CN113314775A - Vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box - Google Patents

Vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box Download PDF

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Publication number
CN113314775A
CN113314775A CN202110725071.8A CN202110725071A CN113314775A CN 113314775 A CN113314775 A CN 113314775A CN 202110725071 A CN202110725071 A CN 202110725071A CN 113314775 A CN113314775 A CN 113314775A
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CN
China
Prior art keywords
proof
explosion
box
lithium ion
box body
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Pending
Application number
CN202110725071.8A
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Chinese (zh)
Inventor
张飞鹏
骆志伟
范世军
李鹏飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Changhong Battery Co ltd
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Sichuan Changhong Battery Co ltd
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Publication date
Application filed by Sichuan Changhong Battery Co ltd filed Critical Sichuan Changhong Battery Co ltd
Priority to CN202110725071.8A priority Critical patent/CN113314775A/en
Publication of CN113314775A publication Critical patent/CN113314775A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/52Removing gases inside the secondary cell, e.g. by absorption
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271Lids or covers for the racks or secondary casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30Arrangements for facilitating escape of gases
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30Arrangements for facilitating escape of gases
    • H01M50/342Non-re-sealable arrangements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30Arrangements for facilitating escape of gases
    • H01M50/394Gas-pervious parts or elements
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The invention discloses a vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box, belongs to the technical field of lithium ion storage battery boxes, and provides a vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box capable of ensuring moisture-proof, waterproof and explosion-proof performances of the storage battery box, which comprises: the lithium ion battery drying box comprises a box body, wherein a lithium ion battery installation area is arranged in the box body, the lithium ion battery drying box further comprises an explosion-proof valve, a drying agent box and a drying agent, the explosion-proof valve is installed on the box body, the drying agent box is installed in the box body, air holes are formed in the drying agent box, and the drying agent is placed in the drying agent box. The combination of the drying agent and the explosion-proof valve ensures the moisture-proof, waterproof and explosion-proof performances of the storage battery box; and then guarantee that the inside of battery box can not moist condensation under the humid environment, still can reduce the equipment sealed requirement of quick-witted case when guaranteeing the insulating nature and the security of battery box, improve the life of quick-witted case seal part.

Description

Vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box
Technical Field
The invention relates to the technical field of lithium ion storage battery boxes, in particular to a vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box.
Background
In order to improve the cruising ability of an electric vehicle, the storage battery in the field of vehicles develops towards a high-voltage and high-capacity mode at present, and the insulation performance of a storage battery box is required to be synchronously improved when the voltage is improved; the capacity increase requires a synchronous increase in the safety of the battery box. Generally, in order to ensure the moisture-proof effect inside the storage battery box, the storage battery box is generally set to be a sealed space structure for installing the lithium ion storage battery, but the expansion caused by heat and the contraction caused by cold are inevitable in the normal use process of the battery; and internal high pressure condition, serious even battery explosion condition easily occur when the battery breaks down.
Conventionally, in order to avoid explosion of a battery case when a failure occurs, an explosion-proof valve structure is generally mounted on the battery case. However, the conventional explosion-proof valve generally only has an explosion-proof pressure relief effect, and in the normal use process of the battery, due to the expansion with heat and contraction with cold effects of the inner space, air, moisture and the like outside the box body easily enter the box body through the joint which is not sealed tightly enough on the box body, the installation position of the explosion-proof valve and the like, so that the waterproof performance of the storage battery box is poor, and the use safety of the storage battery box is seriously threatened. Therefore, in order to meet the requirements of the insulation performance and the safety of the lithium ion battery box for the vehicle, control the weight, improve the environmental adaptability of the system, ensure that the insulation performance of the lithium ion battery box is not reduced in a humid environment, and improve the safety of the lithium ion battery box in a failure mode, the method is urgent.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a vehicle-mounted moisture-proof and explosion-proof lithium ion storage battery box which can ensure the moisture-proof, water-proof and explosion-proof performances of the storage battery box.
The technical scheme adopted by the invention for solving the technical problems is as follows: on-vehicle dampproofing explosion-proof lithium ion battery case includes: the lithium ion battery drying box comprises a box body, wherein a lithium ion battery installation area is arranged in the box body, the lithium ion battery drying box further comprises an explosion-proof valve, a drying agent box and a drying agent, the explosion-proof valve is installed on the box body, the drying agent box is installed in the box body, air holes are formed in the drying agent box, and the drying agent is placed in the drying agent box.
Further, the method comprises the following steps: the box body comprises a rear panel, and the explosion-proof valve is arranged on the rear panel.
Further, the method comprises the following steps: the box body comprises a front panel, and the drying agent box is installed on the front panel.
Further, the method comprises the following steps: the desiccant box includes interior plate and outer cover plate, has seted up the through-hole on the front panel of box, encloses to close by through-hole, interior plate and outer cover plate and forms the chamber of placing that holds the desiccant, and the interior plate is installed on the surface of front panel towards the box inboard to be provided with a plurality of bleeder vents on the interior plate, the outer cover plate is installed on the surface of front panel towards the box outside, and the outer cover plate is sealed to cover for detachably and establishes on the front panel.
Further, the method comprises the following steps: the outer cover plate is mounted on the front panel through screws, and a sealing strip is arranged between the front panel and the outer cover plate.
Further, the method comprises the following steps: the sealing strip is made of silicon rubber.
Further, the method comprises the following steps: the box body is formed by adopting an aluminum alloy die-casting mode.
Further, the method comprises the following steps: the desiccant is calcium chloride desiccant.
Further, the method comprises the following steps: the explosion-proof valve is a waterproof and breathable explosion-proof valve and comprises a waterproof and breathable film and a piston body, and when the internal pressure of the box body is smaller than a set explosion value of the explosion-proof valve, the explosion-proof valve is in a normal working state; when the pressure intensity in the box body is greater than or equal to the set explosion value of the explosion-proof valve, the explosion-proof valve is in an explosion-proof working state;
under the normal working state: the piston body is at a first working position, and at the moment, when pressure difference exists between the inside and the outside of the box body, gas can only adjust the air pressure balance between the inside and the outside of the box body at a relatively small flow speed through the waterproof breathable film;
under the explosion-proof operating condition: the piston body is jacked to a second working position by the pressure in the box body, and at the moment, the gas can be decompressed in the box body at a relatively large flow rate through the barrier-free channel.
Further, the method comprises the following steps: the explosion-proof valve is a waterproof breathable explosion-proof valve produced by Dongguan cattail micro waterproof breathable film material Co.
The invention has the beneficial effects that: the invention adopts the combination scheme of the drying agent and the explosion-proof valve, thereby ensuring the moisture-proof, waterproof and explosion-proof performances of the storage battery box; and then guarantee that the inside of battery box can not moist condensation under the humid environment, still can reduce the equipment sealed requirement of quick-witted case when guaranteeing the insulating nature and the security of battery box, improve the life of quick-witted case seal part. The explosion-proof valve has a releasing function, prevents the explosion of the box body cavity and reduces the threat of the storage battery to the outside in a failure mode. Moreover, due to the drying agent, the explosion-proof valve can adopt the explosion-proof valve with the waterproof and breathable functions, so that the automatic balance of the air pressure inside and outside the storage battery box can be realized, the influence of expansion caused by heat and contraction caused by cold of the gas inside the box body in the normal use process of the storage battery is further reduced, and the service life of the storage battery is further prolonged. In addition, after the structure such as the outer cover plate is arranged, the drying agent can be directly disassembled and replaced from the outside of the storage battery box, so that the drying agent in the storage battery box can be replaced regularly and conveniently, and the long-term and continuous drying effect in the storage battery box is ensured.
Drawings
FIG. 1 is a schematic perspective view showing the orientation of a rear panel of a vehicle-mounted moisture-proof explosion-proof lithium ion battery box according to the present invention;
FIG. 2 is a schematic perspective view showing the orientation of a front panel of the vehicle-mounted moisture-proof explosion-proof lithium ion battery box according to the present invention;
FIG. 3 is a front view of a front panel of the vehicle-mounted moisture-proof explosion-proof lithium ion battery box according to the invention;
FIG. 4 is a cross-sectional view of section A-A of FIG. 3;
FIG. 5 is an enlarged view of a portion B of FIG. 4;
FIG. 6 is a schematic view of the explosion-proof valve in a normal operating condition;
FIG. 7 is a schematic view of the explosion-proof valve in an explosion-proof operating state;
labeled as: the device comprises a box body 1, a rear panel 11, a front panel 12, an explosion-proof valve 2, a drying agent box 3, a drying agent 4, air holes 5, through holes 6, an inner side plate 7, an outer cover plate 8, a sealing strip 9, a waterproof breathable film 21, a piston body 22 and an obstacle-free channel 23.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
It should be noted that, if there are directional indication terms, such as the terms of direction and orientation, above, below, left, right, front and back, in the present invention, for facilitating the description of the relative positional relationship between the components, the absolute position that is not the positional relationship between the related components and the components is specifically referred to, and is only used for explaining the relative positional relationship and the motion situation between the components in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly. When the present invention relates to a number, such as "a plurality", "several", etc., two or more than two are specifically referred to.
As shown in fig. 1 to 5, the vehicle-mounted moisture-proof explosion-proof lithium ion battery box of the present invention includes: the lithium ion battery drying box comprises a box body 1, a lithium ion battery installation area is arranged in the box body 1, the lithium ion battery drying box further comprises an explosion-proof valve 2, a drying agent box 3 and a drying agent 4, the explosion-proof valve 2 is installed on the box body 1, the drying agent box 3 is installed in the box body 1, air holes 5 are formed in the drying agent box 3, and the drying agent 4 is placed in the drying agent box 3.
The invention adopts the combination scheme of the drying agent 4 and the explosion-proof valve 2, thereby ensuring the moisture-proof, waterproof and explosion-proof performances of the storage battery box; and then guarantee that the inside of battery box can not moist condensation under the humid environment, still can reduce the equipment sealed requirement of quick-witted case when guaranteeing the insulating nature and the security of battery box, improve the life of quick-witted case seal part. The explosion-proof valve 2 is a valve body with a releasing function, so that the explosion of the box body cavity is prevented, and the threat of the storage battery to the outside in a failure mode is reduced.
More specifically, the tank body 1 comprises a back panel 11, and the explosion-proof valve 2 can be arranged on the back panel 11; mounted as shown in the positions shown in figures 1 and 4.
More specifically, the cabinet 1 includes a front panel 12, and the drying agent box 3 may be mounted on the front panel 12 in the present invention; mounted as shown in the positions shown in figures 2 and 4.
More specifically, considering that the water absorbing capacity of the desiccant 4 is limited, the drying performance of the desiccant 4 may be greatly reduced after the desiccant 4 in the battery case is used for a certain period of time, for example, after 3 months or half a year. Therefore, in order to facilitate the disassembly and replacement of the water desiccant 4, referring to the attached drawings, the invention further provides that the desiccant box 3 comprises an inner side plate 7 and an outer cover plate 8, the front panel 12 of the box body 1 is provided with a through hole 6, and a placing cavity for accommodating the desiccant 4 is formed by the through hole 6, the inner side plate 7 and the outer cover plate 8 in a surrounding manner, namely, the desiccant box 3 is actually replaced by a structure formed by the through hole 6, the inner side plate 7 and the outer cover plate 8 in a surrounding manner; at the moment, the inner side plate 7 is arranged on the surface of the front panel 12 facing the inner side of the box body 1, a plurality of vent holes 5 are formed in the inner side plate 7, the outer cover plate 8 is arranged on the surface of the front panel 12 facing the outer side of the box body 1, and the outer cover plate 8 is detachably sealed and arranged on the front panel 12; wherein the inner side plate 7 can also be directly formed by integrally stamping the front panel 12 to form a recessed structure.
More specifically, the outer cover plate 8 of the present invention can be mounted on the front panel 12 by screws, which makes the assembly and disassembly very convenient. Meanwhile, in order to secure the sealing performance of the installation of the outer cover plate 8, a sealing tape 9 may be provided between the front panel 12 and the outer cover plate 8. The sealing strip 9 can be made of silicon rubber, and has the characteristics of good sealing performance, excellent ageing resistance and no toxicity.
More specifically, the drying agent 4 in the invention can preferably adopt a calcium chloride drying agent, has the advantages of high moisture absorption rate, stable moisture absorption performance, long moisture absorption duration and the like, and very meets the development requirements of the field of the current lithium ion storage battery box for the vehicle.
More specifically, the box body 1 can be formed by aluminum alloy die-casting, and has the characteristics of high production efficiency, high metal utilization rate, high strength and surface hardness and good sealing performance. Of course, without loss of generality, the box body 1 is generally a sealed box body structure assembled by a cavity with a bottom panel and peripheral side panels and an upper cover plate covering the upper surface of the cavity, and the box body 1 should be provided with corresponding basic mounting structures such as a sealing strip mounting groove and a mounting hole, and the like, for the sealing mounting of the upper cover plate and for the sealing mounting of other parts.
More specifically, the explosion-proof valve 2 of the present invention may preferably be a waterproof and air-permeable explosion-proof valve, i.e. an explosion-proof valve of the type having a certain waterproof and air-permeable performance, i.e. a certain air-permeable capacity in the normal operating state of the explosion-proof valve 2, so as to balance the air pressure inside and outside the battery box; therefore, the automatic balance of the air pressure inside and outside the storage battery box can be realized, the influence of expansion with heat and contraction with cold on the gas inside the box body caused in the normal use process of the storage battery is further reduced, and the service life of the storage battery is further prolonged.
Specifically, referring to fig. 6 and 7, the waterproof and breathable explosion-proof valve generally comprises a waterproof and breathable membrane 21, a piston body 22, a corresponding mounting seat and the like, and when the internal pressure of the tank 1 is smaller than the set explosion value of the explosion-proof valve 2, the explosion-proof valve 2 is in a normal working state; when the pressure intensity in the box body 1 is greater than or equal to the set explosion value of the explosion-proof valve, the explosion-proof valve 2 is in an explosion-proof working state; under the normal working state: the piston body 22 is in a first working position, such as the position shown in fig. 6, when there is a pressure difference between the inside and the outside of the case 1, the gas can only adjust the balance of the gas pressure inside and outside the case 1 at a relatively small flow rate through the waterproof breathable film 21; and under the explosion-proof operating condition: the piston body 22 is pushed open by the pressure in the tank 1 to a second working position, as shown in fig. 7, in which the gas will be vented from the inside of the tank 1 through the unobstructed passage 23 at a relatively high flow rate, thereby achieving the purpose of explosion protection.
Certainly, the drying agent 4 arranged in the box body 1 can dry the interior of the box body 1, so that a relatively small amount of water vapor can enter the box body 1 in the normal use process, the assembly sealing performance requirement on the box body 1 can be reduced, the processing precision requirement of a product is further reduced, and the cost is saved. And through further adopting waterproof ventilative type explosion-proof valve, can realize the function of box 1 automatic balance internal and external differential pressure, and then reduce the influence of expend with heat and contract with cold in the normal use of battery box.
More specifically, as for the waterproof breathable explosion-proof valve, a mature product is available on the market, such as a waterproof breathable explosion-proof valve manufactured by Pupu waterproof breathable film materials Co.Ltd, which is a related product of the type, such as PBA4K-50-7S, of the Pupu waterproof breathable film materials Co.Ltd, can be used in the invention.

Claims (10)

1. On-vehicle dampproofing explosion-proof lithium ion battery case includes: box (1), be lithium ion battery installation area in box (1), its characterized in that: the drying device is characterized by further comprising an explosion-proof valve (2), a drying agent box (3) and a drying agent (4), wherein the explosion-proof valve (2) is installed on the box body (1), the drying agent box (3) is installed in the box body (1), air holes (5) are formed in the drying agent box (3), and the drying agent (4) is placed in the drying agent box (3).
2. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 1, characterized in that: the box body (1) comprises a rear panel (11), and the explosion-proof valve (2) is installed on the rear panel (11).
3. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 1, characterized in that: the box body (1) comprises a front panel (12), and the drying agent box (3) is installed on the front panel (12).
4. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 3, characterized in that: the desiccant box (3) comprises an inner side plate (7) and an outer cover plate (8), a through hole (6) is formed in a front panel (12) of the box body (1), the inner side plate (7) and the outer cover plate (8) enclose a placing cavity for containing the desiccant (4), the inner side plate (7) is installed on the surface of the front panel (12) facing the inner side of the box body (1), a plurality of air holes (5) are formed in the inner side plate (7), the outer cover plate (8) is installed on the surface of the front panel (12) facing the outer side of the box body (1), and the outer cover plate (8) is detachably sealed and arranged on the front panel (12).
5. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 4, characterized in that: the outer cover plate (8) is mounted on the front panel (12) by screws, and a weather strip (9) is provided between the front panel (12) and the outer cover plate (8).
6. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 5, characterized in that: the sealing strip (9) is made of silicon rubber.
7. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 1, characterized in that: the box body (1) is formed by adopting an aluminum alloy die-casting mode.
8. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 1, characterized in that: the drying agent (4) is a calcium chloride drying agent.
9. The vehicle-mounted moisture-proof explosion-proof lithium ion battery box according to any one of claims 1 to 8, characterized in that: the explosion-proof valve (2) is a waterproof and breathable explosion-proof valve and comprises a waterproof breathable film (21) and a piston body (22), and when the internal pressure of the box body (1) is smaller than a set explosion value of the explosion-proof valve (2), the explosion-proof valve (2) is in a normal working state; when the pressure inside the box body (1) is greater than or equal to the set explosion value of the explosion-proof valve, the explosion-proof valve (2) is in an explosion-proof working state;
under the normal working state: the piston body (22) is at a first working position, and when pressure difference exists between the inside and the outside of the box body (1), gas can only carry out adjustment on the balance of the air pressure inside and outside the box body (1) at a relatively small flow rate through the waterproof breathable film (21);
under the explosion-proof operating condition: the piston body (22) is pushed open by the pressure in the box body (1) to a second working position, and the gas can perform pressure relief in the box body (1) at a relatively large flow rate through the barrier-free passage (23).
10. The vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box according to claim 8, characterized in that: the explosion-proof valve (2) is a waterproof breathable explosion-proof valve produced by Dongguan cattail micro waterproof breathable film material limited company.
CN202110725071.8A 2021-06-29 2021-06-29 Vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box Pending CN113314775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110725071.8A CN113314775A (en) 2021-06-29 2021-06-29 Vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110725071.8A CN113314775A (en) 2021-06-29 2021-06-29 Vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box

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Publication Number Publication Date
CN113314775A true CN113314775A (en) 2021-08-27

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Application Number Title Priority Date Filing Date
CN202110725071.8A Pending CN113314775A (en) 2021-06-29 2021-06-29 Vehicle-mounted moisture-proof explosion-proof lithium ion storage battery box

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023214066A1 (en) * 2022-05-06 2023-11-09 Bontaz Centre Safety valve for a battery housing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023214066A1 (en) * 2022-05-06 2023-11-09 Bontaz Centre Safety valve for a battery housing
FR3135308A1 (en) * 2022-05-06 2023-11-10 Bontaz Centre R & D SAFETY VALVE FOR BATTERY ENCLOSURE

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