CN220122021U - Battery pack upper cover, battery pack box and battery pack - Google Patents

Abstract

The utility model discloses a battery pack upper cover, a battery pack box body and a battery pack, wherein the battery pack upper cover comprises a cover plate, a locking groove is formed in the cover plate, a fixing hole is formed in the locking groove and used for being abutted with a longitudinal beam in the battery pack box body, and the fixing hole is used for being connected with a connecting piece in a penetrating manner so that the cover plate is connected with the longitudinal beam in the battery pack box body; the battery pack box body comprises the battery pack upper cover and the box body, a plurality of longitudinal beams are arranged in the box body, the longitudinal beams are provided with fixedly connected holes, the space in the box body is divided into a plurality of battery cell chambers by each longitudinal beam, the lower sides of the locking grooves are abutted against the longitudinal beams, and connecting pieces are arranged between the fixing holes and the fixedly connected holes in a penetrating mode; the battery pack comprises the battery pack box body and a plurality of battery cells, and the battery cells are arranged in the battery cell chamber. Through above-mentioned setting, under the condition that does not additionally increase the part for battery package upper cover is provided with the structure of locking each other with the longeron, and then strengthens the spacing effect along the direction of height to the electric core, and the electric core takes place the displacement when avoiding the vibration.

Description

Battery pack upper cover, battery pack box and battery pack

Technical Field

The utility model relates to the technical field of battery packs, in particular to a battery pack upper cover, a battery pack box body and a battery pack.

Background

At the moment of rapid development of battery grouping technology, CTP (cell to pack) design is one of the mainstream grouping technologies due to the advantages of high energy density, high volume ratio, low cost and the like.

Because the cell module is free of constraint of the end plate, the side plate and the steel belt in the CTP battery pack, the overall stability of the cell module is poorer than that of the traditional module; meanwhile, the vibration of the battery pack along the height direction is the most common working condition in the whole vehicle running process, if the battery pack is not reliably limited in the direction, when the vibration occurs, the battery cell is inevitably displaced, and even the battery cell is in contact with other metal parts to cause short circuit and fire explosion. Therefore, the limit of the cell module in the CTP battery pack along the height direction is particularly important.

In the prior art, in order to enhance the limit along the height direction, structural members are often designed separately and placed between the battery cell module and the battery pack, and there are few designs integrated on the upper cover of the battery pack.

However, the newly added structure can lead to the weight increase of the battery pack, so that the production cost is increased, which is contrary to the original lightweight and low-cost design concept of CTP; meanwhile, the newly added structural member needs more limit designs to fix, alternating pressure is easy to generate, the stress of the battery cell module is directly unstable, and potential safety hazards exist.

Disclosure of Invention

In order to solve at least one problem in the prior art, the utility model provides a battery pack upper cover, a battery pack box body and a battery pack, which can enhance the limit effect on the battery cells along the height direction under the condition of not adding extra components.

The utility model adopts the technical proposal for solving the problems that:

battery package upper cover includes:

the cover plate is provided with a locking groove, a fixing hole is formed in the locking groove and used for being abutted against the longitudinal beam in the battery pack box body, and the fixing hole is used for being connected with the connecting piece in a penetrating mode so that the cover plate is connected with the longitudinal beam in the battery pack box body.

In some embodiments of the utility model, a fixing pin is further provided on the cover plate, and the fixing pin is used for being connected with a beam in the battery pack box body.

In particular embodiments, the retaining pin and the locking groove are both disposed on the same side of the cover plate.

In further examples, the locking groove is provided with at least two, and the fixing pin is provided between the two locking grooves.

In some embodiments of the present utility model, a pressing step is further formed on the cover plate, and the pressing step is used for limiting the displacement of the battery cells in the battery pack case.

In some embodiments of the utility model, the locking grooves are uniformly disposed on the same side of the cover plate.

In some embodiments of the utility model, the peripheral edge of the cover plate is provided with a plurality of locking holes.

A battery pack case comprising:

a battery pack upper cover as described above;

the box body is internally provided with a plurality of longitudinal beams, the longitudinal beams are provided with fixedly connecting holes, and each longitudinal beam divides the space in the box body into a plurality of battery cell chambers;

the lower side of the locking groove is abutted to the longitudinal beam, and a connecting piece is arranged between the fixing hole and the fixedly connecting hole in a penetrating mode.

In some embodiments of the utility model, the upper side of the stringers is provided with a bumper, and the lower side of the locking groove abuts the bumper and thus the stringers.

A battery pack, comprising:

the battery pack case as described above;

and the battery cells are arranged in the battery cell chamber.

In summary, the battery pack upper cover, the battery pack box body and the battery pack provided by the utility model have the following technical effects:

in the embodiment of the utility model, the locking groove is formed in the cover plate, and the fixing hole is formed in the locking groove and is used for penetrating the connecting piece to enable the cover plate to be connected with the longitudinal beam in the battery pack box body, so that the upper cover of the battery pack is provided with a structure mutually locked with the longitudinal beam under the condition that no additional part is added, the limiting effect on the battery core along the height direction is further enhanced, the displacement of the battery core during vibration is avoided, and the explosion risk existing in the battery pack is eliminated.

Drawings

Fig. 1 is a perspective view of an embodiment of a battery pack top cover of the present utility model;

FIG. 2 is a schematic view of an embodiment of a battery pack top cover according to the present utility model;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a schematic view of an embodiment of a battery pack case according to the present utility model;

FIG. 5 is an enlarged view of area B of FIG. 4;

FIG. 6 is a schematic view of an embodiment of a battery pack of the present utility model;

FIG. 7 is an enlarged view of region C of FIG. 6;

fig. 8 is an enlarged view of region D in fig. 6.

Wherein the reference numerals have the following meanings:

cover plate 1, locking groove 11, fixing hole 111, connecting piece 1111, buffer piece 1112, fixing pin 12, fixing piece 121, fixing accessory 122, pressing step 13, locking hole 14, case 2, cell chamber 20, longitudinal beam 21, fixing hole 211, cross beam 22, buffer piece 23, cell 3.

Detailed Description

For a better understanding and implementation, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the 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. 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 appreciated that 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 of the present utility model. 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.

It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used in this description of this utility model are intended to describe specific embodiments only and are not intended to limit the utility model.

According to the present utility model, as shown in fig. 1 to 3, there is provided a battery pack upper cover comprising:

the cover plate 1 is provided with a locking groove 11, a fixing hole 111 is formed in the locking groove 11, the locking groove 11 is used for being abutted against a longitudinal beam in the battery pack box body, and the fixing hole 111 is used for being connected with a connecting piece in a penetrating mode so that the cover plate 1 is connected with the longitudinal beam in the battery pack box body.

Through being provided with locking groove 11 on apron 1, be provided with fixed orifices 111 in locking groove 11 again, fixed orifices 111 are used for cross-under connecting piece so that apron 1 links to each other with the longeron in the battery package box to under the condition that does not additionally increase the part, make battery package upper cover be provided with the structure with longeron locking each other, and then strengthen the spacing effect to the battery core along the direction of height, the battery core produces the displacement when avoiding the vibration, eliminates the explosion risk that exists wherein.

In some embodiments of the present utility model, the cover plate 1 is further provided with a fixing pin 12, and the fixing pin 12 is used for being connected with a beam in the battery pack case.

Through being provided with fixed pin 12 on apron 1, fixed pin 12 is used for linking to each other with the crossbeam in the battery package box, need not additionally to increase the part, can realize battery package upper cover and crossbeam locking each other to strengthen the spacing effect to the electric core along the horizontal direction, avoid taking place the electric core lateral displacement when vibrating.

In particular embodiments, the fixing pin 12 and the locking groove 11 are both disposed on the same side of the cover plate 1.

Through all setting up fixed pin 12 and locking groove 11 in the same side of apron 1, can realize the locking to longeron and crossbeam in the battery package box in a simpler and more easy mode to avoid complicated locking operation, and play simultaneously decurrent pressure to longeron and crossbeam in the battery package box, play the effect of locking jointly, make battery package upper cover can form better spacing effect to the electric core in the battery package box.

In further examples, the locking groove 11 is provided with at least two, and the fixing pin 12 is provided between the two locking grooves 11.

In practical application, the quantity of locking groove 11 sets up according to the longeron quantity in the battery package box, and the same reason, the quantity of fixed pin 12 also sets up according to the crossbeam quantity in the battery package box, because crossbeam and longeron in the battery package box are crisscross the setting each other, this makes locking groove 11 and fixed pin 12 also need crisscross the setting each other.

In some examples, two stringers may be provided in the battery pack case, two locking grooves 11 may be provided corresponding to one stringer, so as to achieve more stable locking of the stringers, and similarly, two fixing pins 12 may be provided corresponding to one cross beam, so as to achieve more stable locking of the cross beam, so that in this example, four locking grooves 11 are provided, two fixing pins 12 are provided, and further, the fixing pins 12 are provided between the two locking grooves 11 along the length direction of the locking grooves 11.

Through foretell setting, locking groove 11 and fixed pin 12 can adapt better the setting mode that battery package box internal longitudinal beam and crossbeam crisscross each other to further promote the steadiness that battery package upper cover and battery package box are connected, with the reinforcing to the spacing effect of the electric core in the battery package box.

In some embodiments of the present utility model, the cover plate 1 is further formed with a pressing step 13, and the pressing step 13 is used to limit the displacement of the battery cells in the battery pack case.

In practical application, the inner wall of the pressing step 13 is abutted against the shoulder of the battery cell in the battery pack box body, so that downward pressure is generated on the battery cell to press the battery cell, and the fixation of the battery cell is further enhanced.

In some embodiments of the present utility model, the locking grooves 11 are uniformly arranged on the same side of the cover plate 1.

In practical application, the stringers in the battery pack case are arranged at equal intervals, and correspondingly, the locking grooves 11 are uniformly arranged on the same side of the cover plate 1 to adapt to the arrangement of the stringers.

In some embodiments of the utility model, the peripheral edge of the cover plate 1 is provided with a number of locking holes 14.

By providing the plurality of locking holes 14 at the peripheral edge of the cover plate 1, after the cover plate 1 is attached to the battery pack case, the peripheral edge of the cover plate 1 and the peripheral edge of the case can be locked by bolts or rivets, so that the cover plate 1 can be firmly attached to the battery pack case, thereby completing the assembly of the entire battery pack.

In the above embodiments and examples, under the condition that no additional component is added, the battery pack upper cover is provided with a structure which is mutually locked with the longitudinal beam and the transverse beam in the battery pack box body, so that the limit effect on the battery core along the height direction is enhanced, the displacement of the battery core during vibration is avoided, and the explosion risk existing in the battery core is eliminated.

According to fig. 4 to 5, the present utility model also provides a battery pack case comprising:

a battery pack upper cover as described above;

the box body 2, a plurality of longitudinal beams 21 are arranged in the box body 2, as shown in fig. 7, the longitudinal beams 21 are provided with a fixedly connecting hole 211, and each longitudinal beam divides the space in the box body 2 into a plurality of battery cells 20;

the lower side of the locking groove 11 abuts against the longitudinal beam 21, and the connecting piece 1111 is penetrated between the fixing hole 12 and the fixing hole 211.

In practical applications, the connection member 1111 may be configured as a bolt, which is only illustrated herein, and the connection member 1111 is not limited to be a bolt, and other components that can achieve the purpose of the present utility model are also included, and are not described in detail herein.

Specifically, the opening edge of the case 2 is provided with a corresponding attachment hole corresponding to the locking hole 14.

By applying the battery pack upper cover, the cover plate 1 and the box body 2 can be attached through a more stable structure, so that the battery pack box body with a more stable structure is realized.

As shown in fig. 7, in some embodiments of the present utility model, the upper side of the side member 21 is provided with a buffer 1112, and the lower side of the locking groove 11 abuts against the buffer 1112, thereby abutting against the side member 21.

In specific embodiments, the buffer 1112 abuts against a shoulder of the battery cell, so as to transmit the pressure after the cover plate 1 and the case 2 are locked, so as to compress the battery cell in the battery cell chamber 20, and limit the displacement of the battery cell along the height direction.

In practical applications, the buffer 1112 may be configured as foam, which is only illustrated herein, and the buffer 1112 is not limited to be foam, and other components that can achieve the purpose of the present utility model are also included, and are not described in detail herein.

Through the arrangement, the limiting effect on the battery cells in the battery cell chamber 20 is further enhanced, the sealing effect is achieved, the normal use of the battery cells is prevented from being influenced by leakage, the increase of internal stress caused by direct contact between the locking groove 11 and the longitudinal beam 21 is prevented, and the service lives of the cover plate 1 and the box body 2 are prolonged.

In some embodiments of the present utility model, as shown in fig. 6, a through hole is provided on the beam 22 corresponding to the fixing pin 12, and the fixing pin 12 and the through hole are respectively provided with a mutually matched fixing attachment 122, and then a fixing piece 121 is connected in the fixing attachment 122 in a penetrating manner, so as to lock the cover plate 1 and the beam 22.

In practical application, the fixing member 121 is configured as a locking bolt, and the fastening attachment 122 is configured as a locking nut.

In the above embodiments and examples, the limit effect of the battery pack case on the internal battery cells along the height direction is greatly improved, and the overall stability of the battery pack case is further enhanced.

According to fig. 6 to 8, the present utility model also provides a battery pack including:

the battery pack case as described above;

and a plurality of battery cells 3, wherein the battery cells 3 are arranged in the battery cell chamber 20.

In the above embodiment, by using the battery pack case, the battery cell 3 in the battery pack can be stably located in the battery cell chamber 20 without displacement in the height direction, so that the safety and stability of the battery pack are improved, and explosion caused by short circuit is avoided.

As shown in fig. 8, in some embodiments of the present utility model, a buffer 23 is provided between the upper end side of the cell 3 and the pressing step 13, so as to transmit the pressure after the cover plate 1 is locked with the case 2, to press the cell in the cell chamber 20, and limit the displacement of the cell in the height direction.

In practical applications, the buffering element 23 may be configured as foam, which is only exemplified herein, and the buffering element 23 is not limited to be foam, and other components that can achieve the purpose of the present utility model are also included, and are not described in detail herein.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. While alternative embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the scope of the embodiments of the utility model.

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

While the foregoing has been described in some detail by way of illustration of the principles and embodiments of the utility model, and while in accordance with the principles and implementations of the utility model, those skilled in the art will readily recognize that the utility model is not limited thereto.

Claims (10)

1. The battery package upper cover, its characterized in that includes:

the battery pack comprises a cover plate (1), wherein a locking groove (11) is formed in the cover plate (1), a fixing hole (111) is formed in the locking groove (11), the locking groove (11) is used for being abutted to a longitudinal beam in the battery pack box body, and the fixing hole (111) is used for penetrating a connecting piece so that the cover plate (1) is connected with the longitudinal beam in the battery pack box body.

2. The battery pack upper cover according to claim 1, wherein the cover plate (1) is further provided with a fixing pin (12), and the fixing pin (12) is used for being connected with a cross beam in the battery pack box body.

3. The battery pack cover according to claim 2, wherein the fixing pin (12) and the locking groove (11) are both provided on the same side of the cover plate (1).

4. A battery pack cover according to claim 2 or 3, wherein at least two locking grooves (11) are provided, and the fixing pin (12) is provided between the two locking grooves (11).

5. A battery pack cover according to any one of claims 1 to 3, wherein the cover plate (1) is further formed with a pressing step (13), and the pressing step (13) is used for limiting the displacement of the battery cells in the battery pack case.

6. A battery pack cover according to any one of claims 1 to 3, wherein the locking grooves (11) are uniformly arranged on the same side of the cover plate (1).

7. A battery pack top cover according to any one of claims 1 to 3, wherein the peripheral edge of the cover plate (1) is provided with a plurality of locking holes (14).

8. Battery package box, its characterized in that includes:

the battery pack cover according to any one of claims 1 to 7;

the battery pack comprises a box body (2), wherein a plurality of longitudinal beams (21) are arranged in the box body (2), the longitudinal beams (21) are provided with fixedly connecting holes (211), and each longitudinal beam (21) divides the space in the box body (2) into a plurality of battery cells (20);

the lower side of the locking groove (11) is abutted to the longitudinal beam (21), and a connecting piece (1111) is arranged between the fixing hole (111) and the fixing hole (211) in a penetrating mode.

9. The battery pack case according to claim 8, wherein a buffer (1112) is provided on the upper side of the side member (21), and the lower side of the locking groove (11) abuts against the buffer (1112) to thereby abut against the side member (21).

10. A battery pack, comprising:

the battery pack case according to claim 8 or 9;

the battery cells (3) are arranged in the battery cell chamber (20).