Battery device

Abstract

The utility model discloses battery equipment. The battery equipment comprises a battery cell body, a battery shell, an electric connecting piece and a pole, a mounting cavity is formed in the battery shell and is used for mounting the battery cell body. And the electric connecting piece is electrically connected with the battery cell body. The pole is arranged on the side face of the electric connecting piece and electrically connected with the electric connecting piece, and a plane part is arranged on the side, away from the electric connecting piece, of the pole and used for making contact with the probe. The plane part is not used for a curved surface structure, and the plane part is used as a flat surface and can be in contact with a formation and capacity grading probe, so that the contact area of the pole and the probe is increased, the contactable over-current area of the pole and the probe is increased, and the charging and discharging efficiency of battery equipment is improved.

Description

Technical Field

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

[0002] With the development of new energy vehicles, the market demand for power batteries is increasing. At the same time, battery capacity is also constantly expanding. To maintain efficient production, the flow capacity of formation and capacity separation needs to be continuously improved.

[0003] In traditional aluminum-shell batteries, the pole is usually cylindrical. However, this cylindrical pole has the problem of limited available contact area for overcurrent. The charging and discharging process of aluminum-shell batteries mainly includes two steps: formation and capacity separation. When overcurrent occurs, the formation and capacity separation probes need to contact the flat surface of the cylindrical pole, but the side of the cylindrical pole is a curved surface, and the probe cannot contact the curved surface of the cylindrical pole, making the curved surface of the cylindrical pole unable to serve as an overcurrent carrier. As a result, the contact area between the cylindrical pole and the probe is small, resulting in a higher overcurrent temperature and reduced charging and discharging efficiency of the battery equipment. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery device, aiming to solve the technical problem that the charging and discharging efficiency of the battery device is low due to the small contact area between the pole and the probe.

[0005] In order to achieve the above-mentioned purpose of the utility model, the first aspect of the utility model provides a battery device.

[0006] A battery device comprising:

[0007] Battery cell body;

[0008] A battery housing, wherein a mounting cavity is provided in the battery housing, and the mounting cavity is used to mount the battery cell body;

[0009] an electrical connector electrically connected to the battery cell body; and

[0010] A pole is provided on a side of the electrical connector and is electrically connected to the electrical connector. A flat surface is provided on a side of the pole facing away from the electrical connector, and the flat surface is used to contact a probe.

[0011] In one embodiment, the planar portion is arranged parallel to the plane where the electrical connector is located.

[0012] In one embodiment, a first arc portion is provided on one side of the pole, and the first arc portion is adjacent to the plane portion at an edge away from the electrical connector; and / or

[0013] A second arc surface portion is provided on the other side of the pole, the second arc surface portion is arranged opposite to the first arc surface, and the edge of the second arc surface portion away from the electrical connector is adjacent to the plane portion.

[0014] In one embodiment, the electrical connector and the pole are an integrally formed structure.

[0015] In one embodiment, along the length direction of the pole, the area of ​​the cross section of the pole gradually decreases from the first end to the second end.

[0016] In one embodiment, the battery device includes an insulating member, a first side surface of the insulating member is disposed on an outer side wall of the housing, and the electrical connector is disposed on a second side surface of the insulating member.

[0017] In one embodiment, a mounting groove is provided on the second side surface of the insulating member, and the mounting groove is used to install the electrical connector.

[0018] In one embodiment, the electrical connector is provided with a first connecting portion protruding from one side of the battery cell body, the battery housing is provided with a first through hole, the insulating member is provided with a second through hole, the first connecting portion is passed through the first through hole and the second through hole and extends into the mounting cavity, and the first connecting portion is electrically connected to the battery cell body; and / or

[0019] The electrical connector is provided with a second connecting portion protruding from one side of the battery cell body, the second connecting portion is arranged opposite to the first connecting portion, the battery shell is provided with a third through hole, the insulating member is provided with a fourth through hole, the second connecting portion is passed through the third through hole and the fourth through hole, and extends into the installation cavity, and the second connecting portion is electrically connected to the battery cell body.

[0020] In one embodiment, the first connecting portion is provided with a liquid injection port, and the liquid injection port is used to allow the electrolyte to flow into the interior of the battery cell body.

[0021] In one embodiment, the second connecting portion is provided with an exhaust port and an explosion-proof valve, the exhaust port is communicated with the installation cavity, and the explosion-proof valve seals the exhaust port.

[0022] Beneficial effects:

[0023] The battery equipment of the utility model, install the cavity in the battery shell. The installation cavity is used for installing the electric core body. The electric connection spare is electrically connected with the electric core body and the pole respectively. That is, the electric core body is electrically connected with the pole. The pole is provided with a plane part on the side away from the electric connection spare. The plane part is used for contacting with the probe. The plane part is not used for the curved surface structure, and the plane part is as the flat surface, can contact with the probe of the formation and the separate capacity, thereby increasing the contact area of the pole and the probe, and further increasing the overcurrent area of the pole and the probe that can contact, improve the efficiency of the battery equipment charging and discharging. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of the battery equipment of an embodiment of the utility model.

[0025] Figure 2 It is the exploded view of the battery equipment of an embodiment of the utility model.

[0026] Figure 3 It is the structure schematic diagram of the electric connection spare and the pole of an embodiment of the utility model.

[0027] Figure 4 It is the overhead view of the electric connection spare and the pole of an embodiment of the utility model.

[0028] Figure 5 It is the structure schematic diagram of the insulating part of an embodiment of the utility model.

[0029] Among them:

[0030] 100, battery shell;110, first through hole;120, third through hole;

[0031] 200, electric connection spare;210, first contact part;220, second contact part;230, first connecting part;231, liquid injection port;240, second connecting part;241, exhaust port;

[0032] 300, pole;310, plane part;320, first arc surface part;330, second arc surface part;340, first end part;350, second end part;

[0033] 400, insulating part;410, installation slot. 420, second through hole;430, fourth through hole.

[0034] The realization of the utility model, functional characteristics and advantages will be further explained with reference to the drawings. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not used to limit the utility model.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] like Figure 1 and Figure 2As shown, in some embodiments, a battery device includes a battery cell, a battery housing 100, an electrical connector 200, and a terminal 300. The battery housing 100 includes a mounting cavity for mounting the battery cell. The electrical connector 200 is electrically connected to the battery cell. The terminal 300 is disposed on a side of the electrical connector 200 and is electrically connected to the electrical connector 200. A flat portion 310 is provided on the side of the terminal 300 facing away from the electrical connector 200. The flat portion 310 is configured to contact a probe.

[0040] It should be noted that the planar portion 310 is not used for a curved surface structure. As a flat surface, the planar portion 310 can contact the formation and capacitance probes, thereby increasing the contact area between the pole 300 and the probes, and further increasing the contact area between the pole 300 and the probes, thereby improving the charging and discharging efficiency of the battery device.

[0041] In some embodiments, the planar portion 310 is arranged parallel to the plane on which the electrical connector 200 is located. This arrangement enables the probe to maintain contact stability when contacting the planar portion 310 of the pole 300 during the formation and capacitance separation process. Due to the parallel relationship between the planes, when the probe contacts the planar portion 310, there will be no poor contact or instability caused by angular deviation when the probe contacts the planar portion 310. This makes the contact between the probe and the pole 300 more reliable, the current transmission more smooth, and the efficiency of the formation and capacitance separation improved.

[0042] Specifically, the electrical connector 200 is a plate-shaped structure.

[0043] like Figure 3 As shown, specifically, the electrical connector 200 is provided with a first contact portion 210 . The first contact portion 210 is used to contact a probe for formation and separation. The first contact portion 210 is provided parallel to the planar portion 310 .

[0044] Specifically, the electrical connector 200 is further provided with a second contact portion 220. The second contact portion 220 is used to contact a formation and capacitance probe. The second contact portion 220 is arranged parallel to the planar portion 310. The second contact portion 220 is arranged opposite the first contact portion 210, and the pole 300 is located between the first contact portion 210 and the second contact portion 220.

[0045] It should be noted that the first contact portion 210 and the second contact portion 220 provide contact points for the formation and capacitance division probes, improving the stability and reliability of current transmission and avoiding the poor contact problems that may occur with a single contact point. During the formation and capacitance division process, current needs to be transmitted through the probes, the pole 300, and the electrical connector 200. Multiple contact points can share the current, reducing the current load on a single contact point and lowering the risk of contact resistance and heat generation.

[0046] like Figure 3As shown, in some embodiments, a first curved surface portion 320 is provided on one side of the pole 300. The first curved surface portion 320 is adjacent to the flat surface portion 310 at the edge away from the electrical connector 200. A second curved surface portion 330 is provided on the other side of the pole 300, and the second curved surface portion 330 is arranged opposite the first curved surface. The second curved surface portion 330 is adjacent to the flat surface portion 310 at the edge away from the electrical connector 200. The flat surface portion 310, the first curved surface portion 320, and the second curved surface portion 330 form the side surface of the pole 300. This is equivalent to cutting a plane into the cylindrical pole 300 along its length, thereby forming the flat surface portion 310, the first curved surface portion 320, and the second curved surface portion 330.

[0047] Specifically, the first curved surface portion 320 and the second curved surface portion 330 have the same shape and size.

[0048] In some embodiments, the electrical connector 200 and the terminal 300 are integrally formed. This arrangement eliminates gaps or weak points between the electrical connector 200 and the terminal 300, making the overall structure more robust. For example, during transportation or use, the battery device may be subject to bumps and vibrations. The integrally formed structure ensures that the electrical connector 200 and the terminal 300 do not loosen or break, ensuring the normal operation of the battery device.

[0049] Because the electrical connector 200 and the terminal 300 are an integrated structure, the electrical conductivity between the electrical connector 200 and the terminal 300 is more stable and reliable. This eliminates the problems of poor contact and increased resistance that may occur with traditional connection methods, enabling efficient current transmission and providing a good electrical path for the charging and discharging process of the battery device.

[0050] like Figure 4 As shown, in some embodiments, the cross-sectional area of ​​the pole 300 gradually decreases along its length from the first end 340 to the second end 350. When installing the pole 300, the second end 350, with its smaller cross-sectional area, can be inserted into the mounting base. Compared to poles 300 with a uniform cross-section or other shapes, this gradually decreasing cross-sectional area facilitates insertion into corresponding holes or slots in the mounting base, reducing resistance and difficulty during installation.

[0051] In addition, the gradually decreasing cross-sectional shape can provide a clear directional guide for installation. Operators or automated equipment can easily identify the correct installation direction of the pole 300, avoiding installation failure or subsequent problems caused by incorrect installation direction.

[0052] like Figure 1 and Figure 5As shown, in some embodiments, the battery device includes an insulating member 400. The first side of the insulating member 400 is provided on the outer side wall of the shell. The second side of the insulating member 400 is provided with an electrical connector 200. The insulating member 400 is used to provide electrical insulation between the electrical connector 200 and the battery shell 100 to prevent a short circuit between the electrical connector 200 and the battery shell 100. The battery shell 100 is generally a conductive metal material, and the electrical connector 200 transmits current during operation. The isolation effect of the insulating member 400 prevents the electrical connector 200 from directly contacting the battery shell 100, thereby reducing the risk of current leakage and short circuit, and improving the safety of the battery device.

[0053] Specifically, the insulating member 400 may be a plate-shaped structure.

[0054] like Figure 5 Specifically, the second side surface of the insulating member 400 is provided with a mounting groove 410 for mounting the electrical connector 200. The mounting groove 410 provides a mounting position for the electrical connector 200, ensuring that the electrical connector 200 can be accurately mounted at a specific position on the insulating member 400. This arrangement enables fast and accurate positioning during battery assembly, improving production efficiency and assembly accuracy.

[0055] Specifically, the mounting slot 410 may be a mounting groove.

[0056] Specifically, the mounting groove 410 can match the shape of the electrical connector 200. This increases the contact area and friction between the electrical connector 200 and the insulating member 400, thereby improving the fixing effect of the electrical connector 200. During use of the battery device, the electrical connector 200 may be subjected to external forces such as vibration and impact. The electrical connector 200 in the mounting groove 410 is prevented from loosening or shifting.

[0057] like Figure 2 As shown, in some embodiments, the electrical connector 200 has a first connecting portion 230 protruding from a side facing the battery cell body. The battery housing 100 defines a first through-hole 110. The insulating member 400 defines a second through-hole 420. The first connecting portion 230 passes through the first through-hole 110 and the second through-hole 420 and extends into the mounting cavity, electrically connecting the first connecting portion 230 to the battery cell body.

[0058] Specifically, the first connection portion 230 is provided at one end of the electrical connector 200. The first connection portion 230 is located on a side of the first contact portion 210 away from the pole 300. That is, the first contact portion 210 is located between the first connection portion 230 and the pole 300.

[0059] Specifically, the first connection portion 230 may be cylindrical.

[0060] In some embodiments, the electrical connector 200 has a second connecting portion 240 protruding from a side facing the battery cell body. The second connecting portion 240 is disposed opposite the first connecting portion 230. The battery housing 100 defines a third through hole 120. The insulating member 400 defines a fourth through hole 430. The second connecting portion 240 extends through the third through hole 120 and the fourth through hole 430 and extends into the mounting cavity. The second connecting portion 240 is electrically connected to the battery cell body.

[0061] Specifically, the second connection portion 240 is provided at the other end of the electrical connector 200. The second connection portion 240 is located on a side of the second contact portion 220 away from the pole 300. That is, the second contact portion 220 is located between the second connection portion 240 and the pole 300.

[0062] Specifically, the second connection portion 240 may be cylindrical.

[0063] like Figure 2 As shown, in some embodiments, the first connection portion 230 is provided with a liquid injection port 231. The liquid injection port 231 is used to allow the electrolyte to flow into the interior of the battery cell body.

[0064] In some embodiments, the second connection portion 240 is provided with an exhaust port 241 and an explosion-proof valve. The exhaust port 241 is communicated with the installation cavity, and the explosion-proof valve seals the exhaust port 241 .

[0065] In the battery device, the electrical connector 200 is provided with a second connection portion 240 on one side facing the cell body. In addition to being used to achieve electrical connection with the cell body, the second connection portion 240 is also provided with an exhaust port 241 and an explosion-proof valve.

[0066] When gas is generated in the mounting cavity inside the battery case 100 , the gas may be exhausted from the mounting cavity to the outside through the exhaust port 241 .

[0067] Under normal circumstances, the explosion-proof valve is closed, isolating the battery interior from the external environment and preventing external impurities from entering the battery housing 100 and affecting the performance of the battery device. If an abnormality occurs within the battery cell body within the battery housing 100, such as excessive pressure within the mounting cavity, the explosion-proof valve opens according to a set pressure threshold, and gas is discharged from the exhaust port 241 to reduce the pressure inside the battery, reduce the risk of explosion, and improve the safety of the battery device.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery device, characterized in that: include: Battery cell body; A battery housing, wherein a mounting cavity is provided in the battery housing, and the mounting cavity is used to mount the battery cell body; An electrical connector electrically connected to the battery cell body; and A pole is provided on a side of the electrical connector and is electrically connected to the electrical connector. A flat surface is provided on a side of the pole facing away from the electrical connector, and the flat surface is used to contact a probe.

2. The battery device according to claim 1, characterized in that The plane portion is arranged parallel to the plane where the electrical connector is located.

3. The battery device according to claim 1, characterized in that A first arc portion is provided on one side of the pole, and the first arc portion is adjacent to the plane portion at an edge away from the electrical connector; and / or A second arc surface portion is provided on the other side of the pole, the second arc surface portion is arranged opposite to the first arc surface, and the edge of the second arc surface portion away from the electrical connector is adjacent to the plane portion.

4. The battery device according to claim 1, characterized in that The electrical connector and the pole are integrally formed.

5. The battery device according to claim 1, characterized in that Along the length direction of the pole, the area of ​​the cross section of the pole gradually decreases from the first end to the second end.

6. The battery device according to claim 1, characterized in that The battery device includes an insulating member, a first side surface of the insulating member is arranged on the outer side wall of the shell, and the electrical connector is arranged on a second side surface of the insulating member.

7. The battery device according to claim 6, characterized in that The second side surface of the insulating member is provided with a mounting groove, and the mounting groove is used for mounting the electrical connector.

8. The battery device according to claim 6, characterized in that The electrical connector is provided with a first connecting portion protruding from one side of the battery cell body, the battery housing is provided with a first through hole, the insulating member is provided with a second through hole, the first connecting portion is passed through the first through hole and the second through hole and extends into the mounting cavity, and the first connecting portion is electrically connected to the battery cell body; and / or The electrical connector is provided with a second connecting portion protruding from one side of the battery cell body, the second connecting portion is arranged opposite to the first connecting portion, the battery shell is provided with a third through hole, the insulating member is provided with a fourth through hole, the second connecting portion is passed through the third through hole and the fourth through hole, and extends into the installation cavity, and the second connecting portion is electrically connected to the battery cell body.

9. The battery device according to claim 8, characterized in that The first connecting portion is provided with a liquid injection port, and the liquid injection port is used to allow electrolyte to flow into the interior of the battery cell body.

10. The battery device according to claim 8, characterized in that The second connecting portion is provided with an exhaust port and an explosion-proof valve. The exhaust port is communicated with the installation cavity, and the explosion-proof valve seals the exhaust port.

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