Battery module with heating function
By setting up a heating film in the battery module and a battery cell module with a rotating stack design, the problem of reduced efficiency of the battery module in the low temperature environment is solved, and efficient power output under low temperature conditions and the stability and safety of the battery cell module are achieved.
Patent Information
- Application Number
- CN202421625917.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-10
AI Technical Summary
In low temperature environments, the charging and discharging efficiency of the battery module will be reduced, affecting its working performance.
A battery module with heating function is designed, and the rapid and uniform heating of the battery cell is achieved by setting a heating film between the battery cell modules. The battery cell module adopts a rotating stack design, and improves assembly and scalability through group spacing arrangement and alternating positive and negative electrode layout.
Under low temperature conditions, through the use of heating film, the working performance of the battery module has been improved, ensuring the stable power output of the battery module under cold conditions, and improving the stability and safety of the battery module.
Smart Images
Figure CN222914922U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a battery module with a heating function. Background Art
[0002] At present, battery modules are often used as power units in electric vehicles and portable electronic devices. A battery module usually has an optimal operating temperature range. Within this temperature range, the battery module has a higher operating efficiency. When the ambient temperature is too low, the performance of the battery cells will be affected, specifically, the charging and discharging efficiencies will decrease. Therefore, a battery module with a heating function is needed to ensure that the battery module has good operating efficiency when used in a low-temperature environment. Summary of the Utility Model
[0003] In order to overcome the shortcomings of the prior art, the utility model provides a battery module with a heating function.
[0004] The technical solution is as follows: A battery module with a heating function includes:
[0005] A battery cell module, there are two of the battery cell modules, and the two battery cell modules are rotatably connected, and after the two battery cell modules rotate, they are stacked;
[0006] A heating film, the heating film is arranged between the two stacked battery cell modules;
[0007] A fastening assembly, including a screw, a nut and a fixing plate. A plurality of the screws slidably penetrate through the two stacked battery cell modules and are slidably connected to the two fixing plates. The two stacked battery cell modules are located between the two fixing plates, and nuts are threadedly connected to both ends of the screw away from the two fixing plates.
[0008] As an improvement of the above solution, the battery cell module includes battery cells and brackets. Both ends of the plurality of battery cells are fixedly connected to the two brackets respectively, and the brackets are slidably connected to the plurality of screws.
[0009] As an improvement of the above solution, the plurality of battery cells are arranged in a grouped and spaced manner, and between the plurality of battery cell groups, they are arranged alternately in positive and negative on the same plane.
[0010] As an improvement of the above solution, the battery cell module further includes a plurality of connecting pieces. The plurality of connecting pieces connect the tops or bottoms of the rows of battery cell groups in series with positive and negative adjacent, and the two battery cell modules are connected in series through one of the connecting pieces.
[0011] As an improvement of the above solution, the connecting piece is one or more of a nickel sheet, a nickel-plated steel sheet or a copper sheet.
[0012] As an improvement of the above solution, the connection mode between the connecting piece and the battery cell is one or more of screw connection, welding or plugging.
[0013] As an improvement of the above solution, the connection mode between the heating film and the battery cell module is one of screw connection, bonding or snap connection.
[0014] As an improvement of the above solution, the heating film is one of a silicone heating film, a polyimide heating film, a PTC heating film or an NTC heating film.
[0015] As an improvement of the above solution, the fastening assembly further includes a sleeve, and the sleeve is sleeved on the screw rod.
[0016] As an improvement of the above solution, the material of the sleeve is one or more of plastic, silicone or rubber.
[0017] By arranging a heating film between the battery cell modules, the present utility model can quickly and uniformly heat the battery cells when needed, improving the working performance of the battery module under low temperature conditions; at the same time, through the rotational stacking design of the battery cell modules, and the battery cells are arranged in a grouped and spaced manner and the positive and negative electrodes are alternately arranged, the battery module has good assembly and expandability. Description of the Drawings
[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.
[0019] Figure 2 is an exploded three-dimensional structural diagram of the battery cell module of the present utility model.
[0020] Figure 3 is a three-dimensional structural schematic diagram of the fastening assembly of the present utility model.
[0021] Figure 4 is a three-dimensional structural schematic diagram when two battery cell modules of the present utility model are unfolded.
[0022] Figure 5 is a three-dimensional structural schematic diagram of the connecting piece of the present utility model.
[0023] Names of the reference numerals in the figure: 1. Battery cell module, 101. Bracket, 102. Battery cell, 103. Connecting piece, 2. Heating film, 3. Fastening assembly, 301. Screw rod, 302. Fixed plate, 303. Nut, 304. Sleeve. Detailed Embodiments
[0024] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are for illustrating the present application and not for limiting the scope of the present application. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually those in conventional experiments.
[0025] Embodiment: A battery module with a heating function, as Figures 1-5 shown, includes:
[0026] The battery cell module 1, there are two battery cell modules 1, and the two battery cell modules 1 are rotatably connected. After the two battery cell modules 1 are rotated, they are stacked, which can not only improve the space utilization rate, but also facilitate adjusting the layout of the battery cell module 1 when needed;
[0027] The heating film 2 is arranged between the two stacked battery cell modules 1 to ensure that heat can be evenly and effectively transferred to the inside of the battery cell module 1, thereby increasing the working temperature of the battery module;
[0028] The fastening assembly 3 includes a screw 301, a nut 303 and a fixing plate 302. Four screws 301 slide through the two stacked battery cell modules 1 and are slidably connected to the two fixing plates 302. The two stacked battery cell modules 1 are located between the two fixing plates 302. Nuts 303 are threadedly connected to both ends of the screw 301 away from the two fixing plates 302. The combination of the nut 303 and the fixing plate 302 is used for fixation, so that the battery cell modules 1 can be stacked together and remain stable.
[0029] Among them, the battery cell module 1 includes battery cells 102 and a bracket 101. Both ends of multiple battery cells 102 are fixedly connected to the two brackets 101 respectively. The bracket 101 is slidably connected to the four screws 301. Multiple battery cells 102 are arranged in groups at intervals, and the multiple groups of battery cells 102 are arranged alternately in the same plane according to positive and negative polarities.
[0030] Among them, the battery cell module 1 further includes a plurality of connecting pieces 103. The connecting pieces 103 are made of nickel sheets. The top or bottom of the rows of battery cell groups 102 are connected in series with positive and negative adjacent by spot welding, and the two battery cell modules 1 are connected in series through a connecting piece 103 to ensure efficient and stable power transmission between the battery cells 102.
[0031] Among them, the heating film 2 uses an NTC heating film, and the heating film 2 is connected to the battery cell module 1 by bonding.
[0032] Among them, the fastening assembly 3 further includes a sleeve 304. The sleeve 304 is made of PVC plastic. The sleeve 304 is sleeved on the screw 301, which can not only enhance the structural strength of the screw 301, but also facilitate providing additional support and anti-slip effect when tightening the nut 303.
[0033] In the normal use state, the battery module connects multiple battery cells 102 in series through the connecting piece 103 to achieve the storage and output of electric energy. When the battery module is in a low-temperature environment, the heating film 2 works, and the heat generated by the heating film 2 is transferred to the inside of the battery cell module 1 through heat conduction, effectively increasing the temperature of the battery cells 102, thereby avoiding the performance degradation of the battery cells 102 at extremely low temperatures and ensuring that the battery module can still provide stable power output under cold conditions; at the same time, the fastening assembly 3 can ensure the stability and safety of the battery cell module 1 during use, preventing damage caused by vibration or external forces.
[0034] The above embodiments are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.
Claims
1. A battery module with heating function, characterized in that: Included are: A battery cell module (1), wherein there are two battery cell modules (1), the two battery cell modules (1) are rotatably connected to each other, and the two battery cell modules (1) are stacked after rotation; A heating film (2), the heating film (2) being arranged between the two stacked battery cell modules (1); a fastening assembly (3), comprising a screw rod (301), a nut (303) and a fixing plate (302), wherein a plurality of the screw rods (301) are slidably inserted into the two stacked battery cell modules (1) and are slidably connected to the two fixing plates (302), the two stacked battery cell modules (1) being located between the two fixing plates (302), and both ends of the screw rods (301) away from the two fixing plates (302) being threadedly connected with nuts (303).
2. A battery module with heating function as claimed in claim 1, characterized in that: The battery cell module (1) comprises a battery cell (102) and a bracket (101); two ends of a plurality of battery cells (102) are respectively fixedly connected to two brackets (101); and the bracket (101) is slidably connected to the plurality of screw rods (301).
3. A battery module with heating function as claimed in claim 2, characterized in that: The multiple battery cells (102) are arranged in groups at intervals, and the multiple battery cell (102) groups are arranged alternately with positive and negative poles on the same plane.
4. A battery module with heating function as claimed in claim 3, characterized in that: The battery cell module (1) further comprises a plurality of connecting sheets (103), wherein the plurality of connecting sheets (103) connect the tops or bottoms of the rows of battery cells (102) in adjacent positive and negative series connection, and two battery cell modules (1) are connected in series via one of the connecting sheets (103).
5. A battery module with heating function as claimed in claim 4, characterized in that: The connecting sheet (103) is one or more of a nickel sheet, a nickel-plated steel sheet or a copper sheet.
6. A battery module with heating function as claimed in claim 5, characterized in that: The connection between the connecting piece (103) and the battery cell (102) is one or more of screw connection, welding or plug connection.
7. A battery module with heating function as claimed in claim 6, characterized in that: The heating film (2) and the battery cell module (1) are connected in a manner of screw connection, bonding, or snap connection.
8. A battery module with heating function as claimed in claim 7, characterized in that: The heating film (2) is one of a silicone heating film, a polyimide heating film, a PTC heating film, or an NTC heating film.
9. A battery module with heating function as claimed in claim 8, characterized in that: The fastening assembly (3) further comprises a sleeve (304), wherein the sleeve (304) is sleeved on the screw rod (301).
10. A battery module with heating function as claimed in claim 9, characterized in that: The sleeve (304) is made of one or more of plastic, silicone or rubber.