Cooling plate assembly and battery pack

Abstract

The utility model discloses a cooling plate assembly and a battery pack, the cooling plate assembly comprises a plate body, the plate body is provided with a cooling channel, an inlet and an outlet, the inlet and the outlet are communicated with the cooling channel, the cooling channel comprises a first channel and a second channel, the inlet is directly communicated with one end of the first channel, and the outlet is directly communicated with one end of the second channel; the temperature detection assemblies are arranged at the end, close to the inlet, of the first channel and / or the end, close to the outlet, of the second channel. According to the cooling plate assembly disclosed by the utility model, when the liquid inlet pipe and the liquid outlet pipe are positioned outside the battery pack, the temperature detection assembly can still be positioned in the battery pack, so that the risk of liquid leakage in the battery pack can be reduced, the interference to the temperature detection assembly can be reduced, the failure probability is reduced, and the service life of the temperature detection assembly is prolonged; therefore, temperature control of the battery pack is more accurate, and normal work of the battery pack is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a cooling plate assembly and a battery pack. Background Art

[0002] In the current power battery cooling and heating systems, water temperature sensors are mostly arranged on internal pipes. However, arranging water pipes inside the battery pack poses a risk of leakage. To avoid this problem, some solutions have eliminated the pipe solution and arranged the water temperature sensor outside the pack. However, the environment outside the pack is relatively harsh, and the risk of water temperature sensor failure is relatively high. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a cooling plate assembly, which can reduce the risk of leakage in the battery pack, reduce the interference of the temperature detection assembly, reduce the failure probability, and increase the life of the temperature detection assembly, thereby making the temperature control of the battery pack more accurate and facilitating the normal operation of the battery pack.

[0004] The utility model also provides a battery pack, comprising the above-mentioned cooling plate assembly.

[0005] According to an embodiment of the utility model, the cooling plate assembly includes: a plate body, the plate body having a cooling channel and an inlet and an outlet connected to the cooling channel, the cooling channel including a first channel and a second channel, the inlet is directly connected to one end of the first channel, and the outlet is directly connected to one end of the second channel; a temperature detection component, the temperature detection component is provided at one end of the first channel close to the inlet and / or at one end of the second channel close to the outlet.

[0006] According to the cooling plate assembly of the embodiment of the utility model, a first channel and a second channel are arranged on the plate body, and an inlet is arranged to be directly connected with one end of the first channel, and an outlet is arranged to be directly connected with one end of the second channel, and a temperature detection assembly is arranged at one end of the first channel close to the inlet and / or one end of the second channel close to the outlet, so that the temperature detection assembly is arranged on the plate body, avoiding the temperature detection assembly changing with the position change of the liquid inlet pipe and the liquid outlet pipe, so that when the liquid inlet pipe and the liquid outlet pipe are located outside the battery pack, the temperature detection assembly can still be located inside the battery pack, thereby reducing the risk of leakage in the battery pack, reducing the interference to the temperature detection assembly, reducing the failure probability, and increasing the life of the temperature detection assembly, thereby making the temperature control of the battery pack more accurate, which is beneficial to the normal operation of the battery pack.

[0007] In some embodiments of the utility model, the temperature detection component is arranged on one side of the plate body in the thickness direction, and a temperature measuring opening is provided on the surface of one side in the thickness direction of the plate body. The temperature detection component has a boss on the side facing the plate body, and the boss extends into the temperature measuring opening, and the outer peripheral wall of the boss is in contact with the inner peripheral wall of the temperature measuring opening.

[0008] In some embodiments of the present invention, the temperature detection component is welded to the plate body, and the temperature detection component has an annular groove on a side facing the plate body, the annular groove is arranged around the boss, and the annular groove is used to fill solder.

[0009] In some embodiments of the present invention, the temperature detection component includes: a base, which is connected to the plate body, and the end of the base away from the plate body has a groove; a sensor body, at least a portion of the sensor body is disposed in the groove; and thermally conductive adhesive, which is disposed in the groove and filled between the sensor body and the bottom wall of the groove.

[0010] In some embodiments of the utility model, the groove includes a first groove and a second groove arranged along the thickness direction of the plate body, the first groove is arranged close to the plate body relative to the second groove, the cross-sectional area of ​​the second groove is larger than the cross-sectional area of ​​the first groove, the sensor body passes through the second groove and is partially located in the first groove, the thermal conductive adhesive is filled in the first groove, and a sealing ring is provided between the inner circumferential wall of the second groove and the outer circumferential wall of the sensor body.

[0011] In some embodiments of the present invention, the sensor body has a connecting plate, the connecting plate is located on the side of the base away from the plate body and is connected to the base by a fastener. In some embodiments of the present invention, the temperature detection assembly has a connecting terminal at one end away from the plate body, and the cooling plate assembly further includes: a connecting harness, one end of the connecting harness is suitable for connecting to the connecting terminal, and the other end is used to connect to the battery manager of the battery pack.

[0012] In some embodiments of the present invention, the cooling plate assembly further includes: a wire harness fixing assembly, which is disposed at one end of the plate body in the thickness direction where the temperature detection assembly is disposed, and is used to fix the connecting wire harness.

[0013] In some embodiments of the utility model, the wiring harness fixing assembly includes a wiring harness bracket and a wiring harness tie, the wiring harness bracket is multiple, the wiring harness ties are multiple and correspond one to one with the wiring harness bracket, the wiring harness bracket has a through hole, the wiring harness tie is passed through the through hole for fixing the connecting wiring harness to the wiring harness bracket, and / or the wiring harness bracket is connected to multiple wiring harness ties spaced apart along the extension direction of the wiring harness bracket, and the wiring harness tie forms a through hole for fixing the connecting wiring harness to the wiring harness bracket.

[0014] According to the battery pack of the embodiment of the utility model, it includes: a box body; the above-mentioned cooling plate assembly, which is arranged in the box body; a liquid inlet pipe and a liquid outlet pipe, one end of the liquid inlet pipe is connected to the inlet, and one end of the liquid outlet pipe is connected to the outlet, and the liquid inlet pipe and the liquid outlet pipe are arranged outside the box body.

[0015] According to the battery pack of the embodiment of the utility model, by setting the above-mentioned cooling plate assembly, a first channel and a second channel are set on the plate body, and an inlet is set to be directly connected with one end of the first channel, and an outlet is set to be directly connected with one end of the second channel, and a temperature detection assembly is set at the end of the first channel close to the inlet and / or the end of the second channel close to the outlet, so that the temperature detection assembly is arranged on the plate body, avoiding the temperature detection assembly changing with the position change of the liquid inlet pipe and the liquid outlet pipe, so that when the liquid inlet pipe and the liquid outlet pipe are located outside the battery pack, the temperature detection assembly can still be located inside the battery pack, thereby reducing the risk of leakage in the battery pack, reducing the interference to the temperature detection assembly, reducing the failure probability, and increasing the life of the temperature detection assembly, so that the temperature control of the battery pack is more accurate, which is beneficial to the normal operation of the battery pack.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a bottom view of a cooling plate assembly according to an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 is a three-dimensional diagram of a cooling plate assembly according to an embodiment of the utility model;

[0021] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0022] Figure 5 yes Figure 3 Enlarged view of point C in the middle;

[0023] Figure 6 is a side view of a cooling plate assembly according to an embodiment of the utility model;

[0024] Figure 7 yes Figure 6 Sectional view at DD in the middle;

[0025] Figure 8 yes Figure 7 Enlarged view of point E in the middle;

[0026] Fig. 9 It is a stereoscopic view of the cooling plate assembly according to another perspective of the embodiment of the utility model.

[0027] Reference numerals:

[0028] 10. Cooling plate assembly;

[0029] 1. Plate body; 11. Inlet; 12. Outlet; 13. Temperature measurement opening; 14. Cooling channel; 141. First channel; 142. Second channel; 15. Flow channel plate; 16. Closing plate; 17. Inspection port;

[0030] 2. Temperature detection assembly; 21. Base; 211. Groove; 2111. First groove; 2112. Second groove; 2113. Sealing ring; 22. Sensor body; 221. Connecting plate; 23. Boss; 24. Connecting terminal; 25. Annular groove;

[0031] 3. Connect the wiring harness;

[0032] 4. Wire harness fixing assembly; 41. Wire harness bracket; 411. Perforation; 42. Wire harness tie; 421. Via hole. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference below Figure 1-Figure 9 A cooling plate assembly 10 according to an embodiment of the present invention is described.

[0037] like Figure 1-Figure 9 As shown, the cooling plate assembly 10 according to the embodiment of the utility model includes: a plate body 1 and a temperature detection assembly 2.

[0038] Specifically, refer to Figure 1 , Figure 2 and Fig. 9 As shown, the plate body 1 has a cooling channel 14 and an inlet 11 and an outlet 12 connected to the cooling channel 14. The cooling channel 14 includes a first channel 141 and a second channel 142. The inlet 11 is directly connected to one end of the first channel 141, and the outlet 12 is directly connected to one end of the second channel 142.

[0039] It can be understood that by the flow of refrigerant in the cooling channel 14, heat exchange can be achieved between the cooling plate assembly 10 and the internal structure of the battery pack (such as battery modules and battery cells, etc.), thereby achieving cooling and heating of the battery pack, so that the battery pack can work normally, and the first channel 141 and the second channel 142 are connected. Since the inlet 11 is directly connected to one end of the first channel 141, and the outlet 12 is directly connected to one end of the second channel 142, the connection between the inlet 11 and the outlet 12 is achieved, so that the refrigerant can enter from the inlet 11, pass through the first channel 141 and the second channel 142, and finally flow out from the outlet 12, so that the refrigerant can circulate.

[0040] Furthermore, if Figure 1 and Figure 2 As shown, a temperature detection component 2 is provided at one end of the first channel 141 close to the inlet 11 and / or at one end of the second channel 142 close to the outlet 12. The temperature detection component 2 can detect the refrigerant temperature at the inlet 11 or the refrigerant temperature at the outlet 12, thereby facilitating the control of the refrigerant temperature at the inlet 11 or the refrigerant temperature at the outlet 12 within a suitable range, thereby facilitating the normal operation of the battery pack.

[0041] Among them, the temperature detection component 2 is arranged on the board body 1, and the board body 1 is located inside the battery pack. Compared with the temperature detection component being located outside the battery pack, the temperature detection component 2 is less subject to interference, which reduces the failure probability and increases the life of the temperature detection component 2, thereby making the temperature control of the battery pack more accurate and facilitating the normal operation of the battery pack.

[0042] In addition, when the liquid inlet and outlet pipes are located outside the battery pack, the risk of leakage in the battery pack can be reduced. At this time, since the temperature detection component 2 is arranged on the plate body 1, the temperature detection component 2 can still be located in the battery pack and will not change with the change of the position of the liquid inlet and outlet pipes. Compared with the temperature detection component being arranged on the liquid inlet and outlet pipes, and the liquid inlet and outlet pipes being located outside the battery pack, the interference to the temperature detection component 2 can be reduced, the failure probability is reduced, and the life of the temperature detection component 2 is increased, thereby making the temperature control of the battery pack more accurate, which is beneficial to the normal operation of the battery pack.

[0043] Therefore, by arranging the temperature detection component 2 on the plate body 1, when the liquid inlet pipe and the liquid outlet pipe are located outside the battery pack, it can not only reduce the risk of leakage in the battery pack, but also reduce the interference to the temperature detection component 2, thereby reducing the failure probability and increasing the life of the temperature detection component 2, thereby making the temperature control of the battery pack more accurate and facilitating the normal operation of the battery pack.

[0044] For example, Figure 1 and Figure 2In the example shown, both the end of the first channel 141 close to the inlet 11 and the end of the second channel 142 close to the outlet 12 are provided with a temperature detection component 2, so that the temperature detection is accurate and the safety and reliability of the battery pack are improved. However, the present invention is not limited to this, and only the end of the first channel 141 close to the inlet 11 may be provided with a temperature detection component 2, or only the end of the second channel 142 close to the outlet 12 may be provided with a temperature detection component 2.

[0045] Preferably, Figure 8 and Fig. 9 As shown, the plate body 1 includes a sealing plate 16 and a flow channel plate 15. The flow channel plate 15 is arranged on a side of the sealing plate 16 away from the temperature detection component 2. A cooling channel 14 is formed between the sealing plate 16 and the flow channel plate 15, thereby reducing the setting of pipelines and making the structure simple. At the same time, the combination of the sealing plate 16 and the flow channel plate 15 has good integrity compared to setting multiple pipelines, thereby reducing the risk of leakage and making the battery pack safe and reliable.

[0046] According to the cooling plate assembly 10 of the utility model embodiment, a first channel 141 and a second channel 142 are arranged on the plate body 1, and an inlet 11 is arranged to be directly connected with one end of the first channel 141, and an outlet 12 is arranged to be directly connected with one end of the second channel 142, and a temperature detection assembly 2 is arranged at one end of the first channel 141 close to the inlet 11 and / or one end of the second channel 142 close to the outlet 12, so that the temperature detection assembly 2 is arranged on the plate body 1, and it is avoided that the temperature detection assembly 2 changes with the position change of the liquid inlet pipe and the liquid outlet pipe, so that when the liquid inlet pipe and the liquid outlet pipe are located outside the battery pack, the temperature detection assembly 2 can still be located in the battery pack, thereby reducing the risk of leakage in the battery pack, reducing the interference to the temperature detection assembly 2, reducing the failure probability, and increasing the life of the temperature detection assembly 2, so that the temperature control of the battery pack is more accurate, which is conducive to the normal operation of the battery pack.

[0047] In some embodiments of the present invention, Figure 2 and Figure 8 As shown, the temperature detection component 2 is arranged on one side of the plate body 1 in the thickness direction, and a temperature measuring opening 13 is provided on the surface of one side of the plate body 1 in the thickness direction. The temperature detection component 2 has a boss 23 on the side facing the plate body 1, and the boss 23 extends into the temperature measuring opening 13, and the outer peripheral wall of the boss 23 is in contact with the inner peripheral wall of the temperature measuring opening 13.

[0048] It can be understood that by extending the boss 23 into the temperature measuring opening 13, preliminary positioning between the temperature detection component 2 and the plate body 1 can be achieved, so that the subsequent connection work between the temperature detection component 2 and the plate body 1 can be carried out, thereby improving production efficiency. In addition, the boss 23 extends into the temperature measuring opening 13, and the outer peripheral wall of the boss 23 and the inner peripheral wall of the temperature measuring opening 13 fit together, thereby avoiding the movement of the temperature detection component 2 relative to the plate body 1 along the radial direction of the temperature measuring opening 13, thereby improving the connection reliability between the temperature detection component 2 and the plate body 1.

[0049] The cross-sectional shape of the temperature measuring opening 13 can be any shape, and the cross-sectional shape of the boss 23 can be a corresponding shape, such as a circle and a polygon.

[0050] In some embodiments of the present invention, Figure 6-Figure 8 As shown, the temperature detection component 2 is connected to the plate body 1 by welding, such as brazing, etc., and the temperature detection component 2 has an annular groove 25 on the side facing the plate body 1. The annular groove 25 is arranged around the boss 23, and the annular groove 25 is used to fill the solder. As a result, the welding between the temperature detection component 2 and the plate body 1 is facilitated, and the connection reliability between the temperature detection component 2 and the plate body 1 is improved. At the same time, because the solder is located in the annular groove 25, the end face of the temperature detection component 2 facing the plate body 1 can be fitted with the end face of the plate body 1 facing the temperature detection component 2, thereby further improving the connection reliability between the temperature detection component 2 and the plate body 1.

[0051] In some embodiments of the present invention, Figure 6-Figure 8 As shown, the temperature detection component 2 includes: a base 21, a sensor body 22 and thermally conductive adhesive, the base 21 is connected to the board body 1, and the end of the base 21 away from the board body 1 has a groove 211; at least part of the sensor body 22 is arranged in the groove 211; it can be understood that by at least part of the sensor body 22 being arranged in the groove 211, the sensor body 22 can be closer to the board body 1, thereby improving the detection precision and accuracy of the sensor body 22, which is further beneficial to control the refrigerant temperature at the inlet 11 or detect the refrigerant temperature at the outlet 12 to be within a suitable range, thereby facilitating the normal operation of the battery pack.

[0052] Furthermore, a thermally conductive adhesive (not shown) is disposed in the groove 211 and filled between the sensor body 22 and the bottom wall of the groove 211. The thermally conductive adhesive can better transfer the heat on the board body 1 to the sensor body 22, thereby improving the detection precision and accuracy of the sensor body 22, which is further beneficial to control the refrigerant temperature at the inlet 11 or detect the refrigerant temperature at the outlet 12 to be within an appropriate range, thereby facilitating the normal operation of the battery pack.

[0053] In some embodiments of the present invention, Figure 6-Figure 8 As shown, the groove 211 includes a first groove 2111 and a second groove 2112 arranged along the thickness direction of the plate body 1, the first groove 2111 is arranged close to the plate body 1 relative to the second groove 2112, the cross-sectional area of ​​the second groove 2112 is larger than the cross-sectional area of ​​the first groove 2111, the sensor body 22 passes through the second groove 2112 and is partially located in the first groove 2111, the thermal conductive glue is filled in the first groove 2111, and a sealing ring 2113 is provided between the inner circumferential wall of the second groove 2112 and the outer circumferential wall of the sensor body 22.

[0054] It can be understood that the sensor body 22 first passes through the second groove 2112, and then partially locates in the first groove 2111. The cross-sectional area of ​​the second groove 2112 is larger than the cross-sectional area of ​​the first groove 2111, so that it is convenient for the sensor body 22 to enter the second groove 2112. At the same time, the cross-sectional area of ​​the second groove 2112 is larger than the cross-sectional area of ​​the first groove 2111, so that a sealing ring 2113 is provided between the inner peripheral wall of the second groove 2112 and the outer peripheral wall of the sensor body 22, wherein the sealing ring 2113 can prevent the thermal conductive adhesive from flowing out of the groove 211, so as to better transfer the heat on the board body 1 to the sensor body 22, thereby improving the detection precision and accuracy of the sensor body 22, which is further beneficial to control the refrigerant temperature at the inlet 11 or detect that the refrigerant temperature at the outlet 12 is within an appropriate range, thereby facilitating the normal operation of the battery pack.

[0055] In some embodiments of the present invention, Figure 6-Figure 8 As shown, the sensor body 22 has a connecting plate 221, which is located on the side of the base 21 away from the plate body 1 and connected to the base 21 via fasteners. Thus, the connection reliability between the sensor body 22 and the base 21 is improved, and the structural strength of the temperature detection assembly 2 is improved.

[0056] In some embodiments of the present invention, Figure 1-Figure 5 and Figure 8 As shown, the end of the temperature detection component 2 away from the plate body 1 has a connection terminal 24, and the cooling plate assembly 10 also includes: a connection harness 3, one end of the connection harness 3 is suitable for connecting to the connection terminal 24, and the other end is used to connect to the battery manager of the battery pack.

[0057] It can be understood that by connecting the connecting terminal 24 with the connecting harness 3, and connecting the connecting harness 3 with the battery manager, the temperature signal of the temperature detection component 2 can be transmitted to the battery manager, and the battery manager can adjust the temperature control system of the battery pack according to the temperature signal, so that the temperature of the battery pack is within an appropriate range, which is conducive to the battery pack being in the best working state.

[0058] In some embodiments of the present invention, Figure 3-Figure 5 As shown, the cooling plate assembly 10 further includes: a harness fixing assembly 4, which is arranged at one end of the plate body 1 in the thickness direction where the temperature detection assembly 2 is arranged, and is used to fix the connecting harness 3. Thus, the connecting harness 3 is prevented from moving randomly in the battery pack and affecting the operation of the battery pack.

[0059] In some embodiments of the present invention, Figure 5 As shown, the wire harness fixing assembly 4 includes a wire harness bracket 41 and a wire harness tie 42, there are multiple wire harness brackets 41, there are multiple wire harness ties 42 corresponding to the wire harness brackets 41, the wire harness bracket 41 has a through hole 411, the wire harness tie 42 is passed through the through hole 411 to fix the connecting wire harness 3 to the wire harness bracket 41, wherein it should be noted that one wire harness bracket 41 corresponds to one wire harness tie 42, and the position setting of the wire harness bracket 41 is relatively flexible, so that this form of wire harness fixing assembly 4 can be set more flexibly, for example, it can be set at the turning point of the connecting wire harness 3, etc., thereby improving production efficiency.

[0060] and / or, if Figure 4 As shown, the harness bracket 41 is connected with a plurality of harness ties 42 spaced apart along the extension direction of the harness bracket 41, and the harness ties 42 form through holes 421 for fixing the connection harness 3 to the harness bracket 41. It can be understood that one harness bracket 41 corresponds to a plurality of harness ties 42, and the plurality of harness ties 42 are spaced apart along the extension direction of the harness bracket 41, so that the plurality of harness ties 42 can be positioned in the extension direction of the harness bracket 41, thereby simplifying the process of positioning each harness ties 42 in the extension direction of the harness bracket 41, thereby improving production efficiency.

[0061] In some embodiments of the present invention, Figure 1 and Fig. 9 As shown, in the length direction of the board body 1, a side of the board body 1 away from the temperature detection component 2 has an inspection port 17, and the inspection port 17 penetrates the board body 1 along the thickness direction of the board body 1. The setting of the inspection port 17 can facilitate users to repair the structures and parts in the battery pack, such as the connecting harness 3.

[0062] A battery pack according to an embodiment of the present invention is described below.

[0063] The battery pack according to the embodiment of the utility model includes: a box body, the above-mentioned cooling plate assembly 10, a liquid inlet pipe and a liquid outlet pipe, wherein the cooling plate assembly 10 is arranged in the box body; one end of the liquid inlet pipe is connected to the inlet 11, and one end of the liquid outlet pipe is connected to the outlet 12, and the liquid inlet pipe and the liquid outlet pipe are arranged outside the box body. It can be understood that the liquid inlet pipe and the liquid outlet pipe are arranged outside the box body, thereby reducing the probability of liquid leakage in the box body and improving the safety of the battery pack.

[0064] According to the battery pack of the embodiment of the utility model, a first channel 141 and a second channel 142 are arranged on the plate body 1, and an inlet 11 is arranged to be directly connected with one end of the first channel 141, and an outlet 12 is arranged to be directly connected with one end of the second channel 142, and a temperature detection component 2 is arranged at one end of the first channel 141 close to the inlet 11 and / or one end of the second channel 142 close to the outlet 12, so that the temperature detection component 2 is arranged on the plate body 1, and it is avoided that the temperature detection component 2 changes with the position change of the liquid inlet pipe and the liquid outlet pipe, so that when the liquid inlet pipe and the liquid outlet pipe are located outside the battery pack, the temperature detection component 2 can still be located in the battery pack, thereby reducing the risk of leakage in the battery pack, reducing the interference to the temperature detection component 2, reducing the failure probability, and increasing the life of the temperature detection component 2, so that the temperature control of the battery pack is more accurate, which is conducive to the normal operation of the battery pack.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cooling plate assembly, characterized in that: include: A plate body, the plate body having a cooling channel and an inlet and an outlet communicating with the cooling channel, the cooling channel comprising a first channel and a second channel, the inlet being directly communicating with one end of the first channel, and the outlet being directly communicating with one end of the second channel; A temperature detection component is provided at one end of the first channel close to the inlet and / or one end of the second channel close to the outlet.

2. The cooling plate assembly according to claim 1, characterized in that The temperature detection component is arranged on one side of the plate body in the thickness direction, and a temperature measuring opening is provided on the surface of one side in the thickness direction of the plate body. The temperature detection component has a boss on the side facing the plate body, and the boss extends into the temperature measuring opening. The outer peripheral wall of the boss is in contact with the inner peripheral wall of the temperature measuring opening.

3. The cooling plate assembly according to claim 2, characterized in that The temperature detection component is connected to the plate body by welding. The temperature detection component has an annular groove on one side facing the plate body. The annular groove is arranged around the boss and is used for filling solder.

4. The cooling plate assembly according to claim 1, characterized in that The temperature detection component comprises: A base, the base is connected to the plate body, and one end of the base away from the plate body has a groove; a sensor body, at least a portion of which is disposed in the groove; Thermally conductive adhesive is disposed in the groove and filled between the sensor body and the bottom wall of the groove.

5. The cooling plate assembly according to claim 4, characterized in that The groove includes a first groove and a second groove arranged along the thickness direction of the plate body, the first groove is arranged close to the plate body relative to the second groove, the cross-sectional area of ​​the second groove is larger than the cross-sectional area of ​​the first groove, the sensor body passes through the second groove and is partially located in the first groove, the thermal conductive adhesive is filled in the first groove, and a sealing ring is provided between the inner circumferential wall of the second groove and the outer circumferential wall of the sensor body.

6. The cooling plate assembly according to claim 4, characterized in that The sensor body is provided with a connecting plate, which is located on a side of the base away from the plate body and is connected to the base via a fastener.

7. The cooling plate assembly according to claim 1, characterized in that The temperature detection assembly has a connection terminal at one end away from the plate body, and the cooling plate assembly further comprises: A connecting harness, one end of which is suitable for connecting to the connecting terminal, and the other end of which is used to connect to the battery manager of the battery pack.

8. The cooling plate assembly according to claim 7, characterized in that Also includes: A wire harness fixing component is arranged at one end of the plate body in the thickness direction where the temperature detection component is arranged, and is used to fix the connecting wire harness.

9. The cooling plate assembly according to claim 8, characterized in that The wiring harness fixing assembly comprises a wiring harness bracket and a wiring harness tie. There are multiple wire harness brackets, and there are multiple wire harness ties corresponding to the wire harness brackets one by one. The wire harness bracket has a through hole, and the wire harness tie is passed through the through hole to fix the connecting wire harness to the wire harness bracket, and / or the wire harness bracket is connected to multiple wire harness ties spaced apart along the extension direction of the wire harness bracket, and the wire harness tie forms a through hole to fix the connecting wire harness to the wire harness bracket.

10. A battery pack, characterized in that: include: Box; The cooling plate assembly according to any one of claims 1 to 9, wherein the cooling plate assembly is disposed in the box; A liquid inlet pipe and a liquid outlet pipe, one end of the liquid inlet pipe is connected to the inlet, one end of the liquid outlet pipe is connected to the outlet, and the liquid inlet pipe and the liquid outlet pipe are arranged outside the box.

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