Novel battery module matched with snakelike liquid cooling plate

Abstract

The utility model discloses a novel battery module matched with a snake-shaped liquid cooling plate, which comprises an outer frame and an inner module, and insulating baffles are arranged on the front sides and the rear sides of the outer frame and the inner module; the outer frame comprises a pair of aluminum plates, the aluminum plates are distributed up and down, and the left and right sides of the aluminum plates are each provided with a pair of plastic supports; the inner module comprises a snakelike liquid cooling plate and a plurality of cylindrical battery cells; and the snakelike liquid cooling plate and the plurality of cylindrical battery cells are positioned in the outer frame. According to the utility model, the temperature difference of different cylindrical battery cells can be reduced, the consistency of the temperature of each cylindrical battery cell is kept, the capability of preventing the thermal runaway of the cylindrical battery cells is greatly improved, the service life of the battery module is prolonged, the strength is ensured while the weight of the battery module is reduced, the integration level is high, the disassembly is convenient, and the cost is low. And related parts can be independently maintained and replaced, and a whole battery cell does not need to be maintained, so that the product maintenance and after-sales cost is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery module technology, and in particular relates to a new battery module with a serpentine liquid cooling plate. Background Technology

[0002] A battery module is a battery system composed of multiple individual battery cells connected in a specific circuit configuration. It typically includes structural components, a heat dissipation system, and a monitoring and management system (such as a BMS, or Battery Management System). Battery modules can provide higher energy density, power, and flexibility, and are widely used in electric vehicles, energy storage devices, industrial equipment, and consumer electronics.

[0003] There are many types of battery modules on the market. For example, a battery module with publication number CN221530063U is disclosed on the patent website. This battery module can effectively improve the heat dissipation rate and the uniformity of cell temperature. However, there are some defects and shortcomings that need to be improved: (1) The battery module will generate a lot of heat when under high load or during rapid charging and discharging. If the thermal management design is not perfect, it is easy to cause the battery to overheat, degrade performance or even thermal runaway, thereby affecting the safety and life of the module. Although some existing battery modules have heat dissipation function, there is a temperature difference between different cells in the module, making it difficult to maintain the uniformity of cell temperature, which can easily lead to thermal runaway of the cell and thus affect the life of the battery module; (2) Due to structural design and material reasons, some existing battery modules are often large in size and weight, which limits the lightweighting and space utilization efficiency of the equipment, especially in applications such as electric vehicles; (3) Some existing battery modules have low integration, and related components are difficult to disassemble and repair. Once the battery is damaged due to thermal runaway, it is necessary to repair the entire cell, which increases the cost of product maintenance and after-sales service. Therefore, in response to the above problems, the new battery module with a serpentine liquid cooling plate provided by this utility model is of great significance. Utility Model Content

[0004] This invention provides a novel battery module equipped with a serpentine liquid cooling plate. The serpentine liquid cooling plate allows for batch cooling of multiple cylindrical cells, thereby reducing the temperature difference between different cylindrical cells within the inner module and maintaining temperature consistency among them. This significantly improves the ability to prevent thermal runaway of the cylindrical cells and effectively extends the service life of the battery module. The outer frame greatly increases the packing ratio of the battery module layers, thus reducing the weight of the battery module and extending its range. The plastic bracket further reduces the weight of the battery module, while the aluminum plate ensures its strength. The high integration of the outer frame facilitates disassembly. When thermal runaway damage occurs, individual components can be repaired and replaced without repairing the entire cell, effectively reducing product maintenance and after-sales costs. In summary, this invention solves the problems in the background technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model provides a new battery module with a serpentine liquid cooling plate, including an outer frame and an inner module, wherein insulating baffles are provided on the front and rear sides of the outer frame and the inner module.

[0007] The outer frame includes a pair of aluminum plates, which are arranged vertically, and a pair of plastic brackets are provided on both the left and right sides of the pair of aluminum plates.

[0008] The inner module includes a serpentine liquid cooling plate and several cylindrical battery cells, which are located inside the outer frame.

[0009] Furthermore, threaded holes are provided on the surfaces of both the pair of plastic brackets and the pair of aluminum plates, and they are fixed together with bolts to form a rectangular frame.

[0010] Furthermore, each of the cylindrical battery cells is attached to the surface of the serpentine liquid cooling plate, and the contact surfaces between each cylindrical battery cell and the serpentine liquid cooling plate are fixed with thermally conductive structural adhesive.

[0011] Furthermore, the serpentine liquid cooling plate is formed by bending a flat profile tube with multiple microchannels in its inner cavity, and one end of the serpentine liquid cooling plate is provided with two interfaces, one inlet and one outlet.

[0012] Furthermore, the surface of the aluminum plate is provided with several arc-shaped grooves, and a buffer pad is provided between each pair of aluminum plates and the outermost serpentine liquid cooling plate. The surface of the buffer pad is provided with several arc-shaped protrusions that cooperate with the arc-shaped grooves on the surface of the aluminum plate.

[0013] Furthermore, the insulating baffle is rectangular, and its length and width are equal to the length and width of the outer frame, respectively.

[0014] The present invention has the following advantages over the prior art:

[0015] (1) When using a new battery module with a serpentine liquid cooling plate, the serpentine liquid cooling plate can cool multiple cylindrical cells in batches, thereby reducing the temperature difference between different cylindrical cells in the inner module, maintaining the temperature consistency of each cylindrical cell, and thus greatly improving the ability to prevent thermal runaway of cylindrical cells and effectively extending the service life of the battery module.

[0016] (2) When using a new battery module with a serpentine liquid cooling plate, the outer frame greatly improves the assembly rate of the battery module layers, thereby reducing the weight of the battery module and extending the range. The plastic bracket can greatly reduce the weight of the battery module, while the aluminum plate ensures the strength of the battery module.

[0017] (3) When using the new battery module with a serpentine liquid cooling plate, the outer frame has a high degree of integration and is easy to disassemble. When the battery is damaged by thermal runaway, the relevant components can be repaired and replaced separately without repairing the entire cell, thereby effectively reducing the cost of product maintenance and after-sales service.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the external structure of a new battery module equipped with a serpentine liquid cooling plate according to the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a new battery module equipped with a serpentine liquid cooling plate according to the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the inner and outer frames of this utility model;

[0023] Figure 4 This is a schematic diagram of the aluminum plate structure in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the buffer pad in this utility model;

[0025] Figure 6This is a schematic diagram of the internal module in this utility model;

[0026] Figure 7 This is a schematic diagram of the serpentine liquid cooling plate in this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Insulating baffle; 2. Aluminum plate; 3. Plastic bracket; 4. Serpentine liquid cooling plate; 5. Cylindrical battery cell; 6. Interface; 7. Buffer pad. Detailed Implementation

[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Please see Figure 1-7 As shown, a new battery module with a serpentine liquid cooling plate according to the present invention includes an outer frame and an inner module, and insulating baffles 1 are provided on the front and rear sides of the outer frame and the inner module.

[0032] The outer frame includes a pair of aluminum plates 2, which are distributed vertically, and a pair of plastic brackets 3 are provided on both the left and right sides of the pair of aluminum plates 2.

[0033] The inner module includes a serpentine liquid cooling plate 4 and several cylindrical battery cells 5. The serpentine liquid cooling plate 4 and several cylindrical battery cells 5 are located inside the outer frame. The cylindrical battery cells 5 are selected from aircraft power batteries. Nylon with a certain proportion of glass fiber as raw materials can greatly help reduce weight while ensuring strength.

[0034] The surfaces of the pair of plastic brackets 3 and the pair of aluminum plates 2 are all provided with threaded holes and are fixed with bolts to form a rectangular frame. The plastic brackets 3 can greatly reduce the weight of the battery module, while the aluminum plates 2 ensure the strength of the battery module. The outer frame has a high degree of integration and is easy to disassemble. When the battery is damaged by thermal runaway, the relevant parts can be repaired and replaced individually without repairing the entire cell, thereby effectively reducing the cost of product maintenance and after-sales service.

[0035] The cylindrical battery cell 5 is attached to the surface of the serpentine liquid cooling plate 4, and the contact surface between the cylindrical battery cell 5 and the serpentine liquid cooling plate 4 is fixed by thermally conductive structural adhesive. The thermally conductive structural adhesive has strong thermal conductivity and can fully absorb the heat of each cylindrical battery cell 5 and transfer it to the surface of the serpentine liquid cooling plate 4, so as to accelerate the heat dissipation and cooling efficiency of the cylindrical battery cell 5.

[0036] The serpentine liquid cooling plate 4 is formed by bending a flat tube with multiple microchannels in its inner cavity. One end of the serpentine liquid cooling plate 4 has two ports 6, one inlet and one outlet. Coolant can be introduced into the inner cavity of the serpentine liquid cooling plate 4 through one port 6 and discharged through the other port 6, so that the coolant can circulate in the inner cavity of the serpentine liquid cooling plate 4. When each cylindrical cell 5 is attached to the surface of the serpentine liquid cooling plate 4, the coolant circulating in the inner cavity of the serpentine liquid cooling plate 4 can simultaneously make full contact with each cylindrical cell 5, so as to remove the surface heat of each cylindrical cell 5. This allows for batch cooling through the serpentine liquid cooling plate 4, reducing the temperature difference between different cylindrical cells 5 in the inner module, maintaining the temperature consistency of each cylindrical cell 5, and thus greatly improving the ability to prevent thermal runaway of the cylindrical cells 5, effectively extending the service life of the battery module.

[0037] The aluminum plate 2 has several arc-shaped grooves on its surface, and a buffer pad 7 is provided between each pair of aluminum plates 2 and the outermost serpentine liquid cooling plate 4. The surface of the buffer pad 7 has several arc-shaped protrusions that match the arc-shaped grooves on the surface of the aluminum plate 2. The buffer pad 7 is made of elastic materials such as CR foam. When the outer frame is installed outside the inner module, the upper and lower aluminum plates 2 will squeeze the serpentine liquid cooling plate 4 and the cylindrical battery cell 5. At this time, the buffer pad 7 can play a buffering and protective role to prevent the serpentine liquid cooling plate 4 and the cylindrical battery cell 5 from being damaged due to excessive squeezing force.

[0038] The insulating baffle 1 is rectangular, and its length and width correspond to the length and width of the outer frame, respectively. The insulating baffle 1 can be fixed to the front and rear faces of the outer frame by bolts and covers the front and rear sides of the entire inner module to provide insulation protection for the inner module.

[0039] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0040] All standard parts used in the application documents can be purchased from the market. All components in this application documents can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.

[0041] The working principle of this utility model is as follows:

[0042] In use, this utility model simplifies the battery module to consist of upper and lower aluminum plates 2 and left and right plastic brackets 3, which are then pressurized with cylindrical battery cells 5 and secured with bolts. This significantly improves the assembly rate of the battery module layers, thereby reducing the weight of the battery module and extending its range. The plastic brackets 3 greatly reduce the weight of the battery module, while the aluminum plates 2 ensure its strength. The outer frame has high integration and is easy to disassemble. When the battery suffers thermal runaway damage, individual components can be repaired and replaced without repairing the entire battery cell, thus effectively reducing product maintenance and after-sales costs. The cylindrical battery cells 5 are attached to the serpentine... The surface of the liquid cooling plate 4 allows coolant to be introduced into the inner cavity of the serpentine liquid cooling plate 4 through one of its interfaces 6 and discharged through the other interface 6, so that the coolant circulates within the inner cavity of the serpentine liquid cooling plate 4. The coolant circulating within the inner cavity of the serpentine liquid cooling plate 4 can simultaneously make full contact with each cylindrical cell 5, so as to remove the surface heat of each cylindrical cell 5. This allows for batch cooling through the serpentine liquid cooling plate 4, reducing the temperature difference between different cylindrical cells 5 in the inner module, maintaining the temperature consistency of each cylindrical cell 5, and thus greatly improving the ability to prevent thermal runaway of the cylindrical cells 5, effectively extending the service life of the battery module.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A new battery module with a serpentine liquid cooling plate, characterized in that, Including outer frame and inner module, the front side and the back side of the outer frame and the inner module are provided with insulation baffle (1); The outer frame includes a pair of aluminum plates (2), a pair of the aluminum plates (2) are distributed in upper and lower, and a pair of plastic supports (3) are arranged on the left and right sides of the pair of aluminum plates (2); The inner module includes a serpentine liquid cooling plate (4) and a plurality of cylindrical battery cells (5), the serpentine liquid cooling plate (4) and the plurality of cylindrical battery cells (5) are located in the inside of the outer frame.

2. The new battery module with a serpentine liquid cooling plate according to claim 1, characterized in that, A pair of the plastic supports (3) and a pair of the aluminum plates (2) are provided with threaded holes on the surfaces, and are fixed by bolts to form a rectangular frame.

3. The new battery module with a serpentine liquid cooling plate according to claim 1, wherein, The cylindrical battery cells (5) are attached to the surface of the serpentine liquid cooling plate (4), and the contact surface between the cylindrical battery cells (5) and the serpentine liquid cooling plate (4) is fixed by heat-conducting structural adhesive.

4. The new battery module with a serpentine liquid cooling plate according to claim 1, wherein, The serpentine liquid cooling plate (4) is bent from a profiled flat tube provided with a plurality of microchannels in the inner cavity, and one end of the serpentine liquid cooling plate (4) is provided with two interfaces (6) for inlet and outlet.

5. The new battery module with a serpentine liquid cooling plate according to claim 1, wherein, The surface of the aluminum plate (2) is provided with a plurality of arc-shaped grooves, and a pair of the aluminum plates (2) and the outermost serpentine liquid cooling plate (4) are both provided with a layer of buffer pad (7), and the surface of the buffer pad (7) is provided with a plurality of arc-shaped protrusions matched with the arc-shaped grooves on the surface of the aluminum plate (2).

6. The new battery module with a serpentine liquid cooling plate according to claim 1, wherein, The insulation baffle (1) is rectangular, and the length and width thereof correspond to and are equal to the length and width of the outer frame respectively.

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