Thermal management components, batteries and electrical utilization devices

Abstract

An embodiment of the present application provides a thermal management element, a battery, and an electrical utilization device. The thermal management element includes a set of first heat exchange surfaces, including a plurality of first heat exchange surfaces for regulating temperature in association with a plurality of outer battery units located on one side of the thermal management element, each first heat exchange surface for regulating temperature in association with one outer battery unit, and a set of second edge heat exchange surfaces, including a plurality of second edge heat exchange surfaces for regulating temperature in association with a plurality of middle battery units located on the other side of the thermal management element, each second edge heat exchange surface for regulating temperature in association with one middle battery unit, wherein the heat exchange area of ​​each first heat exchange surface is a first heat exchange area S1 and the heat exchange area of ​​each second edge heat exchange surface is a second heat exchange area S2, and the first heat exchange area S1 is larger than the second heat exchange area S2. This application can enhance battery space adaptability.

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE Embodiments of the present application relate to the field of batteries, and more particularly to thermal management components, batteries, and electrical utilization devices. [Background technology]

[0002] Power batteries are one of the core components of electric vehicles, and their charging and discharging is based on electrochemical reactions, so the safety, performance and life of the battery are closely related to temperature. With the rapid development of electric vehicle technology, the requirements for the specific energy, charging and discharging speed and service life of power batteries tend to be higher, so battery thermal management is becoming increasingly important.

[0003] In the battery pack of an electric vehicle, a large number of battery units are arranged in a series-parallel manner to form a multi-layer array, and the temperature difference between the battery units will induce a battery state that is not consistent, which will affect the overall performance of the battery pack, so it is necessary to take a solution to reduce the maximum temperature difference between the battery units. A thermal management member may be used to cool the battery units, and the thermal management member is generally a hollow plate-like structure that contains a flowable heat exchange fluid inside, and the battery units are cooled by the heat exchange fluid. The battery units are arranged in multiple layers, and one side of each layer of the battery units is connected to one side of a liquid cooling plate to exchange heat, or a liquid cooling plate is installed on both sides of each layer of the battery units, thereby combining multiple thermal management members with multiple batteries to form a battery, which increases the overall volume. In such a case, how to improve the spatial adaptability of the battery to meet the requirements of different usage situations is a technical problem that needs to be solved urgently in battery technology. Summary of the Invention

[0004] The embodiments of the present application provide a thermal management member, a battery, an electrical utilization device, a manufacturing method and an apparatus that can improve the spatial adaptability of a battery.

[0005] According to a first aspect of the present application, there is provided a thermal management member including a set of first heat exchange surfaces and a set of second edge heat exchange surfaces, wherein the set of first heat exchange surfaces includes a plurality of first heat exchange surfaces for cooperating with a plurality of outer battery units located on one side of the thermal management member to regulate temperature, each of the first heat exchange surfaces for cooperating with one of the outer battery units to regulate temperature, and the set of second edge heat exchange surfaces includes a plurality of second edge heat exchange surfaces for cooperating with a plurality of middle battery units located on the other side of the thermal management member to regulate temperature, each of the second edge heat exchange surfaces for cooperating with one of the middle battery units to regulate temperature, wherein a heat exchange area of ​​each of the first heat exchange surfaces is a first heat exchange area S1, and a heat exchange area of ​​each of the second edge heat exchange surfaces is a second heat exchange area S2, and the first heat exchange area S1 is greater than the second heat exchange area S2.

[0006] In this embodiment, the thermal management member has two sets of heat exchange surfaces with different heat exchange areas, and can be flexibly combined with the battery units. By installing two thermal management members on both sides of one layer of middle battery units, each middle battery unit in one layer exchanges heat with the second edge heat exchange surfaces with two small heat exchange areas of the two thermal management members, while each outer battery unit in one layer of outer battery units exchanges heat with the first heat exchange surface with one large heat exchange area of ​​one thermal management member, so that the middle battery units and the outer battery units can basically achieve the same heat exchange effect. The thermal management member of this embodiment can meet the uniform heat exchange requirements of a battery with an odd number of battery units and a battery with an even number of battery units, and can more flexibly adjust the thickness of the battery, thereby enhancing the spatial adaptability of the battery and improving the flexibility of battery modularization.

[0007] In some embodiments, a first heat exchange flow path is formed within the thermal management member to provide a path for the movement of a heat exchange fluid, the thermal management member includes a first side plate and a second side plate arranged opposite each other and having a first heat exchange flow path formed therebetween, a set of first heat exchange surfaces is formed on the first side plate, the heat exchange fluid provides temperature conditioning to the outer battery unit via the first heat exchange surfaces, and a set of second edge heat exchange surfaces is formed on the second side plate, the heat exchange fluid further provides temperature conditioning to the intermediate battery unit via the second edge heat exchange surfaces.

[0008] In this embodiment, two sets of heat exchange surfaces with different heat exchange areas are formed on the first side plate and the second side plate, respectively, and a first heat exchange flow path is formed between the first side plate and the second side plate to provide a path for the heat exchange fluid to move, so that the heat exchange fluid can exchange heat with the battery unit through the first heat exchange surface and the second edge heat exchange surface, and the circulating flow of the heat exchange fluid can realize continuous temperature regulation of the battery unit.

[0009] In some embodiments, the first side plate has a first side flow passage formed with a plurality of first heat exchange surfaces at an area aligned with the plurality of outer battery units, and the second side plate has a second side flow passage formed with a plurality of second edge heat exchange surfaces at an area aligned with the plurality of middle battery units, the first side flow passage and the second side flow passage aligned with each other to form a first heat exchange flow passage.

[0010] In this embodiment, a side flow path is formed in the first side plate and the second side plate, respectively, a first heat exchange surface and a second edge heat exchange surface are formed in the side flow path, and the first side flow path and the second side flow path are combined to form a first heat exchange flow path, so that the first heat exchange surface and the second edge heat exchange surface can realize heat exchange with the heat exchange fluid in the common first heat exchange flow path, and by configuring the heat exchange areas differently, it is realized that the first heat exchange surface has a better heat exchange effect than the second edge heat exchange surface.

[0011] In some embodiments, there is one first side flow path, and one first heat exchange surface is formed at a portion aligned with one outer battery unit, the first heat exchange area S1 is the surface area of ​​the first heat exchange surface, the second side flow path includes a plurality of second side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed at a portion aligned with one intermediate battery unit in each second side partial flow path, each second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

[0012] In this embodiment, there is one first side passage, the second side passage is divided into a plurality of second side partial passages, and the second heat exchange area is the sum of the surface areas of the second edge heat exchange partial surfaces of the plurality of second side partial passages. By adjusting the surface area and quantity of the second edge heat exchange partial surfaces, it is not only possible to realize that the second heat exchange area is smaller than the first heat exchange area, but also to precisely adjust the proportional relationship between the second heat exchange area S2 and the first heat exchange area S1, and to combine according to actual requirements to properly adjust the proportionality between the second heat exchange area S2 and the first heat exchange area S1, so as to realize more accurate heat exchange control and improve the uniformity of heat exchange.

[0013] In some embodiments, the first side channel and the plurality of second side partial channels communicate with each other to form a heat exchange channel.

[0014] In this embodiment, by arranging the first side flow passage and multiple second side partial flow passages so as to be in communication with each other, the heat exchange fluid in the heat exchange flow passage can simultaneously exchange heat with the first side plate and the second side plate, simplifying the design of the heat exchange flow passage and facilitating the manufacture of the thermal management member.

[0015] In some embodiments, each first heat exchange surface has a first heat exchange width W1 and each second edge heat exchange surface has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is the width of the first heat exchange surface, the second heat exchange width W2 is the sum of the widths of the multiple second edge heat exchange portion surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.9.

[0016] In this embodiment, the proportional adjustment of the first heat exchange area S1 and the second heat exchange area S2 is realized by adjusting the ratio between the first heat exchange width W1 of the first heat exchange surface and the second heat exchange width W2 of the second edge heat exchange surface, whereby the adjustment of the second heat exchange width W2 of the second edge heat exchange surface is realized by adjusting the width and number of the second edge heat exchange partial surface. By controlling the ratio between the first heat exchange width W1 and the second heat exchange width W2, the proportional adjustment of the first heat exchange area S1 and the second heat exchange area S2 can be easily realized.

[0017] In some embodiments, the first side flow path includes a plurality of first side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a first heat exchange partial surface is formed in a portion of each first side partial flow path that is associated with one outer battery unit, each first heat exchange surface includes a plurality of first heat exchange partial surfaces, and the first heat exchange area S1 is the sum of the surface areas of the plurality of first heat exchange partial surfaces; the second side flow path includes a plurality of second side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed in a portion of each second side partial flow path that is associated with one intermediate battery unit, each second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

[0018] In this embodiment, the first side flow passage is divided into a plurality of first side partial flow passages, the first heat exchange area is the sum of the surface areas of the plurality of first heat exchange partial surfaces, the second side flow passage is divided into a plurality of second side partial flow passages, the second heat exchange area is the sum of the surface areas of the second edge heat exchange partial surfaces of the plurality of second side partial flow passages. By adjusting the surface areas and quantities of the first heat exchange partial surfaces and the second edge heat exchange partial surfaces, it is not only possible to realize that the second heat exchange area S2 is smaller than the first heat exchange area S1, but also to accurately adjust the proportional relationship between the second heat exchange area S2 and the first heat exchange area S1, and the proportionality between the second heat exchange area S2 and the first heat exchange area S1 can be adjusted according to actual requirements, so as to realize more accurate heat exchange control.

[0019] In some embodiments, the first heat exchange flow path includes a plurality of sub-flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, and each sub-flow path includes at least one first side partial flow path and at least one second side partial flow path, and the first side partial flow path and the second side partial flow path constituting one sub-flow path are in communication with each other.

[0020] In this embodiment, by arranging some of the first side partial flow paths and multiple second side partial flow paths so that they are connected to each other, the first heat exchange flow path is divided into multiple sub-flow paths, and the heat exchange fluid in each sub-flow path can simultaneously exchange heat with the first side plate and the second side plate, thereby simplifying the design of the first heat exchange flow path and facilitating the manufacture of the thermal management member.

[0021] In some embodiments, each first heat exchange surface has a first heat exchange width W1 and each second edge heat exchange surface has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is a sum of widths of the multiple first heat exchange partial surfaces, the second heat exchange width W2 is a sum of widths of the multiple second edge heat exchange partial surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.9.

[0022] In this embodiment, the first heat exchange area and the second heat exchange area are adjusted proportionally by adjusting the ratio of the first heat exchange width W1 of the first heat exchange surface and the second heat exchange width W2 of the second edge heat exchange surface, where the adjustment of the first heat exchange width W1 of the first heat exchange surface is achieved by adjusting the width and number of the first heat exchange partial surface, and the adjustment of the second heat exchange width W2 of the second edge heat exchange surface is achieved by adjusting the width and number of the second edge heat exchange partial surface. By controlling the ratio of the first heat exchange width W1 and the second heat exchange width W2, the proportional adjustment of the first heat exchange area S1 and the second heat exchange area S2 can be easily achieved.

[0023] In some embodiments, the heat exchanger further includes a first turbulence section disposed in the first side flow path and / or the second side flow path and adapted to generate turbulence in the heat exchange fluid flowing through the first side flow path and / or the second side flow path.

[0024] In this embodiment, by installing a first turbulence section in the first side flow path and / or the second side flow path, the heat exchange fluid flowing through the first side flow path and / or the second side flow path can be turbulent, making the heat exchange fluid temperature uniform and making the temperature adjustment of the battery unit more uniform.

[0025] In some embodiments, the first turbulence section is located in a portion of the first side flow path that is not aligned with the outer battery unit, and / or the first turbulence section is located in a portion of the second side flow path that is not aligned with the middle battery unit.

[0026] In this embodiment, if the first turbulence unit is installed at a location adjacent to the battery unit, the first turbulence unit may occupy the surface area of ​​the first heat exchange surface and / or the second edge heat exchange surface, which will further affect the heat exchange effect. If the first turbulence unit is installed at a location not adjacent to the battery unit, the first turbulence unit will not affect the first heat exchange area S1 and the second heat exchange area S2, and can form turbulence on the downstream first heat exchange surface and / or the second edge heat exchange surface, making the temperature distribution of the heat exchange fluid more uniform, improving the heat exchange coefficient, enhancing the heat exchange between the heat exchange fluid and the battery unit, and improving the heat exchange efficiency.

[0027] In some embodiments, the ratio of the second heat exchange area S2 to the first heat exchange area S1 is between 0.1-0.9.

[0028] In this embodiment, the ratio of the second heat exchange area S2 to the first heat exchange area S1 is between 0.1-0.9, but the change in the ratio of the second heat exchange area S2 to the first heat exchange area S1 can be adjusted according to the different heat exchange performance requirements of the battery units on both sides of the thermal management member, so as to further meet the heat exchange performance requirements of different battery units.

[0029] In some embodiments, each first heat exchange surface is disposed along the width of the thermal management member and a set of the first heat exchange surfaces are aligned along the length of the thermal management member, and each second edge heat exchange surface is disposed along the width of the thermal management member and a set of the second edge heat exchange surfaces are aligned along the length of the thermal management member.

[0030] In this embodiment, the first heat exchange surface and the second edge heat exchange surface are arranged along the width direction of the thermal management member, so that the outer battery units and the middle battery units are arranged on the first side plate and the second side plate of the thermal management member such that their length direction coincides with the width direction of the thermal management member. By arranging both a set of first heat exchange surfaces and a set of second edge heat exchange surfaces along the length direction of the thermal management member, multiple rows of the outer battery units and the middle battery units can be arranged along the length direction of the thermal management member, and heat exchange between multiple outer battery units and multiple middle battery units is realized by one thermal management member.

[0031] According to a second aspect, a battery is provided, which includes at least three layers of battery units and a temperature regulation system, wherein the at least three layers of battery units include two layers of outer battery units and at least one layer of intermediate battery units located between the two layers of outer battery units, each layer of the outer battery units and each layer of the intermediate battery units each include a plurality of battery units, the temperature regulation system is used for heat exchange with the outer battery units and the intermediate battery units, and includes two sets of first heat exchange surfaces and a plurality of sets of second heat exchange surfaces, each set of the first heat exchange surfaces includes a plurality of first heat exchange surfaces, each set of the second heat exchange surfaces includes a plurality of second heat exchange surfaces, the first heat exchange surfaces and the second heat exchange surfaces can exchange heat with a heat exchange fluid inside the temperature regulation system, wherein the temperature regulation system the system is arranged such that one set of side surfaces of the outer battery units in each layer cooperates with a set of first heat exchange surfaces to regulate temperature, one side surface of each outer battery unit cooperates with one first heat exchange surface to regulate temperature, each first heat exchange surface has a first heat exchange area S1, the intermediate battery units in each layer are disposed between two sets of second heat exchange surfaces, two sets of side surfaces on opposite sides of the intermediate battery units in each layer cooperate with an adjacent set of second heat exchange surfaces to regulate temperature, each two opposite sides of each intermediate battery unit cooperate with an adjacent second heat exchange surface to regulate temperature, and the first heat exchange area S1 is larger than the heat exchange area of ​​the second heat exchange surfaces.

[0032] In this embodiment, the temperature regulation system includes two sets of first heat exchange surfaces and multiple sets of second heat exchange surfaces, and exchanges heat with two layers of outer battery units and at least one layer of intermediate battery units, where one side of each layer of outer battery units exchanges heat with one set of first heat exchange surfaces, i.e., each outer battery unit exchanges heat with the temperature regulation system through the first heat exchange area S1, and the two opposite sides of each layer of intermediate battery units exchange heat with the adjacent set of second heat exchange surfaces, i.e., each intermediate battery unit exchanges heat with the temperature regulation system through the heat exchange areas of the two second heat exchange surfaces. In addition, it is possible to construct a battery with an odd number of battery units and a battery with an even number of battery units, and the number and thickness of the battery layers can be designed more freely, resulting in more desirable spatial adaptability. In addition, since the first heat exchange area is larger than the heat exchange area of ​​the second heat exchange surface, it is possible to freely adjust the cooling effect of the intermediate battery units and the outer battery units. By varying the ratio of the heat exchange area of ​​the first heat exchange surface to the heat exchange area of ​​the second heat exchange surface, the outer battery unit and the middle battery unit can have a close cooling effect, reducing the temperature difference between the battery units, matching the battery conditions, and improving the overall performance of the battery.

[0033] In some embodiments, the ratio of the heat exchange area of ​​the second heat exchange surface to the first heat exchange area S1 is between 0.1-0.9, and in some embodiments, the ratio of the heat exchange area of ​​the two second heat exchange surfaces to the one first heat exchange area is between 0.2-1.8, so that the cooling areas of the middle battery unit and the outer battery unit can be freely adjusted between 0.2-1.8.

[0034] In some embodiments, the battery unit is three-layered, including two layers of outer battery units and one layer of middle battery units, and the temperature adjustment system includes two edge thermal management members each having a first heat exchange flow path formed therein for providing a path for the movement of a heat exchange fluid, the two edge thermal management members including a first side plate and a second side plate disposed opposite each other, the first side plate having a set of first heat exchange surfaces formed thereon, the multiple sets of second heat exchange surfaces including two sets of second edge heat exchange surfaces, each set of second edge heat exchange surfaces including a plurality of second edge heat exchange surfaces, and the second side plates of the two edge thermal management members A pair of second edge heat exchange surfaces is formed, each having a second heat exchange area S2, the two second side plates of the two edge thermal management members are adjacent and the two first side plates are opposite each other, a layer of outer battery units is provided on each of the first side plates of the two edge thermal management members, one side of each outer battery unit is aligned with a corresponding one of the first heat exchange surfaces, and a layer of intermediate battery units is provided between the two edge thermal management members, two opposite sides of each intermediate battery unit are aligned with one of the second edge heat exchange surfaces of the two edge thermal management members.

[0035] In this embodiment, the temperature adjustment system includes two edge thermal management elements, a set of first heat exchange surfaces is formed on the first side plate of each edge thermal management element, the sets of second heat exchange surfaces include two sets of second edge heat exchange surfaces, and a set of second edge heat exchange surfaces is formed on the second side plates of the two edge thermal management elements respectively. Two layers of outer battery units are respectively associated with a set of first heat exchange surfaces of the two edge thermal management elements, one layer of middle battery units is disposed between the two edge thermal management elements, and two opposite sides of each middle battery unit are respectively associated with one of the second edge heat exchange surfaces of the two edge thermal management elements. The two edge thermal management elements realize the heat exchange of three layers of battery units, realize the arrangement of an odd number of layers of battery units, and reduce the number of thermal management elements, resulting in a more compact structure, a smaller overall thickness, and more desirable space adaptability.

[0036] In some embodiments, the ratio of the second heat exchange area S2 to the first heat exchange area S1 is between 0.1-0.9. In some embodiments, the ratio of the two second heat exchange areas 2S2 to the one first heat exchange area S1 is between 0.2-1.8, so that the cooling areas of the middle battery unit and the outer battery unit can be freely adjusted between 0.2-1.8.

[0037] In some embodiments, the battery unit has four or more layers, including two layers of outer battery units and at least two layers of middle battery units, and the temperature adjustment system includes two edge thermal management members each including an edge thermal management member, a first heat exchange flow path is formed within the edge thermal management member to provide a path for a heat exchange fluid to move, the edge thermal management member includes a first side plate and a second side plate arranged oppositely, a set of first heat exchange surfaces is formed on the first side plate, the multiple sets of second heat exchange surfaces include two sets of second edge heat exchange surfaces, and each set of second edge heat exchange surfaces includes a plurality of second edge heat exchange surfaces. a second side plate of each of the two edge heat management members is formed with a set of second edge heat exchange surfaces, each of the second edge heat exchange surfaces has a second heat exchange area S2; the temperature adjustment system further includes at least one intermediate heat management member, each of the intermediate heat management members includes an intermediate heat management member, and a second heat exchange flow path is formed within the intermediate heat management member, the second heat exchange flow path also serving to provide a path for the movement of the heat exchange fluid; each intermediate heat management member includes two third side plates located on the opposite sides; and the sets of second heat exchange surfaces further include a set of second intermediate heat exchange surfaces, wherein each of the third side plates has a set of second intermediate heat exchange surfaces. and each set of second intermediate heat exchange surfaces includes a plurality of second intermediate heat exchange surfaces, each second intermediate heat exchange surface has a third heat exchange area S3, the first heat exchange area S1 is greater than the third heat exchange area S3, and the number of intermediate heat management members is the number of layers of the battery unit minus 3, wherein at least one intermediate heat management member is disposed between two edge heat management members, two second side plates of the two edge heat management members are adjacent to one third side plate of one intermediate heat management member respectively, and two first side plates of the two edge heat management members are opposite to each other, and the two edge heat management members are disposed between the two edge heat management members. A layer of outer battery units is provided on each first side plate of the edge thermal management member, and each outer battery unit is aligned with a first heat exchange surface of a corresponding first side plate; wherein a layer of middle battery units is provided between each edge thermal management member and an adjacent middle thermal management member, and in each layer of middle battery units aligned with an edge thermal management member, one side of each middle battery unit is aligned with a second edge heat exchange surface of a second side of the edge thermal management member, and another side of each middle battery unit is aligned with a second middle heat exchange surface of a third side plate of the middle thermal management member;and / or a layer of intermediate battery units is further provided between every two adjacent intermediate thermal management members, and in each layer of intermediate battery units, both sides of which are aligned with the intermediate thermal management members, two side surfaces of each intermediate battery unit are aligned with one second intermediate heat exchange surface of the opposing third side plates of the two intermediate thermal management members, respectively;

[0038] In this embodiment, the battery unit has four or more layers, including two layers of outer battery units and at least two layers of middle battery units. The temperature adjustment system includes two first thermal management members and at least one second thermal management member, and a set of second middle heat exchange surfaces is formed on the two third side plates of the second thermal management members, and the second middle heat exchange surface also belongs to the second heat exchange surface, and the second middle heat exchange surface has a third heat exchange area S3, and the third heat exchange area S3 is also smaller than the first heat exchange area S1. In this way, the first heat exchange surface of the first thermal management member is used to perform one-sided cooling for the outer battery units, and one middle battery unit adjacent to the first thermal management member exchanges heat with the second edge heat exchange surface of the second side of the edge thermal management member and the second middle heat exchange surface of the third side plate of one middle thermal management member. The two sides of the middle battery units of the remaining layers exchange heat with the second middle heat exchange surface of the third side plate opposite to the two middle thermal management members on both sides. In this way, a battery arrangement structure such as any number of layers of middle battery units + two layers of outer battery units can be realized, and the number of thermal management components is one less than the number of battery unit layers, reducing the number of thermal management components, making the structure more compact, reducing the overall thickness, and providing more desirable spatial adaptability.

[0039] In some embodiments, the ratio of the third heat exchange area S3 to the first heat exchange area S1 is between 0.1-0.9, and / or the ratio of the sum of the second heat exchange area S2 and the third heat exchange area S3 to the first heat exchange area S1 is between 0.2-1.8.

[0040] In this embodiment, the ratio 2S2 / S1 between the two second heat exchange areas S2 and the first heat exchange area S1 is between 0.2-1.8, and / or the ratio between the sum of the second heat exchange area S2 and the third heat exchange area S3 and the first heat exchange area S1 is between 0.2-1.8, so that the ratio of the total heat exchange area between the temperature regulating system and one intermediate battery unit and the heat exchange area between the temperature regulating system and one outer battery unit can be changed between 0.2-1.8. By adjusting the proportional change, the outer battery units and the intermediate battery units can have a close cooling effect, so as to reduce the temperature difference between the battery units, match the battery states, and improve the overall performance of the battery.

[0041] In some embodiments, a first side plate of the edge thermal management member defines a first side flow passage having a plurality of first heat exchange surfaces at a location aligned with one of the outer battery units, and a second side plate of the edge thermal management member defines a second side flow passage having a plurality of second edge heat exchange surfaces at a location aligned with one of the intermediate battery units, the first side flow passage and the second side flow passage combining to define a first heat exchange flow passage.

[0042] In this embodiment, a side flow passage is formed on the first side plate and the second side plate of the edge heat management member, a first heat exchange surface and a second edge heat exchange surface are formed in the side flow passage, and the first side flow passage and the second side flow passage are combined to form a first heat exchange flow passage, so that the first heat exchange surface and the second edge heat exchange surface can realize heat exchange with the heat exchange fluid in the common first heat exchange flow passage, and by setting the heat exchange areas differently, it is realized that the first heat exchange surface has a better heat exchange effect than the second edge heat exchange surface.

[0043] In some embodiments, there is one first side flow path, and one first heat exchange surface is formed at a portion associated with one outer battery unit, the first heat exchange area S1 is the surface area of ​​the first heat exchange surface, the second side flow path includes a plurality of second side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed at a portion associated with one intermediate battery unit in each second side partial flow path, the one second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces associated with one intermediate battery unit, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

[0044] In this embodiment, there is one first side flow passage, the second side flow passage is divided into multiple second side partial flow passages, and the second heat exchange area is the sum of the surface areas of the second edge heat exchange partial surfaces of the multiple second side partial flow passages. By adjusting the surface area and quantity of the second edge heat exchange partial surfaces, it is not only possible to realize that the second heat exchange area is smaller than the first heat exchange area, but also to accurately adjust the proportional relationship between the second heat exchange area and the first heat exchange area, and by combining according to actual requirements, the proportionality between the second heat exchange area and the first heat exchange area can be optimized, thereby realizing more accurate heat exchange control.

[0045] In some embodiments, the first side flow passage and the plurality of second side partial flow passages communicate with each other to form a first heat exchange flow passage.

[0046] In this embodiment, by arranging the first side flow passage and multiple second side partial flow passages so as to be in communication with each other, the heat exchange fluid in the first heat exchange flow passage can simultaneously exchange heat with the first side plate and the second side plate, simplifying the design of the first heat exchange flow passage and facilitating the manufacture of the edge thermal management member.

[0047] In some embodiments, the first side flow passage includes a plurality of first side partial flow passages, each having a first heat exchange partial surface formed in a portion associated with one of the outer battery units, each of the first heat exchange surface includes a plurality of first heat exchange partial surfaces associated with one of the outer battery units, the first heat exchange area S1 is the sum of the surface areas of the plurality of first heat exchange partial surfaces, the second side flow passage includes a plurality of second side partial flow passages arranged at intervals, each of the second side partial flow passages has a second edge heat exchange partial surface formed in a portion associated with one of the intermediate battery units, each of the second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces associated with one of the intermediate battery units, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

[0048] In some embodiments, each first heat exchange surface has a first heat exchange width W1, each second edge heat exchange surface has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is the width of a portion of the first side flow path associated with one outer battery unit, the second heat exchange width W2 is the sum of the widths of the multiple second edge heat exchange partial surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.9.

[0049] In this embodiment, the proportionality of the first heat exchange area and the second heat exchange area is realized by adjusting the ratio between the first heat exchange width W1 of the first heat exchange surface and the second heat exchange width W2 of the second edge heat exchange surface, whereby the adjustment of the second heat exchange width W2 is realized by adjusting the width and number of the second edge heat exchange partial surface. By controlling the ratio between the first heat exchange width W1 and the second heat exchange width W2, the proportional adjustment of the first heat exchange area S1 and the second heat exchange area S2 can be easily realized.

[0050] In some embodiments, the first side flow path includes a plurality of first side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a first heat exchange partial surface is formed in a portion of each first side partial flow path that faces one outer battery unit, each first heat exchange surface includes a plurality of first heat exchange partial surfaces that face one outer battery unit, and the first heat exchange area S1 is the sum of the surface areas of the plurality of first heat exchange partial surfaces; the second side flow path includes a plurality of second side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed in a portion of each second side partial flow path that faces one intermediate battery unit, each second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces that face one intermediate battery unit, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

[0051] In this embodiment, the first side passage is divided into a plurality of first side partial passages, the first heat exchange area S1 is the sum of the surface areas of the plurality of first heat exchange partial surfaces, the second side passage is divided into a plurality of second side partial passages, the second heat exchange area S2 is the sum of the surface areas of the second edge heat exchange partial surfaces of the plurality of second side partial passages. By adjusting the surface areas and quantities of the first heat exchange partial surfaces and the second edge heat exchange partial surfaces, it is not only possible to realize that the second heat exchange area S2 is smaller than the first heat exchange area S1, but also to accurately adjust the proportional relationship between the second heat exchange area S2 and the first heat exchange area S1, and the proportionality between the second heat exchange area S2 and the first heat exchange area S1 can be adjusted appropriately according to actual requirements, thereby realizing more accurate heat exchange control.

[0052] In some embodiments, each first heat exchange surface has a first heat exchange width W1 and each second edge heat exchange surface has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is a sum of widths of the multiple first heat exchange partial surfaces, the second heat exchange width W2 is a sum of widths of the multiple second edge heat exchange partial surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.9.

[0053] In this embodiment, the proportion of the first heat exchange area S1 to the second heat exchange area S2 is realized by adjusting the ratio of the first heat exchange width W1 of the first heat exchange surface to the second heat exchange width W2 of the second edge heat exchange surface. Wherein, the adjustment of the first heat exchange width W1 of the first heat exchange surface is realized by adjusting the width and number of the first heat exchange partial surface, and the adjustment of the second heat exchange width W2 of the second edge heat exchange surface is realized by adjusting the width and number of the second edge heat exchange partial surface. By controlling the ratio of the first heat exchange width W1 to the second heat exchange width W2, the proportional adjustment of the first heat exchange area S1 to the second heat exchange area S2 can be easily realized.

[0054] In some embodiments, the first heat exchange flow path includes a plurality of first sub-flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, and each of the first sub-flow paths includes at least one first side partial flow path and at least one second side partial flow path, and the first side partial flow path and the second side partial flow path constituting one first sub-flow path are in communication with each other.

[0055] In this embodiment, by arranging the first side partial flow passage and multiple second side partial flow passages so that they are connected to each other, the first heat exchange flow passage is divided into multiple sub-flow passages in which the heat exchange fluid inside each of the sub-flow passages can simultaneously exchange heat with the first side plate and the second side plate, thereby simplifying the design of the first heat exchange flow passage and facilitating the manufacture of the thermal management member.

[0056] In some embodiments, the edge thermal management member further includes a first turbulence portion disposed in the first side flow passage and / or the second side flow passage and adapted to generate turbulence in the heat exchange fluid flowing through the first side flow passage and / or the second side flow passage.

[0057] In this embodiment, by installing a first turbulence section in the first side flow path and / or the second side flow path, the heat exchange fluid flowing through the first side flow path and / or the second side flow path can be turbulent, thereby improving the heat exchange effect of the heat exchange fluid.

[0058] In some embodiments, the first turbulence section is located in a portion of the first side flow path that is not aligned with the outer battery unit, and / or the first turbulence section is located in a portion of the second side flow path that is not aligned with the middle battery unit.

[0059] In this embodiment, if the first turbulence unit is installed at a location adjacent to the battery unit, the first turbulence unit may occupy the surface area of ​​the first heat exchange surface and / or the second edge heat exchange surface, which will further affect the heat exchange effect. If the first turbulence unit is installed at a location not adjacent to the battery unit, the first turbulence unit will not affect the first heat exchange area S1 and the second heat exchange area S2, and can form turbulence on the downstream first heat exchange surface and / or the second edge heat exchange surface, making the temperature distribution of the heat exchange fluid more uniform, improving the heat exchange coefficient, enhancing the heat exchange between the heat exchange fluid and the battery unit, and improving the heat exchange efficiency.

[0060] In some embodiments, the first heat exchange surfaces are distributed along the width of the edge thermal management member and each set of first heat exchange surfaces is aligned along the length of the edge thermal management member, and the second edge heat exchange surfaces are distributed along the width of the edge thermal management member and a set of second edge heat exchange surfaces is aligned along the length of the first thermal management member.

[0061] In this embodiment, the first heat exchange surface and the second edge heat exchange surface are distributed along the width direction of the edge thermal management member, so that the outer battery units and the middle battery units are arranged on the first side plate and the second side plate of the edge thermal management member with their length direction coinciding with the width direction of the edge thermal management member. By arranging both a set of first heat exchange surfaces and a set of second edge heat exchange surfaces along the length direction of the edge thermal management member, multiple rows of the outer battery units and the middle battery units can be arranged along the length direction of the edge thermal management member, and heat exchange between multiple outer battery units and multiple middle battery units is realized by one edge thermal management member.

[0062] In some embodiments, each third side plate of the intermediate thermal management member is formed with a third side flow passage having a pair of second intermediate heat exchange surfaces at a location aligned with a respective one of the intermediate cell units, and the third side flow passages of two opposing third side plates are combined to form a second heat exchange flow passage.

[0063] In this embodiment, a third side flow passage is formed in each of the two third side plates of the intermediate heat management member, and the third side flow passages on both sides are combined to form a second heat exchange flow passage, so that the two second intermediate heat exchange surfaces can realize heat exchange with the heat exchange fluid in the common second heat exchange flow passage.

[0064] In some embodiments, the third side flow path includes a plurality of third side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, one second intermediate heat exchange partial surface is formed in a portion of each third side partial flow path associated with one intermediate battery unit, each second intermediate heat exchange surface includes a plurality of second intermediate heat exchange partial surfaces associated with one intermediate battery unit, and the third heat exchange area S3 is the sum of the surface areas of the plurality of second intermediate heat exchange partial surfaces.

[0065] In this embodiment, the third side flow passage is divided into a plurality of third side partial flow passages, and the third heat exchange area S3 is the sum of the surface areas of the second intermediate heat exchange partial surfaces of the plurality of third side partial flow passages. By adjusting the surface area and quantity of the second intermediate heat exchange partial surfaces, it is not only possible to realize that the third heat exchange area S3 is smaller than the first heat exchange area S1, but also to accurately adjust the proportional relationship between the third heat exchange area S3 and the first heat exchange area S1 and between the third heat exchange area S3 and the second heat exchange area S2, and to appropriately adjust the proportionality between the sum of the second heat exchange area S2 and the third heat exchange area S3 and the first heat exchange area S1, and the proportionality between the two third heat exchange areas S3 and the first heat exchange area S1 according to actual requirements, thereby realizing more accurate heat exchange control.

[0066] In some embodiments, the third thermal management member further includes a second turbulence portion disposed in the third side passage and adapted to generate turbulence in the heat exchange fluid flowing through the third side passage.

[0067] In this embodiment, the second turbulent section is provided in the third side passage, so that the heat exchange fluid flowing through the third side passage can be turbulent, thereby improving the heat exchange effect of the heat exchange fluid.

[0068] In some embodiments, the second turbulence section is disposed in the third flow path at a portion not aligned with the middle battery unit.

[0069] In this embodiment, if the second turbulence part is installed at a position adjacent to the intermediate battery unit, the second turbulence part may occupy the surface area of ​​the second intermediate heat exchange surface, which may further affect the heat exchange effect. If the second turbulence part is installed at a position not adjacent to the intermediate battery unit, the second turbulence part will not affect the third heat exchange area S3, and can form turbulence on the downstream second intermediate heat exchange surface, which improves the heat exchange effect.

[0070] In some embodiments, each second intermediate heat exchanging surface is disposed along the width of the intermediate heat management member, and a pair of the second intermediate heat exchanging surfaces are aligned along the length of the intermediate heat management member.

[0071] In this embodiment, by arranging the second intermediate heat exchange surfaces along the width direction of the intermediate heat management member, the intermediate battery units are arranged on the third side plate of the intermediate heat management member so that their length direction coincides with the width direction of the intermediate heat management member. By arranging a set of second intermediate heat exchange surfaces along the length direction of the intermediate heat management member, multiple rows of intermediate battery units can be arranged in the length direction of the intermediate heat management member, and one intermediate heat management member can exchange heat with two layers of intermediate battery units on both sides.

[0072] According to a third aspect, there is provided an electrical utilization device including a battery according to the second aspect.

[0073] The thermal management member, battery and associated electrical utilization device provided by the present application can meet the uniform heat exchange requirements of a battery having an odd number of battery units and a battery having an even number of battery units, can more flexibly adjust the thickness of the battery, and can enhance the spatial adaptability of the battery.

[0074] The accompanying drawings described herein are intended to provide further understanding of the present application and constitute a part of the present application, and the schematic embodiments and the description thereof are intended to interpret the present application and are not intended to unduly limit the present application. The accompanying drawings are as follows: [Brief description of the drawings]

[0075] [Figure 1] FIG. 1 is a schematic diagram of a single battery structure according to the prior art. [Diagram 2] FIG. 2 is a structural schematic diagram of a cross section taken along line AA of a conventional heat management member. [Diagram 3] FIG. 2 is a top view of a heat exchange portion where a battery unit and a thermal management member contact each other in the prior art. [Figure 4] FIG. 2 is a schematic diagram of a cross section taken along line AA of a heat exchange portion where a battery unit and a thermal management member contact each other according to the prior art. [Diagram 5] FIG. 1 is a schematic diagram showing two conventional thermal management members jointly exchanging heat with one layer of battery units in between. [Figure 6] 6 is a schematic diagram of a cross section taken along the line BB of a heat exchange portion where a cell unit in an intermediate layer and a thermal management member are in contact with each other in FIG. 5. FIG. [Figure 7] 2 is a structural schematic diagram of an edge thermal management member according to some embodiments of the present application. FIG. [Figure 8] FIG. 2 is a side view of an edge thermal management member according to some embodiments of the present application with battery units disposed on either side. [Figure 9] 9 is a partially enlarged schematic diagram of a portion K of the heat exchange surface where heat is exchanged between the edge heat management member and the battery unit in FIG. 8. FIG. [Figure 10] 2 is a partial enlarged view of a first side plate of an edge thermal management member according to some embodiments of the present application. [Figure 11] FIG. 2 is a partial top view of a first side plate of an edge thermal management member according to some embodiments of the present application. [Figure 12] 12 is a partially enlarged schematic diagram of a first heat exchange surface 1 portion of one of the first side plates of the edge thermal management member in FIG. 11. FIG. [Figure 13]FIG. 2 is a partial enlarged view of a second side plate of an edge thermal management member according to one embodiment of the present application. [Figure 14] FIG. 2 is a partial top view of a second side plate of an edge thermal management member according to some embodiments of the present application. [Figure 15] 15 is a partially enlarged schematic diagram of a portion of a second edge heat exchange surface 1 of one of the second side plates of the edge thermal management member in FIG. 14. FIG. [Figure 16] 12 is a cross-sectional schematic view taken along CC of the edge thermal management member shown in FIG. 11. FIG. [Figure 17] FIG. 12 is a cross-sectional schematic view taken along the line DD of the edge thermal management member shown in FIG. [Figure 18] 12 is a CC cross-sectional view of a portion where heat is exchanged between the battery unit shown in FIG. 11 and a partial section 1 of the second edge heat exchange surface of the edge heat management member. [Figure 19] 12 is a DD cross-sectional view of a portion where heat is exchanged between the battery unit shown in FIG. 11 and a first heat exchange surface 1 partial section of the edge heat management member. FIG. [Figure 20] FIG. 1 is a schematic diagram of a battery having a three-layer battery unit structure according to one embodiment of the present application. [Figure 21] 21 is a schematic cross-sectional view of a portion in FIG. 20 where heat is exchanged between a battery unit in an EE portion and a heat exchange surface partial section of a thermal management member. [Figure 22] 21 is a schematic cross-sectional view of a portion in FIG. 20 where heat is exchanged between a battery unit in the FF portion and a heat exchange surface partial section of a thermal management member. [Figure 23] FIG. 2 is a perspective schematic diagram of an assembled structure of a thermal management member of a battery according to an embodiment of the present application. [Figure 24] FIG. 24 is a schematic diagram of the battery in FIG. 23 in the Y direction. [Diagram 25] FIG. 1 is a schematic diagram of a battery having a four-layer battery unit structure according to one embodiment of the present application. [Figure 26] 26 is a schematic cross-sectional view of a region in FIG. 25 where heat is exchanged between the battery unit and the heat exchange surface partial section of the thermal management member at region GG. FIG. [Figure 27] FIG. 2 is a structural schematic diagram of an intermediate heat management member according to an embodiment of the present application. [Figure 28]28 is a cross-sectional schematic view taken along the line LL of the intermediate heat management member shown in FIG. 27. FIG. [Figure 29] FIG. 28 is a schematic diagram of one second intermediate heat exchange surface 1 subsection of the intermediate heat management member shown in FIG. 27. [Diagram 30] FIG. 1 is a schematic diagram of a battery having a five-layer battery unit structure according to one embodiment of the present application. [Diagram 31] 31 is a schematic cross-sectional view of a portion in FIG. 30 where heat is exchanged between the battery unit at the HH portion and a heat exchange surface partial section of the thermal management member. [Diagram 32] 1 is a schematic diagram of a battery employing a columnar battery unit having a quadrilateral cross section according to an embodiment of the present application. [Diagram 33] 1 is a schematic diagram of a battery employing a columnar battery unit having a hexagonal cross section according to an embodiment of the present application. [Diagram 34] FIG. 2 is a structural schematic diagram of an electricity utilization device according to another embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0076] In order to make the purpose, technical means and advantages of the embodiments of the present application clearer, the technical means of the embodiments of the present application will be described in detail below based on the accompanying drawings in the embodiments of the present application, but of course, the described embodiments are only some of the embodiments of the present application, not all of the embodiments of the present application. All other embodiments obtained by those skilled in the art without creative work based on the embodiments of the present application are all within the scope of protection of the present application.

[0077] All technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the art unless otherwise defined, and the terms used in the specification of the application in this application are intended to describe specific embodiments only, without limiting the present application, and the terms "comprise" and "have" and any variations thereof described in the specification, claims and the above attached drawings of this application are intended to include non-exclusive inclusions. The terms "first" and "second" in the specification, claims and the above attached drawings of this application are intended to distinguish different objects only, and are not intended to describe a specific order or primary relationship.

[0078] When the present application refers to an "embodiment," it means that a particular feature, configuration, or characteristic described based on the embodiment may be included in at least one embodiment of the present application. When the term appears in various places in the specification, it does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is clearly or implicitly understood by those skilled in the art that the embodiment described herein may be combined with other embodiments.

[0079] In the description of this application, the terms "attached," "connected," "connected," "fixed," etc., unless otherwise clearly defined or limited, should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrated, and may also be directly connected, connected via an intermediate, or communicated internally between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application based on the specific circumstances.

[0080] In this application, the term "and / or" is used only to describe the relationship between related objects and indicates that three relationships may exist, for example, A and / or B indicates that A may exist alone, A and B may exist simultaneously, or B may exist alone. In addition, the symbol " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0081] The term "plurality" as used herein means two or more (including two), and for the same reason, "sets" means sets or more (including two), and "plurality" means two or more (including two).

[0082] In the present application, the battery unit may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, or a magnesium ion battery, etc., but is not limited to the embodiments of the present application. The battery unit may be a cylinder, a flat body, a rectangular parallelepiped, or other shape, etc., but is not limited to the embodiments of the present application. Battery units are generally divided into three types, such as a columnar battery unit, a rectangular parallelepiped battery unit, and a pouch-type battery unit, depending on the packaging method, but is not limited to the embodiments of the present application.

[0083] The battery described in the embodiments of the present application represents a single physical module that includes one or more battery units to provide higher voltage and capacity. For example, the battery described in the present application may include a battery module, a battery pack, etc. The battery generally includes a housing for packaging one or more battery units. The housing can prevent liquids or other foreign objects from affecting the charging or discharging of the battery units.

[0084] In the development of battery technology, in addition to improving battery performance, issues of service life and safety are also important issues. If the service life of a battery does not reach the expected deadline, the maintenance and use costs of the battery will be very high. If the safety of the battery is not ensured, the battery will become unusable. One of the disadvantages of batteries is that their performance is greatly affected by temperature, and they must operate within a certain temperature range. If the temperature is too low or too high, it will cause irreparable damage to the battery, weakening the battery performance, and in the worst case, it will cause an internal short circuit in the battery and even thermal runaway, leading to a serious accident. Therefore, maintaining the battery within an appropriate temperature range is a necessary condition for ensuring the service life of the battery.

[0085] Compared with air cooling, batteries using liquid cooling in the prior art have a more compact structure and a better cooling effect. As shown in Figures 1 to 4, taking a battery unit composed of a cylindrical battery unit as an example, the battery unit 10 is usually cooled using a serpentine flat tube cooling plate 20 in which upper and lower plates are completely separated from each other and large flow passages are formed to effectively cool the battery 10.

[0086] FIG. 2 shows a schematic diagram of the AA cross section of a cooling plate 20 of the prior art, in which a plurality of flow paths 201 are formed inside the cooling plate 20, and a heat exchange surface 200 for heat exchange with the battery units is formed on the upper and lower surfaces 202. One side of each layer of the battery units 20 contacts one side surface of one cooling plate to exchange heat. FIGS. 3 and 4 show schematic diagrams of the portion where the heat exchange surface 200 of the cooling plate 20 of the prior art contacts the battery unit 20 in the battery unit 20. In the battery of FIGS. 1 to 4, the inventors of the present application discovered that if two layers of battery units are combined with one cooling plate, the number of layers of the battery units in the battery can only be an even number, which greatly limits the thickness design of the battery and makes it poor in spatial adaptability. When it is desired to realize an odd number of battery units, one side of one cooling plate will not be equipped with battery units, which causes a waste problem. Or, in the battery structure of three layers of battery units as shown in Fig. 5, the battery units located at the upper and lower layers have only one side exchanging heat with the liquid cooling plate, while the battery unit located at the middle layer has both upper and lower sides exchanging heat with the liquid cooling plate, so the cooling effect of the middle layer battery unit is far greater than that of the upper and lower battery units (see Fig. 4), as shown in Fig. BB of Fig. 6 (the heat exchange area between the middle layer battery unit and the liquid cooling plate is twice that of the upper and lower battery units), so there is a very large temperature difference between the battery units in different layers, which leads to inconsistent battery conditions and further affects the overall performance of the battery. Therefore, the cooling plate 20 of the prior art is not applied to realize the cooling of the battery units of an odd number of layers.

[0087] In the prior art, there is also another battery structure (not shown) in which a liquid cooling plate using a serpentine flattened tube is installed on both sides of each layer of battery unit, and a structure with any number of layers of battery units can be realized. However, the inventors of the present application discovered that in this method, battery units are not mounted on both sides of the two liquid cooling plates at the outermost edges, which creates a waste problem, and the number of liquid cooling plates is greater than the number of layers of battery units, which increases the overall thickness of the battery.

[0088] In order to solve or at least partially solve the above problems and other potential problems existing in batteries in the prior art, the inventors of the present application have proposed a thermal management member and battery that can realize the combination of any number of layers of battery units, allows the battery units in each layer to be uniformly cooled, and also saves space, reduces thickness, and improves the spatial adaptability of the battery.

[0089] Any of the technical means described in the embodiments of the present application can be applied to various devices that use batteries, such as mobile phones, mobile devices, laptops, electric bikes, electric toys, power tools, electric vehicles, ships, and spacecraft, including, for example, airplanes, rockets, space shuttles, and spaceships.

[0090] 7 to 17 show the structures of thermal management members according to some embodiments of the present application.

[0091] As shown in FIG. 1, the thermal management member described in the embodiment of the present application is for accommodating a heat exchange fluid to adjust the temperature of a plurality of battery units. The heat exchange fluid here may be liquid or gas, and the temperature adjustment is to heat or cool the plurality of battery units. When cooling or lowering the temperature of the battery units, the thermal management member is for accommodating a cooling heat exchange fluid to lower the temperature of the plurality of battery units, and at this time, the thermal management member may be called a cooling member, a cooling system, a cooling plate, etc., and the accommodated heat exchange fluid may be called a cooling medium or a cooling heat exchange fluid, more specifically, may be called a heat exchange fluid or a cooling gas. Note that the thermal management member may be for heating the plurality of battery units to increase their temperature, and the embodiment of the present application is not limited thereto. Optionally, the heat exchange fluid may be circulated to achieve a more desirable temperature adjustment effect. Optionally, the heat exchange fluid may be water, a mixture of water and glycol, air, a refrigerant, etc.

[0092] The corrugation of the thermal management member described in the embodiments of the present application is a surface shape for accommodating the battery unit, which is formed by connecting concave and convex surfaces, and is aligned with the surface of the battery unit. As is necessary to explain here, the battery unit may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc., so for battery units of other shapes, the corrugation of the thermal management member may be adaptively changed to accommodate the surface of the battery unit. In this regard, the cross-sectional shape of the heat exchange fluid passage in the thermal management member may also be adaptively changed.

[0093] The thermal management unit of the embodiment of the present application may be in direct contact with the surface of the battery unit to adjust the temperature. A thermally conductive layer may be disposed between the thermal management unit and the surface of the battery unit so that the thermal management unit is in indirect contact with the surface of the battery unit via the thermally conductive layer to adjust the temperature. The thermally conductive layer has excellent thermal conductivity and insulation properties, contributes to heat transfer and insulation, and realizes more desirable heat exchange while ensuring the performance of the battery unit. Secondly, the thermally conductive layer generally has a certain flexibility, so that it can reduce collisions between the battery unit and the thermal management unit. Materials such as elastic rubber, thermally conductive grease, and thermally conductive silica gel may be adopted as the thermally conductive layer.

[0094] The battery cells described in the embodiments of the present application may include lithium ion secondary batteries, lithium ion primary batteries, lithium sulfur batteries, sodium lithium ion batteries, sodium ion batteries, magnesium ion batteries, etc., but are not limited by the embodiments of the present application. The battery cells may be cylindrical, flat, rectangular, or other shapes, but are not limited by the embodiments of the present application. Battery cells are generally divided into three types, such as columnar battery units, rectangular parallelepiped battery units, and pouch-type battery units, according to the packaging method, and are not limited by the embodiments of the present application. The battery cell includes an electrode element composed of a positive electrode sheet, a negative electrode sheet, and a separator, and an electrolyte. The battery cell mainly works by metal ions moving between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer, and the positive electrode active material layer is applied to the surface of the positive electrode collector, and the collector not coated with the positive electrode active material layer protrudes from the collector coated with the positive electrode active material layer and functions as a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer, and the negative electrode active material layer is applied to the surface of the negative electrode collector, and the collector on which the negative electrode active material layer is not applied protrudes from the collector on which the negative electrode active material layer is applied and functions as a negative electrode tab. The material of the negative electrode collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to pass a large current without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together. The material of the separator may be PP or PE, etc. The electrode element may have a wound structure or a stacked structure, and the embodiment of the present application is not limited thereto.

[0095] The battery units described in the embodiments of the present application are a plurality of battery units arranged in the same vertical layer when the battery is normally used. Specifically, a plurality of battery units 11 in the same layer may be arranged in parallel along the length direction Y of the thermal management member, or one battery unit may be arranged in the width direction X of the thermal management member. Each battery unit may include one battery cell, or may include a plurality of battery cells arranged coaxially. The battery cells belonging to one battery unit may be electrically connected to each other, for example, in series or parallel, or may not be electrically connected. The battery cells arranged coaxially are arranged in a row, and the axial direction is parallel to the width direction X of the thermal management member. The battery units in adjacent rows of the battery units in each layer may be connected in series or parallel by a bus member. The at least two layers of battery units indicate that the battery in the embodiments of the present application includes the above-mentioned two layers of battery units arranged in a stacked manner at least along the vertical direction, that is, it may include more than two layers of battery units. Of course, the battery unit may be disposed at an angle with respect to the length direction Y or width direction X of the thermal management member, and the present application is not limited thereto.

[0096] The thermal management member described in the examples of the present application is corrugated, which means that the thermal management member is formed into a corrugated shape by connecting adjacent arc-shaped outer walls along the length direction Y, and the size of the uneven surface constituting the corrugation is limited by the distance between adjacent rows of battery units, and the shape of the corrugation is determined by the shape of the outer surface of the battery units. The arc-shaped outer walls of the thermal management member described in the examples of the present application are intended to allow those skilled in the art to better understand the means of the present application, and the arc shape may be a combination of any curved or straight lines, either continuous or discontinuous, such as an ellipse, a polygonal column, etc.

[0097] The temperature control system described in the embodiments of the present application refers to a system for controlling the temperature of a battery unit in a battery, and generally, the temperature control system is part of a vehicle thermal management system or a battery thermal management system, and controls the temperature of the battery unit by circulating a heat exchange fluid.

[0098] In some embodiments, as shown in Figures 7-17, a first aspect of the present invention provides a thermal management element 300 including a pair of first heat exchange surfaces 310 and a pair of second edge heat exchange surfaces 320. Wherein, the set of first heat exchange surfaces 310 includes a plurality of first heat exchange surfaces 310 for cooperating with a plurality of outer battery units 13 located on one side of the thermal management member 300 to regulate temperature, each of the first heat exchange surfaces 310 for cooperating with one outer battery unit 13 to regulate temperature; the set of second edge heat exchange surfaces 320 includes a plurality of second edge heat exchange surfaces 320 for cooperating with a plurality of intermediate battery units 14 located on the other side of the thermal management member 300 to regulate temperature, each of the second edge heat exchange surfaces 320 for cooperating with one intermediate battery unit 14 to regulate temperature, wherein the heat exchange area of ​​each first heat exchange surface 310 is a first heat exchange area S1, and the heat exchange area of ​​each second edge heat exchange surface 320 is a second heat exchange area S2, and the first heat exchange area S1 is greater than the second heat exchange area S2.

[0099] In this embodiment, the thermal management member 300 has two sets of heat exchange surfaces 310, 320 with different heat exchange areas, and can be flexibly combined with the battery units 13, 14. By installing two thermal management members on both sides of one layer of the middle battery unit 14, each middle battery unit 14 in one layer exchanges heat with the two second edge heat exchange surfaces 320 with small heat exchange areas of the two thermal management members 300, but each outer battery unit 13 in one layer of the outer battery unit 13 can exchange heat with the first heat exchange surface 310 with large heat exchange area of ​​one thermal management member 300, so that the middle battery unit 14 and the outer battery unit 13 can basically achieve the same heat exchange effect. The thermal management member 300 of this embodiment can meet the uniform heat exchange requirements of a battery with an odd number of battery units and a battery with an even number of battery units, and can more flexibly adjust the thickness of the battery, thereby enhancing the spatial adaptability of the battery.

[0100] In some embodiments, a first heat exchange flow path 34 is formed within the thermal management member 300 to provide a path for the movement of heat exchange fluid, and the thermal management member 300 includes a first side plate 31 and a second side plate 32 arranged opposite each other and having the first heat exchange flow path 34 formed therebetween, a set of first heat exchange surfaces 310 is formed on the first side plate 31, and the heat exchange fluid provides temperature regulation to the outer battery unit 13 via the first heat exchange surfaces 310, and a set of second edge heat exchange surfaces 320 is formed on the second side plate 32, and the heat exchange fluid further provides temperature regulation to the intermediate battery unit 14 via the second edge heat exchange surfaces 320.

[0101] According to the above-mentioned installation, the first side plate 31 of the thermal management member 300 is provided with a plurality of first heat exchange surfaces 310, at least one of the first heat exchange surfaces 310 having a first heat exchange area S1, and the second side plate 32 is provided with a plurality of second edge heat exchange surfaces 320, at least one of the second edge heat exchange surfaces 320 having a second heat exchange area S2, and the first heat exchange area S1 is larger than the second heat exchange area S2, i.e., the first side plate 31 and the second side plate 32 of the thermal management member 300 have different portions that exchange heat with the battery unit. Thus, by installing two heat management elements 300 on both sides of one layer of middle battery units 14, one layer of middle battery units 14 can exchange heat with the two second edge heat exchange surfaces 320 of the two heat management elements 300 with small heat exchange areas, while the outer battery units 13 can exchange heat with the one first heat exchange surface 310 of the one heat management element 300 with large heat exchange area, so that the middle battery units 14 and the outer battery units 13 can basically achieve the same heat exchange effect. In this way, the heat management element 300 of this embodiment can make one first heat exchange surface 310 of one heat management element 300 or two second edge heat exchange surfaces 320 of the two heat management elements exchange heat with one layer of battery units according to different positions, so as to basically achieve the same cooling effect, thus realizing uniform heat exchange of any one layer of battery units, having excellent space adaptability, and meeting different space usage requirements.

[0102] In some embodiments, the first heat exchange areas S1 of the first heat exchange surfaces 310 in the first side plate 31 may be the same or different from each other, and the second heat exchange areas S2 of the second edge heat exchange surfaces 320 in the second side plate 32 may be the same or different from each other. When the first heat exchange areas S1 of the first heat exchange surfaces 310 in the first side plate 31 are the same as each other and the second heat exchange areas S2 of the second edge heat exchange surfaces 320 in the second side plate 32 are the same as each other, the first heat exchange area S1 being larger than the second heat exchange area S2 in the above embodiments specifically refers to the first heat exchange areas S1 of the first heat exchange surfaces 310 in the first side plate 31 being all larger than the second heat exchange areas S2 of the second edge heat exchange surfaces 320 in the second side plate 32. When the first heat exchange areas S1 of the multiple first heat exchange surfaces 310 in the first side plate 31 are different from each other, or the second heat exchange areas S2 of the multiple second edge heat exchange surfaces 320 in the second side plate 32 are different from each other, the first heat exchange area S1 being larger than the second heat exchange area S2 described in the above embodiment may specifically mean that the first heat exchange area S1 of at least one first heat exchange surface 310 among the multiple first heat exchange surfaces 310 in the first side plate 31 is larger than the second heat exchange area S2 of at least one second edge heat exchange surface among the multiple second edge heat exchange surfaces 320 in the second side plate 32, or the average value of the first heat exchange areas S1 of the multiple first heat exchange surfaces 310 in the first side plate 31 is larger than the average value of the second heat exchange areas S2 of the multiple second edge heat exchange surfaces 320 in the second side plate 32.

[0103] 7 and 10 as an example, the thermal management member 300 is formed into a corrugated shape by connecting adjacent arc-shaped outer walls along the length direction Y. A set of first heat exchange surfaces 310 is disposed on the inwardly recessed arc-shaped outer wall portion of the thermal management member 300 of the first side plate 31, the set of first heat exchange surfaces 310 are arranged along the length direction Y, and each of the first heat exchange surfaces 310 is arranged along the width direction X. A set of second edge heat exchange surfaces 320 is disposed on the inwardly recessed arc-shaped outer wall portion of the thermal management member 300 of the second side plate 32, the set of second edge heat exchange surfaces 320 are arranged along the length direction Y, and each of the second edge heat exchange surfaces 320 is arranged along the width direction X.

[0104] In some embodiments, as shown in FIG. 7, the thermal management member 300 of the present embodiment further includes a first fluid inlet 36 and a first fluid outlet 37, both of which are in communication with the first heat exchange passage 34 within the thermal management member 300.

[0105] In some embodiments, as shown in Figures 8, 9, 16 and 17, a plurality of first heat exchange surfaces 310 in the first side plate 31 of the thermal management member 300 of an embodiment of the present application are formed on a portion of the arcuate outer wall of the first side plate 31, and a second edge heat exchange surface 320 is formed on a portion of the arcuate outer wall of the second side plate 32.

[0106] The definition of the heat exchange surface is described below, taking the first heat exchange surface 310 as an example, and the definition of other heat exchange surfaces in the embodiments of the present application, such as the second edge heat exchange surface 320, can be referred to the first heat exchange surface 310. When an outer battery unit 13 directly contacts the first side plate 31 to perform heat exchange by heat conduction, the first heat exchange surface 310 is a portion where the first side plate 31 and the outer battery unit 13 are in direct contact with each other. When a heat conductive layer is disposed between the outer battery unit 13 and the first side plate 31, the first heat exchange surface 310 is a portion where the first side plate 31 and the outer battery unit 13 are in indirect contact with each other through the heat conductive layer to perform heat exchange by conduction. The first heat exchange surface 310 may be one continuous surface or may be composed of a plurality of partitioned heat exchange partial surfaces, and a heat exchange partial surface is a portion where a local portion of the first side panel 31 and a local portion of one of the outer battery units 13 are in indirect contact with each other via a thermally conductive layer to perform conductive heat exchange. Specific methods will be described in detail in the following examples.

[0107] 10 , the thermal management member includes a first fluid inlet 36 and a first fluid outlet 37 in communication with a first heat exchange passage 34. One first heat exchange passage 34 includes a plurality of passage sections arranged in a bypass manner, with a partition 33 provided between two adjacent passage sections, and the first heat exchange passage 34 further includes an intermediate passage section 342, with the two adjacent passage sections in communication with each other via the intermediate passage section 342. 10 , in this embodiment, one first heat exchange passage 34 is provided with a first passage partial section 341 communicating with a first fluid inlet 36 and a second passage partial section 343 communicating with a first fluid outlet 37, the first passage partial section 341 and the second passage partial section 343 extend along the length direction Y of the heat management member, and a partition section 33 is provided between the first passage partial section 341 and the second passage partial section 343 to separate the first passage partial section 341 and the second passage partial section 343. The intermediate passage partial section 342 is located at an edge of the partition section 33 and extends along the width direction X of the heat management member, and the adjacent first passage partial section 341 and second passage partial section 343 communicate with each other via the intermediate passage partial section 342. Overall, the first heat exchange passage 34 forms a detouring structure, and the adjacent first passage partial section 341 and second passage partial section 343 are folded 180°, making the cooling space for cooling the battery unit relatively compact. The number of sections of one first heat exchange passage 34 is determined according to the battery dimensions that need to be actually cooled and the actual usage environment, and the specific number and length of one passage partial section are not limited.Since the heat exchange fluid temperature near the first fluid inlet 36 is relatively low and the heat exchange fluid temperature near the first fluid outlet 37 is relatively high, one heat exchange surface (including the first heat exchange surface 310 and the second edge heat exchange surface 320) that exchanges heat with one battery unit (including the outer battery unit 13 and the intermediate battery unit 14) includes a low-temperature heat exchange partial surface near the first fluid inlet 36, and a high-temperature heat exchange partial surface near the first fluid outlet 37. This neutralizes the temperature and prevents extreme conditions from occurring in the battery unit temperature. In addition, there is no significant difference between the battery unit temperature near the first fluid inlet 36 and the first fluid outlet 37 and the battery unit temperature near the intermediate flow path partial section 342 (located at the end of the thermal management member 300), thereby improving the temperature uniformity of the battery unit.

[0108] 7 and 10, one first heat exchange passage 34 is provided on each side of the connecting line between the first fluid inlet 36 and the first fluid outlet 37. Specifically, the first fluid inlet 36 and the first fluid outlet 37 are disposed at a middle position along the longitudinal direction Y of the thermal management member, and one first heat exchange passage 34 is disposed on each side of the connecting line between the first fluid inlet 36 and the first fluid outlet 37, and both first heat exchange passages 34 on both sides are connected to the first fluid inlet 36 and the first fluid outlet 37, so that the first fluid inlet 36 and the first fluid outlet 37 can simultaneously supply fluid to the two first heat exchange passages 34. The first fluid inlet 36 and the first fluid outlet 37 are disposed in the middle of the heat management member 300, and one first heat exchange passage 34 is disposed on each side of the connecting line between the first fluid inlet 36 and the first fluid outlet 37. This shortens the flow distance of the heat exchange fluid and increases the parallel connection circuit of the heat exchange fluid to effectively reduce the flow resistance, thereby contributing to improving the temperature consistency of the battery units on both sides of the connecting line between the first fluid inlet 36 and the first fluid outlet 37 of the heat management member 300.

[0109] In some embodiments, the first heat exchange passage 34, the first side plate 31, and the second side plate 32 will be described with reference to FIGS.

[0110] 10, one first heat exchange channel 34 in the heat management member 300 is divided into a first channel subsection 341, a second channel subsection 343, and a middle channel subsection 342. Among them, the first channel subsection 341 and the second channel subsection 343 are mainly used for temperature regulation in cooperation with the battery unit. The first channel subsection 341 and the second channel subsection 343 have basically the same structure, and the first channel subsection 341 will be described as an example.

[0111] In some embodiments, as shown in Figures 10, 11, 16 and 17, at the location where the first flow path partial section 341 is provided, a first side flow path 1 partial section 314 is formed at a position corresponding to the first flow path 1 partial section 341 on the first side plate 31 of the thermal management member 300, and a plurality of first heat exchange surface 1 partial sections 311 are formed aligned along the length Y direction at a portion of the first side flow path 1 partial section 314 that is aligned with the outer battery unit 13. At the location where the second flow path partial section 343 is provided, a first side flow path 2 partial section 315 is formed at a position corresponding to the second flow path partial section 343 on the first side plate 31 of the thermal management member 300, and a plurality of first heat exchange surface 2 partial sections 312 are formed aligned along the length Y direction at a portion of the first side flow path 2 partial section 315 that is aligned with the outer battery unit 13.

[0112] As shown in Figures 10 and 11, the first side flow path 3100 includes a plurality of first side partial flow paths 3141-3144 and 3151-3154 arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, and first heat exchange partial surfaces 3111-3114 and 3121-3124 are formed in the portions of each of the first side partial flow paths 3141-3144 and 3151-3154 that are associated with one outer battery unit, the first heat exchange partial surfaces 3111-3114 constitute the first heat exchange surface 1 partial section 311, the first heat exchange partial surfaces 3121-3124 constitute the first heat exchange surface 2 partial section 312, and the first heat exchange surface 1 partial section 311 and the first heat exchange surface 2 partial section 312 jointly constitute the first heat exchange surface 310. That is, each first heat exchange surface 310 includes a plurality of first heat exchange partial surfaces 3111-3114 and 3121-3124, and the first heat exchange area S1 is the sum of the surface areas of the plurality of first heat exchange partial surfaces 3111-3114 and 3121-3124. However, without being limited thereto, when the first heat exchange surface 1 partial section 311 or a smaller first heat exchange partial surface 3111-3114 is used to adjust the temperature of one battery unit, the first heat exchange surface 310 may be one first heat exchange surface 1 partial section 311 or a smaller first heat exchange partial surface 3111-3114.

[0113] 14, the second side flow passage 3200 includes a plurality of second side partial flow passages 3241-3246 and 3251-3256 arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, and second edge heat exchange partial surfaces 3211-3216 and 3221-3226 are formed in the portions of the second side partial flow passages 3241-3246 and 3251-3256 associated with one of the middle battery units. The second heat exchange partial surfaces 3211-3216 constitute the second heat exchange surface 1 partial section 321, the second heat exchange partial surfaces 3221-3226 constitute the second heat exchange surface 2 partial section 322, and the second heat exchange surface 1 partial section 321 and the second heat exchange surface 2 partial section 322 jointly constitute the second heat exchange surface 320. That is, each second edge heat exchange surface 320 includes a plurality of second edge heat exchange partial surfaces 3211-3216 and 3221-3226, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces 3211-3216 and 3221-3226. However, without being limited thereto, when the second heat exchange surface 1 partial section 321 or a plurality of smaller second edge heat exchange partial surfaces 3211-3216 are used to adjust the temperature of one battery unit, the second edge heat exchange surface 320 may be the second heat exchange surface 1 partial section 321 or a plurality of smaller second edge heat exchange partial surfaces 3211-3216.

[0114] In this embodiment, by adjusting the surface area and quantity of the first heat exchange partial surfaces 3111-3114, 3121-3124 and the second edge heat exchange partial surfaces 3211-3216, 3221-3226, not only can the second heat exchange area S2 be smaller than the first heat exchange area S1, but the proportional relationship between the second heat exchange area S2 and the first heat exchange area S1 can be accurately adjusted, and by combining according to actual requirements, the proportionality between the second heat exchange area S2 and the first heat exchange area S1 can be optimized, thereby realizing more accurate heat exchange control.

[0115] Specifically, as shown in Figures 10, 11, 16 and 17, the first side flow path 3100 includes two first side flow path partial sections, i.e., first side flow path 1 partial section 314 and first side flow path 2 partial section 315, arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid.

[0116] The first side flow channel 1 partial section 314 includes a plurality of first side partial channels. In some embodiments, the first side flow channel 1 partial section 314 includes four first side partial channels, such as a first side 1 partial channel 3141, a first side 2 partial channel 3142, a first side 3 partial channel 3143, and a first side 4 partial channel 3144, and the four first side partial channels 3141, 3142, 3143, and 3144 are separated by a small first side partition. 317 The first side partition is 317 are recessed into the thermal management member 300, are spaced a predetermined distance from the outer battery unit, and do not directly or indirectly contact the outer battery unit 13. Four first side partial flow paths protrude from the first side plate 31, and a first heat exchange partial surface is formed at a portion of each first side partial flow path that interfaces with one outer battery unit 13, that is, one first heat exchange partial surface is formed at a portion of the arc-shaped outer wall recessed into the thermal management member 300 of each first side partial flow path that interfaces with the outer battery unit 13, and the first heat exchange partial surface is adapted to the outer shape of the outer battery unit 13, and the first heat exchange partial surface directly contacts the outer battery unit 13 or indirectly contacts the outer battery unit 13 via a heat conductive layer to exchange heat. Adjacent first heat exchange partial surfaces are first side partition sections 317 Since the first side flow passages are partitioned from each other via the first heat exchange portion, in the inwardly recessed arc-shaped outer wall of the heat management member 300 of each first side flow passage, only the first heat exchange portion surface directly contacts the outer battery unit 13 or indirectly contacts the outer battery unit 13 via the heat conduction layer to exchange heat. 317In this way, the heat exchange area of ​​the first heat exchange surface can be adjusted by changing the area and number of the first heat exchange partial surface and the first side partition without directly or indirectly contacting the outer battery unit 13. The first side channel 2 partial section 315 also includes four first side partial channels, such as a first side 5 partial channel 3151, a first side 6 partial channel 3152, a first side 7 partial channel 3153, and a first side 8 partial channel 3154. That is, the first side channel 3100 includes eight first side partial channels, i.e., a first side 1 partial channel 3141, a first side 2 partial channel 3142, a first side 3 partial channel 3143, a first side 4 partial channel 3144, a first side 5 partial channel 3151, a first side 6 partial channel 3152, a first side 7 partial channel 3153, and a first side 8 partial channel 3154, arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid.

[0117] 10, one first heat exchange surface 1 partial section 311 includes a first heat exchange 1 partial surface 3111 located in a first side 1 partial flow path 3141, a first heat exchange 2 partial surface 3112 located in a first side 2 partial flow path 3142, a first heat exchange 3 partial surface 3113 located in a first side 3 partial flow path 3143, and a first heat exchange 4 partial surface 3114 located in a first side 4 partial flow path 3144. The first heat exchange 1 partial surface 3111, the first heat exchange 2 partial surface 3112, the first heat exchange 3 partial surface 3113, and the first heat exchange 4 partial surface 3114 are located on the same concave arc-shaped outer wall of the first outer wall 31 and are arranged along the width X direction. Similarly, in the region where the second flow path partial section 343 is provided, a first side flow path 2 partial section 315 is also formed at a position corresponding to the second flow path partial section 343 in the first side plate 31 of the thermal management member 300, and a plurality of first heat exchange surface 2 partial sections 312 are formed at a region of the first side flow path 2 partial section 315 aligned with the outer battery unit 13, aligned along the length Y direction. Each of them is aligned in parallel with one first heat exchange surface 1 partial section 311 in the width X direction. Each first heat exchange surface 2 partial section 312 also includes four first heat exchange partial surfaces 3121-3124 aligned along the width X direction. The structure of the first heat exchange surface 2 partial section 312 can be referred to the structure of the first heat exchange surface 1 partial section 311.

[0118] Specifically, as shown in FIG. 10, one first heat exchange surface 1 partial section 311 and one first heat exchange surface 2 partial section 312 arranged in parallel in the width X direction constitute one first heat exchange surface 310. That is, the first heat exchange surface 310 is arranged in the first flow path partial section 341 and the second flow path partial section 343. One first heat exchange surface 310 is composed of eight first heat exchange partial surfaces 3111-3114, 3121-3124. However, this is not limited thereto, and the number of partial sections and the number of partial surfaces of the first heat exchange surface depend on the number of flow path partial sections and the number of first side flow path partial sections in each flow path partial section, and may be determined according to the battery dimensions that actually need to be cooled and the actual usage environment, and are not specifically limited. One first heat exchange surface 310 adjusts the temperature in cooperation with one outer battery unit 13, and one outer battery unit 13 may include one battery cell or may include multiple battery cells arranged coaxially.

[0119] 10, the first heat exchange area S1 of one first heat exchange surface 310 is the sum of the surface areas of the multiple first heat exchange partial surfaces which regulate the temperature in cooperation with one outer battery unit 13. Specifically, the first heat exchange area S1 of one first heat exchange surface 310 is the sum of the surface areas of the four first heat exchange partial surfaces 3111-3114 of one first heat exchange surface 1 partial section 311 and the four first heat exchange partial surfaces 3121-3124 of one first heat exchange surface 2 partial section 312.

[0120] In some embodiments, each first heat exchange surface 310 has a first heat exchange width W1 and each second edge heat exchange surface 320 has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, wherein the first heat exchange width W1 is the sum of the widths of the multiple first heat exchange partial surfaces, the second heat exchange width W2 is the sum of the widths of the multiple second edge heat exchange partial surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.9.

[0121] In this embodiment, the first heat exchange area and the second heat exchange area are adjusted by adjusting the ratio of the first heat exchange width W1 of the first heat exchange surface 320 to the second heat exchange width W2 of the second edge heat exchange surface 320. The first heat exchange width W1 of the first heat exchange surface 310 is adjusted by adjusting the width and number of the first heat exchange partial surface, and the second heat exchange width W2 of the second edge heat exchange surface 320 is adjusted by adjusting the width and number of the second edge heat exchange partial surface. By controlling the ratio of the first heat exchange width W1 to the second heat exchange width W2, the first heat exchange area S1 and the second heat exchange area S2 can be easily adjusted. Hereinafter, a detailed description will be given based on the accompanying drawings.

[0122] In some embodiments, as shown in Figures 11 and 12, in one first heat exchange surface 1 partial section 311, the widths of the first side 1 partial flow passage 3141, the first side 2 partial flow passage 3142, the first side 3 partial flow passage 3143, and the first side 4 partial flow passage 3144 are all unchanged in the length Y direction. The first heat exchange 1 partial surface 3111 has a first partial width W11, the first heat exchange 2 partial surface 3112 has a second partial width W12, the first heat exchange 3 partial surface 3113 has a third partial width W13, and the first heat exchange 4 partial surface 3114 has a fourth partial width W14. The first partial width W11, the second partial width W12, the third partial width W13, and the fourth partial width W14 may be the same or different, and are not limited. For example, in FIG. 12, the second portion width W12 and the third portion width W13 may be larger than the first portion width W11 and the fourth portion width W14. In this way, the width of one first heat exchange surface 310 is the sum of the widths of the multiple first heat exchange partial surfaces. The structure of the first heat exchange surface 2 partial section 312 is the same as or symmetrical to the structure of the first heat exchange 1 partial surface 3111. Specifically, in FIG. 10, the width of one first heat exchange surface 310 is the sum of the widths of the four heat exchange partial surfaces 3111-3114 of one first heat exchange surface 1 partial section 311 and the four heat exchange partial surfaces 3121-3124 of one first heat exchange surface 2 partial section 312. The width of the first heat exchange surface 310 can be adjusted by changing the width and number of the first heat exchange partial surfaces and the first side partitions.

[0123] In some embodiments, the width along the length Y of the side partial flow passage corresponding to one heat exchange surface section is not a fixed value but may vary, in which case the first width of one first heat exchange surface section is the average width in the length Y direction, and the width of one first heat exchange surface section 310 is the sum of the average widths of the multiple first heat exchange surface sections.

[0124] 14, the second side flow passage 3200 includes two second side flow passage partial sections arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, i.e., the second side flow passage 1 partial section 324 and the second side flow passage 2 partial section 325. The second side flow passage 3200 cooperates with the first side flow passage 3100 to form the first heat exchange flow passage 34.

[0125] Specifically, as shown in Fig. 13 to Fig. 17. Each second-side flow passage 1 partial section 324 includes a plurality of second-side partial flow passages, and in some embodiments, one second-side flow passage 1 partial section 324 includes six second-side partial flow passages such as a second-side 1 partial flow passage 3241, a second-side 2 partial flow passage 3242, a second-side 3 partial flow passage 3243, a second-side 4 partial flow passage 3244, a second-side 5 partial flow passage 3245, and a second-side 6 partial flow passage 3246, and the six second-side partial flow passages are partitioned via a number of second-side partitions 325 and 326. The second-side partitions 325 and 326 are recessed into the thermal management member, are separated by a predetermined distance from the intermediate battery unit 14, and do not directly or indirectly contact the intermediate battery unit 14. Six second side partial flow paths protrude from the second side plate 32, and a second edge heat exchange partial surface is formed at a portion of each second side partial flow path aligned with one of the intermediate battery units 14, that is, one second edge heat exchange partial surface is formed at a portion of the arc-shaped outer wall of each second side partial flow path aligned with the intermediate battery unit 14, recessed into the heat management member 300. Since adjacent second edge heat exchange partial surfaces are partitioned from each other via the second side partitions 325, 326, in the arc-shaped outer wall recessed into the edge heat management member of each first side partial flow path, only the second edge heat exchange partial surface directly contacts the intermediate battery unit 14 or indirectly contacts the intermediate battery unit 14 via the heat conduction layer to exchange heat, and the second side partitions 325, 326 do not directly or indirectly contact the intermediate battery unit 14. In this way, the heat exchange area of ​​the second edge heat exchange surface can be adjusted by changing the area and number of the second edge heat exchange partial surface and the second side partitions. Similarly, one second side partial flow path 2 subsection 325 also includes six second side partial flow paths, such as second side 7 subflow path 3251, second side 8 subflow path 3252, second side 9 subflow path 3253, second side 10 subflow path 3254, second side 11 subflow path 3255, and second side 12 subflow path 3256.In other words, the second side flow path 3200 includes twelve second side partial flow paths, such as second side 1 partial flow path 3241, second side 2 partial flow path 3242, second side 3 partial flow path 3243, second side 4 partial flow path 3244, second side 5 partial flow path 3245, second side 6 partial flow path 3246, second side 7 partial flow path 3251, second side 8 partial flow path 3252, second side 9 partial flow path 3253, second side 10 partial flow path 3254, second side 11 partial flow path 3255, and second side 12 partial flow path 3256, which are arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid.

[0126] 13 to 17, in a portion where the first flow path partial section 341 is provided, a second side flow path 1 partial section 324 is formed at a position corresponding to the first flow path partial section 341 in the second side plate 32 of the thermal management member 300, and a plurality of second edge heat exchange surface 1 partial sections 321 are formed aligned along the length Y direction at a portion of the second side flow path 1 partial section 324 aligned with one intermediate cell unit 14. In a portion where the second flow path partial section 343 is provided, a second side flow path 2 partial section 325 is formed at a position corresponding to the second flow path partial section 343 in the second side plate 32 of the thermal management member 300, and a plurality of second edge heat exchange surface 2 partial sections 322 are formed aligned along the length Y direction at a portion of the second side flow path 2 partial section 325 aligned with one intermediate cell unit 14.

[0127] As shown in FIG. 14 , one second edge heat exchange surface 1 partial section 321 and one second edge heat exchange surface 2 partial section 322 arranged in parallel constitute one second edge heat exchange surface 320 .

[0128] Specifically, as shown in FIG. 14 , one second edge heat exchange surface 1 partial section 321 includes a second heat exchange 1 partial surface 3211 located in the second side 1 partial flow path 3241, a second heat exchange 2 partial surface 3212 located in the second side 2 partial flow path 3242, a second heat exchange 3 partial surface 3213 located in the second side 3 partial flow path 3243, a second heat exchange 4 partial surface 3214 located in the second side 4 partial flow path 3244, a second heat exchange 5 partial surface 3215 located in the second side 5 partial flow path 3245, and a second heat exchange 6 partial surface 3216 located in the second side 6 partial flow path 3246. The second heat exchange 1 partial surface 3211, the second heat exchange 2 partial surface 3212, the second heat exchange 3 partial surface 3213, the second heat exchange 4 partial surface 3214, the second heat exchange 5 partial surface 3215, and the second heat exchange 6 partial surface 3216 are located on the same concave arc-shaped outer wall of the second outer wall 32, and are aligned along the width X direction. Similarly, at the portion where the second flow path partial section 343 is provided, a second side flow path 2 partial section 325 is also formed at a position corresponding to the second flow path partial section 343 on the second side plate 32 of the thermal management member 300, and a plurality of second edge heat exchange surface 2 partial sections 322 aligned along the length Y direction are formed at the portion of the second side flow path 2 partial section 325 aligned with the intermediate cell unit 14. Each second edge heat exchange surface 2 partial section 322 also includes six second edge heat exchange partial surfaces 3221-3226 aligned along the width X direction. The structure of the second edge heat exchange surface 2 partial section 322 can refer to the structure of the second edge heat exchange surface 1 partial section 321.

[0129] Specifically, as shown in Fig. 14, one second edge heat exchange surface 1 partial section 321 and one second edge heat exchange surface 2 partial section 322 arranged in parallel constitute one second edge heat exchange surface 320. That is, the second heat exchange surface 320 is arranged in the first flow path partial section 341 and the second flow path partial section 343. One second edge heat exchange surface 320 is composed of 12 second edge heat exchange partial surfaces 3211-3216, 3221-3226. However, this is not limited thereto, and the number of partial sections and the number of partial surfaces of the second edge heat exchange surface 320 depends on the number of flow path partial sections and the number of second side flow path partial sections in each flow path partial section, and may be determined according to the battery dimensions that actually need to be cooled and the actual usage environment, and is not specifically limited. A second edge heat exchange surface 320 is associated with an intermediate battery unit 14 to regulate temperature, and the intermediate battery unit 14 may include one battery cell or multiple battery cells.

[0130] As can be seen from the above embodiment, the second heat exchange area S2 of one second edge heat exchange surface 320 is the sum of the surface areas of the multiple second edge heat exchange partial surfaces which regulate the temperature in cooperation with one intermediate battery unit 14. Specifically, the second heat exchange area S2 of one second edge heat exchange surface 320 is the sum of the surface areas of the six second edge heat exchange partial surfaces 3211-3216 of one second edge heat exchange surface 1 partial section 321 and the six second edge heat exchange partial surfaces 3221-3226 of one second edge heat exchange surface 2 partial section 322.

[0131] 15, in one second edge heat exchange surface 1 subsection 321, the widths of the second side 1 subchannel 3241, the second side 2 subchannel 3242, the second side 3 subchannel 3243, the second side 4 subchannel 3244, the second side 5 subchannel 3245, and the second side 6 subchannel 3246 are unchanged in the length Y direction. The second heat exchange 1 subsurface 3211 has a first subwidth W21, the second heat exchange 2 subsurface 3212 has a second subwidth W22, the second heat exchange 3 subsurface 3213 has a third subwidth W23, the second heat exchange 4 subsurface 3214 has a fourth subwidth W24, the second heat exchange 5 subsurface 3215 has a fifth subwidth W25, and the second heat exchange 6 subsurface 3216 has a sixth subwidth W26. The first portion width W21, the second portion width W22, the third portion width W23, the fourth portion width W24, the fifth portion width W25, and the sixth portion width W26 may be the same or different, and are not limited. In this way, the width of one second edge heat exchange surface 320 is the sum of the widths of the multiple second edge heat exchange partial surfaces. Specifically, in FIG. 15, the width of one second edge heat exchange surface 320 is the sum of the widths of the six heat exchange partial surfaces 3211-3216 of one second edge heat exchange surface 1 partial section 321 and the six heat exchange partial surfaces 3221-3226 of one second edge heat exchange surface 2 partial section. The width of the second edge heat exchange surface 320 can be adjusted by changing the width and number of the second edge heat exchange partial surfaces and the second side partitions 325, 326.

[0132] In some embodiments, the width of the side flow passage of one heat exchange surface section along the length Y direction is not a fixed value but may vary, and the width of one second edge heat exchange surface is the average width of the second edge heat exchange surface along the length Y direction, and the width of one second edge heat exchange surface is the sum of the average widths of the multiple second edge heat exchange surfaces.

[0133] In some embodiments, the first heat exchange flow passage 34 includes a plurality of sub-flow passages arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, and each sub-flow passage includes at least one first side partial flow passage and at least one second side partial flow passage, and the first side partial flow passage and the second side partial flow passage constituting one sub-flow passage are in communication with each other.

[0134] In this embodiment, by arranging some of the first side partial flow paths and multiple second side partial flow paths so that they are connected to each other, the first heat exchange flow path 34 is divided into multiple sub-flow paths in which the heat exchange fluid inside each of the sub-flow paths can simultaneously exchange heat with the first side plate and the second side plate, thereby simplifying the design of the first heat exchange flow path 34 and facilitating the manufacture of the thermal management member.

[0135] 16 and 17, the first flow path partial section 341 will be described as an example. The second flow path partial section 343 has the same structure as the first flow path partial section. By arranging some of the first side partial flow paths 3100 and a plurality of second side partial flow paths 3200 to communicate with each other, the first heat exchange flow path 34 is divided into a plurality of sub-flow paths in which the heat exchange fluid inside each of the sub-flow paths can simultaneously exchange heat with the first side plate 31 and the second side plate 32, and the design of the first heat exchange flow path 34 is simplified and the heat management member 300 is easily manufactured. In some embodiments, the sum of the heat exchange areas of at least one first side partial flow path 3100 constituting one sub-flow path is larger than the sum of the heat exchange areas of at least one second side partial flow path 3200. In some embodiments, the sum of the widths of at least one first side partial flow path 3100 constituting one sub-flow path is larger than the sum of the widths of at least one second side partial flow path 3200.

[0136] Specifically, a first side partition portion 313 is provided on the first side plate 31, and a second side partition portion 323 is provided on the second side plate 32, and the first side partition portion 313 and the second side partition portion 323 are recessed into the interior of the heat management member 300 and connected to form partition portion 33, dividing the heat management member 300 into a first flow path subsection 341 and a second flow path subsection 343, which are spaced apart from each other.

[0137] In some embodiments, as shown in FIGS. 16 and 17, the first side channel 3100 of the first side plate 31 and the second side channel 3200 of the second side plate 32 are combined to form the first heat exchange channel 34. Specifically, the first heat exchange channel 34 may include a plurality of subchannels arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid. Taking the first channel partial section 341 as an example, the first channel partial section 341 includes a plurality of subchannels arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, namely, a first subchannel 3411, a second subchannel 3412, a third subchannel 3413, and a fourth subchannel 3414. The structure of the second channel partial section 343 can be referred to the structure of the first channel partial section 341. The first side channel partial section 3100 and the second side channel partial section 3200 constituting one subchannel are connected to each other.

[0138] In some embodiments, the first side flow passage 3100 includes a plurality of first side partial flow passages arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a first heat exchange partial surface is formed in a portion of each first side partial flow passage associated with one outer battery unit, and each first heat exchange surface includes a plurality of first heat exchange partial surfaces. The second side flow passage 3200 includes a plurality of second side partial flow passages arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed in a portion of each second side partial flow passage associated with one middle battery unit, and each second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

[0139] In this embodiment, the first side flow passage 3100 is divided into a plurality of first side partial flow passages, and the first heat exchange area S1 is the sum of the surface areas of the plurality of first heat exchange partial surfaces; the second side flow passage 3200 is divided into a plurality of second side partial flow passages, and the second heat exchange area S2 is the sum of the surface areas of the second edge heat exchange partial surfaces of the plurality of second side partial flow passages; by adjusting the surface areas and quantities of the first heat exchange partial surfaces and the second edge heat exchange partial surfaces, not only can the second heat exchange area S2 be smaller than the first heat exchange area S1, but the proportional relationship between the second heat exchange area S2 and the first heat exchange area S1 can also be accurately adjusted; and by combining according to actual requirements, the proportionality between the second heat exchange area S2 and the first heat exchange area S1 can be optimized, thereby realizing more accurate heat exchange control.

[0140] Specifically, as shown in FIGS. 16 and 17, taking the first flow passage partial section 341 of the first side plate 31 as an example, the second flow passage partial section 343 has a similar structure to the first flow passage partial section 341 .

[0141] The first flow path partial section 341 of the first side plate 31 is provided with four first side partial channels arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, i.e., a first side 1 partial channel 3141, a first side 2 partial channel 3142, a first side 3 partial channel 3143, and a first side 4 partial channel 3144. The first flow path partial section 341 of the second side plate 32 is provided with six second side partial channels, i.e., a second side 1 partial channel 3241, a second side 2 partial channel 3242, a second side 3 partial channel 3243, a second side 4 partial channel 3244, a second side 5 partial channel 3245, and a second side 6 partial channel 3246.

[0142] After the first side plate 31 and the second side plate 32 are assembled together, the first flow passage portion 341 is divided into four sub-passages, including a first sub-passage 3411, a second sub-passage 3412, a third sub-passage 3413, and a fourth sub-passage 3414. Among them, the first sub-passage 3411 is formed by combining the first side 1 partial passage 3141 and the second side 1 partial passage 3241 so as to be in communication with each other, the width W11 of the first side 1 partial passage 3141 is equal to or larger than the width W21 of the second side 1 partial passage 3241, and the heat exchange area of ​​the first side 1 partial passage 3141 is also equal to or larger than the heat exchange area of ​​the second side 1 partial passage 3241, and the second sub-passage 3412 is formed by connecting the first side 2 partial passage 3142, the second side 2 partial passage 3242, and the second side 3 partial passage 3243, respectively. As necessary to explain, as shown in FIG. 17, the second side partition 326 separates the second side 2 part flow passage 3242 and the second side 3 part flow passage 3243, but the second side partition 326 is not entirely connected to the first side plate 31, and since the width W12 of the first side 2 part flow passage 3142 is greater than the sum W22 + W23 of the widths of the second side 2 part flow passage 3242 and the second side 3 part flow passage 3243, the first side 2 part flow passage 3142, the second side 2 part flow passage 3242 and the second side 3 part flow passage 3243 are connected to each other to form the second sub-flow passage 3412, and the heat exchange area of ​​the first side 2 part flow passage 3142 is also greater than the sum of the heat exchange areas of the second side 2 part flow passage 3242 and the second side 3 part flow passage 3243.

[0143] For the same reason, the third sub-channel 3413 is configured by connecting the first-side 3-part channel 3143, the second-side 4-part channel 3244, and the second-side 5-part channel 3245 to each other, and the width W13 of the first-side 3-part channel 3143 is larger than the sum W24+W25 of the widths of the second-side 4-part channel 3244 and the second-side 5-part channel 3245, and the fourth sub-channel 3414 is configured by combining the first-side 4-part channel 3144 and the second-side 6-part channel 3246 so as to connect them to each other, and the width W14 of the first-side 4-part channel 3144 is larger than the width W26 of the second-side 6-part channel 3246. In other words, the first-side part channel and the second-side part channel constituting one sub-channel are connected to each other.

[0144] As can be seen by comparing Figures 16 and 17, the first heat exchange width W1, which is the overall width of one first heat exchange surface 310, is the sum of the widths of the four heat exchange partial surfaces 3111-3114 of one first heat exchange surface 1 subsection 311 and the four heat exchange partial surfaces 3121-3124 of one first heat exchange surface 2 subsection 312, and in some embodiments, the first heat exchange width W1 is twice the sum of the widths of the four heat exchange partial surfaces 3111-3114 of the first heat exchange surface 1 subsection 311, and may be considered to be W1 = 2 * (W11 + W12 + W13 + W14).

[0145] The second heat exchange width W2, which is the overall width of one second edge heat exchange surface 320, is the sum of the widths of the six heat exchange partial surfaces 3211-3216 of one second edge heat exchange surface 1 subsection 321 and the six heat exchange partial surfaces 3221-3226 of one second edge heat exchange surface 2 subsection, and in some embodiments, the second heat exchange width W2 may be considered to be twice the sum of the widths of the six heat exchange partial surfaces 3211-3216 of the second edge heat exchange surface 1 subsection 321, and W2=2*(W21+W22+W23+W24+W25+W26). The first heat exchange width W1 of at least one first heat exchange surface 310 is greater than the second heat exchange width W2 of at least one second edge heat exchange surface 320 if W11+W12+W13+W14>W21+W22+W23+W24+W25+W26, where W1>W2.

[0146] When the length of direct or indirect contact in the length Y direction between each battery unit and the first heat exchange surface 310 and the second edge heat exchange surface 320 of the thermal management member 300 is essentially the same, the first heat exchange area S1 of one first heat exchange surface 310 is the sum of the heat exchange areas of the four heat exchange partial surfaces 3111-3114 of one first heat exchange surface 1 partial section 311 and the four heat exchange partial surfaces 3121-3124 of one first heat exchange surface 2 partial section 312. The second heat exchange area S2 of one second edge heat exchange surface 320 is the sum of the heat exchange areas of the six heat exchange partial surfaces 3211-3216 of one second edge heat exchange surface 1 partial section 321 and the six heat exchange partial surfaces 3221-3226 of one second edge heat exchange surface 2 partial section. When the overall width of the first heat exchange surface 310 is greater than the overall width of the second edge heat exchange surface 320, the first heat exchange area S1 is also greater than the second heat exchange area S2, S1>S2.

[0147] 18 and 19, FIG. 19 shows a local schematic diagram of the conductive heat exchange between the surface of the outer battery unit 13 and the first heat exchange surface 310 as shown in a side view along the Y direction, and FIG. 18 shows a local schematic diagram of the conductive heat exchange between the surface of the intermediate battery unit 14 and the second edge heat exchange surface 320 as shown in a side view along the Y direction. As can be seen from FIG. 18 and 19, the first heat exchange width W1 is larger than the second heat exchange width W2, W1>W2, and the first heat exchange area S1 is also larger than the second heat exchange area S2, S1>S2.

[0148] In this embodiment, by adjusting the width / area of ​​the partial flow passages in the first side plate 31 and the second side plate 32 and the number of the partial flow passages, the proportional relationship between the second heat exchange area S2 and the first heat exchange area S1 can be precisely adjusted, and the proportionality between the second heat exchange area and the first heat exchange area can be properly adjusted by combining according to actual requirements, so as to realize more accurate heat exchange control, and further, even if the two side plates 31 and 32 of the heat management member are associated with battery units of the same specification, it is possible to form different cooling effects on the battery units in the first side plate 31 and the second side plate 32. In addition, by arranging some of the first side partial flow passages and the second side partial flow passages to be in communication with each other, the heat exchange fluid in the first heat exchange flow passage 34 can simultaneously exchange heat with the battery units outside the first side plate 31 and the second side plate 32, which simplifies the design of the first heat exchange flow passage 34 and facilitates the manufacture of the heat management member. Of course, a separator may be further installed between the first side plate 31 and the second side plate 32 so that the first side flow path and the second side flow path are not connected to each other, thereby forming an independent first heat exchange flow path 34.

[0149] In some embodiments, the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.9, for example, W2 / W1 can be selected from 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, but is not limited to these specific values.

[0150] In some embodiments, the ratio of the second heat exchange area S2 to the first heat exchange area S1 is between 0.1-0.9, and S2 / S1 can be selected from 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, but is not limited to these specific values.

[0151] In some embodiments not shown in the figures, only one first side channel 3100 may be formed in the first side plate 31, and no further partial channels are provided in the first side channel 3100. The second side channel 3200 of the second side plate 32 may further include a plurality of second side partial channels spaced apart from each other as shown in the above embodiments, and one first side channel 3100 communicates with all the second side partial channels. A second edge heat exchange partial surface is formed in a portion of each second side partial channel that is associated with one intermediate battery unit, and each second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces. There is one first side channel 3100, and the second side channel 3200 is divided into a plurality of second side partial channels, and the second heat exchange area S2 is the sum of the surface areas of the second edge heat exchange partial surfaces of the plurality of second side partial channels. By adjusting the surface area and quantity of the second edge heat exchange part surface, not only can the second heat exchange area be made smaller than the first heat exchange area, but the proportional relationship between the second heat exchange area S2 and the first heat exchange area S1 can also be accurately adjusted, and by combining according to actual requirements, the proportionality between the second heat exchange area S2 and the first heat exchange area S1 can be made appropriate, thereby realizing more accurate heat exchange control.

[0152] In some embodiments, the one first side flow passage 3100 and the multiple second side partial flow passages communicate with each other to form the first heat exchange flow passage 34. In these embodiments, by arranging the one first side flow passage 3100 and the multiple second side partial flow passages to communicate with each other, the heat exchange fluid in the first heat exchange flow passage 34 can simultaneously exchange heat with the first side plate 31 and the second side plate 32, which simplifies the design of the first heat exchange flow passage 34 and makes it easier to manufacture the thermal management member 300.

[0153] In some embodiments, each first heat exchange surface has a first heat exchange width W1, each second edge heat exchange surface has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, where the first heat exchange width W1 is the width of the first heat exchange surface, the second heat exchange width W2 is the sum of the widths of the plurality of second edge heat exchange partial surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.9. By setting in this way, it is also possible to realize that the first heat exchange width W1 of each first heat exchange surface is greater than the second heat exchange width W2 of each second edge heat exchange surface, W1>W2, and the first heat exchange area S1 is also greater than the second heat exchange area S2, S1>S2. In this way, the design of the first heat exchange passage 34 can be simplified, and the manufacturing of the thermal management member is facilitated. Naturally, a separator may be further installed between the first side plate 31 and the second side plate 32 so that the first side flow path and the second side flow path are not connected to each other, thereby forming an independent first heat exchange flow path 34.

[0154] In some embodiments, the thermal management element 300 further includes a first turbulence section 316 disposed in the first side flow passage 3100 and / or the second side flow passage 3200, for generating turbulence in the heat exchange fluid flowing through the first side flow passage 3100 and / or the second side flow passage 3200. By disposing the first turbulence section 316 in the first side flow passage 3100 and / or the second side flow passage, the heat exchange fluid flowing through the first side flow passage 3100 and / or the second side flow passage 3200 can be turbulent, thereby improving the heat exchange effect of the heat exchange fluid.

[0155] 10, 11, 12, and 17, the first side plate 31 corresponding to the second sub-channel 3412 and the third sub-channel 3413 is provided with a plurality of first turbulent flow sections 316 protruding from the first-side second partial channel 3142 and the first-side third partial channel 3143 into the heat management member 300, and the first turbulent flow sections 316 may contact the second-side partition section 326 of the opposing second side plate 32, or may leave a predetermined gap between the first turbulent flow sections 316 and the second-side partition section 326. The first turbulent flow sections 316 can sufficiently turbulently flow the second sub-channel 3412 and the third sub-channel 3413 to uniform the temperature of the heat exchange fluid in the first heat exchange channel 34, thereby making the temperature adjustment of the battery unit more uniform. A plurality of first turbulence sections 316 are provided in the length direction Y of the second sub-channel 3412 and the third sub-channel 3413, and in some embodiments, the plurality of first turbulence sections 316 may be staggered in the width direction X. The first turbulence sections 316 may be provided in the second side partial channel of the second side plate.

[0156] In some embodiments, the first turbulence section 316 is disposed in a portion of the first side flow path and / or the second side flow path that is not aligned with the battery unit. If the first turbulence section 316 is disposed in a portion aligned with the battery unit, the first turbulence section 316 may occupy the surface area of ​​the first heat exchange surface and / or the second edge heat exchange surface, which may further affect the heat exchange effect. By disposing the first turbulence section 316 in a portion not aligned with the battery unit, the first turbulence section 316 can form turbulence on the downstream first heat exchange surface 310 and / or the second edge heat exchange surface 320 without affecting the first heat exchange area S1 and the second heat exchange area S2, thereby improving the heat exchange effect. Specifically, as shown in FIG. 10, the first turbulence section 316 is disposed in a portion of the arc-shaped outer wall of the first side panel 31 that protrudes away from the thermal management member 300 and is not aligned with the battery unit, and therefore does not affect the first heat exchange area S1 and the second heat exchange area S2.

[0157] 20-29 show a battery structure provided by the second aspect of the present invention, in which the edge thermal management members 400 and 500 in the embodiment shown in Fig. 20-29 have the same structure as the thermal management member 300 provided by the first aspect of the present invention, and the specific structure thereof is described in the above embodiment.

[0158] The battery according to the embodiment of the present application includes at least three layers of battery units and a temperature regulation system, wherein the at least three layers of battery units include two layers of outer battery units and at least one layer of intermediate battery units located between the two layers of outer battery units, each layer of the outer battery units and each layer of the intermediate battery units each include a plurality of battery units, the temperature regulation system is used for heat exchange with the outer battery units and the intermediate battery units, and includes two sets of first heat exchange surfaces and a plurality of sets of second heat exchange surfaces, each set of the first heat exchange surfaces includes a plurality of first heat exchange surfaces, each set of the second heat exchange surfaces includes a plurality of second heat exchange surfaces, and the first heat exchange surfaces and the second heat exchange surfaces can exchange heat with a heat exchange fluid inside the temperature regulation system, wherein the temperature regulation system is used for heat exchange with the outer battery units of each layer, one side of each outer battery unit cooperates with a set of first heat exchange surfaces to regulate temperature, one side of each outer battery unit cooperates with one of the first heat exchange surfaces in the set of first heat exchange surfaces to regulate temperature, the at least one first heat exchange surface has a first heat exchange area S1, the intermediate battery units in each layer are disposed between two sets of second heat exchange surfaces, two opposite sides of the intermediate battery units in each layer cooperate with a set of adjacent second heat exchange surfaces to regulate temperature, the two opposite sides of each intermediate battery unit cooperate with a set of adjacent second heat exchange surfaces to regulate temperature, and the first heat exchange area S1 is larger than the heat exchange area of ​​the at least one second heat exchange surface.

[0159] In this embodiment, the temperature regulation system includes two sets of first heat exchange surfaces and multiple sets of second heat exchange surfaces, and exchanges heat with two layers of outer battery units and at least one layer of intermediate battery units, where one side of each layer of outer battery units exchanges heat with one set of first heat exchange surfaces, i.e., each outer battery unit exchanges heat with the temperature regulation system through the first heat exchange area, and the two opposite sides of each layer of intermediate battery units exchange heat with the adjacent set of second heat exchange surfaces, i.e., each intermediate battery unit exchanges heat with the temperature regulation system through the heat exchange areas of the two second heat exchange surfaces. It is possible to realize the construction of a battery with an odd number of battery units and a battery with an even number of battery units, and the number and thickness of the battery layers can be more freely designed, resulting in more desirable spatial adaptability. In addition, since the first heat exchange area is larger than the heat exchange area of ​​the second heat exchange surface, it is possible to freely adjust the cooling effect of the intermediate battery units and the outer battery units. By varying the ratio of the heat exchange area of ​​the first heat exchange surface to the heat exchange area of ​​the second heat exchange surface, the outer battery unit and the middle battery unit can have a close cooling effect, reducing the temperature difference between the battery units, matching the battery conditions, and improving the overall performance of the battery.

[0160] In some embodiments, multiple outer battery units in the same layer can be arranged in parallel along the length direction Y of the thermal management member, and one outer battery unit can be arranged in the width direction X of the thermal management member. Each outer battery unit can include one battery cell or multiple battery cells arranged coaxially. The multiple battery cells belonging to one outer battery unit can be electrically connected or not. The battery units in adjacent rows of the outer battery units in each layer can be connected in series or in parallel by a bus member. The structure of the intermediate battery units in each layer can refer to the structure of the outer battery units in each layer.

[0161] In some embodiments, the ratio of the heat exchange area of ​​the second heat exchange surface to the first heat exchange area S1 is between 0.1-0.9.

[0162] In some embodiments, as shown in Figures 20-24, the battery of this embodiment includes three layers of battery units and a temperature regulation system 1000. As shown in Figure 20, the three layers of battery units include two layers of outer battery units 13, 15 and one layer of middle battery units 14, the two layers of outer battery units 13, 15 and one layer of middle battery units 14 are parallel, each layer of outer battery units 13, 15 includes multiple outer battery units 13, 15, one layer of middle battery units 14 includes multiple middle battery units 14, and the temperature regulation system 1000 includes two edge thermal management elements 400, 500 installed in parallel. The structure of the edge thermal management elements 400, 500 shown in Figures 20-24 is the same as the structure of the thermal management element 300 in Figures 7-17, so it will not be described again.

[0163] Specifically, a set of first heat exchange surfaces 410 of the above-mentioned temperature adjustment system 1000 is formed on the first side plate 41 of the edge thermal management member 400, and a set of first heat exchange surfaces 510 of the above-mentioned temperature adjustment system 1000 is also formed on the first side plate 51 of the edge thermal management member 500, and the first heat exchange surfaces 410, 510 of the edge thermal management members 400, 500 have the same structure as the first heat exchange surface 310 in Figures 7-11, 16, 17 and have a first heat exchange area S1. The multiple sets of second heat exchange surfaces of the above-mentioned temperature adjustment system 1000 include two sets of second edge heat exchange surfaces 420, 520 formed on the second side plates 42, 52 of the two edge thermal management members 400, 500 respectively, and the second edge heat exchange surfaces 420, 520 have the same structure as the second edge heat exchange surface 320 in Figures 13-17 and have a second heat exchange area S2.

[0164] The two second side plates 42, 52 of the two edge thermal management members 400, 500 are adjacent and the two first side plates 41, 51 are opposite each other, one layer of outer battery units 13, 15 is provided on the first side plates 41, 51 of the two edge thermal management members 400, 500, one side of each outer battery unit 15, 13 is aligned with a corresponding one first heat exchange surface 410, 510, one layer of intermediate battery units 14 is provided between the two edge thermal management members 400, 500, two opposite sides of each intermediate battery unit 14 are aligned with one second edge heat exchange surface 420, 520 of the two edge thermal management members 400, 500, respectively.

[0165] Thus, referring to Figures 21 and 22, Figure 21 shows a local schematic diagram of the temperature regulating affiliated parts of the intermediate battery unit 14 and the two thermal management members 400, 500 shown in a side view along the Y direction, in which the upper surface of the intermediate battery unit 14 exchanges heat with the second edge heat exchange surface 420 of the second side plate 42 of the upper edge heat management member 400, and the heat exchange area is the second heat exchange area S2, and the lower surface of the intermediate battery unit 14 exchanges heat with the second edge heat exchange surface 520 of the second side plate 52 of the lower edge heat management member 500, and the heat exchange area is also the second heat exchange area S2, so that the total heat exchange area of ​​the intermediate battery unit 14 and the two edge heat management members 400, 500 is twice the second heat exchange area 2S2. 19 shows a local schematic diagram of the temperature regulating joint portion of an outer battery unit 13 and one thermal management member 500 in a side view along the Y direction, in which the surface of the outer battery unit 13 exchanges heat with the first heat exchange surface 510 of the first side plate 51 of the upper edge thermal management member 500 by conduction, and the first area which is the total heat exchange area is S1. In the topmost layer of outer battery units, the total heat exchange area between one outer battery unit 15 and the edge thermal management member 400 is the same as the total heat exchange area of ​​the outer battery units 13, which is also S1.

[0166] According to an embodiment of the first aspect, the ratio of the second heat exchange area S2 to the first heat exchange area S1 is between 0.1-0.9. S2 / S1 may be 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85. Thus, in the battery of this embodiment, the total heat exchange area ratio 2S2 / S1 of the middle battery unit and the outer battery unit may be between 0.2-1.8. In some embodiments, 2S2 / S1 may be 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, etc., but is not limited to these specific values. The total heat exchange area ratio 2S2 / S1 of the middle battery unit 14 and the outer battery units 13, 15 can be selected in a suitable range according to actual requirements. For example, when the middle battery unit 14 and the outer battery units 13, 15 adopt batteries of the same specification, 2S2 / S1 can be between 0.3-1.2, for example, between 0.4-1.0, between 0.3-0.6, or between 0.6-0.8, so that the middle battery unit 14 and the outer battery units 13, 15 can have basically the same cooling effect, and the temperature and performance of the middle battery unit 14 and the outer battery units 13, 15 can be consistent, making the battery performance more stable, with excellent reliability and longer life. Furthermore, when a stronger cooling effect is required for the intermediate battery unit 14, for example when the heat dissipation effect of the intermediate battery unit 14 is low or the specifications of the intermediate battery unit 14 and the outer battery units 13, 15 are not the same, 2S2 / S1 may be between 1.2-1.8, such as 1.3-1.6 or 1.4-1.5, so that the intermediate battery has stronger temperature regulating performance, and the temperature and performance of the intermediate battery unit 14 and the outer battery units 13, 15 are matched, making the battery performance more stable, reliable and last longer. Therefore, the battery of this embodiment can realize the free adjustment of the cooling effect of the intermediate battery unit 14 and the outer battery units 13, 15 by adjusting the ratio of 2S2 / S1, which can be adapted to different types of batteries and meet the different temperature regulating performance requirements of batteries at different locations.In addition, a combination of an odd number of layers of batteries can be realized, and the two side plates of each thermal management component are both used to adjust the temperature of the battery unit. The number of thermal management components is one layer less than the number of layers of the battery unit, the overall thickness of the battery is reduced, and more desirable spatial adaptability is achieved.

[0167] In some embodiments, as shown in Figures 23 and 24, the two edge thermal management elements 400, 500 are in communication with the heat exchange fluid. Specifically, the edge thermal management element 400 is provided with a first fluid inlet 46 and a first fluid outlet 47. The first fluid inlet 46 and the first fluid outlet 47 are the same as the structures of the fluid inlet 36 and the fluid outlet 37 in Figure 10, and based on this, the edge thermal management element 400 is further provided with a second fluid outlet 48 and a second fluid inlet 49, in which the second fluid outlet 48 is in communication with the first fluid inlet 46, and the second fluid inlet 49 is in communication with the first fluid outlet 47. The lower edge thermal management element 500 is provided with a third fluid inlet 56 and a third fluid outlet 57, and then the third fluid inlet 56 is in communication with the second fluid outlet 48, and the third fluid outlet 57 is in communication with the second fluid inlet 49, further communicating the heat exchange fluid of the two edge thermal management elements 400, 500. In this way, the two thermal management elements 400, 500 are connected to the same thermal management system, which simplifies the piping, reduces costs, and makes the battery structure more compact. However, the heat exchange fluid communication method of the two edge thermal management elements 400, 500 is not limited to the method shown in Figures 23 and 24, and may be connected in series or in parallel, and is not limited by the present application.

[0168] In some embodiments, the battery units are four or more layers, including two layers of outer battery units 13, 15 and at least two layers of middle battery units, as shown in Fig. 25. The temperature adjustment system 2000 includes two edge thermal management members 400, 500 and at least one middle thermal management member 600 arranged in parallel, where the at least one middle thermal management member 600 is arranged between the two edge thermal management members 400, 500 so as to be parallel to each of the edge thermal management members 400, 500, and the two second side plates 42, 52 of the two edge thermal management members 400, 500 are adjacent to one third side plate 61, 62 of one middle thermal management member 600, respectively, and the two first side plates 41, 51 are opposite to each other.

[0169] Each of the first side plates 41, 51 of the two edge thermal management members 400, 500 is provided with one layer of outer battery units 13, 15 aligned with the first heat exchange surfaces 410, 510 of the corresponding first side plates 41, 51, and the specific alignment manner is the same as that of Figures 20 and 22, and will not be described repeatedly here.

[0170] A layer of intermediate battery units is provided between each edge thermal management member 400, 500 and an adjacent one of the intermediate thermal management members 600, and in the layer of intermediate battery units aligned with the edge thermal management members 400, 500, two sides of each intermediate battery unit are aligned with the second edge heat exchange surface 420, 520 of the second side surface 42, 52 of the edge thermal management member 400, 500, respectively, and the second intermediate heat exchange surface 610 of the third side plate 61 of the one of the intermediate thermal management members 600; and / or A further layer of intermediate battery units 17 is provided between every two adjacent intermediate thermal management members 600, and in each layer of intermediate battery units 17, both sides of which are aligned with intermediate thermal management members 600, the two sides of each intermediate battery unit 17 are aligned with the second intermediate heat exchange surfaces 610 of the opposing third side plates 61, 62 of the two intermediate thermal management members 600, respectively.

[0171] Compared with the embodiment in Fig. 20, the embodiment in Fig. 25 differs by adding at least one intermediate thermal management member 600 and at least one layer of intermediate battery units. The number of intermediate thermal management members 600 is the number of layers of battery units minus three.

[0172] The structure of a battery including the intermediate heat management member 600 will be specifically described below.

[0173] In some embodiments, as shown in FIG. 25 , the battery comprises four layers of battery units including two outer battery units 13, 15 and two middle battery units 14, 16, and the temperature regulation system 2000 includes two edge thermal management members 400, 500 and one middle thermal management member 600. 20 and 22, and will not be described again here.

[0174] In another aspect, as shown in FIG. 25 , a layer of intermediate battery units 14, 16 is provided between each edge thermal management member 400, 500 and an adjacent intermediate thermal management member 600, and in the layer of intermediate battery units 14, 16 aligned with the edge thermal management members 400, 600, one side of each intermediate battery unit 14, 16 is aligned with the second edge heat exchange surface 420, 520 of the second side surface 42, 52 of the edge thermal management member 400, 500, respectively, and another side of each intermediate battery unit 14, 16 is aligned with the second intermediate heat exchange surface 610 of the third side panel 61 of one intermediate thermal management member 600, respectively.

[0175] 26, taking the intermediate battery unit 16 as an example, the upper side of the intermediate battery unit 16 exchanges heat with the second edge heat exchange surface 420 of the second side plate 42 of the upper edge heat management member 400, and the heat exchange area is the second heat exchange area S2, and the upper side of the intermediate battery unit 14 exchanges heat with the second intermediate heat exchange surface 610 of the third side plate 61 of the upper intermediate heat management member 600, and the heat exchange area is the third heat exchange area S3, so that the total heat exchange area of ​​the intermediate battery unit 16, one edge heat management member 400, and one intermediate heat management member 600 is the sum S2+S3 of the second heat exchange area S2 and the third heat exchange area S3. The heat exchange area of ​​the outer battery units 13 and 15 and the edge heat management member is S1. For the intermediate battery unit 14, refer to the intermediate battery unit 16.

[0176] The ratio of the second heat exchange area S2 to the first heat exchange area S1 is between 0.1-0.9, and the ratio of the third heat exchange area S3 to the first heat exchange area S1 is between 0.1-0.9. Therefore, in the battery of this embodiment, the total heat exchange area ratio of the middle battery unit 14, 16 and the outer battery unit 13, 15, i.e., the ratio (S2+S3) / S1 of the sum of the first heat exchange area S2 and the second heat exchange area S3 to the first heat exchange area S1, may be between 0.2-1.8. In some embodiments, (S2+S3) / S1 may be 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, etc., but is not limited to these specific values. The total heat exchange area ratio (S2+S3) / S1 of the middle battery units 14, 16 and the outer battery units 13, 15 can be selected in a suitable range according to actual requirements. For example, when the middle battery unit 14 and the outer battery units 13, 15 are made of batteries of the same specification, (S2+S3) / S1 can be between 0.3-1.2, for example, between 0.4-1.0, between 0.3-0.6, or between 0.6-0.8, so that the middle battery units 14, 16 and the outer battery units 13, 15 have basically the same cooling effect, and the temperature and performance of the middle battery units 14, 16 and the outer battery units 13, 15 can be consistent, resulting in more stable battery performance, better reliability, and longer life. Furthermore, when a stronger cooling effect is required for the intermediate battery units 14, 16, for example when the heat dissipation effect of the intermediate battery units 14, 16 is low or the specifications of the intermediate battery units 14, 16 and the outer battery units 13, 15 are different, (S2+S3) / S1 may be between 1.2-1.8, for example between 1.3-1.6 or 1.4-1.5, in which case the intermediate battery has stronger temperature regulating performance, and the temperature and performance of the intermediate battery unit 14 and the outer battery units 13, 15 are more consistent, making the battery performance more stable, with better reliability and longer life.

[0177] Therefore, according to the battery of this embodiment, by adjusting the ratio of (S2+S3) / S1, the cooling effect of the middle battery units 14, 16 and the outer battery units 13, 15 can be freely adjusted, which can accommodate different types of batteries and meet the different temperature regulation performance requirements of different parts of the battery. In addition, by using the intermediate thermal management member, the battery can achieve temperature regulation of odd or even number of battery units of four or more layers, making the battery modularization method more flexible, and the two side plates of each thermal management member are both used for temperature regulation of the battery units, so that the number of thermal management members is one less than the number of layers of the battery unit, the total thickness of the battery is reduced, and more preferable spatial adaptability is achieved. In addition, the second heat exchange area S2 and the third heat exchange area S3 may be the same or different. In this way, by combining different edge heat management components and middle management components and adjusting the sizes and proportional relationships of the first heat exchange area S1, the second heat exchange area S2, and the third heat exchange area S3, various types of battery unit combination modes can be met. In addition, according to the different temperature regulating performance requirements of the battery cooling units of each layer and the temperature difference at each point of the heat exchange fluid in the heat management components, differentiated design and more precise temperature regulation control can be carried out to match the temperature and performance of the middle battery unit 14 and the outer battery units 13, 15, and make the battery performance more stable, with excellent reliability and longer life.

[0178] In some embodiments, the two edge thermal management elements 400, 500 and the intermediate thermal management element 600 are in heat exchange fluid communication, and the heat exchange fluid communication manner may be serial connection or parallel connection, and the embodiments of the present application are not limited thereto. Of course, the two edge thermal management elements 400, 500 and the intermediate thermal management element may not be in communication with each other and may operate independently.

[0179] Specifically, Fig. 27 shows the structure of an intermediate thermal management member 600 according to an embodiment of the present invention. The third side plates 61, 62 on both sides of the intermediate thermal management member have a structure similar to the second side plate 32 of the thermal management member 300 in Fig. 13. The two third side plates 61, 62 are installed symmetrically with respect to the midline of the intermediate thermal management member 600 in the thickness Z direction.

[0180] A second heat exchange flow path 64 for allowing a heat exchange fluid to flow is formed within the intermediate heat management member 600, and the intermediate heat management member includes a fourth fluid inlet 66 and a fourth fluid outlet 67 that communicate with the second heat exchange flow path 64. One second heat exchange flow path 64 includes a plurality of flow path partial sections that are installed in a bypass manner, and a third partition section 63 is provided between two adjacent flow path partial sections. The second heat exchange flow path 64 further includes a second intermediate flow path partial section 642, and the two adjacent flow path partial sections communicate with each other via the second intermediate flow path partial section 642.

[0181] 27 , in this embodiment, one second heat exchange passage 64 is provided with a third passage partial section 641 communicating with a third fluid inlet 66 and a fourth passage partial section 643 communicating with a third fluid outlet 67, the third passage partial section 641 and the fourth passage partial section 643 extending along the length direction Y of the intermediate heat management member 600, and a third partition section 63 is provided between the third passage partial section 641 and the fourth passage partial section 643 to separate the third passage partial section 641 and the fourth passage partial section 643. The second intermediate passage partial section 642 is located at an edge of the third partition section 633 and extends along the width direction X of the intermediate heat management member, and the adjacent third passage partial section 641 and fourth passage partial section 643 communicate with each other via the second intermediate passage partial section 642. As a whole, the second heat exchange passage 64 forms a detouring structure, and the adjacent third passage partial section 641 and fourth passage partial section 643 are folded 180 degrees, so that the cooling space for cooling the battery unit is relatively compact. The number of sections of one second heat exchange passage 64 is determined according to the battery dimensions that need to be actually cooled and the actual usage environment, and the specific number and specific length of one passage partial section are not limited. Since the heat exchange fluid temperature near the third fluid inlet 66 is relatively low and the heat exchange fluid temperature near the third fluid outlet 67 is relatively high, one third heat exchange surface 610 that exchanges heat with one battery unit includes a low-temperature heat exchange partial surface near the third fluid inlet 66 and a high-temperature heat exchange partial surface near the third fluid outlet 67. This neutralizes the temperature and prevents extreme conditions from occurring in the battery unit temperature. In addition, the battery unit temperature near the third fluid inlet 66 and the third fluid outlet 67 does not differ significantly from the battery unit temperature near the second intermediate flow path partial section 642 (located at the end of the intermediate thermal management member 600), improving the temperature uniformity of the battery unit.

[0182] In some embodiments, a second heat exchange passage 64 is provided on either side of a third fluid inlet 66 and a third fluid outlet 67 . Specifically, the third fluid inlet 66 and the third fluid outlet 67 are disposed at a middle position along the longitudinal direction Y of the intermediate heat management member, and one second heat exchange passage 64 is disposed on each side. The second heat exchange passages 64 on both sides are connected to the third fluid inlet 66 and the third fluid outlet 67, so that the third fluid inlet 66 and the third fluid outlet 67 can simultaneously supply fluid to the two second heat exchange passages 64. The third fluid inlet 66 and the third fluid outlet 67 are disposed at a middle position of the intermediate heat management member 600, and one second heat exchange passage 64 is disposed on each side of the connecting line between the third fluid inlet 66 and the third fluid outlet 67. This shortens the flow distance of the heat exchange fluid and increases the parallel connection circuit of the heat exchange fluid to effectively reduce the flow resistance. At the same time, this contributes to improving the temperature consistency of the battery units on both sides of the connecting line between the third fluid inlet 66 and the third fluid outlet 67 of the intermediate heat management member 600.

[0183] 27 and 28, in each of the two third side plates 61 and 62 of the intermediate heat management member 600, a third side flow passage partial section is formed at a position corresponding to the third flow passage partial section 641, and a plurality of second intermediate heat exchange surface 1 partial sections 611 arranged along the length Y direction are formed at a portion of the third side flow passage partial section 614 aligned with one intermediate cell unit. Each third side flow passage partial section includes a plurality of third side partial channels, and in some embodiments, one third side partial flow passage partial section includes six third side partial channels such as a third side 1 partial channel 6141, a third side 2 partial channel 6142, a third side 3 partial channel 6143, a third side 4 partial channel 6144, a third side 5 partial channel 6145, and a third side 6 partial channel 6146, and the six third side partial channels are partitioned via a number of third side partitions 625 and 626. Six third side partial flow paths protrude from the third side plate 61, and a third heat exchange partial surface is formed at a portion of each third side partial flow path aligned with one of the intermediate battery units 14, that is, one third heat exchange partial surface is formed at a portion of the arc-shaped outer wall of each third side partial flow path recessed into the middle heat management member 600 aligned with the intermediate battery unit 14. The structure of the fourth flow path partial section 643 can be referred to the structure of the third flow path partial section 641.

[0184] Specifically, as shown in FIG. 29 , one second intermediate heat exchange surface 1 partial section 611 includes a third heat exchange 1 partial surface 6111 located in the third side 1 partial flow path 6141, a third heat exchange 2 partial surface 6112 located in the third side 2 partial flow path 6142, a third heat exchange 3 partial surface 6113 located in the third side 3 partial flow path 6143, a third heat exchange 4 partial surface 6114 located in the third side 4 partial flow path 6144, a third heat exchange 5 partial surface 6115 located in the third side 5 partial flow path 6145, and a third heat exchange 6 partial surface 6116 located in the third side 6 partial flow path 6146. The third heat exchange 1 partial surface 6111, the third heat exchange 2 partial surface 6112, the third heat exchange 3 partial surface 6113, the third heat exchange 4 partial surface 6114, the third heat exchange 5 partial surface 6115, and the third heat exchange 6 partial surface 6116 are located on the same concave arc-shaped outer wall of the third side plate 61, and are arranged along the width X direction. Similarly, in the portion where the third flow path partial section 643 is provided, a third side flow path partial section is also formed at a position corresponding to the third flow path partial section 643 on the third side plate 61 of the intermediate heat management member 600, and a plurality of second intermediate heat exchange surface 2 partial sections 612 arranged along the length Y direction are formed at a portion of the third side flow path partial section aligned with the third cell unit 14. Each of them is arranged in parallel with one second intermediate heat exchange surface 1 partial section 611 in the width X direction. Each second intermediate heat exchange surface 2 partial section 612 also includes six third heat exchange partial surfaces arranged along the width X direction. The structure of the second intermediate heat exchange surface 2 subsection 612 can refer to the structure of the second intermediate heat exchange surface 1 subsection 611, and the structure of the second intermediate heat exchange surface 2 subsection 612 may be the same as the structure of the second intermediate heat exchange surface 1 subsection 611 or may be mirror-symmetric with respect to the third partition portion 63.

[0185] Specifically, as shown in FIG. 27, one second intermediate heat exchange surface 1 partial section 611 and one second intermediate heat exchange surface 2 partial section 612 arranged in parallel constitute one second intermediate heat exchange surface 610. One second intermediate heat exchange surface 610 is constituted by 12 third heat exchange partial surfaces. However, without being limited thereto, when the second intermediate heat exchange surface 1 partial section 611 or smaller third heat exchange partial surfaces 6111-6116 are used to adjust the temperature of one battery unit, the second intermediate heat exchange surface may be the second intermediate heat exchange surface 1 partial section 611 or smaller third heat exchange partial surfaces. The number of partial sections and the number of partial surfaces of the second intermediate heat exchange surface 610 depend on the number of flow path partial sections and the number of third side flow path partial sections in each flow path partial section, and may be determined according to the battery size that actually needs to be cooled and the actual usage environment, and are not specifically limited. A second intermediate heat exchange surface 610 is associated with an intermediate battery unit 14 to regulate temperature, and the intermediate battery unit 14 may include one battery cell or multiple battery cells.

[0186] Specifically, each second intermediate heat exchanging surface 610 is distributed along the width direction X of the intermediate heat management member 600 , and a set of the second intermediate heat exchanging surfaces 610 are aligned along the length direction Y of the intermediate heat management member 600 .

[0187] Specifically, the third heat exchange area S3 of at least one second intermediate heat exchange surface 610 is the sum of the surface areas of the multiple third heat exchange partial surfaces that regulate temperature in cooperation with one intermediate battery unit 14. Specifically, the third heat exchange area S3 of one second intermediate heat exchange surface 610 is the sum of the surface areas of the six third heat exchange partial surfaces 6111-6116 of one second intermediate heat exchange surface 1 partial section 611 and the six third heat exchange partial surfaces of one second intermediate heat exchange surface 2 partial section 612.

[0188] 29, in one second intermediate heat exchange surface 1 partial section 611, the widths of the third side 1 partial flow passage 6141, the third side 2 partial flow passage 6142, the third side 3 partial flow passage 6143, the third side 4 partial flow passage 6144, the third side 5 partial flow passage 6145, and the third side 6 partial flow passage 6146 are unchanged in the length Y direction. The third heat exchange 1 partial surface 6111 has a first partial width W31, the third heat exchange 2 partial surface 6112 has a third partial width W32, the third heat exchange 3 partial surface 6113 has a third partial width W33, the third heat exchange 4 partial surface 6114 has a fourth partial width W34, the third heat exchange 5 partial surface 6115 has a fifth partial width W35, and the third heat exchange 6 partial surface 6116 has a sixth partial width W36. The first portion width W31, the third portion width W32, the third portion width W33, the fourth portion width W34, the fifth portion width W35, and the sixth portion width W36 may be the same or different, and are not limited. In this way, the width of one second intermediate heat exchange surface 610 is the sum of the widths of the multiple third heat exchange partial surfaces. Specifically, in FIG. 25, the third heat exchange width W3, which is the total width of one second intermediate heat exchange surface 610, is the sum of the widths of the six heat exchange partial surfaces 6111-6116 of one second intermediate heat exchange surface 1 partial section 611 and the six heat exchange partial surfaces of one second intermediate heat exchange surface 2 partial section 612.

[0189] In some embodiments, the width of the side partial flow passage of one second intermediate heat exchange surface section along the length Y direction is not a fixed value but may vary. In this case, the width of one third heat exchange surface is the average width of the third heat exchange surface in the length Y direction, and the third heat exchange width W3, which is the total width of one second intermediate heat exchange surface, is the sum of the average widths of the multiple third heat exchange surfaces.

[0190] In some embodiments, as shown in FIG. 28, the third side passages of the two third side plates 61, 62 are combined to form a second heat exchange passage 64. Specifically, the second heat exchange passage 64 may include multiple sub-passages, and the side passages in each of the third side plates 61, 62 may include multiple side partial passages. Each sub-passage includes at least one partial passage in one third side plate 61 and at least one side partial passage in the other third side plate 62, and the side partial passages constituting one sub-passage are in communication with each other. By installing in this manner, the second heat exchange passage 64 is divided into multiple sub-passages, and the heat exchange fluid in each sub-passage can simultaneously exchange heat with two third side plates, simplifying the design of the second heat exchange passage 64 and facilitating the manufacture of the thermal management member.

[0191] 28 and 29, a third side partition 613 is provided on the third side plate 61, a fourth side partition 623 is provided on the third side plate 62, and the third side partition 613 and the fourth side partition 623 are connected to form a third partition 63, which divides the intermediate heat management member 600 into a third flow path partial section 641 and a fourth flow path partial section 642 that are spaced apart. The third side plate 61 is provided with six third side partial channels, such as a third side 1 partial channel 6141, a third side 2 partial channel 6142, a third side 3 partial channel 6143, a third side 4 partial channel 6144, a third side 5 partial channel 6145, and a third side 6 partial channel 6146. The third side plate 62 is disposed symmetrically to the third side plate 61, and is also provided with six fourth side partial channels 6241-6246. The third-side partial flow passages 6141-6146 and the fourth-side partial flow passages 6241-6246 are mirror-symmetrical along the midline of the thickness Z direction of the intermediate heat management member 600, and two opposing third-side partial flow passages and fourth-side partial flow passages communicate with each other to form six second sub-flow passages 6411-6416. Each of the third side plates 61 and 62 is provided with a number of third-side partitions 625 and 626 that separate the six second sub-flow passages 6411-6416. The fourth flow passage partial section 643 has the same structure as the third flow passage partial section 641. The second heat exchange flow passage 64 includes a plurality of second sub-flow passages arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, and each second sub-flow passage includes at least two third-side partial flow passages, and at least two third-side partial flow passages that constitute one second sub-flow passage communicate with each other.

[0192] According to FIGS. 27 and 29, the third heat exchange width W3, which is the full width of one of the second intermediate heat exchange surfaces 610 of the third side plates 61 and 62, is the sum of the widths of the six heat exchange partial surfaces of one of the six heat exchange partial surfaces of the second intermediate heat exchange surface 1 partial section 611 and one of the second intermediate heat exchange surface 2 partial sections 612 (it may be considered that it is twice the sum of the widths of the six heat exchange partial surfaces 6111 - 6116 of the second intermediate heat exchange surface 1 partial section 611, and the third heat exchange width W3 = 2*(W31 + W32 + W33 + W34 + W35 + W36)). Among them, the third heat exchange width W3 of at least one of the second intermediate heat exchange surfaces 610 of the third side plates 61 and 62 of the intermediate heat management member 600 is smaller than the first heat exchange width W1 of at least one of the first heat exchange surfaces 410 of the edge heat management member 400, that is, W3 < W1. The first heat exchange width of the first heat exchange surface 510 of the edge heat management member 500 is also W1.

[0193] Furthermore, the third heat exchange area S3 of at least one of the second intermediate heat exchange surfaces 610 of the third side plates 61 and 62 of the intermediate heat management member 600 is also smaller than the first heat exchange area S1 of at least one of the first heat exchange surfaces 410 of the edge heat management member 400, that is, S3 < S1. The heat exchange area of the first heat exchange surface 510 of the edge heat management member 500 is also the first heat exchange area S1.

[0194] In some embodiments, the ratio of the third heat exchange width W3 to the first heat exchange width W1 is between 0.1 - 0.9. For example, W3 / W1 can be selected from 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, but is not limited to these specific numerical values. The third heat exchange width W3 and the second heat exchange width W2 may be the same or different, and the combination of W3, W2, and W1 can be selected according to actual requirements.

[0195] In some embodiments, the ratio of the third heat exchange area S3 to the first heat exchange area S1 is between 0.1-0.9. S3 / S1 can be selected from 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, but is not limited to these specific values. The third heat exchange area S3 and the second heat exchange area S2 can be the same or different, and the combination of S3, S2 and S1 can be selected according to actual requirements.

[0196] In some embodiments not shown, the intermediate thermal management member 600 further includes a second turbulent section disposed in the third-side flow passage. In some embodiments, the second turbulent section is disposed in a portion of the third-side flow passage not associated with the intermediate battery unit 14, and is used to generate turbulence in the heat exchange fluid flowing through the third-side flow passage. The location and manner of the second turbulent section can be referred to the above embodiments.

[0197] In some embodiments, as shown in Fig. 30, a temperature regulation system 3000 has two or more intermediate thermal management components 600, and differs from the temperature regulation system 2000 in Fig. 20 in that, in addition to one layer of intermediate battery units 14, 16 between each edge thermal management component 400, 500 and an adjacent intermediate thermal management component 600, one layer of intermediate battery units 17 is also provided between two adjacent intermediate thermal management components 600. The temperature regulation methods of the outer battery units 13, 15 and the intermediate battery units 14, 16 are the same as those in Fig. 28, and will not be described repeatedly. The temperature regulation method of the intermediate battery unit 17 will be described below.

[0198] Taking the intermediate battery unit 17 as a specific example, the upper and lower side surfaces of the intermediate battery unit 17 both exchange heat with the second intermediate heat exchange surfaces 610 of the third side plates 61 of the intermediate heat management members 600 on both sides, and the heat exchange area is the third heat exchange area S3. Therefore, the total heat exchange area of ​​the intermediate battery unit 17 and the two intermediate heat management members 600 is twice the third heat exchange area S3, i.e., 2S3.

[0199] The ratio of the third heat exchange area S3 to the first heat exchange area S1 is between 0.1-0.9. Therefore, in the battery of this embodiment, the total heat exchange area ratio of the middle battery unit 17 and the outer battery units 13, 15, i.e., the ratio 2S3 / S1 of the doubled second heat exchange area S3 to the first heat exchange area S1, may be between 0.2-1.8. In some embodiments, 2S3 / S1 may be 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, etc., but is not limited to these specific values. The total heat exchange area ratio 2S3 / S1 of the middle battery unit 17 and the outer battery units 13, 15 can be selected in a suitable range according to actual requirements. For example, when the middle battery unit 17 and the outer battery units 13, 15 are made of batteries of the same specification, 2S3 / S1 may be between 0.3-1.2, e.g., between 0.4-1.0, between 0.3-0.6, or between 0.6-0.8, so that the middle battery unit 17 and the outer battery units 13, 15 have basically the same cooling effect, and the temperature and performance of the middle battery unit 17 and the outer battery units 13, 15 are consistent, making the battery performance more stable, reliable, and last longer. Furthermore, when a stronger cooling effect is required for the middle battery unit 17, for example, when the heat dissipation effect of the middle battery unit 17 is low or the specifications of the middle battery unit 17 and the outer battery units 13, 15 are different, 2S3 / S1 may be between 1.2-1.8, e.g., between 1.3-1.6 or 1.4-1.5, so that the middle battery 17 has a stronger temperature regulating performance. By adjusting the specific proportions of S1, S2 and S3, the temperature and performance of the middle battery units 14, 16 and the outer battery units 13, 15 can be matched, making the battery performance more stable, with better reliability and longer life.

[0200] Therefore, the battery of this embodiment can realize the free adjustment of the cooling effect of the middle battery units 17, 14, 16 and the outer battery units 13, 15 by adjusting the proportions of S1, S2 and S3, and can further accommodate different types of batteries and meet the different temperature regulation performance requirements of different parts of the battery. In addition, by using the intermediate thermal management members, the battery can realize the temperature regulation of four or more layers of battery units, and the two side plates of each thermal management member are both used to regulate the temperature of the battery units, so that the number of thermal management members is one layer less than the number of layers of the battery units, and the total thickness of the battery is reduced, resulting in more preferable space adaptability. In addition, the second heat exchange area S2 and the third heat exchange area S3 may be the same or different. In this way, by combining different edge heat management components and middle management components and adjusting the sizes and proportional relationships of the first heat exchange area S1, the second heat exchange area S2, and the third heat exchange area S3, various types of battery unit combination modes can be met. In addition, according to the different temperature regulating performance requirements of the battery cooling units of each layer and the temperature difference at each point of the heat exchange fluid in the heat management components, differentiated design and more precise temperature regulation control can be carried out, so as to further match the temperature and performance of the middle battery unit 14 and the outer battery units 13, 15, and make the battery performance more stable, with excellent reliability and longer life.

[0201] In this embodiment, by adjusting the width / area of ​​the partial flow paths and the number of partial flow paths in the third side panels 61, 62, the proportional relationship between the third heat exchange area S3 and the first heat exchange area S1 can be accurately adjusted, and the proportionality between the third heat exchange area S3 and the first heat exchange area S1 can be appropriately adjusted according to actual requirements, and the proportions of (S2+S3) / S1 and 2S3 / S1 can be further adjusted.

[0202] In some embodiments, the two edge thermal management elements 400, 500 and the intermediate thermal management element 600 are in heat exchange fluid communication, and the heat exchange fluid communication manner may be serial connection or parallel connection, and is not limited in the present application. Of course, the two edge thermal management elements 400, 500 and the intermediate thermal management element may not be in communication with each other and may operate independently.

[0203] 32, the battery units 130, 140, 150 are prismatic batteries with a quadrilateral cross section, and the thermal management members 81, 82 are formed in a flat plate shape to accommodate the shape of the battery units 130, 140, 150. The cross-sectional structure of the thermal management members 81, 82 is the same as the cross-sectional structure of the edge thermal management members 400, 500 in FIG.

[0204] 33, the battery units 131, 141, 151 are prismatic batteries with a hexagonal cross section, and the thermal management members 91, 92 are triangularly corrugated to accommodate the shape of the battery units 131, 141, 151. The cross-sectional structure of the thermal management members 91, 92 is the same as the cross-sectional structure of the edge thermal management members 400, 500 in FIG.

[0205] In the embodiments shown in Figures 32 and 33, the thermal management member is formed flat or corrugated along its length to accommodate the shape of the battery unit, providing a good fit for the battery unit and achieving high heat exchange efficiency to achieve a more desirable heat exchange effect.

[0206] According to a third aspect of the embodiment of the present invention, there is further provided an electric utilization device including the battery according to the above embodiment for providing electric energy. The battery according to the embodiment of the present application is applied to various electric utilization devices using a battery, such as mobile phones, portable devices, notebook computers, electric motorcycles, electric cars, steamships, spacecraft, electric toys, and electric tools, for example, where the spacecraft includes airplanes, rockets, space shuttles, and spaceships, for example, the electric toys include fixed or portable electric toys, such as game consoles, electric car toys, electric steamship toys, and electric airplane toys, and the electric tools include metal cutting electric tools, polishing electric tools, assembly electric tools, and railway electric tools, for example, electric drills, electric grinders, electric spanners, electric drivers, electric hammers, electric impact drills, concrete vibrators, and electric planers.

[0207] For example, FIG. 34 shows a structural schematic diagram of an electric utilization device according to another embodiment of the present application, and the electric utilization device may be an automobile, and the automobile may be a fuel oil automobile, a natural gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid car, or a range-extending automobile, etc. The automobile includes a battery 2101, a controller 2102, and a motor 2103. The battery 2101 is for supplying power to the controller 2102 and the motor 2103 as the operation power source and driving power source of the automobile, for example, the battery 2101 is used for electric utilization needs for starting, navigation, and operation during driving of the automobile. For example, the battery 2101 supplies power to the controller 2102, and the controller 2102 controls the battery 2101 to supply power to the motor 2103, and the motor 2103 receives the power of the battery 2101 as the driving power source of the automobile, and provides driving power to the automobile instead of or partially replacing fuel oil or natural gas.

[0208] Finally, it should be explained that the above embodiments are only for explaining the technical means of the present application, and the present application is not limited thereto. Although the present application has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art that the technical means described in each of the above embodiments can still be modified or some of the technical features therein can be replaced with equivalents, but these modifications or replacements do not cause the essence of the corresponding technical means to deviate from the spirit and scope of the technical means of each embodiment of the present application.

Claims

1. In the thermal management component, a set of first heat exchange surfaces including a plurality of first heat exchange surfaces for regulating temperature in association with a plurality of outer battery units located on one side of the thermal management member, each of the first heat exchange surfaces being for regulating temperature in association with one of the outer battery units; a set of second edge heat exchange surfaces including a plurality of second edge heat exchange surfaces for regulating temperature in association with a plurality of intermediate battery units located on the other side of the thermal management member, each of the second edge heat exchange surfaces for regulating temperature in association with one of the intermediate battery units; a heat exchange area of ​​each of the first heat exchange surfaces is a first heat exchange area S1, a heat exchange area of ​​each of the second edge heat exchange surfaces is a second heat exchange area S2, and the first heat exchange area S1 is greater than the second heat exchange area S2; In the thermal management component, a first heat exchange passage for providing a path for a heat exchange fluid to travel within the heat management member, the heat management member including a first side plate and a second side plate disposed opposite each other and having the first heat exchange passage formed therebetween; The first heat exchange surface is formed on the first side plate, and the heat exchange fluid regulates the temperature of the outer battery unit through the first heat exchange surface; a pair of second edge heat exchange surfaces are formed on the second side plate, and the heat exchange fluid further provides temperature regulation to the intermediate battery unit through the second edge heat exchange surfaces.

2. a first side passage having a plurality of first heat exchange surfaces formed in a portion of the first side plate adjacent to the plurality of outer battery units; a second side passage having a plurality of second edge heat exchange surfaces formed in a portion of the second side plate adjacent to the plurality of intermediate battery units; 2. The thermal management element of claim 1, wherein the first side flow passage and the second side flow passage cooperate to form the first heat exchange flow passage.

3. 3. The thermal management member of claim 2, wherein there is one first side flow passage, one first heat exchange surface is formed at a portion aligned with one of the outer battery units, the first heat exchange area S1 is the surface area of ​​the first heat exchange surface, the second side flow passage includes a plurality of second side partial flow passages arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed at a portion aligned with one of the intermediate battery units in each second side partial flow passage, each of the second edge heat exchange surfaces includes a plurality of the second edge heat exchange partial surfaces, and the second heat exchange area S2 is the sum of the surface areas of the plurality of the second edge heat exchange partial surfaces.

4. The thermal management member according to claim 3 , wherein the first side flow passage and the plurality of second side partial flow passages communicate with each other to form the first heat exchange flow passage.

5. 5. The thermal management member of claim 3 or 4, characterized in that each of the first heat exchange surfaces has a first heat exchange width W1 and each of the second edge heat exchange surfaces has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is the width of the first heat exchange surface, the second heat exchange width W2 is the sum of the widths of the plurality of second edge heat exchange partial surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.

9.

6. 3. The thermal management member of claim 2, wherein the first side flow path includes a plurality of first side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a first heat exchange partial surface is formed in a portion of each first side partial flow path that faces one of the outer battery units, each of the first heat exchange surfaces includes a plurality of first heat exchange partial surfaces, and the first heat exchange area S1 is a sum of the surface areas of the plurality of first heat exchange partial surfaces; the second side flow path includes a plurality of second side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, and a second edge heat exchange partial surface is formed in a portion of each second side partial flow path that faces one of the intermediate battery units, each of the second edge heat exchange surfaces includes a plurality of second edge heat exchange partial surfaces, and the second heat exchange area S2 is a sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

7. 7. The thermal management member of claim 6, wherein the first heat exchange flow path includes a plurality of sub-flow paths arranged in parallel along a direction perpendicular to a flow direction of the heat exchange fluid, each sub-flow path includes at least one of the first side partial flow paths and at least one of the second side partial flow paths, and the first side partial flow paths and the second side partial flow paths constituting one of the sub-flow paths are connected to each other.

8. 8. The thermal management member of claim 6 or 7, characterized in that each of the first heat exchange surfaces has a first heat exchange width W1 and each of the second edge heat exchange surfaces has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is a sum of widths of the plurality of first heat exchange partial surfaces, the second heat exchange width W2 is a sum of widths of the plurality of second edge heat exchange partial surfaces, and a ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.

9.

9. The thermal management member of any one of claims 2 to 8, further comprising a first turbulence portion installed in the first side flow path and / or the second side flow path and used to generate turbulence in the heat exchange fluid flowing through the first side flow path and / or the second side flow path.

10. The thermal management member of claim 9, characterized in that the first turbulence portion is located in a portion of the first side flow path that is not aligned with the outer battery unit, and / or the first turbulence portion is located in a portion of the second side flow path that is not aligned with the intermediate battery unit.

11. The thermal management element according to any one of claims 1 to 10, characterized in that the ratio between the second heat exchange area S2 and the first heat exchange area S1 is between 0.1-0.

9.

12. In the thermal management component, each of the first heat exchange surfaces is disposed along a width of the thermal management member, the set of first heat exchange surfaces is aligned along a length of the thermal management member; and A thermal management member as described in any one of claims 1-10, characterized in that each of the second edge heat exchange surfaces is arranged along the width of the thermal management member, and the set of second edge heat exchange surfaces is aligned along the length of the thermal management member.

13. At least three layers of battery units, including two layers of outer battery units and at least one layer of intermediate battery units located between the two layers of outer battery units, each of the outer battery units and each of the intermediate battery units including a plurality of battery units; a temperature control system for exchanging heat with the outer battery unit and the middle battery unit, the temperature control system including two sets of first heat exchange surfaces and a plurality of sets of second heat exchange surfaces, each set of first heat exchange surfaces including a plurality of the first heat exchange surfaces, each set of second heat exchange surfaces including a plurality of the second heat exchange surfaces, the first heat exchange surfaces and the second heat exchange surfaces being capable of exchanging heat with a heat exchange fluid inside the temperature control system; The temperature regulation system comprises: A pair of sides of the outer battery units of each layer are associated with a pair of first heat exchange surfaces to regulate temperature, and one side of each outer battery unit is associated with one of the first heat exchange surfaces to regulate temperature, and each of the first heat exchange surfaces has a first heat exchange area S1; The intermediate battery units of each layer are disposed between two sets of second heat exchange surfaces, and two sets of opposite sides of the intermediate battery units of each layer are associated with an adjacent set of second heat exchange surfaces to regulate temperature, and two opposite sides of each intermediate battery unit are associated with an adjacent second heat exchange surface to regulate temperature; 4. A battery, characterized in that said first heat exchange area S1 is arranged to be greater than the heat exchange area of ​​said second heat exchange surface.

14. 14. The battery according to claim 13, wherein the ratio of the heat exchange area of ​​the second heat exchange surface to the first heat exchange area S1 is between 0.1-0.

9.

15. The battery unit is three-layered, including two outer battery units and one middle battery unit; The temperature adjustment system includes two edge thermal management members each having a first heat exchange flow path formed therein for providing a path for a heat exchange fluid to move therethrough, the edge thermal management members including a first side plate and a second side plate disposed opposite each other, and a pair of the first heat exchange surfaces formed on the first side plate; the plurality of sets of second heat exchange surfaces include two sets of second edge heat exchange surfaces, each set of second edge heat exchange surfaces includes a plurality of second edge heat exchange surfaces, a set of the second edge heat exchange surfaces is formed on each of the second side plates of the two edge thermal management members, and each of the second edge heat exchange surfaces has a second heat exchange area S2; the two second side plates of the two edge thermal management members are adjacent and the two first side plates are opposite; A layer of the outer battery units is provided on each of the first side plates of the two edge thermal management members, and one side of each of the outer battery units is aligned with a corresponding one of the first heat exchange surfaces; 15. The battery of claim 13 or 14, characterized in that a layer of the intermediate battery units is provided between the two edge thermal management members, and two opposite sides of each of the intermediate battery units are aligned with the second edge heat exchange surface of one of the two edge thermal management members, respectively.

16. 16. The battery according to claim 15, wherein the ratio of the second heat exchange area S2 to the first heat exchange area S1 is between 0.1-0.

9.

17. The battery unit has four or more layers, including two layers of outer battery units and at least two layers of middle battery units; the temperature control system includes two edge thermal management members each having a first heat exchange passage formed therein for providing a path for a heat exchange fluid to move therethrough, the edge thermal management members including a first side plate and a second side plate disposed opposite each other, and a pair of the first heat exchange surfaces formed on the first side plate; the plurality of sets of second heat exchange surfaces include two sets of second edge heat exchange surfaces, each set of second edge heat exchange surfaces includes a plurality of second edge heat exchange surfaces, a set of the second edge heat exchange surfaces is formed on each of the second side plates of the two edge thermal management members, and each of the second edge heat exchange surfaces has a second heat exchange area S2; The temperature adjustment system further includes at least one intermediate heat management member having a second heat exchange flow path formed therein for providing a path for a heat exchange fluid to move therethrough, the at least one intermediate heat management member including two third side plates located opposite each other, the plurality of sets of second heat exchange surfaces further including a plurality of sets of second intermediate heat exchange surfaces, each of the third side plates is formed with a set of the second intermediate heat exchange surfaces, each set of the second intermediate heat exchange surfaces includes a plurality of the second intermediate heat exchange surfaces, each of the second intermediate heat exchange surfaces has a third heat exchange area S3, and the first heat exchange area S1 is larger than the third heat exchange area S3, the number of the intermediate heat management members is the number of layers of the battery unit minus three; the at least one intermediate thermal management member is disposed between two of the edge thermal management members, the two second side plates of the two edge thermal management members are adjacent to one of the third side plates of one of the intermediate thermal management members, and the two first side plates of the two edge thermal management members are on opposite sides; A layer of the outer battery units is provided on each of the first side plates of the two edge thermal management members, and each of the outer battery units is aligned with one of the first heat exchange surfaces of a corresponding one of the first side plates; a layer of intermediate battery units is provided between each of the edge thermal management members and an adjacent one of the intermediate thermal management members, and in the layer of intermediate battery units aligned with the edge thermal management members, one side of each of the intermediate battery units is aligned with the second edge heat exchange surface of one of the second side plates of the edge thermal management members, and another side of each of the intermediate battery units is aligned with the second intermediate heat exchange surface of one of the third side plates of the one of the intermediate thermal management members; and / or 15. The battery according to claim 13 or 14, characterized in that a further layer of intermediate battery units is provided between every two adjacent intermediate thermal management members, and in each layer of intermediate battery units, both sides of which are aligned with the intermediate thermal management members, two side surfaces of each of the intermediate battery units are aligned with one of the second intermediate heat exchange surfaces of the opposing third side plates of the two intermediate thermal management members.

18. the ratio between the third heat exchange area S3 and the first heat exchange area S1 is between 0.1-0.9; and / or 18. The battery according to claim 17, wherein a ratio of the sum of the second heat exchange area S2 and the third heat exchange area S3 to the first heat exchange area S1 is between 0.2-1.

8.

19. a first side passage having the first heat exchange surfaces formed thereon is formed in a portion of the first side plate of the edge thermal management member that faces the outer battery unit of one layer; a second side passage having the plurality of second edge heat exchange surfaces formed in a portion of the second side plate of the edge thermal management member aligned with the intermediate cell unit of one layer; The battery according to any one of claims 17-18, characterized in that the first side flow path and the second side flow path are combined to form the first heat exchange flow path.

20. 20. The battery of claim 19, wherein the number of first side flow paths is one, the one first heat exchange surface is formed at a portion aligned with one of the outer battery units, the first heat exchange area S1 is the surface area of ​​the first heat exchange surface, the second side flow path includes a plurality of second side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed at a portion aligned with one of the intermediate battery units in each of the second side partial flow paths, the one second edge heat exchange surface includes a plurality of second edge heat exchange partial surfaces aligned with one of the intermediate battery units, and the second heat exchange area S2 is the sum of the surface areas of the plurality of second edge heat exchange partial surfaces.

21. The battery according to claim 20 , wherein the first side flow passage and the plurality of second side partial flow passages are in communication with each other to form the first heat exchange flow passage.

22. The battery of claim 20 or 21, characterized in that each of the first heat exchange surfaces has a first heat exchange width W1, each of the second edge heat exchange surfaces has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is the width of a portion of the first side flow path aligned with one of the outer battery units, the second heat exchange width W2 is the sum of the widths of the multiple second edge heat exchange partial surfaces, and the ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.

9.

23. 20. The battery of claim 19, wherein the first side flow path includes a plurality of first side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a first heat exchange partial surface is formed in a portion of each first side partial flow path aligned with one of the outer battery units, each of the first heat exchange surfaces includes a plurality of first heat exchange partial surfaces aligned with one of the outer battery units, the first heat exchange area S1 is a sum of surface areas of the plurality of first heat exchange partial surfaces, the second side flow path includes a plurality of second side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, a second edge heat exchange partial surface is formed in a portion of each second side partial flow path aligned with one of the intermediate battery units, each of the second edge heat exchange surfaces includes a plurality of second edge heat exchange partial surfaces aligned with one of the intermediate battery units, and the second heat exchange area S2 is a sum of surface areas of the plurality of second edge heat exchange partial surfaces.

24. 24. The battery of claim 23, wherein each of the first heat exchange surfaces has a first heat exchange width W1 and each of the second edge heat exchange surfaces has a second heat exchange width W2, the first heat exchange width W1 is greater than the second heat exchange width W2, the first heat exchange width W1 is a sum of widths of the plurality of first heat exchange partial surfaces, the second heat exchange width W2 is a sum of widths of the plurality of second edge heat exchange partial surfaces, and a ratio of the second heat exchange width W2 to the first heat exchange width W1 is between 0.1-0.

9.

25. 25. The battery according to claim 23, wherein the first heat exchange flow path includes a plurality of first sub-flow paths arranged in parallel along a direction perpendicular to a flow direction of the heat exchange fluid, each of the first sub-flow paths includes at least one of the first side partial flow paths and at least one of the second side partial flow paths, and the first side partial flow paths and the second side partial flow paths constituting one of the first sub-flow paths are in communication with each other.

26. The battery of any one of claims 19 to 25, characterized in that the edge thermal management member further includes a first turbulence portion installed in the first side flow path and / or the second side flow path and used to generate turbulence in the heat exchange fluid flowing through the first side flow path and / or the second side flow path.

27. 27. The battery of claim 26, wherein the first turbulence portion is located in a portion of the first side flow path that is not aligned with the outer battery unit, and / or the first turbulence portion is located in a portion of the second side flow path that is not aligned with the intermediate battery unit.

28. the first heat exchange surfaces are distributed along a width of the edge thermal management member, and each set of the first heat exchange surfaces is aligned along a length of the edge thermal management member; and The battery of any one of claims 17-27, characterized in that each of the second edge heat exchange surfaces is distributed along the width of the edge thermal management member, and a set of the second edge heat exchange surfaces is aligned along the length of the edge thermal management member.

29. a third side flow passage is formed in each of the third side plates of the intermediate heat management member, the third side flow passage having a set of the second intermediate heat exchange surfaces formed in a portion aligned with the intermediate battery unit of each layer; The battery of any one of claims 17-28, characterized in that the third side flow passages of two opposing third side plates are combined to form the second heat exchange flow passage.

30. 30. The battery of claim 29, wherein the third side flow path includes a plurality of third side partial flow paths arranged in parallel along a direction perpendicular to the flow direction of the heat exchange fluid, one second intermediate heat exchange partial surface is formed in a portion of each third side partial flow path associated with one of the intermediate battery units, each of the second intermediate heat exchange surfaces includes a plurality of second intermediate heat exchange partial surfaces associated with one of the intermediate battery units, and the third heat exchange area S3 is a sum of surface areas of the plurality of second intermediate heat exchange partial surfaces.

31. 31. The battery of claim 29 or 30, wherein the intermediate thermal management member further includes a second turbulence portion disposed in the third side flow path and used to generate turbulence in the heat exchange fluid flowing through the third side flow path.

32. The battery according to claim 31 , wherein the second turbulent flow section is disposed in a portion of the third flow passage that is not aligned with the intermediate battery unit.

33. 33. The battery of claim 18, wherein each of the second intermediate heat exchange surfaces is distributed along a width of the intermediate thermal management member, and each set of the second intermediate heat exchange surfaces is aligned along a length of the intermediate thermal management member.

34. An electrical utilization device, comprising a battery according to any one of claims 13 to 33.

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