CN217507507U - Battery module - Google Patents

Abstract

The application relates to a battery module relates to new energy battery technical field, and this battery module includes: the battery cell assembly comprises a plurality of battery cell units, the battery cell units are sequentially arranged in the shell along the length direction of the shell, and the top end of each battery cell unit is provided with a plurality of buckles; the top cover is arranged on the shell, the top cover is provided with a plurality of positioning holes, and the positioning holes are in clamping fit with the buckles in a one-to-one correspondence manner. The utility model provides a battery module has solved top cap and battery module major structure connection problem and has realized reliable and stable's linkage effect.

Description

Battery module

Technical Field

The application relates to the technical field of new energy batteries, in particular to a battery module.

Background

At present, in the new energy lithium battery industry, the structural style of a battery module is many, and a commonly used battery module is a plurality of electric cores arranged in sequence.

The fixed scheme of current battery module upper cover does, fixes the upper cover on the battery module division board, and in this kind of mounting structure, the division board only relies on electric core utmost point post and piece to carry on spacingly, and consequently the division board can move about to cause the upper cover of fixing on the division board also can move about, not only make the upper cover connect unstablely, still can cause the abnormal sound simultaneously, influence the use.

The mounting structure can also lead the fixing of the upper cover to depend on the isolation plate, and the upper cover cannot be fixed after the scheme of the isolation plate is cancelled in the future.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the aim at of this application provides a battery module and is connected unstable problem with top cap and electric core among the solution correlation technique.

In order to achieve the above object, the present application provides a battery module, which includes:

a housing;

the battery core assembly comprises a plurality of battery core units, the battery core units are sequentially arranged in the shell along the length direction of the shell, and each battery core unit is provided with a plurality of buckles;

the top cover is arranged on the shell in a covering mode, a plurality of positioning holes are formed in the top cover, and the positioning holes are in clamping fit with the buckles in a one-to-one correspondence mode.

In some embodiments, each of the above snaps comprises:

the lower end of the buckle body is connected to the top end of the battery cell unit;

the umbrella-shaped elastic piece is sleeved at the top end of the buckle body and penetrates through the positioning hole to be clamped with the positioning hole.

In some embodiments, the top cover is provided with a positioning hole and a sinking groove, and the elastic member passes through the positioning hole and then is clamped with the bottom wall of the sinking groove.

In some embodiments, the upper end surface of the battery cell unit is provided with two insulating parts and two poles, and each insulating part is sleeved on one pole;

each battery cell unit is provided with two buckles, and each buckle is connected to one insulation part.

In some embodiments, the electric core assembly comprises:

the isolation plate is arranged between the battery cell unit and the top cover, and is provided with a plurality of through holes for the insulation part to pass through;

the plurality of cell units are connected in series or in parallel through the plurality of bar pieces, and each bar piece is connected between a positive pole column of one cell unit and a negative pole column of the other cell unit in two adjacent cell units.

In some embodiments, the electric core assembly further includes two bus bars, one end of each bus bar is connected to one of the poles not connected to the bus bar, and the other end of each bus bar extends out of the housing.

In some embodiments, the outer edge of the isolation plate is provided with two avoidance grooves for avoiding the busbar.

In some embodiments, the housing includes:

two side plates arranged in parallel with each other;

and two ends of each end plate are respectively connected with the end parts of the two side plates, and the opposite sides of the two end plates are respectively connected with the adjacent cell units.

In some embodiments, the cell units are bonded to the end plates and the side plates by a thermally conductive adhesive.

In some embodiments, two ends of each of the two side plates are provided with an arc portion, and each of the side plates is sleeved with the end portions of the two end plates through the arc portion.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a battery module, electric core subassembly includes a plurality of electric core units that pile up along the horizontal direction of casing, upper end at every electric core unit sets up a plurality of buckles, a plurality of locating holes are seted up perpendicularly to relevant position on the top cap, the joint cooperation through buckle and locating hole, be connected top cap and a plurality of electric core unit buckle, through directly setting up the buckle on every electric core unit, make the top cap can be directly with electric core unit connection, and connect more stably, it connects the top cap on the division board to have solved traditional battery module, and the division board presss from both sides and establishes between piece and electric core subassembly, cause the unstable problem of being connected of top cap and electric core subassembly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a front view of a battery module provided by the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic structural view of the buckle of FIG. 1;

fig. 4 is a schematic structural view of the cell unit of fig. 1;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is an enlarged view of a portion of A in FIG. 5;

fig. 7 is a schematic view illustrating the cooperation between the top cap and the electric core assembly of the battery module according to the present invention.

Reference numerals:

1. a housing; 11. a side plate; 111. an arcuate portion; 12. an end plate;

2. an electrical core assembly; 21. a cell unit; 211. an insulating section; 212. a pole column; 22. buckling; 221. a buckle body; 222. an elastic member; 23. a separator plate; 24. a tablet; 25. a bus bar;

3. a top cover; 31. and (7) positioning the holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

As shown in fig. 1 and fig. 2, an embodiment of the present application provides a battery module, which includes a housing 1, a battery cell assembly 2, and a top cover 3, where the housing 1 is a rectangular frame structure, and the battery cell assembly 2 is disposed in the housing 1; the battery core assembly 2 includes a plurality of battery cell units 21, which are sequentially arranged in the casing 1 along the length direction of the casing 1, and the casing 1 is completely filled with the battery cell units, and a plurality of buckles 22 are disposed on the top end of each battery cell unit 21.

The top cover 3 is covered on the housing 1 to seal the upper end of the housing 1, a plurality of positioning holes 31 are formed in the top cover 3, and the positioning holes 31 are in one-to-one correspondence with the buckles 22 and are in clamping fit with the buckles.

In the present embodiment, the plurality of cell units 21 are arranged in sequence along the length direction of the casing 1, and the length of the casing 1 is greater than the width thereof. The dimensions of the cover 3 are adapted to the dimensions of the housing 1 so that the cover 3 together with the housing 1 can fix the electrical core assembly 2 in the housing.

As shown in fig. 3, each of the clips 22 optionally includes a clip body 221 and an umbrella-shaped elastic member 222, a lower end of the clip body 221 is connected to a top end of the battery cell 21, the elastic member 222 is sleeved on the top end of the clip body 221, and the elastic member 222 can pass through the positioning hole 31 and be clamped with the positioning hole 31.

Preferably, the latch body 221 and the elastic member 222 are integrally formed.

It can be understood that the maximum outer dimension of the elastic member 222 is larger than the aperture of the positioning hole 31, so that when the elastic member 222 is located in the positioning hole 31, the inner wall of the positioning hole 31 generates a force on the elastic member 222 to draw toward the buckle body 221, and when the elastic member 222 passes through the positioning hole 31, the inner wall of the positioning hole 31 does not contact the elastic member 222 to restore the elastic member 222 to the original state, so as to be retained in the positioning hole 31.

Furthermore, a position of the top cover 3 where the positioning hole 31 is opened with a sinking groove, so that the elastic member 222 passes through the positioning hole 31 and then is engaged with the bottom wall of the sinking groove.

A sinking groove is formed on the outer side of the positioning hole 31, so that the elastic piece 222 passes through the positioning hole 31 and then is clamped with the bottom wall of the sinking groove, and when the length of the buckle body 221 is smaller than the thickness of the top cover 3, the top end of the elastic piece 222 does not exceed the upper end surface of the top cover 3; when the length of the buckle body 221 is greater than the thickness of the top cover 3, the top end of the elastic member 222 is higher than the upper end surface of the top cover 3, so that the length of the buckle body 221 can be set according to actual needs.

As shown in fig. 4 to 7, in this embodiment, the above-mentioned buckle 22 can also be a hook, and the hook portion thereof passes through the positioning hole 31 to be buckled with the top cover 3.

Further, as shown in fig. 4 to fig. 6, two insulating portions 211 and two pole posts 212 are disposed on an upper end surface of each of the battery cell units 21, each of the insulating portions 211 is sleeved on one of the pole posts 212, two of the buckles 22 are disposed on each of the battery cell units 21, and each of the buckles 22 is connected to an upper end surface of one of the insulating portions 211.

The position of the pole 212 disposed on the battery cell unit 21 may be any region of the upper end surface, and the insulating portion 211 is sleeved on the pole 212, so that the insulating portion 211 is located around the pole 212, and therefore the two insulating portions 211 may not interfere with each other, and may also be connected to each other. The two buckles 22 are respectively connected to the two insulation parts 211, so that the connection between the buckle 22 and the battery cell unit 21 is firmer and safer.

In this embodiment, the two poles 212 are symmetrically disposed on the upper end surface of the battery cell unit 21, the two buckles 22 are respectively connected to the two insulation portions 211, and the two buckles 22 are symmetrically disposed with respect to each other.

In other embodiments, the snap 22 may be disposed between the two poles 212 or at other positions on the insulating portion 211. It can be understood that, by arranging the two buckles 22 at the two ends of the upper end surface of the battery cell unit 21 as much as possible, when the two buckles are in clamping connection with the top cover 3, the sealing performance of the top cover 3 on the battery cell unit 21 is better.

Further, as shown in fig. 2, the core assembly 2 further includes a partition plate 23 and a plurality of bars 24, the partition plate 23 is disposed between the core unit 21 and the top cover 3, and the partition plate 23 is provided with a plurality of through holes through which the insulating portions 211 pass.

The plurality of the above-mentioned bars 24 are disposed between the above-mentioned partition plate 23 and the above-mentioned top cover 3 to form a laminated structure of the top cover 3, the bars 24, the partition plate 23, and the cell units 21 from top to bottom, the plurality of the above-mentioned cell units 21 are connected through the above-mentioned bars 24, so that the plurality of cell units 21 are connected in series or in parallel, each bar 24 is connected between the positive pole post of one of the two adjacent cell units 21 and the negative pole post of the other cell unit, so as to connect the different pole posts of the two cell units 21 together, and the partition plate 23 separates the part of the bar 24 not connected with the pole post 212, so as to prevent the occurrence of short circuit and other problems.

It can be understood that the material of the bus bar 24 is copper, iron or other alloy, and the bus bar 24 can be connected with the poles 212 of two adjacent cell units 21 by welding, so as to connect the plurality of cell units 21 in the cell assembly 2 in parallel or in series to form a conducting loop.

Further, as shown in fig. 2, the battery assembly 2 further includes two bus bars 25, one end of each of the two bus bars 25 is connected to one of the poles 212 that is not connected to the bus bar 24, and the other end of each of the two bus bars 25 extends outward from the housing 1, that is, one bus bar 25 is connected to one of the positive poles of the battery units 21 that is not connected to the bus bar 24, and the other bus bar 25 is connected to the other negative pole of the battery units 21 that is not connected to the bus bar 24, so as to output the positive and negative poles of the battery assembly 2 outward and supply power to the device.

Further, as shown in fig. 2, two avoidance grooves for avoiding the bus bars 25 are further formed at corresponding positions on the outer edge of the partition plate 23, and the bus bars 25 are engaged in the avoidance grooves so that the two bus bars 25 do not interfere with the partition plate 23.

Preferably, the bus bar 25 is a zigzag structure, and is composed of two parallel transverse plates and a vertical plate connecting the two transverse plates, wherein one transverse plate is connected to the pole 212 near the other transverse plate, and the other end extends out of the housing 1, so that the vertical plate and the other transverse plate are both located outside the housing 1 and are used for connecting a wire to supply power to equipment.

Alternatively, the bus bar 25 may have a straight or L shape, and the shape is not limited as long as one end is connected to the pole 212 and the other end is located outside the housing 1.

Further, as shown in fig. 2, the housing 1 includes two side plates 11 and two end plates 12, the two side plates 11 are disposed in parallel, two ends of each end plate 12 are respectively connected to the ends of the two side plates 11, and opposite sides of the two end plates 12 are respectively connected to adjacent cell units 21, so that the two side plates 11 and the two end plates 12 form a rectangular frame structure, and a plurality of cell units 21 are disposed therein.

Further, the cell unit 21 is bonded to the end plate 12 and the side plate 11 by a heat conductive adhesive, so that the connection between the cell unit 21 and the side plate 11 and the end plate 12 is more stable.

In specific implementation, according to actual conditions, two adjacent battery cell units 21 may be bonded together by using a heat-conductive adhesive, so as to increase the stability between the battery cell units 21. By using the heat conductive adhesive, heat generated by the cell unit 21 during use can be better conducted, and the cell unit 21 can be protected.

Further, as shown in fig. 2, two ends of the two side plates 11 are provided with arc-shaped portions 111, and each of the side plates 11 is sleeved with the end portions of the two end plates 12 through the arc-shaped portions 111.

It can be understood that, in actual use, the battery module is installed in the overall structure as a power supply device for other components, and the two ends of the side plate 11 are provided with the arc-shaped portions 111, so that the connection between the side plate 11 and the end plate 12 can form an arc-shaped chamfer, thereby preventing the shell 1 from being in contact with or generating relative displacement with other adjacent components, and avoiding abrasion to other components.

Further, the housing 1 is a plastic housing, and the top cover 3 is a plastic top cover.

It can be understood that casing 1 and top cap 3 all adopt the plastics material, not only can alleviate the dead weight of whole battery module to because plastics have the ability that certain deformation was resumeed, the inflation's that generates heat problem appears when using in reply electric core unit 21 that can be better.

The utility model discloses a theory of operation does: arrange a plurality of electric core units 21 in proper order and place in casing 1, through a plurality of piece 24 with two adjacent electric core units 21 just, negative pole post links together, and keep apart the part of being connected with utmost point post 212 with division board 23 with piece 24 not, avoid appearing the short circuit scheduling problem, rethread busbar 25 draws forth the battery module just, the negative pole, use as the power supply with the battery module, locate the top cap 3 lid again on electric core subassembly 2, through the cooperation of the buckle on the electric core unit 21 and the draw-in groove joint on the top cap 3, make top cap 3 stable connection on a plurality of electric core units 21, ensure the stability of top cap 3.

In the battery module of the embodiment, the battery cell unit is clamped and matched with the top cover by directly arranging the buckle on the battery cell unit instead of the partition plate, so that the problem of unstable connection between the top cover and the battery cell unit is solved; the buckle is arranged to be provided with the buckle body and the elastic piece, so that the connection between the top cover and the battery cell unit is more stable; the problem that the battery module wears other parts is solved by arranging the connecting part of the shell into an arc shape; the side plates and the end plates of the shell are bonded with the battery cell units through the heat-conducting adhesive, so that the stability between the battery cell units is better.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A battery module, characterized in that it includes:

a housing (1);

the battery core assembly (2) comprises a plurality of battery cell units (21), the battery cell units (21) are sequentially arranged in the shell (1) along the length direction of the shell (1), and each battery cell unit (21) is provided with a plurality of buckles (22);

the top cover (3) is covered on the shell (1), a plurality of positioning holes (31) are formed in the top cover (3), and the positioning holes (31) are in one-to-one corresponding clamping fit with the buckles (22).

2. The battery module according to claim 1, wherein each of the snaps (22) comprises:

the lower end of the buckle body (221) is connected to the top end of the battery cell unit (21);

the umbrella-shaped elastic piece (222) is sleeved at the top end of the buckle body (221), and the elastic piece (222) penetrates through the positioning hole (31) and is clamped with the positioning hole (31).

3. The battery module according to claim 2, wherein:

the top cover (3) is provided with a sinking groove at the position where the positioning hole (31) is formed, and the elastic piece (222) penetrates through the positioning hole (31) and then is clamped with the bottom wall of the sinking groove.

4. The battery module according to claim 1, wherein:

the upper end face of the battery cell unit (21) is provided with two insulating parts (211) and two pole columns (212), and each insulating part (211) is sleeved on one pole column (212);

each battery cell unit (21) is provided with two buckles (22), and each buckle (22) is connected to one insulation part (211).

5. The battery module according to claim 4, wherein the cell assembly (2) comprises:

the isolation plate (23) is arranged between the battery cell unit (21) and the top cover (3), and a plurality of through holes for the insulation part (211) to pass through are formed in the isolation plate (23);

the multiple bus bars (24) are arranged between the isolation plate (23) and the top cover (3), the multiple cell units (21) are connected through the bus bars (24) so that the multiple cell units (21) are connected in series or in parallel, and each bus bar (24) is connected between the positive pole of one cell unit and the negative pole of the other cell unit in two adjacent cell units (21).

6. The battery module according to claim 5, wherein:

the electric core assembly (2) further comprises two bus bars (25), one end of each bus bar (25) is connected with one pole (212) which is not connected with the bus piece (24), and the other end of each bus bar (25) extends out of the shell (1).

7. The battery module according to claim 6, wherein:

two avoiding grooves for avoiding the busbar (25) are formed on the outer edge of the isolation plate (23).

8. The battery module according to claim 1, wherein the case (1) comprises:

two side plates (11) arranged in parallel with each other;

two end plates (12), wherein two ends of each end plate (12) are respectively connected with the ends of the two side plates (11), and the opposite sides of the two end plates (12) are respectively connected with the adjacent cell units (21).

9. The battery module according to claim 8, wherein:

the battery cell unit (21) is bonded to the end plate (12) and the side plate (11) through a heat-conducting adhesive.

10. The battery module according to claim 8, wherein:

two the both ends of curb plate (11) all are equipped with arc portion (111), every curb plate (11) pass through arc portion (111) and two the tip of end plate (12) cup joints.

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