A circuit board for a power battery of a new energy vehicle

Abstract

The present invention discloses a circuit board for a power battery of a new energy vehicle, which belongs to the technical field of circuit boards, and comprises a circuit board body and a protective shell for installing the circuit board body, wherein the circuit board body is located inside the protective shell, and adapter plugs are embedded at both ends of the protective shell, and the ends of the adapter plugs facing each other penetrate into the inner cavity of the protective shell and fit the circuit board body. The present invention fixes and limits the protective cover plate and the protective shell by a limiting component, and at the same time extrude the sealing strip to achieve sealing protection for the circuit board body, and at the same time, the circuit board body is electrically connected to an external connection by using the adapter plug to ensure the normal operation of the circuit board body, and then the heat dissipation structure is used to diffuse the heat generated by the operation of the internal circuit board body, and at the same time, it can avoid the circuit board body being directly connected to the external space, causing the external heat to enter the inside of the protective shell, and effectively protect the circuit board body.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit boards, and in particular to a circuit board for a power battery of a new energy vehicle. Background Art

[0002] Power batteries are the power source for tools, mostly referring to batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. Power batteries are the core components of new energy vehicles and an important direction for future energy transformation. Power batteries are equipped with circuit boards to ensure the normal operation of power batteries.

[0003] In the prior art, the Chinese invention with authorization announcement number: CN211654985U discloses a circuit board for a power battery of a new energy vehicle, including a circuit board layer, a sleeve frame, a heat conducting plate, a solder mask layer, an ear plate, and a support plate. The invention changes the circuit board structure of the power battery of the traditional new energy vehicle. The heat conducting plate, the heat conducting sheet and the heat dissipating plate are arranged in the middle of the circuit board, and the heat dissipating protrusion block at the bottom is arranged, which can effectively improve the high temperature problem generated by the power battery when working for a long time. The heat emitted by the circuit board layer can be conducted and emitted from the bottom of the sleeve frame, thereby ensuring the efficient operation of the circuit board layer, so that the heat generated by the circuit board when the power battery is working can be dissipated in time, avoiding the circuit board carrying large current and high voltage. After working for a long time, the temperature is too high, thereby improving the performance and endurance time of the new energy vehicle as a whole, and ensuring the quality and safety of the vehicle.

[0004] In the above technical solution, the circuit board layer is protected by the sleeve frame, but the first heat dissipation hole and the second heat dissipation hole are opened on the sleeve frame, which causes the circuit board layer to be connected with the outside. When the power battery is running, the internal heat will directly enter the sleeve frame along the first heat dissipation hole and the second heat dissipation hole, causing the circuit board layer to be in a high temperature environment, which is not conducive to the normal operation of the power battery circuit board. Summary of the invention

[0005] The purpose of the present invention is to provide a circuit board for a power battery of a new energy vehicle, in which a circuit board body is placed inside through a protective shell and a protective cover plate, and then sealed with a sealing strip to protect the circuit board body. At the same time, the circuit board body can be connected to an external connection through an adapter plug, and a heat dissipation component can be used to diffuse the internal heat to the outside to avoid the circuit board body being in a high-temperature environment inside the power battery, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a circuit board for a power battery of a new energy vehicle, comprising a circuit board body and a protective shell for mounting the circuit board body, wherein the circuit board body is located inside the protective shell, and adapter plugs are embedded at both ends of the protective shell, and the ends of the adapter plugs facing each other penetrate into the inner cavity of the protective shell and fit with the circuit board body, a protective cover plate is arranged on the top of the protective shell, and both ends of the protective cover plate extend outward and are provided with mounting holes, and a sealing strip is arranged between the protective cover plate and the protective shell;

[0007] A slot is provided on the inner side of the protective shell, and the protective cover is plugged into the inner cavity of the slot;

[0008] The inner cavity of the slot is provided with a receiving groove, the inner cavity of the receiving groove is provided with a pressing plate, the sealing strip is located at the upper end of the pressing plate, and the interior of the protective shell is provided with a limiting component for locking the sealing strip;

[0009] It also includes a heat dissipation structure arranged at the bottom of the protective shell.

[0010] Preferably, the limiting assembly includes a plurality of countersunk holes opened on the top of the protective shell, the outer side of the protective cover plate is provided with through holes aligned with the countersunk holes, tensioning screws are movably arranged in the countersunk holes and the through holes, the surface of the pressure plate is provided with threaded holes aligned with the through holes, and one end of the tensioning screw is threadedly connected to the pressure plate through the threaded hole.

[0011] Preferably, the heat dissipation structure includes a heat-conducting column embedded around the bottom of the protective shell, one end of the heat-conducting column penetrates into the inner cavity of the protective shell and fits with the circuit board body, the other end of the heat-conducting column penetrates into the outside of the protective shell and is fixed with a heat dissipation plate, and supporting feet are fixed around the bottom of the protective shell to support the protective shell.

[0012] Preferably, the inner cavity of the protective shell is provided with vertical slots from left to right, the inner cavity of the slots is slidably connected to a limiting frame, the circuit board body is located in the inner cavity of the limiting frame, and the top of the limiting frame is attached to the surface of the protective cover.

[0013] Preferably, the length of the supporting legs is greater than the thickness of the heat sink, and the top of the protective cover is provided with convex points in an array.

[0014] Preferably, a plurality of guide grooves are provided on a side of the heat dissipation plate away from the protective shell, the guide grooves are arranged in a symmetrical arc shape, and the distances between adjacent guide grooves increase successively from the inside to the outside.

[0015] Preferably, the mounting hole is located on the outside of the adapter plug, and the mounting hole is located on the outside of the protective shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention fixes and limits the protective cover plate and the protective shell through a limiting component, and at the same time squeezes the sealing strip to achieve sealing protection for the circuit board body. At the same time, the circuit board body is electrically connected to the external via an adapter plug to ensure the normal operation of the circuit board body. The heat dissipation structure is then used to diffuse the heat generated by the operation of the internal circuit board body. At the same time, it can prevent the circuit board body from being directly connected to the external space, causing the external heat to enter the inside of the protective shell, thereby effectively protecting the circuit board body.

[0018] 2. The present invention not only can install the protective cover plate by using the limiting assembly, but also can use the pressing plate to extrude the sealing strip to achieve a sealed connection between the protective cover plate and the protective shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the split three-dimensional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of a three-dimensional structure of a side cross-section decomposition of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the heat dissipation plate of the present invention;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the circuit board body, the adapter plug and the limit frame of the present invention.

[0024] Numbers in the figure: 1. Circuit board body; 2. Protective shell; 3. Adapter plug; 4. Protective cover; 5. Mounting hole; 6. Sealing strip; 7. Slot; 8. Storage slot; 9. Press plate; 10. Limiting assembly; 101. Countersunk hole; 102. Through hole; 103. Tightening screw; 104. Threaded hole; 11. Heat dissipation structure; 111. Thermal column; 112. Heat sink; 113. Support foot; 12. Slot; 13. Limiting frame; 14. Bump; 15. Guide groove. DETAILED DESCRIPTION

[0025] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0026] The present invention provides Figures 1 to 5 A circuit board for a power battery of a new energy vehicle shown in the figure comprises a circuit board body 1 and a protective shell 2 for mounting the circuit board body 1, the circuit board body 1 is located inside the protective shell 2, adapter plugs 3 are embedded at both ends of the protective shell 2, the facing ends of the adapter plugs 3 penetrate into the inner cavity of the protective shell 2 and fit with the circuit board body 1, a protective cover plate 4 is arranged on the top of the protective shell 2, both ends of the protective cover plate 4 extend outwardly and are provided with mounting holes 5, and a sealing strip 6 is arranged between the protective cover plate 4 and the protective shell 2;

[0027] A slot 7 is provided on the inner side of the protective shell 2, and the protective cover plate 4 is inserted into the inner cavity of the slot 7;

[0028] The inner cavity of the slot 7 is provided with a receiving groove 8, the inner cavity of the receiving groove 8 is provided with a pressing plate 9, the sealing strip 6 is located at the upper end of the pressing plate 9, and the interior of the protective shell 2 is provided with a limiting component 10 for locking the sealing strip 6;

[0029] It also includes a heat dissipation structure 11 disposed at the bottom of the protective shell 2;

[0030] The protective cover plate 4 and the protective shell 2 are fixed and limited by the limiting component 10, and the sealing strip 6 is squeezed at the same time to achieve sealing protection for the circuit board body 1. At the same time, the circuit board body 1 is electrically connected to the external via the adapter plug 3 to ensure the normal operation of the circuit board body 1. Then, the heat dissipation structure 11 is used to diffuse the heat generated by the operation of the internal circuit board body 1. At the same time, it can prevent the circuit board body 1 from being directly connected to the external space, causing the external heat to enter the protective shell 2, thereby effectively protecting the circuit board body 1.

[0031] The limiting assembly 10 includes a plurality of countersunk holes 101 formed on the top of the protective shell 2, a through hole 102 aligned with the countersunk hole 101 formed on the outer side of the protective cover plate 4, and tightening screws 103 are movably provided in the countersunk holes 101 and the through holes 102, and a threaded hole 104 aligned with the through hole 102 is formed on the surface of the pressure plate 9, one end of the tightening screw 103 is threadedly connected to the pressure plate 9 through the threaded hole 104, and the tightening screw 103 is threadedly connected to the threaded hole 104, and the pressure plate 9 is moved by using the protective shell 2, and then the sealing strip 6 is squeezed by using the pressure plate 9, and the protective shell 2 and the protective cover plate 4 are sealed by the sealing strip 6.

[0032] The heat dissipation structure 11 includes a heat-conducting column 111 embedded around the bottom of the protective shell 2, one end of the heat-conducting column 111 penetrates into the inner cavity of the protective shell 2 and fits with the circuit board body 1, the other end of the heat-conducting column 111 penetrates into the outside of the protective shell 2 and is fixed with a heat dissipation plate 112, and support feet 113 for supporting the protective shell 2 are fixed around the bottom of the protective shell 2. The heat-conducting column 111 can not only support the circuit board body 1 to prevent the circuit board body 1 from directly contacting the protective shell 2, causing heat accumulation on one side of the circuit board body 1, but also the heat-conducting column 111 can conduct heat, conduct the heat inside the protective shell 2 to the outside, and reduce the temperature around the circuit board body 1.

[0033] The inner cavity of the protective shell 2 is provided with vertical card slots 12 from left to right, and the inner cavity of the card slot 12 is slidably connected to the limit frame 13. The circuit board body 1 is located in the inner cavity of the limit frame 13, and the top of the limit frame 13 is attached to the surface of the protective cover 4. The circuit board body 1 is limited by the limit frame 13 to make the circuit board body fit with the adapter plug 3, so as to avoid the circuit board body 1 from being loosely connected or the welding joint from being broken due to vibration during the driving of the new energy vehicle.

[0034] The length of the support foot 113 is greater than the thickness of the heat sink 112. The top of the protective cover 4 is provided with an array of bumps 14. By limiting the length of the support foot 113, it is ensured that the heat sink 112 has enough space to dissipate heat outward and ensure air fluidity. At the same time, the bumps 14 can increase the area of ​​the top of the protective cover 4, which helps to dissipate heat.

[0035] A plurality of guide grooves 15 are provided on one side of the heat sink 112 away from the protective shell 2. The guide grooves 15 are symmetrically arranged in an arc shape. The distances between adjacent guide grooves 15 increase from the inside to the outside. By setting the guide grooves 15, the contact area between the heat sink 112 and the air is increased, and a channel is provided for the air flow. Then, the distance between the guide grooves 15 is limited to ensure that the heat accumulated in the middle of the heat sink 112 can be quickly diffused outward.

[0036] The mounting hole 5 is located on the outside of the adapter plug 3 , and the mounting hole 5 is located on the outside of the protective shell 2 . By limiting the position of the mounting hole 5 , it is ensured that after the protective shell 2 is installed, the normal use of the adapter plug 3 is not affected.

[0037] During specific use, the circuit board body 1 is placed inside the protective shell 2 so that the circuit board body 1 contacts the adapter plug 3 to form an electrical path, and then the limit frame 13 is moved horizontally from the slot 7 to the card slot 12, and the circuit board body 1 is limited by the limit frame 13, and then the pressure plate 9 is placed in the storage slot 8, and then the protective cover plate 4 is inserted into the slot 7, so that the countersunk hole 101, the through hole 102 and the threaded hole 104 are aligned, and the tightening screw 103 is used to thread the pressure plate 9, and the pressure plate 9 is pulled upward to squeeze the sealing strip 6, and the sealing strip 6 is used for sealing, and the circuit board body 1 is connected to the power battery by the adapter plug 3. When the circuit board body 1 generates heat during operation, the heat diffuses outward through the heat conducting column 111 and is transferred to the outside air through the heat sink 112.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board for a power battery of a new energy vehicle, comprising a circuit board body (1) and a protective shell (2) for mounting the circuit board body (1), characterized in that: The circuit board body (1) is located inside the protective shell (2), and adapter plugs (3) are embedded at both ends of the protective shell (2). The ends of the adapter plugs (3) facing each other penetrate the inner cavity of the protective shell (2) and fit with the circuit board body (1). A protective cover plate (4) is provided on the top of the protective shell (2), and both ends of the protective cover plate (4) extend outwards and are provided with mounting holes (5). A sealing strip (6) is provided between the protective cover plate (4) and the protective shell (2); A slot (7) is provided on the inner side of the protective shell (2), and the protective cover plate (4) is plugged into the inner cavity of the slot (7); The inner cavity of the slot (7) is provided with a receiving groove (8), the inner cavity of the receiving groove (8) is provided with a pressing plate (9), the sealing strip (6) is located at the upper end of the pressing plate (9), and the interior of the protective shell (2) is provided with a limiting component (10) for locking the sealing strip (6); the limiting component (10) comprises a plurality of groups of countersunk holes (101) provided on the top of the protective shell (2), the outer side of the protective cover plate (4) is provided with a through hole (102) aligned with the countersunk hole (101), a tightening screw (103) is movably provided in the countersunk hole (101) and the through hole (102), the surface of the pressing plate (9) is provided with a threaded hole (104) aligned with the through hole (102), and one end of the tightening screw (103) is threadedly connected to the pressing plate (9) through the threaded hole (104); The protective shell (2) further comprises a heat dissipation structure (11) arranged at the bottom of the protective shell (2), the heat dissipation structure (11) comprising a heat-conducting column (111) embedded around the bottom of the protective shell (2), one end of the heat-conducting column (111) passing through the inner cavity of the protective shell (2) and affixing to the circuit board body (1), the other end of the heat-conducting column (111) passing through the outside of the protective shell (2) and being fixed with a heat dissipation plate (112), and supporting feet (113) for supporting the protective shell (2) being fixed around the bottom of the protective shell (2).

2. A circuit board for a power battery of a new energy vehicle according to claim 1, characterized in that: The inner cavity of the protective shell (2) is provided with vertical slots (12) from left to right, the inner cavity of the slots (12) is slidably connected to a limit frame (13), the circuit board body (1) is located in the inner cavity of the limit frame (13), and the top of the limit frame (13) is attached to the surface of the protective cover plate (4).

3. A circuit board for a power battery of a new energy vehicle according to claim 2, characterized in that: The length of the supporting foot (113) is greater than the thickness of the heat dissipation plate (112), and the top of the protective cover plate (4) is provided with convex points (14) in an array.

4. A circuit board for a power battery of a new energy vehicle according to claim 2, characterized in that: A plurality of guide grooves (15) are provided on a side of the heat dissipation plate (112) away from the protective shell (2); the guide grooves (15) are arranged in a symmetrical arc shape, and the distance between adjacent guide grooves (15) increases from the inside to the outside.

5. The circuit board of a power battery for a new energy vehicle according to claim 1, characterized in that: The mounting hole (5) is located on the outside of the adapter plug (3), and the mounting hole (5) is located on the outside of the protective shell (2).

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