Battery module and liquid-cooled battery pack

Abstract

The utility model provides a battery module and a liquid-cooled battery pack, the battery module comprises a plurality of battery cells which are arranged at intervals, and each battery cell is provided with a first pole and a second pole which are opposite in polarity; the connecting pieces are arranged on the first pole and the second pole, and the first pole and the second pole are electrically connected with the corresponding connecting pieces respectively; the connecting bar is provided with a first clamping part and a second clamping part which are oppositely arranged, the first clamping part is used for being matched with the connecting piece on the first pole of one battery cell in a clamping manner, and the second clamping part is used for being matched with the connecting piece on the second pole of the other adjacent battery cell in a clamping manner, so that the two adjacent battery cells are connected in series. With the adoption of the technical scheme, the technical problem of low assembly efficiency between the battery monomers and the aluminum row can be solved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a battery module and a liquid-cooled battery pack. Background Technology

[0002] In related technologies, when integrating battery cells into modules or battery packs, the battery cells need to be fixed side by side first, and then aluminum busbars are welded. During the fixing and welding process, the positions of the battery cells may become misaligned, leading to poor welding and other assembly problems; furthermore, the welding process easily generates metal debris, posing safety risks such as short circuits; at the same time, the first-pass yield of welding generally needs to be improved, resulting in rework and repairs, which wastes manpower and resources.

[0003] Therefore, the above solution reduces the assembly efficiency between the battery cell and the aluminum busbar, and cannot meet the high-efficiency production requirements of the device. Utility Model Content

[0004] The embodiments of this utility model provide a battery module and a liquid-cooled battery pack, which can improve the technical problem of low assembly efficiency between battery cells and aluminum busbars.

[0005] In a first aspect, embodiments of this utility model provide a battery module, comprising: a plurality of spaced-apart cells, each cell having a first terminal and a second terminal with opposite polarities; connectors, each of the first and second terminals being provided with a connector, the first and second terminals being electrically connected to their respective corresponding connectors; and a connecting strip having a first engaging portion and a second engaging portion disposed opposite to each other, the first engaging portion being used to engage with a connector on the first terminal of one of the cells, and the second engaging portion being used to engage with a connector on the second terminal of an adjacent cell, so that the two adjacent cells are connected in series.

[0006] In one embodiment, the connector includes a body and a snap-fit ​​member. The body is connected to a first pole or a second pole, and the snap-fit ​​member is movably connected to the body so that the snap-fit ​​member can move relative to the body, thereby engaging and disengaging with the first snap-fit ​​portion or the second snap-fit ​​portion.

[0007] In one embodiment, the snap-fit ​​component is slidably connected to the body along the length of the battery module.

[0008] In one embodiment, the connector includes: a body having a receiving cavity; and a snap-fit ​​member that is connected to the body and is movable relative to the body along the length of the battery module, one end of the snap-fit ​​member being movably disposed within the receiving cavity, and the other end of the snap-fit ​​member being located outside the body, the other end of the snap-fit ​​member being used to engage and disengage with a first snap-fit ​​portion and a second snap-fit ​​portion.

[0009] In one embodiment, the snap-fit ​​component further includes: a connecting shaft, including a first end and a second end opposite to each other, the first end being movably disposed within a receiving cavity, and the second end being located outside the body; a snap-fit ​​block connected to the second end, the first snap-fit ​​portion and the second snap-fit ​​portion being used to snap into and separate from the snap-fit ​​block.

[0010] In one embodiment, the connector further includes an elastic element, which is sleeved on the outer periphery of the connecting shaft, with one end of the elastic element abutting against the snap-fit ​​block and the other end of the elastic element abutting against the outer side wall of the body. The elastic element is used to apply a force to the snap-fit ​​block in the direction from the first end to the second end.

[0011] In one embodiment, the elastic element includes a spring.

[0012] In one embodiment, the connecting bar includes a plate body, a first snap-fit ​​portion and a second snap-fit ​​portion protruding from the same side of the plate body, and the first snap-fit ​​portion and the second snap-fit ​​portion are spaced apart along the length direction of the plate body.

[0013] In one embodiment, the connecting strip includes a space between the first snap-fit ​​portion and the second snap-fit ​​portion, and the first snap-fit ​​portion and the second snap-fit ​​portion are respectively provided with hook structures on the side facing the space; or, the first snap-fit ​​portion and the second snap-fit ​​portion are respectively provided with hook structures on the side facing away from the space.

[0014] In one embodiment, the first latching portion and the second latching portion are distributed at both ends of the plate; or, the first latching portion and the second latching portion are spaced apart from both ends of the plate.

[0015] In one embodiment, the connector is provided with a first threaded hole, and the connecting block is provided with a second threaded hole corresponding to the first threaded hole. The fastener passes through and is connected to the first threaded hole and the second threaded hole to fix the connector and the connecting block.

[0016] Secondly, embodiments of this utility model provide a liquid-cooled battery pack, which includes: a cover; a liquid-cooled frame having a receiving cavity, the cover being disposed on the liquid-cooled frame; and the aforementioned battery module being disposed within the receiving cavity, the liquid-cooled frame being used to cool the battery module.

[0017] In one embodiment, the liquid-cooled frame includes: a liquid-cooled base plate; and a plurality of liquid-cooled side plates that enclose a receiving cavity along the edge of the liquid-cooled base plate, wherein the liquid-cooled cavity of the liquid-cooled base plate is independent of the liquid-cooled cavities of the plurality of liquid-cooled side plates.

[0018] In one embodiment, the liquid-cooled battery pack further includes a control panel disposed on the outside of the cover, the control panel being electrically connected to the battery module for controlling the battery module.

[0019] In one embodiment, the liquid cooling cavity of the liquid-cooled side plate disposed opposite to the control panel is independent of the liquid cooling cavities of the other plurality of liquid-cooled side plates.

[0020] In one embodiment, the flow channel of the liquid cooling cavity of the liquid-cooled side plate includes a unidirectional flow channel.

[0021] By applying the technical solution of this utility model, by setting connectors on the first and second poles, in the subsequent assembly process, it is only necessary to use the first snap-fit ​​part to snap-fit ​​with the connector on the first pole of one of the cells, and the second snap-fit ​​part to snap-fit ​​with the connector on the second pole of the adjacent cell, so that the two adjacent cells can be connected in series. Compared with the traditional welding connection method, snap-fit ​​assembly does not require the use of high-temperature welding equipment, so there is no open flame at the installation site, which improves safety. At the same time, it avoids the harmful substances that may be generated during the welding process, which is more friendly to the environment and the health of operators. Moreover, snap-fit ​​assembly is usually simple and quick to operate, saving tedious preparation work and waiting time, improving construction efficiency, saving time costs, and thus facilitating the mass production of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0023] Figure 1 This is a three-dimensional schematic diagram of the battery module provided in an embodiment of this utility model;

[0024] Figure 2 This is a cross-sectional schematic diagram of a portion of the structure of a battery module provided in an embodiment of this utility model;

[0025] Figure 3 This is a three-dimensional schematic diagram of a connecting row provided in an embodiment of this utility model;

[0026] Figure 4 This is a three-dimensional schematic diagram of another connecting row provided in an embodiment of this utility model;

[0027] Figure 5 This is a perspective view of the connector provided in an embodiment of this utility model;

[0028] Figure 6 This is a three-dimensional schematic diagram of a liquid-cooled battery pack provided in an embodiment of this utility model;

[0029] Figure 7 This is a three-dimensional schematic diagram of a portion of the structure of the liquid-cooled battery pack provided in an embodiment of this utility model;

[0030] Figure 8This is a top view schematic diagram of the liquid-cooled battery pack provided in an embodiment of this utility model;

[0031] Figure 9 yes Figure 8 Schematic diagram of the cross section at point AA;

[0032] Figure 10 yes Figure 8 A cross-sectional view of section BB.

[0033] The above figures include the following reference numerals:

[0034] Battery cell 10, first terminal 11, second terminal 12

[0035] Connector 20, body 21, receiving cavity 211, snap-fit ​​component 22, connecting shaft 221, snap-fit ​​block 222, elastic element 23, first threaded hole 24.

[0036] Connecting strip 30, plate 31, first snap-fit ​​part 32, second snap-fit ​​part 33, second threaded hole 34

[0037] Cover 40

[0038] Liquid-cooled frame 50, housing space 51, liquid-cooled base plate 52, liquid-cooled side plate 53, unidirectional flow channel 54.

[0039] Control Panel 60

[0040] The length direction of the battery module is X. Detailed Implementation

[0041] 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.

[0042] like Figures 1 to 10As shown, in a first aspect, an embodiment of the present invention provides a battery module, the battery module comprising: a plurality of spaced-apart cells 10, each cell 10 having a first terminal 11 and a second terminal 12 with opposite polarities; connectors 20, each of the first terminal 11 and the second terminal 12 being provided with a connector 20, the first terminal 11 and the second terminal 12 being electrically connected to their respective corresponding connectors 20; and a connecting strip 30 having a first engaging portion and a second engaging portion disposed opposite to each other, the first engaging portion being used to engage with the connector 20 on the first terminal 11 of one of the cells 10, and the second engaging portion being used to engage with the connector 20 on the second terminal 12 of another adjacent cell 10, so that the two adjacent cells 10 are connected in series.

[0043] By applying the technical solution of this utility model, by setting connectors 20 on the first pole post 11 and the second pole post 12, in the subsequent assembly process, it is only necessary to use the first snap-fit ​​part to snap-fit ​​with the connector 20 on the first pole post 11 of one of the battery cells 10, and the second snap-fit ​​part to snap-fit ​​with the connector 20 on the second pole post 12 of the adjacent battery cell 10, so that the two adjacent battery cells 10 can be connected in series. Compared with the traditional welding connection method, snap-fit ​​assembly does not require the use of high-temperature welding equipment, so there is no open flame at the installation site, which improves safety. At the same time, it avoids the harmful substances that may be generated during the welding process, which is more friendly to the environment and the health of operators. Moreover, snap-fit ​​assembly is usually simple and quick to operate, saving tedious preparation work and waiting time, improving construction efficiency, saving time costs, and thus facilitating the mass production of the device.

[0044] In one embodiment, the connector 20 includes a body 21 and a snap-fit ​​member 22. The body 21 is connected to the first pole post 11 or the second pole post 12, and the snap-fit ​​member 22 is movably connected to the body 21, allowing the snap-fit ​​member 22 to move relative to the body 21, so that the snap-fit ​​member 22 can engage and disengage with the first snap-fit ​​part 32 or the second snap-fit ​​part 33. This configuration not only meets the connection requirements between the connector 20 and the connecting strip 30, but also provides a simple and reliable connection method, facilitating the installation and disassembly of the connector 20 and the connecting strip 30, thereby improving the efficiency of the device's assembly and disassembly.

[0045] In one embodiment, the snap-fit ​​connector 22 is slidably connected to the body 21 along the length of the battery module. Sliding connections typically do not require special tools or materials for connection and disassembly, thus saving significant time and cost. Furthermore, sliding connections reduce the risk of wear and damage to components. Of course, in other embodiments of this application, the snap-fit ​​connector 22 and the body 21 can also be rotatably connected, as long as the usage requirements of the device are met.

[0046] In one embodiment, the connector 20 includes: a body 21 having a receiving cavity 211; and a snap-fit ​​member 22, which is connected to the body 21 and is movable relative to the body 21 along the length of the battery module. One end of the snap-fit ​​member 22 is movably disposed within the receiving cavity 211, and the other end of the snap-fit ​​member 22 is located outside the body 21. A first snap-fit ​​portion and a second snap-fit ​​portion are used to snap and separate from the other end of the snap-fit ​​member 22. This arrangement facilitates the snap-fit ​​member 22 to engage with the first and second snap-fit ​​portions on the connecting strip 30 to meet the assembly requirements of the device. At the same time, movably disposing one end of the snap-fit ​​member 22 within the receiving cavity 211 prevents the snap-fit ​​member 22 from occupying additional installation space, thereby helping to reduce the overall size of the device and achieve miniaturization.

[0047] In one embodiment, the snap-fit ​​member 22 further includes: a connecting shaft 221, including a first end and a second end opposite to each other, the first end being movably disposed within the receiving cavity 211, and the second end being located outside the body 21; and a snap-fit ​​block 222 connected to the second end, wherein the first snap-fit ​​portion and the second snap-fit ​​portion are used to snap into and disengage with the snap-fit ​​block 222. In this application, the mobility of one end of the connecting shaft 221 within the receiving cavity 211 provides convenience for installation and adjustment, while the snap-fit ​​engagement of the snap-fit ​​block 222 with the first snap-fit ​​portion and the second snap-fit ​​portion ensures the firmness and stability of the connection.

[0048] Furthermore, the connecting shaft 221 and the snap-fit ​​block 222 can be separate components. Since they are independent parts, they are easier to replace. If one component is damaged or worn, only the damaged part needs to be replaced, eliminating the need to replace the entire assembly and reducing maintenance costs. The separate structure also provides greater flexibility, allowing different connecting shafts 221 or snap-fit ​​blocks 222 to be used in different applications to meet specific connection requirements. Separate connecting shafts 221 and snap-fit ​​blocks 222 are generally easier to install and remove. For example, the connecting shaft 221 can be easily installed into the receiving cavity 211, while the snap-fit ​​block 222 can be connected to the connecting shaft 221 via a snap-fit ​​or other quick-connect mechanism. This convenience allows for faster access and replacement of components during maintenance or repair, reducing downtime and production losses. The separate structure allows for a degree of independence in the design and manufacture of the connecting shaft 221 and snap-fit ​​block 222. This means that the most suitable combination of connecting shaft 221 and snap-fit ​​block 222 can be selected according to different connection requirements, material properties or working environment.

[0049] In one embodiment, the connector 20 further includes an elastic element 23, which is sleeved on the outer periphery of the connecting shaft 221. One end of the elastic element 23 abuts against the locking block 222, and the other end of the elastic element 23 abuts against the outer wall of the body 21. The elastic element 23 is used to apply a force to the locking block 222 in the direction from the first end to the second end. With this configuration, when the corresponding connecting row 30 contacts the front end of the locking block 222 with the first or second locking part, the elastic element 23 and the connecting shaft 221 are retracted by force until the first or second locking part is engaged with the locking block 222. Finally, it can interlock with the connecting row 30 to tightly connect two adjacent battery cells 10, so as to achieve a tight fit between the two.

[0050] In one embodiment, the elastic element 23 includes a spring. Because springs have excellent elasticity, they deform when subjected to external force, and quickly return to their original state using their own elastic restoring force after the force is removed. This characteristic makes springs an ideal material for achieving a reset function. In reset components, springs are typically designed to push or pull related components back to their initial position after being triggered. Furthermore, springs undergo special processing and manufacturing, resulting in high durability and fatigue resistance, enabling them to maintain a stable reset effect over a long period. Springs can also be customized according to different application requirements, including shape, size, and material, to meet the design requirements of various reset components. Moreover, compared to other reset materials, springs have lower production costs and are easier to process and install, reducing the overall cost of the reset component.

[0051] In one embodiment, the connecting strip 30 includes a plate 31, with a first snap-fit ​​portion 32 and a second snap-fit ​​portion 33 protruding from the same side of the plate 31, and the first snap-fit ​​portion 32 and the second snap-fit ​​portion 33 are spaced apart along the length of the plate 31. This arrangement not only meets the snap-fit ​​requirements of the device, but also has a simple structure that is easy to manufacture, thus facilitating the mass production of the connecting strip 30. A hook structure is provided at the end of the first snap-fit ​​portion 32 and the second snap-fit ​​portion 33 away from the plate 31. This structure is typically elastic and can easily engage or disengage the connector 20. Through this structure, the connecting strip 30 can be quickly installed and disassembled, thereby improving the device's assembly and disassembly efficiency.

[0052] In one embodiment, the connecting strip 30 includes a space between a first engaging portion 32 and a second engaging portion 33. Hook structures protrude from the sides of the first engaging portion 32 and the second engaging portion 33 facing the space; alternatively, hook structures protrude from the sides of the first engaging portion 32 and the second engaging portion 33 away from the space. The first engaging portion 32 and the second engaging portion 33 are spaced apart to ensure they do not interfere with each other. The hook structures are key connection points between the connecting strip 30 and the connector 20, achieving a stable connection through elastic engagement. The hook structures are typically designed to be easy to engage and disengage to accommodate the needs of different connectors 20.

[0053] The first latching portion 32 and the second latching portion 33 are distributed at both ends of the plate body 31; or, the first latching portion 32 and the second latching portion 33 are spaced apart from both ends of the plate body 31. This arrangement allows the device to select different structures of the connecting strip 30 according to the usage environment to meet the usage requirements of the device.

[0054] In one embodiment, the connector 20 is provided with a first threaded hole 24, and the connecting row 30 is provided with a second threaded hole 34 corresponding to the first threaded hole 24. The fastener passes through and connects with the first threaded hole 24 and the second threaded hole 34 to fix the connector 20 and the connecting row 30.

[0055] Secondly, embodiments of this utility model provide a liquid-cooled battery pack, comprising: a cover 40; a liquid-cooled frame 50 having a receiving cavity 211, with the cover 40 covering the liquid-cooled frame 50; and a battery module disposed within the receiving cavity 211, the liquid-cooled frame 50 used to cool the battery module. The liquid-cooled frame 50, as a highly efficient thermal management technology, is widely used in the cooling process of battery modules. The liquid-cooled frame 50 is a system that reduces the temperature of the battery module through a liquid cooling medium. It absorbs the heat generated by the module through the coolant and then dissipates the heat to the external environment, thereby achieving cooling of the battery module. The liquid-cooled frame 50 uses liquid as the cooling medium, which has higher heat dissipation efficiency and lower noise compared to traditional air cooling methods. Simultaneously, the liquid-cooled frame 50 can ensure a more uniform temperature inside the battery module, avoiding battery performance degradation or safety issues caused by excessive temperature differences. Furthermore, the liquid-cooled frame 50 can adapt to battery modules of different sizes and shapes, exhibiting good flexibility and scalability.

[0056] The liquid-cooled frame 50 includes: a liquid-cooled base plate 52; and multiple liquid-cooled side plates 53, which enclose a receiving cavity 211 along the edge of the liquid-cooled base plate 52. The liquid-cooled cavity of the liquid-cooled base plate 52 is independent of the liquid-cooled cavities of the multiple liquid-cooled side plates 53. This structure means that each liquid-cooled cavity has its own independent coolant circulation system and heat dissipation path, while also allowing for interconnection between the liquid-cooled cavities of the liquid-cooled base plate 52 and the liquid-cooled cavities of the liquid-cooled side plates 53. In this design, the coolant can flow between different liquid-cooled cavities to achieve a more uniform temperature distribution and higher heat dissipation efficiency. This design ensures that the temperature of each liquid-cooled cavity can be independently controlled, improving the system's flexibility and reliability.

[0057] In one embodiment, the liquid-cooled battery pack further includes a control panel 60, disposed on the outside of the cover 40. The control panel 60 is electrically connected to the battery modules to control them. The control panel 60 of the liquid-cooled battery pack is an important component of the battery management system (BMS), undertaking the critical tasks of monitoring, controlling, and protecting the battery pack. I. Monitoring Function: The control panel 60 can monitor the temperature of each battery cell within the battery pack in real time, ensuring the batteries operate within a suitable temperature range. When the temperature is abnormal, the control panel 60 will issue an alarm and take corresponding protective measures, such as activating the cooling system or stopping battery charging and discharging. Voltage and Current Monitoring: The control panel 60 can monitor changes in the voltage and current of the battery pack, ensuring the batteries operate within a safe charging and discharging range. By monitoring voltage and current, abnormal conditions in the battery pack, such as short circuits, overcharging, and over-discharging, can be detected in a timely manner, and corresponding protective measures can be taken. II. Control Function: The control panel 60 can control the operation of the liquid cooling system, such as starting, stopping, and adjusting the flow and temperature of the coolant. By precisely controlling the cooling system, the battery pack can be ensured to operate within the optimal temperature range, extending battery life and improving performance. The control panel 60 can precisely control the battery charging and discharging process based on the actual condition of the battery pack and charging / discharging requirements. By optimizing the charging and discharging strategy, the charging speed and discharging efficiency of the battery can be improved, while reducing battery wear and extending its service life. III. Protection Functions: When the battery pack temperature is too high, the control panel 60 will automatically activate the cooling system to reduce the battery temperature and prevent dangerous situations such as battery thermal runaway and explosion. The control panel 60 can monitor the battery's charging / discharging status in real time. When the battery reaches the overcharge / over-discharge threshold, it will automatically cut off the charging / discharging circuit to prevent battery damage and safety accidents. When a short circuit occurs inside the battery pack, the control panel 60 will quickly cut off the circuit to prevent the short circuit current from damaging the battery and the vehicle. IV. Human-Machine Interaction Functions: The control panel 60 can display real-time status information of the battery pack, such as temperature, voltage, current, and remaining charge, making it convenient for drivers and maintenance personnel to understand the battery pack's operating status. When a battery pack malfunctions, the control panel 60 will issue an audible and visual alarm signal and display the fault type and location information, facilitating quick fault location and handling by maintenance personnel.

[0058] In one embodiment, the liquid cooling cavity of the liquid-cooled side plate 53, which is positioned opposite the control panel 60, is independent of the liquid cooling cavities of the other liquid-cooled side plates 53. This independent liquid cooling cavity ensures that each liquid-cooled side plate 53 can exchange heat independently, thereby improving heat dissipation efficiency. The coolant in each liquid cooling cavity can precisely cool its corresponding battery module or heat source, avoiding cross-contamination of heat. The independent liquid cooling cavity design reduces the risk of system failure. If one liquid cooling cavity malfunctions, such as a coolant leak or blockage, it will not affect the normal operation of other liquid cooling cavities. This helps ensure the stability and reliability of the entire liquid cooling system. Independent liquid cooling cavities simplify maintenance and management. If coolant replacement or cleaning of a liquid cooling cavity is required, it can be performed on a single cavity without affecting the entire liquid cooling system.

[0059] In one embodiment, the flow channel of the liquid cooling cavity of the liquid cooling side plate 53 includes a unidirectional flow channel 54. This improves the flow efficiency of the coolant, thereby increasing the heat exchange efficiency of the device to meet the usage requirements of the device.

[0060] By applying the technical solution of this utility model, connecting parts 20 are provided on the first electrode post 11 and the second electrode post 12. During subsequent assembly, the first snap-fit ​​part only needs to engage with the connecting part 20 on the first electrode post 11 of one of the battery cells 10, and the second snap-fit ​​part needs to engage with the connecting part 20 on the second electrode post 12 of the adjacent battery cell 10. This allows the two adjacent battery cells 10 to be connected in series. Compared to traditional welding connections, snap-fit ​​assembly does not require high-temperature welding equipment, thus eliminating open flames at the installation site, improving safety, and avoiding potentially harmful substances generated during welding. This is more environmentally friendly and beneficial to the health of operators. Furthermore, snap-fit ​​assembly is generally simple and quick to operate, saving tedious preparation work and waiting time, improving construction efficiency, and saving time costs, thereby facilitating the mass production of the device. It should be noted that the terminology used herein is for describing specific embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0062] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery module, characterized in that, The battery module includes: Multiple battery cells arranged at intervals, each of the battery cells having a first terminal and a second terminal with opposite polarities; The connector is provided on both the first pole and the second pole, and the first pole and the second pole are electrically connected to their respective connectors. The connector has a first snap-fit ​​portion and a second snap-fit ​​portion. The first snap-fit ​​portion is used to snap-fit ​​with the connector on the first terminal of one of the battery cells, and the second snap-fit ​​portion is used to snap-fit ​​with the connector on the second terminal of another adjacent battery cell, so that the two adjacent battery cells are connected in series.

2. The battery module according to claim 1, characterized in that, The connector includes a body and a snap-fit ​​component. The body is connected to the first pole or the second pole, and the snap-fit ​​component is movably connected to the body so that the snap-fit ​​component can move relative to the body, thereby engaging and disengaging with the first snap-fit ​​portion or the second snap-fit ​​portion.

3. The battery module as described in claim 2, characterized in that, The snap-fit ​​component is slidably connected to the body along the length of the battery module.

4. The battery module as described in claim 3, characterized in that, The body has a receiving cavity; the snap-fit ​​member is connected to the body and can move relative to the body along the length direction of the battery module. One end of the snap-fit ​​member is movably disposed in the receiving cavity, and the other end of the snap-fit ​​member is located outside the body. The other end of the snap-fit ​​member is used to snap and separate from the first snap-fit ​​part or the second snap-fit ​​part.

5. The battery module according to claim 4, characterized in that, The snap-fit ​​connector also includes: The connecting shaft includes a first end and a second end opposite to each other, the first end being movably disposed within the receiving cavity, and the second end being located outside the body; A snap-fit ​​block is connected to the second end, and the snap-fit ​​block is used to snap into and separate from the first snap-fit ​​part or the second snap-fit ​​part.

6. The battery module according to claim 5, characterized in that, The snap-fit ​​component further includes an elastic element, which is sleeved on the outer periphery of the connecting shaft, with one end of the elastic element abutting against the snap-fit ​​block and the other end of the elastic element abutting against the outer side wall of the body. The elastic element is used to apply a force to the snap-fit ​​block in the direction from the first end to the second end.

7. The battery module according to claim 6, characterized in that, The elastic element includes a spring.

8. The battery module according to any one of claims 1-7, characterized in that, The connecting strip includes a plate body, and the first snap-fit ​​portion and the second snap-fit ​​portion protrude from the same side of the plate body. The first snap-fit ​​portion and the second snap-fit ​​portion are distributed at intervals along the length direction of the plate body.

9. The battery module according to claim 8, characterized in that, The connecting strip includes a space between the first snap-fit ​​portion and the second snap-fit ​​portion, and the first snap-fit ​​portion and the second snap-fit ​​portion are respectively provided with a hook structure on the side facing the space; or, the first snap-fit ​​portion and the second snap-fit ​​portion are respectively provided with a hook structure on the side facing away from the space.

10. The battery module according to claim 8, characterized in that, The first latching portion and the second latching portion are distributed at both ends of the plate; or, the first latching portion and the second latching portion are spaced apart from both ends of the plate.

11. The battery module according to any one of claims 1-7, characterized in that, The connector is provided with a first threaded hole, and the connecting bar is provided with a second threaded hole corresponding to the first threaded hole. The fixing member is connected to the first threaded hole and the second threaded hole to fix the connector and the connecting bar.

12. A liquid-cooled battery pack, characterized in that, The liquid-cooled battery pack includes: Cover; A liquid-cooled frame having a receiving space, and the cover covering the liquid-cooled frame; The battery module as described in any one of claims 1-11 is disposed within the receiving space, and the liquid-cooled frame is used to cool the battery module.

13. The liquid-cooled battery pack according to claim 12, characterized in that, The liquid-cooled frame includes: Liquid-cooled base plate; Multiple liquid-cooled side plates enclose the receiving space along the edge of the liquid-cooled base plate, and the liquid-cooled cavity of the liquid-cooled base plate is independent of the liquid-cooled cavity of the multiple liquid-cooled side plates.

14. The liquid-cooled battery pack according to claim 13, characterized in that, The liquid-cooled battery pack also includes: A control panel is located on the outside of the cover, and the control panel is used to be electrically connected to the battery module to control the battery module.

15. The liquid-cooled battery pack according to claim 14, characterized in that, The liquid cooling cavity of the liquid-cooled side plate, which is positioned opposite to the control panel, is independent of the liquid cooling cavities of the other plurality of liquid-cooled side plates.

16. The liquid-cooled battery pack according to claim 13, characterized in that, The liquid cooling cavity of the liquid cooling side plate includes a unidirectional flow channel.

Images