Box structure and battery module

Abstract

The utility model discloses a box body structure and a battery module, and relates to the technical field of batteries, the box body structure comprises a box body, a sealing cover piece and a temperature adjusting structure, a plurality of battery accommodating grooves arranged at intervals are formed in the box body; the sealing cover part covers the opening of the box body, a plurality of battery limiting grooves which are arranged at intervals are formed in the side, facing the box body, of the sealing cover part, each battery limiting groove and the corresponding battery containing groove are enclosed to form a battery containing cavity, and the battery containing cavities are used for containing single batteries; the temperature adjusting structure comprises a plurality of flow guide pipes, each flow guide pipe is communicated with at least another flow guide pipe to form a flow guide channel, one end of the flow guide channel is used for being communicated with the liquid inlet connector, and the other end of the flow guide channel is used for being communicated with the liquid outlet connector; according to the technical scheme provided by the utility model, the heat dissipation efficiency can be improved. Besides, when necessary, high-temperature fluid can be guided to flow through the flow guide channel to achieve heating, so that the box body structure has good temperature adjusting capacity, and heat dissipation and heating can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a housing structure and a battery module. Background Technology

[0002] With the rapid development of new energy technologies, battery modules, as core components for energy storage and conversion, have been widely used in electric vehicles, energy storage systems, and other fields. The performance and lifespan of battery modules are directly affected by their operating temperature; therefore, effective heat dissipation technology is crucial for ensuring the stability and safety of battery modules. Traditional battery module temperature control structures typically employ air cooling or natural convection cooling. These methods are insufficient in heat dissipation efficiency for high-power-density and high-energy-density battery modules, failing to meet the heat dissipation requirements of battery modules under high-load operating conditions. Utility Model Content

[0003] The main purpose of this invention is to propose a box structure that aims to improve heat dissipation efficiency.

[0004] To achieve the above objectives, the box structure proposed in this utility model includes:

[0005] The housing has multiple spaced-apart battery receiving slots inside.

[0006] A cover element, wherein the cover element is disposed over the opening of the housing, and the cover element has a plurality of spaced-apart battery positioning grooves formed on the side facing the housing, each battery positioning groove and a battery receiving groove forming a battery receiving cavity, the battery receiving cavity being used to accommodate a single battery cell; and

[0007] The temperature control structure includes multiple flow guide tubes, each of which is disposed in a battery housing cavity. Each of the flow guide tubes is connected to at least one other flow guide tube to form a flow channel. One end of the flow channel is used to connect to the liquid inlet interface, and the other end of the flow channel is used to connect to the liquid outlet interface.

[0008] In one embodiment, the housing structure further includes a heat dissipation component, which is disposed on the side of the housing facing away from the cover.

[0009] In one embodiment, the outer bottom wall of the housing is recessed inward to form a groove;

[0010] The housing structure also includes a plurality of first heat dissipation fins, which are spaced apart on the heat dissipation component and are all accommodated within the groove.

[0011] In one embodiment, the housing structure further includes a plurality of second heat dissipation fins, which are spaced apart on the side of the heat dissipation component facing away from the housing.

[0012] In one embodiment, the housing structure further includes two ear plates, which are respectively disposed at opposite ends of the heat sink. The two ear plates are located on the side of the heat sink facing away from the housing, and the two ear plates and the heat sink together form a fin receiving groove, in which a plurality of second heat sink fins are accommodated.

[0013] In one embodiment, the housing structure further includes two mounting plates, each of which is disposed on the side of one of the ear plates facing away from the heat sink.

[0014] In one embodiment, the housing structure further includes a temperature sensor located at the liquid outlet.

[0015] In one embodiment, the housing structure further includes a charge / discharge connector, which is disposed in the housing.

[0016] In one embodiment, the housing has a sealing groove that surrounds the opening of the housing;

[0017] The housing structure also includes a sealing ring, which is disposed in the sealing groove and located between the housing and the cover.

[0018] This utility model also proposes a battery module, the battery module comprising;

[0019] Box structure, as described above; and

[0020] Multiple individual cells, each of which contains one or more individual cells.

[0021] In this invention, multiple spaced battery receiving slots are formed inside the housing, improving the utilization rate of the internal space. The battery receiving cavity formed by the battery limiting slot formed by the cover and the battery receiving slots ensures the stable placement of individual batteries within the housing. Multiple guide pipes in the temperature control structure correspond to multiple battery receiving cavities within the housing structure. These guide pipes can be connected sequentially to form a single flow channel, or two or more guide pipes can be connected to form a single flow channel. Multiple guide pipes form multiple flow channels. Based on this, the cooperation of the inlet and outlet interfaces allows low-temperature fluid to flow through one or more flow channels to absorb heat inside the housing, achieving uniform heat dissipation within the housing structure. The liquid cooling method also ensures efficient heat dissipation. Furthermore, when necessary, high-temperature fluid can be guided through the flow channels for heating, thus giving the housing structure good temperature regulation capabilities, enabling both heat dissipation and heating. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of an embodiment of the box structure provided by this utility model;

[0024] Figure 2 for Figure 1 A structural decomposition diagram;

[0025] Figure 3 This is a structural schematic diagram of one embodiment of the sealing element;

[0026] Figure 4 This is a schematic diagram of another embodiment of the sealing element (with temperature regulating structure);

[0027] Figure 5 This is a schematic diagram of the assembly structure of the cover and the individual battery cell;

[0028] Figure 6 This is a schematic diagram of one embodiment of a heat sink;

[0029] Figure 7 A schematic diagram of another embodiment of the box structure provided by this utility model.

[0030] Explanation of icon numbers:

[0031] 1000. Box structure; 1. Box; 101. Battery receiving slot; 102. Sealing slot; 103. Heat dissipation slot; 2. Cover; 201. Battery limiting slot; 3. Single battery; 4. Liquid inlet port; 5. Liquid outlet port; 6. Guide pipe; 7. Heat dissipation component; 8. First heat dissipation fin; 9. Second heat dissipation fin; 10. Ear plate; 11. Mounting plate; 12. Charge / discharge connector.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] 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 scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] 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 technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, 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. When 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.

[0036] This utility model proposes a box structure 1000.

[0037] Please see Figures 1 to 5 In one embodiment of this utility model, the box structure 1000 includes a box body 1, a cover 2, and a temperature regulating structure; a plurality of spaced battery receiving slots 101 are formed inside the box body 1; the cover 2 covers the opening of the box body 1, and a plurality of spaced battery limiting slots 201 are formed on the side of the cover 2 facing the box body 1, each battery limiting slot 201 and a battery receiving slot 101 enclose a battery receiving cavity to accommodate a single battery 3; the temperature regulating structure includes a plurality of guide tubes 6, each guide tube 6 is disposed in a battery receiving cavity, each guide tube 6 is connected to at least one other guide tube 6 to form a guide channel, one end of the guide channel is connected to the liquid inlet 4, and the other end of the guide channel is connected to the liquid outlet 5.

[0038] Each battery housing cavity can contain one or more individual batteries 3, with the specific number selected according to actual needs. The guide pipe 6 can be placed in the battery limiting groove 201 or in the battery housing groove 101, so that it can directly contact the individual batteries 3 in the battery housing cavity to ensure heat exchange effect, while also limiting the individual batteries 3 and maintaining the stability of the individual batteries 3.

[0039] Multiple guide pipes 6 can be connected sequentially to form a guide channel, or two or more guide pipes 6 can be connected to form a guide channel. Multiple guide pipes 6 form multiple independent guide channels. In this embodiment, the guide pipes 6 are set in the form of coils, which can achieve better heat exchange effect. In other embodiments, the cover 2 is provided with multiple flow channels corresponding to each battery limiting groove 201. Multiple guide pipes 6 are used to connect adjacent flow channels, so that the cover 2 forms multiple guide channels. Multiple guide channels can be connected to the same liquid inlet 4 and liquid outlet 5, or they can operate independently of each other. That is, each guide channel is provided with a liquid inlet 4 and a liquid outlet 5. Multiple independently operating guide channels can select fluids of different temperatures or adjust the flow rate and flow rate of fluids for individual batteries 3 with temperature differences to specifically adjust the temperature, thereby meeting the temperature adjustment requirements of individual batteries 3 with temperature differences, and thus better ensuring the temperature uniformity of multiple individual batteries 3 in the battery module. Furthermore, the structure of the guide tube 6 must be adapted to the shape of the battery limiting groove 201. For example, in this embodiment, in order to facilitate the limiting of the square single battery cell 3, both the battery receiving groove 101 and the battery limiting groove 201 are square, and the corresponding guide tube 6 is also square.

[0040] It should be noted that the positions of the liquid inlet 4 and the liquid outlet 5 are set according to the position of the guide tube 6. When the guide tube 6 is set in the battery limiting groove 201, the corresponding liquid inlet 4 and the liquid outlet 5 are set on the cover 2; when the guide tube 6 is set in the battery receiving groove 101, the corresponding liquid inlet 4 and the liquid outlet 5 are set on both sides of the housing 1.

[0041] In the technical solution of this utility model, multiple spaced battery receiving slots 101 are formed inside the housing 1, which improves the utilization rate of the space inside the housing 1. The battery receiving cavity formed by the battery limiting slot 201 formed by the cover 2 and the battery receiving slots 101 can ensure the stable placement of the individual battery 3 inside the housing 1. The multiple guide pipes 6 in the temperature regulation structure correspond to the multiple battery receiving cavities inside the housing structure. The multiple guide pipes 6 can be connected sequentially to form a guide channel, or two or more guide pipes 6 can be connected to form a guide channel. Multiple guide pipes 6 form multiple guide channels. Based on this, the cooperation of the liquid inlet port 4 and the liquid outlet port 5 can guide the low temperature fluid to flow through one or more guide channels to absorb the heat inside the housing 1, realizing uniform heat dissipation inside the housing structure 1000. The liquid cooling method also ensures heat dissipation efficiency. In addition, when necessary, high temperature fluid can be guided to flow through the guide channels to achieve heating, so that the housing structure has a good temperature regulation capability, which can both dissipate heat and heat.

[0042] Furthermore, in one embodiment of this utility model, please refer to... Figure 1 and Figure 2 The enclosure structure 1000 also includes a heat sink 7, which is located on the side of the enclosure 1 facing away from the cover 2. The heat sink 7 and the cover 2 form a double-sided heat dissipation structure, which improves heat dissipation efficiency and uniformity.

[0043] To further improve heat dissipation efficiency, please refer to one embodiment of this utility model. Figure 2 and Figure 6 The outer bottom wall of the housing 1 is recessed inward to form a groove; the housing structure 1000 also includes a plurality of first heat dissipation fins 8, which are spaced apart from the heat dissipation component 7 and are all housed within the groove. The arrangement of the first heat dissipation fins 8 increases the heat dissipation area. Furthermore, since the plurality of first heat dissipation fins 8 are all housed within the groove, they can be positioned closer to the battery receiving slot 101, resulting in better heat dissipation. This also reduces the volume of the housing structure 1000, making it more suitable for confined spaces. In another embodiment of this utility model, please refer to... Figure 7 The outer bottom wall of the housing 1 forms multiple heat dissipation grooves 103. The multiple heat dissipation grooves 103 and multiple battery receiving grooves 101 are arranged alternately, and the number of heat dissipation grooves 103 is one more than the number of battery receiving grooves 101. That is, each battery receiving groove 101 is located between two heat dissipation grooves 103. Correspondingly, each first heat dissipation fin 8 is inserted into a heat dissipation groove 103. In this way, the first heat dissipation fin 8 can achieve multi-faceted heat dissipation, improve heat dissipation efficiency, and with this arrangement, the depth of the heat dissipation grooves 103 can be set to be greater, and the size of the corresponding first heat dissipation fin 8 can be larger, thereby increasing the heat dissipation area.

[0044] Furthermore, in one embodiment of this utility model, please refer to... Figure 2 and Figure 6 The pool assembly also includes multiple second heat dissipation fins 9, which are spaced apart on the side of the heat sink 7 facing away from the housing 1. The second heat dissipation fins 9 can increase the heat dissipation area of ​​the heat sink 7, effectively improving the heat dissipation efficiency. Moreover, the multiple second heat dissipation fins 9 and the multiple first heat dissipation fins 8 are located on both sides of the heat sink 7, which significantly improves the heat dissipation efficiency of the heat sink 7.

[0045] Specifically, in one embodiment of this utility model, please refer to Figure 6 The enclosure structure 1000 also includes two ear plates 10, which are respectively located at opposite ends of the heat sink 7. The two ear plates 10 are situated on the side of the heat sink 7 facing away from the enclosure 1. The two ear plates 10 and the heat sink 7 together form a fin receiving groove, in which multiple second heat sink fins 9 are accommodated. In this way, the bottom of the battery pack consists of the two ear plates 10, rather than the second heat sink fins 9, thus protecting the second heat sink fins 9 and preventing them from directly contacting other equipment after the enclosure structure 1000 is installed, which would affect the heat dissipation performance of the second heat sink fins 9.

[0046] Furthermore, in one embodiment of this utility model, please refer to... Figure 1 , Figure 2 and Figure 6 The enclosure structure 1000 also includes two mounting plates 11, each mounted on the side of an ear plate 10 facing away from the heat sink 7. This arrangement enhances the structural stability of the entire enclosure structure 1000. The combined use of the mounting plates 11 and ear plates 10 disperses and absorbs impact forces when the enclosure structure 1000 is subjected to external impacts, protecting the internal components from damage. Through holes can be provided on the mounting plates 11 to facilitate the installation and removal of the enclosure structure 1000.

[0047] To monitor the coolant temperature, in one embodiment of this invention, the housing structure 1000 further includes a temperature sensor located at the coolant outlet 5. By installing a temperature sensor at the outlet 5, the temperature of the fluid in the flow channel after heat exchange with the housing structure 1000 can be accurately monitored. This helps in evaluating the temperature regulation effect of the housing structure 1000. Simultaneously, by monitoring the fluid temperature at the outlet in real time, the fluid velocity and flow rate can be controlled more accurately, thereby improving the efficiency and effectiveness of the entire thermal management system. Water is typically used as the fluid in this embodiment.

[0048] Specifically, in one embodiment of this utility model, the cover 2 is a metal plate, thus possessing a certain heat dissipation capacity; preferably, it is made of aluminum. Aluminum has a high thermal conductivity, effectively conducting heat away from the housing structure 1000. Simultaneously, aluminum has a low density, making the heat dissipation component lighter, facilitating installation and handling, and also reducing the overall weight of the housing structure 1000. Furthermore, the heat dissipation component 7 can also be made of aluminum. In other embodiments, the cover 2 and the heat dissipation component 7 are plate-shaped heat pipes, filled with a phase change material, which absorbs heat for cooling or releases heat for heating through phase change.

[0049] Furthermore, in one embodiment of this invention, the guide tube 6 is made of metal. Specifically, it can be copper or aluminum, etc. These materials have high thermal conductivity, which can effectively conduct heat from the heat source to the coolant, thereby achieving rapid heat dissipation. In addition, metal materials are easy to process into various shapes and structures, such as coils, fins, etc., which provides flexibility for the design of the guide tube 6.

[0050] For ease of use, in one embodiment of this utility model, the housing structure 1000 further includes a charge / discharge connector 12, which is disposed on the housing 1. The charge / discharge connector 12 is electrically connected to multiple individual battery cells 3 of the housing structure via wires, and the electrical energy of the housing structure 1000 can be used or the multiple individual battery cells 3 can be charged through the charge / discharge connector 12.

[0051] To ensure airtightness, please refer to one embodiment of this utility model. Figure 2 The housing 1 has a sealing groove 102, which surrounds the opening of the housing 1. The housing structure 1000 also includes a sealing ring (not shown in the figure), which is located in the sealing groove 102 and between the housing 1 and the cover 2. After installation, the cover 2 can compress the sealing ring, causing it to deform and fill the gap between the housing 1 and the cover 2, ensuring the airtightness of the housing 1. The cover 2 can be connected to the housing 1 by screws or other means.

[0052] This utility model also proposes a battery module, which includes a housing structure 1000 and a plurality of individual batteries 3. Each battery housing cavity is provided with one or more individual batteries 3. The specific structure of the housing structure 1000 is as described in the above embodiments. Since this battery module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and 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 box structure, characterized in that, include: The housing has multiple spaced-apart battery receiving slots inside. A cover is provided on the opening of the box body. The cover has a plurality of spaced battery limiting grooves on one side facing the box body. Each battery limiting groove and a battery receiving groove form a battery receiving cavity, which is used to accommodate a single battery. as well as The temperature control structure includes multiple flow guide tubes, each of which is disposed in a battery housing cavity. Each of the flow guide tubes is connected to at least one other flow guide tube to form a flow channel. One end of the flow channel is used to connect to the liquid inlet interface, and the other end of the flow channel is used to connect to the liquid outlet interface.

2. The box structure as described in claim 1, characterized in that, The enclosure structure also includes a heat dissipation component, which is located on the side of the enclosure facing away from the cover.

3. The box structure as described in claim 2, characterized in that, The outer bottom wall of the box is recessed inward to form a groove; The housing structure also includes a plurality of first heat dissipation fins, which are spaced apart on the heat dissipation component and are all accommodated within the groove.

4. The box structure as described in claim 2, characterized in that, The housing structure also includes a plurality of second heat dissipation fins, which are spaced apart on the side of the heat dissipation component facing away from the housing.

5. The box structure as described in claim 4, characterized in that, The housing structure also includes two ear plates, which are respectively disposed at opposite ends of the heat sink. The two ear plates are located on the side of the heat sink facing away from the housing. The two ear plates and the heat sink together form a fin receiving groove, and a plurality of second heat sink fins are accommodated in the fin receiving groove.

6. The box structure as described in claim 5, characterized in that, The enclosure structure also includes two mounting plates, each of which is located on the side of the ear plate facing away from the heat sink.

7. The box structure as described in any one of claims 1 to 6, characterized in that, The housing structure also includes a temperature sensor, which is located at the liquid outlet.

8. The box structure as described in any one of claims 1 to 6, characterized in that, The enclosure structure also includes a charging / discharging connector, which is located within the enclosure.

9. The box structure as described in any one of claims 1 to 6, characterized in that, The housing has a sealing groove, which is arranged around the opening of the housing. The housing structure also includes a sealing ring, which is disposed in the sealing groove and located between the housing and the cover.

10. A battery module, characterized in that, include: The box structure, as described in any one of claims 1 to 9; and Multiple individual cells, each of which contains one or more individual cells.

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