Battery device

Abstract

The embodiment of the utility model provides a battery device. The battery device comprises a heat dissipation shell which comprises a body and a cover body, and the body and the cover body are mutually coupled to form an accommodating cavity; a first insulating part, a plurality of second insulating parts and a plurality of heat insulating parts, wherein the first insulating part is arranged on the inner wall of the body; the at least one battery assembly is arranged in the accommodating cavity and is adjacent to the first insulating part, each battery assembly in the at least one battery assembly comprises a plurality of battery cells, the plurality of battery cells are arranged to be superposed along the arrangement direction, and second insulating parts and heat insulating parts are arranged among the plurality of battery cells at intervals so as to be suitable for isolating the plurality of battery cells; and the heat dissipation piece is coupled to one side, close to the cover body, of the at least one battery assembly, and is suitable for absorbing heat released by the at least one battery assembly, so that the heat is transferred to the outside of the heat dissipation shell through the heat dissipation shell. Therefore, the heat dissipation performance, the insulation performance and the safety of the battery device can be improved.

Description

Technical Field

[0001] Example embodiments of the present disclosure generally relate to the field of battery technology, and more particularly, to a battery device. Background Art

[0002] As lithium batteries are widely used in power tools, electric vehicles, energy storage systems and other fields. However, existing lithium batteries rely on traditional fans or natural heat dissipation methods, resulting in poor heat dissipation performance, which makes the thermal management of the battery insufficient, affecting the safety and performance of the battery. Secondly, the battery cells in existing lithium batteries are isolated from the shell by a single layer of insulation, which cannot meet the insulation stability requirements of lithium batteries for long-term use, and have a short service life. At the same time, the existing lithium batteries have weak prevention and emergency response capabilities against thermal runaway, posing a safety hazard. In addition, the existing lithium batteries need to be distinguished and processed during the assembly process, and the assembly process is complicated and time-consuming. Therefore, existing lithium batteries have many problems in heat dissipation, insulation protection, production efficiency and cost control. Utility Model Content

[0003] An object of the present disclosure is to provide a battery device to at least partially solve the above-mentioned problems and / or other potential problems existing in existing battery devices.

[0004] In a first aspect of the present disclosure, a battery device is provided. The battery device includes: a heat dissipation housing, comprising a body and a cover, the body and the cover being coupled to form a receiving cavity; a first insulating member, a plurality of second insulating members, and a plurality of thermal insulation members, the first insulating member being arranged on an inner wall of the body; at least one battery assembly, disposed in the receiving cavity and adjacent to the first insulating member, each of the at least one battery assembly comprising a plurality of battery cells, the plurality of battery cells being arranged to be stacked along an arrangement direction, and the plurality of battery cells being spaced apart by second insulating members and thermal insulation members to isolate the plurality of battery cells; and a heat dissipation member, coupled to a side of the at least one battery assembly close to the cover and adapted to absorb heat released by the at least one battery assembly, so that the heat is transferred to the outside of the heat dissipation housing via the heat dissipation housing.

[0005] In an embodiment according to the present disclosure, the battery assembly and the heat dissipation housing can be effectively isolated by the first insulating member. In addition, by arranging the second insulating member and the heat insulating member at intervals between the multiple battery cells, the insulation isolation between the battery cells can be enhanced, and the accumulation of heat can be effectively slowed down, which helps to dissipate heat evenly, thereby avoiding the risk of local overheating or thermal runaway, and ensuring the electrical safety and thermal stability of the battery device. At the same time, the heat dissipation member and the heat dissipation housing can further enhance the thermal management capability of the battery device, and transfer the heat released by the battery assembly during operation to the outside. Other benefits will be described below in conjunction with the corresponding embodiments.

[0006] In some embodiments, the battery device further comprises a third insulation member, and the at least one battery assembly comprises a plurality of battery assemblies, the third insulation member being arranged between adjacent battery assemblies in a direction perpendicular to the arrangement direction, and adapted to isolate the plurality of battery assemblies.

[0007] In some embodiments, the battery device further comprises an end plate coupled to the heat dissipation housing, and adapted to isolate the plurality of battery assemblies in the arrangement direction of the battery cells.

[0008] In some embodiments, the battery device further comprises a partition plate arranged between the battery assembly and the cover, and the heat dissipation member is coupled to the partition plate.

[0009] In some embodiments, the battery device further comprises a sensor arranged between the battery assembly and the cover, and adapted to monitor the state of the plurality of battery cells.

[0010] In some embodiments, the battery assembly comprises an insulation film adapted to wrap the plurality of battery cells.

[0011] In some embodiments, the distance between adjacent battery cells in the battery assembly is 5-10 mm.

[0012] In some embodiments, the first insulation member, the second insulation member and the third insulation member are all members of non-compressible material, and the heat insulation member is a member of compressible material.

[0013] In some embodiments, the first insulation member, the second insulation member and the third insulation member are all mica sheets, the heat insulation member is an aerogel pad, and the heat dissipation member comprises a heat-conductive silicone pad.

[0014] In some embodiments, the battery device further comprises a fourth insulation member coupled to the inner wall of the cover.

[0015] It should be understood that the content described in this part of the content is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by describing in detail embodiments thereof with reference to the attached drawings in which:

[0017] Figure 1 A structural schematic diagram of a battery device according to an embodiment of the present disclosure is shown;

[0018] Figure 2 A structural schematic diagram of a heat dissipation member in a battery device according to an embodiment of the present disclosure is shown;

[0019] Figure 3 An exploded view of a battery device according to an embodiment of the present disclosure is shown; and

[0020] Figure 4 A schematic structural diagram of multiple battery assemblies according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present disclosure in more detail with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0022] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may be included below. The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0023] As briefly mentioned above, existing lithium batteries present numerous challenges in heat dissipation, insulation protection, production efficiency, and cost control. Specifically, from a heat dissipation perspective, existing cooling methods, such as fans or natural cooling, result in poor heat dissipation efficiency, thus impacting the performance and lifespan of lithium batteries.

[0024] In terms of insulation, existing lithium-ion batteries use a single layer of insulation, which can be made of plastic or air as the insulating medium of the module housing. This single-layer insulation solution is not reliable enough during long-term use and cannot effectively guarantee the stable operation of the battery.

[0025] Furthermore, existing lithium batteries have significant safety monitoring deficiencies. The insufficient number of monitoring sensors and their inappropriate placement make it impossible to fully and accurately monitor the battery's operating status. Furthermore, in dangerous situations like thermal runaway, existing lithium batteries only use thermocouple wires as resistors to cut off power, and rely solely on mica sheets to block the heat generated by thermal runaway. This simple and crude protection measure cannot meet the safety requirements of lithium batteries in complex and changing real-world environments.

[0026] Furthermore, the current common practice of insulating lithium battery cells with plastic molds is to provide insulation. This approach not only increases production costs but also makes assembly more difficult, requiring significant labor hours, impacting production efficiency and increasing the overall cost of battery devices.

[0027] In order to solve or at least partially solve the above-mentioned problems or other potential problems of battery devices in existing solutions, an embodiment of the present disclosure provides a battery device solution. The battery device includes a heat dissipation housing, a first insulating member, multiple second insulating members, multiple thermal insulation members, at least one battery assembly, and a heat dissipation member. The heat dissipation housing includes a body and a cover. The body and the cover are coupled to form a accommodating cavity, which provides a stable installation space for other components. A first insulating member is arranged on the inner wall of the body to enhance the insulation performance of the contact portion with the heat dissipation housing, which can effectively prevent electrical safety issues such as leakage.

[0028] At least one battery assembly is positioned within the cavity. These battery assemblies are adjacent to the first insulating member. Furthermore, each battery assembly comprises multiple cells neatly stacked along the arrangement direction, with second insulating members and thermal insulation members spaced between the cells. This arrangement precisely isolates the cells, preventing mutual interference between them and reducing the risk of chain reactions caused by local anomalies, such as the spread of thermal runaway between cells, thereby improving the overall stability and safety of the battery assembly.

[0029] Furthermore, a heat sink is coupled to the side of at least one battery assembly near the cover. This heat sink can promptly and effectively absorb the heat released by the battery assembly during operation, allowing the heat to be transferred to the external environment through the heat dissipation housing, thereby ensuring that the battery device is always within a reasonable temperature range during operation, avoiding problems such as battery performance degradation and shortened life due to overheating.

[0030] Figure 1 FIG. 1 shows a schematic structural diagram of a battery device 100 according to an embodiment of the present disclosure. Figure 2 FIG. 1 is a schematic structural diagram of the heat dissipation element 160 in the battery device 100 according to an embodiment of the present disclosure. Figure 3 The exploded view of the battery device 100 according to the embodiment of the present disclosure is shown below. Figures 1 to 3 The exemplary structure and operation of the battery device 100 are described below. The battery device 100 according to the embodiments of the present disclosure may include a lithium battery, or any other suitable battery device 100 other than a lithium battery. The concepts of the present disclosure will be primarily described below using a lithium battery as an example. It should be understood that the same principles apply to other battery devices 100, and will not be further described below.

[0031] likeFigure 1 and Figure 3 As shown, in an embodiment of the present disclosure, the battery device 100 generally includes a heat dissipation housing 110, a first insulating member 120, multiple second insulating members 130, multiple thermal insulation members 140, at least one battery assembly 150, and a heat dissipation member 160. Specifically, the heat dissipation housing 110 includes a body 1101 and a cover 1102. The body 1101 and cover 1102 are coupled to each other via a suitable connection method to form a receiving cavity. For example, the connection method includes threaded connection, snap connection, or welding, which is not specifically limited in the embodiments of the present disclosure. The receiving cavity is used to accommodate at least one battery assembly 150. Specifically, the body 1101 of the heat dissipation housing 110 has high thermal conductivity to effectively conduct heat released by the battery assembly during operation. Furthermore, the cover 1102 provides a sealing function, ensuring the structural integrity of the receiving cavity, while also providing a heat exchange channel with the external environment. By tightly coupling the main body 1101 and the cover 1102 , the airtightness and thermal conductivity of the heat dissipation housing 110 can be effectively controlled, thereby providing an efficient heat dissipation function during the operation of the battery assembly.

[0032] In the embodiment of the present disclosure, the heat dissipation housing 110 can be made of a lightweight and highly thermally conductive material to achieve good heat conduction. In addition, the connection method between the main body 1101 and the cover 1102 should ensure sufficient strength and stability to withstand the mechanical stress of the battery assembly during use, and ensure the long-term stability and sealing of the heat dissipation housing 110. In other words, the heat dissipation housing 110 can not only provide sufficient space to accommodate the battery assembly, but also effectively improve the heat dissipation performance of the battery device 100, ensuring that the battery maintains a lower temperature during operation, thereby extending the battery life and improving safety.

[0033] Furthermore, the first insulating member 120 is arranged on the inner wall of the main body 1101 of the heat dissipation shell 110 to provide electrical isolation for the battery device 100 and ensure electrical insulation between the battery assembly and the heat dissipation shell 110. The first insulating member 120 matches the shape and size of the inner wall of the main body 1101 of the heat dissipation shell 110. For example, if the main body 1101 is a rectangular structure, the first insulating member 120 can be made into a sheet structure that fits the rectangular inner wall of the main body 1101. During installation, the first insulating member 120 is evenly and flatly attached to the inner wall surface of the main body 1101, and can be fixed by adhesive, snap-fit ​​structure or other connection methods, thereby forming a reliable first insulation barrier between the battery assembly and the heat dissipation shell 110. In the embodiments of the present disclosure, there is no specific limitation on the fixing method of the first insulating member 120.

[0034] At least one battery assembly 150 is arranged in the accommodating cavity and is adjacent to the first insulating member 120. Each battery assembly includes a plurality of battery cells 1501, which are stacked along the arrangement direction A to form a battery assembly with a higher energy density. During the stacking of the battery cells 1501, the second insulating member 130 and the thermal insulation member 140 are sequentially inserted between adjacent battery cells 1501. Through this spacing arrangement, the battery assembly can maintain good thermal stability and electrical safety under high energy density and high power output. In other words, through the second insulating member 130 and the thermal insulation member 140, not only can the battery cells 1501 be effectively isolated and mutual interference between the battery cells 1501 be prevented, but the thermal management system can also be optimized to improve the heat dissipation effect and safety performance of the battery device 100.

[0035] Furthermore, a heat sink 160 is positioned on a side of at least one battery assembly 150 near the cover 1102 to effectively absorb heat released by the battery assembly during operation. The heat absorbed by the heat sink 160 is transferred to the external environment through the structure of the heat dissipation housing 110, thereby preventing heat accumulation within the battery device 100 and causing battery overheating or performance degradation.

[0036] When the battery assembly releases heat, the heat sink 160 quickly absorbs the heat and transfers it to the external environment of the heat dissipation housing 110 through the main body 1101 and the cover 1102 of the heat dissipation housing 110 through heat conduction, natural convection, and other radiation heat exchange methods. This effectively reduces the temperature of the battery assembly, ensures that the battery device 100 operates stably within an appropriate temperature range, avoids problems such as battery performance degradation and shortened life due to overheating, and improves the reliability and safety of the entire battery device 100.

[0037] Therefore, the battery device 100 provides an efficient and reliable heat dissipation solution for at least one battery assembly 150 through the synergistic effect of the heat dissipation shell 110 and the heat dissipation member 160, which can effectively solve the problem caused by heat accumulation in the battery assembly during operation. At the same time, the battery device 100 enhances the insulation of at least one battery assembly 150 by arranging the second insulating member 130 and the heat insulating member 140 at intervals in at least one battery assembly 150, and also effectively slows down the accumulation of heat, which helps to dissipate heat evenly, thereby avoiding the risk of local overheating or thermal runaway. Furthermore, through the coordinated work of the first insulating member 120, the second insulating member 130 and the heat insulating member 140, the insulation and heat insulation effect between the battery cells 1501 inside the battery assembly is guaranteed, and the insulation safety between the battery assembly as a whole and the heat dissipation shell 110 is enhanced.

[0038] like Figure 3As shown, in some embodiments, the battery device 100 further includes a third insulating member 170, and at least one battery assembly 150 includes a plurality of battery assemblies. The third insulating member 170 is arranged between adjacent battery assemblies. Specifically, the third insulating member 170 is arranged in a position perpendicular to the arrangement direction A of the battery cells 1501 so as to effectively isolate adjacent battery assemblies. By providing the third insulating member 170 between the battery assemblies, electrical interference or short circuit between the battery assemblies can be prevented, thereby improving the electrical safety of the entire battery module and avoiding electrical interference and thermal runaway that may be generated between multiple battery assemblies.

[0039] Illustratively, the plurality of battery assemblies include four battery assemblies, which are arranged in two rows in the heat dissipation housing 110 along the arrangement direction A of the battery cells 1501 of the battery assembly. During the assembly process, the third insulating member 170 is arranged between adjacent battery assemblies along a direction A perpendicular to the arrangement direction A of the battery cells 1501 of the battery assembly. For example, the third insulating member 170 can be firmly adhered between adjacent battery assemblies using an insulating adhesive, effectively preventing the conduction of current between different battery assemblies, preventing safety problems caused by electrical faults between battery assemblies, and further improving the insulation safety and stability of the battery device 100. In the embodiments of the present disclosure, there is no specific limitation on the fixing method of the third insulating member 170.

[0040] In some embodiments, the first insulating member 120, the second insulating member 130, and the third insulating member 170 are all made of incompressible materials to ensure that they maintain a stable shape and structure during long-term use of the battery device 100, thereby preventing compression deformation from affecting the electrical isolation or thermal management performance of the battery assembly. For example, the first insulating member 120 can be attached to the inner wall of the body 1101 of the heat dissipation housing 110 to ensure that it does not deform due to pressure during long-term use, thereby maintaining stable insulation performance.

[0041] The second insulating member 130 is located between adjacent battery cells 1501. Due to its incompressible nature, it effectively blocks the current conduction path between the battery cells 1501 and does not change shape due to pressure changes within the battery assembly, affecting the insulation effect. The third insulating member 170, leveraging its incompressibility, forms a reliable insulation barrier between adjacent battery assemblies, perpendicular to the arrangement direction A of the battery cells 1501, preventing electrical interference between the battery assemblies.

[0042] Furthermore, the thermal insulation member 140 is made of a compressible material to accommodate the thermal expansion and pressure changes that may occur during the operation of the battery assembly. As a component of compressible material, when the thermal insulation member 140 is installed between the battery cells 1501, a thermal insulation member 140 of appropriate thickness is selected based on the actual spacing between the battery cells 1501 and the required thermal insulation and buffering effects. Due to its compressibility, during the operation of the battery device 100, when the battery cells 1501 expand and contract due to heat or are subjected to slight external force impact, the thermal insulation member 140 can absorb energy through its own compression deformation, play a buffering role, further protect the structural integrity of the battery cells 1501 and the entire battery assembly, while not affecting its thermal insulation performance, thereby ensuring the stable operation and safety of the battery device 100 under complex working conditions.

[0043] In some embodiments, the first insulating member 120, the second insulating member 130, and the third insulating member 170 are all made of mica sheets. The electrical insulation properties of mica sheets can effectively isolate electrical interference between battery components and between battery cells. Mica sheets also have high high-temperature resistance, capable of withstanding the heat and mechanical stress generated during operation of the battery device 100, ensuring the electrical safety and structural stability of the battery device 100 during long-term operation.

[0044] Thermal insulation 140 is made of aerogel pads, which have extremely low thermal conductivity and are therefore able to effectively isolate heat transfer between battery cells. Aerogel not only offers excellent thermal insulation properties but is also lightweight and compressible, adapting to temperature fluctuations during battery assembly operation and maintaining excellent thermal insulation. Furthermore, the aerogel pads create a highly effective thermal barrier between battery cells, reducing the risk of thermal runaway due to localized overheating, thereby improving the thermal management capabilities and safety of the battery module.

[0045] In some embodiments, heat sink 160 comprises a thermally conductive silicone pad. This pad has excellent thermal conductivity and flexibility, enabling close contact between the battery assembly and heat dissipation housing 110, effectively dissipating heat generated by the battery assembly during operation. This pad enhances heat dissipation, reduces temperature fluctuations in the battery assembly, and ensures long-term stable operation in high-power or high-energy-density applications.

[0046] By adopting high-performance materials such as mica sheets, aerogel pads, and thermally conductive silicone pads, the battery device 100 in the embodiment of the present disclosure can achieve good electrical isolation, thermal management, and heat dissipation performance, ensuring the safety, stability, and high efficiency of the battery device 100, and meeting the safety and heat dissipation requirements of high-energy-density battery applications.

[0047] Figure 4 Schematic diagram of the structure of multiple battery assemblies according to the embodiment of the present disclosure is shown. Figure 3 andFigure 4 As shown, in some embodiments, the battery device 100 further includes an end plate 180. The end plate 180 is coupled to the heat dissipation housing 110 and is adapted to isolate the multiple battery assemblies along the arrangement direction A of the battery cells 1501. The end plate 180 is used to ensure the orderly arrangement of the battery assemblies within the heat dissipation housing 110 while providing structural support and isolation. The end plate 180 can be made of a material with excellent mechanical strength and heat-resistant insulation properties to ensure stability in high-temperature and high-load operating environments.

[0048] End plates 180 are positioned appropriately within heat dissipation housing 110, either at one of the ends of the battery assembly or between the two ends. They separate the multiple battery assemblies along the arrangement direction A of the battery cells 1501, preventing contact or electrical interference between the battery assemblies, thereby improving the safety and stability of battery device 100. Furthermore, end plates 180 effectively isolate the battery assemblies, preventing thermal runaway or electrical short circuits caused by temperature fluctuations or other factors.

[0049] By adding the end plates 180 to the battery device 100 , the physical isolation between the battery components is further enhanced, and the thermal management capability and overall structural stability of the battery device 100 are improved, so that the battery device 100 can operate better in a complex working environment.

[0050] For example, during the placement process, the battery assembly can be precisely positioned without displacement or shaking during subsequent use by providing auxiliary structures such as positioning grooves or support blocks on the end plate 180 .

[0051] In some embodiments, the battery device 100 further includes a separator 190. The separator 190 is disposed between the battery assembly and the cover 1102. The separator 190 may be made of a material having good thermal stability and mechanical strength to ensure that the separator 190 maintains structural stability and functionality during operation of the battery assembly.

[0052] In addition, the heat sink 160 can be coupled to the partition 190 so that the heat sink 160 can effectively absorb the heat released from the battery assembly and conduct the heat to the cover 1102 through the partition 190, thereby improving the heat dissipation performance of the entire battery device 100.

[0053] In some embodiments, the battery device 100 further includes a sensor. The sensor is arranged between the battery assembly and the cover 1102 and is suitable for monitoring the status of multiple battery cells 1501. The sensor is used to monitor the working status of the battery cells 1501 in the battery assembly in real time, including parameters such as voltage, temperature, and charging status. By arranging the sensor between the battery assembly and the cover 1102, it is possible to ensure that the position of the sensor is close to the battery assembly without directly interfering with the normal operation of the battery assembly, while being able to accurately obtain the working data of the battery cells 1501 to ensure the safe operation of the battery device 100. Furthermore, the arrangement position of the sensor can be adjusted according to the specific needs of the battery device 100 to achieve all-round monitoring of the battery status and further improve the safety and reliability of the battery device 100. This is not specifically limited in the embodiments of the present disclosure.

[0054] The sensors may include temperature sensors, voltage sensors, and current sensors, etc., which are not specifically limited in the embodiments of the present disclosure. These sensors are connected to the battery management system (BMS) wirelessly or wired, and the monitoring data is fed back to the management system in real time. The battery management system determines the health status, charging status, and temperature distribution of the battery cell 1501 based on the monitoring results of the sensors. If an abnormality is detected (such as excessive temperature, unstable voltage, or battery overcharge), the system can issue an alarm in time, or prevent thermal runaway or other safety problems by cutting off the power supply and other measures.

[0055] Continue to see Figure 3 In some embodiments, the battery assembly includes an insulating film 1502 suitable for wrapping multiple battery cells 1501. The insulating film 1502 provides electrical isolation for the battery assembly, preventing short circuits or electrical interference between battery components. The insulating film 1502 can be made of a high-strength, high-temperature resistant material with excellent electrical insulation properties, such as a polyimide film or other special insulating materials. These materials not only have good insulation properties, but also maintain stability at higher operating temperatures, ensuring that the electrical isolation between the battery cells 1501 is not affected by changes in the external environment.

[0056] The insulating film 1502 wraps multiple battery cells 1501 to form a battery assembly 150, which can ensure that the battery assembly maintains a stable electrical state during long-term use, and reduce the impact of external interference on the performance of the battery cells 1501 through the protective effect of the film.

[0057] The insulating film 1502 and the first insulating member 120 can achieve double insulation of the battery assembly, thereby effectively improving the safety of the battery device 100 and further improving the reliability and service life of the battery device 100.

[0058] In some embodiments, the distance between adjacent battery cells 1501 in the battery assembly is 5-10 mm, which can ensure effective isolation between the battery cells 1501 while improving the heat dissipation performance and structural stability of the battery assembly, thereby reducing the risk of thermal runaway caused by excessive temperature when the battery assembly operates at high power.

[0059] Specifically, a distance of 5-10 mm between adjacent battery cells 1501 ensures that heat is not excessively concentrated between the battery cells 1501 during battery operation, but is effectively dispersed and conducted through the heat dissipation housing 110 and the heat sink 160. This distance prevents the battery cells 1501 from colliding with each other or coming into physical contact due to expansion when the battery assembly 100 is subjected to mechanical vibration or external forces during operation, thereby improving the safety of the battery module.

[0060] In some embodiments, the battery device 100 further includes a fourth insulating member. This fourth insulating member is coupled to the inner wall of the cover 1102. This fourth insulating member is used to provide electrical isolation, preventing electrical contact between the cover 1102 and the battery assembly, thereby ensuring the safety and stability of the battery device 100. The cover 1102, as the external packaging component of the battery device 100, can effectively prevent the risk of short circuits or electrical interference in the battery system by placing the fourth insulating member.

[0061] Furthermore, the fourth insulating member may be made of a material with good electrical insulation and high temperature resistance, so that it can withstand the heat and mechanical stress generated during the operation of the battery module and maintain a long-term stable insulation effect.

[0062] While various implementations of the present disclosure have been described above, the foregoing description is intended to be illustrative, not exhaustive, and not limited to the disclosed implementations. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described implementations. The terminology used herein is selected to best explain the principles of the implementations, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the various implementations disclosed herein.

Claims

1. A battery device, characterized in that: include: A heat dissipation housing (110) comprises a body (1101) and a cover (1102), wherein the body (1101) and the cover (1102) are coupled to form a receiving cavity; a first insulating member (120), a plurality of second insulating members (130), and a plurality of heat insulating members (140), wherein the first insulating member (120) is arranged on the inner wall of the body (1101); At least one battery assembly (150) is arranged in the accommodating cavity and adjacent to the first insulating member (120), and each battery assembly in the at least one battery assembly (150) includes a plurality of battery cells (1501), the plurality of battery cells (1501) are arranged to be stacked along an arrangement direction (A), and the second insulating member (130) and the heat insulating member (140) are arranged between the plurality of battery cells (1501) to be suitable for isolating the plurality of battery cells (1501); as well as A heat sink (160) is coupled to a side of the at least one battery assembly (150) close to the cover (1102) and is adapted to absorb heat released by the at least one battery assembly (150) so that the heat is transferred to the outside of the heat sink (110) via the heat sink housing (110).

2. The battery device according to claim 1, wherein: Also includes: A third insulating member (170), wherein the at least one battery assembly (150) includes a plurality of battery assemblies, and the third insulating member (170) is arranged between adjacent battery assemblies (150) in a direction perpendicular to the arrangement direction (A), and is suitable for isolating the plurality of battery assemblies.

3. The battery device according to claim 2, characterized in that Also includes: An end plate (180) is coupled to the heat dissipation housing (110) and is suitable for isolating the plurality of battery assemblies (150) along an arrangement direction (A) of the battery cells (1501).

4. The battery device according to any one of claims 1 to 3, characterized in that: Also includes: A partition (190) is arranged between the battery assembly (150) and the cover (1102), and the heat sink (160) is coupled to the partition (190).

5. The battery device according to claim 4, characterized in that Also includes: A sensor is arranged between the battery assembly (150) and the cover (1102), and is suitable for monitoring the status of the plurality of battery cells (1501).

6. The battery device according to any one of claims 1 to 3 and 5, characterized in that: The battery assembly (150) comprises an insulating film (1502) suitable for wrapping a plurality of battery cells (1501).

7. The battery device according to any one of claims 1 to 3 and 5, characterized in that: The distance between adjacent battery cells (1501) in the battery assembly (150) is 5-10 mm.

8. The battery device according to claim 2 or 3, characterized in that: The first insulating member (120), the second insulating member (130) and the third insulating member (170) are all members made of incompressible materials, and the thermal insulation member (140) is a member made of compressible materials.

9. The battery device according to claim 8, characterized in that The first insulating member (120), the second insulating member (130) and the third insulating member (170) are all mica sheets, the thermal insulation member (140) is an aerogel pad, and the heat dissipation member (160) includes a thermally conductive silicone pad.

10. The battery device according to any one of claims 1 to 3 and 5, characterized in that: Also includes: A fourth insulating member is coupled to the inner wall of the cover (1102).

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