Battery pack and powered device

Abstract

The present disclosure provides a battery pack, and relates to the field of batteries. The battery pack comprises a first heat exchange plate and a battery group. The first heat exchange plate comprises a first plate body and a second plate body which are integrally formed. The first plate body is perpendicular to the height direction of the battery pack, and the second plate body is perpendicular to the width direction of the battery pack. The first plate body comprises two plate body parts located on the opposite sides of the second plate body in the width direction. The battery group comprises two rows of batteries respectively located on the opposite sides of the second plate body in the width direction. Each row of batteries comprises a plurality of batteries arranged along the length direction of the battery pack. Each battery has an adjacent first battery side and a second battery side. The first battery side is opposite to and in heat exchange coupling with the corresponding plate body part of the first plate body, and the second battery side is opposite to and in heat exchange coupling with the second plate body. Accordingly, the number of independent components can be effectively reduced, the assembly process of the battery pack can be simplified, the manufacturing cost can be reduced, and the production efficiency and the stability of the overall structure can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of batteries, and more specifically to a battery pack and an electrical device having the battery pack. Background Technology

[0002] In a battery pack, multiple battery cells are electrically connected in series or parallel to store and release electrical energy. During charging and discharging, the batteries inside the pack generate a large amount of heat due to chemical reactions, causing the temperature to rise. This can lead to thermal runaway and accelerate battery performance degradation. To effectively dissipate heat, multiple cooling plates are typically installed inside the battery pack to remove heat through heat conduction. However, having multiple cooling plates inside the battery pack complicates its structure, increases manufacturing costs, and reduces production efficiency. Utility Model Content

[0003] In view of this, the present disclosure provides a battery pack to at least solve or improve the problems of high manufacturing cost and low production efficiency of conventional battery packs.

[0004] The battery pack disclosed herein includes a first heat exchange plate and a battery pack. The first heat exchange plate includes an integrally formed first plate body and a second plate body. The first plate body is perpendicular to the height direction of the battery pack, and the second plate body is perpendicular to the width direction of the battery pack. The first plate body includes two plate body portions located on opposite sides of the second plate body in the width direction. The battery pack includes two rows of batteries located on opposite sides of the second plate body in the width direction. Each row of batteries includes a plurality of batteries arranged along the length direction of the battery pack. Each battery has an adjacent first battery side and a second battery side. The first battery side faces and is heat-coupled with the corresponding plate body portion of the first plate body, and the second battery side faces and is heat-coupled with the second plate body.

[0005] In this disclosure, by integrally forming the first heat exchange plate with the first plate and the second plate, the number of independent components can be effectively reduced. This not only simplifies the battery pack assembly process and reduces manufacturing costs, but also improves production efficiency and the overall structural stability and reliability. Furthermore, the integrated structure of the first heat exchange plate allows two adjacent sides of each battery to simultaneously face and heat-couple with different parts of the first heat exchange plate, effectively increasing the contact area between the battery and the first heat exchange plate. This improves heat transfer efficiency, ensures uniform temperature distribution during charging and discharging of the battery pack, avoids localized overheating, and thus ensures the battery pack's lifespan and safety reliability.

[0006] This disclosure also provides an electrical device that includes the battery pack described above. Attached Figure Description

[0007] It should be understood that the following figures only illustrate certain embodiments of this disclosure and should not be construed as limiting the scope.

[0008] It should be understood that the same or similar reference numerals are used in the accompanying drawings to denote the same or similar elements.

[0009] It should be understood that the accompanying drawings are only schematic, and the dimensions and scales of the elements in the drawings are not necessarily precise.

[0010] Figure 1 This is a schematic diagram of the structure of a battery pack according to an embodiment of the present disclosure.

[0011] Figure 2 for Figure 1 A magnified view of part A in the middle.

[0012] Figure 3 This is a schematic diagram of the structure of a battery pack according to another embodiment of the present disclosure.

[0013] Figure 4 for Figure 1 A partial structural diagram of the battery pack.

[0014] Figure 5 for Figure 1 A schematic diagram of the structure of another heat exchange plate in the battery pack.

[0015] Figure 6 This is a schematic diagram of the structure of a battery pack according to another embodiment of the present disclosure.

[0016] Figure 7 This is a schematic diagram of the structure of an electrical device according to an embodiment of the present disclosure.

[0017] Figure Labels Battery pack - 100; Battery - 10; First heat exchange plate - 20, 20a, 20b, 20d, 20e; First plate body - 21, 21a, 21b, 21d, 21e; ​​Heat conductor - 23a, 23b; Second cold plate - 32; Third cold plate - 33; Fourth heat exchange plate - 34; Third plate body - 341; Fourth plate body - 342; Fifth heat exchange plate - 35; Electrical equipment - 200. Detailed Implementation

[0018] Numerous specific details are set forth below to provide an understanding of the structure, function, and use of the embodiments described and illustrated in the specification and figures. It is to be understood that the embodiments described and illustrated herein are non-limiting examples, and thus it will be appreciated that the particular structural and functional details disclosed herein are representative and exemplary. Variations and changes may be made to these embodiments without departing from the scope of the claims.

[0019] <Example Battery Pack> refer to Figure 1According to one embodiment of this disclosure, a battery pack 100 may include a battery group composed of multiple batteries 10 connected in series and parallel, and integrates a battery management system (BMS), a thermal management system, an electrical connection system (high-voltage / low-voltage connectors, wiring harnesses, etc.), structural components (casing, brackets, etc.), and protective components. The battery pack 100 may also include a housing, in which the aforementioned components are housed within an internal space and sealed by a top cover, forming a complete functional unit capable of directly outputting electrical energy. The housing effectively prevents external collisions, compression, and vibrations from affecting the multiple batteries 10 and other components such as the BMS inside the housing. Furthermore, the housing also prevents external moisture or dust and other contaminants from entering the housing. The battery pack 100 can serve as a rechargeable battery and a power source for new energy vehicles, primarily used for storing and providing electrical energy.

[0020] A battery pack can be formed by connecting multiple batteries 10 with similar capacity and internal resistance. For example, multiple batteries 10 can be connected in series to form a battery pack, or multiple batteries 10 can be connected in parallel to form a battery pack, or a portion of multiple batteries 10 can be connected in series and another portion can be connected in parallel to form a battery pack.

[0021] The battery pack 100 may also include conductive elements. The conductive elements can electrically connect the terminals of at least two batteries 10, i.e., the output terminals of the battery current, to enable multiple batteries 10 to be connected in series or in parallel.

[0022] Battery 10 is the basic energy storage unit in battery pack 100, used to store and release electrical energy, and capable of converting chemical energy into electrical energy (discharging process) or storing electrical energy as chemical energy (charging process) through internal chemical reactions. Multiple batteries 10 can be electrically connected in series or parallel to meet different voltage, capacity, and power requirements. In some embodiments, battery 10 is a prismatic battery. In other embodiments, battery 10 is a cylindrical battery. In other embodiments, battery 10 is a pouch battery. In other embodiments, battery 10 may also be other types of batteries. This disclosure does not limit its type.

[0023] During charging and discharging, battery 10 generates heat due to internal resistance and internal chemical reactions, especially during fast charging and high-power discharging, which can lead to heat accumulation. If this heat cannot be dissipated in a timely and effective manner, the temperature of battery 10 will rise sharply. Overheating of battery 10 will accelerate performance degradation, reduce its lifespan, and may even cause thermal runaway.

[0024] The battery pack 100 may further include a first heat exchange plate 20. The first heat exchange plate 20 may include an integrally formed first plate 21 and a second plate 22. The first plate 21 is perpendicular to the height direction of the battery pack 100, and the second plate 22 is perpendicular to the width direction of the battery pack 100. The first plate 21 may include two plate portions located on opposite sides of the second plate 22 in the width direction. The battery pack may include two rows of batteries located on opposite sides of the second plate 22 in the width direction. Each row of batteries includes a plurality of batteries arranged along the length direction of the battery pack. Each battery 10 has an adjacent first battery side and a second battery side. The first battery side faces and is heat-coupled with the corresponding plate portion of the first plate 21, and the second battery side faces and is heat-coupled with the second plate 22. The height direction, width direction, and length direction are all perpendicular to each other. For ease of description, in the accompanying drawings of this disclosure, Z is used to indicate the height direction, X is used to indicate the width direction, and Y is used to indicate the length direction.

[0025] The first heat exchange plate 20 is provided with inlet and outlet ports and flow channels, with the flow channels located inside the first heat exchange plate. The flow channels inside the first heat exchange plate allow coolant (such as an aqueous ethylene glycol solution) to circulate along a predetermined path. Coolant flows into the flow channels inside the first heat exchange plate from the inlet port. When the battery 10 generates heat, this heat is conducted to the first heat exchange plate through the contact surface between the battery 10 and the first heat exchange plate, and is then carried away by the continuously flowing coolant in the flow channels through convection heat transfer. Then, this heat-carrying coolant flows out from the corresponding outlet port, thereby achieving cooling and temperature control of the battery 10, ensuring the performance and service life of the battery pack 100. In some embodiments, the first plate and the second plate share a common inlet and outlet port, and their internal flow channels are interconnected. In other embodiments, the first plate and the second plate are provided with independent inlet and outlet ports and unconnected flow channels. In other embodiments, the inlet and outlet ports and flow channels of the first plate and the second plate have other structures, which are not limited in this disclosure.

[0026] In this disclosure, by integrally forming the first heat exchange plate 20 with the first plate 21 and the second plate 22, the number of independent components can be effectively reduced. This not only simplifies the assembly process of the battery pack 100 and reduces manufacturing costs, but also improves production efficiency and the stability and reliability of the overall structure. Furthermore, the integral structure of the first heat exchange plate 20 allows two adjacent sides of each battery 10 to simultaneously face and heat-couple with different parts of the first heat exchange plate 20, effectively increasing the contact area between the battery 10 and the first heat exchange plate 20. This improves heat conduction efficiency, ensures uniform temperature distribution during charging and discharging of the battery pack, avoids localized overheating, and thus ensures the service life and safety reliability of the battery pack 100.

[0027] refer to Figure 1The battery pack 100 may further include a plurality of first heat exchange plates 20 stacked along the height direction and a plurality of battery packs corresponding to the plurality of first heat exchange plates 20 respectively. The battery 10 located between two adjacent first heat exchange plates 20 also has a third battery side opposite to the side of the first battery. The third battery side is directly opposite to and thermally coupled to the first plate body 21a of another first heat exchange plate 20a.

[0028] According to the above structure, by arranging the multiple first heat exchange plates 20 and multiple battery packs stacked along the height direction accordingly, the third battery side of the battery 10 located between two adjacent first heat exchange plates 20 can contact the first plate body 21a of the upper first heat exchange plate 20a, while its first battery side and second battery side can respectively face and heat-couple with the first plate body 21b and second plate body 22b of the lower first heat exchange plate 20b. This allows the three sides of the battery 10 located between two adjacent first heat exchange plates 20 to simultaneously face and heat-couple with the heat exchange plates, thereby increasing the effective heat exchange area, improving the heat conduction efficiency and the overall heat dissipation capacity of the battery pack 100, and effectively avoiding local overheating.

[0029] In another embodiment, reference Figure 1 The second plate 22 extends upward from the first plate 21 along the height direction, and the battery pack is supported on the first plate 21.

[0030] Further, refer to Figure 1 and Figure 2 A heat conductor 23a is provided between the side of the third battery and the first plate 21a of the first heat exchange plate 20a above the battery 10. In some embodiments, the heat conductor 23a is integrally formed. In other embodiments, the heat conductor 23a is a plurality of heat-conducting strips spaced apart along the width direction. In other embodiments, the heat conductor 23a is a plurality of heat-conducting strips spaced apart along the length direction. In other embodiments, the heat conductor has other structures, which are not limited in this disclosure. By way of example only, the heat conductor 23a is a thermally conductive adhesive, a thermally conductive sheet, or a thermally conductive gel.

[0031] Under the influence of its own weight, a gap will form between the side of the third battery and the first plate 21a above it. Due to the poor thermal conductivity of the air in the gap, a thermal resistance layer will form, hindering the effective transfer of heat from the battery 10 to the heat exchange plate and reducing the heat transfer efficiency. Therefore, the battery pack 100 with the above structure, by providing a heat conductor 23a between the side of the third battery and the first plate 21a above it, can effectively fill the gap, enhance the heat transfer path, improve the heat transfer efficiency, and thus improve the overall heat exchange efficiency of the battery pack 100.

[0032] In another embodiment, reference Figure 1The battery pack 100 may also include a second cold plate 32 perpendicular to the height direction. The second cold plate 32 is located above the top battery pack, and the side of the third battery of the top battery pack, which is opposite to the side of its first battery, is directly opposite to the second cold plate 32 and is heat-coupled. By way of example only, a heat conductor 23a is provided between the side of the third battery of the top battery pack and the second cold plate 32 above it.

[0033] Because the batteries 10 in the top layer of the battery pack only face and heat-couple with different parts of the first heat exchange plate 20a through the sides of the first and second batteries, the heat dissipation path of the top layer battery pack is limited, which may cause local overheating and affect the service life and safety reliability of the battery pack 100. Therefore, a second cold plate 32 perpendicular to the height direction is provided above the top layer battery pack, so that the third battery side of the top layer battery pack faces the second cold plate 32 and forms heat exchange coupling. This increases the heat exchange contact surface of the top layer battery pack, improves the heat dissipation efficiency of the top layer battery pack, effectively prevents heat accumulation at the top, and thus improves the temperature uniformity and safety of the entire battery pack 100.

[0034] In another embodiment, reference Figure 3 The second plate 22 extends downward from the first plate 21 along the height direction and is located on the next layer of the first plate supporting the battery pack between two adjacent first plates 21.

[0035] Further, refer to Figure 3 A heat conductor 23b is provided between the side of the third battery and the first plate 21e of the first heat exchange plate 20e below the battery 10. In some embodiments, the heat conductor 23b is integrally formed. In other embodiments, the heat conductor 23b is a plurality of heat-conducting strips spaced apart along the width direction. In other embodiments, the heat conductor 23b is a plurality of heat-conducting strips spaced apart along the length direction. In other embodiments, the heat conductor 23b has other structures, which are not limited in this disclosure. By way of example only, the heat conductor 23b is a thermally conductive adhesive, a thermally conductive sheet, or a thermally conductive gel.

[0036] By providing a heat conductor 23b between the side of the third battery and the first plate 21e of the first heat exchange plate 20e below the battery 10, the gap between the side of the third battery and the first plate 21e below can be effectively filled, the heat conduction path can be enhanced, the heat conduction efficiency can be improved, and thus the overall heat exchange efficiency of the battery pack 100 can be improved.

[0037] In another embodiment, reference Figure 3The battery pack 100 may also include a third cold plate 33 perpendicular to the height direction. The third cold plate 33 is located below the bottom battery pack, and the side of the third battery of the bottom battery pack 10 opposite to the side of its first battery is directly opposite to the third cold plate 33 and thermally coupled. By way of example only, a heat conductor 23b is provided between the side of the third battery of the bottom battery pack 10 and the third cold plate 33 below.

[0038] Because the batteries 10 in the bottommost battery pack only face and heat-couple with different parts of the first heat exchange plate 20 through the sides of the first and second batteries, the heat dissipation path of the bottommost battery pack is limited. This may cause localized overheating of the bottommost battery pack, thereby affecting the service life and safety reliability of the battery pack 100. Therefore, a third cold plate 33 perpendicular to the height direction is provided below the bottommost battery pack, so that the third battery side of the bottommost battery pack faces the third cold plate 33 and forms heat exchange coupling. This increases the heat exchange contact surface of the bottommost battery pack, improves the heat dissipation efficiency of the bottommost battery pack, effectively prevents heat accumulation at the bottom, and thus improves the temperature uniformity and safety of the entire battery pack 100.

[0039] In another embodiment, a plurality of first heat exchange plates 20 are assembled together. By way of example only, the plurality of first heat exchange plates 20 are assembled together with screws.

[0040] During the assembly of the battery pack 100, multiple first heat exchange plates 20 and multiple battery packs corresponding to each first heat exchange plate 20 are sequentially and alternately stacked and precisely aligned along the height direction. This effectively reduces assembly errors between layers along the height direction, ensuring tight contact between each battery pack and its corresponding first heat exchange plate, thereby improving heat transfer efficiency. Furthermore, assembling multiple first heat exchange plates 20 together enhances the overall structural strength and reliability of the battery pack 100. Multiple first heat exchange plates 20 can be manufactured individually; if one first heat exchange plate 20 is damaged or leaks, it is not necessary to replace the entire set of first heat exchange plates 20, simplifying the maintenance process and reducing maintenance costs.

[0041] Further, refer to Figure 4 The distance between two adjacent first heat exchange plates 20 in the height direction is D1, in mm, and the dimension of the battery located between the two first heat exchange plates 20 in the height direction is H1, in mm, where 0.84 ≤ H1 / D1 ≤ 0.99. Preferably, 0.86 ≤ H1 / D1 ≤ 0.97. More preferably, 0.88 ≤ H1 / D1 ≤ 0.95. Alternatively, the ratio H1 / D1 can also be 0.85, 0.87, 0.9, 0.92, or 0.94. By way of example only, 170 mm ≤ H1 ≤ 200 mm, and / or 171 mm ≤ D1 ≤ 204 mm.

[0042] Within the reasonable range of 0.84 ≤ H1 / D1 ≤ 0.99, a smaller gap can be formed between the battery 10 located between the two first heat exchange plates 20 and the two adjacent first heat exchange plates 20, thereby enhancing the heat transfer efficiency between the battery 10 and the two first heat exchange plates 20. If the ratio H1 / D1 is too small, that is, the distance D1 between the two adjacent first heat exchange plates 20 in the height direction is too large, the gap between the battery 10 located between the two first heat exchange plates 20 and the two adjacent first heat exchange plates 20 will be too large. Due to the poor thermal conductivity of the air in the gap, a thermal resistance layer will be formed, which will hinder the effective transfer of heat from the battery 10 to the heat exchange plates, thereby reducing the heat transfer efficiency.

[0043] In another embodiment, reference Figure 5 The battery pack 100 may further include a fourth heat exchange plate 34 assembled with a plurality of first heat exchange plates 20. The fourth heat exchange plate 34 is located at one end of the plurality of first heat exchange plates 20 in the height direction and is stacked thereon. The fourth heat exchange plate 34 includes two integrally formed third plate bodies 341 and a fourth plate body 342. The two third plate bodies 341 are perpendicular to the height direction and spaced apart along the height direction, and the fourth plate body 342 is located between the two third plate bodies 341 and perpendicular to the width direction. One third plate body 341 of the fourth heat exchange plate 34 is spaced apart in the height direction from the first plate body 21 of the nearest first heat exchange plate 20 and is in contact with the second plate body 22 of the nearest first heat exchange plate 20. In some embodiments, the fourth heat exchange plate 34 is located at the top end of the plurality of first heat exchange plates 20 in the height direction. In another embodiment, the fourth heat exchange plate 34 is located at the bottom end of the plurality of first heat exchange plates 20 in the height direction.

[0044] According to the above structure, by placing the fourth heat exchange plate 34, comprising two third plates 341 and one fourth plate 342, at the top or bottom of the plurality of first heat exchange plates 20, the batteries of the top or bottom battery pack can have three effective contact surfaces with the heat exchange plates. This increases the contact area between the battery 10 and the heat exchange plates, improves the heat transfer efficiency of the battery 10, and prevents heat from accumulating at the top or bottom of the battery pack 100, thus avoiding localized overheating. Furthermore, assembling the plurality of first heat exchange plates 20 and the fourth heat exchange plate 34 together ensures the strength and stability of the overall structure of the battery pack 100. Integrating the two third plates 341 and the fourth plate 342 into a single fourth heat exchange plate 34 also simplifies the assembly process, improves production efficiency, and reduces manufacturing costs.

[0045] In another embodiment, a plurality of first heat exchange plates 20 are integrally formed.

[0046] Since the multiple heat exchange plates 20 are formed as a single piece, during the assembly process of the battery pack 100, it is only necessary to install the multiple battery packs into the corresponding assembly positions between adjacent first heat exchange plates 20. This can simplify the assembly process, improve production efficiency, reduce the number of parts, effectively avoid the cumulative tolerance of multiple parts assembly, and reduce manufacturing costs.

[0047] Further, refer to Figure 4 The distance between two adjacent first heat exchange plates 20 in the height direction is D1, in mm. The dimension of the battery 10 located between the two first heat exchange plates 20 in the height direction is H1, in mm, and 0.84 ≤ H1 / D1 ≤ 0.98. Preferably, 0.86 ≤ H1 / D1 ≤ 0.96. More preferably, 0.88 ≤ H1 / D1 ≤ 0.94. Alternatively, the ratio H1 / D1 can also be 0.85, 0.9, 0.92, or 0.95. By way of example only, 170mm ≤ H1 ≤ 200mm, and / or 175mm ≤ D1 ≤ 204mm.

[0048] Within the reasonable range of 0.84 ≤ H1 / D1 ≤ 0.98, a smaller gap can be formed between the battery 10 located between the two first heat exchange plates 20 and the two adjacent first heat exchange plates 20, thereby enhancing the heat transfer efficiency between the battery 10 and the two first heat exchange plates 20. If the ratio H1 / D1 is too small, that is, the distance D1 between the two adjacent first heat exchange plates 20 in the height direction is too large, the gap between the battery 10 located between the two first heat exchange plates 20 and the two adjacent first heat exchange plates 20 will be too large. Due to the poor thermal conductivity of the air in the gap, a thermal resistance layer will be formed, which will hinder the effective transfer of heat from the battery 10 to the heat exchange plates, thereby reducing the heat transfer efficiency.

[0049] In another embodiment, reference Figure 1 and Figure 3 The battery pack 100 may also include a fifth heat exchange plate 35 integrally formed with the plurality of first heat exchange plates 20. The fifth heat exchange plate 35 is located at one end of the plurality of first heat exchange plates 20 in the height direction and is stacked with them. The fifth heat exchange plate 35 is perpendicular to the height direction and is spaced apart in the height direction from the first plate body 21 of the nearest first heat exchange plate 20 and is in contact with the second plate body 22 of the nearest first heat exchange plate 20.

[0050] According to the above structure, by providing a fifth heat exchange plate 35 at one end of the multiple first heat exchange plates 20 along the height direction, the batteries of the top and bottom battery packs can have three effective contact surfaces with the heat exchange plates, increasing the contact area between the battery 10 and the heat exchange plates and improving the heat transfer efficiency of the battery 10. Furthermore, the multiple first heat exchange plates 20 and the fifth heat exchange plate 35 are integrally formed, ensuring the strength and stability of the overall structure of the battery pack 100, reducing the number of parts, simplifying the assembly process, and improving production efficiency.

[0051] refer to Figure 6 The first heat exchange plate 20 includes two first plates 21. The two first plates 21 are spaced apart in the height direction, and a second plate 22 is located between the two first plates 21. The two first plates 21 and the second plate 22 are integrally formed, and the battery pack is located between the two first plates 21.

[0052] According to the above structure, the battery 10 in the battery pack can simultaneously form three effective heat exchange contact surfaces with the two first plates 21 and the second plate 22, thereby improving the heat dissipation efficiency of the battery 10. In addition, the two first plates 21 and the second plate 22 located between them are integrally formed, which can simplify the assembly process, reduce the number of parts, reduce manufacturing costs, and improve production efficiency.

[0053] <Example Electrical Equipment> This disclosure also provides an electrical device 200, which may include the battery pack described above.

[0054] By way of example only, electrical equipment can be, but is not limited to, vehicles, ships, aircraft, household appliances, and industrial equipment. For example, vehicles can be passenger cars, trucks, forklifts, construction vehicles, etc.

[0055] In addition, the electrical equipment 200 can also be used for the storage, conversion and release of recyclable electrical energy.

[0056] In a non-restrictive example, refer to Figure 7 The electrical equipment 200 can be an electric vehicle 200, and the battery pack 100 can be used as a power source to provide power to the electric vehicle.

[0057] It should be noted that the elements described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0058] It should be understood that multiple components and / or parts can be provided by a single integrated component or part. Alternatively, a single integrated component or part can be divided into multiple separate components and / or parts. The use of the public designation "a" or "an" to describe a component or part does not imply the exclusion of other components or parts.

[0059] It should be understood that although terms such as “first” or “second” may be used in this disclosure to describe various elements (such as a first plate and a second plate), these elements are not defined by these terms, which are only used to distinguish one element from another.

[0060] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.

[0061] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A battery pack, characterized in that, include: A first heat exchange plate includes an integrally formed first plate body and a second plate body. The first plate body is perpendicular to the height direction of the battery pack, and the second plate body is perpendicular to the width direction of the battery pack. The first plate body includes two plate body portions located on opposite sides of the second plate body in the width direction. The battery pack includes two rows of batteries located on opposite sides of the second plate in the width direction. Each row of batteries includes a plurality of batteries arranged along the length direction of the battery pack. Each battery has an adjacent first battery side and a second battery side. The first battery side faces and is thermally coupled to the corresponding plate portion of the first plate, and the second battery side faces and is thermally coupled to the second plate.

2. The battery pack according to claim 1, characterized in that, It includes a plurality of first heat exchange plates stacked along the height direction and a plurality of battery packs corresponding to the plurality of first heat exchange plates respectively. The battery located between two adjacent first heat exchange plates also has a third battery side opposite to the side of the first battery. The third battery side is directly opposite to the first plate of another first heat exchange plate and is heat-coupled.

3. The battery pack according to claim 2, characterized in that, The second plate extends upward from the first plate along the height direction, and the battery pack is supported on the first plate.

4. The battery pack according to claim 3, characterized in that, A heat conductor is provided between the side of the third battery and the first plate of the first heat exchange plate above the battery.

5. The battery pack according to claim 3, characterized in that, It also includes a second cold plate perpendicular to the height direction, the second cold plate being located above the top battery pack, and the side of the third battery of the top battery pack opposite to the side of its first battery being directly opposite the second cold plate and heat-coupled.

6. The battery pack according to claim 2, characterized in that, The second plate extends downward from the first plate along the height direction and is located on the next layer of the first plate, which is the battery pack support between two adjacent first plates.

7. The battery pack according to claim 6, characterized in that, A heat conductor is provided between the side of the third battery and the first plate of the first heat exchange plate below the battery.

8. The battery pack according to claim 6, characterized in that, It also includes a third cold plate perpendicular to the height direction, the third cold plate being located below the bottom battery pack, and the side of the third battery of the bottom battery pack opposite to the side of its first battery being directly opposite the third cold plate and heat-coupled.

9. The battery pack according to claim 2, characterized in that, The plurality of first heat exchange plates are assembled together.

10. The battery pack according to claim 9, characterized in that, The distance between two adjacent first heat exchange plates in the height direction is D1, in mm, and the dimension of the battery located between the two first heat exchange plates in the height direction is H1, in mm, where 0.84≤H1 / D1≤0.

99.

11. The battery pack according to claim 10, characterized in that, 170mm≤H1≤200mm, and / or, 171mm≤D1≤204mm.

12. The battery pack according to claim 9, characterized in that, It also includes a fourth heat exchange plate assembled with the plurality of first heat exchange plates. The fourth heat exchange plate is located at one end of the plurality of first heat exchange plates in the height direction and is stacked with them. The fourth heat exchange plate includes two integrally formed third plate bodies and a fourth plate body. The two third plate bodies are perpendicular to the height direction and spaced apart along the height direction. The fourth plate body is located between the two third plate bodies and is perpendicular to the width direction. One of the third plate bodies of the fourth heat exchange plate is spaced apart from the first plate body of the nearest first heat exchange plate in the height direction and is in contact with the second plate body of the nearest first heat exchange plate.

13. The battery pack according to claim 2, characterized in that, The plurality of first heat exchange plates are integrally formed.

14. The battery pack according to claim 13, characterized in that, The distance between two adjacent first heat exchange plates in the height direction is D1, in mm, and the dimension of the battery located between the two first heat exchange plates in the height direction is H1, in mm, where 0.84≤H1 / D1≤0.

98.

15. The battery pack according to claim 14, characterized in that, 170mm≤H1≤200mm, and / or, 175mm≤D1≤204mm.

16. The battery pack according to claim 13, characterized in that, It also includes a fifth heat exchange plate integrally formed with the plurality of first heat exchange plates. The fifth heat exchange plate is located at one end of the plurality of first heat exchange plates in the height direction and is stacked with them. The fifth heat exchange plate is perpendicular to the height direction and is spaced apart from the first plate body of the nearest first heat exchange plate in the height direction and is in contact with the second plate body of the nearest first heat exchange plate.

17. The battery pack according to claim 1, characterized in that, The first heat exchange plate includes two first plates spaced apart in the height direction, a second plate located between the two first plates, the two first plates and the second plate being integrally formed, and the battery pack located between the two first plates.

18. An electrical appliance, characterized in that, Includes the battery pack according to any one of claims 1 to 17.

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