Battery assembly and battery

Abstract

The utility model provides a battery assembly and a battery. The battery assembly comprises a battery cell, the tab comprises a connecting section and a bending section which are connected with each other, and the connecting section is connected with the battery cell; the switching piece is provided with a mounting channel extending in the first direction to form a sandwich structure, at least one part of the bent section of the tab on the battery cell extends into the mounting channel, and at least one side of the tab is connected with the switching piece in the height direction of the battery cell. According to the battery assembly and the battery provided by the utility model, the problem of low mounting efficiency of the tabs and the adapter sheets in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery assembly and a battery. Background Art

[0002] At present, the pole tabs of battery cells are usually connected to the top cover poles using adapters. The connection method between the pole tabs and the adapters includes passing the pole tabs through the adapters, bending the pole tabs, and then fixing the pole tabs and the adapters by welding.

[0003] Regarding the above-mentioned connection method between the pole ear and the adapter plate, since the material of the pole ear is usually a metal structure, generally copper and aluminum, and the metal has a certain toughness, it is difficult for the pole ear to maintain a stable state after being bent, and there will be a certain degree of springback. This results in the need for additional steps to maintain the bending effect of the pole ear during the welding process of the pole ear and the adapter plate, affecting the installation efficiency of the pole ear and the connecting plate. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery and a battery assembly to solve the problem of low installation efficiency of the tabs and the adapter in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a battery assembly is provided, including a battery cell; a pole ear, the pole ear includes a connecting section and a bending section connected to each other, and the connecting section is connected to the battery cell; a adapter plate, the adapter plate has an installation channel extending along a first direction to form a sandwich structure, at least a part of the bending section of the pole ear on the battery cell extends into the interior of the installation channel, and at least one side of the pole ear along the height direction of the battery cell is connected to the adapter plate.

[0006] Furthermore, it comprises a plurality of battery cells stacked along a first direction, and the bent sections of the pole ears on two adjacent battery cells extend in directions facing each other and extend to the inside of a same installation channel.

[0007] Further, along a second direction perpendicular to the first direction, at least one side of the adapter sheet has a via structure communicating with the mounting channel.

[0008] Furthermore, the adapter sheet at the via structure is chamfered, and the via structure is formed into a flared structure along the second direction.

[0009] Furthermore, chamfers are provided at two openings of the mounting channel along the first direction, and the two openings of the mounting channel are formed into a flared structure along directions away from each other.

[0010] Furthermore, along the height direction of the battery core, a connection hole is provided on the surface of the adapter sheet on the side away from the battery core, and the connection hole is communicated with the installation channel.

[0011] Furthermore, the battery assembly also includes an insulating gasket, which is located between the adapter and the battery cell along the height direction of the battery cell.

[0012] Furthermore, the battery assembly also includes a top cover, which is located on a side of the adapter away from the battery cell.

[0013] Furthermore, the adapter sheet has a protrusion extending toward a side away from the battery core, and the protrusion is electrically connected to the pole.

[0014] According to another aspect of the present invention, a battery is provided, the battery comprising the above-mentioned battery assembly.

[0015] Applying the technical solution of the utility model, the battery assembly includes a battery cell and a pole ear, the first end of the pole ear is arranged on the battery cell, and the second end of the pole ear is bent; a adapter plate has a mounting channel extending along a first direction to form a sandwich structure, the second ends of the pole ears on two adjacent battery cells are bent in directions facing each other, and at least a portion extends into the interior of the same mounting channel, and at least one side of the pole ear along the height direction of the battery cell is connected to the adapter plate and conducts electricity.

[0016] From the above, it can be seen that the battery assembly of the present application forms a sandwich structure for placing the pole ear by setting an installation channel in the middle of the adapter plate to maintain the pole ear in a bent state, facilitate welding of the pole ear and the adapter plate, and help improve the stability of the connection between the pole ear and the adapter plate.

[0017] The pole lug and adapter plate of the present application are fixedly connected by sandwich welding, which is conducive to simplifying the pole lug assembly process and avoiding the difficulty in pole lug assembly caused by the need to pass the pole lug through the adapter plate and then bend it in the prior art. The structure of the pole lug and adapter plate of the present application improves the battery assembly efficiency.

[0018] During the process of inserting the tab into the installation channel, the setting of the flared structure enables the tab to first touch the chamfered structure and slide into the installation channel along the chamfered structure, thereby facilitating the insertion of the tab into the installation channel and improving the installation efficiency of the tab. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the overall structure of the battery provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of the connection between the adapter and the tab provided by the utility model;

[0022] Figure 3 This is a schematic diagram of a three-dimensional structure of the adapter provided by the utility model;

[0023] Figure 4 Another three-dimensional structural schematic diagram of the adapter provided by the utility model;

[0024] Figure 5 A side view of the adapter provided by the utility model;

[0025] Figure 6 This is a schematic diagram of the structure in which a connecting hole is arranged on the adapter provided by the utility model.

[0026] The above drawings include the following reference numerals:

[0027] 1. Battery cell; 2. Ear; 21. Connecting section; 22. Bending section; 3. Adapter; 31. Mounting channel; 32. Via structure; 33. Chamfer; 34. Fillet; 35. Connecting hole; 36. Protrusion; 4. Gasket; 5. Top cover; 6. Post. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0031] In order to reduce the additional process of keeping the pole lug bent during the installation of the pole lug and the adapter plate, the utility model provides an installation channel 31 in the middle of the adapter plate 3 to form a sandwich structure for placing the pole lug 2, so as to keep the pole lug 2 in a bent state, facilitate welding of the pole lug 2 and the adapter plate 3, and improve efficiency.

[0032] A battery assembly, see Figures 1 to 6The battery assembly includes a battery cell 1, a pole lug 2 and a transfer sheet 3, the battery cell 1 is provided with at least one, the pole lug 2 includes a connecting section 21 and a bending section 22 connected, the connecting section 21 is connected to the battery cell 1, and the transfer sheet 3 has a mounting channel 31 extending along a first direction to form a sandwich structure, at least a portion of the bending section of the pole lug 2 on the battery cell 1 extends into the interior of the mounting channel 31, and at least one side of the pole lug 2 along the height direction of the battery cell 1 is connected to the transfer sheet 3.

[0033] in, Figure 1 The X direction is the second direction, Figure 1 The Y direction is the first direction, and the Z direction is the height direction of the battery cell.

[0034] Before installation, the pole lug 2 is in an unbent state; during installation, the pole lug 2 on the battery cell 1 is first inserted into the installation channel 31, and then the adapter 3 is fixed, and the pole lug 2 is bent by moving the battery cell 1. After the bending is completed, the pole lug 2 is fixedly connected to the adapter 3 to complete the installation of the pole lug 2 and the adapter 3.

[0035] Furthermore, the pole tab 2 and the adapter plate 3 are fixed by welding. In the present embodiment, the pole tab 2 and the adapter plate 3 can be fixedly connected by sandwich welding. The welding fixation method can simplify the assembly process of the pole tab 2 and improve the efficiency of battery production.

[0036] Specifically, the battery assembly of the present application forms a sandwich structure for placing the pole lug by setting an installation channel in the middle of the adapter plate to keep the pole lug in a bent state, facilitate welding of the pole lug and the adapter plate, and help improve the stability of the connection between the pole lug and the adapter plate.

[0037] Furthermore, when multiple battery cells 1 are provided, the multiple battery cells 1 are stacked along a first direction, and the pole ears 2 on two adjacent battery cells 1 are extended into the interior of the same installation channel 31. The installation channel 31 has the technical effect of protecting and fixing the pole ears 2, and also facilitates the fixation between the pole ears 2 and the adapter 3, thereby improving the installation efficiency.

[0038] In this embodiment, the pole ear 2 includes a first pole ear and a second pole ear, and the first pole ear and the second pole ear are provided on two adjacent battery cells 1. The two first pole ears on the two adjacent battery cells 1 are connected and conductive through a converter 3, and the two second pole ears on the two adjacent battery cells 1 are connected and conductive through another converter 3.

[0039] See also Figure 2 , the extension length of the bending section 22 in the pole ear 2 is not less than the extension length of the connecting section 21.

[0040] Specifically, the extension length of the bending section 22 is not less than the extension length of the connecting section 21. A longer bending section 22 is used to increase the contact area between the tab 2 and the adapter 3, thereby improving the stability of the connection between the tab 2 and the adapter 3, thereby ensuring good conductivity.

[0041] It can be understood that during the installation process of the pole ear 2 and the adapter plate 3, the pole ear 2 needs to be bent, and the bent part forms a bending section 22, and the unbent part is a connecting section 21. The connecting section 21 and the bending section 22 both play a connecting role, so as to be used to connect the battery cell 1 and the adapter plate 3 respectively.

[0042] Furthermore, the adapter plate 3 at the two openings of the installation channel 31 along the first direction is provided with chamfers 33, and the two openings of the installation channel 31 are formed into a flared structure in a direction away from each other. The setting of the flared structure is conducive to providing a guide for the installation of the tab 2, so as to facilitate the bending section 22 of the tab 2 to extend into the interior of the installation channel 31, thereby improving the assembly efficiency of the battery.

[0043] It should be noted that by setting the chamfer 33, during the process of inserting the pole lug 2 into the installation channel 31, the pole lug 2 can first touch the chamfer 33 structure and slide into the installation channel 31 along the chamfer 33 structure. By increasing the via structure 32 and the expansion of the edge of the installation channel 31, the pole lug 2 can be easily inserted into the installation channel 31, thereby improving the installation efficiency of the pole lug 2.

[0044] In this embodiment, a chamfer 34 is provided on the peripheral edge of the adapter plate 3 along the circumference of the adapter plate 3. The rounded corner 34 can reduce material stress and concentration, reduce wear and damage, and increase aesthetics. At the same time, the rounded corner 34 structure can increase the installation safety during installation and reduce damage to the staff.

[0045] In a specific implementation of this embodiment, the adapter plate 3 is a plate-shaped structure with a rectangular cross section, and rounded corners 34 are formed at the four corners of the adapter plate 3 .

[0046] See also Figure 6 Along the height direction of the battery core 1 , a connection hole 35 is opened on the surface of the adapter plate 3 on the side away from the battery core 1 , and the connection hole 35 is connected to the installation channel 31 .

[0047] Specifically, when the adapter plate 3 and the pole lug 2 need to be welded, the tooling is inserted into the connecting hole 35 to press the pole lug 2 through the tooling to prevent the pole lug 2 from shifting, thereby facilitating the close contact between the pole lug 2 and the lower layer adapter plate 3, facilitating welding, and helping to increase the firmness of the connection between the pole lug 2 and the adapter plate 3.

[0048] There may be a plurality of connection holes 35 , and the plurality of connection holes 35 are arranged at intervals on the adapter plate 3 .

[0049] Furthermore, the battery assembly further includes an insulating gasket 4 , and along the height direction of the battery cell 1 , the insulating gasket 4 is located between the adapter 3 and the battery cell 1 .

[0050] During the installation of the adapter 3, an insulating sheet is provided between the adapter 3 and the battery cell 1 to avoid short circuits caused by direct contact between the adapter 3 and the battery cell 1, thereby increasing the safety of the battery during installation and use.

[0051] In this embodiment, the battery assembly further includes a top cover 5 and a pole 6 . The top cover 5 is located on a side of the adapter plate 3 away from the battery cell 1 . The pole 6 is disposed on the top cover 5 , and the pole 6 is electrically connected to the adapter plate 3 .

[0052] Furthermore, the adapter sheet 3 has a protrusion 36 extending toward a side away from the battery core 1 , and the protrusion 36 is electrically connected to the pole 6 .

[0053] Furthermore, the pole lug 2 includes a first pole lug and a second pole lug spaced apart along the second direction, a transfer plate 3 is arranged between the first pole lugs of two adjacent battery cells 1, another transfer plate 3 is arranged between the second pole lugs of two adjacent battery cells 1, and a protrusion 36 is arranged on the ends of the two transfer plates 3 away from each other.

[0054] Embodiment 2

[0055] See also Figures 4 to 6 In this embodiment, along a second direction perpendicular to the first direction, one side of the adapter plate 3 has a via structure 32 connected to the mounting channel 31 .

[0056] Among them, the installation channel 31 along the second direction is connected to the outside through the via structure 32. During the installation of the adapter 3, the pole ear 2 can enter the interior of the installation channel 31 through the via structure 32, which facilitates the installation and coordination of the pole ear 2 and the adapter 3 and improves the installation efficiency of the adapter 3 and the pole ear 2.

[0057] It should be noted that, along the circumference of the adapter plate 3 , the via structure 32 is connected to the opening of the installation channel 31 , so that the tab 2 can be moved from the via structure 32 to the inside of the installation channel 31 during installation.

[0058] In this embodiment, a chamfer 33 is provided at the via structure 32, and the via structure 32 is formed into a flared structure along the second direction. The flared structure is provided to facilitate the installation of the tab 2 toward the inside of the installation channel 31, and the flared structure provides a guide for the installation of the tab 2, which is conducive to improving the installation efficiency of the tab 2.

[0059] Embodiment 3

[0060] This embodiment provides a battery, including the battery assembly in the first or second embodiment.

[0061] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0062] 1. The pole lug 2 and the adapter plate 3 are fixedly connected by sandwich welding, which is conducive to simplifying the assembly process of the pole lug 2 and avoiding the difficulty in assembling the pole lug 2 caused by the need to pass the pole lug 2 through the adapter plate 3 and then bend it in the prior art. The structure of the pole lug 2 and the adapter plate of the present application improves the battery assembly efficiency.

[0063] 2. During the process of inserting the tab 2 into the installation channel 31, the setting of the flared structure enables the tab 2 to first touch the chamfer 33 structure and slide into the installation channel 31 along the chamfer 33 structure, thereby facilitating the insertion of the tab 2 into the installation channel 31 and improving the installation efficiency of the tab 2.

[0064] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery assembly, characterized in that: include: Battery cell (1); A pole lug (2), the pole lug (2) comprising a connecting section (21) and a bending section (22) which are connected to each other, the connecting section (21) being connected to the battery cell (1); A transfer plate (3), wherein the transfer plate (3) has a mounting channel (31) extending along a first direction to form a sandwich structure, at least a portion of the bent section of the pole ear (2) on the battery cell (1) extends into the interior of the mounting channel (31), and at least one side of the pole ear (2) is connected to the transfer plate (3) along the height direction of the battery cell (1).

2. The battery assembly according to claim 1, characterized in that: It comprises a plurality of battery cells (1) stacked along the first direction, wherein the bent sections of the pole ears (2) on two adjacent battery cells (1) extend in directions facing each other and extend to the interior of the same installation channel (31).

3. The battery assembly according to claim 1, characterized in that: Along a second direction perpendicular to the first direction, one side of the adapter plate (3) has a via structure (32) communicating with the mounting channel (31).

4. The battery assembly according to claim 3, characterized in that: The adapter plate (3) at the via structure (32) is provided with a chamfer (33), and the via structure (32) is formed as a flared structure along the second direction.

5. The battery assembly according to claim 1, characterized in that: Chamfers (33) are provided at two openings of the installation channel (31) along the first direction, and the two openings of the installation channel (31) are formed into a flared structure in a direction away from each other.

6. The battery assembly according to claim 1, characterized in that: Along the height direction of the battery core (1), a connection hole (35) is provided on the surface of the adapter plate (3) on the side away from the battery core (1), and the connection hole (35) is communicated with the installation channel (31).

7. The battery assembly according to claim 1, characterized in that: The battery assembly further comprises an insulating gasket (4), and along the height direction of the battery cell (1), the insulating gasket (4) is located between the adapter plate (3) and the battery cell (1).

8. The battery assembly according to any one of claims 1 to 7, characterized in that: The battery assembly further comprises: A top cover (5), the top cover (5) being located on a side of the adapter plate (3) away from the battery core (1); A pole (6), wherein the pole (6) is arranged on the top cover (5), and the pole (6) is electrically connected to the adapter plate (3).

9. The battery assembly according to claim 8, characterized in that: The adapter sheet (3) has a protrusion (36) extending toward a side away from the battery core (1), and the protrusion (36) is electrically connected to the pole (6).

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

Images