Battery and battery pack

Abstract

The application provides a battery and a battery pack. The battery comprises a shell, a pole, a core package and a connecting piece. The shell comprises a shell body and a cover plate arranged along a first direction. The shell body and the cover plate enclose a cavity. The cover plate is provided with a mounting hole. The pole is mounted in the mounting hole. The core package and the connecting piece are arranged in the cavity. The side of the core package close to the cover plate is provided with a tab. The connecting piece comprises a first connecting section and a second connecting section arranged opposite to each other along the first direction. The first connecting section is connected with the pole, and the second connecting section is connected with the tab. The connecting piece further comprises a conductive structure. One end of the first connecting section and one end of the second connecting section are respectively connected with the conductive structure. The conductive structure further comprises an abutting portion between the first connecting section and the second connecting section. The abutting portion abuts against the first connecting section and / or the second connecting section, so as to improve the current carrying capacity between the conductive structure and the first connecting section and / or the second connecting section. The current carrying capacity of the connecting piece is increased without the need to additionally increase the thickness of the connecting piece.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery and a battery pack. Background Technology

[0002] A battery typically consists of terminals, cells, and connectors that connect the terminals and cells. As the required charging and discharging power of batteries increases, the current-carrying capacity of the connectors also needs to be improved. In related technologies, the current-carrying capacity of the connectors can be increased by increasing their thickness. However, the limited internal space of a battery restricts the thickness of the connectors, making it impossible for their current-carrying capacity to meet the requirements. Utility Model Content

[0003] The embodiments of this application provide a battery and a battery pack that can improve the technical problem of insufficient overcurrent capacity of battery connectors.

[0004] In a first aspect, embodiments of this application provide a battery, comprising: The outer casing includes a housing and a cover plate disposed along a first direction, wherein the housing and the cover plate enclose a cavity, and the cover plate has mounting holes. The pole is installed in the mounting hole; A core package is disposed within the cavity, and an electrode tab is provided on the side of the core package near the cover plate; A connector is disposed within the cavity. The connector includes a first connecting segment and a second connecting segment that are spaced apart from each other along the first direction. The first connecting segment is connected to the pole post, and the second connecting segment is connected to the pole tab. The connector also includes a conductive structure, with one end of the first connecting segment and one end of the second connecting segment respectively connected to the conductive structure. The conductive structure further includes an abutting portion located between the first connecting segment and the second connecting segment, the abutting portion abutting against the first connecting segment and / or the second connecting segment.

[0005] In one embodiment, the conductive structure includes an intermediate connecting segment located between the first connecting segment and the second connecting segment, one end of the first connecting segment being connected to one end of the intermediate connecting segment along a second direction, and one end of the second connecting segment being connected to the other end of the intermediate connecting segment along a second direction, wherein the first direction and the second direction are arranged at an angle. The intermediate connecting section has a protruding abutment portion on the side facing the first connecting section, which abuts against the first connecting section. This allows the intermediate connecting section to be electrically connected to one end of the first connecting section along the second direction, and also electrically connected to the first connecting section via the abutment portion. This improves the current-carrying area between the intermediate connecting section and the first connecting section, thereby increasing the current-carrying capacity of the connector; and / or, The intermediate connecting section has a protruding abutting part on one side facing the second connecting section, which abuts against the second connecting section. This allows the intermediate connecting section to be electrically connected to one end of the second connecting section along the second direction, and also to the second connecting section through the abutting part. This helps to increase the flow area between the intermediate connecting section and the second connecting section, thereby improving the flow capacity of the connector.

[0006] In one embodiment, the intermediate connecting segment has an opening corresponding to the position of the abutment portion, and at least one end of the abutment portion is connected to the edge of the opening. Therefore, the intermediate connecting segment can be stamped to form the opening and the abutment portion, making the processing of the abutment portion more convenient.

[0007] In one embodiment, the abutting portion includes a first end and a second end opposite to each other, and two side edges extending between the first end and the second end. The first end is connected to the opposite two side edges of the opening one-to-one, and the two side edges and the second end are spaced apart from the edge of the opening. Therefore, the abutting portion is more prone to elastic deformation, and when the connector in its unfolded state is bent to form a first connecting segment, an intermediate connecting segment, and a second connecting segment, the abutting portion can more stably abut against the first connecting segment or the second connecting segment.

[0008] In one embodiment, the abutting portion includes an abutting plate, and the first connecting segment has a plate-like structure. The abutting plate is parallel to and abuts against the first connecting segment, which helps to increase the contact area between the abutting portion and the first connecting segment, thereby improving the flow capacity between the intermediate connecting segment and the first connecting segment; and / or, The abutting part includes an abutting plate, and the second connecting section is a plate-shaped structure. The abutting plate is parallel to the second connecting section and abuts against each other, which helps to increase the contact area between the abutting part and the second connecting section, thereby improving the flow capacity between the intermediate connecting section and the second connecting section.

[0009] In one embodiment, the abutting portion includes a first end and a second end opposite to each other, and two side edges extending between the first end and the second end. The first end and the second end are connected one-to-one with the opposite two side edges of the opening, and the two side edges are spaced apart from the edge of the opening. This increases the strength of the abutting portion, so that when the connector in its unfolded state is bent to form a first connecting segment, an intermediate connecting segment, and a second connecting segment, the abutting force between the abutting portion and the first or second connecting segment is greater. This helps to increase the contact area between the abutting portion and the first or second connecting segment, thereby improving the flow capacity between the intermediate connecting segment and the first or second connecting segment.

[0010] In one embodiment, at least a portion of the surface of the abutting portion along its protruding direction is a convex curved surface. Thus, when the convex curved surface of the abutting portion abuts against the first connecting segment or the second connecting segment and is compressed by the first connecting segment or the second connecting segment, a portion of the convex curved surface of the abutting portion can be deformed into a plane, thereby further increasing the contact area between the abutting portion and the first connecting segment or the second connecting segment.

[0011] In one embodiment, the abutting portion extends along a second direction, and in a third direction, the ratio of the total width of the abutting portion to the width of the intermediate connecting segment is less than or equal to 2 / 3, and the first direction, the second direction, and the third direction form an angle with each other. This prevents the total width of the abutting portion from being too wide and affecting the strength of the intermediate connecting segment.

[0012] In one embodiment, in the first direction, the minimum thickness of the abutment portion is less than or equal to the thickness of the intermediate connecting segment. Therefore, the abutment portion can be formed by stamping, making the process very convenient.

[0013] In one embodiment, the area where the first connecting segment abuts the abutting portion is located between the two ends of the first connecting segment, so that in addition to one end of the first connecting segment being electrically connected to the conductive structure, the area of ​​the first connecting segment between the two segments is also electrically connected to the conductive structure through the abutting portion, thereby increasing the current-carrying area between the first connecting segment and the conductive structure, and thus improving the current-carrying capacity of the connector; and / or, The area where the second connecting segment abuts the abutting part is located between the two ends of the second connecting segment, so that in addition to one end of the second connecting segment being electrically connected to the conductive structure, the area of ​​the second connecting segment between the two segments is also electrically connected to the conductive structure through the abutting part, thereby increasing the current-carrying area between the second connecting segment and the conductive structure, and thus improving the current-carrying capacity of the connector.

[0014] Secondly, embodiments of this application provide a battery pack including a battery, the battery comprising: The outer casing includes a housing and a cover plate disposed along a first direction, wherein the housing and the cover plate enclose a cavity, and the cover plate has mounting holes. The pole is installed in the mounting hole; A core package is disposed within the cavity, and an electrode tab is provided on the side of the core package near the cover plate; A connector is disposed within the cavity. The connector includes a first connecting segment and a second connecting segment that are spaced apart from each other along the first direction. The first connecting segment is connected to the pole post, and the second connecting segment is connected to the pole tab. The connector also includes a conductive structure, with one end of the first connecting segment and one end of the second connecting segment respectively connected to the conductive structure. The conductive structure further includes an abutting portion located between the first connecting segment and the second connecting segment, the abutting portion abutting against the first connecting segment and / or the second connecting segment.

[0015] The beneficial effects of the embodiments of this application are as follows: The battery provided in this application embodiment connects the electrode post installed on the cover plate to the first connecting segment of the connector, connects the tab of the core pack installed in the cavity of the outer shell to the second connecting segment of the connector, and connects one end of the first connecting segment and one end of the second connecting segment to the conductive structure, thereby making the tab, the second connecting segment, the conductive structure, the first connecting segment and the electrode post electrically connected in sequence.

[0016] Based on this, by arranging the first connecting segment and the second connecting segment of the connector at a relative interval along the first direction, and by having the conductive structure abut against the first connecting segment and / or the second connecting segment through the abutting part located between the first connecting segment and the second connecting segment, the connection area between the conductive structure and the first connecting segment and / or the second connecting segment can be increased, thereby improving the current-carrying capacity between the conductive structure and the first connecting segment and / or the second connecting segment. This increases the current-carrying capacity of the connector without requiring additional thickness to be added to the connector. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of the battery pack provided in this application. Figure 2 A schematic diagram of one embodiment of the cover plate, pole post, and connector provided in this application, wherein the connector is in an unfolded state; Figure 3 A schematic diagram of one embodiment of the cover plate, pole post, and connector provided in this application, wherein the connector is in a bent state; Figure 4 for Figure 3 A cross-sectional view along the AA direction; Figure 5 This is a schematic diagram of the structure of the first embodiment of the connector provided in this application, wherein the connector is in a bent state; Figure 6 for Figure 5 A cross-sectional view along the BB direction; Figure 7This is a schematic diagram of the structure of a first embodiment of the connector provided in this application, wherein the connector is in an unfolded state; Figure 8 This is a schematic diagram of a second embodiment of the connector provided in this application, wherein the connector is in a bent state; Figure 9 for Figure 8 A cross-sectional view along the CC direction; Figure 10 This is a schematic diagram of a second embodiment of the connector provided in this application, wherein the connector is in an unfolded state; Figure 11 A schematic diagram of the third embodiment of the connector provided in this application, wherein the connector is in a bent state; Figure 12 for Figure 11 A cross-sectional view along the DD direction; Figure 13 A schematic diagram of the structure of a third embodiment of the connector provided in this application, wherein the connector is in an unfolded state; Figure 14 This is a schematic diagram of the fourth embodiment of the connector provided in this application, wherein the connector is in an unfolded state.

[0019] Explanation of reference numerals in the attached figures: 1-Battery pack; 2-Battery module; 3-Box; 20-Battery; 200-Cavity; 21-Outer shell; 211-Cover plate; 2111-Mounting hole; 2112-Injection hole; 2113-Pressure relief hole; 22-Connector; 221-First connecting section; 222-Second connecting section; 2221-Welding area; 223-Conductive structure; 2231-Intermediate connecting section; 2232-Opening; 2233-Abutting part; 2234-Abutting plate; 2235-First end; 2236-Second end; 2237-Side; 2238-Voiding area; 224-Lower insulating part; 2241-Supporting part; 225-Terminal post; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0021] This application provides a battery and a battery pack.

[0022] Figure 1 This is a schematic diagram of the structure of one embodiment of the battery pack provided in this application. Figure 1 As shown, the battery pack 1 includes a housing 3 and a battery module 2, with the battery module 2 housed within the housing 3. The battery module 2 includes multiple batteries 20.

[0023] like Figure 2 and Figure 3 As shown, the battery 20 includes a casing 21, terminals 225, a core pack (not shown), and a connector 22. The casing 21 includes a housing (not shown) and a cover plate 211 arranged along a first direction X. The housing and the cover plate 211 enclose a cavity 200, and the cover plate 211 has mounting holes 2111. The terminals 225 are installed in the mounting holes 2111. The core pack is disposed within the cavity 200, and a tab is provided on the side of the core pack near the cover plate 211. The connector 22 is disposed within the cavity 200, and the terminals 225 are connected to the tabs on the side of the core pack near the cover plate 211 through the connector 22.

[0024] Among them, such as Figures 4 to 6 As shown, the connector 22 may include a first connecting segment 221 and a second connecting segment 222 that are spaced apart from each other along the first direction X. The first connecting segment 221 is connected to the pole post 225, and the second connecting segment 222 is connected to the tab. The connector 22 also includes a conductive structure 223. One end of the first connecting segment 221 and one end of the second connecting segment 222 are respectively connected to the conductive structure 223, thereby making the tab, the second connecting segment 222, the conductive structure 223, the first connecting segment 221 and the pole post 225 electrically connected in sequence.

[0025] It should be noted that the ends of the first connecting segment 221 and the second connecting segment 222 that are connected to the conductive structure 223 can be either the ends of the first connecting segment 221 and the second connecting segment 222 in the same direction, or the ends in opposite directions. For example Figure 6As shown, the right end of the first connecting segment 221 and the left end of the second connecting segment 222 can be connected to the conductive structure 223, so that the ends of the first connecting segment 221 and the second connecting segment 222 connected to the conductive structure 223 are in the same direction as the first connecting segment 221 and the second connecting segment 222, and the conductive structure 223 extends from the right end of the first connecting segment 221 to the left end of the second connecting segment. Alternatively, the left end of the first connecting segment 221 and the left end of the second connecting segment 222 can be connected to the conductive structure 223, so that the ends of the first connecting segment 221 and the second connecting segment 222 connected to the conductive structure 223 are in opposite directions as the first connecting segment 221 and the second connecting segment 222.

[0026] In some embodiments, such as Figures 4 to 6 As shown, the conductive structure 223 also includes an abutment portion 2233 located between the first connecting segment 221 and the second connecting segment 222. The abutment portion 2233 abuts against the first connecting segment 221 and / or the second connecting segment 222, thereby connecting the conductive structure 223 to the first connecting segment 221 and / or the second connecting segment 222 through the abutment portion 2233, thereby increasing the current-carrying capacity between the conductive structure 223 and the first connecting segment 221 and / or the second connecting segment 222, and thus increasing the current-carrying capacity of the connector 22.

[0027] The battery 20 provided in this application embodiment connects the terminal post 225 installed on the cover plate 211 to the first connecting section 221 of the connector 22, connects the tab of the core pack installed in the cavity 200 of the outer shell 21 to the second connecting section 222 of the connector 22, and connects one end of the first connecting section 221 and one end of the second connecting section 222 to the conductive structure 223, thereby making the tab, the second connecting section 222, the conductive structure 223, the first connecting section 221 and the terminal post 225 electrically connected in sequence.

[0028] Based on this, by arranging the first connecting segment 221 and the second connecting segment 222 of the connector 22 at relative intervals along the first direction X, and by having the conductive structure 223 abut against the first connecting segment 221 and / or the second connecting segment 222 through the abutting portion 2233 located between the first connecting segment 221 and the second connecting segment 222, the connection area between the conductive structure 223 and the first connecting segment 221 and / or the second connecting segment 222 can be increased, thereby increasing the current-carrying capacity between the conductive structure 223 and the first connecting segment 221 and / or the second connecting segment 222. This increases the current-carrying capacity of the connector 22 without requiring additional increase in the thickness of the connector 22.

[0029] It should be noted that, as Figure 6 and Figure 7As shown, the conductive structure 223 can include two abutting portions 2233, one abutting portion 2233 abutting against the first connecting segment 221, and the other abutting portion 2233 abutting against the second connecting segment 222. Alternatively, as... Figures 8 to 10 As shown, the conductive structure 223 may also include one or more abutment portions 2233, all of which abut against the second connecting segment 222. Alternatively, the conductive structure 223 may include one or more abutment portions 2233, all of which abut against the first connecting segment 221. Of course, when the conductive structure 223 includes two or more abutment portions 2233, with a portion abutting against the first connecting segment 221 and another portion abutting against the second connecting segment 222, a larger current-passing area can be achieved between the first connecting segment 221 and the conductive structure 223, as well as between the conductive structure 223 and the second connecting segment 222, thereby further improving the current-passing capacity of the connector 22.

[0030] In one embodiment, the area where the first connecting segment 221 abuts the abutting portion 2233 can be located between the two ends of the first connecting segment 221, so that in addition to one end of the first connecting segment 221 being electrically connected to the conductive structure 223, the area between the two ends of the first connecting segment 221 is also electrically connected to the conductive structure 223 through the abutting portion 2233, thereby increasing the current-carrying area between the first connecting segment 221 and the conductive structure 223, and thus improving the current-carrying capacity of the connector 22.

[0031] Similarly, the area where the second connecting segment 222 abuts the abutting portion 2233 can be located between the two ends of the second connecting segment 222, so that in addition to one end of the second connecting segment 222 being electrically connected to the conductive structure 223, the area between the two ends of the second connecting segment 222 is also electrically connected to the conductive structure 223 through the abutting portion 2233, thereby increasing the current-passing area between the second connecting segment 222 and the conductive structure 223, and thus improving the current-passing capacity of the connector 22.

[0032] In some embodiments, such as Figure 6 As shown, the conductive structure 223 can include an intermediate connecting segment 2231 located between the first connecting segment 221 and the second connecting segment 222. One end of the first connecting segment 221 is connected to one end of the intermediate connecting segment 2231 along the second direction Y, and one end of the second connecting segment 222 is connected to the other end of the intermediate connecting segment 2231 along the second direction Y. The first direction X and the second direction Y are set at an angle. Thus, as Figure 7As shown, the connector 22 in its unfolded state can be bent to form the first connecting segment 221, the second connecting segment 222, and the intermediate connecting segment 2231, making the processing of the connector 22 very convenient. Moreover, before bending the connector 22 in its unfolded state, the connector 22 is relatively long, which makes it easier to weld the connector 22 to the pole post 225 and the pole lug.

[0033] Specifically, an abutting portion 2233 can be provided on the side of the intermediate connecting section 2231 facing the first connecting section 221 to abut against the first connecting section 221. This allows the intermediate connecting section 2231 to be electrically connected to one end of the first connecting section 221 along the second direction Y, and the intermediate connecting section 2231 to be electrically connected to the first connecting section 221 through the abutting portion 2233. This helps to increase the flow area between the intermediate connecting section 2231 and the first connecting section 221, thereby improving the flow capacity of the connector 22.

[0034] Continue to refer to Figure 6 An abutting portion 2233 can be provided on the side of the intermediate connecting section 2231 facing the second connecting section 222 to abut against the second connecting section 222. This allows the intermediate connecting section 2231 to be electrically connected to one end of the second connecting section 222 along the second direction Y, and the intermediate connecting section 2231 to be electrically connected to the second connecting section 222 through the abutting portion 2233. This helps to increase the flow area between the intermediate connecting section 2231 and the second connecting section 222, thereby improving the flow capacity of the connector 22.

[0035] It should be noted that the intermediate connecting section 2231 can have the abutment portion 2233 protruding on both the side facing the first connecting section 221 and the side facing the second connecting section 222, or the intermediate connecting section 2231 can have the abutment portion 2233 protruding only on the side facing the first connecting section 221 or the side facing the second connecting section 222. Of course, the former allows for a larger flow area between the intermediate connecting section 2231 and both the first connecting section 221 and the second connecting section 222, resulting in a higher flow capacity for the connector 22.

[0036] In one embodiment, such as Figure 6 and Figure 7 As shown, an opening 2232 is formed in the intermediate connecting section 2231 at the position corresponding to the abutment portion 2233, and at least one end of the abutment portion 2233 is connected to the edge of the opening 2232. Therefore, the opening 2232 and the abutment portion 2233 can be formed by stamping the intermediate connecting section 2231, which makes the processing of the abutment portion 2233 more convenient.

[0037] In one embodiment, in the first direction X, the minimum thickness of the abutment portion 2233 can be less than or equal to the thickness of the intermediate connecting section 2231. Therefore, the abutment portion 2233 can be formed by stamping, making the process very convenient.

[0038] Continue to refer to Figure 6 and Figure 7 The abutment portion 2233 includes a first end 2235 and a second end 2236 opposite to each other, and two side edges 2237 extending between the first end 2235 and the second end 2236. The first end 2235 is connected to the edge of the opening 2232, and the two side edges 2237 and the second end 2236 are spaced apart from the edge of the opening 2232. As a result, the abutment portion 2233 can more easily generate elastic deformation at the first end 2235. When the connector 22 in the unfolded state is bent to form the first connecting segment 221, the intermediate connecting segment 2231 and the second connecting segment 222, the abutment portion 2233 can adaptively deform at the first end 2235, thereby making the abutment portion 2233 more stable in contact with the first connecting segment 221 or the second connecting segment 222.

[0039] In one embodiment, the abutment portion 2233 may include an abutment plate 2234, and the first connecting segment 221 may have a plate-like structure. The abutment plate 2234 is parallel to and abuts against the first connecting segment 221. This is beneficial for increasing the contact area between the abutment portion 2233 and the first connecting segment 221, thereby improving the flow capacity between the intermediate connecting segment 2231 and the first connecting segment 221.

[0040] When the intermediate connecting section 2231 has a protruding abutment portion 2233 on the side facing the first connecting section 221, the height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate can be greater than or equal to 1 and less than or equal to 3 compared with the distance between the first connecting section 221 and the intermediate connecting section 2231 of the connector 22 in the bent state, so that the abutment plate 2234 and the first connecting section 221 have a larger contact area.

[0041] When the intermediate connecting section 2231 has a protruding abutment portion 2233 on the side facing the first connecting section 221, the ratio of the height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate to the distance between the first connecting section 221 and the intermediate connecting section 2231 of the connector 22 in the bent state can be 1.2, 1.5, 1.8, 2, 2.1, 2.3, 2.5, 2.7, 2.9, etc., and no restriction is imposed here.

[0042] Similarly, the abutment portion 2233 can include an abutment plate 2234, and the second connecting section 222 can be a plate-like structure, with the abutment plate 2234 parallel to and abutting against the second connecting section 222. This helps to increase the contact area between the abutment portion 2233 and the second connecting section 222, thereby improving the flow capacity between the intermediate connecting section 2231 and the second connecting section 222.

[0043] When the intermediate connecting section 2231 has a protruding abutment portion 2233 on the side facing the second connecting section 222, the height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate can be greater than or equal to 1 and less than or equal to 3 with the ratio of the distance between the second connecting section 222 and the intermediate connecting section 2231 of the connector 22 in the bent state, so that the abutment plate 2234 and the second connecting section 222 have a larger contact area.

[0044] When the intermediate connecting section 2231 has a protruding abutment portion 2233 on the side facing the second connecting section 222, the ratio of the height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate to the distance between the second connecting section 222 and the intermediate connecting section 2231 of the connector 22 in the bent state can be 1.2, 1.5, 1.8, 2, 2.1, 2.3, 2.5, 2.7, 2.9, etc., and no restriction is imposed here.

[0045] It should be noted that one or more abutment portions 2233 may be provided on one side of the intermediate connecting segment 2231, and the abutment plate 2234 of the abutment portion 2233 may be parallel to and abut against the first connecting segment 221 or the second connecting segment 222. Alternatively, abutment portions 2233 may be provided on both sides of the intermediate connecting segment 2231, and the abutment portion 2233 on the side of the intermediate connecting segment 2231 facing the first connecting segment 221 may be parallel to and abut against the first connecting segment 221, and the abutment portion 2233 on the side of the intermediate connecting segment 2231 facing the second connecting segment 222 may be parallel to and abut against the second connecting segment 222.

[0046] In other embodiments, such as Figures 11 to 13 As shown, the abutment portion 2233 includes a first end 2235 and a second end 2236 opposite to each other, and two side edges 2237 extending between the first end 2235 and the second end 2236. The first end 2235 and the second end 2236 are connected to the opposite two side edges of the opening 2232 one by one, and the two side edges 2237 are spaced apart from the edge of the opening 2232. This increases the strength of the abutment portion 2233, so that when the connector 22 in its unfolded state is bent to form the first connecting segment 221, the intermediate connecting segment 2231, and the second connecting segment 222, the abutment force between the abutment portion 2233 and the first connecting segment 221 or the second connecting segment 222 is greater. This is beneficial for increasing the contact area between the abutment portion 2233 and the first connecting segment 221 or the second connecting segment 222, thereby improving the flow capacity between the intermediate connecting segment 2231 and the first connecting segment 221 or the second connecting segment 222.

[0047] Specifically, at least a portion of the surface of the abutment portion 2233 along its protruding direction can be a convex curved surface. Thus, when the convex curved surface of the abutment portion 2233 abuts against the first connecting segment 221 or the second connecting segment 222 and is compressed by the first connecting segment 221 or the second connecting segment 222, a portion of the convex curved surface of the abutment portion 2233 can be deformed into a plane, thereby further increasing the contact area between the abutment portion 2233 and the first connecting segment 221 or the second connecting segment 222.

[0048] In some embodiments, when the intermediate connecting segment 2231 has a protruding abutment portion 2233 on the side facing the first connecting segment 221, the maximum height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate can be greater than or equal to 1 and less than or equal to 2 compared with the distance between the first connecting segment 221 and the intermediate connecting segment 2231 of the connector 22 in the bent state, so that the abutment plate 2234 and the first connecting segment 221 have a larger contact area.

[0049] When the intermediate connecting section 2231 has a protruding abutment portion 2233 on the side facing the first connecting section 221, the ratio of the maximum height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate to the distance between the first connecting section 221 and the intermediate connecting section 2231 of the connector 22 in the bent state can be 1.2, 1.3, 1.5, 1.7, 1.8, 1.9, etc., and is not limited here.

[0050] When the intermediate connecting section 2231 has a protruding abutment portion 2233 on the side facing the second connecting section 222, the maximum height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate can be greater than or equal to 1 and less than or equal to 2 compared with the distance between the second connecting section 222 and the intermediate connecting section 2231 of the connector 22 in the bent state, so that the abutment plate 2234 and the second connecting section 222 have a larger contact area.

[0051] When the intermediate connecting section 2231 has a protruding abutment portion 2233 on the side facing the second connecting section 222, the ratio of the maximum height of the abutment plate 2234 of the connector 22 in the unfolded state relative to the intermediate connecting plate to the distance between the second connecting section 222 and the intermediate connecting section 2231 of the connector 22 in the bent state can be 1.2, 1.3, 1.5, 1.7, 1.8, 1.9, etc., and is not limited here.

[0052] like Figure 12 and Figure 13 As shown, the intermediate connecting segment 2231 can be provided with a protruding abutment portion 2233 on the side facing the second connecting segment 222, and the surface of the abutment portion 2233 on the side along the protrusion direction is a convex curved surface. Alternatively, as Figure 14As shown, the intermediate connecting segment 2231 can be provided with abutting part 2233 on the side facing the first connecting segment 221, and the intermediate connecting segment 2231 can also be provided with abutting part 2233 on the side facing the second connecting segment 222. The surfaces of the abutting parts 2233 on both sides of the intermediate connecting segment 2231 along their own protrusion direction are all convex curved surfaces.

[0053] In one embodiment, the abutment portion 2233 can extend along the second direction Y, and in the third direction Z, the ratio of the total width of the abutment portion 2233 to the width of the intermediate connecting segment 2231 is less than or equal to 2 / 3, with the first direction X, the second direction Y, and the third direction Z forming an angle with each other. This avoids the abutment portion 2233 from being too wide and affecting the strength of the intermediate connecting segment 2231.

[0054] In some embodiments, such as Figure 2 and Figure 3 As shown, the second connecting section 222 includes a welding area 2221 for welding with the electrode tab. This welding area 2221 protrudes towards the core package. A lower insulating member 224 is provided on the side of the cover plate 211 facing the core, and a support portion 2241 protrudes from this side. The side of the welding area 2221 facing away from the core can abut against the support portion 2241 to stabilize the position of the welding area 2221 relative to the cover plate 211.

[0055] In addition, such as Figure 3 As shown, the cover plate 211 has an injection hole 2112, which is used to inject electrolyte into the cavity 200. The injection hole 2112 and the orthographic projection of the connector 22 in the first direction X are not completely overlapped, so that the electrolyte can be smoothly injected into the cavity 200 through the injection hole 2112.

[0056] The cover plate 211 is also provided with a pressure relief hole 2113, which can form a clearance area 2238 at the position of the connecting piece 22 corresponding to the pressure relief hole 2113. The clearance area 2238 overlaps with the orthogonal projection of the pressure relief hole 2113 in the first direction X, so that the pressure relief hole 2113 can release pressure stably.

[0057] This application also provides a battery pack, which includes a battery. The specific structure of the battery is as described in the above embodiments. Since this battery pack adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0058] The battery pack 1 may include a housing 3 and a battery module 2, with the battery module 2 housed within the housing 3. The battery module 2 includes multiple batteries 20, the structure of which can be referred to in the above embodiments and is not limited herein.

[0059] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery, characterized in that, include: The outer casing includes a housing and a cover plate disposed along a first direction, wherein the housing and the cover plate enclose a cavity, and the cover plate has mounting holes. The pole is installed in the mounting hole; A core package is disposed within the cavity, and an electrode tab is provided on the side of the core package near the cover plate; A connector is disposed within the cavity. The connector includes a first connecting segment and a second connecting segment that are spaced apart from each other along the first direction. The first connecting segment is connected to the pole post, and the second connecting segment is connected to the pole tab. The connector also includes a conductive structure, with one end of the first connecting segment and one end of the second connecting segment respectively connected to the conductive structure. The conductive structure further includes an abutting portion located between the first connecting segment and the second connecting segment, the abutting portion abutting against the first connecting segment and / or the second connecting segment.

2. The battery as described in claim 1, characterized in that, The conductive structure includes an intermediate connecting segment located between the first connecting segment and the second connecting segment. One end of the first connecting segment is connected to one end of the intermediate connecting segment along a second direction, and one end of the second connecting segment is connected to the other end of the intermediate connecting segment along a second direction. The first direction and the second direction are set at an angle. The intermediate connecting segment has an abutting portion protruding from the side facing the first connecting segment, which abuts against the first connecting segment; and / or, The intermediate connecting segment has an abutting portion protruding from the side facing the second connecting segment, which abuts against the second connecting segment.

3. The battery as described in claim 2, characterized in that, The intermediate connecting section has an opening at the position corresponding to the abutment portion, and at least one end of the abutment portion is connected to the edge of the opening.

4. The battery as described in claim 3, characterized in that, The abutting portion includes a first end and a second end opposite to each other, and two side edges extending between the first end and the second end. The first end is connected to the edge of the opening, and the two side edges and the second end are spaced apart from the edge of the opening.

5. The battery as described in claim 4, characterized in that, The abutting portion includes an abutting plate, the first connecting segment is a plate-like structure, and the abutting plate is parallel to and abuts against the first connecting segment; and / or, The abutting part includes an abutting plate, and the second connecting section is a plate-shaped structure. The abutting plate is parallel to the second connecting section and abuts against each other.

6. The battery as described in claim 3, characterized in that, The abutting portion includes a first end and a second end opposite to each other, and two side edges extending between the first end and the second end. The first end and the second end are connected one-to-one with the opposite two side edges of the opening, and the two side edges are spaced apart from the edge of the opening.

7. The battery as described in claim 6, characterized in that, At least a portion of the surface of the abutting portion along its protruding direction is a convex curved surface.

8. The battery as described in claim 2, characterized in that, The abutting portion extends along the second direction. In the third direction, the ratio of the total width of the abutting portion to the width of the intermediate connecting segment is less than or equal to 2 / 3. The first direction, the second direction, and the third direction form an angle with each other.

9. The battery as described in claim 2, characterized in that, In the first direction, the minimum thickness of the abutment portion is less than or equal to the thickness of the intermediate connecting segment.

10. The battery according to any one of claims 1 to 9, characterized in that, The area where the first connecting segment abuts the abutting portion is located between the two ends of the first connecting segment; and / or, The area where the second connecting segment abuts the abutting part is located between the two ends of the second connecting segment.

11. A battery pack, characterized in that, Includes the battery as described in any one of claims 1 to 10.

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