Battery separator, battery separator assembly, battery device, air-cooled battery pack and electric equipment

Abstract

The utility model provides a battery separator, a battery separator assembly, a battery device, an air-cooled battery pack and electric equipment. The battery separator comprises a plate body and at least two air duct ribs. The at least two air duct ribs are arranged on the surface of the plate body in a protruding mode in the thickness direction of the plate body. An air channel groove is defined by every two adjacent air channel ribs and the plate body. Along the extension direction of the air duct grooves, at least part of the air duct grooves have different sectional areas on a plane perpendicular to the extension direction of the air duct grooves. According to the utility model, the surface area of the air duct enclosed between the battery separator and the battery cell can be increased, so that the contact area between the battery separator and airflow is increased, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of batteries, and more specifically to a battery separator, a battery separator assembly, a battery device, an air-cooled battery pack and electrical equipment. Background Art

[0002] The properties of power battery packs are deeply affected by temperature factors, and the discharge efficiency changes with temperature. Under high temperature conditions, if there is no reasonable heat dissipation structure, the temperature of each part of the battery pack will vary greatly, affecting the temperature consistency of the battery cells and causing a series of subsequent problems, among which the most serious is thermal runaway caused by overcharging of the battery, which in turn leads to fire and explosion.

[0003] The air-cooled battery pack is a type of power battery pack. In the related art, the air-cooled battery pack generally includes a battery device and a fan. The interior of the air-cooled battery pack is usually provided with a main air inlet, a branch air duct and a main air outlet. The main air inlet is connected to the main air outlet through a branch air duct. The battery cells in the battery device are arranged in sequence along the arrangement direction. A branch air duct is set between two adjacent battery cells. The fan provides wind pressure, blows in low-temperature air from the air inlet of the main air inlet, or sucks out the internal high-temperature air from the air outlet of the main air outlet, thereby achieving cooling of the air-cooled battery pack. The cross-sectional area of ​​the branch air duct remains unchanged along the flow direction of the gas. However, due to the different distances between each battery cell and the air inlet and outlet, the air intake volume of each branch air duct is different, which in turn makes the temperature difference of each part of the battery device large and the heat dissipation effect is poor. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the present invention provides a battery separator, the battery separator comprising:

[0006] a plate body; and

[0007] At least two air duct ribs, at least two of which are protrudingly arranged on the surface of the plate body along the thickness direction of the plate body, and two adjacent air duct ribs and the plate body are surrounded to form an air duct groove,

[0008] Along the extension direction of the air duct groove, at least part of the air duct groove has different cross-sectional areas on a plane perpendicular to the extension direction of the air duct groove.

[0009] According to the battery separator of the first aspect of the utility model, by setting at least part of the air duct groove to have different cross-sectional areas on the plane perpendicular to the extension direction of the air duct groove, the surface area of ​​the air duct groove can be increased, thereby increasing the contact area between the battery separator and the airflow, which in turn helps to improve the heat dissipation effect.

[0010] Optionally, the air duct ribs are arranged at intervals along the height direction of the plate body.

[0011] Optionally, the cross-sectional area of ​​the end of the air duct groove along its own extension direction on a plane perpendicular to the extension direction of the air duct groove is larger than the cross-sectional area of ​​the middle of the air duct groove along its own extension direction on a plane perpendicular to the extension direction of the air duct groove.

[0012] Optionally, the cross-sectional area of ​​the air duct groove on a plane perpendicular to the extending direction of the air duct groove increases from the middle to both ends in the extending direction of the air duct groove.

[0013] Optionally, the air duct groove has an air inlet end and an air outlet end spaced apart along the length direction of the plate body, and the air inlet end of the air duct groove is suitable for connecting to the main air inlet duct of the air-cooled battery pack.

[0014] In the length direction of the plate body, the cross-sectional area of ​​the air duct groove on a plane perpendicular to the extending direction of the air duct groove decreases from the air inlet end to the air outlet end.

[0015] Optionally, in the same plane perpendicular to the length direction of the plate body, the cross-sectional areas of the air duct grooves located on the same side of the plate body along its own thickness direction are the same.

[0016] Optionally, the battery separator further includes a separator positioning portion, and the separator positioning portions of adjacent battery separators are connected to each other to position the adjacent battery separators.

[0017] Optionally, the battery separator includes at least two separator positioning parts, each of which is arranged at intervals along the length direction of the plate body, adjacent battery separators are connected to each other through the separator positioning parts, and adjacent battery separators are limitedly matched with each other in the length direction of the plate body through the separator positioning parts; and / or

[0018] The battery partition includes at least two partition positioning parts, each of which is arranged at intervals along the height direction of the plate body, adjacent battery partitions are connected to each other through the partition positioning parts, and adjacent battery partitions are limited and matched with each other in the height direction of the plate body through the partition positioning parts.

[0019] Optionally, the battery separator further comprises:

[0020] At least one group of first battery cell positioning portions, each group of the first battery cell positioning portions includes two first battery cell positioning portions, the two first battery cell positioning portions are spaced apart along the length direction of the board body, and the two first battery cell positioning portions of the same group are suitable for accommodating a single battery cell to limit the single battery cell in the length direction of the board body.

[0021] Optionally, the battery separator includes two groups of first battery cell positioning portions, and the two groups of first battery cell positioning portions are arranged side by side along the length direction of the plate body.

[0022] Optionally, the battery separator further comprises:

[0023] At least one group of second battery cell positioning portions, each group of second battery cell positioning portions includes two second battery cell positioning portions, the two second battery cell positioning portions are spaced apart along the height direction of the board body, and the two second battery cell positioning portions of the same group are suitable for accommodating a single battery cell to limit the single battery cell in the height direction of the board body.

[0024] Optionally, the battery separator includes two groups of second battery cell positioning portions, and the two groups of second battery cell positioning portions are arranged side by side along the length direction of the plate body.

[0025] Optionally, the second battery cell positioning portion is located on the upper portion of the battery separator.

[0026] The battery separator also includes a third battery cell positioning portion, which is located at the lower part of the battery separator, and is arranged opposite to the second battery cell positioning portion in the height direction of the plate body, and is used to support the battery cell.

[0027] Optionally, the top of the battery separator along the height direction of the plate body includes a cable accommodating portion, the cable accommodating portion is extended along the thickness direction of the plate body, and the cable accommodating portion is suitable for accommodating cables or wire harnesses.

[0028] The second aspect of the utility model provides a battery separator assembly, the battery separator assembly comprises a plurality of the above-mentioned battery separators, the plurality of the battery separators are divided into a first battery separator and a second battery separator, the first battery separator and the second battery separator are alternately arranged in the thickness direction of the battery separator,

[0029] The first battery separator includes a first plate body and a third separator positioning portion, wherein the third separator positioning portion is connected to an end portion of the first plate body along its own height direction, and the third separator positioning portion is located in the middle portion of the first plate body along its own length direction;

[0030] The second battery separator includes a second plate body and a fourth separator positioning portion, wherein the fourth separator positioning portion is connected to an end portion of the second plate body along its own height direction, and the fourth separator positioning portion is located in the middle portion of the second plate body along its own length direction,

[0031] The fourth separator positioning portion is adapted to be connected to the third separator positioning portion so as to limit the adjacent first battery separator and the second battery separator in the length direction of the battery separator and the thickness direction of the battery separator.

[0032] According to the battery separator assembly of the second aspect of the utility model, by dividing a plurality of battery separators into two types of battery separators, namely a first battery separator having a third separator positioning portion and a second battery separator having a fourth separator positioning portion, when the plurality of battery separators are stacked along the thickness direction of the battery separators, it is convenient to achieve the limitation of two adjacent battery separators in the length direction and the thickness direction of the battery separators through the cooperation between the fourth separator positioning portion and the third separator positioning portion, thereby facilitating the positioning operation of adjacent battery separators when stacking, and further contributing to improving the assembly efficiency of the battery device to which the battery separator assembly is applied.

[0033] A third aspect of the present invention provides a battery device, the battery device comprising:

[0034] A plurality of battery cells are arranged in sequence along the thickness direction, the battery separator or the battery separator assembly is arranged between adjacent battery cells, the air duct ribs of the battery separator abut against the battery cells along the thickness direction, and the adjacent air duct ribs of the battery separator and the battery cells are enclosed to form a branch air duct.

[0035] According to the battery device of the third aspect of the utility model, by applying the above-mentioned battery separator or the above-mentioned battery separator assembly, the battery device can obtain a better heat dissipation effect.

[0036] The fourth aspect of the utility model provides an air-cooled battery pack, which includes the above-mentioned battery device, the battery device includes a branch air duct, and the air-cooled battery pack also includes a main air inlet duct and a main air outlet duct, and the two ends of the branch air duct along the length direction of the battery partition are respectively connected to the main air inlet duct and the main air outlet duct.

[0037] According to the air-cooled battery pack of the fourth aspect of the utility model, by applying the above-mentioned battery device, the heat dissipation efficiency is higher.

[0038] A fourth aspect of the present invention provides an electrical device, which includes the above-mentioned air-cooled battery pack.

[0039] According to the electrical equipment of the fourth aspect of the utility model, by applying the above-mentioned electrical equipment, the heat dissipation effect is better and the service life of the electrical equipment can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0041] Figure 1 A partial three-dimensional view of a battery device according to a preferred embodiment of the present utility model;

[0042] Figure 2 for Figure 1 A partially exploded perspective view of a battery device is shown;

[0043] Figure 3 for Figure 1 a side view of the battery device shown;

[0044] Figure 4 for Figure 1 A three-dimensional view of a first battery separator in FIG.

[0045] Figure 5 It is a front view of a battery separator according to a preferred embodiment of the utility model;

[0046] Figure 6 It is a front view of a battery separator according to another preferred embodiment of the utility model;

[0047] Figure 7 A front view of an air-cooled battery pack according to a preferred embodiment of the utility model; and

[0048] Figure 8 For along Figure 7 A cross-sectional view taken along line AA.

[0049] Description of reference numerals:

[0050] 10: Air-cooled battery pack 11: Upper cover

[0051] 12: Tray 13: Main air inlet

[0052] 13a: Air inlet 14: Main air outlet

[0053] 14a: Air outlet 100: Battery device

[0054] 110: battery separator 111: first battery separator

[0055] 112: Second battery separator 113: Plate body

[0056] 114: Air duct rib 115: Air duct groove

[0057] 115a: air inlet 115b: air outlet

[0058] 116: first partition plate positioning portion 116a: first connection hole

[0059] 116b: first weight-reducing hole 116c: first positioning boss

[0060] 116d: first positioning groove 117: second partition plate positioning portion

[0061] 117a: second weight-reducing hole 117b: second positioning boss

[0062] 117c: second positioning groove 118: third partition plate positioning portion

[0063] 119: fourth separator positioning portion 121: first cell positioning portion

[0064] 122: Second cell positioning portion 123: Cable accommodating portion

[0065] 124: second connection hole 125: third battery cell positioning portion

[0066] 125a: base plate 125b: first supporting rib

[0067] 125c: second supporting rib 126: reinforcing rib

[0068] 127: third connection hole 130: battery cell

[0069] 140: Branch air duct D1: Length direction

[0070] D2: thickness direction D3: height direction DETAILED DESCRIPTION

[0071] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0072] In order to fully understand the implementation of the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the implementation of the present invention is not limited to the specific details familiar to those skilled in the art.

[0073] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention, and the singular forms "a", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, integral bodies, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or combinations thereof.

[0074] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and similar expressions used in the present invention are for illustrative purposes only and are not limiting.

[0075] The "parallel" / "vertical" and similar expressions used in the present invention include an absolute parallel / vertical relationship and a roughly parallel / vertical relationship (for example, a relationship that differs from absolute parallel / vertical by -5° to +5°), which can have the same effect.

[0076] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings show representative embodiments of the present invention and are not intended to limit the present invention.

[0077] The utility model provides a battery separator, a battery separator assembly, a battery device, an air-cooled battery pack and an electrical equipment. When the battery separator is applied to the battery device, the battery separator separates adjacent battery cells. The battery separator assembly includes two types of battery separators, namely a first battery separator and a second battery separator. The battery device includes a plurality of battery separators and a plurality of battery cells. The battery separator is located between adjacent battery cells to separate the adjacent battery cells. The battery separator also serves as a supporting member between adjacent battery cells. The air-cooled battery pack may include at least one battery device. Each battery device may share a main air duct to cool the battery device by air cooling. The electrical equipment includes an air-cooled battery pack.

[0078] The following will refer to Figures 1 to 8 The example shown provides a detailed description of the battery separator 110, the battery separator assembly, the battery device 100, the air-cooled battery pack 10 and the electrical equipment according to the present invention.

[0079] The battery separator 110 according to the utility model may include a plate body 113 and at least two air duct ribs 114. At least two air duct ribs 114 are protrudingly arranged on the surface of the plate body 113 along the thickness direction D2 of the air duct ribs 114. Each air duct rib 114 may be arranged at intervals along the height direction D3 of the plate body 113, for example. An air duct groove 115 is formed between two adjacent air duct ribs 114 and the plate body 113. The extension direction of the air duct groove 115 is consistent with the length direction of the plate body 113. In the extension direction of the air duct groove 115, at least part of the air duct groove 115 is configured to have different cross-sectional areas on a plane perpendicular to the extension direction of the air duct groove 115. The surfaces of each air duct rib 114 away from the plate body 113 along the thickness direction D2 of the plate body 113 are coplanar, so as to be suitable for being attached to the surface of the battery cell 130, so as to enclose an air duct between the plate body 113, the air duct rib 114 and the battery cell 130.

[0080] The battery separator 110 of the present invention can increase the surface area of ​​the air duct groove 115 by setting at least part of the air duct groove 115 to have different cross-sectional areas on a plane perpendicular to the extension direction of the air duct groove 115, thereby increasing the contact area between the battery separator 110 and the airflow, which helps to improve the heat dissipation effect.

[0081] In another optional example, the air duct ribs 114 may also be arranged at intervals along other directions other than the height direction D3 of the plate body 113, such as the length direction D1.

[0082] See also Figure 6 In one example, the cross-sectional area of ​​the air duct groove 115 on a plane perpendicular to the extension direction of the air duct groove 115 increases from the middle to both ends in the extension direction of the air duct groove 115. In this way, both ends of the air duct groove 115 can be suitable for connection to the main air duct, so as to reduce the influence of the connection between the air duct groove 115 and the main air duct on the energy loss and pressure drop of the air flow, and it is also beneficial to reduce the resistance along the way. The two ends of the air duct groove 115 are respectively an air inlet end 115a and an air outlet end 115b spaced along the length direction D1 of the plate body 113. The air inlet end 115a of the air duct groove 115 is suitable for connecting to the total air inlet duct 13. The air outlet end 115b of the air duct groove 115 is suitable for connecting to the total air outlet duct 14.

[0083] See also Figures 1 to 5In another example, the air duct groove 115 has an air inlet end 115a and an air outlet end 115b spaced apart along the length direction D1. The air inlet end 115a of the air duct groove 115 is suitable for connecting to the main air inlet duct 13. The air outlet end 115b of the air duct groove 115 is suitable for connecting to the main air outlet duct 14. The cross-sectional area of ​​the air duct groove 115 on a plane perpendicular to the extension direction of the air duct groove 115 decreases from the air inlet end 115a to the air outlet end 115b in the extension direction of the air duct groove 115. The battery separator 110 of this structural form is distributed in the battery pack at a position close to the air outlet 14a of the main air outlet 14. In this way, the pressure drop of the branch air duct 140 close to the air outlet 14a of the main air outlet 14 can be reduced, and the wind pressure, wind speed, etc. in the branch air duct 140 can be kept consistent with the wind pressure, wind speed, etc. of other branch air ducts 140 arranged in parallel. On the contrary, if the structural feature of the battery separator 110 close to the main air outlet 14 is that the cross-sectional area of ​​the air duct groove 115 on the plane perpendicular to the extension direction of the air duct groove 115 increases from the middle to both ends in the length direction D1 of the plate body 113, the flow velocity of the air flow in the air duct groove 115 is too large, and the pressure drop is also too large, which is not conducive to ensuring the balanced heat dissipation of the battery device 100.

[0084] See also Figures 1 to 6 For example, at the same position of the plate body 113 along the length direction D1 of the plate body 113, the sizes of the air duct grooves 115 located on the same side of the plate body 113 along its own thickness direction D2 along the height direction D3 of the plate body 113 are the same. It should be noted that the same position of the plate body 113 along the length direction D1 here can be understood as the same plane of the plate body 113 perpendicular to its own length direction D1. In other words, at the same plane of the plate body 113 perpendicular to its own length direction D1, the cross-sectional areas of the air duct grooves 115 located on the same side of the plate body 113 along its own thickness direction D2 are the same. In this way, the heat dissipation balance of each part of the plate body 113 at the same plane along the length direction D1 in the height direction D3 of the plate body 113 can be ensured.

[0085] Furthermore, in the same plane perpendicular to the length direction D1 of the plate body 113 , the cross-sectional areas of the air duct grooves 115 are the same.

[0086] Optionally, the air duct ribs 114 may be independent components, connected to the plate body 113 by other means such as bonding and riveting, or may be integrally formed with the plate body 113. The air duct ribs 114 and the number of air ducts may be adjusted according to the specific implementation case. The air duct ribs 114 may be provided on one surface of the plate body 113 along the thickness direction D2, or may be provided on two surfaces of the plate body 113 along the thickness direction D2. The material of the air duct ribs 114 is not limited to plastic, and may also be composite materials, metals, ceramics, etc. with higher thermal conductivity. Among them, when the air duct ribs 114 and even the entire battery separator 110 are made of plastic, it is beneficial to the lightweighting of the battery separator 110.

[0087] Optionally, the relative position relationship of the plurality of air duct ribs 114 on the same battery separator 110 is not limited, and can be parallel or non-parallel. The relative position relationship between the plurality of air duct ribs 114 can also be partially parallel.

[0088] See also Figures 1 to 6 In addition, the battery separator 110 may further include at least two separator positioning portions, such as a first separator positioning portion 116. The first separator positioning portion 116 is connected to the edge of the plate body 113. The first separator positioning portions 116 are arranged at intervals along the length direction D1 of the plate body 113. The first separator positioning portion 116 of one battery separator 110 is suitable for positioning the first separator positioning portion 116 connected to another battery separator 110, so as to limit the position of two adjacent battery separators 110 in the length direction D1 and the thickness direction D2. By providing the first separator positioning portion 116, adjacent battery separators 110 placed side by side can be limited in the length direction D1 and the thickness direction D2.

[0089] Continue reading Figures 1 to 6 For example, the battery separator 110 may include two first separator positioning portions 116. The two first separator positioning portions 116 are respectively located at the two ends of the battery separator 110 along the length direction D1. And the first separator positioning portion 116 is located at the end of the battery separator 110 along the height direction D3. In the illustrated example, the first separator positioning portion 116 is located at the top of the battery separator 110. By providing the first separator positioning portions 116 at the two ends of the battery separator 110 along the length direction D1, two adjacent battery separators 110 can be positioned at the two ends of the battery separator 110 along the length direction D1, respectively, so that the stability of the positioning effect can be improved while simplifying the structure.

[0090] See also Figures 1 to 6Furthermore, the first separator positioning portion 116 is provided with a first connection hole 116a. The first connection hole 116a is arranged to penetrate along the thickness direction D2. When each battery separator 110 is stacked in sequence along the thickness direction D2, the first connection hole 116a is suitable for passing fasteners such as long screws to fasten and constrain each battery separator 110 stacked along the thickness direction D2 as a whole. When the fasteners are fastened, two adjacent battery separators 110 abut against the battery cell 130 located therebetween along the thickness direction D2 to prevent the battery separator 110 and the battery cell 130 from moving relative to each other in the thickness direction D2, thereby limiting the relative positions of the battery cell 130 and the battery separator 110 in the thickness direction D2.

[0091] exist Figures 1 to 4 In the example shown, the first partition positioning portion 116 includes a first positioning boss 116c and a first positioning groove 116d. The first positioning boss 116c and the first positioning groove 116d face different directions in the thickness direction D2. When two adjacent battery partitions 110 are stacked along the thickness direction D2, the first positioning boss 116c of one battery partition 110 is accommodated in the first positioning groove 116d of the other battery partition 110, so that the position of the two adjacent battery partitions 110 in the height direction D3 and the thickness direction D2 is limited by the cooperation of the first positioning boss 116c and the first positioning groove 116d. The first partition positioning portion 116 includes a first weight-reducing hole 116b. The first weight-reducing hole 116b is conducive to the lightweighting of the battery partition 110.

[0092] In other examples not shown, the number of the first separator positioning portion 116 located on the same battery separator 110 may also be one.

[0093] See also Figures 1 to 6 In addition, the battery separator 110 may further include at least two separator positioning portions, such as a second separator positioning portion 117. The second separator positioning portion 117 is connected to the edge of the plate body 113. The second separator positioning portions 117 are arranged at intervals along the height direction D3. The second separator positioning portion 117 of one battery separator 110 is suitable for positioning the second separator positioning portion 117 connected to another battery separator 110, so as to limit the position of two adjacent battery separators 110 in the height direction D3 and the thickness direction D2. By providing the second separator positioning portion 117, adjacent battery separators 110 placed side by side can be limited in the height direction D3 and the thickness direction D2.

[0094] Continue reading Figures 1 to 6For example, the battery separator 110 may include two second separator positioning portions 117. The two second separator positioning portions 117 are respectively located at the two ends of the battery separator 110 along the length direction D1. And the second separator positioning portion 117 is located at the end of the battery separator 110 along the height direction D3. In the illustrated example, the second separator positioning portion 117 is located at the bottom of the battery separator 110. By providing the second separator positioning portions 117 at the two ends of the battery separator 110 along the length direction D1, two adjacent battery separators 110 can be positioned at the two ends of the battery separator 110 along the length direction D1, respectively, so that the stability of the positioning effect can be improved while simplifying the structure.

[0095] exist Figures 1 to 4 In the example shown, the second partition positioning portion 117 includes a second positioning boss 117b and a second positioning groove 117c. The second positioning boss 117b and the second positioning groove 117c face different directions in the thickness direction D2. When two adjacent battery partitions 110 are stacked along the thickness direction D2, the second positioning boss 117b of one battery partition 110 is accommodated in the second positioning groove 117c of the other battery partition 110, so that the position of the two adjacent battery partitions 110 in the height direction D3 and the thickness direction D2 is limited by the cooperation of the second positioning boss 117b and the second positioning groove 117c. The second partition positioning portion 117 includes a second weight-reducing hole 117a. The second weight-reducing hole 117a is conducive to the lightweighting of the battery partition 110.

[0096] See also Figures 1 to 6 Further, the battery separator 110 may include a second connection hole 124. The second connection hole 124 is located at the bottom of the battery separator 110 along the height direction D3. And the second connection hole 124 is set through in the thickness direction D2. In a state where each battery separator 110 is stacked in sequence along the thickness direction D2, the second connection hole 124 is suitable for passing fasteners such as long screws to fasten and constrain each battery separator 110 stacked along the thickness direction D2 as a whole. In a state where the fasteners are fastened, two adjacent battery separators 110 abut against the battery cell 130 located therebetween along the thickness direction D2 to prevent the battery separator 110 and the battery cell 130 from moving relative to each other in the thickness direction D2, thereby limiting the relative positions of the battery cell 130 and the battery separator 110 in the thickness direction D2.

[0097] In other examples not shown, the number of the first separator positioning portion 116 located on the same battery separator 110 may also be one.

[0098] See also Figures 1 to 4According to one embodiment of the utility model, a battery separator assembly may include a first battery separator 111 and a second battery separator 112. The first battery separator 111 may include a first plate body 113 and a third separator positioning portion 118. The third separator positioning portion 118 is connected to the end of the first plate body 113 along the height direction D3. And the third separator positioning portion 118 is located in the middle of the first plate body 113 along the length direction D1. The second battery separator 112 may include a second plate body 113 and a fourth separator positioning portion 119. The fourth separator positioning portion 119 is connected to the end of the second plate body 113 along the height direction D3. And the fourth separator positioning portion 119 is located in the middle of the second plate body 113 along the length direction D1. Among them, the fourth separator positioning portion 119 is adapted to connect the third separator positioning portion 118 to limit the adjacent first battery separator 111 and the second battery separator 112 in the length direction D1 and the thickness direction D2. That is, in the case where a plurality of battery separators 110 are provided, the plurality of battery separators 110 may include two different battery separators 110, namely, a first battery separator 111 and a second battery separator 112. The first battery separator 111 and the second battery separator 112 are positioned by the cooperation of the third separator positioning portion 118 and the fourth separator positioning portion 119. In other words, two adjacent battery separators 110 stacked along the thickness direction D2 are positioned by the cooperation of the third separator positioning portion 118 and the fourth separator positioning portion 119. One of the third separator positioning portion 118 and the fourth separator positioning portion 119 is configured as a positioning boss. The other of the third separator positioning portion 118 and the fourth separator positioning portion 119 is configured as a positioning groove. The first battery separator 111 and the second battery separator 112 both have most of the structural features of the above-mentioned battery separator 110, and the main difference is that the first battery separator 111 has a third separator positioning portion 118, and the second battery separator 112 has a fourth separator positioning portion 119, and the structures of the third separator positioning portion 118 and the fourth separator positioning portion 119 are different.

[0099] According to the battery separator assembly of the present invention, by dividing a plurality of battery separators 110 into two types of battery separators, namely a first battery separator 111 having a third separator positioning portion 118 and a second battery separator 112 having a fourth separator positioning portion 119, when the plurality of battery separators 110 are stacked along a thickness direction D2 of the battery separator 110, it is convenient to achieve the limitation of two adjacent battery separators 110 in the length direction D1 of the battery separator 110 and the thickness direction D2 of the battery separator 110 through the cooperation between the fourth separator positioning portion 119 and the third separator positioning portion 118, thereby facilitating the positioning operation of adjacent battery separators 110 when stacked, thereby helping to improve the assembly efficiency of the battery device to which the battery separator assembly is applicable.

[0100] exist Figure 1 , Figure 2 as well as Figure 4 In the example shown, the third separator positioning portion 118 provided on the first battery separator 111 includes two positioning grooves. The openings of the two positioning grooves face away from each other in the thickness direction D2 of the battery separator 110. The fourth separator positioning portion 119 provided on the second battery separator 112 includes two positioning bosses. The two positioning bosses are arranged oppositely in the thickness direction D2 of the battery separator 110. The positioning groove is suitable for accommodating the positioning bosses to limit the adjacent first battery separator 111 and the second battery separator 112 in the thickness direction D2 of the battery separator 110 and the length direction D1 of the battery separator 110.

[0101] See also Figures 1 to 6 Optionally, the battery separator 110 may include a third connection hole 127. The third connection hole 127 is arranged corresponding to the third separator positioning portion 118 and the fourth separator positioning portion 119. The third connection hole 127 is arranged through the thickness direction D2 of the battery separator 110. When each battery separator 110 is stacked in sequence along the thickness direction D2, the third connection hole 127 is suitable for passing fasteners such as long screws to fasten and constrain each battery separator 110 stacked along the thickness direction D2 of the battery separator 110 as a whole. When the fasteners are fastened, two adjacent battery separators 110 and the battery cell 130 located therebetween abut against each other along the thickness direction D2 of the battery separator 110 to prevent the battery separator 110 and the battery cell 130 from moving relative to each other in the thickness direction D2 of the battery separator 110, thereby limiting the relative positions of the battery cell 130 and the battery separator 110 in the thickness direction D2 of the battery separator 110.

[0102] Continue reading Figures 1 to 6 In addition, the battery separator 110 may further include at least one group of first battery cell positioning parts 121. Each group of first battery cell positioning parts 121 includes two first battery cell positioning parts 121. The two first battery cell positioning parts 121 are arranged at intervals along the length direction D1 of the battery separator 110. The two first battery cell positioning parts 121 of the same group are suitable for accommodating a single battery cell 130 to limit the position of the single battery cell 130 in the length direction D1 of the battery separator 110. By setting the first battery cell positioning parts 121, the position of the battery cell 130 along the length direction D1 of the battery separator 110 can be limited to prevent the battery cell 130 from moving along the length direction D1. The length direction D1 of the battery separator 110 can be parallel to the length direction of the battery cell 130, the thickness direction D2 of the battery separator 110 can be parallel to the thickness direction of the battery cell 130, and the height direction D3 of the battery separator 110 can be parallel to the height direction of the battery cell 130. The battery cell 130 here is, for example, a blade battery cell.

[0103] See also Figures 1 to 6For example, the battery separator 110 may include two groups of first battery cell positioning portions 121. The two groups of first battery cell positioning portions 121 are arranged side by side along the length direction D1 of the battery separator 110. That is, two battery cells 130 are suitable for being placed between two adjacent battery separators 110. The two battery cells 130 are arranged in the space between the two adjacent battery separators 110 along the length direction D1 of the battery separator 110, and are limited in the length direction D1 of the battery separator 110 by the first battery cell positioning portions 121.

[0104] See also Figures 1 to 6 In addition, the battery separator 110 may further include at least one group of second battery cell positioning portions 122. Each group of second battery cell positioning portions 122 includes two second battery cell positioning portions 122. The two second battery cell positioning portions 122 are spaced apart along the height direction D3. The two second battery cell positioning portions 122 of the same group are suitable for accommodating a single battery cell 130 to limit the position of the single battery cell 130 in the height direction D3. By setting the second battery cell positioning portions 122, it is possible to limit the position of the battery cell 130 along the length direction D1 of the battery separator 110 to prevent the battery cell 130 from moving along the height direction D3 of the battery separator 110.

[0105] See also Figures 1 to 6 For example, the battery separator 110 may include two sets of second battery cell positioning portions 122. The two sets of second battery cell positioning portions 122 are arranged side by side along the length direction D1 of the battery separator 110. That is, two battery cells 130 are suitable for being placed between two adjacent battery separators 110. The two battery cells 130 are arranged in the space between the two adjacent battery separators 110 along the length direction D1 of the battery separator 110, and are limited in the height direction D3 of the battery separator 110 by the second battery cell positioning portions 122.

[0106] The first battery separator 111 and the second battery separator 112 enclose a storage space suitable for accommodating the battery cell 130. The storage space includes two sub-accommodation spaces. A single sub-accommodation space is suitable for accommodating a single battery cell 130. At each sub-accommodation space, the first battery cell positioning portion 121 and the second battery cell positioning portion 122 are used to constrain the freedom of the battery cell 130 in the length direction D1 of the battery separator 110 and the height direction D3 of the battery separator 110. The first battery separator 111 and the second battery separator 112 constrain the freedom of the battery cell 130 in the thickness direction D2 of the battery separator 110.

[0107] exist Figure 3 In the example shown, one of the two surfaces of the plate body 113 of each battery separator 110 along the thickness direction D2 thereof is provided with air duct ribs 114 , and the other surface is configured as a smooth surface.

[0108] See also Figures 1 to 6Further, the second cell positioning portion 122 is disposed on the top of the battery separator 110 . That is, the second cell positioning portion 122 constrains one degree of freedom of the cell 130 in the height direction D3 of the battery separator 110 at the top of the battery separator 110 .

[0109] exist Figure 1 , Figure 2 as well as Figure 4 In the example shown, each battery separator 110 may include four second battery cell positioning portions 122. Two of the second battery cell positioning portions 122 are located in the middle of the battery separator 110 along the length direction D1 of the battery separator 110, and the other two second battery cell positioning portions 122 are located at both ends of the battery separator 110 along the length direction D1 of the battery separator 110. The second battery cell positioning portion 122 is configured as a plate-like structure. For the first battery separator 111, a reinforcing rib 126 is provided at the top of the second battery cell positioning portion 122 located in the middle of the first battery separator 111 along the length direction D1 of the battery separator 110; the second battery cell positioning portion 122 located at the end of the first battery separator 111 along the length direction D1 of the battery separator 110 may not be provided with a reinforcing rib 126. For the second battery separator 112, the second battery cell positioning portion 122 located in the middle of the second battery separator 112 along the length direction D1 of the battery separator 110 may not be provided with a reinforcing rib 126; the second battery cell positioning portion 122 located at the end of the second battery separator 112 along the length direction D1 of the battery separator 110 is provided with a reinforcing rib 126 at the top. The reinforcing rib 126 here can strengthen the structural strength of the second battery cell positioning portion 122. In this way, when the battery cell 130 is limited in the height direction D3 of the battery separator 110 by using two adjacent battery separators 110, the two second battery cell positioning portions 122 connected with the reinforcing rib 126 are relatively arranged along the diagonal line of the top of the battery cell 130.

[0110] exist Figure 5 and Figure 6 In the example shown, each second battery cell positioning portion 122 is connected to a reinforcing rib 126 .

[0111] In addition, the battery separator 110 may further include a third battery cell positioning portion 125. The third battery cell positioning portion 125 is located at the lower portion of the battery separator 110. The third battery cell positioning portion 125 is spaced apart from the second battery cell positioning portion 122 in the height direction D3 of the battery separator 110. The third battery cell positioning portion 125 is used to support the battery cell 130 to radically constrain the freedom of the battery cell 130 to move downward in the height direction D3 of the battery separator 110.

[0112] See also Figures 1 to 6For example, the third battery cell positioning portion 125 may include a substrate 125a, a first support rib 125b, and a second support rib 125c. The substrate 125a is protrudingly disposed on the surface of the plate body 113 along the thickness direction D2. The substrate 125a is extended along the length direction D1 of the battery separator 110. The plate thickness direction of the substrate 125a is consistent with the height direction D3 of the battery separator 110. The upper surface of the substrate 125a extends upward to form a first support rib 125b. The first support rib 125b is used to support the battery cell 130. The lower surface of the substrate 125a extends downward to form a second support rib 125c. A plurality of second support ribs 125c are provided. A plurality of second support ribs 125c are spaced apart along the length direction D1 of the battery separator 110. The second support rib 125c is used as a foot of the battery separator 110 in the shell of the battery pack, thereby reducing the contact area between the battery separator 110 and the shell of the battery pack and other components.

[0113] Continue reading Figures 1 to 6 For example, the top of the battery separator 110 along the height direction D3 of the battery separator 110 may include a cable accommodating portion 123. The cable accommodating portion 123 is extended along the thickness direction D2. The cable accommodating portion 123 is suitable for accommodating cables or wire harnesses. When each battery separator 110 is stacked along the thickness direction D2 of the battery separator 110, the cable accommodating portion 123 extends in the thickness direction D2 of the battery separator 110 to be suitable for arranging cables and wire harnesses.

[0114] exist Figure 1 , Figure 2 as well as Figures 4 to 6 In the example shown, the cable accommodating portion 123 can be configured as a cable accommodating groove. The cable accommodating groove is located at the top of the first separator positioning portion 116. The cable or wire harness extending along the thickness direction D2 of the battery separator 110 can be laid out through the cable accommodating groove, and the cable or wire harness can be limited in the length direction D1 of the battery separator 110, so that the cable or wire harness can be protected while improving the neatness of the cable or wire harness layout.

[0115] like Figure 5 and Figure 6As shown, the right side is the air duct entrance, i.e., the air inlet end 115a. The air inlet end 115a here can be understood as one end of the air duct formed by the battery separator 110 and the battery cell 130, and is not necessarily the air inlet 13a of the air-cooled battery pack 10. Usually, huge resistance will be generated from the air inlet 13a to the air inlet end 115a due to the sudden change in cross section. Therefore, the smaller the cross-sectional area of ​​the air duct ribs 114 at the air inlet end 115a, the larger the cross-sectional area of ​​the air duct, thereby reducing the cross-sectional change rate between the air inlet end 115a and the air inlet 13a, and thus reducing wind resistance. The left side is the air duct outlet, i.e., the air outlet end 115b. The air outlet end 115b here can be understood as the other end of the air duct formed by the battery separator 110 and the battery cell 130, and is not necessarily the air outlet 14a of the air-cooled battery pack 10. The wind resistance reduction of the air outlet end 115b is similar. The shape of the air duct rib 114 is streamlined in the middle of the air duct, which can reduce the wind resistance along the way.

[0116] On the other hand, under the same height and length conditions, compared with the straight air duct ribs 114, the streamlined air duct ribs 114 have a larger surface area, so that the battery separator 110 has a larger heat dissipation area, thereby improving the heat dissipation effect.

[0117] According to the battery separator 110 of the utility model, a streamlined air duct rib 114 structure is adopted. The cross-sectional area of ​​the air duct rib 114 changes along the wind direction. This structure has better aerodynamic performance while maintaining the same supporting function, reduces wind resistance and energy consumption, and increases the heat dissipation area. Specifically, it is embodied in: (1) small energy loss at the air duct inlet; (2) small pressure drop at the air duct outlet; (3) small resistance along the air duct; (4) the surface area of ​​the support rib increases, that is, the heat dissipation area increases.

[0118] See also Figures 1 to 6 The utility model also provides a battery device 100. The battery device 100 may include a plurality of battery cells 130. The plurality of battery cells 130 are arranged in sequence along their thickness direction D2. A battery separator 110 as described above is arranged between adjacent battery cells 130. The air duct ribs 114 of the battery separator 110 abut against the battery cells 130 along the thickness direction D2 of the battery separator 110. The adjacent air duct ribs 114 of the battery separator 110 and the battery cells 130 enclose a branch air duct 140.

[0119] According to the battery device 100 of the present invention, by applying the above-mentioned battery separator 110, the battery device 100 can obtain a better heat dissipation effect.

[0120] Continue to read 1 to Figure 6According to the utility model, the battery device 100 may include a plurality of battery cells 130 and a plurality of battery separators 110. A plurality of battery cells 130 are stacked side by side. A battery separator 110 is arranged between adjacent battery cells 130. The battery separator 110 protects and supports the battery cells 130. Concave-convex structures are arranged on the upper and lower parts of the battery separator 110, and the concave-convex structures cooperate with each other to position when stacked. Specifically, the concave-convex structure located at the upper part of the battery separator 110 is a first separator positioning portion 116. The concave-convex structure located at the lower part of the battery separator 110 is a second separator positioning portion 117. An air duct rib 114 is arranged in the middle part of the battery separator 110, and the air duct rib 114 serves to resist the expansion of the battery cell 130 and form a branch air duct 140.

[0121] The battery device 100 and the air-cooled battery pack 10 having the same according to the present invention may further include conductive connectors, restraint end plates, fasteners, seals and other configurations, which will not be described in detail herein.

[0122] See also Figures 1 to 8The utility model also provides an air-cooled battery pack 10. The air-cooled battery pack 10 may include the above-mentioned battery device 100. The battery device 100 may include a branch air duct 140. The air-cooled battery pack 10 may also include a total air inlet duct 13 and a total air outlet duct 14. The total air inlet duct 13 and the total air outlet duct 14 may be located outside the battery separator 110 at both ends along the length direction D1 of the battery separator 110. The branch air duct 140 is connected to the total air inlet duct 13 and the total air outlet duct 14 at both ends along the length direction D1 of the battery separator 110. The total air inlet duct 13 here may be referred to as the main air inlet channel of the air-cooled battery pack 10. The main air inlet channel is a channel defined by the inner wall of the shell of the air-cooled battery pack and one end of the battery device 100 along the length direction D1 of the battery separator 110. The main air inlet channel is used to transport gas. An air inlet 13a is provided on the shell of the air-cooled battery pack 10 corresponding to the main air inlet channel. The air inlet 13a is used to connect to the air conditioning system of the vehicle, for example, to receive the lower temperature gas delivered by the air conditioning system. The main air inlet channel is used to deliver lower temperature gas and to supply lower temperature gas to each branch air duct 140 of the battery device 100. The main air inlet channel can reduce the time difference of each branch air duct 140 in receiving lower temperature gas, ensuring that each branch air duct 140 can receive lower temperature gas more synchronously, that is, the main air inlet channel can achieve uniform air distribution, thereby making the cooling effect of each part of the battery device 100 more consistent. Accordingly, the total air outlet 14 here can be referred to as the main air outlet channel of the air-cooled battery pack 10. The main air outlet channel is a channel defined by the inner wall of the shell of the air-cooled battery pack 10 and the other end of the battery device 100 along the length direction D1 of the battery separator 110. The main air outlet channel is used to deliver gas. An air outlet 14a is provided on the shell of the air-cooled battery pack corresponding to the main air outlet channel. The air outlet 14a is used to be connected to, for example, the air conditioning system of a vehicle, so as to output higher temperature gas to the air conditioning system. The main air outlet channel is used to collect the higher temperature gas from each branch air duct 140 and send it to the air conditioning system so that the gas can be cooled by the air conditioning system. The main air outlet channel can reduce the time difference in the exhaust gas of each branch air duct 140, thereby ensuring that each branch air duct 140 can more synchronously discharge the gas that has absorbed the heat of the battery cell 130, thereby making the cooling effect of each part of the battery device 100 more consistent. By adopting the above-mentioned total air inlet duct 13 and the above-mentioned total air outlet duct 14, it is possible to more effectively ensure the consistency of the residence time of the gas participating in the cooling cycle in each branch air duct 140 of the battery device 100, thereby helping to cool the battery device 100 more evenly.

[0123] According to the air-cooled battery pack 10 of the present invention, by applying the above-mentioned battery device 100, the heat dissipation efficiency is higher.

[0124] Optionally, the surface of the shell of the air-cooled battery pack 10 facing the main air inlet duct 13 and the main air outlet duct 14 can be configured to have a curved surface. The curved surface here is used to achieve the purpose of more uniform and more synchronous air supply to each branch air duct 140, and to achieve the purpose of more uniform and more synchronous exhaust of each branch air duct to the main air outlet duct 14.

[0125] See also Figure 7 and Figure 8 For example, the main air outlet 14 has an air outlet 14a. One or more battery separators 110 (such as Figure 8 On the battery separator 110 in the dotted frame, the width of the air duct groove 115 decreases from the air inlet end 115a to the air outlet end 115b in the length direction D1 of the battery separator 110. The width of the air duct groove 115 is the dimension of the air duct groove 115 along the height direction D3 of the battery separator 110. In other words, the cross-section of the air duct groove 115 on the plane perpendicular to the extension direction of the air duct groove 115 decreases from the air inlet end 115a to the air outlet end 115b. In this way, the pressure drop of the branch air duct 140 close to the air outlet 14a can be reduced, and the wind pressure, wind speed, etc. in the branch air duct 140 can be kept consistent with the wind pressure, wind speed, etc. of other branch air ducts 140 arranged in parallel. On the contrary, if the battery separator 110 near the main air outlet 14 has a structural feature that the size of the air duct groove 115 along the height direction D3 of the battery separator 110 increases from the middle to both ends in the length direction D1 of the battery separator 110, the flow velocity of the air flow in the air duct groove 115 is too large, and the pressure drop is also too large, which is not conducive to ensuring the balanced heat dissipation of the battery device 100.

[0126] Optionally, the linear air duct structure is not limited to being set on the battery partition 110, but can also be applied to other parts, such as the side guard plate and the bottom guard plate of the battery cell 130. Depending on the position of the fan, the air inlet 13a, and the air outlet 14a of the battery pack, the streamlined air duct structure can be set in these structural parts.

[0127] In order to reduce wind resistance, the surface curvature of the streamlined structure outside the air duct rib 114 can be adjusted during design according to the different positions of the air inlet 13a, the uniform temperature requirements of the battery cell 130, etc., or the air inlet end 115a and the air outlet end 115b of the branch air duct 140 can be directed in a specific direction.

[0128] See also Figure 7 and Figure 8 Optionally, the air-cooled battery pack 10 may include an upper cover 11 and a tray 12. The upper cover 11 is connected to the upper portion of the tray 12 to enclose a battery accommodation space. The battery cell 130 assembly is accommodated in the battery accommodation space. The main air inlet 13 and the main air outlet 14 are located in the accommodation space and are connected to the outside through the air inlet 13a and the air outlet 14a.

[0129] The utility model further provides an electric device, which may include the air-cooled battery pack 10 described above.

[0130] According to the electrical equipment of the utility model, by applying the above-mentioned electrical equipment, the heat dissipation effect is better and the service life of the electrical equipment can be extended.

[0131] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0132] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A battery separator, characterized in that: The battery separator comprises: a plate body; and At least two air duct ribs, at least two of which are protrudingly arranged on the surface of the plate body along the thickness direction of the plate body, and two adjacent air duct ribs and the plate body are surrounded to form an air duct groove, Along the extension direction of the air duct groove, at least part of the air duct groove has different cross-sectional areas on a plane perpendicular to the extension direction of the air duct groove.

2. The battery separator according to claim 1, characterized in that The air duct ribs are arranged at intervals along the height direction of the plate body.

3. The battery separator according to claim 2, characterized in that: The cross-sectional area of ​​the end of the air duct groove along its own extension direction on a plane perpendicular to the extension direction of the air duct groove is larger than the cross-sectional area of ​​the middle part of the air duct groove along its own extension direction on a plane perpendicular to the extension direction of the air duct groove.

4. The battery separator according to claim 3, characterized in that: The cross-sectional area of ​​the air duct groove on a plane perpendicular to the extending direction of the air duct groove increases from the middle to both ends in the extending direction of the air duct groove.

5. The battery separator according to claim 2, characterized in that: The air duct groove has an air inlet end and an air outlet end spaced apart along the length direction of the plate body, and the air inlet end of the air duct groove is suitable for connecting to the main air inlet duct of the air-cooled battery pack. In the length direction of the plate body, the cross-sectional area of ​​the air duct groove on a plane perpendicular to the extending direction of the air duct groove decreases from the air inlet end to the air outlet end.

6. The battery separator according to claim 2, characterized in that: In the same plane perpendicular to the length direction of the plate body, the cross-sectional areas of the air duct grooves located on the same side of the plate body along its thickness direction are the same.

7. The battery separator according to any one of claims 1 to 6, characterized in that The battery separator further includes a separator positioning portion, and the separator positioning portions of adjacent battery separators are connected to each other to position the adjacent battery separators.

8. The battery separator according to claim 7, characterized in that: The battery separator comprises at least two separator positioning parts, each of which is arranged at intervals along the length direction of the plate body, adjacent battery separators are connected to each other through the separator positioning parts, and adjacent battery separators are limitedly matched with each other in the length direction of the plate body through the separator positioning parts; and / or The battery partition includes at least two partition positioning parts, each of which is arranged at intervals along the height direction of the plate body, adjacent battery partitions are connected to each other through the partition positioning parts, and adjacent battery partitions are limited and matched with each other in the height direction of the plate body through the partition positioning parts.

9. The battery separator according to any one of claims 1 to 6, characterized in that The battery separator also includes: At least one group of first battery cell positioning portions, each group of the first battery cell positioning portions includes two first battery cell positioning portions, the two first battery cell positioning portions are spaced apart along the length direction of the board body, and the two first battery cell positioning portions of the same group are suitable for accommodating a single battery cell to limit the single battery cell in the length direction of the board body.

10. The battery separator according to claim 9, characterized in that The battery separator includes two groups of first battery cell positioning portions, and the two groups of first battery cell positioning portions are arranged side by side along the length direction of the plate body.

11. The battery separator according to any one of claims 1 to 6, characterized in that The battery separator also includes: At least one group of second battery cell positioning portions, each group of second battery cell positioning portions includes two second battery cell positioning portions, the two second battery cell positioning portions are spaced apart along the height direction of the board body, and the two second battery cell positioning portions of the same group are suitable for accommodating a single battery cell to limit the single battery cell in the height direction of the board body.

12. The battery separator according to claim 11, characterized in that The battery separator includes two groups of second battery cell positioning portions, and the two groups of second battery cell positioning portions are arranged side by side along the length direction of the plate body.

13. The battery separator according to claim 11, characterized in that The second battery cell positioning portion is located on the upper portion of the battery separator. The battery separator also includes a third battery cell positioning portion, which is located at the lower part of the battery separator, and is arranged opposite to the second battery cell positioning portion in the height direction of the plate body, and is used to support the battery cell.

14. The battery separator according to any one of claims 1 to 6, characterized in that The top of the battery separator along the height direction of the plate body comprises a cable accommodating portion, the cable accommodating portion is extended along the thickness direction of the plate body, and the cable accommodating portion is suitable for accommodating cables or wire harnesses.

15. A battery separator assembly, characterized in that: The battery separator assembly comprises a plurality of battery separators according to any one of claims 1 to 14, wherein the plurality of battery separators are divided into a first battery separator and a second battery separator, and the first battery separator and the second battery separator are alternately arranged in a thickness direction of the battery separator. The first battery separator includes a first plate body and a third separator positioning portion, wherein the third separator positioning portion is connected to an end portion of the first plate body along its own height direction, and the third separator positioning portion is located in the middle portion of the first plate body along its own length direction; The second battery separator includes a second plate body and a fourth separator positioning portion, wherein the fourth separator positioning portion is connected to an end portion of the second plate body along its own height direction, and the fourth separator positioning portion is located in the middle portion of the second plate body along its own length direction, The fourth separator positioning portion is adapted to be connected to the third separator positioning portion so as to limit the adjacent first battery separator and the second battery separator in the length direction of the battery separator and the thickness direction of the battery separator.

16. A battery device, characterized in that: The battery device comprises: A plurality of battery cells are arranged in sequence along the thickness direction, a battery separator as described in any one of claims 1 to 14 or a battery separator assembly as described in claim 15 is arranged between adjacent battery cells, the air duct ribs of the battery separator abut against the battery cells along the thickness direction, and branch air ducts are formed between adjacent air duct ribs of the battery separator and the battery cells.

17. An air-cooled battery pack, characterized in that: The air-cooled battery pack includes a battery device according to claim 16, the battery device includes a branch air duct, and the air-cooled battery pack also includes a main air inlet duct and a main air outlet duct, and the two ends of the branch air duct along the length direction of the battery partition are respectively connected to the main air inlet duct and the main air outlet duct.

18. An electrical equipment, characterized in that: The electrical equipment includes the air-cooled battery pack as described in claim 17.

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