CN213184453U - Aluminum-shell battery module frame - Google Patents
Aluminum-shell battery module frame Download PDFInfo
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- CN213184453U CN213184453U CN202021676588.XU CN202021676588U CN213184453U CN 213184453 U CN213184453 U CN 213184453U CN 202021676588 U CN202021676588 U CN 202021676588U CN 213184453 U CN213184453 U CN 213184453U
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- battery module
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- end plate
- tightening
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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 discloses an aluminum-shell battery module frame belongs to battery technical field, including first curb plate, second curb plate, first end plate and second end plate, first curb plate, first end plate, second curb plate and second end plate connect gradually and constitute the rectangle framework, first curb plate and second curb plate symmetry set up, first end plate and second end plate symmetry set up, all be equipped with the pretension structure who is used for applying invariable pretightning force to the battery module on the contact surface of first end plate and second end plate and battery module. To the expend with heat and contract with cold among the prior art battery module charge-discharge process influence technical problem such as battery module stability, this utility model provides an aluminum hull battery module frame, the electric core electrochemistry inflation and the expend with heat and contract with cold of its adaptable battery module charge-discharge in-process improve battery module performance and security.
Description
Technical Field
The utility model relates to a battery technology field, concretely relates to aluminum-shell battery module frame.
Background
The battery module is used as a power core component of systems such as a power battery system, an energy storage system, a communication system, a civil system and the like, the importance of the electrical property and the safety of the battery module is self-evident, the battery module is a core module of the power battery system, the energy storage system, the communication system and the civil system, and the grouping mode and the electrical property of the battery cells directly influence the performance of the power battery system, the energy storage system, the communication system and the civil system.
For battery system, the battery module of lithium electricity has advantages such as the performance is good, small, light in weight, and aluminium shell electricity core security is good very much, the energy is big, compatible strong, to the battery module that aluminium shell electricity core combination formed, the group mode of battery module is especially important, and the pretightning force seriously influences the performance of each system after the welding. However, in the existing grouping process, the battery cell is usually only attached and glued, and a module formed by fixedly welding end side plates, namely a tightly assembled battery module, does not consider the physical characteristics of electrochemical expansion and thermal expansion and contraction of the battery cell in the charging and discharging process of the battery cell, does not consider the serious influence of different pretightening forces on the electrical performance of the battery module, and does not consider the safety of the battery cell in the charging and discharging expansion. The battery module is too tight in groups, and the unable thermal expansion power that releases of battery easily leads to the stiff end curb plate to warp and quick-witted case deformation, influences battery module stability, easily leads to battery module accident of catching fire even. The battery module is too loose, and although the battery module releases the thermal expansion power, easily lead to battery itself to warp unable the recovering, in addition fixed loose easily, the incident appears in the ease.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
To the expend with heat and contract with cold among the prior art battery module charge-discharge process influence technical problem such as battery module stability, this utility model provides an aluminum hull battery module frame, the electric core electrochemistry inflation and the expend with heat and contract with cold of its adaptable battery module charge-discharge in-process improve battery module performance and security.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
the utility model provides an aluminum-shell battery module frame, includes first curb plate, second curb plate, first end plate and second end plate, first curb plate, first end plate, second curb plate and second end plate connect gradually and constitute the rectangle framework, first curb plate and second curb plate symmetry set up, first end plate and second end plate symmetry set up, all be equipped with the pretension structure that is used for applying invariable pretightning force to the battery module on the contact surface of first end plate and second end plate and battery module.
Optionally, the pre-tightening structure is a heat-conducting elastic silica gel sheet.
Optionally, the pre-tightening structure is an MPP thermally conductive elastic sheet.
Optionally, the pre-tightening structure comprises a pre-tightening plate arranged in parallel with the end plate and at least one elastic piece arranged between the end plate and the pre-tightening plate, and the elastic piece is used for driving the pre-tightening plate to move towards the battery module.
Optionally, the back surface of the pre-tightening plate is connected with at least one guide post, the guide post is arranged along a movement path of the pre-tightening plate, and the first end plate and the second end plate are provided with guide holes matched with the guide posts.
Optionally, the elastic member is a spring, and the spring is sleeved on the guide post.
Optionally, the guide post and the pretensioning plate are detachably connected.
Optionally, the guide column and the pre-tightening plate are connected through a screw, and a screw counter bore for embedding the screw is formed in the pre-tightening plate.
Optionally, four guide columns are distributed on the back surface of the pre-tightening plate, and the four guide columns are respectively arranged at corners of the back surface of the pre-tightening plate.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses with battery module equipment shaping back, the pretension structure is applyed invariable pretightning force in order to guarantee the effort of frame and battery module support invariable to the battery module, at the in-process of the electric core electrochemistry inflation of battery module charge-discharge in-process and expend with heat and contract with cold, the pretension structure can be adjusted by oneself in order to adapt to the volume change of battery module to improve battery module performance and security.
(2) The utility model discloses consider that the battery changes under the circumstances of performance electrical property and security at the pretension operating mode, battery module charge-discharge's electric core electrochemistry expansion and expend with heat and contract with cold let the battery module obtain abundant release if adopting the elasticity space to do not influence the electrical property performance because of the bulging does not have the pretension.
(3) The utility model discloses a pretension structure adds invariable pretightning force to battery module, helps full play battery module's electrical property.
Drawings
Fig. 1 is an exploded schematic view of a frame of an aluminum-case battery module according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a pre-tightening structure of a frame of an aluminum-shell battery module according to an embodiment of the present invention;
1. a first side plate; 2. a second side plate; 3. a first end plate; 4. a second end plate; 5. a pre-tightening structure; 51. pre-tightening the plate; 511. a guide post; 512. a screw counter bore; 52. an elastic member; 6. and (4) a guide hole.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings 1-2.
Example 1
With reference to fig. 1, the aluminum-case battery module frame of the present embodiment includes a first side plate 1, a second side plate 2, a first end plate 3, and a second end plate 4, where the first side plate 1, the first end plate 3, the second side plate 2, and the second end plate 4 are sequentially connected to form a rectangular frame, a connection angle between the side plates and the end plates is 90 °, the first side plate 1, the first end plate 3, the second side plate 2, and the second end plate 4 are fixedly connected by welding, the first side plate 1 and the second side plate 2 are symmetrically arranged, the first end plate 3 and the second end plate 4 are symmetrically arranged, and pre-tightening structures 5 for applying a constant pre-tightening force to the battery module are respectively arranged on contact surfaces of the first end plate 3 and the second end plate 4 with the battery module; after assembling and forming with the battery module, the pretension structure exerts invariable pretension force in order to guarantee that the effort of frame and battery module support is invariable to the battery module, and at the electric core electrochemistry inflation of battery module charge-discharge in-process and the in-process of expending with heat and contract with cold, the pretension structure can adjust by oneself in order to adapt to the volume change of battery module to improve battery module performance and security.
In this embodiment, pretension structure 5 is heat conduction elastic silica gel piece or MPP heat conduction elastic piece, heat conduction elastic silica gel piece or MPP heat conduction elastic piece install on first end plate 3 and second end plate 4 after through beating the gluey processing realization fixed, heat conduction elastic silica gel piece and MPP heat conduction elastic piece all have good heat conductivility and elastic property, when adapting to battery module volume change, heat conduction elastic silica gel piece and MPP heat conduction elastic piece can be timely transmits the heat to battery module, so that battery module's temperature keeps at best operating temperature as far as possible, rely on the elasticity control of heat conduction elastic silica gel piece or MPP heat conduction elastic piece to respond to battery module service property, guarantee battery security performance and electrical property, full play battery module core effect.
Example 2
With reference to fig. 1 and 2, in the frame of the aluminum-shell battery module of the present embodiment, compared with embodiment 1, the pre-tightening structure 5 of the present embodiment includes a pre-tightening plate 51 parallel to the end plate and at least one elastic element 52 disposed between the end plate and the pre-tightening plate 51, where the elastic element 52 is used to drive the pre-tightening plate 51 to move toward the battery module, and the thickness of the pre-tightening plate 51 is smaller than that of the end plate, generally smaller than about 1 MM; when the battery module is in operation, the battery core is subjected to electrochemical expansion and thermal expansion and cold contraction, and the battery module is subjected to thermal expansion, the pre-tightening plate 51 is pushed to move towards the end plate by overcoming the elastic acting force of the elastic piece 52; when the battery module contracts, the elastic acting force of the elastic piece 52 pushes the pre-tightening plate 51 to move towards the battery module, the pre-tightening force between the battery module and the pre-tightening plate 51 is constant, the cycle performance and the cycle life of the battery module are further facilitated, and the safety of the module due to the fact that the pressure of the module cannot be released due to thermal expansion is guaranteed; the pre-tightening plate 51 and the battery module are in surface contact with each other, so that the battery module is uniformly stressed.
As an alternative to this embodiment, at least one guiding column 511 is connected to the back of the pretensioning plate 51, the guiding column 511 is disposed along the moving path of the pretensioning plate 51, and the first end plate 3 and the second end plate 4 are provided with a guiding hole 6 for the guiding column 511 to cooperate; when the pretension plate 51 moves horizontally relative to the end plate, the guide column 511 can be drawn in the guide hole 6 to ensure that the pretension plate 51 and the end plate are kept in a horizontal state at any time, so that the pretension plate 51 is prevented from moving eccentrically and being stressed eccentrically, and the pretension plate 51 is ensured to only move axially.
In this embodiment, the elastic element 52 is a spring, the spring is sleeved on the guide post 511, one end of the spring abuts against the pre-tightening plate 51, and the other end of the spring abuts against the end plate; the spring is sleeved on the guide column 511, so that the spring cannot be twisted under the limiting action of the guide column 511 when the length of the spring is changed under the force of the pre-tightening plate 51, and the elastic acting force generated on the pre-tightening plate 51 after the spring is compressed is ensured to be always vertical to the end face of the pre-tightening plate 51.
In this embodiment, in order to facilitate the installation and fixation between the guiding column 511 and the pre-tightening plate 51, the guiding column 511 and the pre-tightening plate 51 are detachably connected.
In this embodiment, the guide column 511 and the pre-tightening plate 51 are detachably connected by a screw, and the pre-tightening plate 51 is provided with a screw counter bore 512 for a screw to be embedded; compared with other connection structures, the screw connection is stable, the cost is low, the screw counter bore 512 can be used for mounting the screw in a concealed mode, and the situation that the screw protrudes out of the surface of the pre-tightening plate 51 to influence the contact between the pre-tightening plate 51 and the battery module is avoided.
In this embodiment, four guide posts 511 are distributed on the back surface of the pre-tightening plate 51, and the four guide posts 511 are respectively arranged at the corners of the back surface of the pre-tightening plate 51; by adopting the distribution design of the guide columns 511, the guide of the pre-tightening plate 51 during movement is more stable, and the constancy of the pre-tightening force is further ensured.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides an aluminum hull battery module frame which characterized in that: including first curb plate, second curb plate, first end plate and second end plate, first curb plate, first end plate, second curb plate and second end plate connect gradually and constitute the rectangle framework, first curb plate and second curb plate symmetry set up, first end plate and second end plate symmetry set up, all be equipped with the pretension structure that is used for applying invariable pretightning force to the battery module on the contact surface of first end plate and second end plate and battery module.
2. The aluminum-shell battery module frame of claim 1, wherein: the pre-tightening structure is a heat-conducting elastic silica gel sheet.
3. The aluminum-shell battery module frame of claim 1, wherein: the pre-tightening structure is an MPP heat-conducting elastic sheet.
4. The aluminum-shell battery module frame of claim 1, wherein: the pre-tightening structure comprises a pre-tightening plate arranged in parallel with the end plate and at least one elastic piece arranged between the end plate and the pre-tightening plate, and the elastic piece is used for driving the pre-tightening plate to move towards the battery module.
5. The aluminum-shell battery module frame of claim 4, wherein: the back of the pre-tightening plate is connected with at least one guide post, the guide post is arranged along the motion path of the pre-tightening plate, and the first end plate and the second end plate are provided with guide holes matched with the guide posts.
6. The aluminum-shell battery module frame of claim 5, wherein: the elastic piece is a spring, and the spring is sleeved on the guide post.
7. The aluminum-shell battery module frame of claim 5, wherein: the guide post is detachably connected with the pre-tightening plate.
8. The aluminum-shell battery module frame of claim 7, wherein: the guide post is connected with the pre-tightening plate through a screw, and a screw counter bore for embedding the screw is formed in the pre-tightening plate.
9. The aluminum-shell battery module frame of claim 5, wherein: four guide posts are distributed on the back face of the pre-tightening plate, and the four guide posts are respectively arranged at the corners of the back face of the pre-tightening plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676588.XU CN213184453U (en) | 2020-08-12 | 2020-08-12 | Aluminum-shell battery module frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676588.XU CN213184453U (en) | 2020-08-12 | 2020-08-12 | Aluminum-shell battery module frame |
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| Publication Number | Publication Date |
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| CN213184453U true CN213184453U (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021676588.XU Active CN213184453U (en) | 2020-08-12 | 2020-08-12 | Aluminum-shell battery module frame |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900299A (en) * | 2020-08-12 | 2020-11-06 | 浙江南都电源动力股份有限公司 | Aluminum-shell battery module frame and welding tool thereof |
| CN114421077A (en) * | 2021-12-07 | 2022-04-29 | 浙江零跑科技股份有限公司 | New forms of energy car battery module |
-
2020
- 2020-08-12 CN CN202021676588.XU patent/CN213184453U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900299A (en) * | 2020-08-12 | 2020-11-06 | 浙江南都电源动力股份有限公司 | Aluminum-shell battery module frame and welding tool thereof |
| CN111900299B (en) * | 2020-08-12 | 2023-12-12 | 浙江南都电源动力股份有限公司 | Aluminum shell battery module frame and welding tool thereof |
| CN114421077A (en) * | 2021-12-07 | 2022-04-29 | 浙江零跑科技股份有限公司 | New forms of energy car battery module |
| CN114421077B (en) * | 2021-12-07 | 2024-05-14 | 浙江零跑科技股份有限公司 | New energy vehicle battery module |
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