Auxiliary tool for balancing differential pressure of power battery module
By designing a power battery module equalization pressure difference auxiliary tooling, including a stable frame and conductive module, the problem of poor stability of the electrical clamping and battery cell connection is solved, and the stable clamping and charging and discharging operation of the battery cell module is achieved, and the performance and life of the battery module are improved.
Patent Information
- Application Number
- CN202421694385.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-17
AI Technical Summary
During the pressure difference equalization process of the power battery module, the connection stability between the electric clip and the battery cell is difficult to ensure, which can easily lead to damage or deformation of the battery cell plate.
A power battery module equalization pressure difference auxiliary tooling is designed, including a first vertical plate, a second vertical plate, a connecting plate and a conductive module. These components form a stable frame to clamp the battery cell module, and form an electrical circuit with the battery cell module through the conductive module to realize the charge and discharge operation.
The tooling can reliably clamp the battery cell module to avoid shaking, ensure stability during power-on, and adapt to battery cell modules of different sizes and shapes through flexible adjustment of the conductive module, improving the performance and life of the battery module.
Smart Images
Figure CN222851487U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery processing equipment, and in particular to a power battery module pressure difference equalization auxiliary tooling. Background Art
[0002] Power batteries are one of the core components of new energy vehicles, and their performance directly affects the endurance, power performance and safety of the entire vehicle. In the manufacturing process of power batteries, battery PACK (i.e. battery pack) is a key link. Power battery PACK is the process of assembling multiple single cylindrical lithium batteries into modules through different combinations of series and parallel, and then assembling different modules into battery packs that meet customer product requirements. In order to ensure the performance and safety of the power battery pack, the various parameters of the battery cell must be highly consistent. However, due to differences in production processes, raw materials, production equipment, personnel operating levels and environmental conditions, it is difficult to fully meet these requirements in actual production, resulting in battery consistency issues becoming a major challenge in the industry.
[0003] During the assembly of the battery pack, the cells must not only be of the same type and model, but also have the same parameters such as capacity, internal resistance, and voltage. If these parameters are inconsistent, during the use of the battery pack, an unbalanced current distribution will occur between different cells, causing some cells to be overcharged or over-discharged, thus affecting the overall performance and life of the battery pack. This consistency issue is particularly prominent in high-rate discharge applications.
[0004] In order to alleviate the impact of inconsistent cell parameters, voltage differential balancing technology is usually introduced in battery modules. By real-time monitoring and adjusting the voltage of the battery module, performance problems caused by inconsistent voltage can be alleviated to a certain extent. However, with the increase in the number of cells in the battery pack module, the difficulty and complexity of voltage differential balancing also increase. At present, when the voltage differential of the battery module is balanced, the connection of the battery module mostly adopts the method of clamping the electrode sheet with an electric clamp. However, due to the variety of types and specifications of electrode sheets, ordinary electric clamps are prone to loose clamping and falling off when clamping electrode sheets of various specifications. It is easy to cause damage or deformation of the battery cell electrode sheet.
[0005] Therefore, when performing voltage differential equalization on a battery module, how to ensure the stability of the connection between the electric clip and the battery cell has become a technical problem that needs to be solved urgently. Utility Model Content
[0006] The main purpose of the utility model is to provide a power battery module pressure difference equalization auxiliary tooling, which aims to ensure the stability of the connection between the electric clip and the battery cell when the pressure difference of the battery module is equalized.
[0007] In order to achieve the above-mentioned purpose, the utility model proposes a power battery module equalization pressure difference auxiliary tooling, comprising:
[0008] First vertical board;
[0009] A second vertical plate, arranged opposite to the first vertical plate;
[0010] A connecting plate, a first side of which is connected to the first vertical plate, and a second side of which is arranged opposite to the first side is connected to the second vertical plate, so that a clamping space for clamping the battery cell module is provided between the first vertical plate and the second vertical plate; and
[0011] At least two conductive modules are respectively connected to the first vertical plate and the second vertical plate, and can form an electrical circuit with the battery module located in the clamping space to perform charging and discharging operations on the battery module.
[0012] The combination of the first vertical plate, the second vertical plate and the connecting plate forms a stable frame that can reliably clamp the battery module, avoid shaking of the battery module, and ensure stability when the battery is powered on. The conductive module is connected to the two vertical plates respectively, and can form an electrical circuit with the battery module to facilitate charging and discharging operations.
[0013] In one embodiment of the present application, a sliding through groove for allowing the conductive module to move is provided on the first vertical plate and / or the second vertical plate.
[0014] The sliding groove allows the conductive module to move freely on the first vertical plate and / or the second vertical plate to adapt to battery modules of different sizes. Through the cooperation of the sliding groove and the conductive module, the balanced pressure difference operation of the battery module can be achieved, thereby improving the performance and life of the battery module.
[0015] In one embodiment of the present application, the sliding through groove is formed by at least two "cross" shaped through holes connected in series end to end.
[0016] The sliding slot design with "cross"-shaped through holes connected in series can flexibly adjust the position of the conductive module to adapt to battery modules of different sizes and shapes. The continuity of the sliding slot allows the conductive module to smoothly reciprocate on the first vertical plate and the second vertical plate to realize the charging and discharging operations of the battery module.
[0017] In one embodiment of the present application, the conductive module includes:
[0018] A moving assembly connected to the sliding slot and capable of reciprocating along the length direction of the sliding slot; and
[0019] The conductive member is threadably connected to the movable assembly and can rotate relative to the movable assembly so that the contact end of the conductive member abuts against the electrode portion of the battery module.
[0020] The moving assembly allows the conductive module to move freely along the length direction in the sliding slot to adapt to battery modules of different sizes and shapes. Through the reciprocating motion of the moving assembly, the position of the conductive part can be accurately adjusted to ensure that its contact end is in close contact with the electrode part of the battery module, thereby improving the efficiency and accuracy of the charging and discharging operation. The conductive part is connected to the moving assembly by threads, which ensures the stability and reliability of the conductive part. The rotation of the conductive part allows the conductive part to rotate relative to the moving assembly, making it easy to adjust the position of the contact end to adapt to the layout and wiring methods of different battery modules.
[0021] In one embodiment of the present application, the mobile component includes:
[0022] A connecting column, disposed in the sliding groove;
[0023] A first limiting plate connected to the first end of the connecting column;
[0024] The second limiting plate is connected to the second end of the connecting column, and the first limiting plate and the second limiting plate cooperate with each other to limit the connecting column from moving out of the sliding groove.
[0025] The connecting column, as the main supporting part of the moving assembly, ensures the stable movement of the conductive module in the sliding slot. The first limit plate and the second limit plate cooperate with the connecting column to limit the moving range of the connecting column and prevent it from moving out of the sliding slot, thereby ensuring the stability and reliability of the conductive module. Through the combined design of the connecting column, the first limit plate and the second limit plate, the moving range of the conductive module is precisely controlled, ensuring stable and reliable contact between the conductive part and the battery module.
[0026] In one embodiment of the present application, the conductive module further includes:
[0027] The rotating handle is connected to an end of the conductive member away from the battery core module to facilitate the rotation of the conductive member.
[0028] The turning handle allows the operator to easily turn the conductive member and adjust the position of the conductive member to ensure that its contact end is in close contact with the electrode portion of the battery cell module.
[0029] In one embodiment of the present application, the rotating handle is a cube, and the four side walls of the cube are provided with recessed portions for easy gripping.
[0030] The rotating handle is in a cube shape with a large surface area, which is convenient for operators to grasp and operate. Concave parts are provided on the four side walls of the rotating handle, which further provides the convenience of grasping, so that the operator can control the rotating handle more stably.
[0031] In one embodiment of the present application, the first vertical plate, the second vertical plate, and the connecting plate are all made of insulating material.
[0032] The insulating material has good insulating properties and can effectively prevent leakage and interference of current. The first vertical plate, the second vertical plate and the connecting plate made of insulating material can effectively isolate the conductive parts and other metal parts, prevent accidental leakage and short circuit of current, and improve the safety and reliability of the circuit.
[0033] In an embodiment of the present application, the connecting column, the first limiting plate, and the second limiting plate are all made of insulating materials.
[0034] Insulating materials have good insulation properties and can effectively prevent current leakage and interference. The connecting column, the first limiting plate and the second limiting plate made of insulating materials can effectively isolate the conductive parts and other metal parts, prevent accidental current leakage and short circuit, and improve the safety and reliability of the circuit.
[0035] In one embodiment of the present application, the first vertical plate can be bent relative to the connection between the first vertical plate and the connecting plate to facilitate the placement of the battery cell module in the clamping space; a locking piece is also provided on one side of the first vertical plate, and when the first vertical plate clamps the battery cell module, the first vertical plate is locked to prevent the first vertical plate from bending.
[0036] The first vertical plate has a bendable property and can be bent relative to the connection of the connecting plate. This can facilitate the placement of the battery module in the clamping space, making the clamping process more flexible and convenient. The locking member can lock the first vertical plate when clamping the battery module to prevent it from bending. This can ensure the stability and reliability of the first vertical plate during the clamping process and avoid failure or damage caused by bending.
[0037] By adopting the above technical solution, a stable frame is formed by combining the first vertical plate, the second vertical plate and the connecting plate, which can reliably clamp the battery module. The shaking of the battery module is avoided, and the stability when the battery is powered is ensured. The conductive module is connected to the two vertical plates respectively, and can form an electrical circuit with the battery module, which is convenient for charging and discharging operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] The present invention is described in detail below with reference to specific embodiments and accompanying drawings, wherein:
[0039] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;
[0040] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the conductive module;
[0041] 10. First vertical plate; 20. Second vertical plate; 30. Connecting plate; 40. Sliding through groove; 50. Conductive module; 51. Connecting column; 52. First limiting plate; 53. Second limiting plate; 54. Rotating handle; 55. Conductive member. DETAILED DESCRIPTION
[0042] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the utility model and do not constitute a limitation on the utility model.
[0043] like Figure 1 to Figure 2 As shown, in order to achieve the above purpose, the utility model proposes a power battery module equalization pressure difference auxiliary tooling, including:
[0044] A first vertical plate 10;
[0045] A second vertical plate 20, arranged opposite to the first vertical plate 10;
[0046] A connecting plate 30, a first side of which is connected to the first vertical plate 10, and a second side of which is opposite to the first side and is connected to the second vertical plate 20, so that a clamping space for clamping the battery cell module is provided between the first vertical plate 10 and the second vertical plate 20; and
[0047] At least two conductive modules 50 are respectively connected to the first vertical plate 10 and the second vertical plate 20 , and can form an electrical circuit with the battery module located in the clamping space to perform charging and discharging operations on the battery module.
[0048] Specifically, the first vertical plate 10 is vertically arranged as a side surface of the entire device. The first vertical plate 10 is a part supporting the battery module and is connected to the conductive module 50.
[0049] The second vertical plate 20 is arranged opposite to the first vertical plate 10 to form another side of the device. The second vertical plate 20 is also connected to a conductive module 50, and clamps the battery module together with the first vertical plate 10.
[0050] The first side of the connecting plate 30 is connected to the first vertical plate 10, and the second side is connected to the second vertical plate 20. The connecting plate 30 fixes the first vertical plate 10 and the second vertical plate 20 together to form a stable frame structure. The function of the connecting plate 30 is to ensure that the clamping space between the first vertical plate 10 and the second vertical plate 20 is not deformed, so as to stably clamp the battery module.
[0051] At least two conductive modules 50 are respectively connected to the first vertical plate 10 and the second vertical plate 20. The conductive module 50 can form an electrical circuit with the battery module in the clamping space, so as to charge and discharge the battery module. There are two conductive modules 50 in the present application.
[0052] By adopting the above technical solution, a stable frame is formed by combining the first vertical plate 10, the second vertical plate 20 and the connecting plate 30, which can reliably clamp the battery module. The shaking of the battery module is avoided, and the stability when the battery is powered is ensured. The conductive module 50 is connected to the two vertical plates respectively, and can form an electrical circuit with the battery module to facilitate charging and discharging operations.
[0053] In one embodiment of the present application, a sliding groove 40 for allowing the conductive module 50 to move is provided on the first vertical plate 10 and / or the second vertical plate 20 .
[0054] Specifically, the first vertical plate 10 and the second vertical plate 20 are connected together by the connecting plate 30 to form a space for clamping the battery module. The sliding groove 40 is located on the first vertical plate 10 and / or the second vertical plate 20, and can be used for the conductive module 50 to move.
[0055] With the above technical solution, the sliding groove 40 allows the conductive module 50 to move freely on the first vertical plate 10 and / or the second vertical plate 20 to adapt to battery modules of different sizes. Through the cooperation of the sliding groove 40 and the conductive module 50, the balanced pressure difference operation of the battery module can be achieved, thereby improving the performance and life of the battery module.
[0056] In one embodiment of the present application, the sliding through groove 40 is formed by at least two "cross" shaped through holes connected in series end to end.
[0057] Specifically, the first vertical plate 10 and the second vertical plate 20 are connected together by the connecting plate 30 to form a space for clamping the battery module. The sliding groove 40 is located on the first vertical plate 10 and the second vertical plate 20 and can slide freely along their length direction. The head and tail of each "cross" shaped through hole are connected together to form a continuous sliding path, in which the conductive module 50 can move.
[0058] By adopting the above technical solution, the sliding slot 40 design with "cross" shaped through holes connected in series can flexibly adjust the position of the conductive module 50 to adapt to battery modules of different sizes and shapes. The continuity of the sliding slot 40 allows the conductive module 50 to smoothly reciprocate on the first vertical plate 10 and the second vertical plate 20 to realize the charging and discharging operation of the battery module.
[0059] In one embodiment of the present application, the conductive module 50 includes:
[0060] A moving assembly connected to the sliding slot 40 and capable of reciprocating along the length direction of the sliding slot 40; and
[0061] The conductive member 55 is threadedly connected to the movable assembly and can rotate relative to the movable assembly so that the contact end of the conductive member 55 abuts against the electrode portion of the battery module.
[0062] Specifically, the moving assembly is connected to the sliding slot 40 and can reciprocate along the length direction of the sliding slot 40. The moving assembly is composed of a connecting column 51, a first limiting plate 52 and a second limiting plate 53. The conductive member 55 is threadedly connected to the moving assembly and can rotate relative to the moving assembly. The contact end of the conductive member 55 abuts against the electrode portion of the battery module.
[0063] The moving assembly is connected to the sliding slot 40, and the conductive member 55 is fixed to the moving assembly by threaded connection. The moving assembly can reciprocate along the length direction of the sliding slot 40 to adjust the position of the conductive member 55. The conductive member 55 can rotate relative to the moving assembly by turning, so that the contact end of the conductive member 55 can contact the electrode part of the battery module.
[0064] By adopting the above technical solution, the mobile component allows the conductive module 50 to move freely in the length direction within the sliding groove 40 to adapt to battery modules of different sizes and shapes. Through the reciprocating motion of the mobile component, the position of the conductive member 55 can be accurately adjusted to ensure that its contact end is in close contact with the electrode portion of the battery module, thereby improving the efficiency and accuracy of the charging and discharging operation. The conductive member 55 is connected to the mobile component by a thread, which ensures the stability and reliability of the conductive member 55. The rotation of the conductive member 55 allows the conductive member 55 to rotate relative to the mobile component, which facilitates the adjustment of the position of the contact end and adapts to the layout and wiring methods of different battery modules.
[0065] In one embodiment of the present application, the mobile component includes:
[0066] A connecting column 51 is disposed in the sliding groove 40;
[0067] A first limiting plate 52 connected to a first end of the connecting column 51;
[0068] The second limiting plate 53 is connected to the second end of the connecting column 51 , and the first limiting plate 52 and the second limiting plate cooperate with each other to limit the connecting column 51 from moving out of the sliding groove.
[0069] Specifically, the connecting column 51 is located in the sliding groove 40, serving as the main support part of the moving assembly. The first limiting plate 52 is connected to the first end of the connecting column 51 to limit the moving range of the connecting column 51 in the sliding groove 40. The second limiting plate 53 is connected to the second end of the connecting column 51, and cooperates with the first limiting plate 52 to jointly limit the connecting column 51 from moving out of the sliding groove 40.
[0070] With the above technical solution, the connecting column 51 serves as the main supporting part of the moving assembly, ensuring the stable movement of the conductive module 50 in the sliding groove 40. The first limiting plate 52 and the second limiting plate 53 cooperate with the connecting column 51 to limit the moving range of the connecting column 51 and prevent it from moving out of the sliding groove 40, thereby ensuring the stability and reliability of the conductive module 50. Through the combined design of the connecting column 51, the first limiting plate 52 and the second limiting plate 53, the moving range of the conductive module 50 is precisely controlled, ensuring that the contact between the conductive member 55 and the battery module is stable and reliable.
[0071] In one embodiment of the present application, the conductive module 50 further includes:
[0072] The rotating handle 54 is connected to an end of the conductive member 55 away from the battery module to facilitate the rotation of the conductive member 55 .
[0073] Specifically, the conductive member 55 is connected to the moving assembly by threads, which ensures the stability and reliability of the conductive member 55. The rotating handle 54 is connected to one end of the conductive member 55 away from the battery module, so that the operator can rotate the conductive member 55 conveniently.
[0074] By adopting the above technical solution, the operator can easily rotate the conductive member 55 by rotating the handle 54 and adjust the position of the conductive member 55 to ensure that its contact end is in close contact with the electrode part of the battery module.
[0075] In one embodiment of the present application, the rotating handle 54 is a cube, and the four side walls of the cube are provided with recessed portions for easy gripping.
[0076] Specifically, the rotating handle 54 is connected to an end of the conductive member 55 away from the battery cell module through the central hole, so that an operator can rotate the conductive member 55 by grasping the rotating handle 54 .
[0077] With the above technical solution, the rotating handle 54 is in a cube shape, has a large surface area, and is convenient for the operator to grasp and operate. The four side walls of the rotating handle 54 are provided with recessed parts, which further provides the convenience of grasping, so that the operator can control the rotating handle 54 more stably.
[0078] In an embodiment of the present application, the first vertical plate 10 , the second vertical plate 20 , and the connecting plate 30 are all made of insulating materials.
[0079] By adopting the above technical solution, the insulating material has good insulating properties and can effectively prevent leakage and interference of current. The first vertical plate 10, the second vertical plate 20 and the connecting plate 30 made of insulating material can effectively isolate the conductive member 55 and other metal parts, prevent accidental leakage and short circuit of current, and improve the safety and reliability of the circuit.
[0080] In an embodiment of the present application, the connecting column 51 , the first limiting plate 52 , and the second limiting plate 53 are all made of insulating materials.
[0081] By adopting the above technical solution, the insulating material has good insulating properties and can effectively prevent current leakage and interference. The connecting column 51, the first limiting plate 52 and the second limiting plate 53 made of insulating material can effectively isolate the conductive member 55 and other metal parts, prevent accidental leakage and short circuit of current, and improve the safety and reliability of the circuit.
[0082] In one embodiment of the present application, the first vertical plate 10 can be bent relative to the connection between the first vertical plate 10 and the connecting plate 30 to facilitate the placement of the battery cell module in the clamping space; a locking piece is also provided on one side of the first vertical plate 10, and when the first vertical plate 10 clamps the battery cell module, the first vertical plate 10 is locked to prevent the first vertical plate 10 from bending.
[0083] Specifically, the first vertical plate 10 can be bent relative to the connection between the vertical plate and the connecting plate 30, so that when the battery cell module is installed in the clamping space, the first vertical plate 10 can be bent, thereby facilitating the installation of the battery cell module. After the battery cell module is installed in place, the first vertical plate 10 is restored to its initial state. At this time, the first vertical plate 10 is locked by a locking member arranged on one side of the first vertical plate 10 to prevent the first vertical plate 10 from bending when it is working.
[0084] By adopting the above technical solution, the first vertical plate 10 has a bendable characteristic and can be bent relative to the connection of the connecting plate 30. It can facilitate the placement of the battery module in the clamping space, making the clamping process more flexible and convenient. The locking member can lock the first vertical plate 10 when clamping the battery module to prevent it from bending. The stability and reliability of the first vertical plate 10 during the clamping process can be ensured to avoid failure or damage caused by bending.
[0085] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A power battery module equalization pressure difference auxiliary tooling, characterized in that: include: First vertical board; A second vertical plate, arranged opposite to the first vertical plate; A connecting plate, a first side of which is connected to the first vertical plate, and a second side of which is arranged opposite to the first side is connected to the second vertical plate, so that a clamping space for clamping the battery cell module is provided between the first vertical plate and the second vertical plate; and At least two conductive modules are respectively connected to the first vertical plate and the second vertical plate, and can form an electrical circuit with the battery module located in the clamping space to perform charging and discharging operations on the battery module.
2. The power battery module equalization pressure difference auxiliary tooling according to claim 1, characterized in that: The first vertical plate and / or the second vertical plate are provided with a sliding groove for the conductive module to move.
3. The power battery module equalizing pressure difference auxiliary tooling according to claim 2, characterized in that: The sliding through groove is formed by at least two "cross" shaped through holes connected in series end to end.
4. The power battery module equalizing pressure difference auxiliary tooling according to claim 2 or 3, characterized in that: The conductive module comprises: A moving assembly connected to the sliding slot and capable of reciprocating along the length direction of the sliding slot; and The conductive member is threadably connected to the movable assembly and can rotate relative to the movable assembly so that the contact end of the conductive member abuts against the electrode portion of the battery module.
5. The power battery module equalizing pressure difference auxiliary tooling according to claim 4, characterized in that: The mobile assembly comprises: A connecting column, disposed in the sliding groove; A first limiting plate connected to the first end of the connecting column; The second limiting plate is connected to the second end of the connecting column, and the first limiting plate and the second limiting plate cooperate with each other to limit the connecting column from moving out of the sliding groove.
6. The power battery module equalizing pressure difference auxiliary tooling according to claim 4, characterized in that: The conductive module further comprises: The rotating handle is connected to an end of the conductive member away from the battery core module to facilitate the rotation of the conductive member.
7. The power battery module equalization pressure difference auxiliary tooling according to claim 6, characterized in that: The rotating handle is a cube, and four side walls of the cube are provided with recessed parts for easy gripping.
8. The power battery module equalization pressure difference auxiliary tooling according to claim 1, characterized in that: The first vertical plate, the second vertical plate, and the connecting plate are all made of insulating material.
9. The power battery module equalizing pressure difference auxiliary tooling according to claim 5, characterized in that: The connecting column, the first limiting plate and the second limiting plate are all made of insulating materials.
10. The power battery module equalization pressure difference auxiliary tooling according to claim 1, characterized in that: The first vertical plate can be bent relative to the connection between the first vertical plate and the connecting plate to facilitate the placement of the battery cell module in the clamping space; a locking piece is also provided on one side of the first vertical plate, and when the first vertical plate clamps the battery cell module, the first vertical plate is locked to prevent the first vertical plate from bending.