Compact cooling system (CCS) assembly and battery module

Abstract

Disclosed in the present application are a CCS assembly and a battery module. The CCS assembly is arranged at the top of a battery pack, and comprises: a plastic holder, wherein a hollowed-out groove is provided in the plastic holder; a temperature collection structure, which is arranged at the hollowed-out groove and comprises a temperature sensor and an encapsulating member sleeved outside the temperature sensor, wherein the temperature sensor is configured to collect the temperature of the battery pack, and the encapsulating member has a connection face connected to the plastic holder; and a connecting structure, which is configured to connect the connection face to the plastic holder, such that the plastic holder can restrict the temperature collection structure from detaching from the plastic holder in the axial direction of the battery pack. In the CCS assembly in the present application, the encapsulating member is used to encapsulate the temperature sensor, and is connected to the holder, and since there is a greater connecting area between the encapsulating member and the holder, the stability of the connection between the temperature collection structure and the holder is ensured.

Description

CCS components and battery modules Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a CCS component and a battery module. Background Art

[0002] In power batteries, the compact cooling system (CCS) component is electrically connected to the battery to transmit electrical signals to the battery management system (BMS). The CCS component is installed on top of the battery pack. The CCS component typically includes a plastic bracket, a flexible printed circuit board (FPC), a temperature sensor, an electrical signal sensor, and a connector. The temperature sensor collects the battery pack's temperature during use and transmits it to the BMS via the FPC to monitor the battery's status.

[0003] When the existing temperature acquisition component is installed on the plastic bracket, it is directly fixed to the bracket by adhesive. Since the temperature acquisition component is teardrop-shaped and has an arc-shaped outer surface, the contact area with the bracket is small, which easily causes the temperature acquisition component to detach from the plastic bracket. Technical Solutions

[0004] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the present application, a CCS component is provided, which is arranged on the top of the battery pack, including: a plastic bracket, which is provided with a hollow groove; a temperature collection structure, which is arranged at the hollow groove, including a temperature sensor and a packaging component arranged outside the temperature sensor, the temperature sensor is used to collect the temperature of the battery pack, and the packaging component has a connecting surface connected to the plastic bracket; a connecting structure is used to connect the connecting surface and the plastic bracket, so that the plastic bracket can limit the temperature collection structure from detaching from the plastic bracket along the axial direction of the battery pack.

[0005] In this way, by opening a hollow groove on the plastic bracket, a packaging component is arranged on the outer surface of the temperature sensor to assemble a temperature acquisition structure, and the packaging component has a connecting surface connected to the plastic bracket. When the temperature acquisition structure and the plastic bracket are installed, the connecting structure is connected between the connecting surface and the bracket. There is a larger contact area between the packaging component and the bracket, that is, a larger connection area, which ensures the connection stability of the temperature acquisition structure and the bracket. At the same time, the plastic bracket limits the detachment of the temperature acquisition structure along the axial direction of the battery pack, thereby preventing the temperature sensor from detaching from the plastic bracket, that is, avoiding the temperature sensor from experiencing abnormal temperature fluctuations.

[0006] In some embodiments, a pressing block is provided on at least one side wall of the hollow groove, and a protrusion is provided on at least one side wall of the package. The protrusion has the connecting surface, and along the axial direction of the battery pack, the protrusion is located below the pressing block, and the connecting structure is used to connect the protrusion and the pressing block.

[0007] In some embodiments, a pressing block is provided on one groove wall of the hollow groove, a guide rail is provided on the other groove wall of the hollow groove, a protrusion is provided on one side wall of the package, and a sliding groove is provided on the other side wall of the package, and the guide rail is used for the sliding groove to slide.

[0008] In some embodiments, the guide rail has a notch on the entrance side of the hollow groove, so that the length of the guide rail is smaller than the length of the sliding groove.

[0009] In some embodiments, along the installation direction of the temperature collection structure, the length of the pressing block is smaller than the length of the protrusion.

[0010] In some embodiments, along the installation direction of the temperature collection structure, the pressing block is provided in the middle of the hollow groove.

[0011] In some embodiments, a bottom wall of the bump and a bottom wall of the package are coplanar.

[0012] In some embodiments, there are gaps between the two opposite side walls of the package and the hollow groove.

[0013] In some embodiments, the connection structure includes a compressible layer and adhesive layers disposed on opposite sides of the compressible layer, and each of the adhesive layers is connected to the connection surface and the bracket, respectively.

[0014] Another aspect of the present application provides a battery module, including a battery pack; the above-mentioned CCS component, wherein the CCS component is arranged on the top of the battery pack and is electrically connected to the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic structural diagram of a CCS assembly according to an embodiment of the present application.

[0016] FIG. 2 is a schematic diagram showing the structure of the temperature collection structure in FIG. 1 that is not completely installed in the plastic bracket.

[0017] FIG3 is an exploded schematic diagram of the temperature acquisition structure in FIG1 .

[0018] FIG4 is a schematic structural diagram of a CCS assembly according to another embodiment of the present application.

[0019] FIG5 is a schematic structural diagram of the temperature acquisition structure in FIG4 within the plastic bracket.

[0020] FIG6 is an exploded schematic diagram of the temperature acquisition structure and the connection structure in FIG4 .

[0021] FIG. 7 is a schematic diagram of a connection structure according to an embodiment of the present application.

[0022] FIG8 is a schematic structural diagram of a battery module with a CCS assembly according to an embodiment of the present application.

[0023] The meanings of the reference numerals are as follows:

[0024] 100-CCS assembly, 10-plastic bracket, 11-hollow groove, 12-guide rail, 13-notch, 14-pressing block, 15-gap, 20-temperature acquisition structure, 21-package, 211-slide groove, 212-bump, 213-connection surface, 22-temperature sensor, 23-wiring harness, 30-connection structure, 31-compressible layer, 32-adhesive layer. Modes for Carrying Out the Invention

[0025] For better understanding and implementation, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0026] In the description of this application, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0028] The present application will be further described in detail below with reference to the accompanying drawings. Example

[0029] Please refer to Figures 1 to 3, which show a CCS assembly 100 provided in a first embodiment of the present application. The CCS assembly 100 is disposed on top of the battery pack and includes a plastic bracket 10, a temperature collection structure 20, and a connection structure 30 (as shown in Figure 4).

[0030] Among them, the plastic bracket 10 is provided with a hollow groove 11; the temperature collection structure 20 is provided at the hollow groove 11, including a temperature sensor 22 and a packaging member 21 arranged outside the temperature sensor 22. The temperature sensor 22 is used to collect the temperature of the battery pack, and the packaging member 21 has a connecting surface 213 connected to the plastic bracket 10; the connecting structure 30 is used to connect the connecting surface 213 and the plastic bracket 10 so that the plastic bracket 10 can limit the separation of the temperature collection structure 20 relative to the plastic bracket 10 along the axial direction of the battery pack.

[0031] The CCS assembly 100 is assembled into a temperature acquisition structure 20 by providing a hollow groove 11 in a plastic bracket 10 and disposing an encapsulation member 21 over a temperature sensor 22. The encapsulation member 21 has a connection surface 213 connected to the plastic bracket 10. When the temperature acquisition structure 20 and the plastic bracket 10 are installed, the connection structure 30 is connected between the connection surface 213 and the bracket 10. This provides a larger contact area between the encapsulation member 21 and the bracket 10, that is, a larger connection area, thereby ensuring the connection stability between the temperature acquisition structure 20 and the bracket 10. At the same time, the plastic bracket 10 restricts the temperature acquisition structure 20 from detaching in the axial direction of the battery pack, thereby preventing the temperature sensor 22 from detaching from the plastic bracket 10, that is, avoiding abnormal temperature fluctuations in the temperature sensor 22.

[0032] Specifically, the connection structure 30 of the first embodiment of the present application is a structural adhesive. After the CCS assembly 100 is installed on the top of the battery pack, the structural adhesive is injected into the CCS assembly 100. The structural adhesive penetrates between the package 21 and the bracket. After the structural adhesive solidifies, it connects between the package 21 and the bracket 10. Furthermore, the structural adhesive can further penetrate between the CCS assembly 100 and the top of the battery. In this way, the structural adhesive connects the CCS assembly 100 and the battery pack as a whole, thereby defining the position of the temperature acquisition structure 20 and preventing the temperature acquisition structure 20 from sliding relative to the plastic bracket 10.

[0033] It is understandable that since the package 21 is encapsulated outside the temperature sensor 22, it can isolate the temperature sensor 22 from water vapor and protect the temperature sensor 22. At the same time, since the temperature sensor 22 needs to accurately collect the temperature of the battery pack in real time, the package 21 of this embodiment has a certain thermal conductivity coefficient, which can transfer the heat generated in the battery pack to the temperature sensor 22, so that the temperature sensor 22 can monitor the temperature in real time.

[0034] When forming the connection surface 213 on the package 21, a pressing block 14 is provided on at least one side wall of the hollow groove 11 of this embodiment, and a protrusion 212 is provided on at least one side wall of the package 21. The protrusion 212 has a connection surface 213. Along the axial direction of the battery pack, the protrusion 212 is located below the pressing block 14. For example, the protrusion 212 is accommodated in the hollow groove 11 and is located between the pressing block 14 and the bottom wall of the hollow groove 11. The connecting structure 30 is used to connect the protrusion 212 and the pressing block 14. For example, when a connecting glue is poured as the connecting structure 30, the connecting glue is formed between the protrusion 212 and the pressing block 14. In this way, the connection between the protrusion 212 and the pressing block 14 achieves a limiting effect on the entire temperature collection structure 20.

[0035] Specifically, a pressing block 14 is provided on one wall of the hollow groove 11, a guide rail 12 is provided on the other wall of the hollow groove 11, a protrusion 212 is provided on one side wall of the package 21, and a slide groove 211 is provided on the other side wall of the package 21. The guide rail 12 can be received within the slide groove 211, so that the guide rail 12 and the slide groove 211 are slidably connected. The guide rail 12 extends parallel to the plane of the top (e.g., the top surface) of the battery pack. In this way, the temperature collection structure 20 can slide along the guide rail 12 using the sliding connection between the guide rail 12 and the slide groove 211, thereby being installed at a predetermined position in the hollow groove 11. The provision of the guide rail 12 on the plastic support 10 and the formation of the slide groove 211 on the package 21 facilitate the molding of the guide rail 12 and the slide groove 211. Furthermore, when inserting the temperature acquisition structure 20 into the hollowed-out slot 11, only the slide groove 211 on one side needs to be aligned with the guide rail 12 on one side, leaving the other side unrestricted by the guide rail 12. This allows for more free space for insertion of the temperature acquisition structure 20, improving installation efficiency. Furthermore, when the structure filling the battery pack and between the battery pack and the CCS assembly 100 expands and deforms, causing the temperature acquisition structure 20 to move in the axial direction of the battery pack, the pressing block 14 can press the protrusion 212, preventing the temperature acquisition structure 20 from moving significantly and affecting temperature data fluctuations. In other embodiments, guide rails 12 can be provided on the sidewalls of the package 21, and slide grooves 211 can be provided on the walls of the hollowed-out slot 11, as needed, to also achieve a sliding connection between the package 21 and the plastic support 10.

[0036] Furthermore, since the size of the temperature acquisition structure 20 is small, the size of the hollow groove 11 is also small. In order to facilitate the installation of the entire temperature acquisition structure 20 in the hollow groove 11, the guide rail 12 has a notch 13 on the entrance side of the hollow groove 11, so that the length of the guide rail 12 is smaller than the length of the slide groove 211. Therefore, when the entire temperature acquisition structure 20 is inserted into the hollow groove 11, there is a larger movable space at the entrance of the hollow groove 11, so that the guide rail 12 can slide into the slide groove 211 of the package 21 of the temperature acquisition structure 20.

[0037] Furthermore, in order to facilitate the production of the entire plastic bracket 10, the length of the pressing block 14 is smaller than the length of the protrusion 212 along the installation direction of the temperature collection structure 20, so that the smaller length of the pressing block 14 facilitates the molding of the plastic bracket 10. The pressing block 14 is located above the protrusion 212 and can have a restrictive effect on the temperature collection structure 20.

[0038] Furthermore, in this embodiment, the pressing block 14 is positioned in the middle of the hollowed-out slot 11, along the installation direction of the temperature collection structure 20. Specifically, the package 21 has a first end near the entrance of the hollowed-out slot 11, a second end away from the entrance, and a middle portion between the first and second ends; the pressing block 14 is positioned in this middle portion. This facilitates the molding of the pressing block 14 on the plastic bracket 10, avoiding obstruction by other structural elements of the plastic bracket 10.

[0039] In this embodiment, when the bump 212 is set, the bottom wall of the bump 212 and the bottom wall of the package 21 are coplanar. In other embodiments, the bump 212 can be set in the middle of the side wall of the package 21 as needed.

[0040] Furthermore, since the CCS assembly 100 needs to be poured with structural adhesive after being placed on top of the battery pack to connect it to the battery pack as a whole, there is a gap 15 between the opposite side walls of the package 21 and the hollow groove 11. Therefore, through the gap 15, when pouring the structural adhesive, the structural adhesive can flow through the gap 15 to the position between the CCS assembly 100 and the battery pack, so that the CCS assembly 100 and the battery pack are connected as a whole.

[0041] Please refer to Figure 3, which is a schematic diagram of the temperature acquisition structure 20. In this embodiment, the temperature sensor 22 is a drip tip temperature sensor, meaning its outer surface is curved. The drip tip temperature sensor is encapsulated within an enclosure 21. The temperature acquisition structure 20 also includes a wiring harness 23 connected to the drip tip temperature sensor. The wiring harness 23 is positioned by a block on the plastic bracket 10.

[0042] The above-mentioned CCS assembly 100 is provided with a guide rail 12 on the plastic bracket 10 and a slide groove 211 on the packaging part 21. Due to the cooperation of the slide rail 12 and the slide groove 211, the entire temperature acquisition structure 20 can only move along the plane direction parallel to the top of the battery pack. The plastic bracket 10 limits the temperature acquisition structure 20 from being separated in the axial direction of the battery pack, thereby preventing the temperature sensor 22 from being separated from the plastic bracket 10, that is, avoiding the temperature sensor 22 from experiencing abnormal temperature fluctuations. At the same time, it avoids the need to tear off the adhesive and bond the temperature sensor 22 to the battery pack when fixing the temperature sensor 22 to the plastic bracket 10 by adhesive, avoids the risk of the temperature sensor 22 and the plastic bracket 10 being separated due to aging of the adhesive, and also avoids the risk of the adhesive being peeled off by the harness 23 connected to the temperature sensor 22. At the same time, it improves the installation efficiency and reduces the labor cost. Example

[0043] Referring to Figures 4 to 7 , which illustrate a CCS assembly 100 according to a second embodiment of the present application, the CCS assembly 100 of this embodiment is substantially identical to the CCS assembly 100 of the first embodiment. The difference is that the connection structure 30 of this embodiment includes a compressible layer 31 and adhesive layers 32 disposed on opposite sides of the compressible layer 31. Each adhesive layer 32 is respectively connected to the connection surface 213 and the bracket 10. In this manner, the connection structure 30 is directly connected between the package 21 and the bracket 10. Because the connection structure 30 includes the compressible layer 31, the compressible layer 31 can be compressed. When the temperature acquisition structure 20 and the bracket 10 are mounted, the thickness of the entire connection structure 30 is greater than the distance between the bracket 10 and the temperature acquisition structure 20. Specifically, the protrusion 212 has a connection surface 213 facing the pressing block 14, and the pressing block 14 has a pressing block connection surface facing the protrusion 212. The entire connection structure 30 is disposed between the connection surface 213 of the protrusion 212 and the connection surface of the pressing block. The first adhesive layer 32 of the connection structure 30 is disposed on the connection surface 213 of the protrusion 212, and the second adhesive layer 32 is disposed on the connection surface of the pressing block. The thickness of the entire connection structure 30 refers to the distance between the outer surface of the first adhesive layer 32 and the outer surface of the second adhesive layer 32. The spacing between the bracket 10 and the temperature acquisition structure 20 refers to the distance between the connection surface 213 of the protrusion 212 and the connection surface of the pressing block. When the temperature acquisition structure 20 and the bracket 10 are installed, the compressible layer 31 is compressed so that the package 21 can be pressed against the upper surface of the battery pack and there is a force between the package 21 and the upper surface of the battery pack, so as to achieve temperature acquisition of the battery pack.

[0044] In order to ensure the connection stability between the temperature collection structure 20 and the bracket 10, there are protrusions 212 on opposite sides of the package 21, and there are pressing blocks 14 on opposite sides of the hollow groove 11. One pressing block 14 is connected to one protrusion 212 by a connecting structure 30.

[0045] Specifically, the compressible layer 31 of this embodiment is made of compressible and insulating materials such as foam and sponge. Example

[0046] In a third embodiment, the present application further provides a battery module, comprising a battery pack and the above-mentioned CCS assembly 100 .

[0047] The CCS assembly 100 is disposed on the top of the battery pack along the axial direction of the battery pack and is electrically connected to the battery pack to collect voltage and current signals of the battery pack.

[0048] In addition, after the CCS assembly 100 is placed on top of the battery pack and electrically connected to the battery pack, based on the structure of the CCS assembly 100 of the first embodiment, structural adhesive is poured on the CCS assembly 100 to enable the CSS assembly and the battery pack to form a whole.

[0049] The technical means disclosed in the present application are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of the present application, and such improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. CCS assembly, located on the top of the battery pack, characterized in that: include: A plastic bracket, wherein the plastic bracket is provided with a hollow groove; A temperature collection structure, housed in the hollow groove, comprising a temperature sensor and a packaging member sleeved outside the temperature sensor, wherein the temperature sensor is used to collect the temperature of the battery pack, and the packaging member has a connection surface connected to the plastic bracket; The connecting structure is used to connect the connecting surface and the plastic bracket and to support the temperature collection structure. The plastic bracket and the connecting structure jointly limit the separation of the temperature collection structure relative to the plastic bracket along the axial direction of the battery pack.

2. The CCS assembly according to claim 1, characterized in that: A pressing block is provided on at least one side of the groove wall of the hollow groove, and a protrusion is provided on at least one side of the side wall of the packaging component. The protrusion has the connecting surface, and along the axial direction of the battery pack, the protrusion is located below the pressing block. The connecting structure is used to connect the protrusion and the pressing block.

3. The CCS assembly according to claim 2, characterized in that: A pressing block is provided on one groove wall of the hollow groove, a guide rail is provided on the other groove wall of the hollow groove, a protrusion is provided on one side wall of the packaging component, a sliding groove is provided on the other side wall of the packaging component, and the guide rail is slidably connected with the sliding groove.

4. The CCS assembly according to claim 3, characterized in that: The guide rail has a notch on the entrance side facing the hollow groove, and the length of the guide rail is smaller than the length of the slide groove.

5. The CCS assembly according to claim 3, characterized in that: Along the installation direction of the temperature collection structure, the length of the pressing block is smaller than the length of the protrusion.

6. The CCS assembly according to claim 5, characterized in that: Along the installation direction of the temperature collection structure, the pressing block is arranged in the middle of the hollow groove.

7. The CCS assembly according to any one of claims 2 to 6, characterized in that: The bottom wall of the bump is coplanar with the bottom wall of the package.

8. The CCS assembly according to any one of claims 1 to 6, characterized in that: There are gaps between the two opposite side walls of the packaging component and the hollow groove.

9. The CCS assembly according to any one of claim 2, characterized in that: The connection structure includes a compressible layer and adhesive layers arranged on two opposite sides of the compressible layer, and each of the adhesive layers is connected to the connection surface and the bracket respectively.

10. A battery module, characterized in that: include: Battery pack; The CCS assembly as claimed in any one of claims 1 to 9, wherein the CCS assembly is disposed on top of the battery pack and is electrically connected to the battery pack.

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