Battery and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and electric equipment.The battery comprises a shell, a pole and a pole group, the pole group is arranged in the shell, the shell is provided with a connecting hole penetrating through the side wall of the shell in the first direction, the pole covers the outer side of the connecting hole, the pole group comprises tabs, and the tabs are arranged on the outer side of the connecting hole. One end, far away from the pole group, of the pole lug can extend into the connecting hole and is connected with the pole column. According to the battery and the electric equipment provided by the invention, the internal space of the shell is effectively prevented from being occupied by the connecting structure of the pole lug and the pole column, and the utilization rate of the internal space of the shell is improved, so that the volume capacity density of the battery is effectively improved.

Description

Technical Field

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

[0002] The energy density of a battery is an important indicator of battery performance and one of the determining factors of battery life. Improving the energy density of a battery has become a hot research and development direction in the field of battery technology in recent years. With the development of battery technology, the means of improving the density of battery capacity have gradually reached a bottleneck. For example, today's batteries include poles, pole groups, and shells. Usually, the poles penetrate the shell and are connected to the pole groups, which requires the connection structure between the pole groups and the poles to occupy part of the internal space of the shell, thereby affecting the energy density of the battery. Utility Model Content

[0003] The purpose of the present application is to provide a battery and an electrical device to solve, to a certain extent, the technical problem existing in the prior art that in today's batteries, the pole usually passes through the shell and is connected to the pole group, which requires the connection structure between the pole group and the pole to occupy part of the internal space of the shell, thereby affecting the energy density of the battery.

[0004] According to a first aspect of the present application, a battery is provided, comprising a shell, a pole column and a pole group, wherein the pole group is arranged in the shell, the shell is provided with a connecting hole penetrating the side wall of the shell along a first direction, the pole column cover is arranged on the outside of the connecting hole, and the pole group comprises a pole ear, and an end of the pole ear away from the pole group can extend into the connecting hole and be connected to the pole column.

[0005] Preferably, it further comprises a fixing ring portion, wherein the fixing ring portion is arranged on the outside of the shell and fixedly connected to the shell;

[0006] At least a portion of the pole is disposed between the fixing ring portion and the housing.

[0007] Preferably, the shell is provided with a placement platform recessed into the interior of the shell, the connecting hole is provided on the placement platform, and the fixing ring portion is provided in the placement platform.

[0008] Preferably, the fixed ring portion comprises an outer edge ring, a support tube and an inner edge ring;

[0009] The support tube extends along the first direction, the outer edge ring and the inner edge ring are respectively fixedly arranged at two ends of the support tube in the first direction, the outer edge ring extends from the support tube to the outside of the support tube, and the inner edge ring extends from the support tube to the inside of the support tube;

[0010] The fixing ring portion is fixedly connected to the shell via the outer edge ring, and at least a portion of the pole is clamped between the shell and the inner edge ring.

[0011] Preferably, it further comprises a lower plastic part, which is arranged to fit the side wall from the inner side of the shell, and is provided with a through hole penetrating the lower plastic part along the first direction, and the pole ear penetrates the through hole and is connected to the pole.

[0012] Preferably, the lower plastic part is provided with a thinning area, the thinning area and the connecting hole are arranged opposite to each other along the first direction, and the thickness of the thinning area of ​​the lower plastic part is smaller than the thickness of other areas of the lower plastic part.

[0013] Preferably, an insulating stop edge is provided on a side of the lower plastic part facing the pole, and the insulating stop edge is provided along an inner wall of the connecting hole.

[0014] Preferably, it also includes an insulating sealing assembly for insulating the housing and the pole;

[0015] The insulating sealing assembly comprises:

[0016] An upper plastic part, covering a portion of the fixing ring part that is not connected to the housing, so as to insulate the fixing ring part from the pole;

[0017] A sealing ring is arranged between the pole and the shell, and the sealing ring is connected to the upper plastic part and surrounds the insulating stop edge.

[0018] Preferably, a connecting piece is further included, and the connecting piece includes:

[0019] A clamping portion, provided with a clamping groove extending along the first direction, wherein the tab can be clamped in the clamping groove;

[0020] The fitting portion is fixedly connected to an end of the clamping portion in the first direction away from the pole group, and the fitting portion can fit with a portion of the pole exposed by the connecting hole.

[0021] According to the second aspect of the present application, there is provided an electrical device, comprising a battery as described in any of the above technical solutions, and thus having all the beneficial technical effects of the battery, which will not be described in detail herein.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] The battery provided in the present application arranges the pole cover on the outside of the shell, and allows the end of the pole ear away from the pole group to extend into the connecting hole and be connected to the pole in the connecting hole, thereby utilizing the thickness space of the shell (i.e., the internal space of the connecting hole) to achieve the connection between the pole ear and the pole, thereby effectively avoiding the connection structure between the pole ear and the pole occupying the internal space of the shell, improving the space utilization inside the shell, and effectively improving the volume capacity density of the battery.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the explosion structure of a battery provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the top view of the battery provided in an embodiment of the present application;

[0028] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of a battery obtained by cutting along AA provided;

[0029] Figure 4 for Figure 3 A schematic diagram of the partial enlarged structure of the battery provided at position B;

[0030] Figure 5 A schematic diagram of a pole structure provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of another pole structure provided in an embodiment of the present application.

[0032] Reference numerals:

[0033] 1-pole; 2-shell; 21-placement platform; 22-connecting hole; 23-fixing ring; 231-inner edge ring; 232-support tube; 233-outer edge ring; 24-bottom support plate; 25-bottom plate; 3-lower plastic part; 31-insulating retaining edge; 32-thinning area; 33-upper plastic part; 34-sealing ring; 35-ventilation hole; 4-pole group; 41-pole ear; 5-connecting piece; 51-clamping part; 52-fitting part; 6-insulating film; 7-explosion-proof valve; 8-sealing nail; 81-sealing cover.

[0034] F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0035] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0036] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0037] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Refer to the following Figures 1 to 6The present invention describes a battery and an electrical device according to some embodiments of the present application.

[0041] See also Figures 1 to 6 As shown, an embodiment of the present application provides a battery, which includes a shell 2, a pole 1 and a pole group 4, wherein the pole group 4 is arranged in the shell 2, and the shell 2 is provided with a connection hole 22 that penetrates the side wall of the shell 2 along a first direction F1, and the pole 1 is covered on the outside of the connection hole 22, and the pole group 4 includes a pole ear 41, and the end of the pole ear 41 away from the pole group 4 can extend into the connection hole 22 and be connected to the pole 1 in the connection hole 22. In this way, by covering the pole 1 on the outside of the shell 2, and allowing the end of the pole ear 41 away from the pole group 4 to extend into the connection hole 22 and be connected to the pole 1, the thickness space of the shell 2 (i.e., the internal space of the connection hole 22) is utilized to realize the connection between the pole ear 41 and the pole 1, thereby effectively avoiding the connection structure between the pole ear 41 and the pole 1 occupying the internal space of the shell 2, improving the space utilization inside the shell 2, and effectively improving the volume capacity density of the battery.

[0042] See also Figures 1 to 4 As shown, F1 in the figure may be an example of the first direction. To facilitate the illustration of the directions in the figure, two mutually perpendicular directions on a plane perpendicular to the first direction F1 are defined as a second direction F2 and a third direction F3. F2 in the figure may be an example of the second direction, and F3 in the figure may be an example of the third direction. Preferably, the first direction F1 may be the length direction of the battery, the second direction F2 may be the thickness direction of the battery, and the third direction F3 may be the width direction of the battery.

[0043] Preferably, if Figure 3 and Figure 4 As shown, the battery may further include a fixing ring 23, which is disposed outside the housing 2 and fixedly connected to the housing 2. At least part of the pole 1 is disposed between the fixing ring 23 and the housing 2 to fix the pole 1.

[0044] Preferably, if Figure 3 and Figure 4 As shown, the fixed ring portion 23 may include an outer edge ring 233, a support tube 232 and an inner edge ring 231. The support tube 232 extends along the first direction F1, and the outer edge ring 233 and the inner edge ring 231 are respectively fixedly arranged at both ends of the support tube 232 in the first direction F1, the outer edge ring 233 extends from the support tube 232 to the outside of the support tube 232, and the inner edge ring 231 extends from the support tube 232 to the inside of the support tube 232. The fixed ring portion 23 is fixedly connected to the housing 2 via the outer edge ring 233, and at least part of the pole 1 is clamped between the housing 2 and the inner edge ring 231.

[0045] Preferably, if Figure 3and Figure 4 As shown, the pole 1 may include a pole 1 body and an outer edge of the pole 1. The outer edge of the pole 1 may be arranged along the pole 1 body, and the thickness of the outer edge of the pole 1 in the first direction F1 is less than the thickness of the pole 1 body. The outer edge of the pole 1 is clamped between the shell 2 and the outer edge ring 233 to fix the pole 1. This can effectively reduce the size of the fixing ring portion 23 in the first direction F1 and save the space occupied by the pole 1.

[0046] Preferably, if Figures 1 to 4 As shown, the shell 2 may be provided with a placement platform 21 recessed into the shell 2 , the connection hole 22 may be provided in the placement platform 21 , and the fixing ring portion 23 may be provided in the placement portion, further saving the space occupied by the fixing ring portion 23 .

[0047] Preferably, if Figure 3 and Figure 4 As shown, the outer edge of the outer edge ring 233 can be abutted against the edge of the mounting platform 21, and the size of the outer edge ring 233 in the first direction F1 can be equal to the distance between the mounting platform 21 and the outer surface of the shell 2 in the first direction F1. In this way, when the fixing ring portion 23 is set on the mounting platform 21, the upper surface of the outer edge ring 233 can be aligned with the upper surface of the shell 2, thereby ensuring the flatness of the upper surface of the battery.

[0048] like Figure 5 As shown in the figure, the pole 1 is shown as a cylindrical example, and correspondingly, the fixing ring portion 23 can be in a circular ring shape. Figure 6 As shown in the figure, the pole 1 is a square pole, and correspondingly, the fixing ring portion 23 can be a square ring. However, it is not limited to this, and the shape of the pole 1 is not limited to the above form. The pole 1 can also be a polygonal pole, an elliptical pole or other special-shaped poles, and correspondingly, the fixing ring portion 23 can be a polygonal ring, an elliptical ring or other special-shaped rings.

[0049] Preferably, if Figures 3 to 6 As shown, the battery may further include an insulating sealing assembly for insulating the housing 2 and the pole 1 , thereby preventing the positive and negative poles from being short-circuited through the housing 2 .

[0050] Preferably, if Figure 1 , Figure 3 and Figure 4 As shown, the above-mentioned insulating sealing assembly may include an upper plastic part 33, which may cover the portion of the fixing ring part 23 that is not connected to the housing 2. On the one hand, it can effectively isolate the fixing ring part 23 and the pole 1, and on the other hand, it can effectively reduce the probability of leakage through the fixing ring part 23.

[0051] Alternatively, if Figure 3 and Figure 4 As shown, the upper plastic part 33 can cover the inner side of the support tube 232, the lower surface of the inner edge ring 231, the inner side of the inner edge ring 231, the upper surface of the inner edge ring 231 and the outer side of the support tube 232 in sequence from the inner side of the support tube 232 away from the inner edge ring 231, until it extends to the upper surface of the outer edge ring 233, so as to completely cover the part of the fixed ring part 23 that is not connected to the shell 2.

[0052] In an embodiment, Figures 1 to 4 As shown, the battery may further include a lower plastic part 3 , which is arranged on the inner side of the shell 2 in close contact with the side wall, and is provided with a through hole penetrating the lower plastic part 3 along the first direction F1 , and the pole lug 41 penetrates the through hole and is connected to the pole 1 .

[0053] Correspondingly, the upper surface of the lower plastic part 3 is provided with a groove corresponding to the shape of the placement platform 21, and the above-mentioned placement platform 21 can be embedded in the groove of the lower plastic part 3. In this way, the thickness of the lower plastic part 3 is thinned by the groove, which effectively avoids the placement platform 21 from being recessed and occupying the internal space of the shell 2.

[0054] Preferably, if Figure 1 , Figure 3 and Figure 4 As shown, the lower plastic part 3 is provided with a thinning area 32, and the thinning area 32 and the connecting hole 22 are arranged opposite to each other along the first direction F1. The thickness of the thinning area 32 of the lower plastic part 3 is less than the thickness of other areas of the lower plastic part 3. In this way, on the one hand, by thinning the portion of the lower plastic part 3 corresponding to the connecting hole 22, it is possible to effectively expand the assembly space of the connection structure between the pole 1 and the pole lug 41 while ensuring that the space size occupied by both the lower plastic part 3 and the shell 2 in the first direction F1 remains unchanged, so as to facilitate the assembly of the pole lug 41 and the pole 1; on the other hand, by providing the thinning area 32, the size of the pole lug 41 passing through the lower plastic part 3 can be effectively shortened. Under the condition that the length of the pole lug 41 remains unchanged, the length of the portion of the pole lug 41 connected to the pole 1 can be effectively increased by providing the thinning area 32, thereby ensuring the flow area of ​​the pole 1.

[0055] Preferably, if Figure 3 and Figure 4 As shown, an insulating stop 31 can be provided on the side of the lower plastic part 3 facing the pole 1, and the insulating stop 31 can be provided along the inner wall of the connecting hole 22. In this way, on the one hand, it is convenient to limit the position between the lower plastic part 3 and the shell 2; on the other hand, the insulating stop 31 can effectively insulate the inner wall of the connecting hole 22, thereby preventing the pole ear 41 from contacting the shell 2 in the connecting hole 22.

[0056] Preferably, if Figure 3 and Figure 4As shown, the above-mentioned insulating sealing assembly can also include a sealing ring 34, which is arranged between the pole 1 and the shell 2, and the sealing ring 34 is connected to the upper plastic part 33 and surrounds the insulating barrier 31 to insulate the part of the shell 2 not covered by the upper plastic part 33 and the insulating barrier 31.

[0057] Preferably, if Figure 1 , Figure 3 and Figure 4 As shown, the battery may further include a connecting piece 5 , and the pole lug 41 may be connected to the pole 1 via the connecting piece 5 .

[0058] Preferably, if Figure 4 As shown, the connecting piece 5 may include a clamping portion 51, wherein the clamping portion 51 may be provided with a clamping groove extending along the first direction F1, and the pole lug 41 may be clamped in the clamping groove, so that the clamping groove can be closely connected to the pole lug 41 from both sides of the pole lug 41, on the one hand, the setting stability of the portion of the pole lug 41 connected to the pole 1 is effectively improved, and the risk of breakage and tearing in the portion is reduced; on the other hand, the contact area between the pole lug 41 and the connecting piece 5 is effectively increased, and the flow area of ​​both the pole lug 41 and the pole 1 is further increased.

[0059] Preferably, if Figure 4 As shown, the connecting piece 5 may further include a fitting portion 52, which may be fixedly connected to an end of the clamping portion 51 away from the pole group 4 in the first direction F1, and the fitting portion 52 may fit with the portion of the pole 1 exposed by the connecting hole 22, so that, by setting the fitting portion 52 and the clamping portion 51, on the one hand, the flow area of ​​both the pole lug 41 and the pole 1 may be effectively increased; on the other hand, by setting the fitting portion 52 parallel to the bottom surface of the pole 1 and the clamping portion 51 extending along the first direction F1, the bending of the pole lug 41 may be effectively replaced, thereby further reducing the risk of the pole lug 41 being broken or torn.

[0060] Preferably, the battery may include two poles 1, namely a positive pole and a negative pole, and correspondingly, the connection holes 22 may also include two. The arrangement of the positive pole and the negative pole is the same as the arrangement direction of the pole 1, which will not be repeated here.

[0061] Preferably, if Figure 1 As shown, the battery may further include an explosion-proof valve 7, which may be disposed on the side of the housing 2 where the pole 1 is located, so as to facilitate the discharge of gas in the housing 2 and ensure the safety of the battery.

[0062] Preferably, if Figure 1 As shown, the lower plastic part 3 may further include a vent hole 35 , and the vent hole 35 and the explosion-proof valve 7 may be arranged opposite to each other along the first direction F1 to ensure smooth discharge of gas in the battery.

[0063] Preferably, if Figure 1 As shown, the shell 2 is also provided with a liquid injection hole for the battery to inject electrolyte into the shell.

[0064] Preferably, if Figure 1 As shown, the battery may further include a sealing nail 8 and a sealing cover 81. The sealing nail 8 may be nailed into the injection hole, and the sealing cover 81 may be covered on the injection hole to seal the injection hole.

[0065] Alternatively, if Figure 1 As shown, the battery may further include an insulating film 6 , which may be coated on the outside of the electrode group 4 to achieve insulation between the electrode group 4 and the housing 2 .

[0066] Alternatively, if Figure 1 As shown, the battery may further include a bottom support plate 24 , which may be disposed on a side of the electrode group facing away from the electrode column 1 , and the insulating film 6 may be connected to the bottom support plate 24 by hot-melt connection to facilitate the wrapping and fixing of the insulating film 6 .

[0067] Alternatively, if Figure 1 As shown, the housing 2 may further include a bottom plate 25 , which is covered on one side of the housing 2 where the bottom support plate 24 is located, so as to facilitate assembly of the housing 2 .

[0068] It should be noted that the explosion-proof valve 7, sealing nail 8, sealing cover 81 and insulating film 6 are all existing structures in the battery field and will not be described in detail here.

[0069] The embodiments of the present application also provide an electrical device, including the battery described in any of the above embodiments, and thus, has all the beneficial technical effects of the battery, which will not be described in detail here.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: It includes a shell, a pole and a pole group, the pole group is arranged in the shell, the shell is provided with a connecting hole that penetrates the side wall of the shell along a first direction, the pole cover is arranged on the outside of the connecting hole, and the pole group includes a pole ear, and one end of the pole ear away from the pole group can extend into the connecting hole and be connected to the pole.

2. The battery according to claim 1, characterized in that It also includes a fixing ring portion, which is arranged on the outside of the shell and fixedly connected to the shell; At least a portion of the pole is disposed between the fixing ring portion and the housing.

3. The battery according to claim 2, characterized in that The shell is provided with a placement platform recessed into the shell, the connection hole is provided on the placement platform, and the fixing ring portion is provided in the placement platform.

4. The battery according to claim 2, characterized in that The fixed ring portion comprises an outer edge ring, a support tube and an inner edge ring; The support tube extends along the first direction, the outer edge ring and the inner edge ring are respectively fixedly arranged at two ends of the support tube in the first direction, the outer edge ring extends from the support tube to the outside of the support tube, and the inner edge ring extends from the support tube to the inside of the support tube; The fixing ring portion is fixedly connected to the shell via the outer edge ring, and at least a portion of the pole is clamped between the shell and the inner edge ring.

5. The battery according to any one of claims 2 to 4, characterized in that It also includes a lower plastic part, which is arranged on the inner side of the shell and is attached to the side wall. The lower plastic part is provided with a through hole that penetrates the lower plastic part along the first direction. The pole ear penetrates the through hole and is connected to the pole.

6. The battery according to claim 5, characterized in that The lower plastic part is provided with a thinning area, the thinning area and the connecting hole are arranged opposite to each other along the first direction, and the thickness of the thinning area of ​​the lower plastic part is smaller than the thickness of other areas of the lower plastic part.

7. The battery according to claim 5, characterized in that An insulating stop edge is arranged on one side of the lower plastic part facing the pole, and the insulating stop edge is arranged along the inner wall of the connecting hole.

8. The battery according to claim 7, characterized in that Also included is an insulating sealing assembly for insulating both the housing and the pole; The insulating sealing assembly comprises: An upper plastic part, covering a portion of the fixing ring part that is not connected to the housing, so as to insulate the fixing ring part from the pole; A sealing ring is arranged between the pole and the shell, and the sealing ring connects the upper plastic part and the insulating stop edge.

9. The battery according to claim 1, characterized in that Also included is a connecting piece, the connecting piece comprising: A clamping portion, provided with a clamping groove extending along the first direction, wherein the tab can be clamped in the clamping groove; The fitting portion is fixedly connected to an end of the clamping portion in the first direction away from the pole group, and the fitting portion can fit with a portion of the pole exposed by the connecting hole.

10. An electrical device, characterized in that: A battery comprising the battery according to any one of claims 1 to 9.

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