Battery box body fixing structure
By designing the battery pack fixing structure, including the cover plate, the pack body, the top cover fixing bracket, and the thermally conductive silicone layer, the problems of poor battery module consistency and safety risks are solved, achieving a compact battery pack design and rapid heat dissipation, thereby improving battery safety and lifespan.
Patent Information
- Application Number
- CN202422767265.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Existing battery modules suffer from poor consistency, occupy a large internal space, and their side-mounted structure poses safety risks such as leakage and short circuits.
The structure includes a cover plate, a housing, a top cover fixing bracket, a first fixing strap, a second fixing strap, and a battery cell module. Combined with a thermally conductive silicone layer and a U-shaped spacer, it achieves secure fastening and rapid heat dissipation of the battery cell module.
It effectively reduces the overall size of the battery pack, ensures the consistency of module units during high-rate discharge, avoids the risk of leakage and short circuit, extends the service life of individual cells, and provides good heat dissipation.
Smart Images
Figure CN223539779U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery technology, and in particular relates to a battery box fixing structure. Background Technology
[0002] With the in-depth development of new energy industries such as energy storage, photovoltaics, and wind power, various new energy sources are integrating to form complementary energy stations. Complementary energy stations generally include wind power-storage power stations, photovoltaic power-storage power stations, and wind-solar-storage power stations.
[0003] With the vigorous development of new energy sources, the current of various new energy products is increasing, and the performance requirements for these products are also becoming more stringent. Currently, the UPS internal modules adopt an AB module structure, with copper busbars connecting the modules. During high-rate discharge, the consistency between modules can be affected. Furthermore, the modules occupy a relatively large internal space, resulting in a larger overall battery pack size. Due to height limitations, the battery pack can only be placed on its side, which introduces safety risks such as leakage and short circuits in the battery cells. Utility Model Content
[0004] The purpose of this utility model is to provide a battery box fixing structure to solve the technical problems of poor consistency of existing battery modules, large internal space occupation, side placement structure, and safety risks such as leakage and short circuit.
[0005] To achieve the above objectives, this utility model provides a battery box fixing structure, including a cover plate, a box body, a top cover fixing frame, a first fixing strap, a second fixing strap, and a battery cell module; the battery cell module is disposed inside the box body; the first fixing strap is sleeved on the upper part of the box body; the top cover fixing frame is disposed on the top of the battery cell module, and the top cover fixing frame is fixedly connected to the box body; the cover plate covers the top cover fixing frame, and a gap is provided between the cover plate and the top cover fixing frame; the second fixing strap is sleeved on the lower part of the box body.
[0006] In a preferred embodiment, a thermally conductive silicone layer is provided between the housing and the bottom surface of the battery cell module. The thermally conductive silicone layer is sleeved on the bottom of the battery cell module, and the thermally conductive silicone layer is respectively abutted against the bottom surface of the battery cell module and the bottom surface of the housing.
[0007] In a preferred embodiment, the housing includes a first end plate, a second end plate, a first side plate, a second side plate, and a bottom shell; the first side plate and the second side plate are respectively disposed on both sides of the bottom shell, and the first end plate and the second end plate are respectively disposed at both ends of the bottom shell; one end of the first side plate is fixedly connected to the first end plate, and the other end is connected to the second end plate; one end of the second side plate is fixedly connected to the first end plate, and the other end is connected to the second end plate.
[0008] In a preferred embodiment, the first end plate and the second end plate are arranged in parallel, and the first side plate and the second side plate are arranged in parallel.
[0009] In a preferred embodiment, the top cover fixing bracket is adapted to the end face of the top of the battery cell module.
[0010] In a preferred embodiment, the battery cell module includes multiple module units arranged in parallel; a first U-shaped spacer is provided between adjacent module units, between a module unit and the first end plate, and between a module unit and the second end plate.
[0011] In a preferred embodiment, the first U-shaped partition abuts against the module unit, the housing, and the thermally conductive silicone layer, respectively; the length of the first U-shaped partition is the same as the length of the module unit, and the height of the first U-shaped partition is the same as the height of the module unit.
[0012] In a preferred embodiment, the first U-shaped partition includes a first U-shaped mica sheet and a first phase change heat sink disposed in contact with each other, wherein the first U-shaped mica sheet is circumferentially disposed on the outer side of the first phase change heat sink.
[0013] In a preferred embodiment, each module unit includes several parallel battery cells; in the same module unit, a second U-shaped spacer is provided between adjacent battery cells.
[0014] In a preferred embodiment, each of the second U-shaped separators is disposed in contact with the adjacent first U-shaped separator and the silicone thermal conductive layer; each of the second U-shaped separators is disposed in contact with the adjacent battery cell.
[0015] In a preferred embodiment, the length of the second U-shaped separator is the same as the length of the battery cell, and the height of the second U-shaped separator is the same as the height of the battery cell.
[0016] In a preferred embodiment, the second U-shaped partition includes a second U-shaped mica sheet and a second phase change heat sink that are disposed in contact with each other, wherein the second U-shaped mica sheet is circumferentially disposed on the outer side of the second phase change heat sink.
[0017] The technical solution proposed in this utility model has the following beneficial effects: This application effectively secures the battery cell module using a first fixing strap, a top cover fixing bracket, and a second fixing strap, effectively reducing the internal space occupied by the securing mechanism. This reduces the overall size of the battery pack while maintaining the same capacity and ensuring the consistency of the module units during high-rate discharge. The structure of this application allows for upright placement, matching the structure of the individual battery cells and avoiding the risk of short circuits due to leakage. By setting a first and second U-shaped partition, the heat from the individual battery cells can be quickly transferred to the housing (aluminum alloy housing), achieving rapid and effective cooling of the battery cell module. Furthermore, in situations where the module space is compact and there is no effective airflow, this application combines a phase-change heat sink with a thermally conductive silicone layer (2mm thick, 1.5W thermal conductivity) to rapidly cool the individual battery cells (especially those located in the middle of the module), effectively extending their lifespan. This utility model has a simple structure, good heat dissipation, convenient disassembly and assembly, easy maintenance, good stability, and is economical, safe and practical, which can well meet the needs of actual use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the battery box fixing structure according to an embodiment of the present utility model;
[0019] Figure 2 for Figure 1 A partial structural diagram of the battery box fixing structure;
[0020] Figure 3 for Figure 2 An exploded structural diagram of the battery box fixing structure;
[0021] Figure 4 for Figure 2 A partial structural diagram of the battery box fixing structure. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0025] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0027] like Figures 1 to 4 As shown, this utility model embodiment provides a battery box fixing structure, including a cover plate 10, a box body 20, a top cover fixing frame 30, a first fixing strap 40, a second fixing strap 50, and a battery cell module 60; the battery cell module 60 is disposed inside the box body 20; the first fixing strap 40 is sleeved on the upper part of the box body 20; the top cover fixing frame 30 is disposed on the top of the battery cell module 60, and the top cover fixing frame 30 is fixedly connected to the box body 20; the cover plate 10 covers the top cover fixing frame 30, and a gap is provided between the cover plate 10 and the top cover fixing frame 30; the second fixing strap 50 is sleeved on the lower part of the box body 20.
[0028] This application effectively secures the battery cell module using a first fixing strap, a top cover fixing bracket, and a second fixing strap. This effectively reduces the internal space occupied by the securing, thus reducing the overall size of the battery pack for the same capacity. It also ensures the consistency of the module units during high-rate discharge and allows for upright placement, avoiding the risk of short circuits due to leakage.
[0029] In the structure of this application, the first fixing strap 40 and the second fixing strap 50 are disposed on the outside of the housing 20, rather than on the outside of the cell module 60, which can effectively reduce the internal space occupied by fastening, and also effectively ensure the consistency of the module units during high-rate discharge.
[0030] The top cover fixing bracket 30 effectively fixes the battery cell module 60 while facilitating the series and parallel connection between module units in the battery cell module, further reducing the internal space occupied by fastening and series and parallel connection, and also effectively ensuring the consistency of module units during high-rate discharge.
[0031] In a preferred embodiment, a thermally conductive silicone layer 70 is provided between the housing 20 and the bottom surface of the battery cell module 60. The thermally conductive silicone layer 70 is sleeved on the bottom of the battery cell module 60, and the thermally conductive silicone layer 70 is respectively abutted against the bottom surface of the battery cell module 60 and the bottom surface of the housing 20.
[0032] In a preferred embodiment, the housing 20 includes a first end plate 21, a second end plate 22, a first side plate 23, a second side plate 24, and a bottom shell 25; the first side plate 23 and the second side plate 24 are respectively disposed on both sides of the bottom shell 25, and the first end plate 21 and the second end plate 22 are respectively disposed at both ends of the bottom shell 25; one end of the first side plate 23 is fixedly connected to the first end plate 21, and the other end is connected to the second end plate 22; one end of the second side plate 24 is fixedly connected to the first end plate 21, and the other end is connected to the second end plate 22.
[0033] In a preferred embodiment, the first end plate 21 and the second end plate 22 are arranged in parallel, and the first side plate 23 and the second side plate 24 are arranged in parallel.
[0034] In a preferred embodiment, the top cover fixing bracket 30 is adapted to the end face of the top of the battery cell module 60.
[0035] In a preferred embodiment, the battery cell module 60 includes a plurality of module units 61 arranged in parallel; a first U-shaped spacer 80 is provided between adjacent module units 61, between a module unit 61 and the first end plate 21, and between a module unit 61 and the second end plate 22.
[0036] In a preferred embodiment, the first U-shaped partition 80 abuts against the module unit 61, the housing 20, and the thermally conductive silicone layer 70, respectively. The length of the first U-shaped partition 80 is the same as the length of the module unit 61, and the height of the first U-shaped partition 80 is the same as the height of the module unit 61. In situations where the module space is compact and no effective airflow is formed, combining the phase change heat sink with the thermally conductive silicone layer (2mm thick, 1.5W thermal conductivity) allows for rapid cooling of individual battery cells (especially those located in the middle of the module), thereby effectively extending the lifespan of the individual battery cells.
[0037] As a preferred embodiment, such as Figure 4 As shown, the first U-shaped spacer 80 includes a first U-shaped mica sheet 81 and a first phase change heat sink 82 that are disposed in contact with each other. The first U-shaped mica sheet 81 is circumferentially disposed on the outer side of the first phase change heat sink 82. This effectively ensures insulation while also enabling rapid cooling of individual battery cells (especially those located in the middle of the module). The U-shaped mica sheet provides insulation; when the temperature of the module unit reaches 37°C during discharge, the phase change heat sink begins to absorb heat from the module unit, slowing down the temperature rise during high-rate discharge and keeping the module unit temperature below 50°C.
[0038] In a preferred embodiment, each module unit 61 includes several parallel battery cells 611; within the same module unit 61, a second U-shaped spacer 90 is provided between adjacent battery cells 611. This effectively ensures insulation and further guarantees rapid cooling of the battery cells (especially those located in the middle of the module). The outer shell of the battery cell 611 is made of plastic, providing good insulation and ensuring safety and reliability.
[0039] In a preferred embodiment, each of the second U-shaped spacers 90 is in contact with the adjacent first U-shaped spacer 80 and the thermally conductive silicone layer 70; each of the second U-shaped spacers 90 is in contact with the adjacent individual battery cell 611. This effectively ensures the insulation of the battery cell module and further guarantees the rapid cooling of the individual battery cells (especially those located in the middle of the module).
[0040] In a preferred embodiment, the length of the second U-shaped separator 90 is the same as the length of the battery cell 611, and the height of the second U-shaped separator 90 is the same as the height of the battery cell 611.
[0041] As a preferred embodiment, such as Figure 4As shown, the second U-shaped spacer 90 includes a second U-shaped mica sheet 91 and a second phase change heat sink 92 that are disposed in contact with each other. The second U-shaped mica sheet 91 is circumferentially disposed on the outer side of the second phase change heat sink 92. The U-shaped mica sheet serves as insulation; when the temperature of a single cell reaches 37°C during discharge, the phase change heat sink begins to absorb heat from the single cell, slowing down the temperature rise of the single cell during high-rate discharge and keeping the temperature of the single cell below 50°C.
[0042] This application, by setting a thermally conductive silicone layer, a first U-shaped partition, and a second U-shaped partition, enables the heat of the individual battery cells to be quickly transferred to the housing (aluminum alloy housing), thereby achieving the purpose of rapid and effective cooling of the battery cell module, which can well meet the needs of actual use.
[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A battery box fixing structure, characterized in that, The device includes a cover plate, a housing, a top cover fixing frame, a first fixing strap, a second fixing strap, and a battery cell module. The battery cell module is disposed inside the housing. The first fixing strap is sleeved on the upper part of the housing. The top cover fixing frame is disposed on the top of the battery cell module and is fixedly connected to the housing. The cover plate is closed on the top cover fixing frame, and a gap is provided between the cover plate and the top cover fixing frame. The second fixing strap is sleeved on the lower part of the housing.
2. The battery box fixing structure according to claim 1, characterized in that, A thermally conductive silicone layer is provided between the housing and the bottom surface of the battery cell module. The thermally conductive silicone layer is sleeved on the bottom of the battery cell module and abuts against the bottom surface of the battery cell module and the bottom surface of the housing, respectively.
3. The battery box fixing structure according to claim 2, characterized in that, The housing includes a first end plate, a second end plate, a first side plate, a second side plate, and a bottom shell; the first side plate and the second side plate are respectively disposed on both sides of the bottom shell, and the first end plate and the second end plate are respectively disposed at both ends of the bottom shell; one end of the first side plate is fixedly connected to the first end plate, and the other end is connected to the second end plate; one end of the second side plate is fixedly connected to the first end plate, and the other end is connected to the second end plate; the first end plate and the second end plate are arranged parallel to each other, and the first side plate and the second side plate are arranged parallel to each other.
4. The battery box fixing structure according to claim 3, characterized in that, The top cover fixing frame is adapted to the end face of the top of the battery cell module; The battery cell module includes multiple module units arranged in parallel; a first U-shaped spacer is provided between adjacent module units, between a module unit and the first end plate, and between a module unit and the second end plate.
5. The battery box fixing structure according to claim 4, characterized in that, The first U-shaped partition abuts against the module unit, the housing, and the thermally conductive silicone layer respectively; the length of the first U-shaped partition is the same as the length of the module unit, and the height of the first U-shaped partition is the same as the height of the module unit.
6. The battery box fixing structure according to claim 4, characterized in that, The first U-shaped partition includes a first U-shaped mica sheet and a first phase change heat sink that are disposed in contact with each other, and the first U-shaped mica sheet is circumferentially disposed on the outside of the first phase change heat sink.
7. The battery box fixing structure according to claim 4, characterized in that, Each module unit includes several parallel battery cells; within the same module unit, a second U-shaped spacer is provided between adjacent battery cells.
8. The battery box fixing structure according to claim 7, characterized in that, Each of the second U-shaped spacers is in contact with the adjacent first U-shaped spacer and the thermally conductive silicone layer; each of the second U-shaped spacers is in contact with the adjacent battery cell.
9. The battery box fixing structure according to claim 7, characterized in that, The length of the second U-shaped separator is the same as the length of the battery cell, and the height of the second U-shaped separator is the same as the height of the battery cell. The second U-shaped partition includes a second U-shaped mica sheet and a second phase change heat sink that are abutted together, with the second U-shaped mica sheet circumferentially disposed on the outer side of the second phase change heat sink.