Heating module, battery pack and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and provides a heating module, a battery pack and electric equipment. The heating module is used for heating a to-be-heated component, the to-be-heated component is provided with a plurality of to-be-heated areas, the heating module comprises a first heating assembly, the first heating assembly is used for being connected with the top face or the bottom face of the to-be-heated component, and the first heating assembly comprises a plurality of first heating parts; the first heating parts are used for being arranged in one-to-one correspondence with at least part of the multiple to-be-heated areas; the first heating assembly is in an irregular shape. The heating module provided by the utility model can be relatively low in cost and relatively high in heating efficiency.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a heating module, a battery pack, and an electrical device. Background Technology

[0002] Battery packs are used to provide power to electric vehicles and other electrical equipment. Battery packs have low charging and discharging efficiency at low ambient temperatures. Heating films can be used to heat the battery pack, ensuring its temperature meets the requirements for efficient charging and discharging.

[0003] A battery pack contains multiple cells arranged side-by-side. A heating film can be placed between adjacent cells, or between two or three cells. Placing heating films between cells improves the heating efficiency of the battery pack. However, this increases the cost due to the large number of heating films required. Alternatively, a heating film can be placed on the top surface of the cells. This reduces the amount of heating film needed and lowers the overall cost, but it also results in uneven heating, leading to larger temperature differences and affecting the battery pack's charge and discharge efficiency.

[0004] In related technologies, it is difficult for heating structures to simultaneously achieve both low cost and high heating efficiency. Utility Model Content

[0005] This application provides a heating module, a battery pack, and an electrical device, wherein the heating module can combine low cost and high heating efficiency.

[0006] This application provides a heating module for heating a component to be heated. The component to be heated has multiple areas to be heated. The heating module includes: a first heating component for connecting to the top or bottom surface of the component to be heated; the first heating component includes multiple first heating parts, and the multiple first heating parts correspond one-to-one with at least a portion of the multiple areas to be heated.

[0007] In one possible implementation, the heating module provided in this application has a plurality of first heating elements arranged such that their orthographic projections on the top or bottom surface of the component to be heated coincide with a plurality of areas to be heated.

[0008] In one possible implementation, the heating module provided in this application has a first heating part that is H-shaped, L-shaped, C-shaped, or □-shaped.

[0009] In one possible implementation, the heating module provided in this application further includes a second heating component, which is used to connect to at least one side of the component to be heated.

[0010] In one possible implementation, the heating module provided in this application further includes a third heating component, which is used to connect with the bottom surface of the component to be heated, and a first heating component is used to connect with the top surface of the component to be heated.

[0011] In one possible implementation, the heating module provided in this application further includes a third heating component, which is used to connect with the bottom surface of the component to be heated, and a first heating component is used to connect with the top surface of the component to be heated.

[0012] In one possible implementation, the heating module provided in this application includes at least two third heating parts, which are arranged opposite to each other and positioned at both ends of the component to be heated on the bottom surface of the component.

[0013] In one possible implementation, the heating module provided in this application further includes a controller, wherein the first heating component, the second heating component, and the third heating component are all electrically connected to the controller; the controller is used to acquire first data of the top surface of the component to be heated, second data of the side surface of the component to be heated, and third data of the bottom surface of the component to be heated; the controller is used to control the opening or closing of the first heating component, the opening or closing of the second heating component, and the opening or closing of the third heating component according to the first data, the second data, and the third data, respectively.

[0014] In one possible implementation, the heating module provided in this application includes a first heating component comprising a first heating core and a first insulating layer connected to both sides of the first heating core; and / or a second heating component comprising a second heating core and a second insulating layer connected to both sides of the second heating core; and / or a third heating component comprising a third heating core and a third insulating layer connected to both sides of the third heating core.

[0015] In one possible implementation, the heating module provided in this application has a second insulating layer with a strength greater than that of the first insulating layer; and / or, a third insulating layer with a strength greater than that of the first insulating layer.

[0016] In one possible implementation, the heating module provided in this application has a second insulating layer formed of silicone resin or fluororubber, or the second insulating layer includes a second insulating layer substrate and a second reinforcing coating coated on the second insulating layer substrate, the second reinforcing coating being opposite to the second heating core; and / or, the third insulating layer is an insulating layer formed of carbon fiber, carbon crystal film or graphene, or the third insulating layer includes a third insulating layer substrate and a third reinforcing coating coated on the third insulating layer substrate, the third reinforcing coating being opposite to the third heating core.

[0017] This application also provides a battery pack, including a housing, a component to be heated, and the aforementioned heating module, wherein the heating module and the component to be heated are located in the housing, and a first heating component is connected to the top or bottom surface of the component to be heated.

[0018] In one possible implementation, the battery pack provided in this application includes a housing comprising a bottom plate, a side plate, and a top plate; the top surface of the component to be heated faces the top plate, the bottom surface of the component to be heated faces the bottom plate, and the side surface of the component to be heated faces the side plate; a first heating component is connected to the top surface of the component to be heated; the heating module further includes a second heating component and a third heating component, the second heating component being connected to the side surface of the component to be heated; and the third heating component being connected to the bottom surface of the component to be heated.

[0019] In one possible implementation, the battery pack provided in this application has a battery assembly as the component to be heated, and the battery assembly includes multiple cells arranged along a first direction.

[0020] In one possible implementation, the battery pack provided in this application has a first heating component attached to a top plate; and / or a mounting groove on a bottom plate, with a third heating component located in the mounting groove.

[0021] In one possible implementation, the battery pack provided in this application further includes an end plate, which is disposed between the second heating component and the side plate. The second heating component is attached to the end plate, and the side of the end plate facing away from the second heating component has a plurality of spaced grooves.

[0022] This application also provides an electrical device including at least one of the above-described battery packs.

[0023] The heating module provided in this application includes a first heating component for connection to the top or bottom surface of the component to be heated. The first heating component comprises multiple first heating elements, each corresponding one-to-one with at least a portion of a plurality of areas to be heated. By providing first heating elements only on the areas to be heated, the number of first heating components can be reduced, thereby lowering the cost of the heating module. Furthermore, by providing first heating elements only on the areas to be heated, the heating of these areas can be targeted, while areas that do not require heating are left unheated. This allows for targeted heating of the battery assembly, increasing the temperature rise rate of the battery assembly, and resulting in higher heating efficiency for the heating module. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram illustrating one possible arrangement of the heating film in a battery pack within a related technology.

[0026] Figure 2 This is a schematic diagram illustrating another configuration of the heating film in a battery pack in related technologies.

[0027] Figure 3 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0028] Figure 4 This is an exploded view of the battery pack provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of the first heating component and the battery component in the battery pack provided in the embodiments of this application;

[0030] Figure 6a A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 1 ;

[0031] Figure 6b A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 2 ;

[0032] Figure 6c A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 3 ;

[0033] Figure 6d A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 4 ;

[0034] Figure 7 This is a schematic diagram of the structure of the battery pack housing and the third heating component provided in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the structure of the battery pack mid-end plate and the second heating assembly provided in an embodiment of this application;

[0036] Figure 9 for Figure 8 An explosion diagram;

[0037] Figure 10 for Figure 9 Another view;

[0038] Figure 11 A schematic diagram showing the electrical connection relationship between the controller and each heating component in the battery pack provided in an embodiment of this application;

[0039] Figure 12An exploded view of the first heating component in the battery pack provided in an embodiment of this application;

[0040] Figure 13 An exploded view of the second heating component in the battery pack provided in an embodiment of this application;

[0041] Figure 14 An exploded schematic diagram of the third heating component in the battery pack provided in an embodiment of this application;

[0042] Figure 15 A flowchart of a battery pack thermal management method provided in an embodiment of this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] 10-Battery pack; 11-Casing; 12-Battery cell; 13-Heating film;

[0045] 100-battery pack;

[0046] 110 - Shell; 111 - Base plate; 1111 - Mounting groove; 112 - Side plate; 113 - Top plate; 114 - Receiving cavity; 1141 - Sub-receiving cavity; 115 - Partition;

[0047] 120 - Battery assembly; 120a - Top surface; 120b - Bottom surface; 120c - Side surface; 120d - Area to be heated; 121 - Battery cell;

[0048] 130 - First heating assembly; 130a - First heating part; 131 - First heating core; 1311 - First heating core body; 1312 - First lead wire; 132 - First insulating layer; 133 - First connector;

[0049] 140 - Second heating element; 141 - Second heating core; 1411 - Second heating core body; 1412 - Second lead wire; 142 - Second insulating layer; 1421 - Second insulating layer substrate; 1422 - Second reinforcing coating; 143 - Second connector;

[0050] 150 - Third heating assembly; 150a - Third heating section; 151 - Third heating core; 1511 - Third heating core body; 1512 - Third lead wire; 152 - Third insulation layer; 1521 - Third insulation layer substrate; 1522 - Third reinforcing coating; 153 - Third connector;

[0051] 160 - Thermal conductive adhesive;

[0052] 170 - Controller;

[0053] 180 - End plate; 181 - Groove; 182 - Slot;

[0054] X - First direction;

[0055] Y - Second direction;

[0056] Z - Third-party orientation. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0061] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such as a process, method, system, product, or maintenance tool that includes a series of steps or units, not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or maintenance tool.

[0062] Battery packs are used to provide power to electric vehicles and other electrical equipment. Battery packs have low charging and discharging efficiency at low ambient temperatures. Heating films can be used to heat the battery pack, ensuring its temperature meets the requirements for efficient charging and discharging.

[0063] Figure 1 This is a schematic diagram illustrating one possible arrangement of the heating film in a battery pack within a related technology. Figure 2 This is a schematic diagram illustrating another configuration of the heating film in a battery pack in related technologies.

[0064] See Figure 1 and Figure 2 As shown, the battery pack 10 includes a housing 11 and a plurality of battery cells 12, which are arranged side-by-side within the housing 11. Figure 1 The housing 11 is not shown in the diagram.

[0065] Please continue reading Figure 1 A heating film 13 can be placed between two adjacent battery cells 12, or spaced two or three battery cells 12 apart. Figure 1 In the battery pack 10, a heating film 13 is placed every two or three battery cells 12. By placing heating films 13 between the battery cells 12, the heating efficiency of the battery pack 10 can be improved. However, the large number of heating films 13 used increases the cost of the battery pack 10. Furthermore, the battery cells 12 near the sides of the casing 11 are more affected by temperature, while those in the middle area are less affected. When multiple heating films 13 are heated, the temperature rise of the battery cells 12 on the sides is higher, and the temperature rise of the battery cells 12 in the middle area is also higher, resulting in a larger temperature difference throughout the battery pack 10.

[0066] Please continue reading Figure 2 As shown, a heating film 13 can also be provided on the top surface of multiple battery cells 12. When the heating film 13 is provided on the top surface of the battery cell 12, the amount of heating film 13 used is small, which can reduce the cost of the battery pack 10. However, when the heating film 13 is provided on the top, the heating is uneven, resulting in a large temperature difference when the battery pack 10 is heated, which affects the charging and discharging efficiency of the battery pack 10.

[0067] In related technologies, it is difficult for the heating structure of a battery pack to achieve both low cost and high heating efficiency.

[0068] Based on this, embodiments of this application provide a heating module, a battery pack, and an electrical device, wherein the heating module can have both low cost and high heating efficiency.

[0069] Figure 3 This is a schematic diagram of the battery pack structure provided in an embodiment of this application; Figure 4 This is an exploded view of the battery pack provided in an embodiment of this application.

[0070] See Figure 3 and Figure 4 As shown, the battery pack 100 provided in this application includes: a housing 110, a component to be heated, and a heating module. The component to be heated is located in the housing 110, and the first heating component 130 is connected to the top surface 120a or the bottom surface 120b of the component to be heated.

[0071] The housing 110 includes a bottom plate 111, a side plate 112, and a top plate 113. The top surface 120a of the component to be heated faces the top plate 113, the bottom surface 120b of the component to be heated faces the bottom plate 111, and the side surface 120c of the component to be heated faces the side plate 112. The heating module includes a first heating component 130, a second heating component 140, and a third heating component 150. The first heating component 130 is located between the top surface 120a of the component to be heated and the top plate 113, the second heating component 140 is located between the side surface 120c of the component to be heated and the side plate 112, and the third heating component 150 is located between the bottom surface 120b of the component to be heated and the bottom plate 111.

[0072] The component to be heated can be a controller, connecting copper busbars, or battery assembly 120, etc., which require heating when operating in a cold environment. In the following embodiments, the component to be heated is described as battery assembly 120. Battery assembly 120 is located in housing 110 and includes a plurality of battery cells 121 arranged along a first direction X.

[0073] In one possible approach, the heating module may include a first heating component 130 disposed on one side of the top surface 120a of the battery assembly 120.

[0074] Specifically, the housing 110 can be a cuboid structure, including a bottom plate 111, side plates 112, and a top plate 113. The side plates 112 surround the periphery of the bottom plate 111 to form a receiving cavity 114, in which the battery assembly 120 is located, and the top plate 113 covers the receiving cavity 114. The length, height, and width directions of the housing 110 are shown in the first direction X, the second direction Y, and the third direction Z, respectively.

[0075] The receiving cavity 114 can accommodate one battery assembly 120, or two or more battery assemblies 120. Figure 4 The image schematically shows two battery assemblies 120. The housing 110 also includes a partition 115 that divides the receiving cavity 114 into two sub-receiving cavities 1141 arranged along a first direction X, each sub-receiving cavity 1141 containing a battery assembly 120.

[0076] The battery assembly 120 includes a plurality of battery cells 121, which can be arranged side by side along a first direction X. The side of the plurality of battery cells 121 facing the top plate 113 together forms the top surface 120a of the battery assembly 120, and the side of the plurality of battery cells 121 facing the bottom plate 111 together forms the bottom surface 120b of the battery assembly 120. Two battery cells 121 located on opposite sides along the first direction X form two side surfaces 120c of the battery assembly 120 with their sides facing away from each other.

[0077] The first heating component 130, the second heating component 140, and the third heating component 150 can all be heating films.

[0078] The specific structure of the first heating component 130 will be described below.

[0079] The first heating component 130 can be attached to the top surface 120a or the bottom surface 120b via thermally conductive adhesive 160 to connect with the top surface 120a of the battery assembly 120. The top surface 120a (or bottom surface 120b) of the battery assembly 120 has multiple areas 120d to be heated. The first heating component 130 includes multiple first heating portions 130a, each corresponding to at least a portion of one of the multiple areas 120d to be heated. When the first heating component 130 generates heat, the heat can be transferred to the top surface 120a of the battery assembly 120 via the thermally conductive adhesive 160, thereby heating the battery assembly 120 from the top surface 120a side. Similarly, the heat can be transferred to the bottom surface 120b of the battery assembly 120 via the thermally conductive adhesive 160, thereby heating the battery assembly 120 from the bottom surface 120b side. The following description will be based on the example where the first heating component 130 is disposed on the top surface 120a of the battery assembly 120.

[0080] Specifically, the heat leakage varies across different areas on the top surface 120a of the battery module 120. For example, some areas on the top surface 120a have higher heat leakage than others. The areas with higher heat leakage require heating and are designated as the heating area 120d, while the areas with lower heat leakage do not require heating. When the top surface 120a of the battery module 120 needs heating, the first heating element 130a can be provided only on the heating area 120d, while the areas with lower heat leakage do not require the first heating element 130a. By providing the first heating element 130a only on the heating area 120d, the amount of the first heating component 130 can be reduced, thereby lowering the cost of the heating module. By providing the first heating element 130a only on the heating area 120d, the heating of the heating area 120d can be targeted, while areas that do not need heating are left unheated. This allows for targeted heating of the battery module, increasing the temperature rise rate of the battery module 120, and resulting in higher heating efficiency for the heating module.

[0081] Since the shape of the area to be heated 120d is usually irregular, the first heating element 130a can be set to an irregular shape that matches the shape of the area to be heated 120d. This can further reduce the amount of the first heating component 130 and further improve the heating efficiency of the heating module for the cell assembly 120.

[0082] Figure 5 This is a schematic diagram of the structure of the first heating component and the battery component in the battery pack provided in the embodiments of this application.

[0083] See Figure 5 As shown, there are multiple first heating parts 130a, and the multiple first heating parts 130a are configured to correspond one-to-one with the irregular heating area 120d on the top surface 120a of the battery assembly 120.

[0084] The temperature varies at different points on the top surface 120a of the battery module 120. Low-temperature areas within the battery module 120 can be identified through simulation tests in a low-temperature environment; these low-temperature areas are designated as the heating areas 120d. Figure 5 The area to be heated, 120d, is shown in bold dashed lines. For example, simulation experiments show that the temperature at both ends of the battery assembly 120 along the first direction X and the third direction Z is lower. Two first heating elements 130a can be provided on the top surface 120a, with each first heating element 130a corresponding to one of the areas to be heated, thereby further reducing the amount of first heating elements 130 used.

[0085] Please continue reading Figure 5 As shown, multiple first heating component sections 130a are configured such that their orthographic projections on the top surface 120a or bottom surface 120b of the battery assembly 120 coincide with multiple areas 120d to be heated.

[0086] In other words, the area of ​​the first heating part 130a is the same as the area of ​​the area to be heated 120d. Therefore, while ensuring the heating effect, the amount of the first heating component 130 can be reduced as much as possible.

[0087] Figure 6a A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 1 ; Figure 6b A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 2 ; Figure 6c A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 3 ; Figure 6d A schematic diagram of the structure of the first heating element in the battery pack provided in this application embodiment. Figure 4 .

[0088] See Figures 6a to 6d As shown, the area to be heated 120d can be H-shaped, L-shaped, C-shaped, or U-shaped. Therefore, the projection shape of the first heating part 130a along the second direction Y on the battery assembly 120 is H-shaped, L-shaped, C-shaped, or U-shaped. The first heating part 130a is parallel to the top surface 120a, that is, the first heating part 130a can be H-shaped, L-shaped, C-shaped, or U-shaped.

[0089] exist Figure 6a The image shows two I-shaped first heating elements 130a. The two I-shaped first heating elements 130a are disposed on the top surface 120a of one of the battery assemblies 120. Figure 6b The image shows two L-shaped first heating elements 130a. The two L-shaped first heating elements 130a are disposed on the top surface 120a of one of the battery assemblies 120. Figure 6c The image shows two C-shaped first heating elements 130a. The two C-shaped first heating elements 130a are disposed on the top surface 120a of one of the battery assemblies 120. Figure 6d The image shows a U-shaped first heating element 130a, which is disposed on the top surface 120a of one of the battery assemblies 120.

[0090] In another possible implementation, the heating module may further include a second heating component 140, which is located along a first direction X on at least one side 120c of the battery assembly 120 and is connected to the side 120c of the battery assembly 120.

[0091] A second heating component 140 is provided on each of the two sides 120c of the battery assembly 120. That is, the second heating component 140 is located between the side 120c and the side plate 112 of the battery assembly 120. The second heating component 140 can directly contact the side 120c of the battery assembly 120, or it can be bonded to the side 120c of the battery assembly 120 using thermally conductive adhesive. When the second heating component 140 generates heat, the heat can be transferred to the side 120c of the battery assembly 120, thereby heating the battery assembly 120 from the side 120c and further improving the heating efficiency of the heating module.

[0092] In another possible implementation, the heating module may further include a third heating component 150 located on the bottom surface 120b of the battery assembly 120 and connected to the bottom surface 120b of the battery assembly 120. In this implementation, the first heating component 130 may be connected to the top surface 120a of the battery assembly 120.

[0093] The third heating component 150 can be disposed on one side of the bottom surface 120b of the battery assembly 120, that is, the third heating component 150 is located between the bottom surface 120b of the battery assembly 120 and the base plate 111. The third heating component 150 can be in direct contact with the bottom surface 120b of the battery assembly 120, or it can be attached to the bottom surface 120b of the battery assembly 120 by means of thermally conductive adhesive. When the third heating component 150 generates heat, the heat from the third heating component 150 can be transferred to the bottom surface 120b of the battery assembly 120, thereby heating the battery assembly 120 from one side of the bottom surface 120b.

[0094] The first heating element 130, the second heating element 140, and the third heating element 150 heat the battery assembly 120 from three different surfaces, resulting in high heating efficiency for the battery assembly 120. When the first heating element 130 and the third heating element 150 heat the battery assembly 120 from the top surface 120a and the bottom surface 120b respectively, heat can be transferred simultaneously through the cells 121 or the gaps between adjacent cells 121, resulting in high heat transfer efficiency and further improving the heating efficiency of the first heating element 130 and the third heating element 150. Compared to related technologies... Figure 1 Regarding the arrangement of heating films between battery cells, the amount of the first heating element 130 and the third heating element 150 is also relatively small. The second heating element 140 is only provided on both sides 120c of the battery assembly 120, and the amount of the second heating element 140 is also relatively small, thereby reducing the cost of the heating elements.

[0095] It should be noted that in some battery cell assemblies 120, a first heating component 130 may be provided on the top surface 120a and a second heating component 140 may be provided on the side surface 120c; in other battery cell assemblies 120, a first heating component 130 may be provided on the top surface 120a and a third heating component 150 may be provided on the bottom surface 120b; and in still other battery cell assemblies 120, a first heating component 130 may be provided on the top surface 120a, a second heating component 140 may be provided on the side surface 120c and a third heating component 150 may be provided on the bottom surface 120b.

[0096] Figure 7 This is a schematic diagram of the structure of the housing and the third heating component in the battery pack provided in an embodiment of this application.

[0097] See Figure 7 As shown, the third heating assembly 150 includes at least two third heating parts 150a, which are arranged opposite each other and positioned at both ends of the bottom surface 120b of the battery assembly 120.

[0098] For example, simulation tests show that the temperature at both ends of the battery assembly 120 along the first direction X and the third direction Z is lower. The third heating assembly 150 includes at least two third heating parts 150a. Each battery assembly 120 can be provided with a third heating part 150a at both ends along the third direction Z. Therefore, the third heating assembly 150 does not need to cover the entire bottom surface 120b. While ensuring the heating effect, the amount of the third heating assembly 150 can be reduced.

[0099] In one possible implementation, a plurality of first heating components 130 are attached to the top plate 113.

[0100] In other words, the multiple first heating elements 130a in the first heating assembly 130 are all attached to the top plate 113. For example, the multiple first heating elements 130a can be bonded to the top plate 113 with an adhesive, thereby attaching to the top plate 113. When the temperature of one of the first heating elements 130a is higher, the heat of this first heating element 130a can be transferred to the top plate 113, and then transferred to the other first heating elements 130a through the top plate 113. As a result, the temperature of the multiple first heating elements 130a can be made more uniform, and the heat transferred from the first heating elements 130a to the different heating areas 120d of the battery assembly 120 is also more uniform. Furthermore, it can also prevent the first heating element 130a from being damaged due to excessive temperature.

[0101] The base plate 111 serves as the load-bearing plate for the battery assembly 120, and the weight of the battery assembly 120 exerts pressure on the base plate 111. Therefore, the third heating component 150, which is disposed between the base plate 111 and the bottom surface 120b of the battery assembly 120, also bears the weight of the battery assembly 120.

[0102] Please continue reading Figure 7 As shown, in one possible implementation, the base plate 111 has a mounting groove 1111, and the third heating assembly 150 is located in the mounting groove 1111.

[0103] For example, by providing two mounting slots 1111 on the base plate 111, the two third heating parts 150a in the third heating assembly 150 can be respectively embedded in different mounting slots 1111. The surface of the third heating part 150a can be flush with the surface of the base plate 111. Thus, the load on the third heating assembly 150 can be reduced or eliminated, and the third heating assembly 150 can be prevented from being damaged due to stress.

[0104] Figure 8 This is a schematic diagram of the structure of the battery pack mid-end plate and the second heating assembly provided in an embodiment of this application; Figure 9 for Figure 8 An explosion diagram; Figure 10 for Figure 9 Another viewpoint.

[0105] See Figure 1 , Figures 8 to 10 As shown, the battery pack 100 also includes an end plate 180, which is disposed between the second heating component 140 and the side plate 112. The second heating component 140 is attached to the end plate 180, and the side of the end plate 180 facing away from the second heating component 140 has a plurality of spaced grooves 181.

[0106] Specifically, the end plate 180 has a plurality of grooves 181 to form a honeycomb structure. The grooves 181 can block the transmission of heat, thereby reducing the heat transferred to the side plate 112 through the end plate 180, so that more heat from the second heating component 140 can be transferred to the battery component 120.

[0107] Figure 11 This is a schematic diagram showing the electrical connection relationship between the controller and each heating component in the battery pack provided in an embodiment of this application.

[0108] See Figure 11 As shown, the battery pack 100 also includes a controller 170. The first heating component 130, the second heating component 140, and the third heating component 150 are all electrically connected to the controller 170. The controller 170 is used to acquire first data of the top surface 120a of the battery component 120, second data of the side surface 120c of the battery component 120, and third data of the bottom surface 120b of the battery component. The controller 170 controls the opening or closing of the first heating component 130, the second heating component 140, and the third heating component 150 respectively according to the first data, the second data, and the third data.

[0109] For example, when charging in a low-temperature environment, the controller 170 acquires first data, second data, and third data, and analyzes them to determine that the temperature of all surfaces of the battery assembly 120 is low. The controller 170 can then control the first heating component 130, the second heating component 140, and the third heating component 150 to all turn on, so that the first heating component 130, the second heating component 140, and the third heating component 150 all heat the battery assembly 120, thereby increasing the temperature rise rate of the battery assembly 120 and improving the charging efficiency of the battery assembly 120. As another example, when driving in a low-temperature environment, the engine generates some heat, which can be transferred to the battery assembly 120 to heat it. At this time, the controller 170 acquires the first, second, and third data, and analyzes them to determine that the temperature of the top surface 120a of the battery assembly 120 is relatively low. The controller 170 can then control the first heating element 130 to turn on, and the second heating element 140 and the third heating element 150 to turn off, thus meeting the discharge requirements of the battery assembly 120. By individually controlling the first heating element 130, the second heating element 140, and the third heating element 150 according to different usage environments, the power consumption of the heating elements can be reduced.

[0110] Figure 12 An exploded view of the first heating component in the battery pack provided in an embodiment of this application.

[0111] See Figure 12 As shown, the first heating component 130 includes a first heating core 131 and a first insulating layer 132 located on both sides of the first heating core 131. The first heating core 131 is electrically connected to the controller 170.

[0112] The first heating element 131 includes a first heating element body 1311 and a first lead 1312. The first heating element body 1311 can be a heating wire, and one end of the first lead 1312 is electrically connected to the first heating element body 1311. The first heating assembly 130 also includes a first connector 133, and the other end of the first lead 1312 is electrically connected to the first connector 133. The first heating element body 1311 is electrically connected to the controller 170 via the first lead 1312 and the first connector 133.

[0113] The first heating core body 1311 has a first insulating layer 132 attached to both sides. The first insulating layer 132 can be a polyimide film (PI film), which has high temperature resistance and good insulation effect.

[0114] Figure 13 An exploded view of the second heating component in the battery pack provided in an embodiment of this application.

[0115] See Figure 13 As shown, the second heating component 140 includes a second heating core 141 and a second insulating layer 142 located on both sides of the second heating core 141. The second heating core 141 is electrically connected to the controller 170. The strength of the second insulating layer 142 is greater than the strength of the first insulating layer 132.

[0116] The second heating element 141 includes a second heating element body 1411 and a second lead 1412. The second heating element body 1411 can be a heating wire, and one end of the second lead 1412 is electrically connected to the second heating element body 1411. The second heating assembly 140 also includes a second connector 143, and the other end of the second lead 1412 is electrically connected to the second connector 143. The second heating element body 1411 is electrically connected to the controller 170 via the second lead 1412 and the second connector 143.

[0117] The second heating element body 1411 has a second insulating layer 142 attached to both sides. Since the second heating component 140 is located between the side plate 112 and the side surface 120c of the battery assembly 120, when the battery assembly 120 is installed into the housing 110, the side surface 120c of the battery assembly 120 will come into contact with the second heating component 140, generating friction. Therefore, the strength of the second insulating layer 142 is greater than that of the first insulating layer 132, giving the second insulating layer 142 higher wear resistance and puncture resistance, thereby preventing damage to the second insulating layer 142 during battery assembly 120 installation.

[0118] Please continue reading Figure 9 As shown, 180112 has a slot 182. The position where the second lead 1412 is connected to the second heating core body 1411 can be set in the slot 182, thereby reducing the interference of the second lead 1412 with the battery assembly 120.

[0119] In one possible implementation, the second insulating layer 142 is an insulating layer formed of silicone resin or fluororubber.

[0120] In addition to high temperature resistance and good insulation, silicone resin or fluororubber also has high strength. Therefore, the second insulation layer 142 formed by silicone resin or fluororubber has greater strength, which makes the second insulation layer 142 have higher wear resistance and puncture resistance.

[0121] Please continue reading Figure 13As shown, in another possible embodiment, the second insulating layer 142 includes a second insulating layer substrate 1421 and a second reinforcing coating 1422 coated on the second insulating layer substrate 1421, the second reinforcing coating 1422 being away from the second heating core 141.

[0122] The second insulating layer substrate 1421 can be a PI film, and the second reinforcing coating 1422 can be a coating of ceramic materials such as alumina (Al2O3) or zirconium oxide (ZrO2) disposed away from the second heating core 141, in order to increase the strength of the PI film, thereby making the second insulating layer 142 have higher wear resistance and puncture resistance.

[0123] Figure 14 An exploded schematic diagram of the third heating component in the battery pack provided in an embodiment of this application.

[0124] See Figure 14 As shown, the third heating component 150 includes a third heating core 151 and a third insulating layer 152 located on both sides of the third heating core 151. The third heating core 151 is electrically connected to the controller. The strength of the third insulating layer 152 is greater than the strength of the first insulating layer 132.

[0125] The third heating element 151 includes a third heating element body 1511 and a third lead 1512. The third heating element body 1511 can be a heating wire, and one end of the third lead 1512 is electrically connected to the third heating element body 1511. The third heating assembly 150 also includes a third connector 153, and the other end of the third lead 1512 is electrically connected to the third connector 153. The third heating element body 1511 is electrically connected to the controller 170 via the third lead 1512 and the third connector 153.

[0126] A third insulating layer 152 is attached to both sides of the third heating element body 1511. Since the third heating component 150 is located between the base plate 111 and the bottom surface 120b of the battery assembly 120, when the battery assembly 120 is installed into the housing 110, due to dimensional tolerances, if the surface of the third heating component 150 located in the mounting groove 1111 is slightly higher than the plane of the base plate 111, the third heating component 150 will still contribute some of the weight of the battery assembly 120. Therefore, making the strength of the third insulating layer 152 greater than that of the first insulating layer 132 allows the second insulating layer 142 to have higher wear resistance and compressive strength, thereby preventing the battery assembly 120 from damaging the third heating component 150.

[0127] In one possible implementation, the third insulating layer 152 is an insulating layer formed of carbon fiber, carbon crystal film, or graphene.

[0128] In addition to good thermal conductivity, carbon fiber, carbon crystal film, or graphene also have high mechanical strength and wear resistance. The third insulating layer 152 formed by carbon fiber, carbon crystal film, or graphene has greater strength, which makes the third insulating layer 152 have higher wear resistance and compressive strength.

[0129] Please continue reading Figure 14 As shown, in another possible embodiment, the third insulating layer 152 includes a third insulating layer substrate 1521 and a third reinforcing coating 1522 coated on the third insulating layer substrate 1521, the third reinforcing coating 1522 being away from the third heating core 151.

[0130] The third insulating layer substrate 1521 can be a PI film, and the third reinforcing coating 1522 can be a coating of ceramic materials such as alumina (Al2O3) or zirconium oxide (ZrO2) that are disposed away from the third heating core 151, in order to increase the strength of the PI film, thereby making the third insulating layer 152 have higher wear resistance and compressive strength.

[0131] In one possible implementation, the first heating component 130, the second heating component 140, and the third heating component 150 may be cut or bent to fit the outer surface of the battery assembly 120.

[0132] The second heating component 140 will be used as an example for explanation. The second heating component 140 may include a second heating core 141 made of a flexible conductive material and a second insulating layer 142 made of a polymer thermoplastic substrate. Therefore, the second heating component 140 can be freely bent and cut to the required size, allowing it to maintain good electrical and thermal conductivity while being bent or cut into different shapes according to the different shapes of the battery component 120 to effectively cover different areas of the side 120c of the battery component 120. This allows it to adapt to various geometric configurations within the battery pack 100.

[0133] Figure 15 A flowchart of a battery pack thermal management method provided in an embodiment of this application.

[0134] See Figure 15 As shown in the embodiments of this application, a battery pack thermal management method is also provided, including:

[0135] S101, Data Collection and Preprocessing.

[0136] First, key information such as temperature, temperature difference, ambient temperature, remaining charge (SOC), state of health (SOH), and operating conditions were collected from 100 different locations on the battery pack as input. The raw data underwent preprocessing such as cleaning and standardization to ensure data quality. Then, useful features were extracted from the raw data to prepare for subsequent analysis.

[0137] S102. Data analysis: Based on the analysis results, determine whether to use the standard heating strategy or train a machine learning model, and output a preliminary heating strategy.

[0138] Based on historical and collected data, an analysis is performed to determine whether a machine learning model needs to be trained for customized predictions. If the analysis determines that a customized strategy is to be adopted, the machine learning model is trained using the feature data, and a preliminary heating strategy is output after the machine learning model is trained. Alternatively, the preliminary heating strategy is directly output.

[0139] S103. Optimize the initial heating strategy. Analyze the temperature differences in various parts of the battery, determine the priority of heating requirements, and optimize the initial heating strategy based on factors such as safety and efficiency.

[0140] S104, Output heating strategy. Formulate specific on / off strategies for heating components in different locations.

[0141] The battery pack thermal management method provided in this application can output a specific heating strategy based on the surface temperature of the battery pack 100 and the ambient temperature by collecting data from different locations of the battery pack 100. This strategy controls the heating components to be turned on or off, thereby avoiding the situation where all heating components are turned on in any environment, saving energy and improving heating efficiency.

[0142] This application embodiment also provides an electrical device, including at least one of the above-described battery packs 100. The battery packs 100 are used to provide electrical energy to the electrical device.

[0143] Electrical equipment can be vehicles, aircraft, ferries, computers, or energy storage cabinets, etc., powered by battery packs. Vehicles can be electric vehicles (EVs), pure electric vehicles (PEVs / BEVs), hybrid electric vehicles (HEVs), range-extended electric vehicles (REEVs), plug-in hybrid electric vehicles (PHEVs), or new energy vehicles.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heating module for heating a component to be heated, the component having multiple heating areas (120d), characterized in that, The heating module includes: A first heating component (130) is used to connect to the top surface (120a) or bottom surface (120b) of the component to be heated; The first heating component (130) includes a plurality of first heating parts (130a), and the plurality of first heating parts (130a) correspond one-to-one with at least a portion of the plurality of areas to be heated (120d).

2. The heating module according to claim 1, characterized in that, The plurality of first heating elements (130a) are configured such that their orthographic projections on the top surface (120a) or bottom surface (120b) of the component to be heated coincide with the plurality of areas to be heated (120d).

3. The heating module according to claim 1, characterized in that, The first heating part (130a) is H-shaped, L-shaped, C-shaped or □-shaped.

4. The heating module according to claim 1, characterized in that, It also includes a second heating assembly (140) for connection to at least one side (120c) of the component to be heated.

5. The heating module according to claim 4, characterized in that, It also includes a third heating component (150) for connecting to the bottom surface (120b) of the component to be heated, and a first heating component (130) for connecting to the top surface (120a) of the component to be heated.

6. The heating module according to claim 1, characterized in that, It also includes a third heating component (150) for connecting to the bottom surface (120b) of the component to be heated, and a first heating component (130) for connecting to the top surface (120a) of the component to be heated.

7. The heating module according to claim 5, characterized in that, The third heating assembly (150) includes at least two third heating parts (150a), which are arranged opposite each other and positioned at both ends of the bottom surface (120b) of the component to be heated.

8. The heating module according to claim 7, characterized in that, It also includes a controller (170), and the first heating component (130), the second heating component (140) and the third heating component (150) are all electrically connected to the controller (170); The controller (170) is used to acquire first data of the top surface (120a) of the component to be heated, second data of the side surface (120c) of the component to be heated, and third data of the bottom surface (120b) of the component to be heated; the controller (170) is used to control the opening or closing of the first heating component (130), the opening or closing of the second heating component (140), and the opening or closing of the third heating component (150) according to the first data, the second data, and the third data, respectively.

9. The heating module according to claim 5, characterized in that, The first heating assembly (130) includes a first heating core (131) and a first insulating layer (132) connected to both sides of the first heating core (131); and / or The second heating assembly (140) includes a second heating core (141) and a second insulating layer (142) connected to both sides of the second heating core (141); and / or The third heating component (150) includes a third heating core (151) and a third insulating layer (152) connected to both sides of the third heating core (151).

10. The heating module according to claim 9, characterized in that, The strength of the second insulating layer (142) is greater than the strength of the first insulating layer (132); and / or, the strength of the third insulating layer (152) is greater than the strength of the first insulating layer (132).

11. The heating module according to claim 10, characterized in that, The second insulating layer (142) is an insulating layer formed of silicone resin or fluororubber, or the second insulating layer (142) includes a second insulating layer substrate (1421) and a second reinforcing coating (1422) coated on the second insulating layer substrate (1421), the second reinforcing coating (1422) being opposite to the second heating core (141); and / or The third insulating layer (152) is an insulating layer formed of carbon fiber, carbon crystal film or graphene, or the third insulating layer (152) includes a third insulating layer substrate (1521) and a third reinforcing coating (1522) coated on the third insulating layer substrate (1521), the third reinforcing coating (1522) being away from the third heating core (151).

12. A battery pack, characterized in that, It includes a housing, a component to be heated, and a heating module as described in any one of claims 1 to 11, wherein the heating module and the component to be heated are located in the housing (110), and the first heating assembly (130) is connected to the top surface (120a) or bottom surface (120b) of the component to be heated.

13. The battery pack according to claim 12, characterized in that, The housing (110) includes a bottom plate (111), a side plate (112), and a top plate (113); the top surface (120a) of the component to be heated faces the top plate (113), the bottom surface (120b) of the component to be heated faces the bottom plate (111), and the side surface (120c) of the component to be heated faces the side plate (112); The first heating component (130) is connected to the top surface (120a) of the component to be heated; the heating module further includes a second heating component (140) and a third heating component (150), the second heating component (140) being connected to the side surface (120c) of the component to be heated; and the third heating component (150) being connected to the bottom surface (120b) of the component to be heated.

14. The battery pack according to claim 13, characterized in that, The component to be heated is a battery assembly (120), which includes a plurality of battery cells (121) arranged along a first direction.

15. The battery pack according to claim 13, characterized in that, The first heating component (130) is attached to the top plate (113); and / or The base plate (111) has a mounting groove (1111), and the third heating component (150) is located in the mounting groove (1111).

16. The battery pack according to claim 13, characterized in that, It also includes an end plate (180), which is disposed between the second heating component (140) and the side plate (112). The second heating component (140) is attached to the end plate (180), and the side of the end plate (180) opposite to the second heating component (140) has a plurality of spaced grooves (181).

17. An electrical appliance, characterized in that, Includes at least one battery pack (100) as described in any one of claims 12 to 16.

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