CN215816176U - Battery box connection structure and battery module - Google Patents
Battery box connection structure and battery module Download PDFInfo
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- CN215816176U CN215816176U CN202121550850.0U CN202121550850U CN215816176U CN 215816176 U CN215816176 U CN 215816176U CN 202121550850 U CN202121550850 U CN 202121550850U CN 215816176 U CN215816176 U CN 215816176U
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- 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
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Abstract
The utility model is suitable for the technical field of power batteries, and provides a battery box connecting structure and a battery module, wherein the battery box connecting structure comprises a box main body, a box cover, a sealing gasket and a fireproof coating, the box cover is arranged on the box main body, the sealing gasket is arranged between the box cover and the box main body, the sealing gasket comprises a spraying part and a sealing part, the spraying part covers the battery module, and the sealing part is in contact with the periphery of the box body; the fireproof coating is arranged on the spraying surface of the sealing gasket and is a thermal expansion type fireproof coating. According to the battery box connecting structure provided by the utility model, when the battery module is in a non-runaway state, the sealing gasket is attached to the box cover and the box body to form sealing, and at the moment, the fireproof coating cannot expand; when battery module takes place thermal runaway, the fire protection coating can rapid expansion foaming when exceeding the uniform temperature, and the tight case lid in top is kept apart sealed pad and flame or high temperature gas, prevents to seal up the melting deformation of being heated, has promoted the life who seals up the pad.
Description
Technical Field
The utility model belongs to the technical field of power batteries, and particularly relates to a battery box connecting structure and a battery module.
Background
With the national higher and higher requirements on the safety of power batteries, the requirements on the thermal spreading safety of battery modules are also higher and higher. Wherein the electric core assembly is generally placed in the case, thereby forming the battery module. The case of the battery module generally includes a case main body and a case cover covering the case main body.
In order to prevent fire caused by flame sprayed out of the case body when the battery module is out of control due to heat, the conventional battery module is configured to have a hermetic connection between the case body and the case cover. Part of the battery modules are connected with the flange surfaces of the box cover and the box main body by high-temperature sealant so as to realize sealing connection, but the high-temperature sealant is expensive and high in cost, so that the box cover and the box main body are inconvenient to disassemble, and the box cover is easy to scrap in the disassembling process; also some battery module can adopt the sealed pad of silica gel to realize the sealing connection between the flange face of case lid and case main part, but the sealed pad of silica gel is easily burnt out by flame and is caused flame to spout from the flange face when battery package thermal runaway, causes the conflagration easily.
SUMMERY OF THE UTILITY MODEL
An object of the embodiments of the present invention is to provide a battery box connecting structure and a battery module, so as to facilitate detachment of a box main body and a box cover and reduce a risk of flame blowout in a box.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a battery box connection structure, including case main part and the case lid of lid on locating the case main part, the case main part is used for holding and establishes electric core subassembly, battery box connection structure still includes:
the sealing gasket is arranged between the box cover and the box main body and is provided with a spraying part and a sealing part, the spraying part covers the electric core assembly in the direction vertical to the box cover, the surface of the spraying part facing the box main body is a spraying surface, the sealing part is used for contacting with the periphery of the box main body, and the surface of the sealing part facing the box main body is a sealing surface; and
and the fireproof coating is arranged on the spraying surface and is a thermal expansion type fireproof coating of a thermal expansion type fireproof coating.
Through adopting above-mentioned technical scheme, through direct spraying fireproof coating at the sealed spraying face that fills up, moreover, the steam generator is simple in operation, do not influence the dismantlement of case lid, thereby be convenient for maintain, and this fireproof coating is thermal expansion formula fireproof coating, when battery module takes place the thermal runaway, fireproof coating can the sharp expansion foaming when exceeding the uniform temperature, the tight case lid in top, and keep apart sealed pad and flame or high-temperature gas, prevent sealed pad thermal melting deformation, the life of sealed pad has been promoted, sealed pad has been guaranteed still to play sealed effect, it is external to prevent flame blowout case main part, the dismantlement is convenient, and it is external to have prevented flame blowout case main part.
Optionally, the fire retardant coating has a dry film thickness of 0.1 to 0.45 mm.
Through adopting above-mentioned technical scheme, the fire protection coating at this thickness has better flame retardant efficiency, can avoid sealed pad inefficacy promptly after this fire protection coating inflation, still can play sealed effect, prevents the flame blowout, and a plurality of film thickness undersize, the leakproofness is not good, can not play the fire prevention effect, and a plurality of film thickness are too big easily to cause the coating extravagant, raise the cost.
Optionally, the thermal expansion temperature of the fire-blocking coating is greater than or equal to 260 ℃.
Through adopting above-mentioned technical scheme, temperature when battery module takes place thermal runaway is more than 600 ℃, sets up the thermal expansion temperature of fire protection coating to be greater than or equal to 260 ℃, and when battery module takes place thermal runaway, this fire protection coating can take place thermal expansion to the protection sealed pad can not become invalid, thereby can play sealed effect.
Optionally, the expansion ratio of the fire-retardant coating is 15-20 times.
By adopting the technical scheme, when the battery module is out of control due to heat, the fireproof coating can expand rapidly to foam to 15-20 times of the original thickness when exceeding a certain temperature, the box cover can be tightly pushed to separate the sealing gasket from flame, and the fireproof effect is good.
Optionally, the fire-retardant coating is a straight piece, and the peripheral edge of the fire-retardant coating abuts against the joint of the box cover and the box main body.
Through adopting above-mentioned technical scheme, set up fire protection coating into straight piece to with the junction butt between case lid and the case main part, be convenient for operate.
Optionally, the fire-retardant coating is a bent piece, the fire-retardant coating comprising:
a body portion disposed on the spray surface; and
the extension part is bent and extended from the peripheral edge of the body part towards the box main body, and covers the inner wall of the box main body.
Through adopting above-mentioned technical scheme, set up the fire protection coating into the piece of buckling, this fire protection coating's this somatic part can protect sealed the pad, and this fire protection coating's extension can protect the case main part.
Optionally, the spraying part and the sealing part are of an integrally molded structure.
Through adopting above-mentioned technical scheme, set up spraying portion and sealing into an organic whole shaping structure, can guarantee the stability that spraying portion and sealing are connected, processing is more convenient.
Optionally, the box body comprises:
the shell part is internally provided with an accommodating space for accommodating the capacitor assembly; and
the bending part is bent from the edge of the shell part towards the direction departing from the shell part, the surface of the bending part facing the box cover is a flange surface, and the bending part is fixedly connected with the shell part; the sealing gasket is attached to the flange surface, and the bending part, the sealing gasket and the box cover are detachably connected through the connecting piece.
Through adopting above-mentioned technical scheme, set up the kink into the flange face towards the surface of case lid, the flange face mainly is used in high temperature, highly compressed environment, can guarantee the leakproofness, avoids flame from the blowout of flange face, sets up kink, sealed pad and case lid into dismantling the connection, and convenient to detach case lid is changed.
Optionally, sealed the laminating of filling up with the flange face, battery box connection structure still includes:
the connecting piece, the connecting piece passes kink, sealed pad in proper order and can dismantle with the case lid and be connected.
By adopting the technical scheme, the sealing gasket is extruded by the connecting piece, so that the sealing performance of the box cover and the box main body is ensured.
Optionally, the connecting member is a bolt, and threaded holes for the bolt to pass through are respectively formed in the bending portion, the sealing gasket and the box cover.
Through adopting above-mentioned technical scheme, pass the screw hole on the kink, the screw hole on the sealed pad and the screw hole on the case lid in proper order through the bolt to realize the connection of dismantling between case lid, sealed pad and the case lid, thereby be convenient for change the case lid.
The utility model also provides a battery module, which comprises the electric core component and the battery box connecting structure, wherein the electric core component is arranged in the box main body.
Through adopting above-mentioned technical scheme, through adopting foretell battery box connection structure, through direct spraying fire protection coating at the sealed spraying face that fills up, and easy operation, do not influence the dismantlement of case lid, thereby be convenient for maintain, and this fire protection coating is thermal expansion formula fire protection coating, when battery module takes place the thermal runaway, fire protection coating can the foaming of sharp expansion when surpassing the uniform temperature, the tight case lid in top, and keep apart sealed pad and flame or high-temperature gas, prevent that sealed pad from being heated to melt and warping, the life of sealed pad has been promoted, it still can play the sealing effect to have guaranteed to seal up, it is external to prevent the flame blowout case main part, it is convenient to dismantle, and prevented outside the flame blowout case main part.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic front view of a battery box connection structure according to an embodiment of the present invention;
FIG. 2 is a first schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is a partially enlarged view of portion A of FIG. 2;
FIG. 4 is a second schematic sectional view taken along line A-A of FIG. 1;
FIG. 5 is a partially enlarged view of the portion B in FIG. 4;
fig. 6 is a schematic perspective view of a box body according to an embodiment of the present invention;
fig. 7 is a schematic perspective view of a box body according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1-a box main body; 11-a housing portion; 12-a bending part;
2-box cover;
3-a sealing gasket; 31-a spraying part; 311-spray coating surface; 32-a seal; 321-a sealing surface;
4-fireproof coating; 41-a body portion; 42-an extension;
5-connecting piece.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Referring to fig. 1 to fig. 3, a battery box connection structure according to an embodiment of the present invention will be described. The battery box connecting structure includes a box main body 1, a box cover 2, and a gasket 3. The inside cavity of case main part 1 is used for holding and establishes the electric core subassembly, case lid 2 lid is located on case main part 1, sealed 3 sets up between case lid 2 and case main part 1, be used for sealing the junction between case lid 2 and the case main part 1, this sealed 3 includes spraying portion 31 and sealing 32, wherein, in the direction of perpendicular to case lid 2, spraying portion 31 covers the electric core subassembly, the surface towards case main part 1 of this spraying portion 31 is spraying face 311, sealing 32 encloses the periphery of locating spraying portion 31, and this sealing 32 sets up between case main part 1 and case lid 2, the surface towards case main part 1 of sealing 32 is sealed face 321. Because the sealing gasket 3 is generally a silica gel sealing gasket 3, the use temperature is generally below 200 ℃, and the temperature of the battery module can reach above 600 ℃ when thermal runaway occurs, the sealing gasket 3 is easily burnt by flame to cause the flame to be sprayed out from the connection part of the box main body 1 and the box cover 2.
Further, in order to increase the sealing effect of the sealing gasket 3 and avoid the melting of the sealing gasket 3 when heated, the battery box connecting structure further comprises a fireproof coating 4, wherein the fireproof coating 4 is arranged on the spraying surface 311 of the sealing gasket 3, specifically, the fireproof coating 4 adopts a single-component water-based fireproof coating, and the single-component water-based fireproof coating is uniformly sprayed on the spraying surface 311 of the sealing gasket 3. Wherein, the spraying area of this fire protection coating 4 does not coincide with sealed face 321, and this fire protection coating 4 is intumescent fire protection coating 4, this fire protection coating 4 can be the foaming inflation rapidly when meeting fire promptly, thereby form thick spongy structure, can fill up peripheral little gap even, thereby can fill up the gap of case main part and case lid junction, and its coefficient of heat conductivity is lower, and then can slow down flame spread propagation speed, prevent intensity of a fire and high-temperature gas to spread outside the battery box in a certain time, can protect sealed pad 3 simultaneously, avoid sealed pad 3 to be heated and melt, the sealed effect of sealed pad 3 has been guaranteed.
It should be noted that when the battery module is out of control due to heat, the high-temperature and high-pressure gas sprayed by explosion can cause great damage to the surrounding structure or the battery module, in the battery box connecting structure in this embodiment, the intumescent fire protection coating 4 is arranged on the spraying surface 311 of the sealing gasket 3, and when the battery module is in a non-out-of-control state, the sealing gasket 3 is sealed by being attached to the box cover 2 and the box main body 1, and at this time, the fire protection coating 4 cannot expand; when battery module takes place thermal runaway, this fire protection coating 4 can expand the foaming sharply when exceeding the uniform temperature, and fire protection coating 4 after the inflation can push up tight case lid 2 to keep apart sealed 3 and flame or high temperature gas, prevent sealed 3 thermal fusion deformation that is sealed, promoted sealed life who fills up 3, guaranteed sealed 3 ability of filling up still can play sealed effect, prevent that flame blowout is outside case main part 1.
The battery box connection structure of this embodiment, through direct spraying fire protection coating 4 at sealed spraying face 311 of filling up 3, moreover, the steam generator is simple in operation, do not influence the dismantlement of case lid, thereby be convenient for maintain, and this fire protection coating 4 is thermal expansion formula fire protection coating 4, when battery module takes place the thermal runaway, fire protection coating 4 can sharp expansion foaming when exceeding the uniform temperature, the tight case lid 2 in top, and keep apart sealed 3 and flame or high-temperature gas, prevent sealed 3 thermal melting deformation that fills up, the life of sealed 3 has been promoted, sealed 3 of having guaranteed still can play the sealing effect, prevent outside flame blowout case main part 1, it is convenient to dismantle, and prevented outside flame blowout case main part 1.
In one embodiment of the utility model, see fig. 1 to 3, the fire-retardant coating 4 has a dry film thickness of 0.1 to 0.45mm, wherein dry film thickness refers to the thickness of the paint film which is completely dried through, the thickness being the dimension in the direction perpendicular to the gasket 3. In specific application, the dry film thickness of the fireproof coating 4 is 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm and 0.45mm, and can be selected according to specific requirements, and the dry film thickness of the fireproof coating 4 is set in the range, so that the fireproof effect is good. The thickness of a plurality of films is too small, the sealing property is not good, the fireproof effect cannot be achieved, the thickness of a plurality of films is too large, the paint waste is easily caused, and the cost is increased.
Specifically, in the present embodiment, the thermal expansion temperature of the fireproof coating 4 is equal to or higher than 260 ℃, that is, when the battery module in the box main body 1 is in fire, the fireproof coating 4 expands to form a thick sponge-like structure when the temperature reaches 260 ℃, so that the flame can be blocked.
Further, the expansion rate of the fireproof coating 4 is 15-20 times, namely the fireproof coating 4 expands and foams to 15-20 times of the original thickness rapidly when the temperature exceeds 260 ℃, so that the expanded thickness of the fireproof coating 4 is 1.2-9mm, and the heat conduction effect of the expanded fireproof coating 4 is low, so that flame can be isolated effectively, the sealing effect of the sealing gasket 3 is prevented from being influenced due to the failure of the silica gel sealing gasket 3, and the flame is prevented from being sprayed out of the box main body 1.
In a specific application, the expansion ratio of the fireproof coating 4 is 15, 16, 17, 18, 19 or 20, and the thickness of the fireproof coating 4 after expansion is 1.2mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm or 9mm, which can be selected according to specific requirements.
In one embodiment of the utility model, see in particular fig. 1 to 3, the fire-retardant coating 4 has some flame-retardant properties, wherein flame-retardant properties refer to the property of a substance or of a material treated to significantly delay the spread of a flame. Taking the fireproof coating 4 with the dry film thickness of 0.2mm as an example, in the experimental process, the fireproof coating 4 after expansion is sprayed by using 1200 ℃ vertical flame, the temperature of the surface of the fireproof coating 4 facing the sealing gasket 3 is still 190 ℃, the sealing gasket 3 cannot be influenced, namely, the sealing gasket 3 cannot be heated and melted, so that the sealing gasket 3 still can play a sealing role, and the flame is prevented from being sprayed out.
Specifically, after the expansion of the fireproof coating 4, the temperature of the surface of the fireproof coating 4 facing the sealing gasket 3 after 2.5 hours in the case of acetylene flame vertical burning at 1200 ℃ can be 190 ℃, and the temperature does not change suddenly, i.e. the thermal conductivity of the expanded fireproof coating 4 is relatively low.
The following examples are provided based on different structural fire protection coatings:
the first embodiment is as follows:
referring to fig. 2 and 3 specifically, the fireproof coating 4 is a straight piece, and the peripheral edge of the fireproof coating 4 abuts against the joint of the box cover 2 and the box main body 1, so that flame can be prevented from being sprayed out from the joint of the box cover 2 and the box main body 1, the processing is simple, and the sealing surface of the sealing gasket 3 can be directly sprayed.
Example two:
referring to fig. 4 and 5, the fireproof coating 4 is a bent piece, the fireproof coating 4 includes a main body 41 and an extending portion 42, the main body 41 is disposed on the spraying surface 311; extension 42 is bent and extended from the peripheral edge of main body 41 toward box body 1, and extension 42 covers the inner wall of box body 1, so that box body 1 can be protected by providing extension 42, and flame can be prevented from burning through box body 1.
Specifically, in the present embodiment, the extension portion 42 and the body portion 41 may be made of thermal expansion materials, however, in other embodiments, the extension portion 42 may be made of thermal expansion materials, and the body portion 41 may be made of ordinary fire-proof materials, that is, the body portion 41 does not expand when exposed to fire.
It should be noted that the fire-retardant coating 4 with different structures can be selected according to specific requirements.
In an embodiment of the present invention, the spraying part 31 and the sealing part 32 are integrally formed, which, on one hand, ensures the stability of the connection between the spraying part 31 and the sealing part 32, and on the other hand, facilitates the processing and forming.
Specifically, in this embodiment, the spraying portion 31 is the rectangle structure, sealing 32 is the loop configuration, and the edge all around of spraying portion 31 is located to the ring, two upper and lower surfaces of this sealing 32 contact with case lid 2 and case main part 1 respectively, can fill the gap of case lid 2 and case main part 1 junction, thereby can realize the sealed between case lid 2 and the case main part 1, further spraying face 311 spraying fireproof coating 4 at spraying portion 31, this fireproof coating 4 can take place the inflation when battery thermal runaway, when insulating flame, can further fill the gap after this fireproof coating 4 inflation, avoid flame to spout.
In an embodiment of the present invention, further referring to fig. 6 and 7, the box main body 1 includes a housing portion 11 and a bent portion 12, the housing portion 11 is frame-shaped, a containing space for containing the electric core assembly is provided in the housing portion 11, the bent portion 12 is bent from an edge of the housing portion 11 toward a direction away from the housing portion 11, the bent portion 12 is ring-shaped and is disposed around the housing portion 11; the surface of the bent portion 12 facing the case cover 2 is a flange surface, that is, the bent portion 12 is a flange plate, and is fixedly connected with the case portion 11 in a welding manner.
Further, referring to fig. 1 and 2, the sealing gasket 3 is attached to the flange surface, in order to realize the fixed connection between the box main body 1 and the box cover 2, the battery box connecting structure further comprises a connecting piece 5, the connecting piece 5 sequentially penetrates through the bending part 12, the sealing gasket 3 is detachably connected with the box cover 2, the box cover 2 is detachably connected with the box main body 1, the box cover 2 is conveniently detached and maintained or replaced, and the technical problem that the box cover 2 is scrapped due to the inconvenience in detachment is avoided.
Specifically, in this embodiment, the connecting member 5 is a bolt, the bent portion 12, the sealing gasket 3 and the case cover 2 are respectively provided with a threaded hole for the bolt to pass through, and the bolt is respectively passed through the threaded hole on the bent portion 12, the threaded hole on the sealing gasket 3 and the threaded hole on the case cover 2, so as to achieve detachable connection between the case cover 2 and the case main body 1, and the connection is relatively stable. When the box main body 1 and the box cover 2 are connected through the connecting piece 5, the sealing gasket 3 can be pressed, and the box main body 1 and the box cover 2 are connected in a sealing mode.
Of course, in other embodiments, the detachable connection between the box main body 1 and the box cover 2 can be realized through the connecting member 5 of other structures, such as key connection, pin connection, and riveting, and of course, a sliding groove can also be formed in the box main body 1, and the box cover 2 is provided with a sliding block, so that the detachable connection between the box main body 1 and the box cover 2 can be realized through the sliding between the sliding groove and the sliding block.
The utility model also provides a battery module, which comprises the electric core component and the battery box connecting structure in any embodiment, wherein the electric core component is arranged in the box main body.
This battery module is through adopting foretell battery box connection structure, through direct spraying fire protection coating 4 at sealed 3 spraying face 311 of filling up, and easy operation, do not influence the dismantlement of case lid, thereby be convenient for maintain, and this fire protection coating 4 is thermal expansion formula fire protection coating 4, when battery module takes place the thermal runaway, fire protection coating 4 can sharp inflation foaming when exceeding the uniform temperature, push up tight case lid 2, and keep apart sealed 3 and flame or high-temperature gas, prevent sealed 3 thermal melting deformation that fills up, the life of sealed 3 of having promoted, sealed 3 of having guaranteed still can play sealed effect, prevent outside flame blowout case main part 1, and convenient to dismantle, and prevented outside flame blowout case main part 1.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a battery box connection structure, includes that case main part and lid are located case lid on the case main part, the case main part is used for holding and establishes electric core subassembly, a serial communication port, battery box connection structure still includes:
the sealing gasket is arranged between the box cover and the box main body and comprises a spraying part and a sealing part, the spraying part covers the electric core assembly in the direction perpendicular to the box cover, the surface of the spraying part facing the box main body is a spraying surface, the sealing part is used for contacting with the periphery of the box main body, and the surface of the sealing part facing the box main body is a sealing surface; and
and the fireproof coating is arranged on the spraying surface and is a thermal expansion type fireproof coating.
2. The battery box connecting structure according to claim 1, wherein the dry film thickness of the fireproof coating is 0.1 to 0.45 mm.
3. The battery box connecting structure according to claim 1, wherein the fireproof coating has a thermal expansion temperature of 260 ℃ or more.
4. The battery box connecting structure according to any one of claims 1 to 3, wherein the expansion rate of the fireproof coating is 15 to 20 times.
5. The battery box connecting structure according to any one of claims 1 to 3, wherein the fireproof coating is a straight piece, and a peripheral edge of the fireproof coating abuts on a junction of the box cover and the box main body.
6. The battery box connecting structure according to any one of claims 1 to 3, wherein the fire-retardant coating is a bent piece, and the fire-retardant coating includes:
a body portion disposed on the spray face; and
the extension portion is bent and extended from the peripheral edge of the body portion in the direction towards the box main body, and covers the inner wall of the box main body.
7. The battery box connecting structure according to any one of claims 1 to 3, wherein the sprayed portion and the sealing portion are of an integrally molded structure.
8. The battery box connecting structure according to any one of claims 1 to 3, wherein the box main body includes:
the shell part is internally provided with an accommodating space for accommodating the capacitor assembly; and
the bending part is bent from the edge of the shell part towards the direction departing from the shell part, the surface of the bending part facing the box cover is a flange surface, and the bending part is fixedly connected with the shell part; the sealing gasket is attached to the flange surface, and the bending part, the sealing gasket and the box cover are detachably connected through the connecting piece.
9. The battery box connecting structure according to claim 8, wherein the connecting member is a bolt, and the bent portion, the gasket, and the box cover are respectively provided with a threaded hole through which the bolt passes.
10. A battery module, its characterized in that: the battery box connecting structure according to any one of claims 1 to 9, comprising a core assembly provided in the box main body, and a battery box connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121550850.0U CN215816176U (en) | 2021-07-08 | 2021-07-08 | Battery box connection structure and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121550850.0U CN215816176U (en) | 2021-07-08 | 2021-07-08 | Battery box connection structure and battery module |
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| CN215816176U true CN215816176U (en) | 2022-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220342000A1 (en) * | 2021-04-22 | 2022-10-27 | Hyundai Motor Company | Device for sensing voltage of high-voltage battery |
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2021
- 2021-07-08 CN CN202121550850.0U patent/CN215816176U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220342000A1 (en) * | 2021-04-22 | 2022-10-27 | Hyundai Motor Company | Device for sensing voltage of high-voltage battery |
| US11821954B2 (en) * | 2021-04-22 | 2023-11-21 | Hyundai Motor Company | Device for sensing voltage of high-voltage battery |
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