Battery pack and electric device

Abstract

A battery pack and an electric device, wherein the battery pack is used for the electric device. The battery pack comprises a shell, a battery module, an integrated module, a first cooling module and a second cooling module, wherein the battery module and the integrated module are located in the shell; the first cooling module is used for cooling the battery module; and the second cooling module is used for cooling the integrated module.

Description

Battery packs and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to a Chinese patent application filed with the Patent Office of China on July 31, 2023, with application number 202322045802.1 and titled “Battery Pack and Electrical Equipment,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of battery pack cooling systems, and in particular, to a battery pack and an electrical device. Background Art

[0004] In the related art, a thermal management system is usually used for the battery modules and integrated modules in the battery pack of electrical equipment (such as automobiles), that is, a cooling device is used to cool the battery modules and integrated modules at the same time. However, the optimal heat dissipation temperature ranges of the battery modules and the integrated modules are different, which will cause performance waste of the cooling system.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a battery pack and an electrical device, which can provide a set of cooling modules for the battery module and the integrated module respectively, so as to cool the battery module and the integrated module respectively, thereby providing the optimal heat dissipation temperature range for the battery module and the integrated module respectively, reducing the performance waste of the cooling system, and at least partially solving the above-mentioned technical problems.

[0007] In order to achieve the above-mentioned objectives, the first aspect of the present disclosure provides a battery pack, which includes a shell, a battery module, an integrated module, a first cooling module and a second cooling module. The battery module and the integrated module are located in the shell, the first cooling module is used to cool the battery module, and the second cooling module is used to cool the integrated module.

[0008] Optionally, the first cooling module includes a first liquid flow path for circulation of a first cooling medium; and / or the second cooling module includes a second liquid flow path for circulation of a second cooling medium.

[0009] Optionally, the first liquid flow path includes a common inlet, a common outlet, and a plurality of branch flow paths connected between the common inlet and the common outlet, and the plurality of branch flow paths are arranged side by side on the top surface and / or bottom surface of the battery module.

[0010] Optionally, the first cooling module includes a collecting pipe, which has a distribution flow channel connected to the common inlet and a return flow channel connected to the common outlet, the distribution flow channel is connected to the inlets of at least two of the branch flow paths, and the return flow channel is connected to the outlets of at least two of the branch flow paths.

[0011] Optionally, the collecting pipe includes: a first tube body, forming the distribution flow channel and the common inlet; a second tube body, arranged side by side with the first tube body, the second tube body having a distribution section and a return section separated from each other, the distribution flow channel is connected to the inlet of the branch flow path through the distribution section; and a third tube body, arranged side by side with the second tube body, the third tube body forming the return flow channel and the common outlet, the return flow channel is connected to the outlet of the branch flow path through the return section.

[0012] Optionally, a partition is provided in the second tube body for separating the second tube body to form the distribution section and the reflux section; at least one of the partitions extends outside the second tube body for connection to the third tube body, and / or for separating the third tube body to form the reflux channel; and / or, at least one of the partitions extends outside the second tube body for connection to the first tube body, and / or for separating the first tube body to form the distribution channel.

[0013] Optionally, the first cooling module further includes an intermediate tube, wherein the intermediate tube includes a plurality of intermediate sections separated from each other.

[0014] The branch flow path includes at least one liquid inlet pipe and at least one liquid return pipe arranged side by side, the at least one liquid inlet pipe and the at least one liquid return pipe are connected through the middle section, the inlet of the liquid inlet pipe is connected to the distribution flow channel, and the outlet of the liquid return pipe is connected to the reflux flow channel.

[0015] Optionally, the first cooling module further includes a temperature averaging plate, which is located between the battery module and the plurality of branch flow paths.

[0016] Optionally, the second cooling module includes a mounting seat, the integrated module is located on the mounting seat, and the second liquid flow path is formed on the mounting seat.

[0017] Optionally, the mounting seat includes a base and a cover plate, the base is provided with a flow channel groove and a first liquid inlet and a first liquid outlet connected to the flow channel groove, the cover plate is connected to the base and covers the flow channel groove to form the second liquid flow path together with the flow channel groove.

[0018] Optionally, the base has a bottom surface, the flow channel is formed on the bottom surface, the outer surface of the cover facing away from the flow channel is flush with the bottom surface, and the side of the base facing away from the bottom surface is used to connect the circuit board of the integrated module.

[0019] Optionally, the second liquid flow path includes a first groove section extending along the width direction of the battery pack and a second groove section extending along the height direction of the battery pack.

[0020] Optionally, the first liquid flow path includes a common inlet and a common outlet, the mounting seat has a second liquid inlet and a second liquid outlet, the second liquid inlet is connected to the common inlet, and the second liquid outlet is connected to the common outlet.

[0021] Optionally, the mounting seat includes a mounting panel for connecting a connector, the first liquid inlet, the second liquid inlet, the first liquid outlet and the second liquid outlet are arranged on the mounting panel, the second liquid inlet is connected to the common inlet through a first connecting pipe, and the second liquid outlet is connected to the common outlet through a second connecting pipe, and the mounting seat has an avoidance groove for avoiding the first connecting pipe and the second connecting pipe.

[0022] According to a second aspect of the present disclosure, an electric device is provided, wherein the electric device includes a battery pack, and the battery pack may be a battery pack described in any of the above optional solutions.

[0023] Optionally, the electrical equipment is a vehicle.

[0024] Through the above technical solution, that is, the battery pack provided by the present invention, the first cooling module can cool the battery module alone, and the second cooling module can cool the integrated module alone. According to the different heat dissipation requirements of the battery module and the integrated module, different optimal heat dissipation temperature ranges can be provided for the battery module and the integrated module respectively, which can reduce the performance waste of the cooling system.

[0025] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0027] FIG1 is a schematic structural diagram of a battery pack provided in an exemplary embodiment of the present disclosure.

[0028] FIG2 is a schematic structural diagram of a first cooling module and a second cooling module provided in an exemplary embodiment of the present disclosure.

[0029] FIG3 is a partial enlarged view of position E in FIG2 .

[0030] FIG. 4 is a schematic diagram illustrating a specific flow direction of the cooling medium in the first cooling module in an exemplary embodiment of the present disclosure.

[0031] FIG5 is a partial enlarged view of position C in FIG4 .

[0032] FIG6 is a partial enlarged view of position D in FIG4 .

[0033] FIG. 7 is a schematic diagram showing a disassembled header structure in a first cooling module provided in an exemplary embodiment of the present disclosure.

[0034] FIG8 is a partial enlarged view of position A in FIG7 .

[0035] FIG9 is a partial enlarged view of position B in FIG7 .

[0036] FIG. 10 is a schematic diagram of a second cooling module in an exemplary embodiment of the present disclosure.

[0037] FIG11 is a schematic structural diagram of an electric device provided in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0039] In the present disclosure, unless otherwise specified, directional words such as "inside" and "outside" refer to the inside and outside relative to the outline of the component or structure itself, and "first" and "second" are used to distinguish one element from another and do not have sequentiality or importance. In addition, the same figure marks in different reference drawings represent the same elements.

[0040] In a first aspect of the present disclosure, a battery pack 100 is provided. Referring to Figures 1 to 10, the battery pack 100 includes a shell 3, a battery module 4, an integrated module 5, a first cooling module 1 and a second cooling module 2. The battery module 4 and the integrated module 5 are located in the shell 3. The first cooling module 1 is used to cool the battery module 4; the second cooling module 2 is used to cool the integrated module 5.

[0041] In this way, the first cooling module 1 can cool the battery module 4 alone, and the second cooling module 2 can cool the integrated module 5 alone. According to the different heat dissipation requirements of the battery module 4 and the integrated module 5, different optimal heat dissipation temperature ranges can be provided for the battery module 4 and the integrated module 5 respectively, which can reduce the performance waste of the cooling system.

[0042] The first cooling module 1 and the second cooling module 2 can be constructed in any suitable manner according to actual application requirements. For example, as shown in FIG2 , the first cooling module 1 can include a first liquid flow path 10 for circulating a first cooling medium, so as to cool the battery module 4 through the first liquid flow path 10 . The first cooling medium can be a coolant, such as cooling water. Alternatively, in other embodiments, the first cooling module 1 can also include, for example, a semiconductor refrigeration sheet or a heat pipe, so as to cool the battery module 4 through the semiconductor refrigeration sheet or the heat pipe, but the present disclosure is not limited thereto.

[0043] As shown in FIG10 , the second cooling module 2 may include a second liquid flow path 20 for flowing a second cooling medium, so as to cool the integrated module 5 via the second liquid flow path 20 . The second cooling medium may be a coolant, such as cooling water. Alternatively, in other embodiments, the second cooling module 2 may include, for example, a semiconductor refrigeration sheet or a heat pipe, so as to cool the integrated module 5 via the semiconductor refrigeration sheet or the heat pipe, but the present disclosure is not limited thereto.

[0044] In addition, related technologies usually use a cooling flow path to cool the battery module and the integrated module. At the end of the cooling flow path, the coolant absorbs heat, causing the temperature to rise, thereby deteriorating the cooling effect and causing uneven cooling effects in various areas such as the battery module.

[0045] Therefore, in some embodiments, with reference to Figures 4 to 9, the first liquid flow path 10 includes a common inlet 101, a common outlet 102, and a plurality of branch flow paths 110 connected between the common inlet 101 and the common outlet 102, and the plurality of branch flow paths 110 are arranged side by side on the top surface and / or bottom surface of the battery module 4. In this way, when the coolant enters the first liquid flow path 10, it can enter the plurality of branch flow paths 110 at the same time through the common inlet 101 to cool down the plurality of different regional positions of the battery module 4 at the same time. In addition, the design of the plurality of branch flow paths 110, compared with the method of using one cooling flow path in the related art, also shortens the flow path of the coolant, and improves the cooling effect of the coolant flowing in the plurality of branch flow paths 110 on the battery module 4.

[0046] In some embodiments, as shown in Figures 4 to 9, the first cooling module 1 includes a manifold 120, which includes a distribution channel 103 connected to a common inlet 101 and a return channel 104 connected to a common outlet 102. The distribution channel 103 is connected to the inlets of at least two branch channels 110, and the return channel 104 is connected to the outlets of at least two branch channels 110. In this way, the coolant can first enter the distribution channel 103 through the common inlet 101, and then flow to the multiple branch channels 110 to cool the battery module 4. The coolant after cooling the battery module 4 can flow back to the return channel 104 through the multiple branch channels 110 and be discharged from the common outlet 102. Through the above-mentioned coolant circulation method, the battery module 4 can be better cooled.

[0047] In some embodiments, referring to Figures 4 to 9, the distribution channel 103 can be connected to the inlets of four branch flow paths 110, respectively, and the return flow channel 104 can be connected to the outlets of the four branch flow paths 110, respectively. In this way, four branch flow paths arranged side by side can be formed, and the coolant can flow through them at the same time, which can improve the cooling effect of the first cooling module 1 on the battery module 4. Alternatively, the number of branch flow paths 110 can be increased or decreased according to actual needs, and the present disclosure does not limit this.

[0048] In addition, multiple distribution channels 103 and return channels 104 can also be set, so that the coolant from the common inlet 101 flows to multiple branch channels 110 through multiple distribution channels 103, and flows back from multiple return channels 104 to the common outlet 102, which can also have the effect of cooling the battery module 4. This disclosure does not limit this.

[0049] In some embodiments, referring to Figures 4 to 9, the collecting pipe 120 includes a first tube body 121, a second tube body 122 and a third tube body 123, the first tube body 121 forms a distribution flow channel 103 and a common inlet 101; the second tube body 122 is arranged side by side with the first tube body 121, and the second tube body 122 has a distribution section 1221 and a return section 1222 that are separated from each other, and the distribution flow channel 103 is connected to the inlet of the branch flow path 110 through the distribution section 1221; the third tube body 123 is arranged side by side with the second tube body 122, and the third tube body 123 forms a return flow channel 104 and a common outlet 102, and the return flow channel 104 is connected to the outlet of the branch flow path 110 through the return section 1222. In this way, after the cooling liquid enters the first tube body 121 forming the distribution flow channel 103 through the common inlet 101, since the first tube body 121 is provided with a first through hole 1211 on the side wall, the second tube body 122 is also provided with a second through hole (not shown in the figure) corresponding to the position of the first through hole 1211 on the first tube body 121 at the position where the second tube body 122 is attached to the first tube body 121. The cooling liquid can pass through the first through hole 1211 and the second through hole, and flow through the first tube body 121 to the second tube body 122. The cooling liquid entering the second tube body 122 will enter the corresponding distribution section 1221, and flow to the inlet of one or more branch flow paths 110 through the distribution section 1221, and enter the branch flow path 110 to control the electric current. The battery module 4 is cooled, and the coolant after cooling the battery module 4 will return to the reflux section 1222. Since the distribution section 1221 and the reflux section 1222 are separated from each other, the coolant heated by cooling the battery module 4 will not return to the branch flow path 110. Since the side wall of the second tube body 122 is provided with a third through hole 1224 connected to the reflux section 1222, the position where the third tube body 123 and the second tube body 122 are attached also has a fourth through hole (not shown in the figure) corresponding to the position of the third through hole 1224. The coolant can pass through the third through hole 1224 and the fourth through hole, and flow through the second tube body 122 to the third tube body 123, and then be discharged from the common outlet 102 on the third tube body 123. Through this arrangement of the liquid flow channel, the cooling effect of the battery module 4 is improved, and the space utilization rate of the internal structure of the manifold 120 itself can also be improved.

[0050] Among them, the first tube body 121, the second tube body 122 and the third tube body 123 can be processed in advance on the porous structures of their respective surfaces, and then the first tube body 121, the second tube body 122 and the third tube body 123 are welded and combined to form the collecting tube 120. In this way, the space utilization rate of the collecting tube 120 can be improved, and its processing method can also be made simpler and more convenient.

[0051] In addition, in the present disclosure, the number of distribution sections 1221 and reflux sections 1222 can be arbitrary. At the same time, the number of branch flow paths 110 connected to the distribution section 1221 and the number of branch flow paths 110 connected to the reflux section 1222 can be arbitrarily appropriate. For example, a single distribution section 1221 can be set on the second tube body 122, and the single distribution section 1221 can be connected to the inlet of at least two branch flow paths 110; or, two or more distribution sections 1221 can be set, and each distribution section 1221 can be connected to the inlet of at least one branch flow path 110; similarly, a single reflux section 1222 can be set on the second tube body 122, and the single reflux section 1222 can be connected to the outlet of at least two branch flow paths 110; or, two or more reflux sections 1222 can be set, and each reflux section 1222 can be connected to the outlet of at least one branch flow path 110.

[0052] In some embodiments, as shown in Figures 4 to 9, a partition 1223 is provided in the second tube body 122 to separate the second tube body 122 to form a distribution section 1221 and a return section 1222. In this way, the partition 1223 can separate the distribution section 1221 and the return section 1222, so that the cooling liquid entering the inlet of the branch flow path 110 through the distribution section 1221 and the cooling liquid entering the return section 1222 through the outlet of the branch flow path 110 will be separated by the partition 1223.

[0053] Furthermore, at least one of the plurality of partitions 1223 may extend beyond the second tube 122 to connect to the third tube 123 and / or to separate the third tube 123 to form the return flow channel 104. In this manner, the second tube 122 and the third tube 123 can be connected via the partition 1223, and the space within the third tube 123 can also be separated to form the return flow channel 104. This facilitates processing and manufacturing, reducing production costs.

[0054] Similarly, at least one of the multiple partitions 1223 can extend outside the second tube body 122 to be connected to the first tube body 121 and / or to separate the first tube body 121 to form the distribution channel 103. In this way, the first tube body 121 and the second tube body 122 can be connected via the partition 1223, and the partition 1223 can also be used to separate the space within the first tube body 121 to form the distribution channel 103, thereby facilitating processing and reducing manufacturing costs.

[0055] In some embodiments, the partition 1223 can be inserted into the slot 150 on the first tube body 121 and / or the second tube body 122 and / or the third tube body 123, so that the first tube body 121 can be connected to the second tube body 122, or the second tube body 122 can be connected to the third tube body 123. For example, in order to facilitate the assembly of the collecting tube 120, the first tube body 121, the second tube body 122 and the third tube body 123 can be arranged side by side first, and the partition 1223 can be inserted into multiple slots 150 one by one. After the first tube body 121, the second tube body 122 and the third tube body 123 are installed, the contact parts of the first tube body 121 and the second tube body 122 are welded, and the contact parts of the second tube body 122 and the third tube body 123 are welded to complete the overall assembly process of the collecting tube 120.

[0056] It should be noted that when the partition 1223 is required to connect two adjacent tubes without separating the space inside the tube, holes can be set on some of the partitions 1223 as shown in Figure 9 to facilitate the circulation of coolant.

[0057] In some embodiments, as shown in FIG2 , the first cooling module 1 further includes an intermediate pipe 130, which includes a plurality of mutually isolated intermediate sections 131. The branch flow path 110 includes at least one liquid inlet pipe 111 and at least one liquid return pipe 112 arranged side by side. The at least one liquid inlet pipe 111 and the at least one liquid return pipe 112 are connected through the intermediate section 131. The inlet of the liquid inlet pipe 111 is connected to the distribution channel 103, and the outlet of the liquid return pipe 112 is connected to the return channel 104. With this arrangement, when the coolant enters the at least one liquid inlet pipe 111 of the branch flow path 110 through the distribution channel 103, it will flow along the extension direction of the liquid inlet pipe 111 in a direction away from the distribution channel 103. When it flows to the position farthest from the distribution channel 103, the coolant can flow into the intermediate pipe 130 and then return to the return channel 104 through the at least one connected return pipe 112, completing a circulation flow. The number of liquid inlet pipes 111 and liquid return pipes 112 in each branch flow path 110 can be designed according to actual application requirements. For example, Figures 2 and 4 show an embodiment in which each branch flow path 110 includes a liquid inlet pipe 111 and a liquid return pipe 112 arranged side by side. In addition, the liquid inlet pipe 111 and the liquid return pipe 112 can be processed into any suitable shape according to actual conditions. For example, in order to save space inside the battery pack 100, the liquid inlet pipe 111 and the liquid return pipe 112 can be flat tubes, and the ends of the liquid inlet pipe 111 and the liquid return pipe 112 can be bent and connected to the distribution channel 103 and the return channel 104 on the second tube body 122. In this way, the utilization rate of the internal space of the battery pack 100 can be improved.

[0058] In some embodiments, as shown in FIG2 , the first cooling module further includes a temperature equalizing plate 140, which is located between the battery module 4 and the plurality of branch flow paths 110. In this way, the temperature equalizing plate 140 can evenly distribute the temperature of the coolant entering the branch flow path 110 through the manifold 120 to various positions of the battery module 4, so as to ensure that the temperature of each position of the battery module 4 is consistent, and to improve the cooling effect on the battery module 4. Among them, the plurality of branch flow paths 110 can be directly attached to the temperature equalizing plate 140, or can be indirectly thermally connected to the temperature equalizing plate 140 through a thermally conductive material such as thermally conductive glue. Similarly, the temperature equalizing plate 140 can be directly attached to the battery module 4, or it can be arranged at intervals from the battery module 4, or it can be thermally connected to the battery module 4 through a thermally conductive material such as thermally conductive glue.

[0059] In some embodiments, as shown in Figures 1, 2, and 10, the second cooling module 2 includes a mounting base 210, the integrated module 5 is positioned on the mounting base 210, and the second liquid flow path 20 is formed on the mounting base 210. In this way, the mounting base 210 for mounting the integrated module 5 can be used to form the second liquid flow path 20, thereby reducing the space occupied by the second liquid flow path 20 within the battery pack 100. The second liquid flow path 20 formed on the mounting base 210 can also cool the integrated module 5 separately, thereby reducing performance waste of the cooling system and improving the cooling effect of the battery pack 100 on the integrated module 5.

[0060] In some embodiments, as shown in FIG10 , the mounting base 210 includes a base 211 and a cover 212. The base 211 is provided with a flow channel 213 and a first liquid inlet 214 and a first liquid outlet 215 communicating with the flow channel 213. The cover 212 is connected to the base 211 and covers the flow channel 213, thereby forming a second liquid flow path 20 together with the flow channel 213. In this way, coolant can enter the flow channel 213 from the first liquid inlet 214 and cool the integrated module 5 on the mounting base 210. The coolant after cooling the integrated module 5 can be discharged from the first liquid outlet 215. After the flow channel 213 is machined on the base 211, the cover 212 can cover the flow channel 213. In this way, the coolant flowing in the second liquid flow path 20 will not leak outward, thereby improving the safety of cooling the integrated module 5.

[0061] In some embodiments, as shown in Figures 1, 2, and 10, the base 211 has a bottom surface 2112, a flow channel 213 is formed on the bottom surface 2112, and the outer surface of the cover 212 facing away from the flow channel 213 is flush with the bottom surface 2112. The side of the base 211 facing away from the bottom surface 2112 is used to connect to the circuit board 501 of the integrated module 5. In this way, the outer surface of the cover 212 is flush with the bottom surface 2112, which ensures the flatness of the base 211. The coolant flowing in the flow channel 213 can also cool the circuit board 501 of the integrated module 5, thereby improving the cooling effect of the second cooling module 2 on the integrated module 5.

[0062] In addition, in order to improve the cooling effect of high-heat-generating components inside the integrated module 5, such as magnetic components or power modules, the depth of the flow channel groove 213 in the direction toward the bottom surface 2112 along the side of the base 211 away from the bottom surface 2112 can be adaptively adjusted according to the position where the magnetic components or power modules are installed on the integrated module 5, and then the flow channel groove 213 can be designed in the form of a three-dimensional water channel to better cool down high-heat-generating components such as magnetic components or power modules.

[0063] For example, referring to Figures 1, 2, and 10, the second liquid flow path 20 includes a first groove section 201 extending along the width direction of the battery pack 100 and a second groove section 202 extending along the height direction of the battery pack 100. In this way, the first groove section 201 can cool down components connected to the top surface or side wall surface of the base 211, and the second groove section 202 can cool down components connected to the side wall surface of the base 211 and having a certain height. For example, the second groove section 202 can be attached to the side wall of the component, thereby circulating coolant to cool the component, thereby achieving a better cooling effect on the components on the base 211.

[0064] In addition, the extension direction of the first slot section 201 and the extension depth of the second slot section 202 can also be selected according to any suitable layout based on the arrangement of the components on the base 211. For example, referring to Figure 3, the first slot section 201 can be arranged in a curved shape on the base 211, and multiple branch flow paths can be provided to cool multiple components on the base 211 at the same time.

[0065] In some embodiments, as shown in Figures 1, 2, and 10, the first liquid flow path 10 includes a common inlet 101 and a common outlet 102, and the mounting base 210 has a second liquid inlet 216 and a second liquid outlet 217. The second liquid inlet 216 is connected to the common inlet 101, and the second liquid outlet 217 is connected to the common outlet 102. In this way, the utilization rate of the battery pack 100 can be improved, and the space occupied by the first cooling module 1 and the second cooling module 2 within the battery pack 100 can be reduced. The coolant can flow directly to the common inlet 101 through the second liquid inlet 216, or directly to the common outlet 102 through the second liquid outlet 217.

[0066] In some embodiments, referring to Figures 1, 2 and 10, the mounting seat 210 includes a mounting panel 218 for connecting a connector, a first liquid inlet 214, a second liquid inlet 216, a first liquid outlet 215 and a second liquid outlet 217 are arranged on the mounting panel 218, the second liquid inlet 216 is connected to the common inlet 101 through a first connecting tube 220, and the second liquid outlet 217 is connected to the common outlet 102 through a second connecting tube 230, and the mounting seat 210 has an avoidance groove 219 for avoiding the first connecting tube 220 and the second connecting tube 230. In this way, the mounting panel 218 can be used to connect plugs (connectors) of other components or external devices within the battery pack 100, thereby ensuring that the battery pack 100 can provide power or signal connections to other components or external devices. The multiple liquid inlets and outlets provided on the mounting panel 218 can also reduce the space occupied by the second cooling module 2 within the battery pack 100. As shown in Figures 2 and 3, the avoidance groove 219 provides avoidance space for the first connecting pipe 220 and the second connecting pipe 230, thereby improving the utilization of the internal space of the battery pack 100. The coolant can enter the common inlet 101 after passing through the second liquid inlet 216 and the first connecting pipe 220 in sequence, and then pass through the common outlet 102 and the second connecting pipe 230 in sequence before being discharged from the second liquid outlet 217.

[0067] As shown in FIG11 , a second aspect of the present disclosure provides an electric device 1000 , which includes a battery pack 100 , and the battery pack 100 has all the beneficial effects of the above-mentioned embodiments.

[0068] In some embodiments, the electric device 1000 may be a vehicle, a mobile phone, a portable device, a laptop computer, an electric toy, an electric tool, etc. The vehicle may be a fuel vehicle or a new energy vehicle; the electric toy may be a fixed or mobile electric toy, such as a game console or an electric car toy; and the electric tool may be an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an impact drill, etc. As long as the battery pack 100 can be applied to the corresponding electric device 1000, the present disclosure does not impose any particular limitations on the specific embodiments of the electric device 1000.

[0069] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0070] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0071] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery pack (100), characterized in that: include: Housing (3); A battery module (4) is located inside the housing (3); An integrated module (5) is located inside the housing (3); A first cooling module (1) for cooling the battery module (4); and The second cooling module (2) is used to cool the integrated module (5).

2. The battery pack according to claim 1, characterized in that: The first cooling module (1) comprises a first liquid flow path (10) for a first cooling medium to flow through; and / or the second cooling module (2) comprises a second liquid flow path (20) for a second cooling medium to flow through.

3. The battery pack according to claim 2, characterized in that: The first liquid flow path (10) comprises a common inlet (101), a common outlet (102), and a plurality of branch flow paths (110) connected between the common inlet (101) and the common outlet (102), wherein the plurality of branch flow paths (110) are arranged side by side on the top surface and / or the bottom surface of the battery module (4).

4. The battery pack according to claim 3, characterized in that: The first cooling module (1) comprises a collecting pipe (120), wherein the collecting pipe (120) has a distribution channel (103) connected to the common inlet (101) and a return channel (104) connected to the common outlet (102), wherein the distribution channel (103) is connected to the inlets of at least two of the branch flow paths (110), and the return channel (104) is connected to the outlets of at least two of the branch flow paths (110).

5. The battery pack according to claim 4, characterized in that: The header (120) comprises: A first tube body (121), forming the distribution flow channel (103) and the common inlet (101); a second tube body (122) arranged side by side with the first tube body (121), the second tube body (122) comprising a distribution section (1221) and a return section (1222) which are separated from each other, the distribution flow channel (103) being connected to the inlet of the branch flow path (110) through the distribution section (1221); and The third tube body (123) is arranged side by side with the second tube body (122), and the third tube body (123) forms the return flow channel (104) and the common outlet (102), and the return flow channel (104) is connected to the outlet of the branch flow path (110) through the return section (1222).

6. The battery pack according to claim 5, characterized in that: A partition plate (1223) is provided in the second tube body (122) for dividing the second tube body (122) to form the distribution section (1221) and the return section (1222); At least one of the partitions (1223) extends outside the second tube (122) to be connected to the third tube (123), and / or to separate the third tube (123) to form the return flow channel (104); and / or, At least one of the partitions (1223) extends outside the second tube body (122) so as to be connected to the first tube body (121), and / or to separate the first tube body (121) to form the distribution channel (103).

7. The battery pack according to any one of claims 4 to 6, characterized in that: The first cooling module (1) further comprises an intermediate tube (130), wherein the intermediate tube (130) comprises a plurality of intermediate sections (131) separated from each other. The branch flow path (110) comprises at least one liquid inlet pipe (111) and at least one liquid return pipe (112) arranged side by side, the at least one liquid inlet pipe (111) and the at least one liquid return pipe (112) being connected via the middle section (131), the inlet of the liquid inlet pipe (111) being connected to the distribution flow channel (103), and the outlet of the liquid return pipe (112) being connected to the reflux flow channel (104).

8. The battery pack according to any one of claims 3 to 7, characterized in that: The first cooling module (1) further comprises a temperature averaging plate (140), wherein the temperature averaging plate (140) is located between the battery module (4) and the plurality of branch flow paths (110).

9. The battery pack according to any one of claims 2 to 8, characterized in that: The second cooling module (2) comprises a mounting seat (210), the integrated module (5) is located on the mounting seat (210), and the second liquid flow path (20) is formed on the mounting seat (210).

10. The battery pack according to claim 9, characterized in that: The mounting seat (210) comprises a base (211) and a cover plate (212); the base (211) is provided with a flow channel (213) and a first liquid inlet (214) and a first liquid outlet (215) connected to the flow channel (213); the cover plate (212) is connected to the base (211) and covers the flow channel (213), so as to form the second liquid flow path (20) together with the flow channel (213).

11. The battery pack according to claim 10, characterized in that: The base (211) has a bottom surface (2112), the flow channel (213) is formed on the bottom surface (2112), the outer surface of the cover plate (212) facing away from the flow channel (213) is flush with the bottom surface (2112), and the side of the base (211) facing away from the bottom surface (2112) is used for connecting the circuit board (501) of the integrated module (5).

12. The battery pack according to any one of claims 9 to 11, characterized in that: The second liquid flow path (20) comprises a first groove section (201) extending along the width direction of the battery pack (100) and a second groove section (202) extending along the height direction of the battery pack (100).

13. The battery pack according to any one of claims 9 to 12, characterized in that: The first liquid flow path (10) comprises a common inlet (101) and a common outlet (102), and the mounting seat (210) has a second liquid inlet (216) and a second liquid outlet (217), wherein the second liquid inlet (216) is connected to the common inlet (101), and the second liquid outlet (217) is connected to the common outlet (102).

14. The battery pack according to claim 13, characterized in that: The mounting seat (210) comprises a mounting panel (218) for connecting a connector; a first liquid inlet (214), a second liquid inlet (216), a first liquid outlet (215) and a second liquid outlet (217) are arranged on the mounting panel (218); the second liquid inlet (216) is connected to the common inlet (101) via a first connecting pipe (220); the second liquid outlet (217) is connected to the common outlet (101) via a second connecting pipe (230); and the mounting seat (210) has an avoidance groove (219) for avoiding the first connecting pipe (220) and the second connecting pipe (230).

15. An electrical device (1000), characterized in that: It comprises a battery pack, wherein the battery pack is a battery pack (100) as described in any one of claims 1 to 14.

16. The electrical equipment according to claim 15, characterized in that: The electrical equipment (1000) is a vehicle.

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