Battery pack and electric device
By designing a containment groove in the battery pack to collect leaked heat exchange medium, the problems of short circuits and thermal runaway caused by heat exchange medium leakage are solved, thereby improving the safety and lifespan of the battery pack.
Patent Information
- Application Number
- CN202610772918.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-29
- Publication Date
- 2026-08-25
AI Technical Summary
In existing battery packs, leakage of the heat exchange medium may lead to short circuits or thermal runaway.
Design a battery pack structure in which a heat exchange plate is supported in a receiving groove that can collect leaked heat exchange medium and prevent it from directly contacting the battery cells. Through the design of the flow guide and connectors, the leaked heat exchange medium can be collected and discharged independently.
It improves the safety of battery pack use, prevents short circuits and thermal runaway, and extends service life.
Smart Images
Figure CN122638643A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Technology
[0002] In the battery pack structure, there is a cooling method in which the thermal management component is connected to the battery cell to cool the battery cell. However, in actual use, there is a risk of heat exchange medium leakage in the thermal management component. The leaked heat exchange medium may cause a short circuit in the battery pack, or even cause severe situations such as thermal runaway in the battery pack. Summary of the Invention
[0003] The main purpose of this application is to provide a battery pack and electrical device that aims to solve the technical problem that the presence of leaked heat exchange medium inside the battery pack may cause a short circuit in the battery pack.
[0004] To achieve the above objectives, in a first aspect, this application proposes a battery pack having a first direction, a second direction, and a third direction that are mutually perpendicular to each other, the battery pack comprising: A battery module, comprising multiple cell groups and multiple busbars, wherein the multiple cell groups are arranged along the third direction, each cell group comprises multiple individual cells, the multiple individual cells are arranged along the first direction, and each busbar connects two adjacent individual cells; A flow guide extends along a first direction and is attached to the manifold along a second direction, and the flow guide has a receiving groove; A heat exchange plate is disposed in the receiving groove and is thermally connected to the manifold.
[0005] In some embodiments, the battery cell includes a positive terminal and a negative terminal, the positive terminal and the negative terminal are arranged side by side along the third direction, and the busbar connects two adjacent positive terminals or connects two adjacent negative terminals; The flow guide includes a first frame and a second frame, both of which extend along the first direction and are arranged side by side along the third direction. The first frame is attached to the busbar of the positive terminal post, and the second frame is attached to the busbar of the negative terminal post.
[0006] In some embodiments, the flow guide further includes a connector, one end of which is connected to the first frame and the other end of which is connected to the second frame.
[0007] In some embodiments, the connector, the first frame, and the second frame are integrally formed.
[0008] In some embodiments, the connector has a connecting groove extending along the third direction, the connecting groove communicating with the receiving groove of the first frame and the receiving groove of the second frame.
[0009] In some embodiments, the heat exchange plate includes a first plate body, a second plate body, and a collector body. The first plate body and the second plate body are both extended along the first direction and are spaced apart along the third direction. The collector body is connected to one end of the first plate body and one end of the second plate body along the third direction. The connector is connected to one end of the first frame and one end of the second frame along the third direction. The first plate is disposed in the receiving groove of the first frame, the second plate is disposed in the receiving groove of the second frame, and the collector is disposed in the connecting groove.
[0010] In some embodiments, the first frame or the second frame includes at least two side plates and at least two guide plates. The two side plates are disposed opposite each other along the third direction, and the two guide plates are correspondingly connected to the ends of the two side plates away from the connector. The two guide plates extend from the ends of the side plates in opposite directions along the first direction.
[0011] In some embodiments, the first frame or the second frame includes a base plate and at least two side plates, the two side plates being respectively connected to opposite sides of the base plate along the third direction along the second direction, the base plate being fitted to the busbar, and the base plate and the two side plates forming the receiving groove; The base plate has a window area that connects to the receiving groove and exposes the busbar so that the busbar and the heat exchange plate are thermally connected.
[0012] In some embodiments, the base plate further includes a receiving portion and a plurality of partitions, the receiving portion surrounding the circumference of the window opening area, and the plurality of partitions being spaced apart along the first direction to divide the window opening area into a plurality of window opening spaces, each of the partitions being connected to the receiving portion; Along the second direction, the orthographic projection of the window space onto a plane perpendicular to the second direction overlaps the orthographic projection of the busbar onto a plane perpendicular to the second direction.
[0013] In some embodiments, the battery pack further includes a thermally conductive element, which is at least partially disposed within the window space, with one side of the thermally conductive element attached to the heat exchange plate and the other side of the thermally conductive element attached to the busbar.
[0014] In some embodiments, the heat-conducting component includes a first body portion and a second body portion, the second body portion being connected to the first body portion along the second direction, and the first body portion being disposed within the window space; The battery pack also includes a blocking member disposed on the side of the receiving portion away from the receiving groove, the blocking member circumferentially surrounding the second body portion.
[0015] In some embodiments, the first frame or the second frame further includes at least two folding portions, the two folding portions being correspondingly disposed on the side of the two side plates away from the bottom plate, and the two folding portions being bent along the third direction from the ends of the side plates in opposite directions to each other.
[0016] In some embodiments, along the second direction, the depth of the receiving groove is not less than the thickness of the heat exchange plate.
[0017] Secondly, this application proposes an electrical device, comprising: The battery pack as described in any of the above embodiments.
[0018] Compared with the prior art, the beneficial effects of this application are: In the technical solution of this application, the heat exchange plate is supported in the receiving tank. When the heat exchange plate is corroded and its structure is damaged, the heat exchange medium inside the heat exchange plate will flow into the receiving tank. The receiving tank can collect the leaked heat exchange medium, which can separate the leaked heat exchange medium from the battery cell and prevent the leaked heat exchange medium from flowing randomly and causing the heat exchange medium to come into direct contact with the battery cell, thereby preventing the battery cell from short-circuiting or thermal runaway and other adverse conditions.
[0019] Electrical devices using the above-mentioned battery packs have high safety and long service life. Attached Figure Description
[0020] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of a battery pack provided in an embodiment of this application; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3This is a cross-sectional view of the battery pack at the heat exchange plate according to an embodiment of this application; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the structure of a flow guide provided in one embodiment of this application; Figure 6 for Figure 5 A magnified view of a section at point C; Figure 7 This is a schematic diagram of the structure of a heat exchange plate provided in one embodiment of this application.
[0022] Explanation of icon numbers: 10. Battery pack; 100. Battery module; 110. Battery cell assembly; 120. Busbar; 111. Battery cell; 1111, Positive terminal; 1112, Negative terminal; 200. Flow deflector; 210. Receiving slot; 220. First frame; 230. Second frame; 240. Connecting component; 221. Side plate; 222. Deflector; 223. Bottom plate; 224. Folding section; 2231. Window opening area; 2232. Receiving part; 2233. Separator; 22311. Windowed space; 241. Connecting slot; 300. Heat exchange plate; 310. First plate; 320. Second plate; 330. Current collector; 400. Thermal conductive components; 410. The first body part; 420. The second body part; 500. Blocking components; X, first direction; Y, second direction; Z, Third-party orientation.
[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0024] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0025] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0026] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0027] To prevent leaked heat exchange medium from flowing to battery cell 111, causing a short circuit in battery cell 111, or even triggering thermal runaway, refer to Figures 1 to 7 One embodiment of this application provides a battery pack 10, which has a first direction X, a second direction Y and a third direction Z that are perpendicular to each other. For example, when the battery pack 10 is placed upright, the terminal post of the battery pack 10 faces upward. At this time, the first direction X can be the length direction of the battery pack 10 when it is placed upright, the second direction Y can be the height direction of the battery pack 10 when it is placed upright, and the third direction Z can be the width direction of the battery pack 10 when it is placed upright.
[0028] The battery pack 10 includes a battery module 100, a flow guide 200, and a heat exchange plate 300. The battery module 100 includes multiple cell groups 110 and multiple busbars 120. The multiple cell groups 110 are arranged along a third direction Z, and each cell group 110 includes multiple individual battery cells 111. The multiple individual battery cells 111 are arranged along a first direction X, and each busbar 120 connects two adjacent individual battery cells 111. Preferably, each individual battery cell 111 has a terminal post, and each busbar 120 connects the terminals of two adjacent individual battery cells 111. The flow guide 200 extends along the first direction X and is attached to the busbars 120 along a second direction Y. The flow guide 200 has a receiving groove 210. The heat exchange plate 300 is disposed within the receiving groove 210 and is thermally connected to the busbars 120. Exemplarily, the heat exchange plate 300 may have flow channels for conveying a heat exchange medium. When the heat exchange plate 300 is corroded and its structure is damaged, the heat exchange medium inside it can leak into the receiving tank 210, thus preventing the heat exchange medium from leaking into the battery pack 10 and directly contacting the battery cell 111, causing the battery cell 111 to short circuit.
[0029] Specifically, the flow guide 200 is attached to the busbar 120, and the heat exchange plate 300 is disposed in the receiving groove 210 of the flow guide 200, that is, the heat exchange plate 300 indirectly contacts the busbar 120 through the flow guide 200. Heat exchange can occur between the heat exchange plate 300 and the busbar 120. For example, when the operating environment of the battery pack 10 is hot, the heat exchange plate 300 can be filled with a cooling medium, which can cool the busbar 120 and prevent the battery cell 111 from overheating, thus preventing the battery pack 10 from experiencing thermal runaway. When the operating environment of the battery pack 10 is cold, the heat exchange plate 300 can be filled with a heating medium, which can heat the busbar 120 and prevent the battery cell 111 from overheating, thus preventing the battery pack 10 from malfunctioning.
[0030] The heat exchange plate 300 is received in the receiving tank 210. When the heat exchange plate 300 is corroded and its structure is damaged, the heat exchange medium in the heat exchange plate 300 will flow into the receiving tank 210. The receiving tank 210 can collect the leaked heat exchange medium, which can separate the leaked heat exchange medium from the battery cell 111, prevent the leaked heat exchange medium from flowing randomly and causing the heat exchange medium to come into direct contact with the battery cell 111, and thus prevent the battery cell 111 from short-circuiting or thermal runaway and other adverse conditions.
[0031] Reference Figure 1 , Figure 2 and Figure 5In some embodiments, the battery cell 111 includes a positive terminal 1111 and a negative terminal 1112, which are arranged side-by-side along a third direction Z. The busbar 120 connects two adjacent positive terminals 1111 or two adjacent negative terminals 1112. The current guide 200 includes a first frame 220 and a second frame 230, both of which extend along a first direction X. The first frame 220 and the second frame 230 are arranged side-by-side along a third direction Z. The first frame 220 is attached to the busbar 120 of the positive terminal 1111, and the second frame 230 is attached to the busbar 120 of the negative terminal 1112.
[0032] Specifically, corresponding to the busbar 120 of the positive electrode post 1111, there is a first frame 220 to support the heat exchange plate 300; corresponding to the busbar 120 of the negative electrode post 1112, there is a second frame 230 to support the heat exchange plate 300. With this structure, on the one hand, when the heat exchange medium leaks from the heat exchange plate 300 in the first frame 220, the leaked heat exchange medium flows into the receiving groove 210 of the first frame 220; on the other hand, when the heat exchange plate 300 in the second frame 230 leaks... When a heat exchange medium leaks, the leaked heat exchange medium flows into the receiving groove 210 of the second frame 230, allowing the first frame 220 and the second frame 230 to collect and discharge the leaked heat exchange medium relatively independently, preventing the leaked heat exchange medium from flowing to the battery cell 111 and improving the safety of the battery pack 10. On the other hand, it can reduce the overall weight of the flow guide 200 (relative to the flow guide 200 being a single frame), improving the installation flexibility of the battery pack 10.
[0033] Reference Figure 5 In some embodiments, the flow guide 200 further includes a connector 240, one end of which is connected to the first frame 220 and the other end of which is connected to the second frame 230.
[0034] Specifically, the first frame 220 and the second frame 230 are connected into a whole by the connector 240. On the one hand, this facilitates the production, transportation and installation of the flow guide 200; on the other hand, it can improve the structural strength of the flow guide 200, prevent the flow guide 200 from easily deforming, and ensure the flow guide 200's collection effect on leaked heat exchange medium.
[0035] In some embodiments, the connector 240, the first frame 220, and the second frame 230 are integrally formed.
[0036] Specifically, the one-piece molding process can improve the connection stability and reliability between the connector 240, the first frame 220 and the second frame 230, and enhance the structural strength of the flow guide 200. On the other hand, it can simplify the manufacturing process of the flow guide 200 and improve the manufacturing efficiency of the flow guide 200.
[0037] In some embodiments, the connector 240, the first frame 220, and the second frame 230 may be welded together.
[0038] Reference Figure 5 In some embodiments, the connector 240 has a connecting groove 241 extending in a third direction Z, the connecting groove 241 communicating with the receiving groove 210 of the first frame 220 and the receiving groove 210 of the second frame 230.
[0039] Specifically, the connecting groove 241 can connect the receiving groove 210 of the first frame 220 and the receiving groove 210 of the second frame 230. For example, when the heat exchange medium in the receiving groove 210 of the first frame 220 is too much, the heat exchange medium in the receiving groove 210 of the first frame 220 can flow to the receiving groove 210 of the second frame 230 through the connecting groove 241, preventing the risk of the heat exchange medium in the receiving groove 210 of the first frame 220 overflowing, and avoiding direct contact between the heat exchange medium and the battery cell 111, which would cause a short circuit in the battery pack 10.
[0040] Similarly, when the heat exchange medium in the receiving tank 210 of the second frame 230 is too much, the heat exchange medium in the receiving tank 210 of the second frame 230 can flow to the receiving tank 210 of the first frame 220 through the connecting tank 241, so as to maintain the flow balance of the heat exchange medium in the receiving tank 210 of the first frame 220 and the receiving tank 210 of the second frame 230 and avoid the risk of overflow.
[0041] Reference Figure 1 and Figure 7In some embodiments, the heat exchange plate 300 includes a first plate body 310, a second plate body 320, and a collector 330. Both the first plate body 310 and the second plate body 320 extend along a first direction X, and are spaced apart along a third direction Z. The collector 330 is connected along the third direction Z to one end of the first plate body 310 and one end of the second plate body 320. The collector 330 is internally connected to the first plate body 310 and the second plate body 320. For example, the input and output ends of the heat exchange medium can both be located in the collector 330. The heat exchange medium can be supplied to the collector 330 through the input end, and can flow from the collector 330 to the first plate body 310 and the second plate body 320. It is understood that the heat exchange medium in the first plate body 310 and the second plate body 320 can both flow back to the collector 330 and be discharged from the collector 330 through the output end.
[0042] Reference Figure 1 , Figure 5 and Figure 7 The connector 240 is connected along the third direction Z to one end of the first frame 220 and one end of the second frame 230. The first plate 310 is disposed in the receiving groove 210 of the first frame 220, the second plate 320 is disposed in the receiving groove 210 of the second frame 230, and the collector 330 is disposed in the connecting groove 241.
[0043] Specifically, the first plate 310 and the second plate 320 are internally connected, so that while the first plate 310 exchanges heat with the busbar 120 of the positive electrode post 1111, the second plate 320 can exchange heat with the busbar 120 of the negative electrode post 1112, thereby reducing the temperature difference between the busbar 120 of the positive electrode post 1111 and the busbar 120 of the negative electrode post 1112 and improving the temperature uniformity of the battery cell 111.
[0044] Reference Figure 5 and Figure 6 In some embodiments, the first frame 220 or the second frame 230 includes at least two side plates 221 and at least two guide plates 222. The two side plates 221 are arranged opposite each other along a third direction Z. The two guide plates 222 are correspondingly connected to the ends of the two side plates 221 away from the connector 240, and the two guide plates 222 extend from the ends of the side plates 221 along a first direction X in opposite directions.
[0045] Specifically, the first frame 220 and the second frame 230 form drainage ports at the guide plates 222. Through the drainage ports, the heat exchange medium in the receiving slots 210 of the first frame 220 and the receiving slots 210 of the second frame 230 can be discharged, avoiding the accumulation of heat exchange medium in the receiving slots 210 of the first frame 220 and the receiving slots 210 of the second frame 230, and reducing the risk of direct contact between the heat exchange medium and the battery cells 111. Based on the structural features of the two guide plates 222, a funnel-shaped drainage port can be formed between the two guide plates 222, which is conducive to the smooth discharge of the heat exchange medium in the receiving slots 210 of the first frame 220 and the receiving slots 210 of the second frame 230, and prevents the heat exchange medium from clogging the drainage ports.
[0046] Reference Figure 5 and Figure 6 In some embodiments, the first frame 220 or the second frame 230 includes a base plate 223 and at least two side plates 221. The two side plates 221 are respectively connected to opposite sides of the base plate 223 along a second direction Y along a third direction Z. The base plate 223 is attached to the busbar 120, and the base plate 223 and the two side plates 221 form a receiving groove 210. The base plate 223 has a window area 2231 that communicates with the receiving groove 210 and exposes the busbar 120 so that the busbar 120 and the heat exchange plate 300 are thermally connected.
[0047] Specifically, the heat exchange plate 300 can fill the window area 2231, allowing direct contact between the heat exchange plate 300 and the manifold 120, without the need for structures such as the base plate 223 sandwiched between the heat exchange plate 300 and the manifold 120 support. This direct contact between the heat exchange plate 300 and the manifold 120 improves the heat exchange efficiency between the heat exchange plate 300 and the manifold 120, prevents heat loss from the heat exchange plate 300 caused by other sandwiched structures such as the base plate 223, and ensures that the heat exchange plate 300 can achieve maximum heat exchange with the manifold 120.
[0048] Reference Figure 5 In some embodiments, the base plate 223 further includes a receiving portion 2232 and a plurality of partitions 2233. The receiving portion 2232 surrounds the circumference of the window area 2231, and the plurality of partitions 2233 are spaced apart along a first direction X to divide the window area 2231 into a plurality of window spaces 22311. Each partition 2233 is connected to the receiving portion 2232. Exemplarily, the partitions 2233 and the receiving portion 2232 can be integrally formed, or the partitions 2233 can be welded to the receiving portion 2232. Along the second direction Y, the orthographic projection of the window space 22311 onto a plane perpendicular to the second direction Y covers the orthographic projection of the busbar 120 onto a plane perpendicular to the second direction Y.
[0049] Specifically, a window space 22311 is provided at the position corresponding to the busbar 120, so that the window space 22311 can expose the busbar 120 and ensure that the heat exchange plate 300 can directly contact the busbar 120 through the window space 22311; at other positions corresponding to the battery cell 111, a receiving part 2232 and a separator 2233 are provided. On the one hand, this helps to increase the structural strength of the guide frame 200 and improve the bending resistance of the guide frame 200. On the other hand, it helps to improve the support stability of the guide frame 200 on the heat exchange plate 300, prevent the heat exchange plate 300 from shifting, and improve the heat exchange effect of the heat exchange plate 300 on the busbar 120.
[0050] In some embodiments, a flow channel (not shown) is provided on the side of the separator 2233 away from the busbar 120, and the flow channel extends in the third direction Z.
[0051] Specifically, the base plate 223 includes multiple receiving parts 2232, and the separator 2233 can connect two opposite receiving parts 2232. When the heat exchange plate 300 leaks heat exchange medium at one of the receiving parts 2232, the leaked heat exchange medium can flow along the flow channel to the other receiving part 2232, ensuring that the heat exchange medium can be dispersed, avoiding the accumulation of heat exchange medium, and achieving uniform discharge of heat exchange medium.
[0052] Reference Figure 3 and Figure 4 In some embodiments, the battery pack 10 further includes a thermally conductive element 400. Exemplarily, the thermally conductive element 400 may be a thermally conductive adhesive layer or a thermally conductive foam, etc. The thermally conductive element 400 is at least partially disposed within the window space 22311, with one side of the thermally conductive element 400 attached to the heat exchange plate 300 and the other side of the thermally conductive element 400 attached to the busbar 120.
[0053] Specifically, the heat-conducting component 400 can isolate the heat exchange plate 300 and the busbar 120, preventing the heat exchange medium leaking from the heat exchange plate 300 from flowing directly to the busbar 120, which helps ensure the safety of the battery cell 111. Moreover, the heat-conducting component 400 can fill the gap between the heat exchange plate 300 and the busbar 120, improving the heat exchange uniformity between the heat exchange plate 300 and the busbar 120, and enhancing the heat exchange efficiency between the heat exchange plate 300 and the busbar 120.
[0054] Reference Figure 3 and Figure 4 In some embodiments, the heat-conducting component 400 includes a first body portion 410 and a second body portion 420. The second body portion 420 is connected to the first body portion 410 along a second direction Y. The first body portion 410 is disposed within the window space 22311, and the second body portion 420 protrudes from the window space 22311.
[0055] The battery pack 10 also includes a blocking member 500. For example, the blocking member 500 may be a limiting adhesive strip. The blocking member 500 is disposed on the side of the receiving portion 2232 away from the receiving groove 210. The blocking member 500 surrounds the second body portion 420 in the circumferential direction.
[0056] Specifically, the blocking element 500 can limit the filling space of the heat-conducting element 400, ensuring that the heat-conducting element 400 does not overflow into other unnecessary areas, thereby improving the structural safety and stability within the battery pack 10. Furthermore, by setting the blocking element 500, the thickness of the heat-conducting element 400 can be increased. On the one hand, this improves the heat transfer effect of the heat-conducting element 400 between the heat exchange plate 300 and the busbar 120, enhancing the heat exchange efficiency of the heat exchange plate 300 to the busbar 120. On the other hand, it improves the isolation effect of the heat-conducting element 400 between the heat exchange plate 300 and the busbar 120, allowing the heat-conducting element 400 to prevent leaked heat exchange medium from flowing to the busbar 120, ensuring the safety performance of the battery cell 111.
[0057] Reference Figure 5 and Figure 6 In some embodiments, the first frame 220 or the second frame 230 further includes at least two folding portions 224, which are correspondingly disposed on the side of the two side plates 221 away from the bottom plate 223, and the two folding portions 224 are bent in opposite directions from the ends of the side plates 221 along the third direction Z.
[0058] Specifically, the folded portion 224 increases the structural strength of the guide frame 200, preventing deformation due to its excessive length, thus improving its bending resistance and ensuring its support and positioning of the heat exchange plate 300. Furthermore, the folded portion 224 bends in the opposite direction, which helps maintain the opening size of the receiving groove 210, facilitating the placement of the heat exchange plate 300 within it.
[0059] Reference Figure 1 , Figure 5 and Figure 7 In some embodiments, along the second direction Y, the depth of the receiving groove 210 is not less than the thickness of the heat exchange plate 300. That is, the depth of the receiving groove 210 is greater than or equal to the thickness of the heat exchange plate 300.
[0060] Specifically, the receiving groove 210 can fully support the heat exchange plate 300, thus limiting its position and preventing it from shifting. This improves the alignment accuracy between the heat exchange plate 300 and the busbar 120, enhancing the heat exchange effect between the heat exchange plate 300 and the busbar 120. Furthermore, the depth of the receiving groove 210 is sufficient to accommodate any leaked heat exchange medium, preventing it from overflowing into the battery cells 111 and causing a short circuit within the battery pack 10, thereby improving the safety performance of the battery pack 10.
[0061] Correspondingly, another embodiment of this application also provides an electrical device, which includes the battery pack 10 in any of the above embodiments. For example, the electrical device can be a new energy vehicle, a new energy electric vehicle, etc., and the battery pack 10 can be connected to the vehicle body of the electrical device.
[0062] Specifically, electrical devices using the aforementioned battery pack 10 have high safety and long service life.
[0063] Thanks to the improvements to the battery pack 10 described above, the power supply device of this embodiment has the same technical effects as the battery pack 10 described above, which will not be repeated here.
[0064] It should be noted that other undisclosed contents of the battery pack 10 and electrical device provided in this application can be found in the prior art, and will not be repeated here.
[0065] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the content of the specification and drawings of this application under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A battery pack having a first direction (X), a second direction (Y), and a third direction (Z) that are mutually perpendicular, characterized in that, The battery pack includes: A battery module (100) includes multiple cell groups (110) and multiple busbars (120). The multiple cell groups (110) are arranged along the third direction (Z). Each cell group (110) includes multiple battery cells (111). The multiple battery cells (111) are arranged along the first direction (X). Each busbar (120) connects two adjacent battery cells (111). A flow guide (200) extends along the first direction (X) and is attached to the manifold (120) along the second direction (Y). The flow guide (200) has a receiving groove (210). A heat exchange plate (300) is disposed in the receiving groove (210) and is thermally connected to the busbar (120).
2. The battery pack according to claim 1, characterized in that, The battery cell (111) includes a positive terminal (1111) and a negative terminal (1112), the positive terminal (1111) and the negative terminal (1112) are arranged side by side along the third direction (Z), and the busbar (120) connects two adjacent positive terminals (1111) or connects two adjacent negative terminals (1112). The flow guide frame (200) includes a first frame (220) and a second frame (230). The first frame (220) and the second frame (230) both extend along the first direction (X). The first frame (220) and the second frame (230) are arranged side by side along the third direction (Z). The first frame (220) is attached to the busbar (120) of the positive terminal post (1111), and the second frame (230) is attached to the busbar (120) of the negative terminal post (1112).
3. The battery pack according to claim 2, characterized in that, The flow guide (200) also includes a connector (240), one end of which is connected to the first frame (220), and the other end of which is connected to the second frame (230).
4. The battery pack according to claim 3, characterized in that, The connector (240), the first frame (220) and the second frame (230) are integrally formed.
5. The battery pack according to claim 3, characterized in that, The connector (240) has a connecting groove (241) extending along the third direction (Z), the connecting groove (241) connecting the receiving groove (210) of the first frame (220) and the receiving groove (210) of the second frame (230).
6. The battery pack according to claim 5, characterized in that, The heat exchange plate (300) includes a first plate body (310), a second plate body (320), and a collector body (330). The first plate body (310) and the second plate body (320) both extend along the first direction (X). The first plate body (310) and the second plate body (320) are spaced apart along the third direction (Z). The collector body (330) is connected to one end of the first plate body (310) and one end of the second plate body (320) along the third direction (Z). The connector (240) is connected to one end of the first frame (220) and one end of the second frame (230) along the third direction (Z). The first plate (310) is disposed in the receiving groove (210) of the first frame (220), the second plate (320) is disposed in the receiving groove (210) of the second frame (230), and the collector (330) is disposed in the connecting groove (241).
7. The battery pack according to claim 6, characterized in that, The first frame (220) or the second frame (230) includes at least two side plates (221) and at least two guide plates (222). The two side plates (221) are arranged opposite each other along the third direction (Z). The two guide plates (222) are correspondingly connected to the ends of the two side plates (221) away from the connector (240), and the two guide plates (222) extend from the ends of the side plates (221) in opposite directions along the first direction (X).
8. The battery pack according to claim 2, characterized in that, The first frame (220) or the second frame (230) includes a base plate (223) and at least two side plates (221). The two side plates (221) are respectively connected to the opposite sides of the base plate (223) along the third direction (Z) along the second direction (Y). The base plate (223) is attached to the busbar (120). The base plate (223) and the two side plates (221) form the receiving groove (210). The base plate (223) has a window area (2231) that connects to the receiving groove (210) and exposes the busbar (120) so that the busbar (120) and the heat exchange plate (300) are thermally connected.
9. The battery pack according to claim 8, characterized in that, The base plate (223) further includes a receiving part (2232) and a plurality of partitions (2233). The receiving part (2232) surrounds the circumference of the window opening area (2231). The plurality of partitions (2233) are spaced apart along the first direction (X) to divide the window opening area (2231) into a plurality of window opening spaces (22311). Each partition (2233) is connected to the receiving part (2232). Along the second direction (Y), the orthographic projection of the window space (22311) onto a plane perpendicular to the second direction (Y) covers the orthographic projection of the busbar (120) onto a plane perpendicular to the second direction (Y).
10. The battery pack according to claim 9, characterized in that, The battery pack also includes a heat-conducting element (400), which is at least partially disposed within the window space (22311). One side of the heat-conducting element (400) is attached to the heat exchange plate (300), and the other side of the heat-conducting element (400) is attached to the busbar (120).
11. The battery pack according to claim 10, characterized in that, The heat-conducting component (400) includes a first body part (410) and a second body part (420), the second body part (420) being connected to the first body part (410) along the second direction (Y), and the first body part (410) being disposed within the window space (22311); The battery pack also includes a blocking member (500) disposed on the side of the receiving portion (2232) away from the receiving groove (210), and the blocking member (500) circumferentially surrounds the second body portion (420).
12. The battery pack according to claim 8, characterized in that, The first frame (220) or the second frame (230) further includes at least two folding portions (224), the two folding portions (224) being respectively disposed on the side of the two side plates (221) away from the bottom plate (223), and the two folding portions (224) bending from the ends of the side plates (221) in opposite directions along the third direction (Z).
13. The battery pack according to claim 1, characterized in that, Along the second direction (Y), the depth of the receiving groove (210) is not less than the thickness of the heat exchange plate (300).
14. An electrical appliance, characterized in that, include: The battery pack as claimed in any one of claims 1 to 13.