Battery pack

Abstract

The utility model relates to a battery pack, comprising: a battery cell, the bottom of which is provided with a first explosion-proof valve; the box body is of a circumferential surrounding structure with openings in the top and the bottom, the battery cell is contained in the box body, and a second anti-explosion valve is arranged on the box body; the first bottom plate is made of an insulating material, is arranged below the battery cell and is provided with an air inlet groove opposite to the first anti-explosion valve; and the second bottom plate is connected to the bottom end of the box body, the second bottom plate and the first bottom plate are arranged in a spaced mode to form a first exhaust channel, and the first exhaust channel communicates with the second anti-explosion valve. According to the technical scheme, the first bottom plate and the second bottom plate form the cavity-shaped first exhaust channel which is used for discharging substances discharged by the battery cell out of the battery pack through the second anti-explosion valve, the first bottom plate is made of an insulating material, the phenomenon that the discharged substances with high heat are in contact with a high-voltage framework made of a metal material of a vehicle body to cause arc discharge and short circuit can be effectively avoided, and the service life of the battery pack is prolonged. Dangerous faults such as ignition and explosion are prevented, and the reliability is good.

Description

Technical Field

[0001] This disclosure relates to the field of battery pack thermal protection technology, and more particularly to a battery pack. Background Technology

[0002] When the cells in a battery pack generate excessive heat, the internal pressure rises rapidly, causing the entire battery pack to expand and posing a risk of thermal runaway. Related technologies incorporate explosion-proof valves on the cells to release hot materials when internal pressure becomes too high. The released hot materials are discharged from the bottom of the battery pack to the outside, achieving thermal runaway protection. However, when high-temperature gases and particles are ejected from the cells, contact with conductive structures may pose a risk of arcing and short circuits, potentially leading to sparks, explosions, and other safety issues affecting the battery pack. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this disclosure provides a battery pack that at least partially solves the problems existing in the related technologies.

[0004] This disclosure provides a battery pack, including: a battery cell with a first explosion-proof valve at its bottom; a housing with a circumferential enclosure structure having openings at the top and bottom, wherein the battery cell is housed within the housing and a second explosion-proof valve is disposed on the housing; a first bottom plate made of insulating material, disposed below the battery cell and having an air inlet groove opposite to the first explosion-proof valve; and a second bottom plate connected to the bottom end of the housing and spaced apart from the first bottom plate to form a first exhaust channel, wherein the first exhaust channel communicates with the second explosion-proof valve.

[0005] Optionally, a buffer is provided on the side of the battery cell, and there is a gap between the buffer and the inner sidewall of the housing to form a second exhaust channel, which is connected between the first exhaust channel and the second explosion-proof valve.

[0006] Optionally, the housing includes: a first sidewall extending along a first direction, on which a valve port is provided, and a second explosion-proof valve is disposed at the valve port; a second sidewall extending along a second direction, the second direction being perpendicular to the first direction; and a buffer member disposed on both sides of the battery cell along the second direction.

[0007] Optionally, the buffer member has a flat surface on the side facing the side wall of the housing, so that the buffer member fits against the inner side wall of the housing.

[0008] Optionally, the buffer member has an inclined surface on the side facing the side wall of the housing, so that the second exhaust channel is formed as an upwardly tapering angular structure.

[0009] Optionally, the second explosion-proof valve is located near the top of the angular structure.

[0010] Optionally, the second explosion-proof valve is located on the opposite side of the enclosure.

[0011] Optionally, the cushioning element is a filled foam.

[0012] Optionally, the first base plate is provided with an air outlet, and the first exhaust channel and the second exhaust channel are connected through the air outlet.

[0013] Optionally, the edge of the first base plate is fixedly connected to the edge of the second base plate by a sealing element.

[0014] Optionally, the first base plate is made of a non-metallic material.

[0015] Optionally, it also includes a heat sink, which is located between the battery cell and the first base plate. The first base plate is attached to the heat sink, and the heat sink has a strip-shaped through hole that avoids the air inlet slot.

[0016] Optionally, a heat-conducting plate is attached between the heat sink and the battery cell.

[0017] Optionally, it also includes a top cover, which is connected to the top of the housing via a seal.

[0018] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0019] Through the above technical solution, the bottom of the box can use a first bottom plate and a second bottom plate arranged at intervals to form a cavity-shaped first exhaust channel, which receives the high temperature and high pressure material discharged from the first explosion-proof valve at the bottom of the battery cell and guides it to the second explosion-proof valve opened on the side wall of the box for discharge to the outside of the battery pack. The first bottom plate located near the battery cell is made of insulating material, which can effectively avoid arcing and short circuit when the high heat material is discharged, thereby preventing dangerous faults such as sparking and explosion, and the battery pack has good safety performance.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0022] Figure 1 This is a schematic diagram of the structure of a battery pack according to an exemplary embodiment.

[0023] Figure 2 This is a cross-sectional view of a battery pack according to an exemplary embodiment.

[0024] Figure 3 This is a structural schematic diagram of a box and a base plate according to an exemplary embodiment.

[0025] Explanation of reference numerals in the attached figures

[0026] 1-Box body, 101-First bottom plate, 1011-Air inlet slot, 1012-Air outlet, 102-Second bottom plate, 103-Heat dissipation plate, 1031-Strip through hole, 1032-Gathering area, 104-Heat conduction plate, 11-First side wall, 111-Valve port, 12-Second side wall, 13-Buffer component, 14-First exhaust channel, 15-Second exhaust channel, 2-Battery cell, 3-Second explosion-proof valve, 4-Sealing component, 5-Top cover. Detailed Implementation

[0027] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0028] This disclosure provides a battery pack, with reference to... Figures 1 to 3 The battery pack includes a housing 1, battery cells 2, a first base plate 101, and a second base plate 102. The housing 1 is a circumferential enclosure structure with openings at the top and bottom. The battery cell 2 can be housed inside the housing 1. A first explosion-proof valve is provided at the bottom of the battery cell 2 to discharge the high-temperature and high-pressure substances inside. A first bottom plate 101 and a second bottom plate 102 can be arranged sequentially below the battery cell 2. The second bottom plate 102 is connected to the bottom end of the housing 1. The two can be spaced apart to form a first exhaust channel 14. An air inlet groove 1011 is provided on the first bottom plate 101, which is opposite to the first explosion-proof valve. This allows the high-temperature and high-pressure substances of the battery cell 2 to enter the first exhaust channel 14 through the air inlet groove 1011. After entering the first exhaust channel 14, the substances can be guided by the first exhaust channel 14 to the second explosion-proof valve 3 located on the housing 1, and discharged from the second explosion-proof valve 3 to the external space of the battery pack. The first bottom plate 101 can be made of insulating material to prevent it from becoming conductive when receiving the high-temperature and high-pressure substances discharged from the battery cell 2, which could lead to arcing and short circuits, and thus cause dangerous faults such as sparking or explosion.

[0029] In the above embodiment, the first explosion-proof valve installed at the bottom of the battery cell 2 can promptly discharge the high-temperature and high-pressure contents to the bottom of the battery pack when the battery cell 2 experiences thermal runaway and internal heat accumulates rapidly. Since the discharged material is mainly high-temperature gas and conductive polymer, direct contact with the metal conductive structure may cause the target to become charged, leading to arcing, short circuits, or even sparking, posing a certain safety hazard. A first exhaust channel 14 with a cavity structure can be formed by using a first base plate 101 made of insulating material and a second base plate 102 connected to the bottom of the housing 1 at intervals. The first base plate 101, located close to the battery cell 2, can isolate the ejected material from the battery cell 2, preventing the first exhaust channel 14 from becoming charged when guiding the discharged material, effectively preventing the aforementioned sparking or even explosion. Furthermore, the first exhaust channel 14 is connected to the second explosion-proof valve 3 located on the housing 1, which can quickly discharge the discharged material from the battery cell 2 to the external space of the battery pack, providing good reliability.

[0030] Through the above technical solution, the bottom of the housing 1 can use a first bottom plate 101 and a second bottom plate 102 arranged at intervals to form a cavity-shaped first exhaust channel 14, which receives the high-temperature and high-pressure material discharged from the first explosion-proof valve at the bottom of the battery cell 2 and guides it to the second explosion-proof valve 3 opened on the side wall of the housing 1 for discharge to the outside of the battery pack. The first bottom plate 101 used to receive the discharge from the battery cell is made of insulating material, which can effectively prevent the high-temperature discharge from contacting the high-voltage structure of the vehicle body metal material, causing the battery cell 2 casing or bottom plate to become electrified and triggering arcing and short circuit, thereby preventing dangerous faults such as sparking and explosion, and has good reliability.

[0031] In some embodiments, refer to Figure 1 and Figure 2 A buffer 13 may be provided on the side of the battery cell 2. A gap may exist between the buffer 13 and the inner wall of the housing 1 to form a second exhaust channel 15. The second exhaust channel 15 can connect the first exhaust channel 14 and the second explosion-proof valve 3, used to reverse the direction of the discharge from the battery cell 2 and guide the discharge from the side wall of the housing 1 to the second explosion-proof valve 3. The second explosion-proof valve 3 can then discharge the high-temperature, high-pressure discharge to the outside of the battery pack. In this embodiment, the buffer 13 is used to house the battery cell 2, ensuring that the battery cell 2 is stably placed inside the housing 1 without easily shaking, exhibiting good stability. The buffer 13 can also be made of insulating material to prevent arcing when the battery cell 2 discharges its contents. Using insulating material as the buffer 13 can also effectively protect against the aforementioned phenomenon from the battery cell 2 end.

[0032] For example, refer to Figures 1 to 3 The housing 1 may include a first sidewall 11, a second sidewall 12, and a buffer member 13, wherein the first sidewall 11 may be along... Figure 1 or Figure 3 Extending in the first direction, a valve port 111 can be opened on the first side wall 11, and a second explosion-proof valve 3 can be installed on the valve port 111. The second side wall 12 can extend along... Figure 1 or Figure 3 The second direction extends from the first direction, and the second direction is perpendicular to the first direction, so that the battery pack housing 1 can be formed into a square structure with good stability. The buffer 13 can be arranged on both sides of the battery cell 2 along the second direction to provide stable protection for the battery cell 2 from both sides and ensure the safe placement of the battery cell 2. In this embodiment, the buffer 13 can be arranged along the first direction and in the same direction as the first sidewall 11, so that the buffer 13 and the first sidewall 11 can form a second exhaust channel 15 in the entire extension direction, ensuring the smooth discharge of the contents of the battery cell 2.

[0033] For example, refer to Figure 1 and Figure 2 The side of the buffer 13 facing the side wall of the housing 1 can be formed with a flat surface so that the buffer 13 can fit against the inner side wall of the housing 1. This allows the battery cell 2 to obtain better protection in the second direction through the stable fit between the buffer 13 and the housing 1, preventing shaking in the second direction and changing the shape and structure of the second exhaust channel 15, which would affect the flow of high temperature and high pressure substances in the exhaust channel of the battery cell 2, and ensuring that the battery cell 2 will not shake easily in the buffer 13.

[0034] For example, refer to Figure 1 and Figure 2 The buffer 13 can be formed with a slope on the side facing the side wall of the housing 1, so that the second exhaust channel 15 can be formed into an upwardly tapering angular structure, which improves the spatial stability of the second exhaust channel 15 and ensures its spatial strength. Moreover, the angular structure tapers in the height direction, which can ensure that the space volume of the second exhaust channel 15 is sufficient without occupying too much space in the battery pack. It has a good space utilization rate and reasonable layout. In addition, the slope can also guide the airflow to a certain extent, so that the ejected material can be discharged to the outside of the battery pack to the maximum extent.

[0035] For example, refer to Figure 1 and Figure 2 The second explosion-proof valve 3 can be located near the top of the angled structure. In this embodiment, for the natural upward flow of high-temperature and high-pressure gas into space, setting the second explosion-proof valve 3 to a high position facilitates the flow guidance of the high-temperature and high-pressure exhaust material, making it easier for it to be discharged and improving the protection efficiency against thermal runaway.

[0036] In some embodiments, refer to Figures 1 to 3The second explosion-proof valve 3 can be set on the opposite side of the housing 1 so that the discharge material in the cell 2 can be discharged evenly from the opposite sides of the battery pack at the same time, thereby improving the discharge rate, effectively mitigating thermal runaway, ensuring the safety of the battery pack, and avoiding damage to other structures in the vehicle body caused by concentrated discharge.

[0037] For example, the buffer 13 can be a filled foam, which has rapid shaping and good structural strength, and can also have an insulating effect. While providing physical impact protection for the battery cell 2, it can effectively prevent the casing of the battery cell 2 from becoming charged and prevent arcing and short circuits from occurring.

[0038] In some embodiments, refer to Figure 1 An air outlet 1012 may be provided on the first base plate 101, through which the first exhaust channel 14 and the second exhaust channel 15 can be connected. In this embodiment, the air outlet 1012 may be located at the middle of the edge of the first base plate 101, so that the exhaust material flowing through the air outlet 1012 to the second exhaust channel 15 can be evenly filled into the space of the second exhaust channel 15. In other embodiments, multiple air outlets 1012 may be provided, and the multiple air outlets 1012 may be evenly distributed along the edge of the first base plate 101, which can also improve the effect of evenly guiding the exhaust material in the first exhaust channel 14 into the second exhaust channel 15, ensuring the smooth flow of the exhaust material.

[0039] In some embodiments, refer to Figure 1 and Figure 2 The edge of the first base plate 101 can be fixedly connected to the edge of the second base plate 102 via a sealing member 4, thereby forming a well-sealed cavity structure between the first base plate 101 and the second base plate 102. This cavity can be at least a part of the first exhaust channel 14, which can accommodate a large amount of discharge in a short time when the contents of the battery cell 2 are rapidly discharged, and can also provide buffering when the discharge rate is fast. It should be noted that the type of sealing member 4 is not specifically limited in this embodiment, as long as it can ensure a stable connection and reliable seal between the first base plate 101 and the second base plate 102, which will not be elaborated here.

[0040] In some embodiments, the first base plate 101 may be made of a non-metallic material to reduce weight while providing good insulation. Since non-metallic materials are relatively inexpensive compared to other types of insulating materials, this also effectively saves on usage costs. It is understood that the first base plate 101 is made of a high-temperature resistant insulating material to withstand the high temperatures of the ejected material.

[0041] In some embodiments, refer to Figures 1 to 3The battery pack may also include a heat sink 103, which is located between the battery cell 2 and the first base plate 101 to provide heat dissipation for the battery cell 2. The first base plate 101 and the heat sink 103 can be fitted together, and the heat sink 103 may have a strip-shaped through hole 1031, which is at least not smaller than the opening shape of the air inlet groove 1011 to avoid obstructing the flow of the discharge from the battery cell 2. The heat sink 103 is usually made of conductive material. When it is placed below the battery cell 2, the ejected material is likely to come into contact with the conductive heat sink 103, which may cause arcing risk. In this embodiment, the heat sink 103 is located between the battery cell 2 and the insulating first base plate 101, so that the heat sink 103 is protected by the first base plate 101, which can effectively avoid the risk of arcing.

[0042] In other embodiments, the heat sink 103 can be a harmonica tube type water-cooled plate, and the end of the heat sink 103 near the second side wall 12 can be a busbar area 1032. The busbar area 1032 can be connected to the outside of the housing 1 through a pipe to provide better cooling and heat dissipation effect for the battery cell 2.

[0043] In some embodiments, refer to Figure 1 A heat-conducting plate 104 can be attached between the heat sink 103 and the battery cell 2 to transfer heat from the battery cell 2 to the heat sink 103, thereby accelerating the heat dissipation effect. In this embodiment, there can be multiple heat-conducting plates 104. These multiple heat-conducting plates 104 can be freely attached to different heat dissipation areas of the battery cell 2 while avoiding the air intake slot 1011. Furthermore, the multiple heat-conducting plates 104 can be positioned to avoid the current collection area 1032, thereby improving the heat dissipation effect of the harmonica tube type water-cooled plate.

[0044] In some embodiments, refer to Figure 1 The battery pack may also include a top cover 5, which can be connected to the top edge of the housing 1 via a sealing element 4 to seal the internal space of the housing 1 from above, ensuring the stability of the internal structure of the battery pack and its safe use.

[0045] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of how this disclosure can be practiced. In this regard, terms indicating direction or positional relationship, such as “center,” “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” can be used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0046] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0047] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0048] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.

[0049] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0051] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0052] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0053] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0054] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A battery pack, characterized in that, include: The battery cell has a first explosion-proof valve at its bottom. The enclosure is constructed as a circumferentially enclosed structure with openings at the top and bottom. The battery cell is housed within the enclosure, and a second explosion-proof valve is provided on the enclosure. The first base plate is made of insulating material and is located below the battery cell. It has an air inlet slot opposite to the first explosion-proof valve. as well as The second base plate is connected to the bottom end of the housing and is spaced apart from the first base plate to form a first exhaust channel, which is connected to the second explosion-proof valve.

2. The battery pack according to claim 1, characterized in that, A buffer is provided on the side of the battery cell, and there is a gap between the buffer and the inner side wall of the housing to form a second exhaust channel. The second exhaust channel is connected between the first exhaust channel and the second explosion-proof valve.

3. The battery pack according to claim 2, characterized in that, The enclosure includes: A first sidewall extends along a first direction, and a valve port is provided on the first sidewall, with the second explosion-proof valve disposed at the valve port; A second sidewall extends along a second direction, which is perpendicular to the first direction; and The buffer is disposed on both sides of the battery cell along the second direction.

4. The battery pack according to claim 2, characterized in that, The buffer component has a flat surface on the side facing the side wall of the housing, so that the buffer component fits against the inner side wall of the housing.

5. The battery pack according to claim 2, characterized in that, The buffer component has an inclined surface on the side facing the side wall of the housing, so that the second exhaust channel is formed into an upwardly tapering angular structure.

6. The battery pack according to claim 5, characterized in that, The second explosion-proof valve is located near the top of the angular structure.

7. The battery pack according to claim 1, characterized in that, The second explosion-proof valve is located on the opposite side of the enclosure.

8. The battery pack according to claim 2, characterized in that, The cushioning component is filled with expanded foam.

9. The battery pack according to claim 2, characterized in that, The first base plate is provided with an air outlet, and the first exhaust channel and the second exhaust channel are connected through the air outlet.

10. The battery pack according to claim 1, characterized in that, The edge of the first base plate is fixedly connected to the edge of the second base plate by a sealing element.

11. The battery pack according to claim 1, characterized in that, The first base plate is made of non-metallic material.

12. The battery pack according to claim 1, characterized in that, It also includes a heat sink, which is located between the battery cell and the first base plate. The first base plate is attached to the heat sink, and the heat sink has a strip-shaped through hole that avoids the air inlet slot.

13. The battery pack according to claim 12, characterized in that, A heat-conducting plate is attached between the heat sink and the battery cell.

14. The battery pack according to claim 1, characterized in that, It also includes a top cover, which is connected to the top of the housing via a seal.

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