Battery cell isolation assembly and battery pack

Abstract

The application relates to the technical field of power batteries, and provides a battery cell isolation assembly and a battery pack. The battery cell isolation assembly comprises a pair of isolation plates, the isolation plates are arranged in the shape of the side housing of a battery cell, the two sides of the isolation plates are respectively configured as a mounting side for connecting the side housing and an abutting side for abutting with another isolation plate, the abutting side is provided with a protruding structure, the protruding structure is provided with a channel for passing fluid, when the abutting sides of the two isolation plates abut, the protruding structures on the two isolation plates abut and are connected, a heat dissipation chamber is formed on the upper and lower sides of the protruding structure, and the heat dissipation chamber is communicated with the outside through the channel. The battery cell isolation assembly provided by the application utilizes the heat dissipation chamber between the two isolation plates and the channel on the protruding structure to form a smooth air circulation path on the side of the battery cell, which provides good conditions for air cooling or liquid cooling of the battery cell, and is favorable for improving the insulation and heat dissipation effect between the battery cells in the battery pack.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and in particular to a cell isolation component and battery pack. Background Technology

[0002] In a power battery pack, multiple battery cells are densely arranged; these cells come in various shapes and types, with prismatic cells being the most common. Because the cell casing is typically made of metal, it offers high mechanical strength and safety. The prismatic cell design results in excellent space utilization and energy density, making it widely used in new energy vehicles, energy storage systems, and other fields.

[0003] However, since the casing of square battery cells is usually made of conductive metal, direct contact between densely packed cells in a battery pack may cause short circuits between batteries or between cells and the battery pack casing. Most existing battery cells use a blue film to isolate the metal surface and reduce the risk of short circuits. However, in scenarios where battery packs are densely packed, the spacing between cells is small, and close contact between the side casings of the cells may lead to poor local heat dissipation, causing the battery temperature to rise. This has an adverse effect on the insulation performance of the blue film and the operating performance of the cells, posing a significant risk of battery short circuits and reduced power supply performance. Utility Model Content

[0004] In view of this, this application aims to provide a cell isolation assembly to improve the insulation and heat dissipation between cells in a battery pack.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A cell isolation assembly is used for isolation between two adjacent cells in a battery pack. The cell isolation assembly includes a pair of isolation plates, which are shaped to conform to the side housing of the cell. The two sides of the isolation plates are respectively configured as a mounting side for connecting to the side housing and an abutting side for abutting and cooperating with the other isolation plate. The abutting side is provided with a protruding structure, and the protruding structure is provided with a channel for fluid to pass through; when the abutting sides of the two isolation plates are engaged, the protruding structures on the two isolation plates are connected to each other, and heat dissipation chambers are formed on the upper and lower sides of the protruding structure, and the heat dissipation chambers are connected to the outside through the channel.

[0006] Furthermore, the protruding structure includes a pipe array arranged along the width direction of the isolation plate, and the channel includes multiple pipes spaced apart on the pipe array; each pipe is arranged along the height direction of the isolation plate to connect the heat dissipation chambers on the upper and lower sides of the pipe array.

[0007] Furthermore, along the height direction of the isolation plate, a plurality of the pipe rows are spaced apart on the contact side.

[0008] Furthermore, the isolation plate is provided with heat dissipation holes, and the heat dissipation chamber is connected between the mounting side and the heat dissipation chamber.

[0009] Furthermore, it also includes a mounting base that can be pre-installed on the side housing, and the mounting base is inserted into the mounting side.

[0010] Furthermore, the mounting base and the mounting side are connected by a mortise and tenon structure; the mortise and tenon structure includes a tenon on the mounting base and a mortise on the mounting side, and the tenon can be inserted into the mortise along the arrangement direction of the mortise.

[0011] Furthermore, the mortise is arranged along the width direction of the partition plate and extends through the entire partition plate.

[0012] Furthermore, it also includes a jumper plate; the top of the isolation plate is provided with a slot, and the jumper plate includes a main body with two slotted plates at the bottom. When the two isolation plates are engaged at their abutting sides, the two slotted plates can be respectively inserted into the slots on the two isolation plates, so that the main body is connected to the top of the two isolation plates.

[0013] Furthermore, the jumper plate also includes two sets of protective plates, which are respectively disposed on both sides of the main body in the thickness direction of the isolation plate, and the protective plates have through holes; when the cell isolation assembly is disposed between two adjacent cells, the two sets of protective plates are respectively fitted onto the terminals of the corresponding cells through the through holes, thereby covering the area on the cell cover plate around the terminals.

[0014] Compared with related technologies, this application has the following advantages: (1) The cell isolation assembly of this application sets a pair of isolation plates between two adjacent cells and uses the protrusion structure set on the abutting side of the isolation plate. When the two isolation plates are respectively assembled onto the opposite side shells of the two adjacent cells, the abutting sides of the two isolation plates are connected by the protrusion structure thereon. This allows the cell isolation assembly to achieve insulation isolation between two adjacent cells. At the same time, it can form a smooth air flow path on the side of the cell by using the heat dissipation chamber formed between the two isolation plates and the channel on the protrusion structure. This provides good conditions for air cooling or liquid cooling of the cell and is conducive to improving the insulation isolation and heat dissipation effect between cells in the battery pack.

[0015] (2) By setting a protruding tube array on the abutting side of the isolation plate, the above-mentioned protruding structure is formed. This structure not only allows the tube array on the other isolation plate in the same pair to abut and cooperate, but also forms heat dissipation chambers on the upper and lower sides of the tube array. Furthermore, by setting pipes on the tube array, channels for conducting heat dissipation chambers can be formed. Using pipes can more accurately and efficiently guide the gas or liquid used to cool the battery cell to the heat dissipation chamber in the battery cell isolation assembly, which can reduce the risk of gas or liquid leakage around the battery cell isolation assembly and improve the cooling effect.

[0016] (3) By setting multiple pipe rows at intervals along the height of the isolation plate, multiple heat dissipation chambers arranged vertically can be formed between the two isolation plates; and by using the contact and cooperation of the multiple sets of pipe rows correspondingly set on the two isolation plates, it is more conducive to improving the contact and cooperation effect between the two isolation plates and improving the overall structural stability of the cell isolation assembly.

[0017] (4) By setting heat dissipation holes on the plate body of the isolation plate, the installation side and the contact side of the isolation plate can be connected through, so that the fluid between the cell and the installation side can be smoothly guided to the heat dissipation chamber, or the fluid in the heat dissipation chamber can be made to flow towards the installation side, so that the cooling medium is closer to the cell, thereby improving the cooling and heat dissipation performance of the cell.

[0018] (5) By configuring a mounting base for the separator, the mounting base can be pre-installed on the side housing of the cell drive by adhesive bonding or through a slot or other structure. Then the separator is inserted into the mounting base, realizing the pre-assembly of the cell separator component on the cell. When assembling the battery pack, the cells with the pre-assembled separator can be directly arranged into the battery pack in sequence, which helps to reduce the assembly operations of the battery pack and thus improve the assembly efficiency.

[0019] (6) The protruding structure between the isolation plate and the mounting base not only facilitates the integral processing of the structure on the isolation plate and the mounting base, but also has the advantages of convenient insertion operation and reliable connection performance.

[0020] (7) The mortise is arranged in the width direction of the partition plate, so the insertion of the partition plate and the mounting base can be carried out in the width direction of the partition plate. Moreover, the two ends of the mortise on the partition plate can be used for the tenon on the mounting base to be inserted, which is conducive to improving the insertion and combination efficiency between the partition plate and the mounting base.

[0021] (8) A jumper plate is installed on the top of the separator plate, which can effectively connect the tops of a pair of separator plates located between two adjacent cells; this improves the overall integrity and helps to make the spacing between cells in the battery pack more uniform and precise; moreover, the separator plate is fixed to the cell through the mounting base, and the two separator plates are connected by the jumper plate, so that the cells in the same row are connected as one unit through the cell isolation components in between, which helps to improve the stability of the cell arrangement structure. The jumper plate and the separator plate adopt a slot-type connection, which has the advantages of convenient and efficient assembly operation.

[0022] (9) Protective plates are set on both sides of the main body of the jumper plate. The protective plates can effectively cover the cell cover plate on top of the cell located in the area around the pole. The through holes on the protective plates adopt the same radial size as the pole, so that the pole can pass through. In this way, when welding the circuit on the pole, the welding operation is less likely to bump and damage the cell cover plate. The circuit welded on the pole is also less likely to short circuit with the cell cover plate, which greatly improves the insulation and protection effect of the pole and its adjacent area.

[0023] Another objective of this application is to provide a battery pack employing the cell isolation assembly described in this application. The battery pack of this application possesses the technical advantages of the aforementioned cell isolation assembly. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application. The directional terms such as front / back, up / down, etc., used therein are only used to indicate relative positional relationships and do not constitute an improper limitation of this application. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the cell isolation assembly described in this application embodiment disposed in the battery pack; Figure 2 for Figure 1 The diagram shows the structure of two adjacent cells and their cell isolation assembly in the battery pack. Figure 3 for Figure 2 Exploded views of the components shown; Figure 4 for Figure 3 A schematic diagram of the assembly structure of the isolation plate and the crossover plate shown; Figure 5 for Figure 4 The diagram shows a split structure of the isolation plate and the crossover plate.

[0025] Explanation of reference numerals in the attached figures: 1. Battery pack casing; 2. Battery cell; 20. Side housing; 200. Mounting slot; 21. Battery cell cover; 210. Terminal post; 3. Isolation plate; 30. Heat dissipation chamber; 300. Mortise groove; 301. Piping array; 3010. Middle piping array; 3011. Lower piping array; 3012. Upper piping array; 302. Internal air blowing pipe; 303. Air inlet pipe; 304. Exhaust pipe; 305. Heat dissipation hole; 306. Slot; 4. Mounting base; 400mm tenon; 5. Jumper board; 50. Main board body; 500. Card board; 51. Protective plate; 510. Via. Detailed Implementation

[0026] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] Furthermore, it should be stated in the description of this application that if terms indicating orientation or positional relationship, such as "up," "down," "left," "right," "front," "back," "inner," or "outer," appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and for clarity and conciseness of expression, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this application. Taking the cell isolation assembly described in this application as an example, the directional terms used in the embodiments, such as the up-down direction (also known as the height direction), the width direction, and the thickness direction, are all defined based on the isolation plate in the cell isolation assembly. Specifically, as shown in the accompanying drawings, the X direction is the width direction of the isolation plate, the Y direction is the thickness direction of the isolation plate, and the Z direction is the height direction of the isolation plate.

[0029] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0030] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] As is well known, power battery packs contain a dense array of cells. In the more common arrangement of square cells, since the casing of square cells is usually made of conductive metal, direct contact between the densely packed cells in the battery pack may lead to short circuits between the cells or between the cells and the battery pack casing. Most existing cells use a blue film to isolate the metal surface and reduce the risk of short circuits. However, in scenarios where battery packs are densely arranged, the spacing between cells is small, and the close contact between the side casings of the cells may lead to poor local heat dissipation, causing the battery temperature to rise. This has an adverse effect on the insulation performance of the blue film and the operating performance of the cells, posing a significant risk of battery short circuits and reduced power supply performance.

[0032] In view of the above-mentioned problems in the related technologies, this application innovatively proposes a brand-new cell isolation component that can improve the insulation isolation and heat dissipation effect between cells 2 in the battery pack.

[0033] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0034] An embodiment of the first aspect of this application provides a cell isolation assembly, which can be applied to isolation scenarios between two adjacent cells 2 within a battery pack; an exemplary structure is as follows: Figure 1 , Figure 2 and Figure 3 As shown.

[0035] Overall, the cell isolation assembly includes a pair of isolation plates 3; each of the pair of isolation plates 3 is shaped to conform to the side housing 20 of the cell 2, and the two sides of the isolation plate 3 are respectively configured as a mounting side for connecting the side housing 20 and an abutting side for abutting with the other isolation plate 3. The abutting side is provided with a protruding structure, and the protruding structure is provided with a channel for fluid to pass through; when the abutting sides of the two isolation plates 3 are abutting with each other, the protruding structures on the two isolation plates 3 are connected to each other, and heat dissipation chambers 30 are formed on the upper and lower sides of the protruding structure (i.e., on both sides in the height direction of the isolation plate 3), and the heat dissipation chambers 30 are connected to the outside through the channel.

[0036] Based on the above overall design concept, when the cell isolation assembly of this application is used to isolate the cell 2 in the battery pack, a pair of isolation plates 3 are set between two adjacent cells 2. The protrusion structure on the abutting side of the isolation plate 3 is used. When the two isolation plates 3 are respectively assembled onto the opposite side shells 20 of the two adjacent cells 2, the abutting sides of the two isolation plates 3 are connected by the protrusion structure. This allows the cell isolation assembly to achieve insulation isolation between two adjacent cells 2. At the same time, the heat dissipation chamber 30 formed between the two isolation plates 3 and the channel on the protrusion structure can form a smooth air circulation channel on the side of the cell 2. This provides good conditions for air cooling or liquid cooling of the cell 2 and is conducive to improving the insulation isolation and heat dissipation effect between the cells 2 in the battery pack.

[0037] Based on the above overall design concept, such as Figure 1 , Figure 2 and combined Figure 3 As shown, in terms of overall design, the cell isolation assembly of this embodiment mainly includes two isolation plates 3, a mounting base 4 configured for each isolation plate 3, and a jumper plate 5.

[0038] It should be noted that, based on the above overall design concept, the technical solution of this application can adopt a variety of different specific implementation structures, forms, or configuration sequences. For example, the aforementioned isolation plate 3, jumper plate 5, etc., can be integrally injection molded using materials with insulating properties such as plastic or epoxy resin; the protruding structure on the isolation plate 3 can be a long strip-shaped rib, or a columnar protrusion, etc. The specific arrangement sequence and assembly method of the mounting base 4 and the battery cell 2, the isolation plate 3 and the mounting base 4, and the isolation plate 3 and the jumper plate 5, etc., can also be flexibly adjusted. For the parts required for the implementation of the overall solution but not involved in the above overall setup, reasonable and flexible designs can be made by referring to mature setup methods in the field and the actual situation during implementation, etc., which will not be elaborated here. The specific implementation schemes described below in this embodiment are only one of the many solutions that can be formed by the above various combinations and variations. In actual implementation, those skilled in the art can make flexible adjustments and improvements based on the actual situation. Obviously, the many solutions that can be formed by the above various specific combinations and variations, as well as the specific implementation schemes of this embodiment, are all within the protection scope of this application.

[0039] Specifically, such as Figure 4 , Figure 5As shown, in some preferred exemplary embodiments, the protruding structure includes a pipe array 301 arranged along the width direction of the isolation plate 3, and the channel includes multiple pipes spaced apart on the pipe array 301; each pipe is arranged along the height direction of the isolation plate 3 to connect the heat dissipation chambers 30 on the upper and lower sides of the pipe array 301. By providing a protruding pipe array 301 on the abutting side of the isolation plate 3, the above-mentioned protruding structure is formed. It can not only abut and cooperate with the pipe array 301 on the other isolation plate 3, forming heat dissipation chambers 30 on the upper and lower sides of the pipe array 301, but also form a channel for conducting heat dissipation chambers 30 by providing pipes on the pipe array 301. Using pipes can more accurately and efficiently guide the gas or liquid used to cool the battery cell 2 into the heat dissipation chamber 30 in the battery cell isolation assembly, reducing the risk of gas or liquid leakage around the battery cell isolation assembly and improving the cooling effect.

[0040] Regarding the placement and quantity of the pipe arrangement blocks 301, there are naturally many different structural options to choose from; for example, two, three, or more sets can be set. In this embodiment, as... Figure 4 As shown, multiple pipe rows 301 are spaced apart on the contact side along the height direction of the isolation plate 3. Taking the battery cell 2 using air cooling as an example, air intake is arranged at the bottom of the battery pack, and exhaust air is discharged from the top of the battery pack. The relevant air duct structure can be integrated into the inner wall of the battery pack outer shell 1. Specifically, as... Figure 5 As shown, the piping array 301 specifically includes, from bottom to top, a lower piping array 3011, two middle piping arrays 3010, and an upper piping array 3012. The lower piping array 3011 has multiple air inlet pipes 303 serving as air intake channels; the heat dissipation chamber 30 below the air inlet pipes 303 connects to the exhaust duct at the bottom of the battery pack casing 1. The upper piping array 3012 has multiple exhaust pipes 304 serving as exhaust channels; the heat dissipation chamber 30 above the exhaust pipes 304 connects to the air inlet duct at the top of the battery pack casing 1. One of the two central pipe rows 3010 is provided with multiple internal blowing pipes 302. The internal blowing pipes 302 can be configured as right-angle bends, with one end passing through the isolation plate 3 and connecting to the mounting side of the isolation plate 3, and the other end connecting to the adjacent heat dissipation chamber 30, thereby introducing airflow from the heat dissipation chamber 30 to the mounting side. For the two paired isolation plates 3, pipes can be provided only on the pipe rows 301 of one isolation plate 3, while the corresponding pipe rows 301 on the other isolation plate 3 are not provided with pipes, but are only used for contact and mating with the corresponding pipe rows 301. Figure 5 As shown, the left isolation plate 3 has an internal blowing pipe 302 only on the upper middle pipe row 3010, while the right isolation plate 3 has an internal blowing pipe 302 only on the lower middle pipe row 3010.

[0041] By setting multiple pipe rows 301 at intervals along the height of the isolation plate 3, multiple heat dissipation chambers 30 arranged vertically can be formed between the two isolation plates 3; and, with the abutting cooperation of the multiple sets of pipe rows 301 correspondingly set on the two isolation plates 3, the abutting cooperation effect between the two isolation plates 3 is further improved, and the overall structural stability of the cell isolation assembly is improved.

[0042] To address the cooling requirements of cell 2, heat dissipation holes 305 can be provided on the isolation plate 3 to facilitate communication between the heat dissipation chamber 30 and the mounting side of the isolation plate 3. This allows the airflow blown into the mounting side by the internal blowing pipe 302 to return to the heat dissipation chamber 30 through the heat dissipation holes 305. By providing heat dissipation holes 305 on the isolation plate 3, thus connecting the mounting side and the contact side of the isolation plate 3, the fluid between cell 2 and the mounting side can be smoothly guided to the heat dissipation chamber 30, or the fluid in the heat dissipation chamber 30 can flow towards the mounting side, bringing the cooling medium closer to cell 2 and improving the cooling performance of cell 2.

[0043] Continue as Figure 3 and Figure 4 As shown, in some preferred exemplary embodiments, the cell isolation assembly of this embodiment further includes a mounting base 4 that can be pre-installed on the side housing 20, and the mounting base 4 is inserted into the mounting side. Specifically, the side housing 20 of the cell 2 in this embodiment has a mounting groove 200 formed therein, and the mounting base 4 can be inserted and fixed into the mounting groove 200. In order to ensure the heat conduction effect of the mounting base 4, the mounting base 4 is preferably made of a metal material that is conducive to heat conduction. By configuring the mounting base 4 for the isolation plate 3, the mounting base 4 can be pre-installed on the side housing 20 of the cell 2 by bonding or by means of a slot or other structure. Then, the isolation plate 3 is inserted into the mounting base 4, realizing the pre-assembly of the cell isolation assembly on the cell 2. When assembling the battery pack, the cell 2 with the pre-assembled isolation plate 3 can be directly arranged into the battery pack in sequence, which helps to reduce the assembly operations of the battery pack and thus improve the assembly efficiency.

[0044] There are, of course, various structural solutions available for the connection and assembly between the mounting base 4 and the isolation plate 3; for example, snap-fit ​​or adhesive bonding methods can be used. In this embodiment, such as... Figure 3 and combined Figure 5 As shown, the mounting base 4 and the mounting side are connected by a mortise and tenon joint. The mortise and tenon joint includes a tenon 400 on the mounting base 4 and a mortise 300 on the mounting side. The tenon 400 can be inserted into the mortise 300 along the arrangement direction of the mortise 300. The partition plate 3 and the mounting base 4 adopt a protruding structure, which not only facilitates the integral processing of the structure on the partition plate 3 and the mounting base 4, but also has the advantages of convenient insertion operation and reliable connection performance.

[0045] Based on the above configuration, in some preferred exemplary embodiments, the mortise 300 of this embodiment is arranged along the width direction of the partition plate 3 and extends through the entire partition plate 3. Since the mortise 300 is arranged along the width direction of the partition plate 3, the insertion of the partition plate 3 and the mounting base 4 can be performed along the width direction of the partition plate 3. Furthermore, both ends of the mortise 300 on the partition plate 3 can be used for the insertion of the tenon 400 on the mounting base 4, which improves the efficiency of the insertion and assembly between the partition plate 3 and the mounting base 4.

[0046] Continue as Figure 3 and combined Figure 4 As shown, the cell isolation assembly in this embodiment also includes a jumper plate 5. The top of the isolation plate 3 is provided with a slot 306, and the jumper plate 5 includes a main body 50 with two slotted plates 500 spaced apart at the bottom. When the two isolation plates 3 are engaged at their abutting sides, the two slotted plates 500 can be respectively inserted into the slots 306 on the two isolation plates 3, so that the main body 50 is connected to the top of the two isolation plates 3.

[0047] A jumper plate 5 is installed on the top of the separator plate 3, which can effectively connect the tops of a pair of separator plates 3 located between two adjacent cells 2. This improves the overall integrity and helps to make the spacing between the individual cells 2 in the battery pack more uniform and precise. Moreover, the separator plate 3 is fixed to the cell 2 through the mounting base 4, and the two separator plates 3 are connected by the jumper plate 5, so that the cells 2 in the same row are connected as a whole through the cell isolation assembly between them, which helps to improve the stability of the cell arrangement structure. The jumper plate 5 and the separator plate 3 adopt a slot-type connection, which has the advantages of convenient and efficient assembly operation.

[0048] In addition, the jumper plate 5 in this embodiment also includes two sets of protective plates 51. These two sets of protective plates 51 are respectively disposed on both sides of the width direction of the main body 50 (i.e. the thickness direction of the isolation plate 3), and the protective plates 51 have through holes 510. When the cell isolation assembly is disposed between two adjacent cells 2, the two sets of protective plates 51 are respectively fitted onto the terminal post 210 of the corresponding cell 2 through the through holes 510, thereby covering the area of ​​the cell cover plate 21 located around the terminal post 210. Protective plates 51 are provided on both sides of the main body 50 of the jumper plate 5. The protective plates 51 can effectively cover the body of the cell cover plate 21 on top of the cell 2 located in the area around the pole 210. The through holes 510 on the protective plates 51 have the same radial size as the pole 210, so that the pole 210 can pass through them. In this way, when welding circuits on the pole 210, the welding operation is less likely to bump and damage the cell cover plate 21, and the circuits welded on the pole 210 are less likely to short-circuit with the cell cover plate 21, which greatly improves the insulation and protection effect of the pole 210 and its adjacent area.

[0049] In summary, the cell isolation assembly of this embodiment, by setting a pair of isolation plates 3 between two adjacent cells 2 and utilizing the protruding structure on the abutting side of the isolation plate 3, when the two isolation plates 3 are respectively assembled onto the opposite side housings 20 of the two adjacent cells 2, the abutting sides of the two isolation plates 3 are connected by the protruding structure thereon. This allows the cell isolation assembly to achieve insulation isolation between two adjacent cells 2, while utilizing the heat dissipation chamber 30 formed between the two isolation plates 3 and the channel on the protruding structure to form a smooth air circulation channel on the side of the cell 2. This provides good conditions for air cooling or liquid cooling of the cell 2, which is beneficial to improving the insulation isolation and heat dissipation effect between the cells 2 in the battery pack.

[0050] The above description is merely a preferred embodiment of this application. Detailed explanations of configurations, examples of specific structural arrangements, and descriptions of assembly and connection methods are provided to ensure sufficient disclosure so that those skilled in the art can better implement this application, and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A cell isolation assembly for isolating two adjacent cells (2) within a battery pack, characterized in that: The cell isolation assembly includes a pair of isolation plates (3), the isolation plates (3) are shaped to conform to the side housing (20) of the cell (2), and the two sides of the isolation plates (3) are respectively configured as mounting sides for connecting the side housing (20) and abutting sides for abutting and cooperating with the other isolation plate (3); The abutting side is provided with a protruding structure, and the protruding structure is provided with a channel for fluid to pass through; when the abutting sides of the two isolation plates (3) are engaged, the protruding structures on the two isolation plates (3) are connected to each other, and heat dissipation chambers (30) are formed on the upper and lower sides of the protruding structure, and the heat dissipation chambers (30) are connected to the outside through the channel.

2. The cell isolation assembly according to claim 1, characterized in that: The protruding structure includes a pipe array (301) arranged along the width direction of the partition plate (3), and the channel includes multiple pipes spaced apart on the pipe array (301). Each of the pipes is arranged along the height direction of the isolation plate (3) to connect the heat dissipation chambers (30) on the upper and lower sides of the pipe arrangement (301).

3. The cell isolation assembly according to claim 2, characterized in that: Along the height direction of the isolation plate (3), a plurality of pipe rows (301) are provided at intervals on the abutting side.

4. The cell isolation assembly according to claim 1, characterized in that: The isolation plate (3) is provided with heat dissipation holes (305), and the heat dissipation chamber (30) is connected between the installation side and the heat dissipation chamber (30).

5. The cell isolation assembly according to claim 1, characterized in that: It also includes a mounting base (4) that can be pre-installed on the side housing (20), and the mounting base (4) is inserted into the mounting side.

6. The cell isolation assembly according to claim 5, characterized in that: The mounting base (4) and the mounting side are connected by a tenon and mortise structure; the tenon and mortise structure includes a tenon (400) on the mounting base (4) and a mortise (300) on the mounting side, and the tenon (400) can be inserted into the mortise (300) along the arrangement direction of the mortise (300).

7. The cell isolation assembly according to claim 6, characterized in that: The mortise (300) is arranged along the width direction of the partition plate (3) and extends through the entire partition plate (3).

8. The cell isolation assembly according to any one of claims 1 to 7, characterized in that: It also includes a jumper plate (5); the top of the isolation plate (3) is provided with a slot (306), and the jumper plate (5) includes a main body (50) with two slots (500) spaced apart at the bottom. When the two isolation plates (3) are engaged on the abutting side, the two slots (500) can be respectively inserted into the slots (306) on the two isolation plates (3), so that the main body (50) is connected to the top of the two isolation plates (3).

9. The cell isolation assembly according to claim 8, characterized in that: The jumper plate (5) also includes two sets of protective plates (51), which are respectively disposed on both sides of the main body (50) in the thickness direction of the isolation plate (3), and the protective plates (51) have through holes (510). When the cell isolation assembly is placed between two adjacent cells (2), the two sets of protective plates (51) are respectively fitted onto the terminal post (210) of the corresponding cell (2) through the through hole (510), thereby covering the area on the cell cover plate (21) located around the terminal post (210).

10. A battery pack, characterized in that: The battery pack uses the cell isolation assembly as described in any one of claims 1 to 9.

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