CN218525631U

CN218525631U - Lithium cell group charge-discharge protection shield

Info

Publication number: CN218525631U
Application number: CN202221968965.6U
Authority: CN
Inventors: 袁站勇; 王雅娜
Original assignee: Jinhang Huizhong Wuhan Electrical Equipment Co ltd
Current assignee: Jinhang Huizhong Wuhan Electrical Equipment Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-02-24
Anticipated expiration: 2032-07-28

Abstract

The utility model relates to a lithium cell group charge-discharge protection board, including shell and a plurality of lithium cell, it is a plurality of the lithium cell all is located the shell, be equipped with radiator unit in the conch wall of shell, the open position department of shell passes through bolt fixedly connected with heat insulating board, the hold up tank has been seted up in the heat insulating board, the fixed circuit board of having installed on the inner wall of hold up tank. The utility model relates to a. The utility model discloses at the in-process that uses the lithium cell, because the heat of the effect lithium cell production during charge-discharge of heat insulating board can be by very big weakening, only have on the circuit board of a small amount of heat conduction, when the radiator unit moves, can smuggle the gas outgoing in the hold up tank secretly through the air guide subassembly, the heat on the circuit board can be taken away in the air flow in the hold up tank, and then make the temperature in the hold up tank be in suitable scope, avoid the influence of high temperature to the circuit board, prolonged the life of protection shield.

Description

Lithium cell group charge-discharge protection shield

Technical Field

The utility model belongs to the technical field of the technique of lithium cell and specifically relates to a charge-discharge protection board of lithium cell group is related to.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a positive/negative electrode material and uses a non-aqueous electrolyte solution, and the lithium metal has very high requirements on the environment due to the very active chemical characteristics of the lithium metal, so that the lithium metal is processed, stored and used. With the development of scientific technology, lithium batteries have become mainstream, and the lithium batteries can be roughly divided into two types: lithium metal batteries and lithium ion batteries, which do not contain lithium in the metallic state and are rechargeable

In the use of lithium cell, generally organize into lithium cell with a plurality of lithium cells and use, install the protection shield in the outside of lithium cell group and carry out the protection of lithium cell group charge-discharge, the power supply lithium cell group of individual device still can set up the fan and carry out the heat dissipation of lithium cell group, the protection shield of lithium cell group generally sets up in the shell with the lithium cell together, when lithium cell group uses, because the heat that the lithium cell produced makes the protection shield be in high temperature environment for a long time, thereby cause the influence to the electronic component on the protection shield, protection shield electronic component's ageing with higher speed, the life of protection shield is reduced.

SUMMERY OF THE UTILITY MODEL

According to the not enough of prior art existence, the utility model aims at providing a lithium cell group charge-discharge protection shield has the effect that promotes protection shield life.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a lithium cell group charge-discharge protection board, includes shell and a plurality of lithium cell, and is a plurality of the lithium cell all is located the shell, be equipped with radiator unit in the conch wall of shell, the open position department of shell is through bolt fixedly connected with heat insulating board, the hold up tank has been seted up in the heat insulating board, the fixed circuit board of having installed on the inner wall of hold up tank, fixed wearing to be equipped with the joint on the periphery wall of heat insulating board, and connect and be connected through a plurality of connecting wires between the circuit board, be equipped with the air guide subassembly in the heat insulating board.

Through adopting above-mentioned technical scheme, at the in-process that uses the lithium cell, because the heat of the effect lithium cell production when charging and discharging of heat insulating board can be by very big weakening, only can be on the circuit board of a small amount of heat conduction, when the radiator unit moves, can smuggle the gas outgoing in the hold up tank secretly through the air guide subassembly, the heat on the circuit board can be taken away in the air flow in the hold up tank, and then make the temperature in the hold up tank be in suitable scope, avoid the influence of high temperature to the circuit board, the life of protection shield has been prolonged.

The present invention may be further configured in a preferred embodiment as: a plurality of through mount fixed connection between the lithium cell, and the mount is cellular setting, through a plurality of connecting rod fixed connection between the inner wall of mount and shell.

Through adopting above-mentioned technical scheme, through honeycomb mount, when fixed a plurality of lithium cell positions, keep apart the lithium cell, made things convenient for the circulation of air.

The present invention in a preferred embodiment can be further configured to: the heat dissipation assembly comprises a fixing barrel, the fixing barrel is fixedly arranged on one side of the shell in a penetrating mode, a plurality of filter blocks are fixedly arranged on the other side of the shell in a penetrating mode, a fan is arranged in the fixing barrel through a supporting rod, and a filter screen is fixedly connected in an opening of the fixing barrel.

Through adopting above-mentioned technical scheme, take the air in the shell out through the fan to through the dust of filter block and filter screen filtration in the air, and then avoid the circulation of air in-process shell in to inhale external dust.

The present invention in a preferred embodiment can be further configured to: the air guide assembly comprises a plurality of guide pipes and a filter plate, the filter plate is fixedly arranged in the heat insulation plate in a penetrating mode, one end, located in the heat insulation plate, of the filter plate extends into the storage tank, and the interior of the storage tank is communicated with the interior of the fixed cylinder through the guide pipes.

Through adopting above-mentioned technical scheme, at the in-process that fixed cylinder internal air flows, because the effect of negative pressure can be through the pipe with the air suction in the hold up tank in the fixed cylinder to carry out gaseous replenishment by filter department, form stable air current.

The present invention may be further configured in a preferred embodiment as: fixedly connected with shrouding in the pipe, the central point of shrouding puts the department and has seted up the through-hole, wear to be equipped with the elastic mould in the through-hole, be equipped with soft pad between elastic mould and the inner wall that corresponds the through-hole, and soft pad and the inner wall fixed connection who corresponds the through-hole.

Through adopting above-mentioned technical scheme, cooperate the elastic mould through the shrouding and seal the pipe, avoid the gas in the fixed cylinder to flow into in the hold up tank.

The present invention may be further configured in a preferred embodiment as: the two sides of the elastic module are provided with a magnetic ring and a plurality of magnetic blocks, threaded rods penetrate through the positions, corresponding to the magnetic blocks, in the magnetic ring in a rotating mode through bearings, penetrate through the elastic module and extend into the corresponding magnetic blocks, and the threaded rods are in threaded connection with the corresponding magnetic blocks.

Through adopting above-mentioned technical scheme, join in marriage through the magnetism ring, a plurality of magnetism piece cooperation threaded rod carries out the solid fixed ring of installation of elastic mould for the elastic mould can be changed.

The present invention may be further configured in a preferred embodiment as: the position department that corresponds a plurality of magnetic blocks in the shrouding has seted up the spout, slide in the spout and wear to be equipped with the round bar, and the round bar is located the outer one end of corresponding spout and the magnetic block fixed connection who corresponds, be equipped with the spring between round bar and the inner wall that corresponds the spout, and the both ends of spring respectively with the round bar that corresponds and the inner wall fixed connection who corresponds the spout.

Through adopting above-mentioned technical scheme, through mutually supporting of round bar and spring, the distance between expanded elastic mould and the shrouding, and then enlarges the gas output of pipe, has made things convenient for the discharge of the interior gas of holding vessel.

To sum up, the utility model discloses a following at least one kind of useful technological effect:

1. in the process of using the lithium battery, the heat generated in the charging and discharging process of the lithium battery can be greatly weakened under the action of the heat insulation plate, only a small amount of heat can be conducted on the circuit board, when the heat dissipation assembly operates, the air in the storage tank is discharged by being carried by the air guide assembly, the heat on the circuit board can be taken away by the air flowing in the storage tank, so that the temperature in the storage tank is in a proper range, the influence of high temperature on the circuit board is avoided, and the service life of the protection plate is prolonged;

2. through the mutual cooperation of round bar and spring, can expand the distance between elasticity mould and the shrouding, and then enlarge the gas output of pipe, made things convenient for the discharge of the interior gas of holding vessel.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic view showing the internal structure of a part of the catheter according to the present embodiment;

fig. 3 is an enlarged schematic structural diagram of a point a in fig. 2 according to the present embodiment.

In the figure, 1, a housing; 2. a lithium battery; 3. a heat dissipating component; 31. a fixed cylinder; 32. a filter block; 33. a fan; 34. a filter screen; 4. a heat insulation plate; 5. an air guide assembly; 51. a filter plate; 52. a conduit; 53. closing the plate; 54. a through hole; 55. an elastic mold; 56. a soft cushion; 57. a magnetic ring; 58. a magnetic block; 59. a threaded rod; 510. a chute; 511. a round bar; 512. a spring; 6. a storage tank; 7. a circuit board; 8. a joint; 9. a fixed mount; 10. a connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment is as follows:

referring to fig. 1-3, the utility model discloses a charge-discharge protection board is organized to lithium cell 2, including shell 1 and a plurality of lithium cell 2, a plurality of lithium cell 2 all are located shell 1. The lithium batteries 2 are fixedly connected through a fixing frame 9, the fixing frame 9 is in a honeycomb shape, and the fixing frame 9 is fixedly connected with the inner wall of the shell 1 through a plurality of connecting rods 10. Through honeycomb mount 9, when fixing a plurality of lithium cell 2 positions, keep apart lithium cell 2.

A heat dissipation assembly 3 is provided in the wall of the housing 1. The heat dissipation assembly 3 includes a fixing cylinder 31, the fixing cylinder 31 is fixedly disposed through one side of the housing 1, a plurality of filter blocks 32 are fixedly disposed through the other side of the housing 1, the filter blocks 32 are disposed in a hemispherical shape outside the housing 1, a fan 33 is disposed in the fixing cylinder 31 through a support rod, and a filter screen 34 is fixedly connected in an opening of the fixing cylinder 31. The air inside the casing 1 is drawn out by the fan 33, and dust in the air is filtered out by the filter block 32 and the filter net 34.

The opening position department of shell 1 has heat insulating board 4 through bolt fixedly connected with, has seted up hold up tank 6 in the heat insulating board 4, has fixedly installed circuit board 7 on the inner wall of hold up tank 6, and fixed wear to be equipped with on the periphery wall of heat insulating board 4 connects 8, and connects and is connected through a plurality of connecting wires between 8 and the circuit board 7, is equipped with air guide subassembly 5 in the heat insulating board 4. Air guide subassembly 5 includes a plurality of pipes 52 and filter 51, filter 51 is fixed to be worn to locate in the heat insulating board 4, and the one end that filter 51 is located the heat insulating board 4 extends to in the holding vessel 6, inside and the fixed cylinder 31 of holding vessel 6 is inside to be linked together through a plurality of pipes 52, pipe 52 and fixed cylinder 31 sliding connection, fixedly connected with shrouding 53 in the pipe 52, through-hole 54 has been seted up in the central point department of putting of shrouding 53, wear to be equipped with elastic die 55 in the through-hole 54, be equipped with soft pad 56 between elastic die 55 and the inner wall that corresponds through-hole 54, and soft pad 56 and the inner wall fixed connection who corresponds through-hole 54, the both sides of elastic die 55 are equipped with magnetism ring 57 and a plurality of magnetism piece 58, the position department that corresponds a plurality of magnetism piece 58 in the magnetism ring 57 rotates through the bearing and is equipped with threaded rod 59, threaded rod 59 runs through elastic die 55 and extends to in the magnetism piece 58 that corresponds, and threaded rod 59 and the magnetism piece 58 threaded connection that corresponds. In the process of air flowing in the fixed cylinder 31, air in the storage tank 6 is pumped into the fixed cylinder 31 through the guide pipe 52 under the action of negative pressure, the filter plate 51 supplements air to form stable air flow, the guide pipe 52 is sealed by the sealing plate 53 matched with the elastic die 55, the air in the fixed cylinder 31 is prevented from flowing into the storage tank 6, the magnetic ring 57 is matched, and the magnetic blocks 58 are matched with the threaded rod 59 to carry out the installation and fixing of the elastic die 55, so that the elastic die 55 can be replaced.

A chute 510 is formed in the position of the sealing plate 53 corresponding to the plurality of magnetic blocks 58, a round rod 511 penetrates through the chute 510 in a sliding manner, one end of the round rod 511, which is located outside the corresponding chute 510, is fixedly connected with the corresponding magnetic block 58, a spring 512 is arranged between the round rod 511 and the inner wall of the corresponding chute 510, and two ends of the spring 512 are fixedly connected with the corresponding round rod 511 and the inner wall of the corresponding chute 510 respectively. The distance between the elastic die 55 and the closing plate 53 can be expanded by the cooperation of the round rod 511 and the spring 512, so as to expand the air outlet amount of the conduit 52.

In the process of using the lithium battery 2, because the heat generated by the charging and discharging of the lithium battery 2 under the action of the heat insulation plate 4 is greatly weakened, only a small amount of heat conduction circuit board 7 can be generated, when the heat dissipation assembly 3 operates, the air in the storage tank 6 is discharged through the air guide assembly 5, and the heat on the circuit board 7 can be taken away through the air flowing in the storage tank 6.

The implementation principle of the above embodiment is as follows: in the process of using the lithium battery 2, the heat produced when the lithium battery 2 is charged and discharged can be greatly weakened due to the action of the heat insulation plate 4, only a small amount of heat is conducted on the circuit board 7, in the use process of the lithium battery 2, due to the operation of the fan 33, the air in the shell 1 is extracted out through the fixed cylinder 31, the dust in the air is filtered out through the filter block 32 and the filter screen 34, stable airflow is formed, the air passes through the hole of the fixed frame 9 and flows on the peripheral side of the lithium battery 2, the heat on the lithium battery 2 is taken away, in the process of air flowing in the fixed cylinder 31, the air in the storage tank 6 is sucked into the fixed cylinder 31 through the guide pipe 52 due to the action of negative pressure, and the air is supplemented at the filter plate 51, stable airflow is formed, and the heat on the circuit board 7 is taken away.

When the flow rate of the air flow in the fixed cylinder 31 is too high, the circular rod 511 slides in the slide groove 510, thereby expanding the distance between the elastic mold 55 and the closing plate 53 and expanding the amount of the air discharged from the duct 52.

When the air in the fixed cylinder 31 flows into the duct 52, the elastic mold 55 is pressed against the soft cushion 56 by the gas to seal the duct 52.

After the elastic mold 55 is damaged, the heat insulation plate 4 is removed from the opening of the housing 1, the guide tube 52 is drawn out from the fixed cylinder 31, then the threaded rod 59 is rotated to unscrew the threaded rod 59 from the magnetic block 58, the elastic mold 55 is taken out from the guide tube 52 and replaced with a new elastic mold 55, then the magnetic ring 57 is inserted into the guide tube 52, the magnetic block 58 is attached to the magnetic ring 57 due to the mutual attraction of the magnetic ring 57 and the magnetic blocks 58, and the threaded rod 59 is screwed into the magnetic block 58 to complete the installation of the elastic mold 55.

The embodiment of this embodiment is the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a lithium cell group charge-discharge protection board, includes shell (1) and a plurality of lithium cell (2), its characterized in that: it is a plurality of lithium cell (2) all are located shell (1), be equipped with radiator unit (3) in the conch wall of shell (1), the open position department of shell (1) is through bolt fixedly connected with heat insulating board (4), reserve tank (6) have been seted up in heat insulating board (4), fixed circuit board (7) of having installed on the inner wall of reserve tank (6), fixed wearing to be equipped with on the periphery wall of heat insulating board (4) connects (8), and is connected through a plurality of connecting wires between connecting (8) and circuit board (7), be equipped with air guide subassembly (5) in heat insulating board (4).

2. The lithium battery pack charge and discharge protection plate according to claim 1, wherein: a plurality of through mount (9) fixed connection between lithium cell (2), and mount (9) are cellular setting, through a plurality of connecting rods (10) fixed connection between the inner wall of mount (9) and shell (1).

3. The lithium battery pack charge and discharge protection plate according to claim 1, wherein: radiator unit (3) are including solid fixed cylinder (31), solid fixed cylinder (31) are fixed wears to locate one side of shell (1), a plurality of filter blocks (32) are fixed to be equipped with through the opposite side of shell (1), fan (33) have been installed through the bracing piece in solid fixed cylinder (31), gu fixedly connected with filter screen (34) in the opening of solid fixed cylinder (31).

4. The lithium battery pack charge and discharge protection plate according to claim 1, wherein: the air guide assembly (5) comprises a plurality of guide pipes (52) and a filter plate (51), the filter plate (51) is fixedly arranged in the heat insulation plate (4) in a penetrating mode, one end, located in the heat insulation plate (4), of the filter plate (51) extends into the storage tank (6), and the storage tank (6) is communicated with the inside of the fixing barrel (31) through the plurality of guide pipes (52).

5. The protection plate for charging and discharging of a lithium battery pack according to claim 4, wherein: a sealing plate (53) is fixedly connected in the conduit (52), a through hole (54) is formed in the center of the sealing plate (53), an elastic die (55) penetrates through the through hole (54), a soft pad (56) is arranged between the elastic die (55) and the inner wall of the corresponding through hole (54), and the soft pad (56) is fixedly connected with the inner wall of the corresponding through hole (54).

6. The protection plate for charging and discharging of a lithium battery pack according to claim 5, wherein: the two sides of the elastic die (55) are provided with a magnetic ring (57) and a plurality of magnetic blocks (58), threaded rods (59) are arranged at positions corresponding to the magnetic blocks (58) in the magnetic ring (57) in a penetrating mode through rotation of bearings, the threaded rods (59) penetrate through the elastic die (55) and extend into the corresponding magnetic blocks (58), and the threaded rods (59) are in threaded connection with the corresponding magnetic blocks (58).

7. The lithium battery pack charge and discharge protection plate according to claim 6, wherein: spout (510) have been seted up to the position department that corresponds a plurality of magnetic blocks (58) in shrouding (53), slide in spout (510) and wear to be equipped with round bar (511), and round bar (511) are located corresponding spout (510) outer one end and corresponding magnetic block (58) fixed connection, round bar (511) and corresponding are equipped with spring (512) between the inner wall of spout (510), and the both ends of spring (512) respectively with round bar (511) that correspond and the inner wall fixed connection that corresponds spout (510).