Reinforcing structure of square shell large module
By designing the reinforced structure of the square shell large module in the battery system module, including battery cell stack, tie straps, fixing plates, limit blocks and limit slots, the problem of the fixing plate falling when the battery cell length is too long is solved. Improves the structural strength and safety of the module.
Patent Information
- Application Number
- CN202323598526.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-28
AI Technical Summary
When the battery cell length of the existing battery system module structure is too long, the intermediate fixed plate is prone to fall, resulting in insufficient strength of the module structure, which may cause safety problems such as divergence.
Design a reinforced structure of a square shell large module, including a battery cell stack, tie tie, fixing plate, limit block and limit slot. By tying tied around the battery cell stack, the fixing plate enhances structural strength in the middle position, and the limiting block and limiting groove are used to fix the tied belt and fixing plate to ensure that the fixing plate does not fall during lifting.
By setting up limit blocks and limit slots, the fixing plate and the binding strap are fixed together, which avoids falling of the fixing plate, improves the overall strength of the module, and prevents safety issues such as the disintegration of the module.
Smart Images
Figure CN222463302U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of lithium ion batteries, in particular to a reinforcement structure of a large square shell module. Background Art
[0002] Energy storage batteries are usually composed of multiple battery system module structures. The battery system module structure includes multiple battery cells, module fixing ties, double-sided tape, end plates, etc. The existing battery system module structure is usually formed by binding multiple battery cells together with fixing ties.
[0003] When the length of an existing battery cell module is too long, a fixed plate is added in the middle of the long module to increase the structural strength of the module. However, there is no structural connection between the fixed steel belt of the module and the middle end plate. During lifting, the fixed plate in the middle of the battery cell may fall down, and even cause safety problems such as the module falling apart due to insufficient strength.
[0004] To this end, we propose a reinforced structure of a large square shell module to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes a reinforcement structure for a large square shell module.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A reinforcement structure of a large square shell module comprises a battery cell stack and a binding strap, wherein at least one binding strap is arranged around the outer periphery of the battery cell stack, a fixing plate is arranged in the middle of the battery cell stack, a limiting block is arranged on one side of the binding strap, and at least one limiting groove is arranged on the limiting block.
[0008] Further preferably, the cross section of the limiting block is in a convex shape, and the limiting groove is circular and embedded in the limiting block.
[0009] Further preferably, the limit blocks are all arranged on one side of the fixing plate.
[0010] Further preferably, the limiting block is fixedly connected to the fixing plate by bolts passing through the limiting grooves.
[0011] Further preferably, the battery cell stack includes a plurality of single battery cells, and the plurality of single battery cells are fixed by binding bands to form a battery cell stack.
[0012] Further preferably, end plates are provided on both sides of the battery cell stack, and the end plates are fixed to the battery cell stack by binding bands.
[0013] Further preferably, a connecting piece is provided at the top of each of the plurality of single battery cells, and the connecting piece is fixed to the single battery cell by welding.
[0014] Further preferably, an output pole is provided above the end plate, and a bolt hole is provided on the output pole.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] In the utility model, a limiting block is provided, which can fix the fixing block and the binding belt together and limit the binding belt. The limiting block can be fixed with screws through the limiting groove, so that the fixing plate in the middle of the battery cell will not fall down during lifting, and safety problems such as module falling apart will not be caused due to insufficient strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the structure of a battery cell pair provided by the utility model;
[0018] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;
[0019] Figure 3 for Figure 1 Enlarged structural diagram at B in the middle.
[0020] In the figure: 1. battery cell stack; 2. single battery cell; 3. end plate; 4. binding strap; 5. fixing plate; 6. connecting piece; 7. limit block; 8. limit groove; 9. output pole; 10. bolt hole. DETAILED DESCRIPTION
[0021] Reference Figure 1-Figure 3 A reinforcement structure of a large square shell module includes a battery stack 1 and a binding belt 4. At least one binding belt 4 is arranged around the outer periphery of the battery stack 1. The binding belt 4 is preferably made of high temperature resistant material, preferably polyethylene or metal. The battery stack 1 will generate a lot of heat during use. The high temperature resistant material can effectively increase the service life of the binding belt 4. At the same time, different numbers of binding belts 4 can be selected according to the size of the battery stack 1. Preferably, two binding belts 4 are used. The two binding belts 4 can stably fix the battery stack 1 without taking up too much space.
[0022] A fixing plate 5 is provided in the middle of the battery stack 1. The fixing plate 5 can be fixed in the middle of the battery stack 1, which can effectively improve the strength of the middle part of the battery stack 1. When the battery stack 1 is hoisted, the overall strength of the battery stack 1 can be effectively improved. At the same time, the middle part of the battery stack 1 can be limited to prevent the battery stack 1 from deformation.
[0023] A limit block 7 is provided on one side of the binding belt 4, and at least one limit groove 8 is provided on the limit block 7. By setting the limit block 7, the limit block 7 can fix the fixing block and the binding belt 4 together and limit the binding belt 4. The limit block 7 can be fixed with screws through the limit groove 8, so that the fixing plate 5 in the middle of the battery cell will not fall during lifting, and there will be no safety problems such as module falling apart due to insufficient strength.
[0024] The cross-section of the limit block 7 is in a convex shape, and the convex-shaped limit block 7 has good stability, so that the limit block 7 can stably limit and fix the binding strap 4 and the fixing plate 5 on one side of the binding strap 4 and the fixing plate 5, which can improve the stability. The limit groove 8 is circular, and the circular limit groove 8 can be easily fixed with screws. The limit groove 8 is embedded in the limit block 7, so that the screws can be embedded in the limit block 7, which can reduce the space occupied by the screws and improve space utilization.
[0025] The limit blocks 7 are all arranged on one side of the fixed plate 5. The installation steps of the fixed plate 5, the binding belt 4 and the limit block 7 are as follows: first install the fixed plate 5 in the middle position of the battery cell stack 1, bond it with the thermal conductive structural adhesive, then wrap the binding belt 4 around and bind it on the outside of the battery cell stack 1, and finally limit and fix the fixed plate 5 and the binding belt 4 through the limit block 7, and the limit block 7 is fixedly connected to the fixed plate 5 by screws passing through the limit groove 8.
[0026] The battery cell stack 1 includes multiple single cells 2, which can be hard shell cells or soft package cells. The multiple single cells 2 are fixed by binding tapes 4 to form the battery cell stack 1. The multiple single cells 2 are arranged in a regular sequence, and every two adjacent single cells 2 are bonded by thermal conductive structural adhesive.
[0027] End plates 3 are provided on both sides of the battery cell stack 1, and the end plates 3 can realize the limiting and fixing function on both sides of the battery cell stack 1. When the battery cell stack 1 is hoisted, the overall stability of the battery cell stack 1 can be improved, and the battery cell stack 1 can be prevented from falling apart due to the external force generated by the hoisting; connecting plates 6 are provided on the tops of multiple single battery cells 2, and the connecting plates 6 are fixed to the single battery cells 2 by welding. The connecting plates 6 will connect adjacent single battery cells 2 and limit and fix them at the tops of the single battery cells 2.
[0028] An output pole 9 is provided above the end plate 3. The output pole 9 is respectively connected to the connecting plate 6 and the external output end to realize the function of power output and input. A bolt hole 10 is provided on the output pole 9. The output pole 9 is fixed to the end plate 3 through the bolt hole 10. The output pole 9 connects the end plate 3 and the single battery cell 2, which can effectively improve stability.
Claims
1. A reinforcement structure of a large square shell module, comprising a battery cell stack and a binding belt, wherein at least one binding belt is arranged around the outer periphery of the battery cell stack, characterized in that: A fixing plate is provided in the middle of the battery cell stack, and a limiting block is provided on one side of each binding belt, and at least one limiting groove is provided on the limiting block.
2. The reinforcement structure of a large square shell module according to claim 1 is characterized in that: The cross section of the limiting block is in a convex shape, and the limiting groove is circular and embedded in the limiting block.
3. The reinforcement structure of a large square shell module according to claim 1 is characterized in that: The limit blocks are all arranged on one side of the fixing plate.
4. The reinforcement structure of a large square shell module according to claim 1 is characterized in that: The limiting block is fixedly connected to the fixing plate by bolts passing through the limiting groove.
5. The reinforcement structure of a large square shell module according to claim 1 is characterized in that: The battery cell stack includes a plurality of single battery cells, and the plurality of single battery cells are fixed by binding bands to form a battery cell stack.
6. The reinforcement structure of a large square shell module according to claim 1, characterized in that: End plates are provided on both sides of the battery cell stack, and the end plates are fixed to the battery cell stack by binding belts.
7. The reinforcement structure of a large square shell module according to claim 5, characterized in that: A connecting piece is provided at the top of each of the plurality of single battery cells, and the connecting piece is fixed to the single battery cell by welding.
8. The reinforcement structure of a large square shell module according to claim 6, characterized in that: An output pole is arranged above the end plate, and a bolt hole is arranged on the output pole.