Thermal management device, battery pack and electric equipment

Abstract

The invention relates to the technical field of batteries, and provides a thermal management device, a battery pack and electric equipment, the thermal management device is used for managing the temperature of a battery pack, the battery pack comprises a plurality of batteries arranged in an array, the thermal management device comprises a battery fixing assembly and a plurality of heating pieces, the plurality of batteries arranged in the array are arranged in the battery fixing assembly, and the plurality of heating pieces are arranged in the battery fixing assembly. A flow channel through which a flowing medium flows is formed in the battery fixing assembly; and a heating piece is arranged between every two adjacent flow channels in the extending direction of the battery. According to the embodiment of the invention, the heating efficiency of the battery pack can be ensured while the temperature uniformity of the battery pack is ensured.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a thermal management device, a battery pack, and an electrical device. Background Art

[0002] In the field of new energy technologies, such as new energy vehicles, batteries are core components and the source of their power. As a core component of new energy vehicles, battery performance and stability are receiving increasing attention from manufacturers and users. However, because batteries generate significant heat during charging and discharging, excessive temperature rise can lead to thermal failure, resulting in decreased charging and discharging performance in low-temperature environments.

[0003] In the related art, a heating source is generally used to heat the battery cells. However, it is difficult to control the heating power during the heating process. If the power is too high, the heating speed will be fast, while if the power is too low, the heating speed will be slow, resulting in low heating efficiency. At the same time, due to the inconsistent thermal conductivity of the battery, it is difficult to control the uniformity of the battery temperature. Summary of the Invention

[0004] The present application provides a thermal management device, a battery pack, and an electrical device, which can ensure the uniformity of battery temperature while ensuring the heating efficiency of the battery.

[0005] A first aspect of the present application provides a thermal management device for managing the temperature of a battery pack, the thermal management device comprising:

[0006] A flow channel component, wherein the flow channel component has at least two flow channels;

[0007] and a heating element, wherein the heating element is provided between two adjacent flow channels, and both the flow channels and the heating element are suitable for heat exchange with the battery.

[0008] The embodiment of the present application designs the thermal management device to include a flow channel component and multiple heating components. The flow channel component has a flow channel for the flow medium to flow through, and a heating component is provided between two adjacent flow channels. The flow channel and the heating component are both suitable for heat exchange with the battery. In this way, the flow channel and the heating component form a coupling device, which can not only ensure the normal heating of the battery by the heating component under extremely cold working conditions, but also ensure the normal heat dissipation of the battery by the liquid cooling function of the flow channel under high temperature working conditions. In addition, under cold working conditions, the liquid heating function of the flow channel and the heating function of the heating component can be performed simultaneously to improve the heating rate and heating efficiency of the battery. Therefore, the present application can further ensure the heating efficiency of the battery while ensuring the uniformity of the battery temperature.

[0009] In a possible implementation, the present invention includes: a plurality of the flow channel members, the plurality of the flow channel members are arranged along a first direction, and two adjacent flow channel members arranged along the first direction are suitable for fixing batteries.

[0010] In a possible implementation, there is a gap between two adjacent flow channel components, and the gap is suitable for accommodating a battery.

[0011] In a possible implementation, the flow channel component includes: a plurality of flow channel plates, each of the flow channel plates having the flow channel therein;

[0012] A plurality of the flow channel plates are stacked in the second direction.

[0013] In one possible implementation, the contour of a surface of the flow channel plate facing the battery is adapted to the outer contour of the battery.

[0014] In one possible implementation, the flow channel component further includes:

[0015] The mounting portion is located between two adjacent flow channel plates, and the heating element is arranged on the mounting portion.

[0016] In one possible implementation, the mounting portion is a heat-conducting portion, and the heating element is disposed on a surface of the heat-conducting portion facing away from the interval; or a heat-conducting portion is disposed between the mounting portion and the heating element.

[0017] In one possible implementation, a contour of a side of the heat conducting portion facing the battery is adapted to an outer contour of the battery.

[0018] In one possible implementation, when the battery is a cylindrical battery, the heat conducting portion is coaxially arranged with the battery on a side facing the battery.

[0019] In a possible implementation, in the flow channel member, at least part of the flow channel plates are provided with protrusions, and an accommodating cavity is formed between two adjacent protrusions;

[0020] The heating element is disposed in the accommodating cavity.

[0021] In one possible implementation, a contour of a side of the heating element facing the battery is adapted to an outer contour of the battery.

[0022] In a possible implementation, the recessed depth of the accommodating cavity is greater than the thickness of the heating element.

[0023] In a possible implementation, it further includes: a plurality of heat-conducting members; each of the intervals has a plurality of the heat-conducting members, and the heat-conducting members are suitable for heat exchange with the battery.

[0024] In one possible implementation, the method further includes: a plurality of flow channel sealing members;

[0025] The flow channel sealing member is provided on one end of each flow channel to seal the flowing medium in the flow channel.

[0026] In a possible implementation, a plurality of the flow channel sealing components provided on the same flow channel component together form a flow channel sealing integrated component.

[0027] In one possible implementation, the device further includes: a plurality of inlet and outlet devices;

[0028] The inlet and outlet devices are also provided on one end of each of the flow channel components to allow the flowing medium in the flow channel to flow into or out of the flow channel component.

[0029] In a possible implementation, the plurality of inlet and outlet devices are located on the same side of the plurality of flow channel components.

[0030] In a possible implementation, the size of the heating element in the height direction of the battery may be 30%-50% of the height of the battery.

[0031] In one possible implementation, a guide strip is provided in the flow channel.

[0032] A second aspect of the present application provides a battery pack, comprising: a battery pack and any one of the above-mentioned thermal management devices;

[0033] The battery pack includes a plurality of batteries arranged in an array, and the plurality of batteries arranged in an array are disposed in the thermal management device.

[0034] By providing the above-mentioned thermal management device in the battery pack, the embodiment of the present application can ensure the temperature uniformity of the battery pack while ensuring the heating efficiency of the battery pack, thereby ensuring the temperature performance of the battery pack.

[0035] The third aspect of the present application provides an electrical device, comprising at least: any one of the battery packs described above.

[0036] The embodiment of the present application can improve the performance of the electrical equipment by providing the above-mentioned battery pack in the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0038] Figure 1 A schematic diagram of the overall structure of the thermal management device provided in an embodiment of the present application;

[0039] Figure 2 for Figure 1 Schematic diagram of the disassembled structure of the thermal management device shown;

[0040] Figure 3 for Figure 1 A schematic cross-sectional view of the thermal management device shown;

[0041] Figure 4 for Figure 1 A schematic cross-sectional view of the thermal management device shown, excluding the battery pack and the heating element;

[0042] Figure 5 for Figure 1 A schematic diagram of the structure of the battery fixing assembly and the flow channel sealing member in the thermal management device shown;

[0043] Figure 6 Another schematic diagram of the overall structure of the thermal management device provided in an embodiment of the present application;

[0044] Figure 7 for Figure 6 Schematic diagram of the disassembled structure of the thermal management device shown;

[0045] Figure 8 for Figure 6 A schematic cross-sectional view of the thermal management device shown;

[0046] Figure 9 for Figure 6 A schematic cross-sectional view of the thermal management device shown, excluding the battery pack and the heating element;

[0047] Figure 10 for Figure 6 The schematic diagram of the structure of the battery fixing assembly and the flow channel sealing component in the thermal management device shown.

[0048] Reference numerals:

[0049] 100-thermal management device;

[0050] 110-battery fixing assembly;

[0051] 1101-flow channel;

[0052] 111- flow channel parts;

[0053] 1111-flow channel plate;

[0054] 1112-heat conducting part;

[0055] 1113- protrusion;

[0056] 1114-accommodation cavity;

[0057] 112-interval;

[0058] 120-heating element;

[0059] 130-heat conducting element;

[0060] 140-flow channel sealing integrated parts;

[0061] 141-flow channel sealing piece;

[0062] 150-Inlet and outlet devices;

[0063] 151-liquid inlet;

[0064] 152-Liquid outlet;

[0065] 200-battery pack;

[0066] 210-battery pack;

[0067] 211-battery;

[0068] L1-first direction;

[0069] L2-Second direction. DETAILED DESCRIPTION

[0070] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0071] With the rapid development of new energy, batteries have experienced rapid development in recent years and are widely used in electric vehicles. Therefore, in the field of new energy technology, such as new energy vehicles, batteries are a core component and the source of power for new energy vehicles. As a core component of electric vehicles, the performance and stability of batteries are increasingly valued by manufacturers and users.

[0072] However, since the single cells used in the battery are secondary batteries, a large amount of heat is generated during the charging and discharging process. If the battery temperature rises too high, it will cause thermal failure, resulting in safety hazards such as fire or explosion, and leading to the problem of reduced charging and discharging performance in low temperature environments.

[0073] In the related art, a heating source is generally used to heat the battery cells. However, it is difficult to control the heating power during the heating process. If the power is too high, the heating speed will be fast, while if the power is too low, the heating speed will be slow, resulting in low heating efficiency. At the same time, due to the inconsistent thermal conductivity of the battery, it is difficult to control the uniformity of the battery temperature.

[0074] To address the aforementioned issues, embodiments of the present application provide a novel thermal management device, battery pack, and electrical equipment. The thermal management device manages the temperature of a battery pack comprising a plurality of batteries arranged in an array. The thermal management device includes a battery mounting assembly and a plurality of heating elements. The plurality of batteries arranged in an array are disposed within the battery mounting assembly, which has flow channels within it for a fluid medium to flow through. A heating element is disposed between adjacent flow channels along the extension direction of the batteries. Embodiments of the present application ensure both temperature uniformity and efficient heating of the battery pack.

[0075] The following is a detailed description of the thermal management device provided in the embodiments of the present application, and the structure of the battery pack and electrical equipment having the thermal management device, with reference to the accompanying drawings.

[0076] Figure 1 A schematic diagram of the overall structure of the thermal management device provided in an embodiment of the present application. Figure 2 for Figure 1 Schematic diagram of the disassembled structure of the thermal management device shown. Figure 3 for Figure 1 The cross-sectional structural diagram of the thermal management device shown is shown. Figure 4 for Figure 1 The cross-sectional structural diagram of the thermal management device shown is shown without the battery pack and the heating element. Figure 5 for Figure 1 The schematic diagram of the structure of the battery fixing assembly and the flow channel sealing component in the thermal management device shown.

[0077] Reference Figures 1 to 5 As shown, an embodiment of the present application provides a thermal management device 100, which is used to manage the temperature of a battery. Taking the temperature management of a battery pack 210 as an example, the battery pack 210 may include a plurality of batteries 211 arranged in an array.

[0078] In the embodiment of the present application, the thermal management device 100 may include: a flow channel component 111 and a plurality of heating components 120 , wherein the flow channel component 111 may have at least two flow channels 1101 therein for a flowing medium to flow through.

[0079] In the embodiment of the present application, a heating element 120 may be provided between two adjacent flow channels 1101 , and both the flow channels 1101 and the heating element 120 are suitable for heat exchange with the battery.

[0080] By designing the thermal management device 100 to include a flow channel component 111 and multiple heating components 120, the flow channel component 111 has a flow channel 1101 inside for the flow medium to flow through, and a heating component 120 is arranged between two adjacent flow channels 1101. The flow channel 1101 and the heating component 120 are both suitable for heat exchange with the battery. In this way, the flow channel 1101 and the heating component 120 form a coupling device, which can not only ensure the normal heating of the battery by the heating function of the heating component 120 under extremely cold working conditions, such as the normal heating of each battery 211 in the battery pack 210, but also ensure the normal heat dissipation of the battery by the liquid cooling function of the flow channel 1101 under high temperature working conditions.

[0081] Furthermore, in cold conditions, the liquid heating function of the flow channel 1101 and the heating function of the heating element 120 can be performed simultaneously to improve the heating rate and efficiency of the battery. Therefore, the present application can ensure the uniformity of the battery temperature while ensuring the heating efficiency of the battery.

[0082] In the embodiment of the present application, the dimension of the heating element 120 in the height direction of the battery can be 30%-50% of the height of the battery, so as to ensure a better heating effect.

[0083] For example, in an embodiment of the present application, the dimension of the heating element 120 in the height direction of the battery can be 30%, 35%, 40%, 45% or 50% of the height of the battery. The embodiment of the present application is not limited to this, nor is it limited to the above examples.

[0084] In the embodiment of the present application, the heating element 120 can be a polyimide (PI) heating film or a silicone rubber heating sheet. Polyimide and silicone rubber are soft and have a certain cushioning property, which can more firmly clamp the battery 211 into the flow channel 111.

[0085] In addition, it should be noted that in the embodiment of the present application, the battery 211 can be a cylindrical battery. For a cylindrical battery, the large circumferential heat exchange area can be fully utilized to uniformly cool and heat in the radial direction, thereby effectively improving the temperature uniformity of the cylindrical battery.

[0086] In the embodiment of the present application, the cylindrical battery can be a cylindrical battery of 18mm*65mm, 26mm*65mm or 46mm*80mm or other types or sizes. If the size of the cylindrical battery changes, the size of each structure in the thermal management device 100 also needs to be adjusted accordingly to adapt to the battery 211.

[0087] In addition, in other embodiments of the present application, the battery may be a square battery, a soft-pack battery, or a special-shaped battery, etc. The size of each structure in the thermal management device 100 may be adjusted according to needs to adapt to different batteries.

[0088] In the embodiment of the present application, the thermal management device 100 may include a plurality of flow channel members 111, wherein the plurality of flow channel members 111 may be arranged sequentially along a first direction L1, and two adjacent flow channel members 111 arranged along the first direction L1 are adapted to secure the battery 211. The thermal management device 100 disclosed in the embodiment of the present application secures the battery 211 via the flow channel member 111. This can, on the one hand, shorten the contact distance between the flow channel member 111 and the battery 211, thereby improving the heat exchange efficiency between the flow channel member 111 and the battery 211, and on the other hand, reduce the cost of the battery pack, and secure the battery 211 via the flow channel member 111.

[0089] In the embodiment of the present application, a gap 112 may be provided between two adjacent flow channel members 111, and the gap 112 is suitable for accommodating a battery 211. By providing the gap 112 between two adjacent flow channel members 111, the battery 211 can be accommodated in the gap 112, which facilitates heat exchange between the flow channel member 111 and the battery 211.

[0090] In a possible implementation, the first direction L1 may be perpendicular to the height direction of the battery 211 .

[0091] In addition, it should be noted that a plurality of flow channel components 111 can collectively constitute a battery fixing assembly 110 .

[0092] In the embodiment of the present application, the flow channel member 111 may include: a plurality of flow channel plates 1111 , wherein each flow channel plate 1111 may have a flow channel 1101 therein, and the plurality of flow channel plates 1111 may be stacked in the second direction L2 .

[0093] In a possible implementation, the second direction L2 may be a height direction of the battery 211 .

[0094] In some embodiments, a guide strip may be added to the flow channel 1101 to increase the turbulence performance and heat transfer performance of the liquid, thereby enhancing the thermal management performance of the thermal management device 100 .

[0095] In the embodiment of the present application, the specific number of flow channels 1101 can be flexibly adjusted according to the thermal management effect required in the actual application scenario, and the embodiment of the present application does not limit this.

[0096] In the embodiment of the present application, the contour of the side of the flow channel plate 1111 facing the battery 211 can be adapted to the outer contour of the battery 211. In this way, the flow channel plate 1111 can not only cover the battery 211 but also fix the battery 211.

[0097] In the embodiment of the present application, the flow channel component 111 may further include: a mounting portion, wherein the mounting portion may be located between two adjacent flow channel plates 1111 , and the heating element 120 may be disposed on the mounting portion.

[0098] It is understood that in some embodiments, the mounting portion may be a heat conducting portion 1112, wherein multiple heat conducting portions 1112 may be connected to the flow channel plates 1111, and the heat conducting portion 1112 may be located between two adjacent flow channel plates 1111. In this way, the heat conducting portion 1112 can connect the multiple flow channel plates 1111, so that the multiple flow channel plates 1111 and the multiple heat conducting portions 1112 become a whole.

[0099] At this time, the heating element 120 can be arranged on the side of the heat conducting portion 1112 away from the spacer 112. The battery 211 is accommodated in the spacer 112, and the heating element 120 is arranged on the side of the heat conducting portion 1112 away from the spacer 112, so that heat exchange between the heating element 120 and the battery 211 can be facilitated.

[0100] Alternatively, in some other embodiments, a heat conducting portion 1112 may be provided between the mounting portion and the heating element 120, that is, the mounting portion and the heat conducting portion are independent components. Furthermore, the heating element may be fixed to the mounting portion via the heat conducting portion.

[0101] In addition, in the embodiment of the present application, the heating element 120 can be attached to the side of the heat conducting portion 1112 facing away from the gap 112 by bonding, so as to ensure that the heating element 120 is better attached to the heat conducting portion and ensure the heating effect.

[0102] In addition, it can be understood that the heating element 120 is arranged on the side of the heat conducting portion 1112 facing away from the spacer 112 , and the surface area of ​​the heat conducting portion 1112 can be larger than the surface area of ​​the heating element 120 to achieve good assembly of the heating element 120 .

[0103] In the embodiment of the present application, the contour of the side of the heat conducting portion 1112 facing the battery 211 may be adapted to the outer contour of the battery 211. For example, in one possible implementation, the heat conducting portion 1112 may be wavy.

[0104] For example, if the battery 211 is a cylindrical battery, the side of the heat conducting portion 1112 facing the battery 211 can be coaxial with the battery 211. In other words, the curvature of the heat conducting portion 1112 can be concentric with the cylindrical battery, thereby achieving a better fixation of the battery 211.

[0105] In addition, the thickness of the heat conducting portion 1112 can be appropriately reduced to shorten the heat transfer distance, thereby reducing the energy consumed during the heat transfer process, thereby improving the heating efficiency of the battery pack 210 .

[0106] In an embodiment of the present application, a heat conducting portion 1112 is provided between two adjacent flow channel plates 1111, and a heating element 120 is attached to the heat conducting portion 1112 to form a coupled thermal management device, which can ensure both normal heating of the battery 211 under extremely cold working conditions and normal heat dissipation of the battery 211 under high temperature working conditions.

[0107] Furthermore, in cold conditions, the liquid heating function of flow channel 1101 and the heating function of heater 120 can be operated simultaneously, thereby ensuring improved heating rate and efficiency. In ultra-low temperature environments, if the coolant in flow channel 1101 freezes and loses fluidity, rendering the liquid heating function of flow channel 1101 inoperative, heater 120 can continue to operate, preventing the heating function from failing.

[0108] Figure 7 for Figure 6 Schematic diagram of the disassembled structure of the thermal management device shown. Figure 8 for Figure 6 The cross-sectional structural diagram of the thermal management device shown is shown. Figure 9 for Figure 6 The cross-sectional structural diagram of the thermal management device shown is shown without the battery pack and the heating element. Figure 10 for Figure 6 The schematic diagram of the structure of the battery fixing assembly and the flow channel sealing component in the thermal management device shown.

[0109] Reference Figures 6 to 10 As shown, in the embodiment of the present application, in the flow channel member 111 of the thermal management device 100, at least a portion of the flow channel plate 1111 may be provided with a protrusion 1113, with an accommodation cavity 1114 formed between two adjacent protrusions 1113. By forming the accommodation cavity 1114 between two adjacent protrusions 1113 on the flow channel plate 1111, it is possible to facilitate the placement of components such as the heating element 120.

[0110] In the embodiment of the present application, the heating element 120 can be disposed in the accommodating cavity 1114. In this case, the heating element 120 is embedded in the accommodating cavity 1114, and the heat of the heating element 120 can be directly transferred to the battery 211.

[0111] In addition, it can be understood that the heating element 120 is disposed in the accommodating cavity 1114 , and the surface area of ​​the accommodating cavity 1114 can be larger than the surface area of ​​the heating element 120 to achieve good assembly of the heating element 120 .

[0112] It should be noted that in the embodiment of the present application, the recessed depth of the accommodating cavity 1114 can be greater than the thickness of the heating element 120 to achieve good assembly of the heating element 120. The extra thickness can be filled with thermal conductive structural adhesive or thermal conductive adhesive to achieve contact between the battery 211 and the heating element 120 to achieve good thermal conductivity.

[0113] In some embodiments, the contour of the side of the heating element 120 facing the battery 211 may be adapted to the outer contour of the battery 211 .

[0114] It can be understood that in the embodiment of the present application, the heating element 120 and the flow channel 1101 can be arranged at intervals, that is, in the horizontal direction of the thermal management device 100, the heating element 120 and the flow channel 1101 exist at the same time.

[0115] In addition, in some embodiments, the flow rates of the flow channel 1101 opposite to the heating element 120 and other flow channels 1101 may be controlled to achieve a cooling and temperature-uniform effect on the battery 211 .

[0116] It should be noted that in the embodiment of the present application, the accommodating cavity 1114 for the embedded heating element 120 may not require the flow channel 1101 at the corresponding position on the flow channel element 111, so that the flow channel 1101 can be saved. If there are fewer flow channels 1101, the required inlet flow rate can be reduced accordingly. The reduced flow rate reduces the power of the cooling unit used for the flow channel 1101, thereby achieving energy saving.

[0117] Of course, the flow channel 1101 can also be continued to be set at the position corresponding to the accommodating cavity 1114 of the embedded heating element 120 on the flow channel element 111, so that the refrigerant temperature can be adjusted together with the flow channel 1101 and the heating element 120 to achieve the temperature adjustment of different positions of the battery 211.

[0118] In the embodiment of the present application, the thermal management device 100 may further include: a plurality of heat conducting members 130 , each compartment 112 may have a plurality of heat conducting members 130 , and the heat conducting members 130 are suitable for heat exchange with the battery 211 .

[0119] It should be noted that in some embodiments, the thermal conductive member 130 may be a thermally conductive structural adhesive, which is filled between two adjacent batteries 211 to further secure the batteries 211 and the flow channel member 111, thereby integrating the flow channel member 111 with the thermal conductive member 130. In this way, the thermal conductive member 130 can perform both thermal conductivity and connection functions.

[0120] In addition, in an embodiment of the present application, the thermal management device 100 may further include: a plurality of flow channel sealing members 141 , wherein a flow channel sealing member 141 may be provided at one end of each flow channel 1101 , and the flow channel sealing member 141 is used to seal the flowing medium in the flow channel 1101 .

[0121] It is understandable that the flow channel sealing member 141 can be set on the flow channel plate 1111 through a brazing process.

[0122] In the embodiment of the present application, a plurality of flow channel sealing components 141 disposed on the same flow channel component 111 may together form a flow channel sealing integrated component 140 .

[0123] In an embodiment of the present application, the thermal management device 100 may further include: a plurality of inlet and outlet devices 150, wherein an inlet and outlet device 150 may further be provided on one end of each flow channel component 111, and the inlet and outlet device 150 is used to allow the flowing medium in the flow channel 1101 to flow into or out of the flow channel component 111.

[0124] It is understood that the inlet and outlet devices 150 may be provided on the flow channel plate 1111 by a brazing process.

[0125] In the embodiment of the present application, the flow channel sealing member 141 and the inlet and outlet device 150 are arranged on the flow channel plate 1111 through a brazing process, which can realize an integrated design of the flow channel sealing member 141, the inlet and outlet device 150 and the flow channel member 111.

[0126] It should be noted that, in the embodiment of the present application, the flow channel sealing member 141 , the inlet and outlet device 150 , and the flow channel member 111 can be made of aluminum.

[0127] In one possible implementation, the flow channel member 111 may be formed by extrusion molding, and the flow channel sealing member 141 and the inlet and outlet device 150 may be formed by stamping molding or extrusion molding.

[0128] In addition, it should be noted that in the embodiment of the present application, the multiple inlet and outlet devices 150 can be located on the same side of the multiple flow channel components 111 (ie, the battery fixing assembly 110), so as to avoid the complexity of the pipeline inlet and outlet arrangement.

[0129] Specifically, in some embodiments, the inlet and outlet device 150 may include: a liquid inlet 151 and a liquid outlet 152, wherein the liquid inlet 151 is used to supply the flowing medium in the flow channel 1101 to flow into the flow channel component 111, and the liquid outlet 152 is used to supply the flowing medium in the flow channel 1101 to flow out of the flow channel component 111.

[0130] In addition, in some other embodiments, the thermal management device 100 may have multiple liquid inlets 151 and multiple liquid outlets 152 , and the multiple liquid inlets 151 and the multiple liquid outlets 152 may be integrated into one liquid inlet 151 and one liquid inlet 151 .

[0131] It should be noted that, in the embodiments of the present application, Figures 1 to 5The thermal management device 100 shown first assembles the battery 211 and the battery fixing assembly 110 by extrusion, then fills the space between two adjacent batteries 211 with thermal conductive structural adhesive to further tighten the thermal management device 100, then brazes the flow channel sealing member 141 and the inlet and outlet device 150 to the flow channel plate 1111 in the battery fixing assembly 110, and finally attaches the heating element 120 to the heat conducting portion 1112.

[0132] And for Figures 6 to 9 The thermal management device 100 shown first embeds the heater 120 into the accommodating cavity 1114 of the flow channel component 111, so that the battery fixing assembly 110 and the heater 120 become a whole. Then, the battery 211 and the battery fixing assembly 110 are assembled by extrusion, and then a thermal conductive structural adhesive is filled between two adjacent batteries 211 to further tighten the thermal management device 100. Finally, the flow channel sealing component 141 and the inlet and outlet device 150 are brazed to the battery fixing assembly 110.

[0133] In an embodiment of the present application, the thermal management device couples the heating function of the heating element 120 and the liquid cooling function or liquid heating function of the flow channel plate 1111 on one device, so that the heating operation of the heating element 120 can work simultaneously with the liquid heating operation or liquid cooling operation in the flow channel 1101 of the flow channel plate 1111. When the coolant in the flow channel 1101 of the flow channel plate 1111 fails to work under extremely cold conditions, the heating of the heating element 120 can continue to work, thereby avoiding the failure of liquid heating under extremely cold working conditions, and enabling the thermal management device 100 to take into account the dual thermal management functions of heating and heat dissipation.

[0134] In addition, it can be understood that the thermal management device 100 provided in the embodiment of the present application couples the heating function of the heating element 120 and the liquid cooling function or liquid heating function of the flow channel plate 1111 on one device, so that the heating operation of the heating element 120 can work simultaneously with the liquid heating operation or liquid cooling operation in the flow channel 1101 of the flow channel plate 1111, and can also improve the integration of the thermal management device 100, thereby improving the space utilization of the thermal management device 100.

[0135] The multiple flow channels 1101 and the multiple heating elements 120 are evenly distributed, which is beneficial to improving the heating speed and temperature uniformity of the thermal management device 100. The thermal management device 100 has a simple assembly process with fewer steps, which is beneficial to reducing assembly costs.

[0136] The present embodiment further provides a battery pack 200 , which may include a battery pack 210 and the aforementioned thermal management device 100 . The battery pack 210 may include a plurality of array-arranged batteries 211 , which are disposed in the thermal management device 100 .

[0137] By providing the thermal management device 100 in the battery pack 200 , the heating efficiency of the battery pack 210 can be ensured while ensuring the temperature uniformity of the battery group 210 , thereby ensuring the temperature performance of the battery pack 200 .

[0138] In addition, an embodiment of the present application further provides an electric device, which may at least include the above-mentioned battery pack 200.

[0139] The electrical equipment of the present invention can be conventional electrical equipment in the field, such as power equipment (such as electric vehicles), electronic equipment (such as computers, mobile phones, digital cameras, printers, fax machines, etc.), wearable devices (such as watches, bracelets, VR glasses, etc.), household appliances (such as air conditioners, refrigerators, washing machines, microwave ovens, etc.), etc., without special restrictions.

[0140] Taking the electrical equipment as a vehicle as an example, the vehicle may be a car, a bus, or a truck. For example, the vehicle may be an electric vehicle (EV), a pure electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle (NEV), or any vehicle with a battery.

[0141] The vehicle may further include a vehicle body, an axle, and a motor, wherein the battery pack, the axle, and the motor may all be disposed on the vehicle body. The battery pack may be electrically connected to the motor, which may be connected to the axle. The battery pack may power the motor to rotate, which in turn may drive the axle to rotate, thereby enabling the vehicle to travel.

[0142] The vehicle body may include a vehicle chassis and a vehicle body mounted on the chassis. The vehicle body may include a passenger compartment, which may include a driver's seat and passenger seats. The driver may operate the vehicle from the driver's seat. For example, the vehicle body may also include a steering wheel, clutch, brake, and other structural components that enable the vehicle to function fully, although this application does not limit this.

[0143] By providing the above-mentioned battery pack in an electrical device, the performance of the electrical device can be improved.

[0144] In the description of the present invention, 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" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as limiting the present invention.

[0145] In the description of the present invention, it is to be understood that the terms "may include" and "have" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0146] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," etc. should be interpreted broadly. For example, they may refer to fixed or removable connections, or integration. They may be directly connected or indirectly connected through an intermediate medium. They may also refer to internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances. Furthermore, the terms "first," "second," etc., etc., are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal management device, characterized in that: Used to manage the temperature of the battery, the thermal management device includes: A flow channel component, wherein the flow channel component has at least two flow channels; and a heating element, wherein the heating element is provided between two adjacent flow channels, and both the flow channels and the heating element are suitable for heat exchange with the battery.

2. The thermal management device according to claim 1, characterized in that include: A plurality of the flow channel members are arranged along a first direction, and two adjacent flow channel members arranged along the first direction are suitable for fixing the battery.

3. The thermal management device according to claim 2, characterized in that: There is a gap between two adjacent flow channel components, and the gap is suitable for accommodating batteries.

4. The thermal management device according to any one of claims 1 to 3, characterized in that: The flow channel component includes: a plurality of flow channel plates, each of which has the flow channel inside; A plurality of the flow channel plates are stacked in the second direction.

5. The thermal management device according to claim 4, characterized in that: The contour of the side of the flow channel plate facing the battery is adapted to the outer contour of the battery.

6. The thermal management device according to claim 3, characterized in that The flow channel component further includes: The mounting portion is located between two adjacent flow channel plates, and the heating element is arranged on the mounting portion.

7. The thermal management device according to claim 6, characterized in that: The mounting portion is a heat-conducting portion, and the heating element is arranged on a surface of the heat-conducting portion facing away from the interval; or a heat-conducting portion is arranged between the mounting portion and the heating element.

8. The thermal management device according to claim 7, characterized in that: The contour of a side of the heat conducting portion facing the battery is adapted to the outer contour of the battery.

9. The thermal management device according to claim 8, characterized in that: When the battery is a cylindrical battery, the heat conducting portion is coaxially arranged with the battery on a side facing the battery.

10. The thermal management device according to claim 3, characterized in that: In the flow channel member, at least part of the flow channel plates are provided with protrusions, and an accommodating cavity is formed between two adjacent protrusions; The heating element is disposed in the accommodating cavity.

11. The thermal management device according to claim 10, characterized in that: The contour of a side of the heating element facing the battery is adapted to the outer contour of the battery.

12. The thermal management device according to claim 10, characterized in that: The recessed depth of the accommodating cavity is greater than the thickness of the heating element.

13. The thermal management device according to claim 3, characterized in that Also includes: A plurality of heat-conducting members; each of the intervals has a plurality of the heat-conducting members, and the heat-conducting members are suitable for heat exchange with the battery.

14. The thermal management device according to any one of claims 1 to 3, characterized in that: Also includes: Multiple flow channel sealing parts; The flow channel sealing member is provided on one end of each flow channel to seal the flowing medium in the flow channel.

15. The thermal management device according to claim 14, characterized in that: The plurality of flow channel sealing components arranged on the same flow channel component together form a flow channel sealing integrated component.

16. The thermal management device according to any one of claims 1 to 3, characterized in that: Also includes: Multiple inlet and outlet devices; The inlet and outlet devices are also provided on one end of each of the flow channel components to allow the flowing medium in the flow channel to flow into or out of the flow channel component.

17. The thermal management device according to claim 16, characterized in that: The plurality of inlet and outlet devices are located on the same side of the plurality of flow channel components.

18. The thermal management device according to any one of claims 1 to 3, characterized in that: The dimension of the heating element in the height direction of the battery may be 30%-50% of the height of the battery.

19. The thermal management device according to any one of claims 1 to 3, characterized in that: A guide strip is arranged in the flow channel.

20. A battery pack, characterized in that: include: A battery pack and a thermal management device according to any one of claims 1 to 19; The battery pack includes a plurality of batteries arranged in an array, and the plurality of batteries arranged in an array are disposed in the thermal management device.

21. An electrical device, characterized in that: include: The battery pack according to claim 20.

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