CN217691510U - Battery pack - Google Patents

Abstract

The utility model belongs to the electric energy storage device field especially relates to a battery pack, include: the casing is provided with the installing frame in the casing, be equipped with a plurality of electricity core in the installing frame, connect through the nickel piece between a plurality of electricity core, the nickel piece sets up the both ends at electric core, be provided with the spacing arch that can restrict electric core along its axial displacement on the shells inner wall, spacing arch sets up in the both ends outside of electric core, one side and the electrode connection of electric core tip of nickel piece, the opposite side of nickel piece can contact with spacing arch. The utility model limits the two ends of the battery cell by arranging the limiting bulges on the shell, and simultaneously, the electrodes at the two ends of the battery cell are connected with the nickel sheets, so that the limiting bulges are contacted with the nickel sheets to limit the battery cell during the drop test, and the damage of shifting, colliding and damaging of the battery cell can be avoided; and the limiting bulge is used as a substitute for the upper blocking edge of the traditional battery pack, so that the installation flow of the battery pack can be reduced, the production cost can be reduced, and the automatic production is facilitated.

Description

Battery pack

Technical Field

The utility model belongs to the electric energy storage device field especially relates to a battery package.

Background

With the rapid development of science and technology, the application field of the battery pack becomes wider and wider, and the processing and manufacturing process of the battery pack is stricter and stricter.

The battery package generally includes casing and inside electric core, and electric core includes installing frame and battery again, in order to guarantee to produce property ability, need drop test before the battery package dispatches from the factory, for the electrode of guaranteeing electric core both ends can not bump in drop test and produce the indentation, generally can set up in the installing frame outside of battery package and keep off the edge, carries out the cladding to the electrode at battery both ends, avoids electric core both ends electrode to damage.

Chinese patent No. 201921572647.6 discloses a battery pack with a high-efficiency heat dissipation structure, which includes: the battery cell framework comprises a first framework and a second framework, the first framework and the second framework are arranged at the two ends of the battery cell respectively, and both sides of the first framework and the second framework are respectively provided with a connecting lock catch and a buckle pin, so that the battery cell is fixed between the first framework and the second framework.

The battery cell frameworks in the application are arranged at two ends of the battery cell in a buckling mode, so that the effect of blocking edges is achieved, and electrodes at the end parts of the battery cell are protected, but the manual buckling is needed in the installation process of the battery pack due to the mode, and the production efficiency is influenced; meanwhile, the structure protects the electrode at the end part of the battery core, but also causes the processing step and the production cost of the battery pack to be increased.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to prior art, provide a simple structure, simple to operate and can carry out the battery package protected to electric core both ends electrode.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a battery pack, comprising: the casing is provided with the installing frame in the casing, be equipped with a plurality of electricity core in the installing frame, connect through the nickel piece between a plurality of electricity core, the nickel piece sets up the both ends at electric core, be provided with the spacing arch that can restrict electric core along its axial displacement on the shells inner wall, spacing arch sets up in the both ends outside of electric core, one side and the electrode connection of electric core tip of nickel piece, the opposite side of nickel piece can contact with spacing arch.

The further technical scheme is as follows: a distance is arranged between one side of the limiting protrusion, which is close to the battery core, and the end part of the battery core, and the distance is not smaller than the thickness of the nickel sheet.

The further technical scheme is as follows: the limiting bulges are a plurality of limiting bulges and are respectively positioned at the outer sides of the connection points of the battery cells and the nickel sheets.

The further technical scheme is as follows: the plurality of limiting protrusions are arranged at intervals along the length direction of the battery pack, and the distance between every two adjacent limiting protrusions is not smaller than the distance between every two adjacent battery cells.

The further technical scheme is as follows: the limiting bulges are arranged on two sides of the shell, and the limiting bulges on two sides of the shell are respectively positioned on the outer sides of two ends of the same electric core or the outer sides of two ends of different electric cores.

The further technical scheme is as follows: when a plurality of limiting bulges are positioned on the outer side of the same end of the battery cell and the center of the limiting bulges is positioned on the same vertical line, the limiting bulges are combined into a whole.

The further technical scheme is as follows: the mounting frame is located between the limiting bulges, and the end part of one side, close to the mounting frame, of each limiting bulge is provided with an arc curved surface or an inclined surface.

The further technical scheme is as follows: and limiting bulges are arranged on the inner wall of the shell corresponding to the connection positions of the battery cell and the nickel sheets.

The further technical scheme is as follows: the utility model discloses a spacing post of installation frame, including the installation frame, be provided with spacing post in the casing is vertical, spacing post is two at least and is located respectively the both ends outside of installing frame, the tip of installing frame is provided with the concave surface or the convex part that match spacing post shape, and the installing frame laminating can be followed spacing post and slided in spacing post setting.

The further technical scheme is as follows: the limiting column is internally provided with a connecting bolt, the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are mutually buckled and connected through the connecting bolt.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The utility model provides a battery pack, through set up spacing arch on the casing to spacing to the both ends of electric core, be connected with the nickel piece on the electrode at electric core both ends simultaneously, can protect the electrode, spacing arch contacts with the nickel piece and spacing to the electric core when carrying out drop test, avoids electric core aversion collision, and the electrode at electric core both ends is located the nickel piece inboard simultaneously, can effectively avoid the electrode collision impaired; and spacing arch sets up on the casing, and manufacturing is convenient, and spacing arch replaces keeping off the edge on traditional battery package, and it is spacing to the both ends of electric core when the battery package is installed, only need with the installing frame along the spacing arch of casing both sides setting put into the casing can, need not additionally to set up at the both ends of installing frame and keep off the edge, both reduced the installation procedure who keeps off the edge, save and keep off the link along the lock, be favorable to automated production, again can reduction in production cost.

(2) Spacing between spacing arch and the electric core is less than nickel piece thickness, guarantees to put into the nickel piece between the two, and the nickel piece plays the guard action to the electrode.

(3) The limiting bulge is positioned outside the connection point of the battery cell and the nickel sheet, so that the limiting bulge and the battery cell can be arranged correspondingly; the spacing between the limiting bulges is smaller than the spacing between the adjacent electric cores, so that each limiting bulge is ensured to correspond to one electric core; the spacing arch of casing both sides is located the both ends outside of same electric core or the both ends outside of different electric cores respectively, and the both ends of guaranteeing electric core all are provided with spacing arch.

(4) The plurality of limiting bulges positioned on the same vertical line are integrated, and the processing and the manufacturing of the limiting bulges are facilitated.

(5) The arc curved surface or the inclined surface arranged on the limiting protrusion can play a role in guiding, so that the installation frame is convenient to put in during installation, and the collision of the battery cell in the installation process is avoided; all be provided with spacing arch on the position of corresponding electric core and nickel piece tie point, can carry on spacingly to each electric core, ensure that the electrode of electric core tip can not collide impaired.

(6) The limiting columns arranged in the shell can limit the directions of two ends of the mounting frame, so that the electrode friction damage caused by the transverse movement of the battery cell is avoided; be provided with concave surface or convex part on the installing frame, its laminating spacing post sets up, puts into the installing frame during easy to assemble.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is a top view of a preferred embodiment of the present invention with the upper housing removed.

Fig. 3 is a cross-sectional view of a preferred embodiment of the invention shown in fig. 2.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic structural diagram of the lower housing according to a preferred embodiment of the present invention.

Fig. 6 is a schematic structural diagram of the mounting frame according to a preferred embodiment of the present invention.

Fig. 7 is a schematic structural view of the present invention in which the limiting protrusions are located outside the two ends of the same electrical core in a preferred embodiment.

Fig. 8 is a schematic structural view of the limiting protrusion located outside two ends of different battery cells according to a preferred embodiment of the present invention.

In the figure, 100, the housing; 110. an upper housing; 120. a lower housing; 121. an arc-shaped bulge; 200. installing a frame; 300. an electric core; 400. a nickel sheet; 500. a limiting bulge; 600. a limiting column.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

As shown in fig. 1 to 6, a battery pack includes: casing 100, be provided with installing frame 200 in casing 100, be equipped with a plurality of electricity core 300 in the installing frame 200, connect through nickel piece 400 between a plurality of electricity core 300, nickel piece 400 sets up the both ends at electricity core 300, be provided with on the casing 100 inner wall and restrict electric core 300 along its axial displacement's spacing arch 500, spacing arch 500 sets up in the both ends outside of electricity core 300, one side and the electrode connection of electric core 300 tip of nickel piece 400, the opposite side of nickel piece 400 can contact with spacing arch 500.

The utility model provides a pair of battery pack, through set up spacing arch 500 on casing 100 to spacing to the both ends of electric core 300, be connected with nickel piece 400 on the electrode at electric core 300 both ends simultaneously, can protect the electrode, spacing arch 500 contacts with nickel piece 400 and spacing to electric core 300 when carrying out the drop test, avoid electric core 300 to shift and bump, the electrode at electric core 300 both ends is located the inboard of nickel piece 400 simultaneously, can effectively avoid the electrode to bump impairedly; spacing arch 500 sets up on casing 100, the manufacturing is convenient, and spacing arch 500 replaces the fender edge on traditional battery package, it is spacing to the both ends of electric core 300 when the battery package is installed, only need with installing frame 200 along the spacing arch 500 that casing 100 both sides set up put into in casing 100 can, need not additionally to set up at the both ends of installing frame 200 and keep off the edge, the installation procedure who keeps off the edge has both been reduced, save and keep off the link along the lock, be favorable to automated production, again can reduction in production cost.

Specifically, the limiting protrusion 500 in the present embodiment is integrally formed with the housing 100; the battery cell 300 in this embodiment horizontally penetrates through the mounting frame 200 and is fixedly connected with the mounting frame 200, and the end portions of the battery cells 300 on the same side are located in the same plane; a circuit board is arranged above the mounting hole 200, and the nickel sheet 400 is electrically connected with the circuit board.

Preferably, a space is formed between one side of the limiting protrusion 500 close to the battery cell 300 and the end of the battery cell 300, and the space is not smaller than the thickness of the nickel sheet 400.

In this embodiment, the distance between the limiting protrusion 500 and the battery cell 300 is smaller than the thickness of the nickel sheet 400, so that the nickel sheet 400 can be placed between the limiting protrusion 500 and the battery cell 300, the nickel sheet 400 can protect the electrode, and the limiting protrusion 500 is combined to limit the battery cell 300, so as to prevent the electrode from being damaged due to collision when the battery cell 300 moves; specifically, in this embodiment, two rows of battery cells 300 are arranged in the vertical direction of the mounting frame 200, the battery cells 300 are electrically connected through the nickel sheet 400, and the thickness of the nickel sheet 400 is uniform.

Preferably, the plurality of limiting protrusions 500 are respectively located at the outer sides of the connection points between the plurality of battery cells 300 and the nickel sheets 400.

Specifically, the limiting function of the limiting protrusion 500 in this embodiment is realized by contacting one side of the limiting protrusion, which is close to the battery cell 300, with the nickel sheet 400, that is, the outer sides of the two ends of the battery cell 300 are respectively provided with at least one limiting protrusion 300 capable of contacting with the nickel sheet 400, except for the situation in the drawings, the shape and the setting mode of the limiting protrusion 500 may also be various, for example: the two limiting bulges 500 are respectively arranged at the outer sides of the two ends of the battery cell 300, and the width of the two limiting bulges 500 is equal to that of the battery pack; or a plurality of limiting protrusions 500 are arranged along the radial direction of one of the battery cells 300 and positioned outside the electrode at the end of the battery cell 300; or the limiting protrusions 500 are arranged at intervals along the axial direction of the battery core, that is, the arrangement mode adopted in this embodiment; or the limiting protrusion 500 may be disposed neither in the axial direction nor in the radial direction of the battery cell 300, as long as the end of the limiting protrusion 500 is ensured to be able to contact the nickel plate 400; there are also various situations in the size of the limiting protrusions 500 on both sides, and the length of the limiting protrusions 500 on the outer sides of both ends of the battery cell 300 in this embodiment is different.

Further preferably, the plurality of limiting protrusions 500 are arranged at intervals along the length direction of the battery pack, and the distance between two adjacent limiting protrusions 500 is not less than the distance between two adjacent battery cells 300.

In this embodiment, the limiting protrusions 500 are located at the outer side of the connection point between the battery cell 300 and the nickel plate, and define the distance between two adjacent limiting protrusions 500, so that the corresponding arrangement of the limiting protrusions 500 and the battery cell 300 can be ensured.

Further preferably, the limiting protrusions 500 are disposed on two sides of the casing 100, and the limiting protrusions 500 on two sides of the casing 100 are respectively located on the outer sides of two ends of the same battery cell 300 or the outer sides of two ends of different battery cells 300.

In this embodiment, the limiting protrusion 500 is located outside a connection point between the battery cell 300 and the nickel plate 400, so that the limiting protrusion 500 and the battery cell 300 can be ensured to be arranged correspondingly; the spacing between the limiting protrusions 500 is smaller than the spacing between adjacent battery cells 300, so that each limiting protrusion 500 corresponds to one battery cell; the limiting protrusions 500 on the two sides of the casing 100 are respectively located on the outer sides of the two ends of the same battery cell 300 or the outer sides of the two ends of different battery cells 300, so that the two ends of the battery cells 300 are provided with the limiting protrusions 500.

Specifically, as shown in fig. 7 to 8, the limiting protrusions 500 disposed on both sides of the casing 100 may be located outside both ends of the same battery cell 300, and the limiting protrusions 500 are disposed along the axial direction of the battery cell 300; or the spacing protrusions 500 are located at the outer sides of the two ends of different battery cells 300, and the spacing protrusions 500 at the outer sides of the two ends of the battery cells 300 are arranged in a staggered manner, so that the battery cells 300 are fixed in the mounting frame 200 in the battery pack, the end parts of the battery cells 300 are aligned and arranged, the two ends of any battery cell 300 are spaced, and spacing of all the battery cells 300 can be realized.

Preferably, when the plurality of limiting protrusions 500 are located at the outer side of the same end of the battery cell 300 and the centers thereof are located on the same vertical line, the plurality of limiting protrusions 500 are integrated.

Preferably, the mounting frame 200 is located between the limiting protrusions 500, and an arc curved surface or an inclined surface is disposed at an end of one side of the limiting protrusion 500 close to the mounting frame 200.

Specifically, the setting of spacing arch 500 in this embodiment is in casing 100 side and upwards extends from the bottom of casing 100, and the upper end outside of spacing arch 500 is the inclined plane of downward sloping, can follow the spacing arch 500 that casing 100 both sides set up when installing frame 200 and put into, and the inclined plane of spacing arch 500 tip plays the guide effect, and easy to assemble can avoid electric core 300 collision impaired in the installation simultaneously.

Preferably, the inner wall of the casing 100 is provided with a limiting protrusion 500 at a position corresponding to a connection position of the battery cell 300 and the nickel plate 400.

In this embodiment, electric core 300 all sets up spacing arch 500 with nickel piece 400 junction, can be spacing to each electric core, it is impaired to ensure that the electrode of electric core tip can not collide, specifically, in this embodiment, nickel piece 400 is for the increase of strength, its middle part adopts protruding structure, simultaneously because the quantity of electric core 300 is 2 rows 5 rows in this embodiment, connect through nickel piece 400 between the electric core 300 that the level is adjacent, so last electric core 300 of a list is connected through the nickel piece that erects, limit arch 500 is not established to its outside, but because all electric cores 300 are fixed with installing frame 200, it can realize spacing to the whole of all electric cores 300 to spacing partial electric core 300, guarantee that electric core 300 tip electrode can not be impaired.

In this embodiment, a reinforcing rib is further disposed on the inner wall of the casing 100, and the reinforcing rib has a T-shaped or L-shaped cross section, and does not contact with the nickel sheet 400 at the end of the battery cell 300, so as to reinforce the casing 100.

Preferably, the casing 100 is internally and vertically provided with two limiting columns 600, the two limiting columns 600 are at least respectively located at the outer sides of the two ends of the mounting frame 200, the end part of the mounting frame 200 is provided with a concave surface or a convex part matched with the shape of the limiting column 600, and the mounting frame 200 is attached to the limiting column 600 and can slide along the limiting column 600.

Further preferably, a connecting bolt is arranged in the limiting column 600, the housing 100 includes an upper housing 110 and a lower housing 120, and the upper housing 110 and the lower housing 120 are fastened to each other and connected by the connecting bolt.

In this embodiment, the limiting posts 600 disposed in the casing 100 limit the directions of the two ends of the mounting frame 200 to prevent the electrode from being damaged due to friction caused by the transverse movement of the battery cell 300, and play a role in connecting and fixing the upper casing 110 and the lower casing 120; the mounting frame 200 is provided with a concave or convex part which is attached to the limiting column 600, so that the mounting frame 200 can be conveniently placed into the lower shell 120 when the battery pack is mounted; the position limiting column 600 can also be integrally formed with the shell 100, so that the processing and manufacturing are convenient.

Specifically, the limiting column 600 in this embodiment is a cylindrical structure, and the position where the limiting column is attached to the mounting frame 200 is set to be a plane; the housing 100 in this embodiment adopts an up-down structure, the upper housing 110 and the lower housing 120 are both provided with the limiting protrusions 500, one sides of the limiting protrusions 500 on the upper housing 110 and the lower housing 120, which are close to the battery cell, can both contact with the nickel sheet 400, and the ends of the limiting protrusions 500 on the upper housing 110 and the lower housing 120, which are close to each other, are provided with inclined planes, when a battery pack is installed, the installation frame 200 is placed into the lower housing 120 along the limiting protrusions 500 and the limiting posts 600, the upper housing 110 and the lower housing are buckled along the battery cell 300, and the inclined planes play a role in guiding and are convenient to install; the bottom of the lower shell 120 in this embodiment is further provided with an arc-shaped protrusion 121 matching the side shape of the battery cell 300, so that the battery cell 300 can be stably supported after the mounting frame 200 is placed in, and damage to the electrode due to displacement of the battery cell 300 is avoided.

It is noted that the description herein of "first," "second," "a," etc. is for descriptive purposes only and is not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The terms "connected," "fixed," and the like are to be construed broadly, e.g., "fixed" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A battery pack, comprising: casing (100), be provided with installing frame (200) in casing (100), be equipped with a plurality of electricity core (300) in installing frame (200), connect through nickel piece (400) between a plurality of electricity core (300), nickel piece (400) set up the both ends at electricity core (300), its characterized in that, be provided with spacing arch (500) that can restrict electricity core (300) along its axial displacement on casing (100) inner wall, spacing arch (500) set up the both ends outside at electricity core (300), one side and the electrode connection of electricity core (300) tip of nickel piece (400), the opposite side of nickel piece (400) can contact with spacing arch (500).

2. The battery pack according to claim 1, wherein a space is formed between one side of the limiting protrusion (500) close to the battery cell (300) and the end of the battery cell (300), and the space is not smaller than the thickness of the nickel sheet (400).

3. The battery pack according to claim 2, wherein the plurality of limiting protrusions (500) are respectively located at the outer sides of the connection points of the plurality of battery cells (300) and the nickel sheets (400).

4. The battery pack according to claim 3, wherein a plurality of limiting protrusions (500) are arranged at intervals along the length direction of the battery pack, and the distance between two adjacent limiting protrusions (500) is not less than the distance between two adjacent battery cells (300).

5. The battery pack according to claim 3, wherein the limiting protrusions (500) are disposed on two sides of the casing (100), and the limiting protrusions (500) on two sides of the casing (100) are respectively located outside two ends of the same electrical core (300) or outside two ends of different electrical cores (300).

6. The battery pack according to claim 4 or 5, wherein the plurality of limiting protrusions (500) are integrated when the plurality of limiting protrusions (500) are located at the outer side of the same end of the battery cell (300) and the centers of the plurality of limiting protrusions are located on the same vertical line.

7. The battery pack according to claim 6, wherein the mounting frame (200) is located between the limiting protrusions (500), and an end of one side of the limiting protrusion (500) close to the mounting frame (200) is provided with an arc curved surface or an inclined surface.

8. The battery pack according to claim 7, wherein a position on the inner wall of the casing (100) corresponding to the connection between the battery cell (300) and the nickel plate (400) is provided with a limiting protrusion (500).

9. The battery pack according to claim 1, wherein the housing (100) is vertically provided with at least two limiting posts (600), the at least two limiting posts (600) are respectively located at the outer sides of the two ends of the mounting frame (200), the end of the mounting frame (200) is provided with a concave surface or a convex portion matching the shape of the limiting posts (600), and the mounting frame (200) is attached to the limiting posts (600) and can slide along the limiting posts (600).

10. The battery pack according to claim 9, wherein the limiting post (600) is provided with a connecting bolt therein, the housing (100) comprises an upper housing (110) and a lower housing (120), and the upper housing (110) and the lower housing (120) are fastened to each other and connected by the connecting bolt.

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