Thermal management device, battery pack and vehicle

Abstract

The utility model provides a thermal management device, a battery pack and a vehicle, a second pipeline and a first pipeline in the thermal management device are arranged in parallel, one ends of the first pipeline and the second pipeline are connected together to form a main inlet, and the other ends of the first pipeline and the second pipeline are connected together to form a main outlet; the first switch assembly is arranged on the first pipeline, a first interface is formed by shunting in the first pipeline, a first flow path is formed between the first interface and the main inlet, a second flow path is formed between the first interface and the main outlet, and the first interface is used for being communicated with one of a liquid inlet and a liquid outlet of the liquid cooling heat dissipation device; the second switch assembly is arranged on the second pipeline and shunts from the second pipeline to form a second interface, a third flow path is formed between the second interface and the main inlet, a fourth flow path is formed between the second interface and the main outlet, and the second interface is used for being communicated with the other one of the liquid inlet and the liquid outlet of the liquid cooling heat dissipation device; the thermal management device may form a forward flow path or a reverse flow path. According to the utility model, the temperature equalization consistency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle thermal management, and in particular to a thermal management device, a battery pack and a vehicle. Background Art

[0002] At present, the quality of thermal management technology of battery packs in new energy electric vehicles has become an important factor affecting the service life of battery packs.

[0003] In a common thermal management solution for battery packs, a liquid cooling plate with cooling channels is installed in the battery pack to dissipate heat from the battery cell components, so that the operating temperature is reduced and maintained within a more appropriate range. In this thermal management solution, after the coolant is injected from one opening of the liquid cooling plate, the coolant flows out from another opening after completing the heat exchange.

[0004] With this thermal management solution, the coolant can only flow in a single direction. The temperature near an opening that serves as the liquid inlet for a long time is relatively low, while the temperature near an opening that serves as the liquid outlet for a long time is relatively high. The temperature balance and consistency of the two openings is poor, which will reduce the life of the product's hardware components after long-term use. Utility Model Content

[0005] In view of this, the utility model aims to propose a thermal management device, a battery pack and a vehicle to improve the temperature balance consistency of thermal management and increase the life of product hardware components.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] The present invention provides a thermal management device, which includes:

[0008] First pipeline;

[0009] a second pipeline, the second pipeline being arranged in parallel with the first pipeline, one end of the first pipeline and the second pipeline being connected together to form a main inlet of the thermal management device, and the other end of the first pipeline and the second pipeline being connected together to form a main outlet of the thermal management device;

[0010] a first switch assembly, the first switch assembly being arranged on the first pipeline, and diverting flow from the first pipeline to form a first interface, a first flow path being formed between the first interface and the main inlet, and a second flow path being formed between the first interface and the main outlet, the first interface being used to communicate with one of a liquid inlet and a liquid outlet of a liquid cooling device;

[0011] a second switch assembly, the second switch assembly being arranged on the second pipeline, diverting flow from the second pipeline to form a second interface, a third flow path being formed between the second interface and the main inlet, a fourth flow path being formed between the second interface and the main outlet, the second interface being used to communicate with another liquid inlet and liquid outlet of the liquid cooling device;

[0012] When the first flow path and the fourth flow path are opened, and the second flow path and the third flow path are closed, the thermal management device forms a forward flow path;

[0013] When the first flow path and the fourth flow path are closed and the second flow path and the third flow path are opened, the heat management device forms a reverse flow path.

[0014] Further, the first switch assembly includes a first solenoid valve and a second solenoid valve;

[0015] One port of the first solenoid valve is connected to the main inlet, another port of the first solenoid valve is connected to one port of the second solenoid valve, and another port of the second solenoid valve is connected to the main outlet;

[0016] The first interface is formed between the first solenoid valve and the second solenoid valve.

[0017] Further, the second switch assembly includes a third solenoid valve and a fourth solenoid valve;

[0018] One port of the third solenoid valve is connected to the main inlet, another port of the third solenoid valve is connected to one port of the fourth solenoid valve, and another port of the fourth solenoid valve is connected to the main outlet;

[0019] The second interface is formed between the third solenoid valve and the fourth solenoid valve.

[0020] Furthermore, the first pipeline and the second pipeline are channel structures arranged in the same valve body;

[0021] The first switch assembly and the second switch assembly are fixedly connected to the valve body.

[0022] Furthermore, the thermal management device also includes a controller;

[0023] The controller is electrically connected to the first switch component and the second switch component, and is used to control the operating frequencies of the forward flow path and the reverse flow path.

[0024] Compared with the prior art, the thermal management device described in the utility model has the following advantages:

[0025] The thermal management device provided by the utility model is provided with a first switch assembly and a second switch assembly respectively correspondingly on a first pipeline and a second pipeline connected in parallel, and the first switch assembly is used to shunt and lead out the first interface from the first pipeline, and the second switch assembly is used to shunt and lead out the second interface from the second pipeline. The first interface is used to communicate with one of the liquid inlet and the liquid outlet of the liquid cooling heat dissipation device, and the second interface is used to communicate with the other of the liquid inlet and the liquid outlet of the liquid cooling heat dissipation device. By controlling the respective working states of the first switch assembly and the second switch assembly, the thermal management device can form a forward flow path or a reverse flow path. In this heat pipe device, when a forward flow path is formed, the heat exchange medium enters from the main inlet, passes through the first interface, the liquid cooling heat dissipation device, the second interface in sequence, and finally flows out from the main outlet. When a reverse flow path is formed, the heat exchange medium enters from the main inlet, passes through the second interface, the liquid cooling heat dissipation device, the first interface in sequence, and finally flows out from the main outlet.

[0026] Therefore, the thermal management device of the utility model can realize the switching control of the flow direction of the heat exchange medium, which helps to improve the temperature balance consistency of the liquid inlet and outlet of the liquid cooling device, and can improve the thermal management performance. In addition, in different time periods, the flow direction of the heat exchange medium in the same switch component can be different, which helps to flush the switch component and reduce the risk of flow blockage caused by impurities deposited and attached in the pipeline.

[0027] Another object of the present invention is to provide a battery pack to improve the heat dissipation balance consistency of the battery pack, thereby increasing the service life of the battery pack.

[0028] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0029] An embodiment of the utility model provides a battery pack, which includes the aforementioned thermal management device.

[0030] Furthermore, the liquid-cooled heat dissipation device is a liquid cooling plate, and the liquid cooling plate is provided with a cooling channel, one end of the cooling channel is the liquid inlet, and the other end of the cooling channel is the liquid outlet.

[0031] Furthermore, the battery pack further comprises a battery cell assembly, and the liquid cooling plate is disposed at least on one of a side surface, an end surface and an internal gap of the battery cell assembly.

[0032] Furthermore, a thermally conductive adhesive is provided between the liquid cooling plate and the battery core assembly.

[0033] The advantages of the battery pack and the above-mentioned thermal management device over the prior art are the same and will not be described in detail here.

[0034] Another object of the utility model is to provide a vehicle to improve the thermal management performance of the vehicle, reduce maintenance costs, and increase the service life of the vehicle.

[0035] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0036] A vehicle comprising any one of the thermal management devices or battery packs described above.

[0037] The advantages of the vehicle and the above-mentioned thermal management device over the prior art are the same and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0039] Figure 1 It is a schematic diagram of a first thermal management device according to an embodiment of the utility model;

[0040] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the forward flow path of the thermal management device;

[0041] Figure 3 For the utility model embodiment Figure 1 Schematic diagram of reverse flow path of thermal management device;

[0042] Figure 4 It is a schematic diagram of a first thermal management device according to an embodiment of the utility model;

[0043] Figure 5 For the utility model embodiment Figure 4 Schematic diagram of the forward flow path of the thermal management device;

[0044] Figure 6 For the utility model embodiment Figure 4 Schematic diagram of the reverse flow path of the thermal management device.

[0045] Description of reference numerals:

[0046] 10-thermal management device, 20-liquid cooling device, 101-first pipeline, 102-second pipeline, 10a-main inlet, 10b-main outlet, 10c-first interface, 10d-second interface, 103-first switch assembly, 104-second switch assembly, 201-first opening, 202-second opening, 1031-first solenoid valve, 1032-second solenoid valve, 1041-third solenoid valve, 1042-fourth solenoid valve. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] Reference Figure 1 The present utility model embodiment provides a thermal management device 10, the thermal management device comprising:

[0050] A first pipeline 101;

[0051] A second pipeline 102, wherein the second pipeline 102 is arranged in parallel with the first pipeline 101, one end of the first pipeline 101 and the second pipeline 102 are connected together to form a main inlet 10a of the thermal management device 10, and the other end of the first pipeline 101 and the second pipeline 102 are connected together to form a main outlet 10b of the thermal management device 10;

[0052] A first switch component 103, the first switch component 103 is arranged on the first pipeline 101, and a flow is diverted from the first pipeline 101 to form a first interface 10c, a first flow path is formed between the first interface 10c and the main inlet, and a second flow path is formed between the first interface 10c and the main outlet, and the first interface 10c is used to communicate with one of the liquid inlet and the liquid outlet of the liquid cooling device;

[0053] A second switch component 104, the second switch component 104 is arranged on the second pipeline 102, and the second pipeline 102 is split to form a second interface 10d, a third flow path is formed between the second interface 10d and the main inlet, and a fourth flow path is formed between the second interface 10d and the main outlet, and the second interface 10d is used to communicate with the other liquid inlet and the liquid outlet of the liquid cooling device;

[0054] When the first flow path and the fourth flow path are opened, and the second flow path and the third flow path are closed, the thermal management device forms a forward flow path;

[0055] When the first flow path and the fourth flow path are closed and the second flow path and the third flow path are opened, the heat management device forms a reverse flow path.

[0056] like Figure 1As shown, a schematic diagram of a part of the structure of the thermal management device 10 of an embodiment of the utility model is given. The thermal management device 10 shown in the figure includes two pipelines arranged in parallel, namely a first pipeline 101 and a second pipeline 102. One end of the first pipeline 101 and one end of the second pipeline 102 are connected and intersected together as the main inlet 10a of the thermal management device 10. The main inlet 10a can be connected to a pumping device that provides a heat exchange medium to receive a heat exchange medium such as a coolant from the outside. The other end of the first pipeline 101 and the other end of the second pipeline 102 are connected and intersected together as the main outlet 10b of the thermal management device 10. The main outlet 10a can be connected to a recovery container for recovering the heat exchange medium to return the heat exchanged heat exchange medium to the recovery container.

[0057] A first switch assembly 103 is installed in the first pipeline 101. The first switch assembly 103 may be a control valve with three ports. The first port of the first switch assembly 103 is connected to the main inlet 10a, the second port of the first switch assembly 103 is connected to the main outlet 10b, and the third port of the first switch assembly 103 serves as the first interface 10c of the thermal management device 10, which can be used to communicate with one of the liquid inlet and the liquid outlet of the liquid cooling device. A first flow path is formed between the first interface 10c and the main inlet 10a, and a second flow path is formed between the first interface 10c and the main outlet 10b.

[0058] The flow path between the first port and the third port of the first switch component 103 is a part of the first flow path, and the flow path between the third port and the second port of the first switch component 103 is a part of the second flow path. Therefore, when the third port of the first switch component 103 is controlled to be connected to the first port, the corresponding first flow path is in an open state and the second flow path is in a closed state; when the third port of the first switch component 103 is controlled to be connected to the second port, the corresponding second flow path is in an open state and the first flow path is in a closed state.

[0059] A second switch assembly 104 is installed in the second pipeline 102. The second switch assembly 104 may be a control valve with three ports. The first port of the second switch assembly 104 is connected to the main inlet 10a, the second port of the second switch assembly 104 is connected to the main outlet 10b, and the third port of the second switch assembly 104 serves as the second interface 10d of the thermal management device 10, which can be used to communicate with the liquid inlet and the liquid outlet of the liquid cooling device. A third flow path is formed between the second interface 10d and the main inlet 10a, and a fourth flow path is formed between the second interface 10d and the main outlet 10b.

[0060] The flow path between the first port and the third port of the second switch component 104 is a part of the third flow path, and the flow path between the third port and the second port of the second switch component 104 is a part of the fourth flow path. Therefore, when the third port of the second switch component 104 is controlled to be connected to the first port, the corresponding third flow path is in an open state and the fourth flow path is in a closed state; when the third port of the second switch component 104 is controlled to be connected to the second port, the corresponding fourth flow path is in an open state and the third flow path is in a closed state.

[0061] like Figure 2 As shown, when the first flow path and the fourth flow path are open, and the second flow path and the third flow path are closed, the heat exchange medium enters the thermal management device 10 from the main inlet 10a, flows through the first flow path, and then flows out from the first interface 10c and enters the liquid cooling device 20. After completing the heat exchange in the liquid cooling device 20, it flows out from the liquid cooling device 20, enters the liquid cooling device 20 from the second interface 10d, flows through the third flow path, and then flows out from the main outlet 10b. Thus, a positive flow path indicated by the dotted line trajectory in the figure can be formed.

[0062] like Figure 3 As shown, when the second and third flow paths are open, and the first and fourth flow paths are closed, the heat exchange medium enters the thermal management device 10 from the main inlet 10a, flows through the third flow path, and then flows out from the second interface 10d and enters the liquid cooling device 20. After completing the heat exchange in the liquid cooling device 20, it flows out from the liquid cooling device 20, enters the liquid cooling device 20 from the first interface 10c, flows through the second flow path, and then flows out from the main outlet 10b. Thus, a reverse flow path indicated by the dotted line trajectory in the figure can be formed.

[0063] It should be noted that Figure 2 and Figure 3 The forward and reverse flow paths shown are just a representation of the opposite flow directions. Figure 2 Represents the reverse flow path, Figure 3 It represents a forward flow path, and the embodiments of the present utility model do not limit or elaborate on this.

[0064] In traditional thermal management devices, the heat exchange medium usually flows in from one opening and flows out from another opening, forming a single fixed-direction flow path. Taking the process of using coolant for heat dissipation as an example, the temperature of the opening where the coolant flows in is relatively low. The closer to the coolant outlet, the higher the temperature of the opening where the coolant flows out, because the coolant has carried more heat. As a result, there is a significant temperature difference between the two openings of the thermal management device, that is, the closer to the coolant outlet, the worse the cooling and heat dissipation effect.

[0065] Combination Figure 2 and Figure 3 The heat dissipation process of the embodiment of the utility model is described by way of example. The coolant at a relatively low temperature flows from the main inlet 10a along the Figure 2 The forward flow path shown enters the liquid cooling device 20 from the first opening 201 and flows out from the second opening 202 of the liquid cooling device 20. At this time, the temperature near the first opening 201 is lower than the temperature near the second opening 202. In order to reduce the temperature difference between the two, the first switch component 103 and the second switch component 104 can be controlled to switch to Figure 3 The reverse flow path shown in the figure, at this time, the coolant with lower temperature flows from the main inlet 10a along the Figure 3 The reverse flow path shown enters the liquid cooling heat sink 20 from the second opening 202 and flows out from the first opening 201 of the liquid cooling heat sink 20. At this time, the temperature near the second opening 202 is lower than the temperature near the first opening 201.

[0066] Therefore, the thermal management device of the utility model can help improve the temperature balance and consistency of the liquid inlet and outlet of the liquid cooling device by making the heat exchange medium flow in the forward flow path and the reverse flow path in different time periods, thereby improving the thermal management performance. In addition, the flow direction of the heat exchange medium in the same switch assembly can be different in different time periods, which helps to flush the switch assembly and reduce the risk of flow blockage caused by impurities deposited and attached in the pipeline.

[0067] Further, refer to Figure 4 or Figure 5 , the first switch assembly 103 includes a first solenoid valve 1031 and a second solenoid valve 1032;

[0068] One port of the first solenoid valve 1031 is connected to the main inlet 10a, another port of the first solenoid valve 1031 is connected to one port of the second solenoid valve 1032, and another port of the second solenoid valve 1032 is connected to the main outlet 10b;

[0069] The first interface 10c is formed between the first solenoid valve 1031 and the second solenoid valve 1032 .

[0070] Specifically, if Figure 4 or Figure 5As shown, the first switch assembly 103 may include a first solenoid valve 1031 and a second solenoid valve 1032, the first solenoid valve 1031 and the second solenoid valve 1032 are connected in series, the intersection of the two solenoid valves forms a first interface 10c, the end of the first solenoid valve 1031 opposite to the first interface 10c is connected to the main inlet 10a, and the end of the second solenoid valve 1032 opposite to the first interface 10c is connected to the main outlet 10b. That is, the first solenoid valve 1031 is located in the first flow path and can control the on and off of the first flow path, and the second solenoid valve 1032 is located in the second flow path and can control the on and off of the second flow path. In addition, the first switch assembly 103 can also be an integrated two-position four-way solenoid valve, and the two solenoid valves form a first switch assembly 103 with three ports. The two solenoid valves in this first switch assembly 103 can be independently controlled, which can prevent the failure of the heat exchange flow path when the integrated solenoid valve fails.

[0071] Further, refer to Figure 4 or Figure 5 , the second switch assembly 104 includes a third solenoid valve 1041 and a fourth solenoid valve 1042;

[0072] One port of the third solenoid valve 1041 is connected to the main inlet 10a, another port of the third solenoid valve 1041 is connected to one port of the fourth solenoid valve 1042, and another port of the fourth solenoid valve 1042 is connected to the main outlet 10b;

[0073] The second interface 10d is formed between the third solenoid valve 1041 and the fourth solenoid valve 1042 .

[0074] Specifically, if Figure 4 or Figure 5 As shown, the second switch assembly 104 may include a third solenoid valve 1041 and a fourth solenoid valve 1042, the third solenoid valve 1041 and the fourth solenoid valve 1042 are connected in series, the intersection of the two solenoid valves forms a second interface 10d, the end of the third solenoid valve 1041 opposite to the second interface 10d is connected to the main inlet 10a, and the end of the fourth solenoid valve 1042 opposite to the second interface 10d is connected to the main outlet 10b. That is, the third solenoid valve 1041 is located in the third flow path and can control the on and off of the third flow path, and the fourth solenoid valve 1042 is located in the fourth flow path and can control the on and off of the fourth flow path. In addition, the second switch assembly 104 can also be an integrated two-position four-way solenoid valve, and the two solenoid valves form a second switch assembly 104 with three ports. The two solenoid valves in this second switch assembly 104 can be independently controlled, which can prevent the failure of the heat exchange flow path when the integrated solenoid valve fails.

[0075] Furthermore, the first pipeline 101 and the second pipeline 102 are channel structures disposed in the same valve body;

[0076] The first switch assembly 103 and the second switch assembly 104 are fixedly connected to the valve body.

[0077] Specifically, in one embodiment, in the embodiment of the utility model, the first pipeline 101 and the second pipeline 102 can be processed on a valve body. At this time, the first pipeline 101 and the second pipeline 102 can be the channel structure inside the metal valve block. The channel structure can form a main inlet 10a, a main outlet 10b, a first interface 10c, a second interface 10d and an opening for connecting with the first switch component 103 and the second switch component 104 on the surface of the metal valve block. The first switch component 103 and the second switch component 104 can be fixedly connected to the corresponding openings using valve connectors. This structural form of processing two parallel pipelines on the same valve body can reduce the complexity of hose connection, and the first switch component 103 and the second switch component 104 are both fixedly connected to the valve body, and the valve body can be fixed on the vehicle body, which can reduce the installation and fixing process of the switch component and help improve assembly efficiency.

[0078] Furthermore, the thermal management device 10 also includes a controller;

[0079] The controller is electrically connected to the first switch component 103 and the second switch component 104, and the controller is used to control the operating frequency of the forward flow path and the reverse flow path.

[0080] Specifically, in one implementation, in the embodiment of the utility model, the thermal management device 10 may further include a controller (not shown in the figure), which may be an independent dedicated control module of the thermal management device 10, or may be a controller shared with the vehicle controller of the vehicle. The controller is electrically connected to the first switch component 103 and the second switch component 104, and may send a control signal to the switch component to adjust the on-off state of the corresponding flow path.

[0081] For example, in the T1 time period, the controller controls the first switch component 103 to operate so that the first flow path is opened and the second flow path is closed, and the controller controls the second switch component 104 to operate so that the fourth flow path is opened and the third flow path is closed. In the T2 time period, the controller controls the first switch component 103 to operate so that the first flow path is closed and the second flow path is opened, and the controller controls the second switch component 104 to operate so that the fourth flow path is closed and the third flow path is opened.

[0082] It can be understood that the trigger signal for the controller to control the first switch component 103 and the second switch component 104 can be the temperature difference information in the liquid cooling device 20. For example, a temperature sensor is arranged near the first opening 201 and the second opening 202 to collect temperature data of the two areas. After the controller obtains the temperature data of the two areas, when the temperature difference between the two areas is greater than a preset threshold, the first switch component 103 and the second switch component 104 can be triggered to operate, so that the heat exchange medium is cooled according to the temperature difference between the first opening 201 and the second opening 202. Figure 2 or Figure 3 Schematic diagram of the flow path.

[0083] In some embodiments, the ratio of the duration of T1 and T2 can be preset in the controller so that the thermal management device switches the forward flow path and the reverse flow path according to the set working frequency. Of course, the duration of T1 and T2 can be adjusted more accurately and autonomously in real time according to the above temperature difference information to achieve dynamic balance consistency of the thermal management device.

[0084] The embodiment of the utility model further provides a battery pack, which includes the aforementioned thermal management device 10.

[0085] In the battery pack of the embodiment of the utility model, the aforementioned thermal management device 10 can be used to cool and dissipate heat sources with large heat generation in the battery pack, thereby improving the heat dissipation balance and consistency of the battery pack, helping to increase the service life of the battery pack and reduce the maintenance cost of the battery pack.

[0086] Furthermore, the liquid-cooling heat dissipation device 20 is a liquid cooling plate, and the liquid cooling plate is provided with a cooling channel, one end of the cooling channel is the liquid inlet, and the other end of the cooling channel is the liquid outlet.

[0087] Specifically, in one embodiment, in a battery pack, the above-mentioned liquid-cooled heat dissipation device 20 may be a liquid cooling plate having a cooling channel, one end of the cooling channel being a liquid inlet for the coolant to flow in, and the other end of the cooling channel being a liquid outlet for the coolant to flow out. The direction of the cooling channel may be in various shapes such as an S-shape or a comb-tooth shape with a main trunk and branches. The utility model does not limit the direction of the cooling channel. It is understandable that the functional definition of the liquid inlet and the liquid outlet is affected by the control of the flow direction by the first switch component 103 and the second switch component 104. The embodiment of the utility model does not limit which opening is used as the liquid inlet or the liquid outlet. Figures 1 to 3 As shown in FIG. 2 , when the first opening 201 is a liquid inlet, the second opening 202 is a liquid outlet; when the first opening 201 is a liquid outlet, the second opening 202 is a liquid inlet.

[0088] Furthermore, the battery pack further comprises a battery cell assembly, and the liquid cooling plate is disposed at least on one of a side surface, an end surface and an internal gap of the battery cell assembly.

[0089] Specifically, in one embodiment, in a battery pack, the cell assemblies arrayed in the battery pack case may be square cells or cylindrical cells. Regardless of the structural shape of the cell, it has a top surface with a pole ear, a bottom surface opposite to the pole ear, a side surface between the top surface and the bottom surface, and an internal gap between each cell. When a liquid cooling plate is used to dissipate heat from the cell assembly, the liquid cooling plate may be arranged at least at the bottom surface, the top surface, the side surface, and the internal gap to dissipate heat from the corresponding surface. The more contact surfaces between the liquid cooling plate and the cell assembly, the higher the heat dissipation efficiency. In addition, the liquid cooling plate may be a structural member independent of the upper and lower boxes of the battery pack case, or it may be integrated with the upper and lower boxes of the battery pack case, and the cooling channel may be directly processed on the top plate, bottom plate, side wall, or the middle of the battery pack case of the battery pack.

[0090] Furthermore, a thermally conductive adhesive is provided between the liquid cooling plate and the battery core assembly.

[0091] Specifically, in one embodiment, in the battery pack, the gap between the liquid cooling plate and the battery cell assembly can be filled with thermal conductive adhesive. On the one hand, the thermal conductive adhesive shell improves the efficiency of heat transfer and heat dissipation, and on the other hand, it can also fix the battery cell assembly.

[0092] In addition, an embodiment of the utility model further provides a vehicle, which includes any one of the aforementioned thermal management devices or battery packs.

[0093] In the vehicle provided by the embodiment of the utility model, in addition to applying the aforementioned thermal management device 10 to the battery pack, it can also be applied to the vehicle's air-conditioning system and other heat exchange systems that require heat exchange, which helps to improve the temperature consistency of the hardware environment in which the heat exchange medium is located and helps to increase the service life of hardware product components.

[0094] Using the aforementioned thermal management device or battery pack in a vehicle can reduce the user's maintenance costs and improve the economy of vehicle use.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal management device, characterized in that: The thermal management device comprises: First pipeline; a second pipeline, the second pipeline being arranged in parallel with the first pipeline, one end of the first pipeline and the second pipeline being connected together to form a main inlet of the thermal management device, and the other end of the first pipeline and the second pipeline being connected together to form a main outlet of the thermal management device; a first switch assembly, the first switch assembly being arranged on the first pipeline, and diverting flow from the first pipeline to form a first interface, a first flow path being formed between the first interface and the main inlet, and a second flow path being formed between the first interface and the main outlet, the first interface being used to communicate with one of a liquid inlet and a liquid outlet of a liquid cooling device; a second switch assembly, the second switch assembly being arranged on the second pipeline, diverting flow from the second pipeline to form a second interface, a third flow path being formed between the second interface and the main inlet, a fourth flow path being formed between the second interface and the main outlet, the second interface being used to communicate with another liquid inlet and liquid outlet of the liquid cooling device; When the first flow path and the fourth flow path are opened and the second flow path and the third flow path are closed, the thermal management device forms a forward flow path; when the first flow path and the fourth flow path are closed and the second flow path and the third flow path are opened, the thermal management device forms a reverse flow path.

2. The thermal management device according to claim 1, characterized in that: The first switch assembly includes a first solenoid valve and a second solenoid valve; One port of the first solenoid valve is connected to the main inlet, another port of the first solenoid valve is connected to one port of the second solenoid valve, and another port of the second solenoid valve is connected to the main outlet; The first interface is formed between the first solenoid valve and the second solenoid valve.

3. The thermal management device according to claim 1, characterized in that: The second switch assembly includes a third solenoid valve and a fourth solenoid valve; One port of the third solenoid valve is connected to the main inlet, another port of the third solenoid valve is connected to one port of the fourth solenoid valve, and another port of the fourth solenoid valve is connected to the main outlet; The second interface is formed between the third solenoid valve and the fourth solenoid valve.

4. The thermal management device according to claim 1, characterized in that: The first pipeline and the second pipeline are channel structures arranged in the same valve body; The first switch assembly and the second switch assembly are fixedly connected to the valve body.

5. The thermal management device according to any one of claims 1 to 4, characterized in that: The thermal management device also includes a controller; The controller is electrically connected to the first switch component and the second switch component, and is used to control the operating frequencies of the forward flow path and the reverse flow path.

6. A battery pack, characterized in that: The battery pack comprises the thermal management device according to any one of claims 1 to 5.

7. The battery pack according to claim 6, characterized in that: The liquid cooling device is a liquid cooling plate, and the liquid cooling plate is provided with a cooling channel, one end of the cooling channel is the liquid inlet, and the other end of the cooling channel is the liquid outlet.

8. The battery pack according to claim 7, characterized in that: The battery pack further includes a battery cell assembly, and the liquid cooling plate is disposed at least on one of a side surface, an end surface, and an internal gap of the battery cell assembly.

9. The battery pack according to claim 8, characterized in that: A heat-conducting adhesive is arranged between the liquid cooling plate and the battery core assembly.

10. A vehicle, characterized in that: The vehicle comprises the thermal management device according to any one of claims 1 to 5 or the battery pack according to any one of claims 6 to 9.

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