A battery module grouping structure and installation method thereof

Abstract

The present invention belongs to the technical field of battery modules. Specifically, the present invention relates to a battery module grouping structure and an installation method thereof. A square battery module grouping structure comprises a support plate and a battery, wherein a cooling mechanism is arranged on the support plate, and the battery is arranged in the cooling mechanism. The battery grouping structure saves materials, thereby saving costs. By fixing the battery group and the first liquid cooling plate and the second liquid cooling plate, the structure is firm and not easy to break or damage, thereby improving the stability of the structure. The first liquid cooling plate and the second liquid cooling plate are used to fully contact the heating surface of the battery with the thermal conductive rubber sheet, so that the battery and the first liquid cooling plate and the second liquid cooling plate can efficiently exchange heat, thereby improving the thermal conductivity of the battery, greatly improving the cooling efficiency and ensuring the temperature stability of the battery. The present invention also provides an installation method for the battery module grouping structure, which is convenient for operators to use and improves production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery modules, and in particular, relates to a battery module grouping structure and an installation method thereof. Background Art

[0002] A battery module is a battery system composed of multiple battery cells connected in series or in parallel. Its main purpose is to increase the voltage and capacity of the battery system to meet the needs of specific applications. Traditional welding technology has gradually been replaced by more efficient and reliable connection methods, such as laser welding, ultrasonic welding and bolting. These technologies can provide lower resistance, higher mechanical strength and better thermal stability; as the energy density of batteries increases, thermal management becomes increasingly important. Liquid cooling technology is one of the most widely used thermal management solutions. By integrating a liquid cooling plate in the battery module, heat can be efficiently removed from the battery. In addition, thermoelectric materials and phase change materials are also gradually used in the thermal management of battery modules to improve the thermal response speed and efficiency of the system.

[0003] At present, the electric vehicle industry is developing rapidly and will gradually replace fuel vehicles in the future. In order to improve the energy density of electric vehicle power batteries, power battery monomer structure design optimization, lightweight, and space saving have become the focus of technology development. Figure 2 and Figure 3 As shown, the power battery modules are connected in series and parallel to form small modules or large modules to form a battery pack. As there are more modules, the corresponding module materials are also more, the cost increases, and the module weight also increases a lot, which does not help to improve the energy density of the whole pack. In order to solve such problems, a battery module grouping method is provided. Summary of the invention

[0004] The present invention is made to solve the above problems, and aims to provide a battery module grouping structure and installation method thereof to solve the problems of the existing battery module PACK with many material types, high cost, complex process, heavy weight and low energy density. In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A battery module grouping structure comprises a support plate and a battery. A cooling mechanism is arranged on the support plate, and the battery is arranged in the cooling mechanism.

[0006] The cooling mechanism includes a first liquid cooling plate, the first liquid cooling plate is arranged on a supporting plate, the first liquid cooling plate is connected to a second liquid cooling plate, a thermal conductive film is arranged on one side of the second liquid cooling plate, one end of the thermal conductive film is connected to a battery, and the other end of the thermal conductive film is connected to the first liquid cooling plate and the second liquid cooling plate.

[0007] A protective cover plate is provided at the upper end of the battery, limit plates are provided at both ends of the support plate, and fixed plates are provided at both ends of the first liquid cooling plate. One end of the fixed plate abuts against the limit plate, and the other end of the fixed plate abuts against the first liquid cooling plate.

[0008] The thermally conductive film includes a first film, and bent films extend from both ends of the first film, and the bent films abut against the second liquid cooling plate.

[0009] The second liquid cooling plates are arranged on the first liquid cooling plate at equal intervals.

[0010] The first liquid cooling plate and the second liquid cooling plate are integrally formed structures, and the support plate and the limiting plate are integrally formed structures.

[0011] The two sides of the support plate are connected with connecting plates, and the connecting plates are provided with threaded holes.

[0012] The connecting plates are arranged at equal intervals, and a buffer foam is arranged between the supporting plate and the first liquid cooling plate.

[0013] A method for installing a battery module group structure comprises the following steps:

[0014] Step 101, lay the support plate flat, and place the fixing plate against the limiting plate;

[0015] Step 102, placing the buffer foam, and then installing the first liquid cooling plate;

[0016] Step 103, installing thermal conductive film and battery;

[0017] Step 104, installing a protective cover.

[0018] The technical effects of the present invention are as follows: the battery grouping structure of the present invention saves excessive module PACK materials, thereby saving PACK costs, reducing module weight, and improving module energy density, while also reducing the complexity of the module manufacturing process and improving production efficiency; by fixing the battery group and the first liquid cooling plate and the second liquid cooling plate, the structure is firm and not easy to break or damage, thereby improving the stability of the structure; the heating surface of the battery is fully in contact with the thermal conductive rubber sheet through the first liquid cooling plate and the second liquid cooling plate, so that heat can be efficiently exchanged with the first liquid cooling plate and the second liquid cooling plate, thereby improving the thermal conductivity of the battery, greatly improving the cooling or heating efficiency and ensuring the uniformity of the battery temperature, reducing the battery temperature difference, and effectively ensuring the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] This specification includes the following drawings, which show the following contents:

[0020] Figure 1 This is an overall structural diagram of a battery module group structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the prior art structure;

[0022] Figure 3 It is a schematic diagram of the prior art structure.

[0023] Marked in the figure are: 1. Support plate; 2. Cooling mechanism; 201. First liquid cooling plate; 202. Thermal conductive film; 203. Second liquid cooling plate; 204. First film; 205. Bending film; 3. Battery; 4. Protective cover; 5. Limiting plate; 6. Fixing plate; 7. Connecting plate; 8. Threaded hole; 9. Buffer foam. DETAILED DESCRIPTION

[0024] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0025] like Figure 1 As shown, a battery module group structure includes a support plate 1 and a battery 3. A cooling mechanism 2 is arranged on the support plate 1, and the battery 3 is arranged in the cooling mechanism 2. The support plate 1 is the basis of the entire structure. The support plate 1 has sufficient mechanical strength and stability. The battery 3 will not be displaced or deformed. The cooling mechanism 2 can quickly discharge the heat generated by the battery 3 to maintain the temperature of the battery 3 at a normal temperature.

[0026] The cooling mechanism 2 includes a first liquid cooling plate 201, which is arranged on the support plate 1, and a second liquid cooling plate 203 is connected to the first liquid cooling plate 201. A thermal conductive film 202 is arranged on one side of the second liquid cooling plate 203, one end of the thermal conductive film 202 is connected to the battery 3, and the other end of the thermal conductive film 202 is connected to the first liquid cooling plate 201 and the second liquid cooling plate 203. The first liquid cooling plate 201 and the second liquid cooling plate 203 are connected to the support plate 1 by bolts; the first liquid cooling plate 201 is a square flat plate, and the second liquid cooling plate 203 is arranged on the first liquid cooling plate 201. A small chamber is formed between the adjacent second liquid cooling plates 203 on the first liquid cooling plate 201, and the battery 3 can be placed in the small chamber, so that a battery group 3 is formed. Through the composition of the battery group 3, the large heating surface of the battery 3 can be fully in contact with the first liquid cooling plate 201 and the second liquid cooling plate 203, so that heat exchange can be carried out efficiently, the thermal conductivity of the battery is improved, and the cooling efficiency is greatly improved; or the heating efficiency and the stability of the battery temperature are ensured, the temperature difference of the battery is reduced, and the service life of the battery is effectively guaranteed. The battery 3 is composed of battery cells, and the battery cells are fixed by aerogel and then the battery cells are stacked and placed in the small chamber. The battery cells are combined with the aerogel

[0027] The efficiency of battery cell stacking is improved, the insulation between battery cells is ensured, and the reliability of the module is guaranteed. Under the coordinated cooperation of the first liquid cooling plate 201, the second liquid cooling plate 203 and the thermal conductive film 202, the battery 3 can be cooled fastest and best.

[0028] A protective cover plate 4 is provided at the upper end of the battery 3, a limiting plate 5 is provided at both ends of the support plate 1, and a fixing plate 6 is provided at both ends of the first liquid cooling plate 201, one end of the fixing plate 6 abuts against the limiting plate 5, and the other end of the fixing plate 6 abuts against the first liquid cooling plate 201. The limiting plate 5 is used to limit the movement of the fixing plate 6, and the fixing plate 6 limits and fixes the first liquid cooling plate 201, the second liquid cooling plate 203 and the battery 3 to ensure that the battery will not be displaced. The protective cover plate 4 is set to a square structure, and the protective cover plate 4 protects the battery to prevent the battery 3 from being damaged.

[0029] The thermally conductive film 202 includes a first film 204, and bent films 205 extend from both ends of the first film 204, and the bent films 205 abut against the second liquid cold plate 203. The special design of the thermally conductive film 202 structure can fully contact and fix the bottom of the battery 3 with the first liquid cold plate 201, and fully contact and fix the side of the battery 3 with the second liquid cold plate 203. The thermally conductive film 202 is made of a high thermal conductivity material, one end of which is connected to the battery 3, and the other end is connected to the first liquid cold plate 201 and the second liquid cold plate 203, ensuring that heat can be quickly transferred from the battery 3 to the first liquid cold plate 201 and the second liquid cold plate 203, and the heat is quickly taken away, ensuring that the battery 3 can maintain a suitable temperature under any working conditions.

[0030] The second liquid cooling plates 203 are arranged at equal intervals on the first liquid cooling plate 201. The size of each small chamber is ensured to be the same, which can better match the geometric shape of the battery 3. At the same time, the space between each second liquid cooling plate 203 forms a small chamber, and each small chamber can be placed in a battery 3, which greatly improves the energy density of the module, and also reduces the complexity of the module manufacturing process and improves production efficiency;

[0031] The first liquid cooling plate 201 and the second liquid cooling plate 203 are integrally formed structures, and the support plate 1 and the limit plate 5 are integrally formed structures. The first liquid cooling plate 201 and the second liquid cooling plate 203 are integrally formed structures, which can make the connection between the first liquid cooling plate 201 and the second liquid cooling plate 203 more stable and stronger. The support plate 1 and the limit plate 5 are integrally formed structures, which can make the connection between the support plate 1 and the limit plate 5 more stable and stronger.

[0032] The support plate 1 is connected to connecting plates 7 on both sides, and threaded holes 8 are formed on the connecting plates 7. The connecting plates 7 are semicircular structures, which can prevent sharp structures from causing harm to operators and protect operators. The connecting plates 7 are provided to fix the support plate 1 to prevent the support plate 1 from being displaced during use, which affects the use.

[0033] The connecting plates 7 are arranged at equal intervals, and a buffer foam 9 is arranged between the support plate 1 and the first liquid cooling plate 201. The buffer foam 9 can reduce shock on one hand, and reserve a certain breathing space for the battery 3 on the other hand, and also provide space for the thermal expansion between the first liquid cooling plate 201 and the support plate 1, thereby preventing structural stress caused by thermal expansion and contraction, protecting the battery 3, and extending the service life of the battery 3.

[0034] A method for installing a battery module group structure comprises the following steps:

[0035] Step 101, lay the support plate 1 flat, place the fixing plate 6 against the limiting plate 5, and fix the fixing plate 6;

[0036] Step 102, placing the buffer foam 9, with both ends of the buffer foam 9 abutting against the fixing plate 6, and then installing the first liquid cooling plate 201, and fixing the first liquid cooling plate 201 on the supporting plate 1 by bolts;

[0037] Step 103, installing the thermal conductive film 202 and the battery 3; placing the thermal conductive film 202 in the small compartment, combining the battery cells with aerogel to form a battery 3, and placing them in each small compartment;

[0038] Step 104, installing the protective cover 4; using the protective cover 4 to protect the battery can prevent the battery 3 from being damaged.

[0039] Functions and Effects of the Embodiments

[0040] The second liquid cooling plates 203 are arranged at equal intervals on the first liquid cooling plate 201, and a small chamber is formed between the adjacent second liquid cooling plates 203 on the first liquid cooling plate 201, and the battery 3 can be placed in the small chamber, thus forming a battery group 3. Through the composition of the battery group 3, the large heating surface of the battery 3 can be fully in contact with the first liquid cooling plate 201 and the second liquid cooling plate 203, so that heat exchange can be carried out efficiently, the thermal conductivity of the battery is improved, and the cooling efficiency is greatly improved; or the heating efficiency and the battery temperature are ensured to be stable, the battery temperature difference is reduced, and the service life of the battery is effectively guaranteed. The battery 3 is composed of battery cells, which are fixed by aerogel and then stacked and placed in the small chamber. The battery cells are combined with aerogel to improve the battery cell stacking efficiency, ensure the insulation between the battery cells, and ensure the reliability of the module; a buffer foam 9 is arranged between the support plate 1 and the first liquid cooling plate 201. The setting of the buffer foam 9 can reduce shock on the one hand, and reserve a certain breathing space for the battery 3 on the other hand, and also provide space for thermal expansion between the first liquid cooling plate 201 and the support plate 1, thereby preventing structural stress caused by thermal expansion and contraction, protecting the battery 3, and extending the service life of the battery 3.

[0041] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A battery module grouping structure, characterized in that: It comprises a support plate (1) and a battery (3); a cooling mechanism (2) is arranged on the support plate (1), and the battery (3) is arranged in the cooling mechanism (2).

2. The battery module grouping structure according to claim 1, characterized in that: The cooling mechanism (2) comprises a first liquid cooling plate (201), the first liquid cooling plate (201) being arranged on a support plate (1), the first liquid cooling plate (201) being connected to a second liquid cooling plate (203), a heat conductive film (202) being arranged on one side of the second liquid cooling plate (203), one end of the heat conductive film (202) being connected to a battery (3), and the other end of the heat conductive film (202) being connected to the first liquid cooling plate (201) and the second liquid cooling plate (203).

3. The battery module grouping structure according to claim 2, characterized in that: A protective cover plate (4) is provided at the upper end of the battery (3), limiting plates (5) are provided at both ends of the support plate (1), and fixing plates (6) are provided at both ends of the first liquid cooling plate (201), one end of the fixing plate (6) abuts against the limiting plate (5), and the other end of the fixing plate (6) abuts against the first liquid cooling plate (201).

4. The battery module grouping structure according to claim 2, characterized in that: The thermally conductive rubber sheet (202) comprises a first rubber sheet (204), with bent rubber sheets (205) extending from both ends of the first rubber sheet (204), and the bent rubber sheets (205) abutting against the second liquid cooling plate (203).

5. The battery module grouping structure according to claim 2, characterized in that: The second liquid cooling plates (203) are arranged at equal intervals on the first liquid cooling plate (201).

6. The grouping structure of a square battery module according to claim 3, characterized in that: The first liquid cooling plate (201) and the second liquid cooling plate (203) are integrally formed structures, and the support plate (1) and the limiting plate (5) are integrally formed structures.

7. The battery module grouping structure according to claim 1, characterized in that: The support plate (1) is connected to connecting plates (7) on both sides, and the connecting plates (7) are provided with threaded holes (8).

8. The battery module grouping structure according to claim 7, characterized in that: The connecting plates (7) are arranged at equal intervals, and a buffer foam (9) is arranged between the support plate (1) and the first liquid cooling plate (201).

9. A method for installing a battery module group structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 101, lay the support plate (1) flat, and place the fixing plate (6) and the limiting plate (5) against each other; Step 102, placing the buffer foam (9), and then installing the first liquid cooling plate (201); Step 103, installing the thermal conductive film (202) and the battery (3); Step 104, installing the protective cover (4).

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