior of the magnetic isolation cylinder above the expansion piston is filled with perfluorohexane liquid, a return spring is fixedly arranged between the top of the expansion piston and the top inner wall of the magnetic isolation cylinder, a plurality of liquid grooves are provided at the bottom of the magnetic isolation cylinder, a plurality of support tubes are fixedly plugged into the upper cavity walls of the two liquid passage cavities, and each support tube is connected to the corresponding strip cavity, a one-way valve is installed inside each of the support tubes, and the interior of each of the strip cavities, liquid passage cavities, and cavities is filled with heat-conducting liquid, and the heat-conducting liquid inside each strip cavity enters the cavity along the liquid passage cavity and support tube on one side under the action of the one-way valve, and flows back to the strip cavity along the liquid passage cavity and support tube on the other side.

[0014] Preferably, a pressure switch is installed on the wall of one of the liquid-passing cavities, an electromagnetic block is fixedly installed on the lower wall of each of the strip-shaped cavities located inside the magnetic isolation cylinder on the same side, and a permanent magnet block is installed on the bottom of each of the expansion pistons. The pressure switch is used to detect the pressure of the heat-conducting liquid, and the circuit board body controls the operation of the electromagnetic block according to the electrical signal feedback from the pressure switch.

[0015] Preferably, the end surface of each of the pressing buckle plates is provided with two obliquely symmetrical positioning holes, and the end surface of each of the top plates is slidably plugged with a positioning pin that matches the positioning holes.

[0016] Compared with existing technologies, the advantages of a quick-release circuit board for new energy vehicles are:

[0017] By cooperating with each other among the circuit board main body, multi-pin component, insulating buckle plate, pin clamping groove, top plate and pressing fixing mechanism, the multi-pin component on the circuit board main body is buckled through the buckling structure, and the multi-pin component can be quickly disassembled and assembled, making maintenance and repair convenient.

[0018] The bottom support unit can support the main body of the circuit board to prevent the bottom of the circuit board body from slightly bending due to temperature increase, which may cause the connection between the main body and the pins to become disconnected, thereby ensuring the stability of the pin fixation.

[0019] By setting up a pressurized fixing mechanism and a heat-conducting pressurized mechanism, pressure can be applied to the top of the multi-pin component when the temperature is high to ensure the stability of the connection between the pins and the circuit board body. By cooperating with the set pressure switch, electromagnetic block, and permanent magnet block, the multi-pin component can be assisted to dissipate heat quickly when the temperature is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic structural diagram of a quick-detachable circuit board for new energy vehicles provided by the present invention;

[0021] Figure 2 This is an exploded schematic diagram of a circuit board body, a top plate, and a bottom plate of a quick-detachable circuit board for new energy vehicles provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure of a circuit board body, a top plate, and a bottom plate of a quick-detachable circuit board for new energy vehicles provided by the present invention;

[0023] Figure 4 This is a structural schematic diagram of a quick-detachable insulating gusset plate for a circuit board for new energy vehicles provided by the present invention;

[0024] Figure 5 This is a structural diagram of a quick-detachable pressure buckle plate for a circuit board for new energy vehicles provided by the present invention;

[0025] Figure 6 The invention provides a quick-detachable circuit board for new energy vehicles. Figure 3 A magnified view of the structure of part A;

[0026] Figure 7 This is a bottom-up structural diagram of a frame-shaped heat-conducting plate and a top plate of a quick-detachable circuit board for new energy vehicles provided by the present invention;

[0027] Figure 8 This is a schematic cross-sectional view of a base plate of a quick-detachable circuit board for new energy vehicles provided by the present invention;

[0028] Figure 9 The invention provides a quick-detachable circuit board for new energy vehicles. Figure 8 A magnified view of the structure of part B.

[0029] In the figure: 1 circuit board body, 2 multi-pin component, 3 insulating buckle plate, 4 pin clamping groove, 5 top plate, 6 pressing fixing mechanism, 61 pressing buckle plate, 62 threaded sleeve, 63 pressing column, 7 bottom support unit, 71 bottom plate, 72 strip cavity, 73 heat conductive cover, 74 cavity, 75 liquid cavity, 8 edge limit assembly, 81 side block, 82 oblique pressure rod, 83 top block, 84 pressing protrusion, 9 pressurizing fixing mechanism, 91 cylinder sleeve, 92 pressurizing piston, 93 pressurizing heat conductive rod, 94 frame-type heat conductive plate, 95 support spring, 96 elastic sealing membrane, 10 heat conductive pressurizing mechanism, 101 magnetic isolation cylinder, 102 expansion piston, 103 perfluorohexane liquid, 104 reset spring, 105 liquid groove, 106 support tube, 107 one-way valve, 11 pressure switch, 12 electromagnetic block, 13 permanent magnet block, 14 positioning hole, 15 positioning pin. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figures 1-9 As shown, a quick-detachable circuit board for new energy vehicles includes a circuit board body 1 and a plurality of multi-pin components 2 installed on the circuit board body 1, and further includes: a plurality of insulating gussets 3, the plurality of insulating gussets 3 match the corresponding multi-pin components 2, the bottom of each insulating gusset 3 is provided with a plurality of pin clamping grooves 4, the pins of the multi-pin components 2 are all clamped into the corresponding pin clamping grooves 4, and thermal conductive silicone can be applied between the top inner wall of the insulating gusset 3 and the top of the multi-pin component 2 to facilitate the heat conduction of the multi-pin component 2 to the outside. Distributed, multiple top plates 5 are arranged above the circuit board body 1, and each top plate 5 is installed with a pressing and fixing mechanism 6, which is used to apply pressure to the insulating plate 3. Each pressing and fixing mechanism 6 includes a pressing plate 61 arranged below the top plate 5, and the end face of the top plate 5 is fixedly plugged with a threaded sleeve 62, and the threaded sleeve 62 is threadedly connected with a pressing column 63, and the pressing column 63 applies pressure to the insulating plate 3 through the pressing plate 61. The insulating plate 3 and the pressing plate 61 are jointly installed with an edge limiting component 8.

[0032] The end surface of each pressing buckle plate 61 is provided with two obliquely symmetrical positioning holes 14 , and the end surface of each top plate 5 is slidably plugged with a positioning pin 15 matching the positioning hole 14 , which can facilitate accurate positioning of the position of the multi-pin component 2 .

[0033] The bottom support unit 7 is installed below the circuit board body 1 and is used to support the bottom of the circuit board body 1. The bottom support unit 7 includes a bottom plate 71 provided below the circuit board body 1. The bottom plate 71 has a plurality of strip-shaped cavities 72 corresponding to the positions of the top plate 5. A heat-conducting cover 73 connected to the strip-shaped cavities 72 is fixedly installed on the end surface of the bottom plate 71. The top of each heat-conducting cover 73 is fixedly connected to the bottom of the circuit board body 1. A cavity 74 is provided inside each top plate 5. In addition, each cavity 74 is provided with a pressurizing and fixing mechanism 9 corresponding to the position of the pressing buckle plate 61, and each heat-conducting cover 73 is installed with a heat-conducting pressurizing mechanism 10. Liquid cavities 75 are opened on both sides of the end surface of the bottom plate 71, and each strip cavity 72 is connected to two liquid cavities 75. Each heat-conducting pressurizing mechanism 10 is connected to the cavity 74 through the two liquid cavities 75. The support of the heat-conducting cover 73 to the bottom of the circuit board body 1 can prevent the circuit board body 1 from bending and deforming downward.

[0034] Each edge limiting assembly 8 includes a plurality of side blocks 81 arranged on the four sides of the multi-pin component 2, and the side walls of each side block 81 are fixedly connected with an inclined pressure rod 82, and each inclined pressure rod 82 is slidably connected with the side wall of the insulating buckle plate 3, and the rod end of each inclined pressure rod 82 is installed with a top block 83, and pressing protrusions 84 are provided on both sides of the lower end of the pressing buckle plate 61, and the pressing protrusions 84 are pressed against the end surface of the top block 83, which can facilitate the clamping and fixing of the two side walls of the main body of the multi-pin component 2 to prevent the multi-pin component 2 from lateral movement and shaking in the horizontal direction.

[0035] Each pressurizing fixing mechanism 9 includes a plurality of cylinder sleeves 91 fixedly mounted on the lower cavity wall of the cavity 74, and a pressurizing piston 92 is slidably connected to the interior of each cylinder sleeve 91, a pressurizing heat-conducting rod 93 is mounted on the bottom of each pressurizing piston 92, and a frame-type heat-conducting plate 94 is fixedly connected to the bottom of the plurality of pressurizing heat-conducting rods 93, and the frame-type heat-conducting plate 94 is arranged above the pressure buckle plate 61, and a support spring 95 is arranged between each pressurizing piston 92 and the lower cavity wall of the cavity 74, and an elastic sealing film 96 is encapsulated on the top of each cylinder sleeve 91, which can improve the sealing performance of the top of the cylinder sleeve 91 and prevent the heat-conducting liquid from escaping.

[0036] Each heat-conducting pressurizing mechanism 10 includes a magnetic isolation cylinder 101 fixedly plugged into the top of the heat-conducting cover 73, and the bottom of the magnetic isolation cylinder 101 is against the lower cavity wall of the strip cavity 72 on the same side, and the interior of the magnetic isolation cylinder 101 is slidably connected with an expansion piston 102, and the space above the expansion piston 102 inside the magnetic isolation cylinder 101 is filled with perfluorohexane liquid 103, and a return spring 104 is fixedly arranged between the top of the expansion piston 102 and the top inner wall of the magnetic isolation cylinder 101, and a plurality of liquid grooves 105 are provided at the bottom of the magnetic isolation cylinder 101, and a plurality of support tubes 106 are fixedly plugged into the upper cavity walls of the two liquid cavities 75, and each Each support tube 106 is connected to the corresponding strip cavity 72, and a one-way valve 107 is installed inside each support tube 106. The interior of each strip cavity 72, liquid cavity 75, and cavity 74 is filled with heat-conducting liquid. Under the action of the one-way valve 107, the heat-conducting liquid inside each strip cavity 72 enters the cavity 74 along the liquid cavity 75 and the support tube 106 on one side, and flows back to the strip cavity 72 along the liquid cavity 75 and the support tube 106 on the other side. The heat-conducting liquid can be heat-conducting oil. A hole for pouring and replacing the heat-conducting liquid is left at the top of the cavity 74. A sealing structure needs to be provided at the hole to facilitate the subsequent replacement of the heat-conducting liquid.

[0037] A pressure switch 11 is installed on the wall of one of the liquid-passing cavities 75, and an electromagnetic block 12 is fixedly installed on the lower wall of each strip cavity 72 located inside the magnetic isolation cylinder 101 on the same side. A permanent magnet block 13 is installed at the bottom of each expansion piston 102. The pressure switch 11 is used to detect the pressure of the heat-conducting liquid. The circuit board body 1 controls the operation of the electromagnetic block 12 according to the electrical signal feedback from the pressure switch 11. Liquid-proof measures are set at the permanent magnet block 13 and the electromagnetic block 12 to prevent them from direct contact with the heat-conducting liquid, such as adding a non-magnetic liquid-proof cover.

[0038] The operating principle of the present invention is now described as follows: when installing the multi-pin component 2 on the circuit board main body 1, the multi-pin component 2 is pre-clamped into the corresponding insulating clip plate 3 so that the pins of the multi-pin component 2 are clamped into the corresponding pin clamping grooves 4. Subsequently, the pressing clip plate 61 is clamped on the top of the insulating clip plate 3 and then placed under the corresponding top plate 5. The positioning pin 15 is inserted into the positioning hole 14 so that the multi-pin component 2 is accurately placed in the installation position on the circuit board main body 1. Subsequently, the corresponding pressing column 63 is twisted, and the pressing column 63 moves downward to apply pressure to the pressing clip plate 61, so that the multi-pin component 2 can be fixed to the circuit board main body 1 through the pressing clip plate 61 and the insulating clip plate 3. At this point, the installation and fixation of the multi-pin component 2 is completed;

[0039] During the use of the circuit board body 1, since the circuit board body 1 needs to monitor the battery voltage, current, temperature and other parameters in real time and ensure the safe operation of the battery through functions such as balancing control and overcharge and over-discharge protection, the components on the circuit board body 1 will generate heat during operation. Moreover, since the multi-pin component 2 generally integrates more functional modules and needs to process complex signals, the heat generated by the multi-pin component 2 is generally high. As the temperature rises, the heat is transferred to the perfluorohexane liquid 103 inside it through the heat-conducting cover 73 and the magnetic isolation cylinder 101. When the temperature rises to about 56°C, the perfluorohexane liquid 103 begins to convert from liquid to gas. Therefore, the pressure inside the magnetic isolation cylinder 101 above the expansion piston 102 begins to increase. At this time, the expansion piston 102 begins to move downward, thereby increasing the pressure of the heat-conducting liquid inside the strip cavity 72. Under the action of pressure, part of the heat-conducting liquid inside the strip cavity 72 is transferred to the liquid passage cavity 75 on one side, and the heat-conducting liquid inside the liquid passage cavity 75 enters the top plate through the support tube 106 on the same side. 5, thereby increasing the pressure of the heat-conducting liquid inside the cavity 74. Under the action of pressure, each elastic sealing membrane 96 begins to expand and bulge downward, thereby pushing each pressurizing piston 92 downward. Each pressurizing piston 92 can move the frame-type heat-conducting plate 94 downward through the pressurizing heat-conducting rod 93, and the frame-type heat-conducting plate 94 will contact the pressing buckle plate 61. When the temperature of the circuit board body 1 increases, its substrate may be slightly bent due to thermal expansion. At this time, since the pressurizing heat-conducting rod 93 applies downward pressure to the pressing buckle plate 61 through the frame-type heat-conducting plate 94, the pressure between the pins of each multi-pin component 2 and the circuit board body 1 will also increase. Under the support of the heat-conducting cover 73 below the circuit board body 1, the position of the circuit board body 1 at the multi-pin component 2 is not easily deformed, thereby ensuring the stability of the connection between the pins of the multi-pin component 2 and the electrical contacts on the circuit board body 1, and avoiding deformation of the circuit board body 1 caused by temperature, which affects the stable connection between the multi-pin component 2 and the circuit board body 1.

[0040] At the same time, when the temperature rises, the pressure of the heat-conducting liquid increases due to the downward movement of the expansion piston 102. At this time, the moving contact of the pressure switch 11 will be closed under the pressure of the heat-conducting liquid, so the pressure switch 11 will feedback an electrical signal to the control end of the circuit board body 1. At this time, the control end of the circuit board body 1 will control its own timing module to start timing. After the timing reaches 5 minutes, the control end of the circuit board body 1 controls the electromagnetic block 12 to energize for 5 seconds. When the electromagnetic block 12 is energized, under the effect of like-charge repulsion, the permanent magnet block 13 will drive the expansion piston 102 to move back a certain distance. At this time, since the pressure of the heat-conducting liquid is reduced, the excess heat-conducting liquid inside the cavity 74 will flow back to each strip cavity through the support tube 106 and the liquid cavity 75 on the other side. 72, after 5 seconds, due to the disappearance of the magnetic repulsion, the expansion piston 102 moves down again under the pressure of the perfluorohexane liquid 103 being converted into gas, thereby pushing the heat-conducting liquid inside the strip cavity 72 to transfer to the inside of the cavity 74 again. The timing module of the control end of the circuit board body 1 counts again. After 5 minutes, the electromagnetic block 12 works again, and the cycle repeats, thereby allowing the heat-conducting liquid to circulate in the strip cavity 72, the liquid passage cavity 75, the support tube 106, and the inside of the cavity 74. After the heat-conducting liquid near the multi-pin component 2 absorbs heat, it circulates and dissipates the heat quickly, thereby helping to reduce the temperature of the multi-pin component 2 and facilitating the working stability of the circuit board body 1.

[0041] When the multi-pin component 2 on the circuit board body 1 needs to be disassembled for maintenance, the pressing column 63 is twisted to separate it from the pressing plate 61, and then the pressing plate 61, the insulating plate 3 and the multi-pin component 2 are pulled out from under the top plate 5. The disassembly is convenient and simple.

[0042] Among them, the number of pins of the multi-pin component 2 is generally higher than 3 pairs, and the aforementioned buckling structure can be used to achieve quick disassembly and assembly. At the same time, since the thickness of each multi-pin component 2 is different, the bottom of the top plate 5 can be provided with corresponding protrusions according to the multi-pin components 2 of different thicknesses to ensure that the pressing column 63 and the frame-type heat conducting plate 94 can be smoothly pressed against the top of the pressing buckle plate 61. When designing the circuit board main body 1, the spacing and position of the multi-pin components 2 are reasonably distributed so that they are distributed in rows along the top plate 5 for easy disassembly and assembly.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-release circuit board for new energy vehicles, comprising a circuit board body (1) and a plurality of multi-pin components (2) mounted on the circuit board body (1), characterized in that: Also includes: A plurality of insulating clips (3) are matched with corresponding multi-pin components (2), and a plurality of pin snap-in slots (4) are provided at the bottom of each insulating clip (3), and the pins of the multi-pin component (2) are snapped into the corresponding pin snap-in slots (4); A plurality of top plates (5) are arranged above the circuit board body (1), and each of the top plates (5) is equipped with a pressing and fixing mechanism (6), and the pressing and fixing mechanism (6) is used to apply pressure to the insulating buckle plate (3); A bottom support unit (7) is installed below the circuit board body (1) and is used to support the bottom of the circuit board body (1); Each of the pressing and fixing mechanisms (6) includes a pressing plate (61) arranged below the top plate (5); a threaded sleeve (62) is fixedly inserted into the end surface of the top plate (5); and the threaded sleeve (62) is threadedly connected to a pressing column (63); the pressing column (63) applies pressure to the insulating plate (3) through the pressing plate (61); and the insulating plate (3) and the pressing plate (61) are jointly equipped with an edge limiting assembly (8); The bottom support unit (7) comprises a bottom plate (71) arranged below the circuit board body (1), a plurality of strip-shaped cavities (72) corresponding to the positions of the top plate (5) are provided inside the bottom plate (71), and a heat-conducting cover (73) connected to the strip-shaped cavities (72) is fixedly installed on the end surface of the bottom plate (71), the top of each heat-conducting cover (73) is fixedly connected to the bottom of the circuit board body (1), and a cavity (74) is provided inside each top plate (5). ), and each cavity (74) is provided with a pressurizing fixing mechanism (9) corresponding to the position of the pressing buckle plate (61), and each heat-conducting cover (73) is provided with a heat-conducting pressurizing mechanism (10), and both sides of the end surface of the bottom plate (71) are provided with liquid-passing cavities (75), and each strip-shaped cavity (72) is connected to two liquid-passing cavities (75), and each heat-conducting pressurizing mechanism (10) is connected to the cavity (74) through the two liquid-passing cavities (75).

2. A quick-release circuit board for new energy vehicles according to claim 1, characterized in that: Each of the edge limiting assemblies (8) comprises a plurality of side blocks (81) arranged on four sides of the multi-pin component (2); the side walls of each of the side blocks (81) are fixedly connected to an inclined pressure rod (82), and each of the inclined pressure rods (82) is slidably connected to the side walls of the insulating buckle plate (3); the rod ends of each of the inclined pressure rods (82) are installed with a top block (83); both sides of the lower end of the pressing buckle plate (61) are provided with pressing protrusions (84), and the pressing protrusions (84) are pressed against the end surface of the top block (83).

3. The quick-release circuit board for new energy vehicles according to claim 1, characterized in that: Each of the pressurizing fixing mechanisms (9) includes a plurality of cylinder sleeves (91) fixedly mounted on the lower wall of the cavity (74), and a pressurizing piston (92) is slidably connected to the interior of each cylinder sleeve (91), a pressurizing heat-conducting rod (93) is mounted on the bottom of each pressurizing piston (92), and the bottoms of the plurality of pressurizing heat-conducting rods (93) are fixedly connected to a frame-type heat-conducting plate (94), the frame-type heat-conducting plate (94) is arranged above the pressing buckle plate (61), a supporting spring (95) is arranged between each of the pressurizing pistons (92) and the lower wall of the cavity (74), and an elastic sealing film (96) is encapsulated on the top of each of the cylinder sleeves (91).

4. The quick-release circuit board for new energy vehicles according to claim 1, characterized in that: Each of the heat-conducting pressurizing mechanisms (10) comprises a magnetic isolation cylinder (101) fixedly plugged into the top of the heat-conducting cover (73), and the bottom of the magnetic isolation cylinder (101) abuts against the lower cavity wall of the strip cavity (72) on the same side, the interior of the magnetic isolation cylinder (101) is slidably connected with an expansion piston (102), and the space inside the magnetic isolation cylinder (101) above the expansion piston (102) is filled with perfluorohexane liquid (103), a return spring (104) is fixedly arranged between the top of the expansion piston (102) and the top inner wall of the magnetic isolation cylinder (101), and a plurality of liquid passage grooves (105) are provided at the bottom of the magnetic isolation cylinder (101). A plurality of support tubes (106) are fixedly connected to the upper cavity walls of the two liquid-passing cavities (75), and each support tube (106) is connected to the corresponding strip-shaped cavity (72). A one-way valve (107) is installed inside each support tube (106). The interior of each strip-shaped cavity (72), liquid-passing cavity (75), and cavity (74) is filled with heat-conducting liquid. Under the action of the one-way valve (107), the heat-conducting liquid inside each strip-shaped cavity (72) enters the cavity (74) along the liquid-passing cavity (75) and the support tube (106) on one side, and flows back into the strip-shaped cavity (72) along the liquid-passing cavity (75) and the support tube (106) on the other side.

5. The quick-release circuit board for new energy vehicles according to claim 4, characterized in that: A pressure switch (11) is installed on the wall of one of the liquid-passing cavities (75), an electromagnetic block (12) is fixedly installed on the lower cavity wall of each of the strip-shaped cavities (72) located inside the magnetic isolation cylinder (101) on the same side, and a permanent magnet block (13) is installed on the bottom of each of the expansion pistons (102). The pressure switch (11) is used to detect the pressure of the heat-conducting liquid, and the circuit board body (1) controls the operation of the electromagnetic block (12) according to the electrical signal fed back by the pressure switch (11).

6. The quick-release circuit board for new energy vehicles according to claim 1, characterized in that: The end surface of each pressing buckle plate (61) is provided with two obliquely symmetrical positioning holes (14), and the end surface of each top plate (5) is slidably plugged with a positioning pin (15) matching the positioning holes (14).

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