CN107634162B - Battery package box structure of leak protection liquid - Google Patents
Battery package box structure of leak protection liquid Download PDFInfo
- Publication number
- CN107634162B CN107634162B CN201710813998.0A CN201710813998A CN107634162B CN 107634162 B CN107634162 B CN 107634162B CN 201710813998 A CN201710813998 A CN 201710813998A CN 107634162 B CN107634162 B CN 107634162B
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- battery
- battery box
- way valve
- thermal management
- battery pack
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- 239000007788 liquid Substances 0.000 title claims description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 9
- 229920002472 Starch Polymers 0.000 claims description 8
- 235000019698 starch Nutrition 0.000 claims description 8
- 239000008107 starch Substances 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 description 78
- 238000007789 sealing Methods 0.000 description 23
- 230000000149 penetrating effect Effects 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
A leakage-proof battery pack case structure, comprising: the battery box body, battery box upper cover, battery module, thermal management subassembly and check valve, battery box upper cover lid closes in the battery box body, battery box body and battery box upper cover form the cavity, the battery box body includes a plurality of module fixed beams, a plurality of module fixed beam intervals set up in the battery box body, adjacent module fixed beam forms thermal management subassembly standing groove, thermal management subassembly installs in thermal management subassembly standing groove, battery module installs in the module fixed beam, the check valve is installed in the surface of battery box body. The invention can well prevent the occurrence of the internal leakage condition of the battery module and perform thermal management on the battery module, and can protect the battery module and exert the maximum performance of the battery module.
Description
Technical Field
The invention relates to the field of battery pack boxes, in particular to a leakage-proof battery pack box structure.
Background
In recent years, electric automobiles are valued and supported by the government because of the characteristics of small pollution to the atmospheric environment and diversified energy sources, and are developed more and more rapidly. Currently, governments and businesses are increasingly invested in research and development, and related policies and regulations are enacted to promote the development of electric vehicles. The heat-related problem of the new energy battery system is one of the key factors determining its use performance, safety, life span, etc. Only the problems are completely solved, and the popularization of new energy automobiles is still realized.
When the temperature of the battery module is low, the available capacity of the battery module will decay rapidly, and when the temperature of the battery module is lower than 0 ℃, the battery module is charged, so that the instant voltage overcharge phenomenon of the battery module may be caused, and the internal short circuit of the battery module is caused. Secondly, the defects of the battery module in the links of production, manufacture and the like or improper use and the like can cause the local excessive heating of the battery module, further cause chain exothermic reaction, finally cause serious thermal runaway accidents such as fire and explosion and the like, and threaten the safety of personnel life and property. In order to solve the above problems, the battery module system is provided with a special liquid cooling device to solve the problem of thermal management of the battery module system. However, the problems are also exposed, and once the liquid leakage occurs in the liquid cooling device of the battery module system, serious accidents are also caused. Moreover, if the liquid is in the battery module box for a long time, the battery module in the box and the components related to the battery module are in a very dangerous environment, once a short-circuit accident occurs, the consequences are inconceivable, the battery module system is burnt out if the liquid is light, the fire and explosion are serious, and even the vehicle is destroyed and the lives and properties of users are seriously threatened.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a leakage-proof battery pack box structure.
The aim of the invention is realized by the following technical scheme:
a leakage-proof battery pack case structure, comprising: the battery box comprises a battery box body, a battery box upper cover, a battery module, a thermal management assembly and a check valve, wherein the battery box body is covered by the battery box upper cover, the battery box upper cover and the battery box upper cover form a hollow cavity, the battery box body comprises a plurality of module fixing beams, the plurality of module fixing beams are arranged at intervals on the battery box body, the adjacent module fixing beams form thermal management assembly placing grooves, the thermal management assembly is arranged in the thermal management assembly placing grooves, the battery module is arranged in the module fixing beams, and the check valve is arranged on the surface of the battery box body.
In one embodiment, the battery box further comprises a sealing ring, and the sealing ring is arranged between the battery box main body and the battery box upper cover.
In one embodiment, the seal ring is a rubber seal ring.
In one embodiment, the battery management unit is mounted to the hollow cavity.
In one embodiment, the device further comprises a high-pressure unit, wherein the high-pressure unit is installed in the hollow cavity.
In one embodiment, the battery box further comprises a manual maintenance switch, wherein the manual maintenance switch is mounted on the upper cover of the battery box.
In one embodiment, the battery box further comprises a high-voltage plug-in unit, wherein the high-voltage plug-in unit is mounted on the surface of the battery box body.
In one embodiment, the battery box body is provided with a hanger.
Compared with the prior art, the technical scheme has the following beneficial effects:
this technical scheme can be fine through the emergence of preventing the weeping condition of the setting of check valve, has protected the battery module effectively, minimizes the harm of weeping. In addition, the thermal management assembly realizes the thermal management of the battery module, so that the battery module can be at the most suitable working temperature, and the battery module can exert the maximum efficacy.
Drawings
Fig. 1 is an exploded view of the structure of a battery pack case for preventing leakage in the present embodiment;
fig. 2 is a schematic structural view of a battery box main body in the present embodiment;
FIG. 3 is an exploded view of the thermal management assembly of the battery pack case of the present embodiment;
FIG. 4 is a schematic view showing another use state of the thermal management assembly of the battery pack case according to the present embodiment;
fig. 5 is a schematic structural view of a check valve of the battery pack case in the present embodiment;
fig. 6 is a cross-sectional view of the check valve of the battery pack case in the present embodiment.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, which is an exploded view of a liquid-proof battery pack case structure, fig. 2, 3 and 4 are combined together, and the liquid-proof battery pack case structure comprises: the battery box comprises a battery box body 100, a battery box upper cover 200, a battery module 300, a thermal management assembly 400 and a check valve 500, wherein the battery box upper cover 200 covers the battery box body 100, the battery box body 100 and the battery box upper cover 200 form a hollow cavity, the battery box body 100 comprises a plurality of module fixing beams 110, the module fixing beams 110 are arranged at intervals on the battery box body 100, a thermal management assembly placing groove 120 is formed by adjacent module fixing beams 110, the thermal management assembly 400 is installed in the thermal management assembly placing groove 120, the battery module 300 is installed in the module fixing beams 110, and the check valve 500 is installed on the surface of the battery box body 100.
Specifically, the battery box further comprises a sealing ring 600, and the sealing ring 600 is arranged between the battery box main body 100 and the battery box upper cover 200.
Further, the sealing ring 600 is a foamed silica gel sealing ring.
Specifically, the battery management unit 700 is further included, and the battery management unit 700 is mounted to the hollow cavity.
Specifically, the high-voltage unit 800 is further included, and the high-voltage unit 800 is mounted to the hollow cavity.
Specifically, a manual maintenance switch 900 is further included, and the manual maintenance switch 900 is mounted to the battery box upper cover 200.
Specifically, the high-voltage plug-in unit 1000 is further included, and the high-voltage plug-in unit 1000 is mounted on the surface of the battery case body 100.
Specifically, the battery case body 100 is provided with a hanger 130.
This technical scheme can be fine through the emergence of preventing the weeping condition of the setting of check valve 500, has protected battery module 300 effectively, minimizes the harm of weeping. In addition, the thermal management assembly 400 performs thermal management of the battery module 300 such that the battery module 300 can be at an optimum operating temperature, which is the maximum efficacy of the battery module 300.
The manual maintenance switch 900 has a fuse (not shown in the drawings) built therein. When the battery module 300 is shorted, the fuse will be opened to protect the battery management unit 700 from being burned by a large current. In addition, when the battery module 300 is maintained, the manual maintenance switch 900 is pulled down, and the battery management unit 700 does not form a loop, thereby protecting a serviceman.
As shown in fig. 1 and 3, a thermal management assembly 400 of a battery pack case is described:
thermal management assembly 400 includes: the heat management system comprises a heat management pipeline 410, a first liquid cooling pipeline 420, a second liquid cooling pipeline 430, a plurality of heat management component backing plates 440 and heat conduction rubber plates 450 corresponding to the heat management component backing plates 440 one by one, wherein the heat management pipeline 410 is a hollow cavity, a first water hole 411 and a second water hole 412 are formed in the heat management pipeline 410, one end of the first liquid cooling pipeline 420 is inserted into the first water hole 411, one end of the second liquid cooling pipeline 430 is inserted into the second water hole 412, the heat management backing plates 440 are fixed at the bottom of the heat management pipeline 410, and the heat conduction rubber plates 450 are fixed at the top of the heat management pipeline 410.
Specifically, the thermal management pipe 410 includes a first main pipe 413, a second main pipe 414, and split pipes 415 corresponding to the thermal management component pads 440 one by one, the first water holes 411 are formed in the first main pipe 413, the second water holes 412 are formed in the second main pipe 414, one ends of the split pipes 415 are in through connection with the first main pipe 413, the other ends of the split pipes are in through connection with the second main pipe 414, the thermal management component pads 440 are fixed at the bottom of the split channels 415, and the heat conducting glue plates 450 are fixed at the top of the split channels 415.
Specifically, the first liquid cooling pipe 420 includes a first liquid cooling elbow 421, a first liquid cooling pipe 422, a first liquid cooling straight plug 423 and a first liquid cooling tap 424, one end of the first liquid cooling pipe 422 is connected with the first liquid cooling elbow 421 in a penetrating manner, the other end of the first liquid cooling pipe 422 is connected with the first liquid cooling straight plug 423 in a penetrating manner, the first liquid cooling tap 424 is connected with the first liquid cooling straight plug 423 in a penetrating manner, and the first liquid cooling pipe 420 is plugged into the first water hole 411 through the first liquid cooling elbow 421.
Specifically, the first liquid cooling pipe 420 further includes a first liquid cooling seal ring 425, where the first liquid cooling seal ring 425 is respectively disposed between the first liquid cooling elbow 421 and one end of the first liquid cooling pipe 422, between the other end of the first liquid cooling pipe 422 and the first liquid cooling straight plug 423, and between the first liquid cooling straight plug 424 and the first liquid cooling tap 425.
Further, the first liquid-cooled sealing ring 425 is a foamed silica gel first liquid-cooled sealing ring.
Specifically, the second liquid cooling pipe 430 includes a second liquid cooling elbow 431, a second liquid cooling pipe 432, a second liquid cooling straight plug 433 and a second liquid cooling tap 434, one end of the second liquid cooling pipe 432 is connected with the second liquid cooling elbow 431 in a penetrating manner, the other end is connected with the second liquid cooling straight plug 433 in a penetrating manner, the second liquid cooling tap 434 is connected with the second liquid cooling straight plug 433 in a penetrating manner, and the second liquid cooling pipe 430 is plugged into the second water hole 412 through the second liquid cooling elbow 431.
Specifically, the second liquid cooling pipe 430 further includes a second liquid cooling sealing ring 435, and the second liquid cooling sealing ring 434 is respectively disposed between the second liquid cooling elbow 431 and one end of the second liquid cooling pipe 432, between the other end of the second liquid cooling pipe 432 and the second liquid cooling straight plug 433, and between the second liquid cooling straight plug 433 and the second liquid cooling tap 434.
Further, the second liquid-cooled sealing ring 435 is a foamed silica gel second liquid-cooled sealing ring.
Specifically, a buffer groove 441 is formed at the bottom of the thermal management assembly pad 440.
Further, the buffer groove 441 is a "U" type buffer groove.
Further, the thermal management assembly shim plate 440 is a rubber shim plate.
Specifically, the thermal management assembly shim plate 440 has a shunt tube placement groove 442 formed on its top.
Further, the heat-conducting glue board placing groove 442 is a "U" type split-flow pipeline placing groove.
The thermal management assembly 400 operates as follows:
when the battery module 300 needs to be heated, the battery management unit 700 controls the whole vehicle liquid pump to deliver the liquid with heat to the first liquid cooling pipe 420. Because the first main flow pipeline 413, the second main flow pipeline 414, the split flow pipeline 415, the first liquid cooling pipeline 420 and the second liquid cooling pipeline 430 are hollow cavity structures, and the first main flow pipeline 413, the second main flow pipeline 414, the split flow pipeline 415, the first liquid cooling pipeline 420 and the second liquid cooling pipeline 430 are mutually communicated. The direction of flow of the liquid pumped by the liquid pump is the first liquid cooling pipe 420, the first main flow pipe 413, the split flow pipe 415, the second main flow pipe 414 and the second liquid cooling pipe 430. Because the heat conduction rubber plate 450 is installed at the top of the shunt pipeline 415, and the heat conduction rubber plate 450 is attached to the surface of the battery module 300, the heat of the liquid conveyed in the shunt pipeline 415 is conducted to the heat conduction rubber plate 450, and the heat conduction rubber plate 450 exchanges heat with the battery module 300, so that the battery module 300 is heated. It is particularly emphasized that when the battery module 300 needs to be cooled, the battery management unit 700 controls the whole vehicle liquid pump to deliver the liquid with the cooling capacity to the first liquid cooling pipe 420. Since the working principle and the working process of cooling the battery module 300 are consistent with those of heating the battery module 300, the difference is that the liquid pump delivers hot liquid or cold liquid, and the cooling process of the battery module 300 is not elaborated.
It should be noted that, the bottom of the thermal management component pad 440 is provided with a "U" type buffer groove 441, and the buffer groove 441 is designed to play a role in buffering, so as to protect the thermal management component pad 440 from the impact of external force.
It should be further noted that, the top of the thermal management assembly pad 440 is provided with the shunt pipe placement groove 442, and the side wall of the shunt pipe placement groove 442 can well protect the shunt pipe 415 to prevent the shunt pipe 415 from being damaged by external accident factors.
In order to further improve the leakage preventing function of the battery module structure, the first liquid cooling pipe 420 and the second liquid cooling pipe 430 are provided with flow sensors (not shown in the drawings), when the flow rates of the first liquid cooling pipe 420 and the second liquid cooling pipe 430 are not equal, it is determined that leakage occurs, a signal is output to the battery management unit 700, the battery management unit 700 controls the whole vehicle liquid pump to be turned off, liquid is stopped to be conveyed, and harm of liquid leakage is minimized.
It should be noted that, in order to further improve the leakage preventing function of the battery pack case, a first liquid cooling sealing ring 425 is installed at the connection between the first liquid cooling elbow 421 and one end of the first liquid cooling pipe 422, the connection between the first liquid cooling straight plug 423 and the other end of the first liquid cooling pipe 422, and the connection between the first liquid cooling straight plug 423 and the first liquid cooling tap 424; a second liquid cooling sealing ring 435 is arranged at the joint of the second liquid cooling elbow 431 and one end of the second liquid cooling pipe 432, the other end of the second liquid cooling straight plug 433 and the second liquid cooling pipe 432 and the joint of the second liquid cooling straight plug 433 and the second liquid cooling tap 434; a gasket 600 is provided between the battery case upper cover 200 and the battery case main body 100. The first liquid-cooled sealing ring 425, the second liquid-cooled sealing ring 435 and the sealing ring 600 all improve the water resistance and air tightness of the battery module structure. In addition, the first liquid-cooled seal ring 425 and the second liquid-cooled seal ring 435 effectively prevent the leakage of the liquid delivered by the whole vehicle liquid pump.
To enhance the strength of thermal management assembly 400 and to increase the cold thermal conductivity of the thermal management tubes, thermal management assembly 400 is optimally designed for this purpose.
As shown in fig. 4, which is an exploded schematic view of the optimally designed thermal management module 400, a third main flow channel 416 is added on the basis of the original first main flow channel 413, the second main flow channel 414 and the split flow channels 415 corresponding to the thermal management module pads 440 one by one, one end of the split flow channel 415 is connected with the first main flow channel 413 in a penetrating manner, the other end is connected with the third main flow channel 416 in a penetrating manner, and the first main flow channel 413 is connected with the second main flow channel 414 in a penetrating manner. In addition, the first main flow pipe 413 and the third main flow pipe 416 are each provided with a partition plate (not identified in the drawing) that divides the first main flow pipe 413 into 5 independent chambers that are independent of each other and divides the third main flow pipe 416 into 3 independent chambers that are independent of each other. The 5 cavities of the first main flow pipe 413 in fig. 4 are respectively identified as a first main flow pipe cavity 1, a second main flow pipe cavity 2, a third main flow pipe cavity 3, a fourth main flow pipe cavity 4 and a fifth main flow pipe cavity 5; the 3 cavities of the third main flow duct 416 are identified as a sixth main flow duct cavity 6, a seventh main flow duct cavity 7 and an eighth main flow duct cavity 8, respectively. The direction of the liquid flow is: the first main flow pipe cavity 1-the split flow pipe 415-the sixth main flow pipe cavity 6-the second main flow pipe cavity 2 and the third main flow pipe cavity 3-the split flow pipe 415-the seventh main flow pipe cavity 7 and the eighth main flow pipe cavity 8-the split flow pipe 415-the fourth main flow pipe cavity 4 and the fifth main flow pipe cavity 5-the second main flow pipe 2. The first main flow pipeline 413 and the third main flow pipeline 416 are divided into a plurality of independent cavities by the arrangement of the partition plates, so that the contact area of the first main flow pipeline 413, the second main flow pipeline 414, the third main flow pipeline 416 and the diversion pipeline 415 with water is increased, and the cold heat conductivity is also increased. In addition, the provision of the partition plate also enhances the physical strength of the thermal management conduit 410 as a whole, and is not easily damaged.
It should be noted that, as a preferred embodiment, the first liquid-cooled tube 422 and the second liquid-cooled tube 432 are each provided with a bellows (not shown in the drawings). The bellows is made of soft material and can bend 360 degrees to eliminate the stress of the hard piece at the interface of the first liquid-cooled tube 422 and the second liquid-cooled tube 432. In addition, errors can be eliminated.
It is particularly emphasized that the manufacturer may flexibly set the number of thermal management assembly pads 440 and thermally conductive glue plates 450 in connection with the actual production needs. As a preferred embodiment, the number of thermal management assembly pads 440 and thermally conductive glue plates 450 corresponds to the number of shunt tubes 415.
As shown in fig. 1, 5 and 6, which are schematic structural views of a check valve 500 of a battery pack case, the check valve 500 will be described as follows:
the check valve 500 includes: the check valve comprises a check valve main body 510, a floating ball 520, a sealing ring 530 and a decomposition layer 540, wherein the check valve main body 510 comprises a check valve upper body 511 and a check valve lower body 512, the check valve upper body 511 is arranged on the check valve lower body 512 to form a hollow cavity structure, and the floating ball 520 is arranged in the hollow cavity;
the check valve upper body 511 is provided with a plurality of drain holes 513 for draining water, the drain holes 513 are in through connection with the hollow cavity, a boss 514 is arranged at the top of the check valve upper body 511, a mounting thread 515 for mounting the check valve is annularly arranged on the boss 514, a sealing ring placing groove 516 is arranged at the bottom of the mounting thread 515, and the sealing ring 530 is mounted in the sealing ring placing groove 516;
the decomposition layer 540 is mounted on top of the boss 514.
Specifically, the decomposition layer 540 includes a first starch paper 541, a fiber layer 542, and a second starch paper 543, where the first starch paper 541, the fiber layer 542, and the second starch paper 543 are stacked in order to form the decomposition layer 540.
Further, the fiber layer 542 is a mesh fiber layer.
Further, the sealing ring 530 is a soft silica gel sealing ring.
Further, the floating ball 520 is a foamed silica gel floating ball.
The specific principle of operation of the check valve 500 is as follows:
when the liquid leakage occurs, the first and second paper back-ups 541 and 543 provided in the check valve 500 start to be decomposed by being immersed in the liquid. At this time, the drain hole 513 of the check valve 500 is also highlighted, and the leaked liquid is discharged out of the battery case main body 100, thereby realizing the leakage protection. Furthermore, when the outside of the battery module case 100 is waded, the floating ball 520 provided in the check valve 500 floats up to block the drain hole 513 as the water level rises, preventing water from being poured into the battery case main body 100, and protecting the battery module 300.
In the preferred embodiment, the fiber layer 542 is a mesh fiber layer. The design of the fiber layer 542 increases the strength and stiffness of the resolution layer 540 to resist differences in internal and external pressures.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. The utility model provides a battery package box structure of leak protection liquid which characterized in that includes: the battery box comprises a battery box body, a battery box upper cover, a battery module, a thermal management assembly and a one-way valve, wherein the battery box upper cover is covered on the battery box body, the battery box body and the battery box upper cover form a hollow cavity, the battery box body comprises a plurality of module fixing beams, the plurality of module fixing beams are arranged on the battery box body at intervals, the adjacent module fixing beams form a thermal management assembly placing groove, the thermal management assembly is arranged in the thermal management assembly placing groove, the battery module is arranged on the module fixing beams, and the one-way valve is arranged on the surface of the battery box body;
the check valve includes: the one-way valve comprises a one-way valve main body, a floating ball and a decomposition layer, wherein the one-way valve main body comprises a one-way valve upper body and a one-way valve lower body, the one-way valve upper body is arranged on the one-way valve lower body to form a hollow cavity structure, and the floating ball is arranged in the hollow cavity;
the upper body of the one-way valve is provided with a plurality of drain holes for draining water, the drain holes are in through connection with the hollow cavity, the top of the upper body of the one-way valve is provided with a boss, the boss is annularly provided with mounting threads for mounting the one-way valve, and the decomposition layer is mounted on the top of the boss; the decomposing layer comprises a first starch paper, a fiber layer and a second starch paper, and the first starch paper, the fiber layer and the second starch paper are sequentially stacked to form the decomposing layer.
2. The leak resistant battery pack case structure as recited in claim 1, further comprising a gasket disposed between the battery pack main body and the battery pack upper cover.
3. The leakage proof battery pack case structure of claim 2, wherein the seal ring is a rubber seal ring.
4. The leakage proof battery pack case structure of claim 1, further comprising a battery management unit mounted to the hollow cavity.
5. The leakage proof battery pack case structure of claim 1, further comprising a high voltage unit mounted to the hollow cavity.
6. The leak resistant battery pack case structure as recited in claim 1, further comprising a manual maintenance switch mounted to the battery pack upper cover.
7. The leakage proof battery pack case structure of claim 1, further comprising a high voltage plug-in mounted to a surface of the battery pack body.
8. The leakage preventing battery pack case structure according to claim 1, wherein the battery case body is provided with a hanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813998.0A CN107634162B (en) | 2017-09-11 | 2017-09-11 | Battery package box structure of leak protection liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813998.0A CN107634162B (en) | 2017-09-11 | 2017-09-11 | Battery package box structure of leak protection liquid |
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| CN107634162A CN107634162A (en) | 2018-01-26 |
| CN107634162B true CN107634162B (en) | 2023-10-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878708A (en) * | 2018-06-21 | 2018-11-23 | 江苏英耐杰新能源有限公司 | A kind of double-layer structured lithium battery pack device |
| JP6830980B2 (en) * | 2019-05-16 | 2021-02-17 | 本田技研工業株式会社 | Cooling structure of vehicle battery unit |
| CN112599903A (en) * | 2020-12-24 | 2021-04-02 | 湖北亿纬动力有限公司 | Liquid cooling battery box and battery package |
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| CN204271163U (en) * | 2014-12-08 | 2015-04-15 | 广州汽车集团股份有限公司 | The bottom case structure of power cell of vehicle bag and electrokinetic cell bag apparatus for testing weeping |
| CN204696180U (en) * | 2015-06-29 | 2015-10-07 | 长城汽车股份有限公司 | Power brick lower house and power brick |
| CN106654445A (en) * | 2016-11-15 | 2017-05-10 | 惠州市蓝微新源技术有限公司 | Liquid-cooled battery module |
| CN207398214U (en) * | 2017-09-11 | 2018-05-22 | 惠州市蓝微新源技术有限公司 | A kind of battery pack body structure of liquid-leakage preventing |
| JP2020053387A (en) * | 2019-06-12 | 2020-04-02 | 大日本印刷株式会社 | Valve device for power storage device, and power storage device |
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| CN107634162A (en) | 2018-01-26 |
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