Battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and electric equipment, and the battery pack comprises a bottom plate assembly, a frame and a cover body, the bottom plate assembly comprises a first plate body, a second plate body and an elastic supporting piece, the first plate body and the second plate body are both connected with the frame, the first plate body and the second plate body are arranged at intervals in the first direction, and the elastic supporting piece is connected between the first plate body and the second plate body; due to the fact that the second supporting section of the elastic supporting piece protrudes towards the second plate body relative to the first plate body and forms the arch-shaped structure, if the bottom plate assembly is impacted in the first direction, the second supporting section of the arch-shaped structure can be compressed and deformed in the first direction, and therefore impact is absorbed, and the battery pack has good impact resistance. Besides, the first plate body and the second plate body are arranged at an interval, the bottom plate assembly ensures the impact resistance of the battery pack through the elastic supporting piece, and the thickness and the density of the first plate body and the second plate body do not need to be too large, so that the weight of the bottom plate assembly can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack and electrical equipment. Background Technology

[0002] The battery pack's casing includes a frame and a base plate. The frame is connected to the base plate, and the two form an installation space for housing the battery. The base plate is usually made of high-strength metal plate or multi-layer composite material plate. This type of base plate has a relatively high density, which results in high strength, thereby ensuring the impact resistance of the bottom of the battery pack. However, although the battery pack using this type of base plate has good impact resistance, its weight is also relatively large due to the high density of the base plate. Utility Model Content

[0003] The primary objective of this invention is to propose a battery pack that combines good impact resistance with light weight.

[0004] To achieve the above objectives, this utility model provides a battery pack having intersecting first and second directions, including a base plate assembly, a frame, and a cover. The base plate assembly, the frame, and the cover are connected along the first direction. The base plate assembly includes a first plate, a second plate, and an elastic support member. The first plate is connected to the frame; the second plate is connected to the frame, and the first plate and the second plate are spaced apart along the first direction. The elastic support member is disposed between the first plate and the second plate, and the elastic support member includes multiple first support segments and multiple second support segments. The multiple first support segments are alternately arranged along the second direction, and two adjacent first support segments are connected through a second support segment. The first support segments are connected to the first plate, and the second support segments protrude towards the second plate relative to the first plate to form an arched structure, and the second support segments are connected to the second plate.

[0005] In a specific embodiment of this invention, the second plate has a liquid cooling channel.

[0006] In a specific embodiment of this utility model, the battery pack has a third direction, and the first direction, the second direction, and the third direction intersect each other; the second plate includes a plate body and a boss; the plate body is connected to the frame, and the first plate and the plate body are spaced apart along the first direction; the boss is strip-shaped, and the length direction of the boss is the same as the third direction, the boss has a flow channel groove, the boss is connected to the side of the plate body facing the first plate body, the groove wall of the flow channel groove and the plate body define the liquid cooling flow channel, the number of bosses is multiple, the multiple bosses are spaced apart along the second direction, and each liquid cooling flow channel is interconnected; wherein, the second support section is connected to the plate body, and the second support section is located between two adjacent bosses.

[0007] In a specific embodiment of this utility model, the boss includes a plurality of first connecting segments and a plurality of second connecting segments. The plurality of first connecting segments are spaced apart along the third direction, and two adjacent first connecting segments are connected by a second connecting segment. The liquid cooling channel passes through the first connecting segments and the second connecting segments. The second connecting segment protrudes relative to the first connecting segment along the second direction. In the second direction, the second support segment is located between two adjacent second connecting segments.

[0008] In a specific embodiment of this utility model, the second connecting segment includes a first segment, a second segment, and a third segment. The first segment is in the shape of a straight strip, and its length direction is the same as the third direction. The length directions of the second segment and the third segment are oblique to the second direction. The first segment is connected to the second segment and the third segment at both ends of its length direction, respectively. The first segment is connected to the first connecting segment through the second segment and the third segment.

[0009] In a specific embodiment of this utility model, the second support segment includes a fourth segment, a fifth segment, and a sixth segment. The fourth segment is straight and its length direction is the same as the third direction. The length directions of the fifth and sixth segments are oblique to the second direction. The two ends of the fourth segment along its length direction are connected to the fifth and sixth segments, respectively. In the second connecting segment and the second support segment adjacent in the second direction, the first, second, and third segments together form a slot. The fourth, fifth, and sixth segments are engaged in the slot. The first and fourth segments are arranged along the second direction, the second and fifth segments are arranged along the second direction, and the third and sixth segments are arranged along the second direction.

[0010] In a specific embodiment of this utility model, the first support segment is welded to the first plate.

[0011] In a specific embodiment of the present invention, the battery pack further includes an adhesive layer disposed between the second support section and the second plate, and the adhesive layer connects the second support section and the second plate.

[0012] In a specific embodiment of this utility model, the first support segment has a through hole extending along the first direction.

[0013] To achieve the same purpose, this utility model also provides an electrical device, including the battery pack as described above.

[0014] The present invention discloses a battery pack and electrical device, which, compared with the prior art, have the following advantages:

[0015] The battery pack of this utility model has a base plate assembly comprising a first plate, a second plate, and an elastic support member. Both the first and second plates are connected to a frame and are spaced apart along a first direction. The elastic support member connects the first and second plates. Since the second support segment of the elastic support member protrudes towards the second plate relative to the first plate, forming an arched structure, if the base plate assembly is impacted in the first direction, the arched second support segment will compress and deform in that direction, thereby absorbing the impact. Based on this, the battery pack has good impact resistance. Furthermore, because the first and second plates are spaced apart, and the base plate assembly uses the elastic support member to ensure the battery pack's impact resistance, the thickness and density of the first and second plates do not need to be too large. Therefore, the base plate assembly is relatively lightweight. In other words, the battery pack of this application combines good impact resistance with light weight. Attached Figure Description

[0016] Figure 1 This is a perspective view of the battery pack according to an embodiment of the present invention;

[0017] Figure 2 This is an exploded view of the battery pack with the cover removed according to an embodiment of the present invention;

[0018] Figure 3 This is a sectional perspective view of the base plate assembly in an embodiment of this utility model.

[0019] Figure 4 This is a perspective view of the elastic support member according to an embodiment of the present utility model;

[0020] Figure 5 This is a bottom view of the second plate body according to an embodiment of the present utility model;

[0021] Figure 6 This is an embodiment of the present utility model. Figure 5 An enlarged diagram of A in the diagram.

[0022] In the diagram, Z represents the first direction; X represents the second direction; Y represents the third direction; 1. Base plate assembly; 11. First plate; 12. Second plate; 120. Liquid cooling channel; 121. Plate body; 122. Boss; 1221. First connecting section; 1222. Second connecting section; 12221. First segment; 12222. Second segment; 12223. Third segment; 13. Elastic support; 131. First support segment; 1310. Weight reduction hole; 132. Second support segment; 1321. Fourth segment; 1322. Fifth segment; 1323. Sixth segment; 2. Frame; 3. Cover; 4. Adhesive layer. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0024] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to 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.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the embodiments of the application, "parallel" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is -1° to 1°. "Perpendicular" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is 89° to 91°. Equal distances, equal angles, or equal areas refer to a state in which the tolerance range is -1% to 1%.

[0028] like Figures 1-6 As shown, a battery pack according to a preferred embodiment of the present invention has intersecting first direction Z and second direction X, including a base plate assembly 1, a frame 2, and a cover 3. The base plate assembly 1, the frame 2, and the cover 3 are connected along the first direction Z. The base plate assembly 1 includes a first plate 11, a second plate 12, and an elastic support member 13. The first plate 11 is connected to the frame 2. The second plate 12 is connected to the frame 2, and the first plate 11 and the second plate 12 are spaced apart along the first direction Z. The elastic support member 13 is disposed between the first plate 11 and the second plate 12. The elastic support member 13 includes a plurality of first support segments 131 and a plurality of second support segments 132. The plurality of first support segments 131 are spaced apart along the second direction X, and two adjacent first support segments 131 are connected through a second support segment 132. The first support segment 131 is connected to the first plate 11, and the second support segment 132 protrudes relative to the first plate 11 toward the second plate 12 to form an arched structure. The second support segment 132 is connected to the second plate 12.

[0029] Based on the above solution, the battery pack of the utility model has a base plate assembly 1 comprising a first plate 11, a second plate 12, and an elastic support member 13. Both the first plate 11 and the second plate 12 are connected to the frame 2. The first plate 11 and the second plate 12 are arranged at intervals along the first direction Z. The elastic support member 13 connects the first plate 11 and the second plate 12. Since the second support segment 132 of the elastic support member 13 protrudes relative to the first plate 11 towards the second plate 12 and forms an arched structure, if the base plate assembly 1 is subjected to [something] in the first direction Z... In the event of an impact, the second support section 132 of the arched structure will compress and deform in the first direction Z, thereby absorbing the impact. Based on this, the battery pack has good impact resistance. In addition, since the first plate 11 and the second plate 12 are spaced apart, and the bottom plate assembly 1 ensures the impact resistance of the battery pack through the elastic support member 13, the thickness and density of the first plate 11 and the second plate 12 do not need to be too large. Therefore, the weight of the bottom plate assembly 1 is relatively light. That is, the battery pack of this application has the characteristics of both good impact resistance and light weight.

[0030] like Figure 3 As shown, in order to improve the integration of the battery pack, the second plate 12 has a liquid cooling channel 120. By setting the liquid cooling channel 120 in the second plate 12, the space required for the additional liquid cooling channel 120 in the battery pack is reduced. When the liquid cooling channel 120 is impacted, the impact force can be released to the first plate 11 by the elastic support member 13, thus protecting the liquid cooling channel 120.

[0031] like Figure 3As shown, to reduce the weight and space occupied by the second plate 12, the battery pack has a third direction Y, and the first direction Z, the second direction X, and the third direction Y intersect each other; the second plate 12 includes a plate body 121 and a boss 122; the plate body 121 is connected to the frame 2, and the first plate 11 and the plate body 121 are spaced apart along the first direction Z; the boss 122 is strip-shaped, and the length direction of the boss 122 is the same as the third direction Y. The boss 122 has a flow channel groove 1220, and the boss 122 is connected to the side of the plate body 121 facing the first plate 11. The groove wall of the flow channel groove 1220 and the plate body 121 define a liquid cooling flow channel 120. There are multiple protrusions 122 arranged at intervals along the second direction X, and each liquid cooling channel 120 is interconnected. The second support section 132 is connected to the plate body 121 and is located between two adjacent protrusions 122. By setting up the liquid cooling channel 120 formed by the protrusions 122 and the plate body 121, not only can the weight and space occupied by the second plate 12 be reduced, but the second support section 132 can also be limited. That is, the second support section 132 can always be located between two adjacent protrusions 122, so that when subjected to impact force, the second support section 132 can ensure that the impact force is transmitted to the first plate 11.

[0032] like Figure 5 and Figure 6 As shown, in order to improve the liquid cooling effect of the liquid cooling channel 120, the boss 122 includes a plurality of first connecting sections 1221 and a plurality of second connecting sections 1222. The plurality of first connecting sections 1221 are spaced apart along a third direction Y, and two adjacent first connecting sections 1221 are connected by a second connecting section 1222. The liquid cooling channel 120 passes through the first connecting sections 1221 and the second connecting sections 1222. The second connecting section 1222 protrudes relative to the first connecting section 1221 along a second direction X. In the second direction X, the second support section 132 is located between two adjacent second connecting sections 1222. By setting the first connecting sections 1221 and the second connecting sections 1222, the area of ​​the boss 122 used for heat transfer is increased, thereby improving the liquid cooling effect of the liquid cooling channel 120.

[0033] like Figure 5 and Figure 6As shown, in order to reduce the liquid cooling resistance in the liquid cooling channel 120, the second connecting section 1222 includes a first section 12221, a second section 12222, and a third section 12223. The first section 12221 is straight and its length direction is the same as the third direction Y. The length directions of the second section 12222 and the third section 12223 are oblique to the second direction X. The first section 12221 is connected to the second section 12222 and the third section 12223 at both ends of its length direction, respectively. The first section 12221 is connected to the first connecting section 1221 through the second section 12222 and the third section 12223. By setting the second connecting section 1222 as a trapezoidal structure and making the first section 12221 straight, the liquid cooling resistance in the liquid cooling channel 120 can be reduced.

[0034] like Figure 4 As shown, in order to better fit the second support segment 132 with the second connecting segment 1222, the second support segment 132 includes a fourth segment 1321, a fifth segment 1322, and a sixth segment 1323. The fourth segment 1321 is straight and its length direction is the same as the third direction Y. The length directions of the fifth segment 1322 and the sixth segment 1323 are both oblique to the second direction X. The two ends of the fourth segment 1321 along its length direction are connected to the fifth segment 1322 and the sixth segment 1323, respectively. Among the second connecting segment 1222 and the second support segment 132 adjacent to each other in the second direction X, the first segment... 12221, the second segment 12222, and the third segment 12223 together form a slot. The fourth segment 1321, the fifth segment 1322, and the sixth segment 1323 are engaged in the slot. The first segment 12221 and the fourth segment 1321 are arranged along the second direction X. The second segment 12222 and the fifth segment 1322 are arranged along the second direction X. The third segment 12223 and the sixth segment 1323 are arranged along the second direction X. The second support segment 132 adopts a shape that matches the second connecting segment 1222, so that it can be firmly engaged with the second connecting segment 1222 when subjected to impact force, thereby better transmitting the impact force.

[0035] In a specific embodiment of this utility model, in order to ensure the connection strength between the first support segment 131 and the first plate 11, the first support segment 131 is welded to the first plate 11.

[0036] like Figure 3 As shown, in order to ensure the connection strength between the second support section 132 and the second plate 12, the battery pack also includes an adhesive layer 4, which is disposed between the second support section 132 and the second plate 12, and connects the second support section 132 and the second plate 12.

[0037] like Figure 3 and Figure 4 As shown, the first support section 131 has a through hole 1310 extending along the first direction Z. By setting the through hole 1310, the weight can be reduced on the one hand, and the stress can be dispersed and the deformation can be absorbed on the other hand. When subjected to the impact force in the first direction Z, the through hole 1310 can provide a deformation space in the first direction Z to absorb and disperse the stress.

[0038] A preferred embodiment of the present invention provides an electrical device comprising the aforementioned battery pack.

[0039] In summary, this utility model embodiment provides a battery pack, the base plate assembly 1 of which includes a first plate 11, a second plate 12, and an elastic support member 13. Both the first plate 11 and the second plate 12 are connected to the frame 2, and the first plate 11 and the second plate 12 are arranged at intervals along the first direction Z. The elastic support member 13 is connected between the first plate 11 and the second plate 12. Since the second support segment 132 of the elastic support member 13 protrudes towards the second plate 12 relative to the first plate 11 and forms an arched structure, if the base plate assembly 1 is subjected to force in the first direction Z... When impacted, the second support section 132 of the arched structure will compress and deform in the first direction Z, thereby absorbing the impact. Based on this, the battery pack has good impact resistance. In addition, since the first plate 11 and the second plate 12 are spaced apart, and the bottom plate assembly 1 ensures the impact resistance of the battery pack through the elastic support member 13, the thickness and density of the first plate 11 and the second plate 12 do not need to be too large. Therefore, the weight of the bottom plate assembly 1 is relatively light. That is, the battery pack of this application has the characteristics of good impact resistance and light weight.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery pack having intersecting first direction (Z) and second direction (X), characterized in that, It includes a base plate assembly (1), a frame (2), and a cover (3), wherein the base plate assembly (1), the frame (2), and the cover (3) are connected along the first direction (Z); The base plate assembly (1) includes a first plate (11), a second plate (12), and an elastic support member (13); The first plate (11) is connected to the frame (2); The second plate (12) is connected to the frame (2), and the first plate (11) and the second plate (12) are spaced apart along the first direction (Z); The elastic support member (13) is disposed between the first plate (11) and the second plate (12). The elastic support member (13) includes a plurality of first support segments (131) and a plurality of second support segments (132). The plurality of first support segments (131) are spaced apart along the second direction (X), and two adjacent first support segments (131) are connected by a second support segment (132). The first support segment (131) is connected to the first plate (11), and the second support segment (132) protrudes toward the second plate (12) relative to the first plate (11) to form an arched structure. The second support segment (132) is connected to the second plate (12).

2. The battery pack according to claim 1, characterized in that, The second plate (12) has a liquid cooling channel (120).

3. The battery pack according to claim 2, characterized in that, The battery pack has a third direction (Y), and the first direction (Z), the second direction (X), and the third direction (Y) intersect each other; The second plate (12) includes a plate body (121) and a boss (122); The main body of the plate (121) is connected to the frame (2), and the first plate (11) and the main body of the plate (121) are spaced apart along the first direction (Z); The boss (122) is strip-shaped, and the length direction of the boss (122) is the same as the third direction (Y). The boss (122) has a flow channel groove (1220). The boss (122) is connected to the side of the plate body (121) facing the first plate body (11). The groove wall of the flow channel groove (1220) and the plate body (121) define the liquid cooling flow channel (120). There are multiple bosses (122), and multiple bosses (122) are arranged at intervals along the second direction (X). Each liquid cooling flow channel (120) is interconnected. The second support segment (132) is connected to the plate body (121), and the second support segment (132) is located between two adjacent bosses (122).

4. The battery pack according to claim 3, characterized in that, The boss (122) includes a plurality of first connecting segments (1221) and a plurality of second connecting segments (1222). The plurality of first connecting segments (1221) are spaced apart along the third direction (Y), and two adjacent first connecting segments (1221) are connected by a second connecting segment (1222). The liquid cooling channel (120) passes through the first connecting segments (1221) and the second connecting segments (1222). The second connecting segment (1222) protrudes relative to the first connecting segment (1221) along the second direction (X), and in the second direction (X), the second support segment (132) is located between two adjacent second connecting segments (1222).

5. The battery pack according to claim 4, characterized in that, The second connecting segment (1222) includes a first segment (12221), a second segment (12222), and a third segment (12223). The first segment (12221) is straight and its length direction is the same as the third direction (Y). The length directions of the second segment (12222) and the third segment (12223) are oblique to the second direction (X). The first segment (12221) is connected to the second segment (12222) and the third segment (12223) at both ends of its length direction, respectively. The first segment (12221) is connected to the first connecting segment (1221) through the second segment (12222) and the third segment (12223).

6. The battery pack according to claim 5, characterized in that, The second support segment (132) includes a fourth segment (1321), a fifth segment (1322), and a sixth segment (1323). The fourth segment (1321) is straight and its length direction is the same as the third direction (Y). The length directions of the fifth segment (1322) and the sixth segment (1323) are oblique to the second direction (X). The two ends of the fourth segment (1321) along its length direction are connected to the fifth segment (1322) and the sixth segment (1323) respectively. In the second connecting segment (1222) and the second supporting segment (132) adjacent in the second direction (X), the first segment (12221), the second segment (12222), and the third segment (12223) together form a slot, and the fourth segment (1321), the fifth segment (1322), and the sixth segment (1323) are engaged in the slot. The first segment (12221) and the fourth segment (1321) are arranged along the second direction (X), the second segment (12222) and the fifth segment (1322) are arranged along the second direction (X), and the third segment (12223) and the sixth segment (1323) are arranged along the second direction (X).

7. The battery pack according to claim 1, characterized in that, The first support section (131) is welded to the first plate (11).

8. The battery pack according to claim 1 or 7, characterized in that, The battery pack also includes an adhesive layer (4), which is disposed between the second support section (132) and the second plate (12), and the adhesive layer (4) connects the second support section (132) and the second plate (12).

9. The battery pack according to claim 1, characterized in that, The first support segment (131) has a through hole (1310) extending along the first direction (Z).

10. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1-9.

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