CN212934750U

CN212934750U - Battery pack

Info

Publication number: CN212934750U
Application number: CN202022203288.6U
Authority: CN
Inventors: 何亚飞; 其他发明人请求不公开姓名
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-04-09
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses a battery pack, which comprises a shell, wherein the shell is internally provided with a holding area, and is provided with a cover plate covering the holding area; the plurality of cross beams are arranged in the accommodating area, and are sequentially arranged and separated from each other; the battery cell array is arranged in the accommodating area and is sequentially arranged along the arrangement direction of the cross beam; each cell group column includes: the battery cell array comprises a plurality of battery cells which are arranged in sequence, wherein the arrangement direction of each battery cell is intersected with the arrangement direction of each battery cell array; at least one row of cell array is arranged between any two adjacent cross beams; the locking piece is connected with the cover plate and the cross beam; the cover plate is provided with a plurality of grooves, the extending directions of the grooves and the cross beams are consistent, and the grooves are respectively arranged corresponding to the cross beams; the bottom of each groove is abutted against the cross beam corresponding to the groove, and the bottom of each groove is at least partially pressed against the top of the cell group column adjacent to the cross beam. The utility model discloses battery pack assembly is compacter, and the equipment is more convenient, and the cost is lower.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field, in particular to battery pack.

Background

Lithium batteries are widely used in the field of new energy automobiles, and the batteries have more safety problems due to the characteristics of the batteries. For example, the compactness of the battery cell assembly inside the battery pack is not enough, so that the battery cells inside the battery pack collide with each other, and therefore, the structure of the battery cell is damaged, and further, the safety problem is caused. For this phenomenon, an additional pressing member is usually required to press the battery cell, so as to prevent the battery cell from shaking inside the battery pack to cause safety problems. But assemble through setting up extra pressure and holding the piece, lead to the equipment part more and the assembly comparatively loaded down with trivial details, promoted material cost and assembly cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery pack, the utility model discloses battery pack is joined in marriage compacter, and assembles more conveniently, and the cost is lower.

In order to solve the above technical problem, an embodiment of the present invention provides a battery pack, including: the shell is internally provided with an accommodating area and is provided with a cover plate covering the accommodating area; the plurality of cross beams are arranged in the accommodating area, and are sequentially arranged and separated from each other; the battery cell array is arranged in the accommodating area and is sequentially arranged along the arrangement direction of the cross beam; each cell group column includes: the battery cell array comprises a plurality of battery cells which are arranged in sequence, wherein the arrangement direction of each battery cell is intersected with the arrangement direction of each battery cell array; at least one row of cell array is arranged between any two adjacent cross beams; the locking piece is connected with the cover plate and the cross beam; the cover plate is provided with a plurality of grooves, the extending directions of the grooves and the cross beams are consistent, and the grooves are respectively arranged corresponding to the cross beams; the bottom of each groove is abutted against the cross beam corresponding to the groove, and at least part of the bottom of each groove presses the top of the cell group column adjacent to the cross beam.

The utility model discloses embodiment is for prior art, and this battery package has realized holding to the pressure that electric core group was listed as through the apron that takes the recess when encapsulating the battery package for electric core group's assembly is compacter, and the equipment is more convenient, and the cost is lower.

In one embodiment, the width of the bottom of the groove is greater than the width of its corresponding beam.

In one embodiment, the locking member is provided in plurality, and at least one locking member is provided in each of the recesses.

In one embodiment, the retaining member includes: the cap end is arranged on the cross beam, and the bolt penetrates through the bottom of the groove and is inserted into the cap end.

In an embodiment, a buffer member is disposed between the cell group column and the bottom of the groove.

In one embodiment, the buffer is a rubber pad.

In an embodiment, each electric core group is further provided with a wire harness isolation plate arranged in parallel with the buffer member, and the buffer member is located between the cross beam and the wire harness isolation plate.

In one embodiment, the housing further has a bottom plate and a side frame surrounding the bottom plate, and the side frame forms the accommodating area around the bottom plate; the cross beam is fixed with the bottom plate.

In an embodiment, each of the cell arrays is fixed on the bottom plate by a heat-conducting adhesive.

In one embodiment, the cover plate further has a shielding ledge extending to the outside of the side frame.

Drawings

Fig. 1 is an exploded view of a schematic structural diagram of a battery pack according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is an enlarged view of a portion B in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

The utility model discloses a battery pack, which comprises a shell, wherein the shell is internally provided with a holding area, and is provided with a cover plate covering the holding area; the plurality of cross beams are arranged in the accommodating area, and are sequentially arranged and separated from each other; the battery cell array is arranged in the accommodating area and is sequentially arranged along the arrangement direction of the cross beam; each cell group column includes: the battery cell array comprises a plurality of battery cells which are arranged in sequence, wherein the arrangement direction of each battery cell is intersected with the arrangement direction of each battery cell array; at least one row of cell array is arranged between any two adjacent cross beams; the locking piece is connected with the cover plate and the cross beam; the cover plate is provided with a plurality of grooves, the extending directions of the grooves and the cross beams are consistent, and the grooves are respectively arranged corresponding to the cross beams; the bottom of each groove is abutted against the cross beam corresponding to the groove, and the bottom of each groove is at least partially pressed against the top of the cell group column adjacent to the cross beam.

Embodiments of the present invention are described below with reference to the drawings. As shown in fig. 1 and fig. 2, the battery pack of the present invention includes a housing 1, a plurality of beams 2, a plurality of locking members 3, and a plurality of cell arrays 4. The housing 1 includes a cover plate 11, a side frame 12 and a bottom plate 13, the side frame 12 forms an accommodating area 5 around the bottom plate 13, and the cover plate 11 covers the accommodating area 5. The individual cross beams 2 are arranged inside the receiving area 5 and are arranged in sequence and spaced apart from each other. Each cell group column 4 is located inside the holding area 5 and is arranged between each cross beam 2, wherein at least one row of cell group columns 4 is arranged between any two adjacent cross beams 2. The arrangement direction of each cell in each cell group column 4 intersects with the arrangement direction of each cell group column 4, and intersects with the arrangement direction of each cross beam 2. Preferably, the arrangement direction of the cells is orthogonal to the arrangement direction of each cell group column 4, and is orthogonal to the arrangement direction of each cross member 2.

The cover plate 11 is provided with a plurality of grooves 14, the arrangement direction of each groove 14 is consistent with the extending direction of each beam 2, and each groove 14 is arranged opposite to each beam 2. Specifically, the bottom of the groove 14 abuts against the cross beam 2 corresponding to the groove 14, the width of the bottom of the groove 14 is set to be larger than that of the cross beam 2 corresponding to the groove, the part exceeding the cross beam 2 can be pressed and held at the top of the battery cell array 4 adjacent to the cross beam 2, and then the cover plate 11 is connected with the cross beam 2 through the locking piece 3, so that the battery cell array 4 is fastened, the battery cell array cannot shake in a battery pack, and the stability of components inside the battery pack is guaranteed.

The retaining member 3 may be provided in plurality, and at least one retaining member 3 is provided in each recess 14. Specifically, the locking member 3 includes a cap end 31 and a stud 32, wherein the cap end 31 is disposed on the beam 2, and can be clamped, welded, or integrally formed. The peg 32 extends through the bottom of the recess 14 and is inserted into the corresponding cap end 31, in particular by screwing, although other forms are possible. Can realize dismantling of apron through the screw thread mounting means, make things convenient for the maintenance to look over. Preferably, a locking member 3 can be arranged in each 8cm of the groove, and by arranging a plurality of locking members 3 at equal distances, uniform abutting pressure can be provided to act on the cell group columns 4, so that better installation stability is ensured. This battery package has realized holding to the pressure of electric core group row through the apron that takes the recess when encapsulating the battery package for the assembly of electric core group row is compacter, and the equipment is more convenient, and the cost is lower.

In some embodiments, a buffer 6 is further disposed between the battery cell row 4 and the bottom of the groove 14. It is conceivable that, as shown in fig. 3, when the groove 14 abuts against the cross beam 2, in order to ensure that the groove 14 can be pressed on the cell array, it is necessary to ensure that the side of the cell array 4 facing the cover plate 11 and the side of the cross beam 2 facing the cover plate 11 are on the same horizontal plane. If the two parts are not on the same plane, the assembly effect is affected, and the machining precision requirement and the assembly requirement of each part are necessarily increased in order to enable the two parts to be on the same plane. In the present embodiment, the buffer member 6 is disposed between the cell array 4 and the bottom of the groove 14, a side of the cell array 4 facing the cover plate 11 may be lower than a side of the cross beam 2 facing the cover plate 11, and the cell array 4 is pressed between the cell array 4 and the bottom of the groove 14 by adding the buffer member 6. The buffer member 6 has a certain compression amount, so that the problems can be solved, the precision requirement on parts is reduced, and the cost is reduced. The buffer piece 6 can be sponge with gum, and is adhered to the bottom of the cover plate 11, so that the buffer piece can be moved randomly, and the buffer piece is low in cost and convenient to assemble. The buffer 6 may also be a rubber pad.

In some embodiments, as shown in fig. 3, a harness isolation plate 7 is further disposed on the cell array 4 side by side with the buffer member 6, and the buffer member 6 is located between the beam 2 and the harness isolation plate 7, while the harness isolation plate 7 is also located between the cover plate 11 and the cell array 4. That is, the wire harness isolation plate 7 is placed above the battery cell array 4, and it is conceivable that the wire harness isolation plate 7 may completely cover one surface of the battery cell array 4 facing the cover plate 11, or may partially cover one surface of the battery cell array 4 facing the cover plate 11. When the wire harness isolation plate 7 completely covers one surface of the battery cell array 4 facing the cover plate 11, the bottom of the groove 14 presses and holds the battery cell array 4 by pressing and holding the wire harness isolation plate 7, so that the battery cell array 4 is indirectly pressed and held. The wire harness isolation plate 7 includes a connection strap and an isolation plate bottom plate (not shown in the figure), and the connection strap is disposed on the isolation plate bottom plate and used for realizing the electrical connection between two adjacent electric cores. The bottom plate of the isolation plate is provided with a convex part higher than the bottom plate of the isolation plate, and the periphery of the convex part surrounds the connection bars, so that the short circuit which possibly occurs between the connection bars is avoided, and the insulation effect is ensured.

In some embodiments, the cell stack rows 4 are fixed to the base plate 13 by a thermally conductive adhesive. Such an arrangement not only has a fixing effect on the cell stack 4, but also is beneficial to uniformly transferring heat to the bottom plate 13 through the heat conducting glue, and further dissipating heat outwards through the bottom plate 13. In addition, still have the eaves 15 that shelters from that extends to the outside of side frame 12 on the apron 11, shelter from eaves 15 through the setting and can avoid liquid and dust to enter into the battery package inside along the gap between apron 11 and the side frame 12 because of gravity, reach waterproof dirt-proof effect.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. A battery pack, comprising:

the shell is internally provided with an accommodating area and is provided with a cover plate covering the accommodating area;

the plurality of cross beams are arranged in the accommodating area, and are sequentially arranged and separated from each other; wherein

The battery cell array is arranged in the accommodating area and is sequentially arranged along the arrangement direction of the cross beam; each of the cell group columns includes: the battery cell array comprises a plurality of battery cells which are arranged in sequence, wherein the arrangement direction of each battery cell is intersected with the arrangement direction of each battery cell array; at least one row of cell array is arranged between any two adjacent cross beams;

the locking piece is used for connecting the cover plate and the cross beam;

the cover plate is provided with a plurality of grooves, the extending directions of the grooves and the cross beams are consistent, and the grooves are respectively arranged corresponding to the cross beams; the bottom of each groove is abutted against the cross beam corresponding to the groove, and the bottom of each groove is at least partially pressed against the top of the cell group column adjacent to the cross beam.

2. The battery pack of claim 1, wherein the width of the bottom of the groove is greater than the width of its corresponding cross beam.

3. The battery pack of claim 1, wherein the retaining member is provided in plurality and at least one retaining member is provided in each of the recesses.

4. The battery pack of claim 3, wherein the retaining member comprises: the cap end is arranged on the cross beam, and the bolt penetrates through the bottom of the groove and is inserted into the cap end.

5. The battery pack of claim 1, wherein a buffer is disposed between the battery cell array and the bottom of the groove.

6. The battery pack of claim 5, wherein the cushioning member is a rubber pad.

7. The battery pack of claim 5, wherein each of the battery cell groups further includes a harness isolation plate disposed alongside the buffer member, and the buffer member is disposed between the cross member and the harness isolation plate.

8. The battery pack of claim 1, wherein the housing further has a bottom plate and side frames disposed around the bottom plate, the side frames forming the receiving area around the bottom plate;

the cross beam is fixed with the bottom plate.

9. The battery pack of claim 8, wherein each of the cell rows is fixed to the base plate by a thermally conductive adhesive.

10. The battery pack of claim 8, wherein the cover plate further comprises a shielding ledge extending outside the side frame.