Thermal insulation mat, battery, vehicle

Abstract

The application provides a heat insulation pad, a battery, and a vehicle. The vehicle comprises the battery, a first liquid cooling plate of the battery, and a heat insulation pad. In the height direction of the battery, the first liquid cooling plate is located on one side of the heat insulation pad. The side of the first liquid cooling plate close to the heat insulation pad is provided with a cooling liquid injection hole. The heat insulation pad comprises a heat insulation pad body and a fixing frame accommodating the heat insulation pad body. The fixing frame comprises a first frame edge. The first frame edge of the heat insulation pad is arranged close to the first liquid cooling plate. The first frame edge is provided with a first cooling liquid channel. The first cooling liquid channel penetrates through the side of the first frame edge close to the heat insulation pad body and the side of the first frame edge away from the heat insulation pad body. The first frame edge of the heat insulation pad is located on the side of the heat insulation pad body close to the first liquid cooling plate. When the battery is in thermal runaway, the first liquid cooling plate sprays cooling liquid to the battery cell assembly. At least part of the cooling liquid flows into the enclosed area of the fixing frame of the heat insulation pad through the first cooling liquid channel on the first frame edge of the fixing frame, so as to relieve the heat spread phenomenon between the heat insulation members on both sides of the heat insulation pad in thermal runaway.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a heat insulation pad, a battery, and a vehicle. Background Technology

[0002] When a battery experiences thermal runaway, heat propagation occurs. To mitigate this phenomenon, current batteries on the market use very thick heat insulation pads. However, this increases the battery weight, fails to meet the design requirements for lightweight batteries, and also increases battery costs.

[0003] Therefore, how to mitigate the thermal runaway phenomenon without increasing the thickness of the insulation pad is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] This application aims to mitigate the thermal propagation phenomenon during thermal runaway without increasing the thickness of the insulation pad.

[0005] To achieve the above objectives, this application provides a heat insulation pad, which includes a heat insulation pad body and a fixing frame for supporting the heat insulation pad body. The fixing frame includes a first frame side, and the first frame side is provided with a first coolant channel. The first coolant channel passes through the side of the first frame side near the heat insulation pad body and the side away from the heat insulation pad body.

[0006] In one embodiment of the heat insulation pad, a plurality of first coolant channels are sequentially spaced along the length direction of the first frame edge.

[0007] In one embodiment of the heat insulation pad, the first frame edge is provided with a first through hole, the first through hole passing through the side of the first frame edge near the heat insulation pad body and the side away from the heat insulation pad body, and each first through hole forms a first coolant channel.

[0008] This application also provides a battery, the battery including a first liquid cooling plate and a heat insulation pad as described in any of the above claims. In the height direction of the battery, the first liquid cooling plate is located on one side of the heat insulation pad, the first frame edge of the heat insulation pad is located on the side of the heat insulation pad body close to the first liquid cooling plate, and the side of the first liquid cooling plate close to the heat insulation pad is provided with coolant spray holes.

[0009] One embodiment of the battery includes a cell and a casing; a heat insulation pad is disposed between adjacent cells; and / or, the heat insulation pad is disposed between the sidewalls of the cell and the casing; and / or, the heat insulation pad is disposed between the cell and a partition beam within the casing.

[0010] In one embodiment of the battery, the first coolant channel extends along the height direction of the battery through the side of the first frame edge closest to the heat insulation pad body and the side furthest from the heat insulation pad body.

[0011] In one embodiment of the battery, the cell includes an explosion-proof valve disposed on the side of the cell near the first liquid cooling plate.

[0012] In one embodiment of the battery, the battery includes a CCS assembly located between a first liquid cooling plate and a cell assembly. The CCS assembly has a plurality of second coolant channels, each second coolant channel penetrating the side of the CCS assembly near the first liquid cooling plate and the side away from the first liquid cooling plate. On a plane perpendicular to the height direction of the battery, the orthographic projection of each second coolant channel at least partially overlaps with the orthographic projection of a first coolant channel, such that each second coolant channel is correspondingly connected to a first coolant channel. The plurality of second coolant channels are divided into multiple groups, and all the second coolant channels correspondingly connected to the first cooling channels on the first frame edge of the same heat insulation pad constitute one group.

[0013] In one embodiment of the battery, the CCS assembly is provided with a plurality of second through holes, each second through hole penetrating the side of the CCS assembly near the first liquid cooling plate and the side away from the first liquid cooling plate, and each second through hole forming a second coolant channel.

[0014] In one embodiment of the battery, the CCS assembly includes an FPC, a battery cell, and an electrical isolator. The FPC and the battery cell are electrically connected. The electrical isolator is located between a first liquid cooling plate and the cell assembly. The FPC and the battery cell are located between the electrical isolator and the first liquid cooling plate. Each set of second coolant channels includes a coolant channel A and a coolant channel B. The coolant channel A includes an FPC channel segment located on the FPC and a first isolator channel segment located on the electrical isolator. The coolant channel B includes a battery cell channel segment located on the battery cell and a second isolator channel segment located on the electrical isolator.

[0015] In one embodiment of the battery, the distance between the same-side edges of the orthographic projections of the first coolant channel, the orthographic projection of the foil channel segment, and the orthographic projection of the second separator channel segment, which are connected in a plane perpendicular to the height direction of the battery, does not exceed 10 mm.

[0016] This application also provides a vehicle that includes a battery, the battery being any of the batteries described above.

[0017] The heat insulation pad provided in this application has a first coolant channel on the first frame edge of the fixing frame. The first coolant channel runs through the side of the first frame edge near the heat insulation pad body and the side away from the heat insulation pad body. Therefore, the coolant can flow from the first coolant channel on the first frame edge into the area enclosed by the fixing frame, thereby cooling the heat insulation pad body and the heat-insulated parts on both sides of the heat insulation pad within the area enclosed by the fixing frame, and also providing heat insulation. This can alleviate the heat spread phenomenon between the heat-insulated parts on both sides of the heat insulation pad during thermal runaway.

[0018] In the event of thermal runaway, the battery provided in this application allows at least a portion of the coolant sprayed from the coolant nozzles of the first liquid cooling plate to flow through the first coolant channel on the first frame edge of the fixing frame of the heat insulation pad into the area enclosed by the fixing frame. This cools the heat insulation pad body and the heat-insulated components on both sides of the heat insulation pad within the area enclosed by the fixing frame, while also providing heat insulation. This helps to mitigate the heat spread between the heat-insulated components on both sides of the heat insulation pad during thermal runaway. Therefore, the battery has better safety performance, and the requirements for the heat insulation capacity of the heat insulation pad are reduced. As a result, the thickness of the heat insulation pad does not need to be increased and can even be reduced. Consequently, the battery weight and battery cost do not increase due to mitigating the heat spread phenomenon.

[0019] The vehicle provided in this application also possesses the aforementioned technical effects due to the use of the aforementioned battery. Attached Figure Description

[0020] Figure 1 A perspective view of one embodiment of the fixing frame for the heat insulation pad provided in this application;

[0021] Figure 2 An exploded view of one embodiment of the battery provided in this application;

[0022] Figure 3 for Figure 2 A top view showing the battery assembly state with the first liquid cooling plate hidden.

[0023] Figure 4 for Figure 3 Sectional view along axis AA;

[0024] Figure 5 This is a schematic diagram showing the spacing between the same-side edges of the corresponding connected first coolant channel, bar plate channel segment, and second separator channel segment on a plane perpendicular to the battery height direction.

[0025] Figures 1-5 The annotations in the accompanying drawings are explained as follows:

[0026] 100 Heat insulation pad, 101 Fixing frame, 1011 First frame edge, 1011a First coolant channel, 102 Center frame opening;

[0027] 200 Battery, 201 First liquid cooling plate, 202 Cell assembly, 2021 Cell, 2022 Explosion-proof valve, 203 CCS assembly, 203a Second coolant channel, 2031 FPC, 2031a FPC channel section, 2032 Bar plate, 2032a Bar plate channel section, 2033 Electrical isolator, 2033a Second isolator channel section, 204 Housing. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 As shown, the heat insulation pad 100 provided in this application includes a heat insulation pad body 103 (see [link]). Figure 4 The heat insulation pad body 103 is housed within a fixed frame 101. The heat insulation pad body 103 is generally located within the enclosed area (i.e., frame opening 102) of the fixed frame 101. The fixed frame 101 includes a first frame edge 1011. The first frame edge 1011 is provided with a first coolant channel 1011a, which extends through the side of the first frame edge 1011 closest to the heat insulation pad body 103 and the side furthest from the heat insulation pad body 103. Specifically, in the illustrated embodiment, the fixed frame 101 is a rectangular frame, including four frame edges, one of which is the first frame edge 1011. The shape of the fixed frame 101 is not limited to a rectangular frame; it can be used as long as it can surround the heat insulation pad body 103. For example, it can also be a circular frame, a square frame, an elliptical frame, etc.

[0030] In application, the heat insulation pad 100 is placed between two heat-insulating components, and the opposite sides of the fixing frame 101 abut against the two heat-insulating components respectively, so that the fixing frame 101 is clamped by the two heat-insulating components, thereby stabilizing the relative position of the heat insulation pad 100 and the two heat-insulating components.

[0031] Since the first frame edge 1011 of the fixing frame 101 of the heat insulation pad 100 is provided with a first coolant channel 1011a, which runs through the side of the first frame edge 1011 near the heat insulation pad body 103 and the side away from the heat insulation pad body 103, the coolant can flow from the first coolant channel 1011a into the enclosed area of ​​the fixing frame 101, thereby cooling the heat insulation pad body 103 and the heat-insulated parts on both sides of the heat insulation pad 100 within the enclosed area of ​​the fixing frame 101, and also providing heat insulation, thus mitigating the heat spread phenomenon between the heat-insulated parts on both sides of the heat insulation pad 100 during thermal runaway.

[0032] In some embodiments, such as Figure 1As shown, a first through hole is provided on the first frame edge 1011. The first through hole passes through the side of the first frame edge 1011 near the heat insulation pad body 103 and the side away from the heat insulation pad body 103, and each first through hole forms a first coolant channel 1011a. The hole-making process is relatively simple, so it is easy to implement and the implementation cost is low to use the first through hole to form the first coolant channel 1011a.

[0033] In some embodiments, a groove is provided on at least one side of the first frame edge 1011 near the heat-insulating component. The groove extends through the side of the first frame edge 1011 near the heat-insulating pad body 103 and the side away from the heat-insulating pad body 103, forming a first coolant channel 1011a. Specifically, the two sides of the first frame edge 1011 near the two heat-insulating components are respectively the first side and the second side. A groove may be provided only on the first side of the first frame edge 1011, or only on the second side of the first frame edge 1011, or both the first and second sides of the first frame edge 1011 may have grooves.

[0034] In some embodiments, the first frame edge 1011 is a discontinuous frame edge, with a gap formed between the two discontinuous segments. The gap extends through the side of the first frame edge 1011 that is close to the heat insulation pad body 103 and the side that is far away from the heat insulation pad body 103, and the gap forms a first coolant channel 1011a.

[0035] In some embodiments, multiple first coolant channels 1011a are sequentially spaced along the length of the first frame edge 1011. "Multiple" refers to two or more channels. For example, in the illustrated embodiment, four first coolant channels 1011a are sequentially spaced along the length of the first frame edge 1011. This allows coolant to flow from the first coolant channels 1011a at different length positions of the first frame edge 1011 to the space between the two insulated components, resulting in a more uniform distribution of coolant between the two insulated components, thereby improving both cooling and insulation effects. Specifically, only one first coolant channel 1011a can be provided at the same length position of the first frame edge 1011 (as shown in the illustrated embodiment), or two or more first coolant channels 1011a can be provided, with the two or more first coolant channels 1011a at the same length position of the first frame edge 1011 sequentially spaced along the width direction of the first frame edge 1011.

[0036] like Figure 2As shown, the battery 200 provided in this application includes a first liquid cooling plate 201 and the aforementioned heat insulation pad 100. In the height direction of the battery, the first liquid cooling plate 201 is located on one side of the heat insulation pad 100, and the first frame edge 1011 of the heat insulation pad 100 is located on the side of the heat insulation pad body 103 near the first liquid cooling plate 201. The side of the first liquid cooling plate 201 near the heat insulation pad 100 has coolant spray holes, allowing coolant in the first liquid cooling plate 201 to be sprayed towards the side where the heat insulation pad 100 is located through the coolant spray holes. In use, the height direction of the battery 200 can be along the direction of gravity. In this orientation, the first liquid cooling plate 201 is located on the upper side of the heat insulation pad 100, the coolant spray holes are located on the lower side of the first liquid cooling plate 201, and the first frame edge 1011 of the heat insulation pad 100 is located on the upper side of the heat insulation pad body 103.

[0037] When the battery 200 provided in this application experiences thermal runaway, at least a portion of the coolant sprayed from the coolant nozzle of the first liquid cooling plate 201 flows from the first coolant channel 1011a on the first frame edge 1011 of the fixing frame 101 of the heat insulation pad 100 to the enclosed area of ​​the fixing frame 1011. This cools the heat insulation pad body 103 and the heat-insulated components on both sides of the heat insulation pad 100 within the enclosed area of ​​the fixing frame 1011, and also provides heat insulation. This helps to mitigate the heat spread between the heat-insulated components on both sides of the heat insulation pad 100 during thermal runaway. Therefore, the battery has better safety performance, and the requirements for the heat insulation capacity of the heat insulation pad 100 are reduced. Thus, the thickness of the heat insulation pad 100 does not need to be increased and can even be reduced. Therefore, the battery weight and battery cost do not increase due to mitigating the heat spread phenomenon.

[0038] Specifically, the battery includes a casing 204 and battery cells 2021 located within the casing 204. It should be noted that this application does not limit the battery type; for example, it can be a pouch battery, a cylindrical battery, or a prismatic battery as shown in the illustrated embodiment. In the illustrated embodiment, the casing 204 of the prismatic battery (only a portion of the casing 204 is shown in the figure) is generally rectangular. Multiple rows of battery cell assemblies 202 are arranged within the casing 204, with six rows shown in the figure. Each row of battery cell assemblies 202 is arranged sequentially along a first direction. Each row of battery cell assemblies 202 includes multiple battery cells 2021 arranged sequentially along a second direction. The first and second directions are perpendicular to each other and both perpendicular to the battery height direction. Each battery cell 2021 has two large surfaces arranged opposite each other and four small surfaces located between the two large surfaces. The large surfaces of the battery cells 2021 in the same row of battery cell assemblies 202 are arranged adjacent to each other.

[0039] In some embodiments, a heat insulation pad 100 is provided between adjacent cells 2021. For example, in the illustrated embodiment, a heat insulation pad 100 is provided between the large surfaces of adjacent cells 2021 in the same row of cell assemblies 202.

[0040] In some embodiments, a heat insulation pad 100 is provided between the battery cell 2021 and the sidewall of the housing 204.

[0041] In some embodiments, a heat insulation pad 100 is provided between the battery cell 2021 and the partition beam inside the housing 204. For example, in the illustrated embodiment, a partition beam may be provided between two adjacent rows of battery cell assemblies 202, and a heat insulation pad 100 is provided between the small facet of the battery cell 2021 and the partition beam.

[0042] In some embodiments, the first liquid cooling plate 201 is located inside the battery casing 204.

[0043] In some embodiments, the first liquid cooling plate 201 is sealed to the battery casing 204, and the first liquid cooling plate 201 and the casing 204 together form a receiving cavity for accommodating the battery cell assembly 202.

[0044] In some embodiments, the first liquid cooling plate 201 is located on the upper side of the cell assembly 202 in the direction of gravity. In this case, the coolant nozzle is located on the lower side of the first liquid cooling plate 201, and the sprayed coolant can flow downward with the help of gravity, so that a large amount of coolant flows into the enclosed area of ​​the fixing frame 101 of the heat insulation pad 100, which has a better mitigation effect on the thermal spread of the heat-insulated components on both sides of the heat insulation pad 100 during thermal runaway.

[0045] In some embodiments, the battery cell 2021 includes an explosion-proof valve 2022, which is disposed on the side of the battery cell 2021 near the first liquid cooling plate 201. For example, in the illustrated embodiment, the explosion-proof valve 2022 is disposed on the upper side of the battery cell 2021. With the explosion-proof valve 2022 disposed on the side of the battery cell 2021 near the first liquid cooling plate 201, in the event of thermal runaway, a portion of the coolant sprayed from the first liquid cooling plate 201 flows from the first coolant channel 1011a on the first frame edge 1011 of the fixing frame 101 of the heat insulation pad 100 into the enclosed area of ​​the fixing frame 101, and a portion is sprayed onto the explosion-proof valve 2022, thus cooling the thermal runaway airflow at the explosion-proof valve 2022 and mitigating the thermal propagation phenomenon at the explosion-proof valve 2022. In other words, both the coolant sprayed onto the explosion-proof valve 2022 and the coolant entering the enclosed area of ​​the fixing frame 101 originate from the first liquid cooling plate 201. Alternatively, the explosion-proof valve 2022 of the battery cell 2021 can also be set on the side of the battery cell 2021 away from the first liquid cooling plate 201, and a second liquid cooling plate can be set on the side of the battery cell 2021 away from the first liquid cooling plate 201. Coolant spray holes are set on the side of the second liquid cooling plate close to the battery cell 2021. In this way, the coolant sprayed from the explosion-proof valve 2022 comes from the second liquid cooling plate, and the coolant entering the enclosed area of ​​the fixed frame 101 comes from the first liquid cooling plate 201.

[0046] In some embodiments, the battery 200 includes a CCS assembly 203, where CCS stands for CellsContact System. The CCS assembly 203 is located between the first liquid cooling plate 201 and the cell assembly 202. The CCS assembly 203 has multiple second coolant channels 203a, each channel penetrating both the side of the CCS assembly 203 closest to and furthest from the first liquid cooling plate 201. On a plane perpendicular to the battery height, the orthographic projection of each second coolant channel 203a at least partially overlaps with the orthographic projection of a first coolant channel 1011a, ensuring that each second coolant channel 203a is correspondingly connected to a first coolant channel 1011a. The multiple second coolant channels 203a are divided into multiple groups, with all second coolant channels 203a correspondingly connected to the first coolant channels 1011a on the first frame edge 1011 of the same heat insulation pad 100 forming one group. For example... Figure 3 In the diagram, each dashed straight line has two sets of second coolant channels 203a, totaling eight sets. These eight sets of second coolant channels 203a are connected to corresponding first coolant channels 1011a on the first frame edges 1011 of the eight heat insulation pads 100. During thermal runaway, a portion of the coolant ejected from the first liquid cooling plate 201 sequentially enters the enclosed area of ​​the fixing frame 101 of the heat insulation pad 100 via the corresponding connected second coolant channels 203a and first coolant channels 1011a.

[0047] In some embodiments, such as Figure 3 As shown, the CCS assembly 203 has multiple second through holes, each second through hole penetrating both the side of the CCS assembly 203 closest to the first liquid cooling plate 201 and the side furthest from the first liquid cooling plate 201, forming a second coolant channel 203a. The hole-making process is relatively simple, so using second through holes to form second coolant channels is easy to implement and has low implementation costs. Alternatively, the CCS assembly 203 may have grooves or seams, which form the second coolant channel 203a.

[0048] In some embodiments, such as Figure 3As shown, the CCS assembly 203 includes an FPC 2031, a stripper 2032, and an electrical isolator 2033. The FPC 2031 is a printed circuit board, short for Flexible Printed Circuit. The FPC 2031 and the stripper 2032 are electrically connected. Specifically, in the illustrated embodiment, each row of battery cell assemblies 202 has two rows of strippers 2032 above it, and the FPC 2031 is approximately located between the two rows of strippers 2032, electrically connected to each of them. The electrical isolator 2033 is located between the first liquid cooling plate 201 and the battery cell assembly 202. The FPC 2031 and the stripper 2032 are located between the electrical isolator 2033 and the first liquid cooling plate 201. Specifically, in the illustrated embodiment, the electrical isolator 2033 is located below the first liquid cooling plate 201, and the FPC 2031 and the stripper 2032 are located above the first liquid cooling plate 201. The electrical isolation component 2033 can specifically be an electrical isolation plate or an electrical isolation membrane.

[0049] Each group of second coolant passages 203a includes coolant passage A and coolant passage B. That is, part of the second coolant passages 203a in each group is coolant passage A, and part of the second coolant passages 203a is coolant passage B.

[0050] The A coolant channel includes an FPC channel segment 2031a disposed on FPC 2031 and a first isolation channel segment disposed on electrical isolator 2033. Specifically, FPC channel segment 2031a extends through the side of FPC 2031 closest to the first liquid cooling plate 201 and the side furthest from the first liquid cooling plate 201, and the first isolation channel segment extends through the side of electrical isolator 2033 closest to FPC 2031 and the side furthest from FPC 2031. On a plane perpendicular to the battery height direction, the orthographic projections of the FPC channel segment 2031a and the first isolation channel segment of the same A coolant channel at least partially overlap, such that the FPC channel segment 2031a and the first isolation channel segment of the same A coolant channel are correspondingly connected.

[0051] The B-type coolant channel includes a plate channel segment 2032a disposed on the plate 2032 and a second isolation member channel segment 2033a disposed on the electrical isolator 2033. Specifically, the plate channel segment 2032a extends through the side of the plate 2032 closest to the first liquid cooling plate 201 and the side furthest from the first liquid cooling plate 201, and the second isolation member channel segment 2033a extends through the side of the electrical isolator 2033 closest to the plate 2032 and the side furthest from the plate 2032. On a plane perpendicular to the battery height direction, the orthographic projections of the plate channel segment 2032a and the second isolation member channel segment 2033a of the same B-type coolant channel at least partially overlap, such that the plate channel segment 2032a and the second isolation member channel segment 2033a of the same B-type coolant channel are correspondingly connected.

[0052] Each group of second coolant channels 203a includes the aforementioned coolant channel A and coolant channel B. This design allows some sections of the second coolant channels 203a to be located on the FPC 2031 and some sections to be located on the platen 2032. This avoids excessive channels on the FPC 2031 and platen 2032 affecting strength. It also allows the coolant sprayed from the first liquid cooling plate 201 to flow sequentially through the FPC 2031, the electrical isolator 2033, and the first frame edge 1011 to the large surface of the adjacent cell 2021, and also sequentially through the platen 2032, the electrical isolator 2033, and the first frame edge 1011 to the large surface of the adjacent cell 2021. This results in a more uniform distribution of coolant between the large surfaces of the adjacent cells 2021, thereby improving the cooling and heat insulation effects.

[0053] In some embodiments, on a plane perpendicular to the battery height direction, the distance between the same-side edges of the orthographic projections of the first coolant channel 1011a, the orthographic projection of the foil channel segment 2032a, and the orthographic projection of the second separator channel segment 2033a, which are connected to each other, does not exceed 10 mm. That is, the distance between the same-side edges of the orthographic projections of the first coolant channel 1011a and its corresponding foil channel segment 2032a on a plane perpendicular to the battery height direction is less than or equal to 10 mm; the distance between the same-side edges of the orthographic projections of the foil channel segment 2032a and its corresponding second separator channel segment 2033a on a plane perpendicular to the battery height direction is less than or equal to 10 mm. In the illustrated embodiments, as shown... Figure 5 As shown, S is a plane perpendicular to the height direction of the battery. The first coolant channel 1011a, the plate channel segment 2032a, and the second separator channel segment 2033a are all straight holes perpendicular to the plane S. L1 is the distance between the same side edges of the orthographic projections of the corresponding connected first coolant channel 1011a and plate channel segment 2032a on the plane S. L2 is the distance between the same side edges of the orthographic projections of the corresponding connected plate channel segment 2032a and second separator channel segment 2033a on the plane S.

[0054] There is usually no gap or a very small gap between the side of the plate 2032 away from the first liquid cooling plate 201 and the side of the electrical isolator 2033 near the first liquid cooling plate 201, and between the side of the electrical isolator 2033 away from the first liquid cooling plate 201 and the side of the first frame edge 1011 of the heat insulation pad 100 near the first liquid cooling plate 201. Therefore, if the orthographic projections of the first coolant channel 1011a on the first frame edge 1011, the plate channel segment 2032a on the plate 2032, and the second isolator channel segment 2033a on the electrical isolator 2033 on the plane perpendicular to the battery height direction are offset by a large distance, it will affect their smooth connection and cause the coolant to flow through them with great resistance. Therefore, the same-side spacing of their orthographic projections on the plane perpendicular to the battery height direction is controlled to not exceed 10mm, for example, it can be 1mm, 3mm, 5mm, 8mm, or 10mm, so as to ensure their smooth connection and reduce the resistance of the coolant flowing through them.

[0055] This application also provides a vehicle that includes the battery 200 described above. The vehicle may be a pure electric vehicle or a hybrid vehicle.

[0056] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A heat insulation pad, characterized in that, The heat insulation pad (100) includes a heat insulation pad body (103) and a fixing frame (101) for supporting the heat insulation pad body (103). The fixing frame (101) includes a first frame edge (1011), and the first frame edge (1011) is provided with a first coolant channel (1011a). The first coolant channel (1011a) passes through the side of the first frame edge (1011) near the heat insulation pad body (103) and the side away from the heat insulation pad body (103).

2. The heat insulation pad according to claim 1, characterized in that, Along the length of the first frame edge (1011), a plurality of first coolant channels (1011a) are arranged at intervals.

3. The heat insulation pad according to claim 1 or 2, characterized in that, The first frame edge (1011) is provided with a first through hole, which penetrates the side of the first frame edge (1011) close to the heat insulation pad body (103) and the side away from the heat insulation pad body (103). Each first through hole forms a first coolant channel (1011a).

4. A battery, characterized in that, The battery (200) includes a first liquid cooling plate (201) and a heat insulation pad (100) as described in any one of claims 1-3. In the height direction of the battery, the first liquid cooling plate (201) is located on one side of the heat insulation pad (100), and the first frame edge (1011) of the heat insulation pad (100) is located on the side of the heat insulation pad body (103) close to the first liquid cooling plate (201). The side of the first liquid cooling plate (201) close to the heat insulation pad (100) is provided with coolant spray holes.

5. The battery according to claim 4, characterized in that, The battery includes a cell (2021) and a casing (204). The heat insulation pad (100) is disposed between adjacent battery cells (2021); and / or, The heat insulation pad (100) is disposed between the battery cell (2021) and the sidewall of the outer casing (204); and / or, The heat insulation pad (100) is disposed between the battery cell (2021) and the partition beam inside the outer casing (204).

6. The battery according to claim 4, characterized in that, The first coolant channel (1011a) extends along the height direction of the battery through the side of the first frame edge (1011) near the heat insulation pad body (103) and the side away from the heat insulation pad body (103).

7. The battery according to claim 4, characterized in that, The battery cell (2021) includes an explosion-proof valve (2022), which is disposed on the side of the battery cell (2021) near the first liquid cooling plate (201).

8. The battery according to claim 4, characterized in that, The battery (200) includes a CCS module (203), which is located between the first liquid cooling plate (201) and the cell assembly (202). The CCS module (203) is provided with a plurality of second coolant channels (203a), each of which penetrates the side of the CCS module (203) near the first liquid cooling plate (201) and the side away from the first liquid cooling plate (201). On a plane perpendicular to the height direction of the battery, each of the second coolant channels (203a) has a certain number of channels. The orthographic projection of the second coolant channel (203a) at least partially overlaps with the orthographic projection of one of the first coolant channels (1011a), such that each second coolant channel (203a) is correspondingly connected to one of the first coolant channels (1011a). The plurality of second coolant channels (203a) are divided into multiple groups, and all the second coolant channels (203a) that are correspondingly connected to the first cooling channel on the first frame edge (1011) of the same heat insulation pad (100) are in one group.

9. The battery (200) according to claim 8, characterized in that, The CCS assembly (203) is provided with a plurality of second through holes, each second through hole penetrating the side of the CCS assembly (203) near the first liquid cooling plate (201) and the side away from the first liquid cooling plate (201), and each second through hole forms a second coolant channel (203a).

10. The battery according to claim 8 or 9, characterized in that, The CCS assembly (203) includes an FPC (2031), a battery strip (2032), and an electrical isolator (2033). The FPC (2031) and the battery strip (2032) are electrically connected. The electrical isolator (2033) is located between the first liquid cooling plate (201) and the cell assembly (202). The FPC (2031) and the battery strip (2032) are located between the electrical isolator (2033) and the first liquid cooling plate (201). Each set of second coolant channels (203a) includes a coolant channel A and a coolant channel B. The coolant channel A includes an FPC channel segment (2031a) located in the FPC (2031) and a first isolation channel segment located in the electrical isolator (2033). The coolant channel B includes a bar channel segment (2032a) located in the bar plate (2032) and a second isolation channel segment (2033a) located in the electrical isolator (2033).

11. The battery according to claim 6, characterized in that, On a plane perpendicular to the height of the battery, the distance between the same-side edges of the orthographic projections of the first coolant channel (1011a), the orthographic projection of the foil channel segment (2032a), and the orthographic projection of the second separator channel segment (2033a) shall not exceed 10 mm.

12. A vehicle comprising a battery, characterized in that, The battery is the battery (200) according to any one of claims 4-11.

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