CN214396638U - Protection circuit board for new energy automobile - Google Patents
Protection circuit board for new energy automobile Download PDFInfo
- Publication number
- CN214396638U CN214396638U CN202023220622.5U CN202023220622U CN214396638U CN 214396638 U CN214396638 U CN 214396638U CN 202023220622 U CN202023220622 U CN 202023220622U CN 214396638 U CN214396638 U CN 214396638U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- circuit board
- box body
- new energy
- protection circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000035939 shock Effects 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 3
- 230000004087 circulation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004089 microcirculation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model belongs to a protection circuit board for new energy automobile in protection circuit board field, comprising a box body, the circuit board body, liquid cooling head and cold row lid, box body bottom activity grafting has the bradyseism seat, the equal fixedly connected with sleeve of end wall about in the box body, the activity grafting has the depression bar in the sleeve, the depression bar is kept away from sleeve one end fixedly connected with splint, the fixed joint has the circuit board body between two splint, circuit board body top fixedly connected with liquid cooling head, box body top fixedly connected with cold row lid, fixedly connected with polylith fixed plate in the cold row lid, the fixed joint has the circulation cooling tube in the fixed plate, the left and right sides of cold row lid bottom all fixed intercommunication has the second sealing connector, cold row lid top fixedly connected with forced air cooling apron, the fixed intercommunication in forced air cooling apron top has two tuber pipes, the fixedly connected with guide fan of driving motor output; the protective circuit board is convenient to mount and dismount, can effectively reduce vibration damage, and can efficiently dissipate heat of the circuit board.
Description
Technical Field
The utility model belongs to protection circuit board field, in particular to protection circuit board for new energy automobile.
Background
At present, with the improvement of environmental improvement strength, new energy automobiles are widely popularized by governments as pollution-free vehicles, and in the use process of electric new energy automobiles, the electric energy output and input of batteries are regulated and controlled through circuit boards, so that the circuit boards are usually placed in protective cases for protection.
Traditional circuit board is all fixed through punching on the panel again and through the screw, and this kind of mode is not only installed and is dismantled the trouble, and can produce vibrations when new energy automobile moves again and cause circuit board contact rosin joint easily, harms the circuit board even, and the circuit board can produce a large amount of heat energy when the car is driving simultaneously, if can not in time dispel the heat, can shorten the life of circuit board greatly.
SUMMERY OF THE UTILITY MODEL
The utility model provides a protection circuit board for new energy automobile for solve above-mentioned problem.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a protective circuit board for a new energy automobile, which comprises a box body, a circuit board body, a liquid cooling head and a cold discharging cover, wherein a shock absorption seat is movably inserted at the bottom of the box body, a limiting plate is fixedly connected at the bottom of the box body, a plurality of shock absorption springs are fixedly connected between the bottom end of the limiting plate and the shock absorption seat, sleeves are fixedly connected with the left end wall and the right end wall in the box body, a pressure rod is movably inserted in each sleeve, the pressure rod is fixedly connected with a limiting block close to one end of each sleeve, a compression spring is fixedly connected between each limiting block and each sleeve, a clamping plate is fixedly connected with the pressure rod far away from one end of each sleeve, a circuit board body is fixedly clamped between the two clamping plates, the liquid cooling head is fixedly connected at the top of the circuit board body, a second fixing screw piece is fixedly connected at the left side and the right side of the outer end of the liquid cooling head, heat dissipation fins are fixedly clamped at the bottom of the liquid cooling head, the utility model discloses a cooling device, including box body, liquid cooling head, box body top, box body, air-cooling cover, be equipped with miniature circulating pump, the fixed intercommunication in liquid cooling head has the inlet tube, liquid chamber right-hand member fixedly connected with outlet pipe, the first sealing connector of equal fixedly connected with on inlet tube and the outlet pipe, box body top fixedly connected with cold row lid, fixedly connected with polylith fixed plate in the cold row lid, fixed joint has the circulation cooling tube in the fixed plate, the equal fixed intercommunication in cold row lid bottom left and right sides has second sealing connector, cold row lid top fixedly connected with forced air cooling apron, the fixed intercommunication in forced air cooling cover top has two tuber pipes, three dead levers of end wall fixedly connected with in the tuber pipe, three fixedly connected with CD-ROM drive motor between the dead lever, CD-ROM drive motor output end fixedly connected with draws the fan.
As a preferred technical scheme of the utility model, the first fixed spiral shell piece of the equal fixedly connected with in both ends about the bradyseism seat, the fixed bonding in bradyseism seat bottom has a plurality of buffering silica gel strips, and the convenience is fixed the bradyseism seat, and can effectively alleviate bradyseism seat bottom wearing and tearing.
As the utility model discloses a preferred technical scheme, the wiring groove has been seted up to the box body right-hand member, conveniently carries out the wiring to the circuit board.
As a preferred technical scheme of the utility model, splint top threaded connection has the adjusting bolt, the adjusting bolt bottom fixedly connected with clamp plate, the clamp plate bottom mounting bonds has the slipmat, can fix the circuit board of different thickness, and fixed more firm, is favorable to hoisting device's commonality.
As an optimal technical scheme of the utility model, heat radiation fins and circulation cooling tube are high heat conduction brass material, are favorable to promoting heat conduction efficiency.
As an optimal technical scheme of the utility model, should external connection sealing hose between first sealing connection head and the second sealing connection head, played transmission, endless effect to the coolant liquid.
As a preferred technical scheme of the utility model, the circulation cooling tube is crooked U type range, is favorable to increasing heat transfer area, improves the radiating efficiency.
As a preferred technical scheme of the utility model, the tuber pipe top is equipped with the dust screen, the activity is pegged graft on the dust screen has four fixing bolt, the fixed spiral shell piece of four third of tuber pipe inner wall fixedly connected with, fixing bolt and the fixed spiral shell piece threaded connection of third can not only prevent effectively that external dust impurity from entering into the fit in, and be convenient for dismantle, wash the dust screen.
The utility model discloses the beneficial effect who reaches is: the design through bradyseism seat and bradyseism spring can effectually offset fore-and-aft vibrations influence, and the design through sleeve, depression bar and pressure spring can effectually offset horizontal vibrations influence, and the convenient design through splint, clamp plate and adjusting bolt is fixed the circuit board of different thickness, and the convenient design through the fixed flight of first fixed flight, second and the fixed flight of third dismantles whole device, the maintenance in the later stage of being convenient for.
The liquid cooling head can absorb heat emitted by the circuit board during working, the heat is transmitted to the cold discharge cover through the micro circulating pump, and finally the heat emitted by the circulating radiating pipe can be discharged by driving the induced fan to rotate through the driving motor, so that the circuit board is efficiently radiated, and the service life of the circuit board is prolonged.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural diagram of the present invention;
FIG. 3 is a front sectional view of the box body of the present invention;
fig. 4 is a cross-sectional view of a sleeve according to the present invention;
fig. 5 is a schematic structural view of the liquid cooling head of the present invention;
fig. 6 is a front sectional view of the liquid cooling head of the present invention;
FIG. 7 is a first schematic structural diagram of the middle cooling hood of the present invention;
FIG. 8 is a second schematic structural view of the middle cooling hood of the present invention;
fig. 9 is a first schematic structural view of the air-cooled cover plate of the present invention;
fig. 10 is a schematic structural diagram of the middle air-cooling cover plate of the present invention.
In the figure: 1. a box body; 2. a circuit board body; 3. liquid cooling head; 4. a cold row cover; 5. a cushioning seat; 6. a first fixed blade; 7. buffering the silica gel strip; 8. a limiting plate; 9. a cushioning spring; 10. a wiring slot; 11. a sleeve; 12. a pressure lever; 13. a limiting block; 14. a compression spring; 15. a splint; 16. adjusting the bolt; 17. pressing a plate; 18. a second fixed screw sheet; 19. heat dissipation fins; 20. a liquid chamber; 21. cooling liquid; 22. a micro-circulation pump; 23. a water inlet pipe; 24. a water outlet pipe; 25. a first sealed connector; 26. a fixing plate; 27. circulating heat dissipation pipes; 28. a second sealed connector; 29. an air-cooled cover plate; 30. an air duct; 31. fixing the rod; 32. a drive motor; 33. a fan guide; 34. a dust screen; 35. fixing the bolt; 36. the third fixed screw sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b): as shown in FIGS. 1-10, a protective circuit board for a new energy automobile comprises a box body 1, a circuit board body 2, a liquid cooling head 3 and a cold discharging cover 4, wherein a shock absorption seat 5 is movably inserted at the bottom of the box body 1, a limiting plate 8 is fixedly connected at the bottom of the box body 1, a plurality of shock absorption springs 9 are fixedly connected between the bottom end of the limiting plate 8 and the shock absorption seat 5, sleeves 11 are fixedly connected with the left end wall and the right end wall in the box body 1, pressing rods 12 are movably inserted in the sleeves 11, a limiting block 13 is fixedly connected at one end of each pressing rod 12 close to the sleeve 11, a compression spring 14 is fixedly connected between each limiting block 13 and the sleeve 11, a clamping plate 15 is fixedly connected at one end of each pressing rod 12 far away from the sleeve 11, the circuit board body 2 is fixedly clamped between the two clamping plates 15, the liquid cooling head 3 is fixedly connected at the top of the circuit board body 2, second fixing screw plates 18 are fixedly connected at the left side and the right side of the outer end of the liquid cooling head 3, heat dissipation fins 19 are fixedly clamped at the bottom of the liquid cooling head 3, liquid cavity 20 has been seted up in liquid cold head 3, the intussuseption of liquid cavity 20 is filled with coolant liquid 21, liquid cavity 20 top is equipped with miniature circulating pump 22, liquid cavity 20 left end fixed connection has inlet tube 23, liquid cavity 20 right-hand member fixedly connected with outlet pipe 24, equal first sealing connector 25 of fixedly connected with on inlet tube 23 and the outlet pipe 24, 1 top fixedly connected with cold row lid 4 of box body, fixedly connected with polylith fixed plate 26 in the cold row lid 4, fixed joint has circulation cooling tube 27 in the fixed plate 26, the equal fixed connection of cold row lid 4 bottom left and right sides has second sealing connector 28, 4 top fixedly connected with forced air cooling apron 29 of cold row lid, 29 top fixed connection of forced air cooling apron has two tuber pipes 30, three dead levers 31 of endwall fixedly connected with in 30 of tuber pipe, fixedly connected with driving motor 32 between three dead levers 31, driving motor 32 output end fixedly connected with draws fan 33.
The left end and the right end of the cushioning seat 5 are fixedly connected with first fixing screw pieces 6, and a plurality of buffering silica gel strips 7 are fixedly bonded at the bottom of the cushioning seat 5, so that the cushioning seat 5 is conveniently fixed, and the abrasion of the bottom of the cushioning seat 5 can be effectively reduced; the right end of the box body 1 is provided with a wiring groove 10, so that wiring of a circuit board is facilitated; the top of the clamping plate 15 is in threaded connection with an adjusting bolt 16, the bottom end of the adjusting bolt 16 is fixedly connected with a pressing plate 17, the bottom end of the pressing plate 17 is fixedly bonded with an anti-skid pad, circuit boards with different thicknesses can be fixed, the fixation is firmer, and the universality of the lifting device is facilitated; the heat radiating fins 19 and the circulating heat radiating pipe 27 are made of high-heat-conductivity brass, so that the heat conduction efficiency is improved; a sealing hose is externally connected between the first sealing connector 25 and the second sealing connector 28, so that the cooling liquid 21 is transmitted and circulated; the circulating radiating pipes 27 are arranged in a bent U shape, which is beneficial to increasing the heat transfer area and improving the radiating efficiency; the top of the air pipe 30 is provided with a dust screen 34, four fixing bolts 35 are movably inserted into the dust screen 34, four third fixing screw pieces 36 are fixedly connected to the inner wall of the air pipe 30, the fixing bolts 35 are in threaded connection with the third fixing screw pieces 36, external dust and impurities can be effectively prevented from entering the fitting body, and the dust screen 34 can be conveniently detached and cleaned.
Specifically, when the utility model is used, the press rod 12 is pressed to shorten the press rod 12, the circuit board is placed on the clamping plate 15, the pressing plate 17 is pressed to the lower circuit board by rotating the adjusting bolt 16, and the circuit boards with different thicknesses are conveniently fixed; when the shock absorber is used daily, longitudinal shock influence can be effectively counteracted through the design of the shock absorbing seat 5 and the shock absorbing spring 9, and transverse shock influence can be effectively counteracted through the design of the sleeve 11, the compression bar 12 and the compression spring 14; the liquid cooling head 3 can absorb heat emitted by the circuit board during working, the heat is transmitted into the cold discharge cover 4 through the micro circulating pump 22, and finally the heat emitted by the circulating radiating pipe 27 can be discharged by driving the induced fan 33 to rotate through the driving motor 32, so that the circuit board is efficiently radiated, and the service life of the circuit board is prolonged; and the whole device is conveniently disassembled through the design of the first fixed helical piece 6, the second fixed helical piece 18 and the third fixed helical piece 36, so that the later-stage overhaul is facilitated.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a protection circuit board for new energy automobile, includes box body (1), circuit board body (2), liquid cooling head (3) and cold row lid (4), its characterized in that: the shock absorption box is characterized in that a shock absorption seat (5) is movably inserted at the bottom of the box body (1), a limiting plate (8) is fixedly connected at the bottom of the box body (1), a plurality of shock absorption springs (9) are fixedly connected between the bottom end of the limiting plate (8) and the shock absorption seat (5), sleeves (11) are fixedly connected with the left end wall and the right end wall in the box body (1), a pressing rod (12) is movably inserted in the sleeve (11), a limiting block (13) is fixedly connected at one end, close to the sleeve (11), of the pressing rod (12), a pressing spring (14) is fixedly connected between the limiting block (13) and the sleeve (11), clamping plates (15) are fixedly connected at one end, far away from the sleeve (11), of the pressing rod (12), a circuit board body (2) is fixedly clamped between the two clamping plates (15), a liquid cooling head (3) is fixedly connected at the top of the circuit board body (2), and second fixing screw pieces (18) are fixedly connected at the left side and right side of the outer end of the liquid cooling head (3), the cooling device is characterized in that a heat dissipation fin (19) is fixedly clamped at the bottom of the liquid cooling head (3), a liquid cavity (20) is formed in the liquid cooling head (3), cooling liquid (21) is filled in the liquid cavity (20), a micro circulating pump (22) is arranged at the top of the liquid cavity (20), a water inlet pipe (23) is fixedly communicated with the left end of the liquid cavity (20), a water outlet pipe (24) is fixedly connected with the right end of the liquid cavity (20), a first sealing connector (25) is fixedly connected to the water inlet pipe (23) and the water outlet pipe (24), a cold exhaust cover (4) is fixedly connected to the top of the box body (1), a plurality of fixing plates (26) are fixedly connected to the cold exhaust cover (4), a circulating heat dissipation pipe (27) is fixedly clamped in the fixing plate (26), a second sealing connector (28) is fixedly communicated with the left side and the right side of the bottom of the cold exhaust cover (4), and an air cooling cover plate (29) is fixedly connected to the top of the cold exhaust cover (4), the air-cooled cover plate is characterized in that the top of the air-cooled cover plate (29) is fixedly communicated with two air pipes (30), the inner end wall of each air pipe (30) is fixedly connected with three fixing rods (31) and three driving motors (32) between the fixing rods (31), and the output ends of the driving motors (32) are fixedly connected with induced fans (33).
2. The protection circuit board for the new energy automobile according to claim 1, characterized in that: the damping seat is characterized in that first fixing screw pieces (6) are fixedly connected to the left end and the right end of the damping seat (5), and a plurality of buffering silica gel strips (7) are fixedly bonded to the bottom of the damping seat (5).
3. The protection circuit board for the new energy automobile according to claim 1, characterized in that: the right end of the box body (1) is provided with a wiring groove (10).
4. The protection circuit board for the new energy automobile according to claim 1, characterized in that: the top of the clamping plate (15) is in threaded connection with an adjusting bolt (16), the bottom end of the adjusting bolt (16) is fixedly connected with a pressing plate (17), and an anti-skid pad is fixedly bonded at the bottom end of the pressing plate (17).
5. The protection circuit board for the new energy automobile according to claim 1, characterized in that: the radiating fins (19) and the circulating radiating pipe (27) are made of high-thermal conductivity brass.
6. The protection circuit board for the new energy automobile according to claim 1, characterized in that: and a sealing hose is externally connected between the first sealing connector (25) and the second sealing connector (28).
7. The protection circuit board for the new energy automobile according to claim 1, characterized in that: the circulating radiating pipes (27) are arranged in a bent U shape.
8. The protection circuit board for the new energy automobile according to claim 1, characterized in that: the dustproof net is arranged at the top of the air pipe (30), four fixing bolts (35) are movably inserted into the dustproof net (34), four third fixing screw pieces (36) are fixedly connected to the inner wall of the air pipe (30), and the fixing bolts (35) are in threaded connection with the third fixing screw pieces (36).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202023220622.5U CN214396638U (en) | 2020-12-28 | 2020-12-28 | Protection circuit board for new energy automobile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202023220622.5U CN214396638U (en) | 2020-12-28 | 2020-12-28 | Protection circuit board for new energy automobile |
Publications (1)
Publication Number | Publication Date |
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CN214396638U true CN214396638U (en) | 2021-10-15 |
Family
ID=78041628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202023220622.5U Withdrawn - After Issue CN214396638U (en) | 2020-12-28 | 2020-12-28 | Protection circuit board for new energy automobile |
Country Status (1)
Country | Link |
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CN (1) | CN214396638U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114684036A (en) * | 2020-12-28 | 2022-07-01 | 昆山市华新电路板有限公司 | Protection circuit board for new energy automobile |
-
2020
- 2020-12-28 CN CN202023220622.5U patent/CN214396638U/en not_active Withdrawn - After Issue
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114684036A (en) * | 2020-12-28 | 2022-07-01 | 昆山市华新电路板有限公司 | Protection circuit board for new energy automobile |
CN114684036B (en) * | 2020-12-28 | 2024-05-10 | 昆山市华新电路板有限公司 | Protection circuit board for new energy automobile |
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