Cold plate structure and battery pack

Abstract

The utility model provides a cold plate structure and a battery pack, the cold plate structure comprises a support plate, a runner plate and a main runner formed between the support plate and the runner plate, and a temperature sensing assembly is arranged on the support plate; the temperature sensing assembly comprises a shell arranged on the supporting plate and a temperature sensing unit arranged on the outer wall of the shell and used for detecting the temperature, an inner flow channel is formed in the shell, and the inner flow channel and the main flow channel are connected in series to form a cooling flow channel for cooling liquid to flow. The cold plate structure disclosed by the utility model has the effects of reducing the requirements of the installation and arrangement of the water temperature sensor on the internal space of the battery pack and facilitating the installation of the water temperature sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a cold plate structure. Simultaneously, the utility model also relates to a battery pack equipped with the cold plate structure. Background Art

[0002] The battery pack, a core component of new energy vehicles, provides the vehicle's driving power. The temperature environment within the battery pack significantly impacts its performance and reliability. To improve operational reliability, cooling is required to maintain the internal temperature within a reasonable range. Cold plate structures are often used to provide cooling for battery packs.

[0003] In related technologies, when coolant connection pipes are installed in the battery pack, water temperature sensors are often integrated into the connection pipes. With the design of a battery pack without pipes, temperature sensors are often installed on the cold plate structure to monitor the temperature of the coolant inside the battery pack at the inlet or outlet of the cold plate structure to ensure the heat exchange requirements of the battery pack under different environments. However, when there are no connecting pipes in the battery pack and the area near the inlet and outlet of the cold plate is blocked by beams or other components, it is not convenient to install the water temperature sensor on the cold plate structure. Utility Model Content

[0004] In view of this, the present invention aims to provide a cold plate structure that facilitates the arrangement and installation of a temperature unit in a battery pack.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A cold plate structure comprises a support plate and a flow channel plate, and a main flow channel formed between the support plate and the flow channel plate, wherein a temperature sensing component is provided on the support plate;

[0007] The temperature sensing component includes a shell arranged on the support plate, and a temperature sensing unit arranged on the outer wall of the shell for detecting temperature. An inner flow channel is provided in the shell, and the inner flow channel is connected in series with the main flow channel to form a cooling flow channel for the flow of coolant.

[0008] Furthermore, the main flow channel includes an inlet flow channel and an outlet flow channel; the shell is arranged corresponding to the inlet flow channel, and the inner flow channel is connected in series with the inlet flow channel, and / or the shell is arranged corresponding to the outlet flow channel, and the inner flow channel is connected in series with the outlet flow channel.

[0009] Furthermore, the inner flow channel includes a first flow channel and a second flow channel arranged at intervals, and a third flow channel connecting the first flow channel and the second flow channel; the first flow channel and the second flow channel are both arranged along the thickness direction of the support plate, and in the thickness direction of the support plate, the third flow channel is located at the top of the first flow channel and the second flow channel.

[0010] Furthermore, the temperature sensing unit is provided on the top wall of the housing and is arranged corresponding to the third flow channel, and a spacing dimension S1 between the temperature sensing unit and the third flow channel is less than 5 mm.

[0011] Furthermore, in the thickness direction of the support plate, a boss is provided on the top wall of the shell, and the temperature sensing unit is provided on the boss; and / or, the temperature sensing unit is provided on the shell through a fastener.

[0012] Furthermore, a through hole is provided on the support plate; a partition is provided on the portion of the shell located between the first flow channel and the second flow channel, the partition passes through the through hole and is connected to the flow channel plate, and divides the through hole into a first flow channel hole and a second flow channel hole arranged at intervals, the first flow channel hole is connected to the first flow channel, and the second flow channel hole is connected to the second flow channel.

[0013] Furthermore, a groove is provided on one side of the shell connected to the support plate, and the first flow channel hole and the first flow channel, as well as the second flow channel hole and the second flow channel are respectively connected through the groove; the depth dimension H of the groove is greater than 1 mm; and / or the spacing dimension S2 between the first flow channel and the second flow channel is greater than 1.2 mm.

[0014] Furthermore, the flow channel plate is provided with an abutting platform protruding toward one side of the through hole, and the partition abuts against the abutting platform.

[0015] Furthermore, the wall thickness dimension T1 of the shell is greater than 1.2 mm; and / or, the shell is provided with a flange edge connected to the support plate, and in the thickness direction of the support plate, the thickness dimension T2 of the flange edge is between 1-2.5 mm.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The cold plate structure described in the present invention is based on the coordinated arrangement of the support plate, the flow channel plate and the temperature sensing component, and forms a cooling flow channel for the flow of coolant mainly composed of an inner flow channel and a main flow channel. It can not only realize the purpose of detecting the temperature of the coolant in the battery pack by detecting the temperature of the shell by the temperature sensing unit, but also is conducive to the arrangement and installation of the temperature sensing unit compared with the cold plate structure of traditional technology, especially it is convenient to arrange the temperature sensing unit on the cold plate near the liquid inlet or outlet that is shielded by beams or other components, thereby reducing the space requirements for the installation and arrangement of the temperature sensing unit inside the battery pack, and achieving the effect of facilitating the installation of the temperature sensing unit. At the same time, compared with the method of drilling holes in the cold plate structure and placing the temperature sensing unit inside the cold plate structure for temperature detection, it can also achieve the effect of measuring the temperature of the coolant without drilling holes, avoiding the risk of leakage of the cold plate structure at the connection of the temperature sensing unit, and thus can be beneficial to improving the safety of the battery pack.

[0018] Furthermore, by providing an internal flow channel in series with the liquid inlet channel or the liquid outlet channel, the temperature sensing unit can detect the temperature of the coolant in the liquid inlet channel or the liquid outlet channel, especially the temperature of the coolant exiting the liquid inlet and the liquid outlet. By providing a first flow channel and a second flow channel along the thickness direction of the support plate, and providing a third flow channel at the top of the first flow channel and the second flow channel, such a configuration facilitates fixing the temperature sensing unit to the housing along the layout direction of the first flow channel, the second flow channel, or the third flow channel, thereby achieving multi-directional fixing of the temperature sensing unit, reducing the requirements for the internal space of the battery pack for the installation and layout of the temperature sensing unit, and facilitating the installation of the temperature sensing unit.

[0019] In addition, by setting the spacing S1 between the temperature sensing unit and the third flow channel to be less than 5mm, it is possible to ensure that the shell has a certain structural strength and is more firmly connected to the support plate, and at the same time provide a solid foundation for the fixation of the temperature sensing unit, so that the temperature sensing unit can be closer to the coolant, which is conducive to more accurate perception of the coolant temperature change, thereby meeting the structural strength and heat transfer requirements of the shell. By providing a boss on the top wall of the shell and fixing the temperature sensing unit on the boss, a height difference is formed between the surface where the temperature sensing unit is fixed and the top surface of the shell, thereby avoiding water accumulation on the flat surface where the temperature sensing unit is installed, and ensuring the service life of the temperature sensing unit. By providing fasteners to fix the temperature sensing unit on the shell, it is convenient to disassemble and assemble the temperature sensing unit, and compared with fixing the temperature sensing unit by gluing, the provision of fasteners makes the temperature sensing unit more firmly fixed.

[0020] At the same time, when a boss is provided on the top wall of the shell and the temperature sensing unit is fixed with fasteners, the provision of the boss also provides a solid installation foundation for the temperature sensing unit. By opening a through hole in the support plate and providing a partition in the shell, so that the partition passes through the through hole and is connected to the flow channel plate, the provision of the partition facilitates positioning of the shell when the shell is assembled on the support plate. At the same time, the partition divides the through hole into a first flow channel hole and a second flow channel hole. Compared with sequentially opening a first flow channel hole connected to the first flow channel and a second flow channel hole connected to the second flow channel, the number of holes opened on the support plate is reduced, simplifying the production process.

[0021] In addition, by setting the spacing S2 between the first flow channel and the second flow channel to be greater than 1.2mm, it is ensured that the partition has a certain ability to resist water pressure, so that the coolant flows from the main channel into the inner flow channel and then merges into the main channel, so that the temperature sensing unit can timely monitor the temperature change of the coolant. By setting an abutment platform protruding to one side of the through hole on the flow channel plate, it is not only convenient for the assembly of the shell, but also allows the coolant to flow into the inner flow channel of the shell after impacting the abutment platform when flowing in the main channel, so that the coolant does not directly impact the partition, thereby reducing the impact force of the coolant on the partition. By setting the wall thickness T1 of the shell to be greater than 1.2mm, the shell can have sufficient structural strength. By setting a flange edge on the shell, and setting the flange edge thickness between 1-2.5mm, the shell has good connection strength when connected to the support plate.

[0022] Another object of the present invention is to provide a battery pack, in which the cold plate structure as described above is provided.

[0023] The battery pack of the present invention reduces the requirements for the internal space of the battery pack for the installation and arrangement of the temperature sensing unit by providing the cold plate structure, thereby facilitating the installation of the temperature sensing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of the main flow channel and the inner flow channel according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic structural diagram of the through hole and the groove according to an embodiment of the present utility model;

[0027] Figure 3 This is a partial three-dimensional schematic diagram of the cold plate structure according to an embodiment of the present utility model;

[0028] Figure 4This is a partial structural diagram of the support plate according to an embodiment of the present utility model;

[0029] Figure 5 for Figure 4 Cross-sectional view at AA in the middle;

[0030] Figure 6 This is a schematic structural diagram of the temperature sensing component according to an embodiment of the present utility model;

[0031] Figure 7 for Figure 6 Bottom view of the structure shown in .

[0032] Description of reference numerals:

[0033] 1. Support plate;

[0034] 101, through hole; 101a, first flow channel hole; 101b, second flow channel hole;

[0035] 2. Runner plate;

[0036] 201, abutment platform;

[0037] 3. Mainstream channel;

[0038] 3a, liquid inlet connector; 3b, liquid outlet connector;

[0039] 4. Temperature sensing component;

[0040] 401, housing; 4011, partition; 4012, groove; 4013, flange; 402, temperature sensing unit;

[0041] 5. Internal flow channel;

[0042] 5a, first flow channel; 5b, second flow channel; 5c, third flow channel;

[0043] 6. Boss;

[0044] 7. Fasteners. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0046] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0047] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0048] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connection," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0049] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0050] Example 1

[0051] This embodiment relates to a cold plate structure, the overall structure of which is as follows: Figures 1 to 2 As shown, the cold plate structure of this embodiment includes a support plate 1 and a flow channel plate 2, and a main flow channel 3 formed between the support plate 1 and the flow channel plate 2, and a temperature sensing component 4 is provided on the support plate 1; the temperature sensing component 4 includes a shell 401 provided on the support plate 1, and a temperature sensing unit 402 for detecting the temperature provided on the outer wall of the shell 401, an inner flow channel 5 is provided in the shell 401, and the inner flow channel 5 is connected in series with the main flow channel 3 to form a cooling flow channel for the flow of coolant.

[0052] At this time, as set above, based on the coordinated setting of the support plate 1, the flow channel plate 2 and the temperature sensing component 4, and the formation of a cooling flow channel for the flow of coolant mainly composed of the inner flow channel 5 and the main flow channel 3, not only can the temperature of the shell 401 be detected by the temperature sensing unit 402 to achieve the purpose of detecting the temperature of the coolant in the battery pack, but also compared with the cold plate structure of traditional technology, it is also conducive to the arrangement and installation of the temperature sensing unit 402, especially it is convenient to arrange the temperature sensing unit 402 on the cold plate near the liquid inlet or outlet that is shielded by beams or other components, thereby reducing the space requirements for the installation and arrangement of the temperature sensing unit 402 inside the battery pack, achieving the effect of facilitating the installation of the temperature sensing unit 402, and at the same time, compared with the method of drilling holes in the cold plate structure and placing the temperature sensing unit 402 inside the cold plate structure for temperature detection, it can also achieve the effect of measuring the temperature of the coolant without drilling holes, avoiding the risk of leakage of the cold plate structure at the connection of the temperature sensing unit 402, and thus being beneficial to improving the safety of the battery pack.

[0053] Specifically, in this embodiment, Figures 1 to 2 As shown, as an exemplary structure, the wall thickness T1 of the housing 401 is greater than 1.2 mm, and can be, for example, 1.3 mm, 1.5 mm, 1.7 mm, or 2.0 mm, with a preferred thickness T1 of 1.5 mm. Furthermore, as a preferred embodiment, the housing 401 is provided with a flange 4013 connected to the support plate 1. In the thickness direction of the support plate 1, the thickness T2 of the flange 4013 is between 1 and 2.5 mm, and can be, for example, 1 mm, 1.5 mm, 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm, or 2.5 mm. The preferred thickness of the flange 4013 is 1.5 mm.

[0054] It is understood that by setting the wall thickness T1 of the housing 401 to be greater than 1.2 mm, the housing 401 has sufficient structural strength. By providing the flange 4013 on the housing 401 and setting the thickness of the flange 4013 to be between 1 and 2.5 mm, the housing 401 and the support plate 1 have good connection strength.

[0055] like Figures 1 to 3 As shown, in this embodiment, as a preferred implementation form, the main channel 3 includes a liquid inlet channel and a liquid outlet channel. The housing 401 is arranged corresponding to the liquid inlet channel, and the inner channel 5 is connected in series with the liquid inlet channel, that is, the temperature sensing component 4 is arranged corresponding to the liquid inlet channel. In this arrangement, by setting the inner channel 5 in series with the liquid inlet channel, it is convenient for the temperature sensing unit 402 to detect the temperature of the coolant in the liquid inlet channel, especially at the liquid inlet.

[0056] In this embodiment, in addition to arranging the temperature sensing component 4 in correspondence with the liquid inlet channel, as a preferred embodiment, the temperature sensing component 4 can also be arranged in correspondence with the liquid outlet channel, that is, the housing 401 is arranged in correspondence with the liquid outlet channel, and the inner channel 5 is connected in series with the liquid outlet channel. In this way, the inner channel 5 can be connected in series with the liquid outlet channel, making it easier for the temperature sensing unit 402 to detect the temperature of the coolant in the liquid outlet channel, especially at the liquid outlet.

[0057] Of course, in this embodiment, if necessary, two groups of temperature sensing units 402 can also be set up, and the shells 401 of the two groups of temperature sensing units 402 can be connected in series with the liquid inlet channel 3a and the liquid outlet channel 3b respectively. The advantage of such a setting is that it is convenient for the temperature sensing unit 402 to detect the temperature of the coolant in the liquid inlet channel 3a and the liquid outlet channel 3b, especially the temperature of the coolant at the liquid inlet and the liquid outlet, which is more conducive to improving the temperature detection accuracy.

[0058] It is worth mentioning that the temperature sensing unit 401 of this embodiment can adopt a water temperature sensor familiar to those skilled in the art, so as to ensure the temperature detection accuracy while reducing costs. At the same time, related structures not mentioned in the cooling structure of this embodiment can refer to liquid cooling plates or battery pack products familiar to those skilled in the art. For example, the main channel 3 also includes multiple flow channel units connected between the liquid inlet channel 3a and the liquid outlet channel 3b, and each flow channel unit is used to cool the battery cells in different areas of the battery pack respectively.

[0059] At the same time, a coolant joint is fixedly connected to the support plate 1. The coolant joint passes through the support plate 1 and is connected to the main channel 3. The coolant joint includes an inlet joint 3a connected to the inlet channel and an outlet joint 3b connected to the outlet channel. It is worth mentioning that when the inner channel 3 is connected to the inlet channel, Figure 2 The inner flow channel 3 shown in FIG can be regarded as a liquid inlet flow channel, and when the inner flow channel 3 is connected to the liquid outlet flow channel, as shown in FIG. Figure 2 The inner flow channel 3 shown in FIG can be regarded as a liquid outlet flow channel.

[0060] On the basis of fixing the temperature sensing unit 402 on the housing 401, as shown in FIG. Figures 1 to 2 As shown, to allow the temperature sensing unit 402 to be installed in more locations on the housing 401, the inner flow channel 5 includes a first flow channel 5a and a second flow channel 5b arranged at intervals, and a third flow channel 5c connecting the first flow channel 5a and the second flow channel 5b. The first flow channel 5a and the second flow channel 5b are both arranged along the thickness direction of the support plate 1, and the third flow channel 5c is located at the top of the first flow channel 5a and the second flow channel 5b in the thickness direction of the support plate 1.

[0061] Here, by setting the first flow channel 5a and the second flow channel 5b along the thickness direction of the support plate 1, and setting the third flow channel 5c at the top of the first flow channel 5a and the second flow channel 5b, the temperature sensing unit 402 can be conveniently fixed on the shell 401 along the layout direction of the first flow channel 5a, the second flow channel 5b or the third flow channel 5c, so that the temperature sensing unit 402 can be fixed in multiple directions and multiple temperature sensing positions, reducing the internal space requirements of the battery pack for the installation and layout of the water temperature sensor, and facilitating the installation of the temperature sensing unit 402.

[0062] Specifically, the third flow channel 5c can be opened by drilling a hole into the housing 401 from a side thereof, with the drilling path coinciding with the top ends of the first and second flow channels 5a, 5b, so that the third flow channel 5c formed by the drilling is connected to the first and second flow channels 5a, 5b. After the third flow channel 5c is opened, a plug is installed on the side wall of the housing 401. The main body of the plug is press-fitted into the third flow channel 5c, with the outer edge of the plug abutting the outer wall of the housing 401 and welded to the housing 401. The width of the outer edge is preferably no less than 2.5 mm, for example, 2.5 mm or 3 mm, to ensure the welding strength of the plug.

[0063] like Figures 1 to 6 As shown, as an practicable embodiment, the temperature sensing unit 402 is disposed on the top wall of the housing 401 and is disposed corresponding to the third flow channel 5c. The spacing dimension S1 between the temperature sensing unit 402 and the third flow channel 5c is less than 5mm. For example, it can be 4mm, 3mm, 2mm, or 1mm. The preferred spacing dimension S1 between the temperature sensing unit 402 and the third flow channel 5c is 4mm.

[0064] It can be understood that by setting the distance S1 between the temperature sensing unit 402 and the third flow channel 5c to be less than 5 mm, it is possible to ensure that the shell 401 has a certain structural strength and is more firmly connected to the support plate 1, and at the same time provide a solid foundation for fixing the temperature sensing unit 402, so that the temperature sensing unit 402 can be closer to the coolant, which is conducive to more accurate perception of the coolant temperature change, thereby meeting the structural strength and heat transfer requirements of the shell 401.

[0065] Moreover, in this embodiment, on the basis of fixing the temperature sensing unit 402 on the top wall of the shell 401, as a preferred implementation form, a boss 6 is provided on the top wall of the shell 401 in the thickness direction of the support plate 1, and the temperature sensing unit 402 is provided on the boss 6, which can form a height difference between the surface on which the temperature sensing unit 402 is fixed and the top surface of the shell 401, thereby avoiding water accumulation on the flat surface where the temperature sensing unit 402 is installed, thereby ensuring the service life of the temperature sensing unit 402.

[0066] At the same time, the temperature sensing unit 402 of this embodiment is preferably provided on the housing 401 by a fastener 7. The fastener 7 can be specifically a screw. As another optional embodiment, an elastic washer is provided between the screw nut and the temperature sensing unit 402. Here, it can be understood that by providing the fastener 7 to fix the temperature sensing unit 402 to the housing 401, it is convenient to disassemble and assemble the temperature sensing unit 402, and compared with fixing the temperature sensing unit 402 by gluing, the provision of the fastener 7 makes the fixation of the temperature sensing unit 402 more stable.

[0067] Furthermore, when a boss 6 is provided on the top wall of the housing 401 and the temperature sensing unit 402 is fixed using fasteners 7, the boss 6 also provides a solid mounting base for the temperature sensing unit 402. The height of the boss 6 can be set according to the height of surrounding components during implementation. For example, the boss 6 is preferably set 10-20 mm higher than surrounding components in the thickness direction of the support plate 1. This facilitates the arrangement of the wiring harness of the temperature sensing unit 402 on other components at a higher height than the temperature sensing unit 402, thereby collecting condensed water on the temperature sensing unit 402.

[0068] Based on the fact that the inner flow channel 5 includes the first flow channel 5a and the second flow channel 5b, the inner flow channel 5 is connected with the main flow channel 3. As a specific embodiment, Figures 1 to 4 As shown, the support plate 1 is provided with a through hole 101. A partition 4011 is provided on the portion of the housing 401 located between the first flow channel 5a and the second flow channel 5b. The partition 4011 passes through the through hole 101 and is connected to the flow channel plate 2. The partition 4011 divides the through hole 101 into a first flow channel hole 101a and a second flow channel hole 101b arranged at intervals. The first flow channel hole 101a is connected to the first flow channel 5a, and the second flow channel hole 101b is connected to the second flow channel 5b.

[0069] The main advantage of such a setting is that a through hole 101 can be opened on the support plate 1, and a partition 4011 can be set in the shell 401, so that the partition 4011 passes through the through hole 101 and is connected to the flow channel plate 2. When the shell 401 is assembled on the support plate 1, the setting of the partition 4011 facilitates the positioning of the shell 401. At the same time, the partition 4011 separates the through hole 101 into a first flow channel hole 101a and a second flow channel hole 101b. Compared with sequentially opening a first flow channel hole 101a connected to the first flow channel 5a and a second flow channel hole 101b connected to the second flow channel 5b, the number of times holes are opened on the support plate 1 is reduced, and the production process is simplified.

[0070] To make the first flow channel hole 101a communicate with the first flow channel 5a, as shown in FIG. Figures 1 to 7As shown, the second flow channel hole 101b is connected to the second flow channel 5b. A groove 4012 is provided on one side of the housing 401 connected to the support plate 1. The first flow channel hole 101a and the first flow channel 5a, as well as the second flow channel hole 101b and the second flow channel 5b, are connected respectively by the groove 4012. Here, the depth dimension H of the groove 4012 is greater than 1 mm, and can be, for example, 1.5 mm, 1.8 mm, or 2 mm. The preferred depth of the groove 4012 is 1.5 mm to achieve a better connection effect.

[0071] It is worth mentioning that in this embodiment, based on the setting of the groove 4012, the width dimension of the flange edge 4013 is preferably not less than 2.5 mm, that is, the distance from the outer wall to the inner wall of the flange edge 4013 (the side of the flange edge 4013 facing the groove 4012) is not less than 2.5 mm, for example, it can be specifically 2.5 mm, 3 mm or 3.5 mm, etc., to ensure that there is sufficient welding area and welding strength between the flange edge 4013 and the support plate 1.

[0072] As a preferred configuration, the spacing S2 between the first flow channel 5a and the second flow channel 5b in this embodiment is greater than 1.2 mm, and can be, for example, 1.3 mm, 1.5 mm, or 1.7 mm. The preferred spacing S2 between the first flow channel 5a and the second flow channel 5b is 1.3 mm. Ensuring that the spacing S2 between the first flow channel 5a and the second flow channel 5b is greater than 1.2 mm ensures that the partition 4011 has a certain degree of water pressure resistance, allowing the coolant to flow from the main channel 3 into the inner flow channel 5 and then merge into the main channel 3, allowing the temperature sensing unit 402 to promptly monitor changes in the coolant temperature.

[0073] On the basis that the partition 4011 abuts against the flow channel plate 2, as shown in FIG. Figures 1 to 2 As shown, the flow channel plate 2 is provided with an abutment platform 201 protruding toward the through hole 101, and the partition 4011 abuts against the abutment platform 201. Furthermore, the width of the abutment platform 201 is not less than the width of the partition 4011. Providing the abutment platform 201 protruding toward the through hole 101 on the flow channel plate 2 not only facilitates assembly of the housing 401 but also allows coolant flowing through the main channel 3 to strike the abutment platform 201 and then be directed into the inner flow channel 5 of the housing 401, preventing the coolant from directly striking the partition 4011 and reducing the impact force of the coolant on the partition 4011.

[0074] The cold plate structure of this embodiment can not only achieve the purpose of detecting the temperature of the coolant in the battery pack, but also facilitates the arrangement and installation of the temperature sensing unit 402 compared to the cold plate structure of the traditional technology, especially facilitating the arrangement of the temperature sensing unit 402 on the cold plate near the liquid inlet or outlet that is shielded by beams or other components. As a result, the space requirements for the installation and arrangement of the temperature sensing unit 402 inside the battery pack can be reduced, achieving the effect of facilitating the installation of the temperature sensing unit 402. At the same time, it can also achieve the effect of measuring the temperature of the coolant without drilling, avoiding the risk of leakage of the cold plate structure at the connection of the temperature sensing unit 402, and thus improving the safety of the battery pack.

[0075] Example 2

[0076] This embodiment relates to a battery pack, in which the cold plate structure as described above is provided.

[0077] The battery pack of this embodiment, by providing the cold plate structure, not only facilitates the installation of the temperature sensing unit 402 , but also helps to improve the safety of the entire pack, thereby making it more competitive in the market.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cold plate structure, characterized in that: It includes a support plate and a flow channel plate, and a main flow channel formed between the support plate and the flow channel plate, and a temperature sensing component is provided on the support plate; The temperature sensing component includes a shell arranged on the support plate, and a temperature sensing unit arranged on the outer wall of the shell for detecting temperature. An inner flow channel is provided in the shell, and the inner flow channel is connected in series with the main flow channel to form a cooling flow channel for the flow of coolant.

2. The cold plate structure according to claim 1, characterized in that: The main flow channel includes a liquid inlet flow channel and a liquid outlet flow channel; The shell is arranged corresponding to the liquid inlet channel, and the inner channel is connected in series with the liquid inlet channel, and / or the shell is arranged corresponding to the liquid outlet channel, and the inner channel is connected in series with the liquid outlet channel.

3. The cold plate structure according to claim 2, characterized in that: The inner flow channel includes a first flow channel and a second flow channel arranged at intervals, and a third flow channel connecting the first flow channel and the second flow channel; The first flow channel and the second flow channel are both arranged along the thickness direction of the support plate, and the third flow channel is located at the top of the first flow channel and the second flow channel in the thickness direction of the support plate.

4. The cold plate structure according to claim 3, characterized in that: The temperature sensing unit is disposed on the top wall of the housing and is arranged corresponding to the third flow channel, and a distance S1 between the temperature sensing unit and the third flow channel is less than 5 mm.

5. The cold plate structure according to claim 4, characterized in that: In the thickness direction of the support plate, a boss is provided on the top wall of the shell, and the temperature sensing unit is provided on the boss; and / or, The temperature sensing unit is arranged on the shell through a fastener.

6. The cold plate structure according to claim 3, characterized in that: The support plate is provided with a through hole; A partition is provided on a portion of the shell located between the first flow channel and the second flow channel. The partition passes through the through hole and is connected to the flow channel plate, and divides the through hole into first flow channel holes and second flow channel holes arranged at intervals. The first flow channel hole is connected to the first flow channel, and the second flow channel hole is connected to the second flow channel.

7. The cold plate structure according to claim 6, characterized in that: A groove is provided on one side of the housing connected to the support plate, and the first flow channel hole and the first flow channel, as well as the second flow channel hole and the second flow channel are respectively connected through the groove; The depth dimension H of the groove is greater than 1 mm; and / or the distance dimension S2 between the first flow channel and the second flow channel is greater than 1.2 mm.

8. The cold plate structure according to claim 6, characterized in that: The flow channel plate is provided with an abutting platform protruding toward one side of the through hole, and the partition abuts against the abutting platform.

9. The cold plate structure according to any one of claims 1 to 8, characterized in that: The wall thickness T1 of the housing is greater than 1.2 mm; and / or, The shell is provided with a flange edge connected to the support plate. In the thickness direction of the support plate, the thickness dimension T2 of the flange edge is between 1-2.5 mm.

10. A battery pack, characterized in that: The battery pack is provided with the cold plate structure according to any one of claims 1 to 9.

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