CN219419445U - Battery core pole plug-in structure and battery - Google Patents

Abstract

The utility model provides an electric core pole plug-in structure and a battery, and relates to the technical field of batteries. Compared with the prior art, the utility model realizes the physical connection and the electrical connection with the pole through the elastic connection structure between the elastic crown spring and the pole, realizes the detachable connection of the battery cell, avoids the welding means, improves the integral fault tolerance, simplifies the connection process and is convenient for disassembly and assembly.

Description

Battery core pole plug-in structure and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to an electric core pole plug-in structure and a battery.

Background

In the high-voltage connection design of the power battery system, a bus bar (bus bar) is often used between the battery cells to realize electric connection, wherein the bus bar is usually required to be welded with a battery cell pole, and the connection process has high process requirements and low fault tolerance rate of operation. Moreover, the welded connection structure cannot be disassembled, so that the bus bar and the battery core cannot be disassembled, and negative influence is brought to maintenance or assembly.

Disclosure of Invention

The utility model aims to provide a battery core pole plug-in structure and a battery, which can realize electric connection with a pole through an elastic plug-in structure, realize detachable connection of a battery core, avoid a welding means, improve the integral fault tolerance, simplify the connection process and facilitate disassembly and assembly.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the utility model provides a plug-in structure of a battery core pole, which comprises a battery core and a bus bar, wherein a pole is arranged on the end face of the battery core, the pole is protruded from the end face of the battery core, an elastic crown spring is arranged on one side surface of the bus bar, an elastic slot is formed by surrounding the elastic crown spring, the pole is inserted in the elastic slot in an interference manner, the elastic crown spring is used for being elastically expanded under the plug-in effect of the pole and is elastically abutted against the peripheral face of the pole, and the pole is electrically connected with the bus bar.

In an alternative embodiment, the middle part of the elastic crown spring protrudes inwards and is elastically abutted against the outer peripheral surface of the pole, and the elastic crown spring is in electrical contact with the pole.

In an alternative embodiment, the elastic crown spring comprises a first end ring, a second end ring and an elastic fence, wherein the first end ring is arranged on the surface of the busbar, one end of the elastic fence is connected with the first end ring, the other end of the elastic fence extends towards a direction away from the busbar, the second end ring is connected with one end of the elastic fence away from the busbar, and at least part of the elastic fence protrudes inwards and is elastically abutted against the outer circumferential surface of the pole.

In an optional embodiment, the elastic fence includes a plurality of elastic pieces arranged at intervals, one end of each elastic piece is connected to the first end ring, the other end is connected to the second end ring, and at least part of the elastic pieces are bent inwards to be protruded and elastically propped against the outer circumferential surface of the pole.

In an alternative embodiment, the first end ring and the second end ring are parallel to each other, the elastic sheet is integrally arranged between the first end ring and the second end ring, and the elastic sheet is a phosphor bronze sheet or a beryllium bronze sheet.

In an optional embodiment, an avoidance gap is formed between two adjacent shrapnel, and the widths of the avoidance gaps are the same, so that the shrapnels are uniformly distributed between the first end ring and the second end ring.

In an alternative embodiment, the first end ring and the second end ring are both circular, and the pole is cylindrical and is adapted to the shape of the elastic slot.

In an optional embodiment, the plurality of electric cores are arranged, a plurality of elastic crown springs are arranged on the busbar at intervals, and the plurality of elastic crown springs are correspondingly connected to the plurality of poles on the electric cores, so that the plurality of poles are connected in series into a whole.

In an alternative embodiment, the height of the terminal post relative to the end face of the battery cell is greater than the height of the elastic crown spring relative to the surface of the busbar, so that the terminal post interferes with the busbar when inserted into the elastic slot.

In a second aspect, the present utility model provides a battery, including a case and the battery terminal plug structure according to any one of the foregoing embodiments, where the battery is accommodated in the case.

The beneficial effects of the embodiment of the utility model include:

according to the battery core pole plug-in structure provided by the embodiment of the utility model, the elastic crown spring is arranged on the busbar, the elastic crown spring is surrounded to form the elastic slot, and the pole can be inserted in the elastic slot in an interference manner, so that the elastic crown spring can realize elastic expansion, and the elastic crown spring can be elastically abutted against the outer peripheral surface of the pole, and the electric connection between the pole and the busbar is realized. Compared with the prior art, the utility model realizes the physical connection and the electrical connection with the pole through the elastic connection structure between the elastic crown spring and the pole, realizes the detachable connection of the battery cell, avoids the welding means, improves the integral fault tolerance, simplifies the connection process and is convenient for disassembly and assembly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an electrical core pole plug structure according to an embodiment of the present utility model;

fig. 2 is a schematic partial structure diagram of an electrical core pole plug structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the bus bar in FIG. 1 at a first view angle;

fig. 4 is a schematic structural diagram of the bus bar in fig. 1 under a second view angle.

Icon:

100-an electric core pole plug structure; 110-cell; 111-pole; 130-bus bars; 150-an elastic crown spring; 151-a first end ring; 153-a second end ring; 155-elastic rail; 157-shrapnel; 159-dodging gap.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

First embodiment

Referring to fig. 1 to 4, the present embodiment provides a plug structure 100 for a battery core and a pole, which can realize electrical connection with the pole 111 through an elastic plug structure, so as to realize detachable connection of the battery core 110, avoid welding, improve overall fault tolerance, simplify connection process, and facilitate disassembly and assembly.

The battery core pole plug structure 100 provided in this embodiment includes a battery core 110 and a bus bar 130, a pole 111 is disposed on an end surface of the battery core 110, the pole 111 protrudes from the end surface of the battery core 110, an elastic crown spring 150 is disposed on a side surface of the bus bar 130, an elastic slot is formed around the elastic crown spring 150, the pole 111 is inserted into the elastic slot in an interference manner, the elastic crown spring 150 is used for elastically expanding under the insertion effect of the pole 111 and elastically abutting against the outer peripheral surface of the pole 111, and the pole 111 is electrically connected with the bus bar 130.

It should be noted that, in this embodiment, by disposing the elastic crown spring 150 on the bus bar 130, and surrounding the elastic crown spring 150 to form an elastic slot, the pole 111 can be inserted into the elastic slot in an interference manner, so that the elastic crown spring 150 can realize elastic expansion, and the elastic crown spring 150 can elastically abut against the outer peripheral surface of the pole 111, so as to realize electrical connection between the pole 111 and the bus bar 130. The physical connection and the electrical connection between the elastic crown spring 150 and the pole 111 are realized through the elastic connection structure between the elastic crown spring 150 and the pole 111, so that the detachable connection of the battery cell 110 is realized, a welding means is avoided, the integral fault tolerance is improved, the connection process is simplified, and the disassembly and the assembly are convenient.

It should be noted that, in this embodiment, the plug-in structure 100 of the electrical core electrode post is suitable for electrical connection inside the battery, the busbar 130 may be a conductive connection piece used for connecting between different electrical cores 110 or between the electrical core 110 and a circuit board, and may be a copper bar, the end portion of the electrical core 110 is convexly provided with the electrode post 111, the elastic crown spring 150 is also made of a conductive material, and is integrally disposed on one side surface of the busbar 130, and the electrode post 111 and the elastic crown spring 150 are elastically abutted, so that electrical connection between the electrode post 111 and the busbar 130 can be achieved, thereby replacing a manner of welding the electrode post 111 and the busbar 130 in the conventional technology to achieve electrical connection.

In the present embodiment, the middle portion of the elastic crown spring 150 protrudes inward and elastically abuts against the outer peripheral surface of the pole 111, and the elastic crown spring 150 is electrically contacted with the pole 111. Specifically, the elastic crown spring 150 is in a cylindrical shape with a convex middle, and is adapted to the shape of the pole 111, and the size of the upper opening of the elastic crown spring 150 should be larger than the size of the pole 111, so that the pole 111 can be accurately inserted into the elastic crown spring 150, while the size of the middle opening of the elastic crown spring 150 should be smaller than the size of the pole 111 when the pole 111 is not inserted, so that the middle of the elastic crown spring 150 can be completely abutted against during the insertion of the pole 111, and the elastic crown spring 150 can be elastically expanded outwards, so that the middle of the elastic crown spring 150 can be elastically abutted against the peripheral wall of the pole 111.

Further, the elastic crown spring 150 includes a first end ring 151, a second end ring 153, and an elastic rail 155, wherein the first end ring 151 is disposed on the surface of the busbar 130, one end of the elastic rail 155 is connected to the first end ring 151, the other end extends toward a direction away from the busbar 130, the second end ring 153 is connected to one end of the elastic rail 155 away from the busbar 130, and the elastic rail 155 is at least partially protruded inwards and elastically abuts against the outer circumferential surface of the pole 111. Specifically, the first end ring 151 is integrally disposed on the surface of the busbar 130, and the middle portion of the elastic rail 155 protrudes inward and abuts against the outer peripheral surface of the pole 111. In the process of inserting the pole 111, the shapes and the sizes of the first end ring 151 and the second end ring 153 are not changed, but the elastic deformation is realized only through the elastic rail 155, and the two ends of the elastic rail 155 can be fixed by arranging the first end ring 151 and the second end ring 153, so that the basic structure of the elastic crown spring 150 is ensured not to be changed greatly and irreversibly.

In this embodiment, the first end ring 151 and the second end ring 153 are both circular, and the pole 111 is cylindrical and is adapted to the shape of the elastic slot. The diameters of the first end ring 151 and the second end ring 153 are the same and are both larger than the diameter of the pole 111, so that the pole 111 can be conveniently and smoothly inserted into the first end ring 151 and inserted into the elastic rail 155, and the diameter of the second end ring 153 is also larger than the diameter of the pole 111, so that the pole 111 can be conveniently and continuously inserted into the second end ring 153 downwards after being inserted into the elastic rail 155, and the insertion depth of the pole 111 can be ensured.

In this embodiment, the elastic rail 155 includes a plurality of elastic pieces 157 disposed at intervals, one end of each elastic piece 157 is connected to the first end ring 151, the other end is connected to the second end ring 153, and at least a portion of the elastic pieces 157 are bent inwards to be protruded and elastically abutted against the outer peripheral surface of the pole 111. Specifically, the plurality of elastic pieces 157 are uniformly and respectively arranged along a circumferential direction, and the middle portion of each elastic piece 157 is bent inwards, so as to be elastically abutted against the outer circumferential surface of the pole 111. Of course, in other preferred embodiments of the present utility model, the elastic rail 155 can also be a barrel structure, which can also achieve elastic deformation and elastic supporting effect.

In the present embodiment, the first end ring 151 and the second end ring 153 are parallel to each other, the elastic sheet 157 is integrally disposed between the first end ring 151 and the second end ring 153, and the elastic sheet 157 is a phosphor bronze sheet or a beryllium bronze sheet. Specifically, the first end ring 151, the second end ring 153, and the elastic sheet 157 may be integrally made of phosphor bronze or beryllium bronze, so as to ensure deformability and elasticity thereof, and further ensure that the middle portion of the elastic sheet 157 can elastically abut against the outer peripheral surface of the pole 111, and the elasticity thereof is less attenuated.

In this embodiment, the avoidance gaps 159 are formed between two adjacent elastic sheets 157, and the widths of the avoidance gaps 159 are the same, so that the elastic sheets 157 are uniformly distributed between the first end ring 151 and the second end ring 153. Specifically, the shapes of the plurality of elastic pieces 157 are the same, the width of the avoidance gap 159 between two adjacent elastic pieces 157 is the same, so that the plurality of elastic pieces 157 can be further ensured to be uniformly distributed, and in the embodiment, the plurality of elastic pieces 157 extend along the direction perpendicular to the surface of the busbar 130, so that the bending protrusions of the plurality of elastic pieces 157 are located on the same horizontal plane, and the same elastic supporting effect of the periphery of the pole 111 is ensured.

In the present embodiment, the plurality of battery cells 110 are provided, the bus bar 130 is provided with a plurality of elastic crown springs 150 at intervals, and the plurality of elastic crown springs 150 are correspondingly connected to the plurality of poles 111 on the plurality of battery cells 110, so that the plurality of poles 111 are connected in series as a whole. Preferably, two elastic crown springs 150 are disposed on the bus bar 130, and two corresponding battery cells 110 of the bus bar 130 may be provided, and the poles 111 of the two battery cells 110 are electrically connected with the bus bar 130 through the two elastic crown springs 150 at the same time, so as to realize electrical connection between the two battery cells 110. The distance between two adjacent elastic crown springs 150 is adapted to the distance between the two adjacent poles 111 on the battery cells 110, so that two poles 111 are conveniently inserted into two elastic crown springs 150 respectively. Of course, the two cells 110 may be connected in series or in parallel, which is not particularly limited herein. Preferably, the bus 130 in this embodiment may be a copper bar in series, acting in series. Also, the number of cells 110 and spring crowns 150 is merely illustrative and not limiting in any way.

It should be noted that, in this embodiment, the battery cell 110 may be arranged upside down, and the middle portion of the elastic crown spring 150 is a spring piece 157 capable of elastically deforming, so as to clamp the pole 111, and facilitate the insertion and extraction of the pole 111.

In the present embodiment, the height of the terminal 111 relative to the end surface of the battery cell 110 is greater than the height of the elastic crown spring 150 relative to the surface of the bus bar 130, so that the terminal 111 abuts against the bus bar 130 when inserted into the elastic slot. Specifically, the depth of the elastic slot formed by the elastic crown spring 150 is smaller than the height of the pole 111, and when the pole 111 is inserted into the elastic slot, the end of the pole 111 can be completely inserted into the elastic slot and is abutted against the surface of the busbar 130, so as to further ensure the electrical connection requirement between the pole 111 and the busbar 130.

In summary, in the electrical core pole plug structure 100 provided in the embodiment, the elastic crown spring 150 is disposed on the bus bar 130, and the elastic crown spring 150 encloses to form an elastic slot, so that the pole 111 can be inserted into the elastic slot in an interference manner, the elastic crown spring 150 can realize elastic expansion, and the elastic crown spring 150 can elastically abut against the outer peripheral surface of the pole 111, thereby realizing electrical connection between the pole 111 and the bus bar 130. And the pole 111 can be fully inserted into the elastic crown spring 150 and is abutted against the surface of the bus bar 130, further ensuring the electrical connection between the pole 111 and the bus bar 130. Compared with the prior art, the embodiment realizes the physical connection and the electrical connection with the pole 111 through the elastic connection structure between the elastic crown spring 150 and the pole 111, realizes the detachable connection of the battery cell 110, avoids the welding means, improves the integral fault tolerance, simplifies the connection process, and is convenient for disassembly and assembly.

Second embodiment

The present embodiment provides a battery, including a case and a battery cell post plugging structure 100, where the basic structure and principle of the battery cell post plugging structure 100 and the technical effects thereof are the same as those of the first embodiment, and for brevity, reference may be made to the corresponding contents in the first embodiment where the description of the embodiment is not mentioned.

In this embodiment, the battery includes a case and a battery cell post plugging structure 100, the battery cell post plugging structure 100 includes a battery cell 110 and a busbar 130, the end face of the battery cell 110 is provided with a post 111, the post 111 protrudes from the end face of the battery cell 110, one side surface of the busbar 130 is provided with an elastic crown spring 150, the elastic crown spring 150 encloses and forms an elastic slot, the post 111 is in interference plugging in the elastic slot, the elastic crown spring 150 is used for being elastically expanded under the plugging action of the post 111 and elastically propped against the outer peripheral surface of the post 111, and the post 111 is electrically connected with the busbar 130, wherein the battery cell 110 is accommodated in the case.

In this embodiment, the plurality of battery cells 110 may be arranged upside down, the busbar 130 is disposed at the bottom of the box, and the pole 111 is located at the bottom end of the battery cell 110 and is inserted into the elastic crown spring 150.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a electricity core utmost point post grafting structure, its characterized in that, includes electric core (110) and busbar (130), the terminal surface of electric core (110) is provided with utmost point post (111), utmost point post (111) protruding in the terminal surface of electric core (110), one side surface of busbar (130) is provided with elasticity crown spring (150), elasticity crown spring (150) enclose and is formed with an elasticity slot, utmost point post (111) interference grafting is in the elasticity slot, elasticity crown spring (150) are used for elasticity expansion under the grafting effect of utmost point post (111), and elasticity supports and hold the outer peripheral face of utmost point post (111), just utmost point post (111) with busbar (130) electricity is connected.

2. The electrical core terminal plugging structure according to claim 1, wherein a middle portion of the elastic crown spring (150) protrudes inward and is elastically supported on an outer peripheral surface of the terminal (111), and the elastic crown spring (150) is in electrical contact with the terminal (111).

3. The electrical core pole plug structure according to claim 2, wherein the elastic crown spring (150) comprises a first end ring (151), a second end ring (153) and an elastic fence (155), the first end ring (151) is disposed on the surface of the busbar (130), one end of the elastic fence (155) is joined to the first end ring (151), the other end extends in a direction away from the busbar (130), the second end ring (153) is joined to one end of the elastic fence (155) away from the busbar (130), and the elastic fence (155) is at least partially protruded inwards and elastically abuts against the outer circumferential surface of the pole (111).

4. A plug-in structure of a cell terminal according to claim 3, wherein the elastic fence (155) comprises a plurality of elastic sheets (157) arranged at intervals, one end of each elastic sheet (157) is connected to the first end ring (151), the other end is connected to the second end ring (153), and at least part of the elastic sheets (157) are bent inwards to be protruded and elastically abutted against the outer peripheral surface of the terminal (111).

5. The electrical core pole plug structure according to claim 4, wherein the first end ring (151) and the second end ring (153) are parallel to each other, the elastic sheet (157) is integrally disposed between the first end ring (151) and the second end ring (153), and the elastic sheet (157) is a phosphor bronze sheet or a beryllium bronze sheet.

6. The electrical core terminal plugging structure according to claim 4, wherein an avoidance gap (159) is formed between two adjacent shrapnel (157), and the widths of the avoidance gaps (159) are the same, so that the shrapnels (157) are uniformly distributed between the first end ring (151) and the second end ring (153).

7. A plug structure according to claim 3, wherein the first end ring (151) and the second end ring (153) are both circular, and the post (111) is cylindrical and is adapted to the shape of the elastic slot.

8. The electrical core-post plugging structure according to any one of claims 1 to 7, wherein the electrical cores (110) are plural, the bus bars (130) are provided with plural elastic crown springs (150) at intervals, and the plural elastic crown springs (150) are correspondingly connected to the posts (111) on the electrical cores (110) so that the plural posts (111) are connected in series as a whole.

9. The cell post plugging structure according to any one of claims 1 to 7, wherein a height of the post (111) with respect to an end face of the cell (110) is larger than a height of the elastic crown spring (150) with respect to a surface of the bus bar (130) so that the post (111) collides with the bus bar (130) when inserted into the elastic slot.

10. A battery comprising a housing and the cell post plug structure according to any one of claims 1-9, the cell (110) being housed in the housing.