CN215644731U - Module of battery pack and battery pack - Google Patents

Abstract

The utility model discloses a battery pack module and a battery pack, wherein the battery pack module comprises: the base is provided with an accommodating space, the accommodating space is provided with a width direction and a length direction, the distance between the side walls of the accommodating space at the two ends of the width direction is a first value, and the distance between the side walls of the accommodating space at the two ends of the length direction is a second value; multirow electricity core, multirow electricity core are established in accommodation space, and multirow electricity core includes first row electricity core and end row electricity core, and the maximum distance between the terminal surface of first row electricity core and end row electricity core on the width direction equals with the first value, and every row of electricity core sets gradually along length direction, and the maximum distance of every row of electricity core between length direction's terminal surface equals with the second value. According to the utility model, by setting the first value and the second value, the surplus space is omitted, the overall size is reduced, the weight is reduced, and the use requirement of the zero-expansion battery cell is met.

Description

Module of battery pack and battery pack

Technical Field

The utility model relates to the technical field of battery packs, in particular to a battery pack module and a battery pack.

Background

At present the battery package can take place the inflation when charging, thereby the designer considers the expanded problem of battery package when designing the battery package and makes battery package inner space surplus, but this kind of space surplus both causes the big, the big problem of weight of overall dimension of battery package, causes the waste in space again, can't satisfy current requirement.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a battery pack module which can improve the space utilization rate, reduce the whole size and reduce the weight.

The utility model also provides a battery pack applying the module, which improves the space utilization rate, reduces the whole size and reduces the weight.

A battery pack module according to an embodiment of the present invention includes: the base is provided with an accommodating space, the accommodating space is provided with a width direction and a length direction, the distance between the side walls of the accommodating space at the two ends of the width direction is a first value, and the distance between the side walls of the accommodating space at the two ends of the length direction is a second value; multirow electric core, multirow electric core is established in the accommodation space, the multirow electric core is followed width direction sets gradually, the multirow electric core includes first row electric core and last row electric core, first row electric core with last row electric core is in maximum distance between the ascending terminal surface of width direction with first value equals, every row electric core is in maximum distance between the ascending terminal surface of length direction with the second value equals.

According to the module of the battery pack, the first value is equal to the maximum distance between the end faces of the first row of battery cells and the last row of battery cells in the width direction, the second value is equal to the maximum distance between the end faces of each row of battery cells in the length direction, surplus space is omitted, the overall size is reduced, the weight is reduced, and the use requirement of the zero-expansion battery cells is met.

In some embodiments, a cross beam is arranged in the accommodating space, the cross beam extends in the width direction, the battery cells are arranged on two opposite sides of the cross beam, and the cross beam is connected with the battery cells and the battery cells in an abutting mode.

Specifically, the base includes: the side plates are connected with the bottom plate and surround the bottom plate, two ends of the cross beam are respectively connected with two opposite sides of the side plate, and the cross beam extends in the depth direction of the accommodating space and is connected with the bottom plate.

More specifically, a confluence groove and a sampling groove are arranged on the bottom plate, the confluence groove extends along the length direction, a confluence avoidance hole is defined between the confluence groove and the cross beam, and a sampling avoidance hole is defined between the sampling groove extends along the length direction and the cross beam; the module of battery package still includes: the bus bar is established converge in the groove and wear to locate converge and dodge the hole, the sampling is arranged and is established in the sampling groove and wear to locate the hole is dodged in the sampling.

Optionally, the thickness of the busbar is T1, and the thickness of the base plate is T2, wherein the ratio of T2 to T1 is greater than 2.0.

In other specific embodiments, the height of the side plate is H1, and the height of the battery cell is H2, wherein 1/3 × H2 is not less than H1 is not less than H2.

Specifically, the wall thickness of the side plate is T3, wherein T3 is more than or equal to 1mm and less than or equal to 3 mm.

In some embodiments, a longitudinal beam is arranged in the accommodating space, the longitudinal beam extends along the length direction, the battery cells are arranged on two opposite sides of the longitudinal beam, and the longitudinal beam is connected with the battery cells and the battery cells in an abutting mode.

In some embodiments, the base comprises: the side plates are connected with the bottom plate and surround the bottom plate, two ends of the longitudinal beam are connected with two opposite sides of the side plate, and the longitudinal beam extends in the depth direction of the accommodating space and is connected with the bottom plate.

A battery pack according to an embodiment of the present invention includes: the lower shell is provided with a module space; the module of the battery pack is arranged in the module space; and the upper shell is arranged on the lower shell to seal the module space.

According to the battery pack provided by the embodiment of the utility model, the first value is equal to the distance between the end faces of the two rows of outermost battery cells in the multiple rows of battery cells, and the second value is equal to the distance between the end faces of the two ends in each row of battery cells, so that the surplus space is omitted, the overall size is reduced, the weight is reduced, and the use requirements of the zero-expansion battery cells are met.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a module of a battery pack according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base in an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.

Reference numerals:

100. a module of a battery pack;

10. a base; 11. an accommodating space; 111. a cross beam; 112. a stringer; 12. a base plate; 121. a confluence groove; 122. a sampling slot; 123. a convergence avoidance hole; 124. sampling a dodging hole; 13. a side plate;

20. an electric core; 30. a bus bar; 40. sampling rows;

1000. a battery pack; 200. a lower housing; 210. a module space; 300. and an upper housing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following describes a module 100 of a battery pack according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 1, a module 100 of a battery pack according to an embodiment of the present invention includes: base 10, multirow electricity core 20.

Be equipped with accommodation space 11 on base 10, accommodation space 11 has width direction and length direction, and the distance that is located between the lateral wall at width direction both ends of accommodation space 11 is the first value, and the distance that is located between the lateral wall at length direction both ends of accommodation space 11 is the second value.

Multirow electricity core 20 establishes in accommodation space 11, and multirow electricity core 20 sets gradually along width direction, and multirow electricity core 20 includes first row electricity core and last row electricity core, and the maximum distance between the terminal surface of first row electricity core and last row electricity core on width direction equals with the first value, and every row electricity core 20 sets gradually along length direction, and the maximum distance of every row electricity core 20 between the terminal surface on length direction equals with the second value.

For example, the width direction of the accommodating space 11 is a left-right direction, the length direction of the accommodating space 11 is a front-back direction, four rows of battery cells 20 are arranged in the accommodating space 11 along the left-right direction, and a distance between a left end surface of a left-most row of battery cells 20 and a right end surface of a right-most row of battery cells 20 is equal to a first value; each row of the battery cells 20 has 30 battery cells 20, the 30 battery cells 20 are sequentially arranged in the front-back direction, the distance between the front end surface of the battery cell 20 at the forefront side and the rear end surface of the battery cell 20 at the rearmost side is equal to the second value, the accommodating space 11 is 100% utilized through the above setting, the utilization rate of the space is improved, and compared with the zero-expansion battery cell 20 provided by the utility model, the spare space is set, so that the waste of the space is reduced.

According to the module 100 of the battery pack, the first value is equal to the maximum distance between the end faces of the first row of battery cells and the last row of battery cells in the width direction, and the second value is equal to the maximum distance between the end faces of each row of battery cells 20 in the length direction, so that the surplus space is omitted, the overall size is reduced, the weight is reduced, and the use requirement of the zero-expansion battery cells 20 is met.

As shown in fig. 2, in some embodiments, a cross beam 111 is disposed in the accommodating space 11, the cross beam 111 extends in the width direction, the battery cells 20 are disposed on two opposite sides of the cross beam 111, the cross beam 111 and the battery cells 20 are connected to each other by abutting, the strength of the base 10 is enhanced by setting the cross beam 111, and meanwhile, the accommodating space 11 is separated into a smaller space by setting the cross beam 111, so that the battery cells 20 can be conveniently placed. For example, the width direction is the left-right direction, one cross member 111 is provided in the accommodation space 11, the cross member 111 extends in the left-right direction, and the cross member 111 divides the accommodation space 11 into two spaces.

As shown in fig. 2, specifically, the base 10 includes: bottom plate 12 and curb plate 13, curb plate 13 connects bottom plate 12 and sets up around bottom plate 12, and the relative both sides of curb plate 13 are connected respectively to the both ends of crossbeam 111, and crossbeam 111 extends along accommodation space 11's depth direction and connects bottom plate 12, connects the relative both sides of curb plate 13 through the both ends that set up crossbeam 111 and further strengthens base 10's intensity, and crossbeam 111 extends along accommodation space 11's depth direction and connects bottom plate 12 and make intensity further strengthen. For example, the cross member 111 extends in the front-rear direction, the cross member 111 is connected to the side plate 13 extending forward to the front end, the cross member 111 is connected to the side plate 13 extending rearward to the rear end, and the cross member 111 extends downward to be connected to the bottom plate 12.

As shown in fig. 2, more specifically, the bottom plate 12 is provided with a bus bar groove 121 and a sampling groove 122, the bus bar groove 121 extends in the length direction and defines a bus bar avoiding hole 123 with the cross beam 111, and the sampling groove 122 extends in the length direction and defines a sampling avoiding hole 124 with the cross beam 111. The module 100 of the battery pack further includes: busbar 30 and sampling bar 40, busbar 30 is established in converging groove 121 and wears to locate and converge and dodge hole 123, and sampling bar 40 is established in sampling groove 122 and wears to locate and sample and dodge hole 124, places busbar 30 through setting up converging groove 121 on bottom plate 12, and sampling groove 122 places sampling bar 40, and busbar 30, the scheme that sampling bar 40 set up in the top of electric core 20 reduces occupation space among the prior art of comparison, reduces overall dimension.

Alternatively, the thickness of the bus bar 30 is T1, and the thickness of the bottom plate 12 is T2, wherein the ratio of T2 to T1 is greater than 2.0, and the ratio of T2 to T1 is greater than 2.0, so that enough volume is provided for the bus bar 30 to be placed in the bus groove 121, and the installation space of the bus bar 30 and the strength of the bottom plate 12 are both ensured. For example, the ratio of T2 to T1 is 2.0, or alternatively, the ratio of T2 to T1 is 3.0. Of course, the ratio of T2 to T1 may be larger, and will not be described herein.

In other specific embodiments, the height of the side plate 13 is H1, the height of the battery cell 20 is H2, wherein 1/3 × H2 is not less than H1 is not less than H2, and the arrangement of 1/3 × H2 is not less than H1 is not less than H2 improves stability and reduces waste of space. For example, 1/3 × H2 is H1, and the height of the side plate 13 enables the side plate 13 to sufficiently restrain the battery cell 20, so as to improve the stability of the battery cell 20 and avoid the side plate 13 occupying a large space; alternatively, 1/2 xh 2 ═ H1; or, H1 is equal to H2, the height of the side plate 13 makes the side plate 13 completely limit the movement of the battery cell 20, the battery cell 20 is fixed in the accommodating space 11, meanwhile, the height of the battery cell 20 is equal to the height of the side plate 13, the side plate 13 does not exceed the height of the battery cell 20, the side plate 13 does not contact with the upper casing 300, and the waste of space is reduced.

Specifically, the wall thickness of the side plate 13 is T3, wherein T3 is larger than or equal to 1mm and smaller than or equal to 3mm, and T3 is larger than or equal to 1mm and smaller than or equal to 3mm, so that the strength of the side plate 13 is improved, the space occupied by the side plate 13 is reduced, and the space utilization rate is improved. For example, T3 ═ 1 mm; alternatively, T3 ═ 2 mm; still alternatively, T3 is 3 mm.

As shown in fig. 2, in some embodiments, a longitudinal beam 112 is disposed in the accommodating space 11, the longitudinal beam 112 extends along the length direction, the battery cells 20 are disposed on two opposite sides of the longitudinal beam 112, the longitudinal beam 112 and the battery cells 20 are connected to each other by abutting, the strength of the base 10 is enhanced by disposing the longitudinal beam 112, and meanwhile, the accommodating space 11 is divided into a smaller space by disposing the longitudinal beam 112, so as to facilitate the placement of the battery cells 20. For example, the longitudinal direction is the front-rear direction, one longitudinal beam 112 is provided in the accommodation space 11, the longitudinal beam 112 extends in the front-rear direction, and the longitudinal beam 112 divides the accommodation space 11 into two spaces.

As shown in fig. 2, in some embodiments, the base 10 includes: bottom plate 12 and curb plate 13, curb plate 13 connect bottom plate 12 and set up around bottom plate 12, and the relative both sides of curb plate 13 are connected at the both ends of longeron 112, and longeron 112 extends along accommodation space 11's depth direction and connects bottom plate 12, and the intensity of base 10 is further strengthened to the relative both sides of connecting curb plate 13 through the both ends that set up longeron 112, and longeron 112 extends along accommodation space 11's depth direction and connects bottom plate 12 messenger intensity further reinforcing. For example, the longitudinal beam 112 extends in the left-right direction, the longitudinal beam 112 extends leftward to the left end of the side plate 13 and is connected to the side plate 13, the longitudinal beam 112 extends rightward to the right end of the side plate 13 and is connected to the side plate 13, and the cross beam 111 extends downward and is connected to the bottom plate 12.

In some embodiments, the base 10 is made of an insulating material, and the base 10 made of the insulating material is arranged to accommodate the battery cell 20 to improve safety. For example, the chassis 10 is made of PA66 (nylon 66), increasing strength, safety by virtue of the PA66 itself; alternatively, the base 10 is made of PBT (polybutylene terephthalate) to improve safety.

An embodiment of a battery pack module 100 according to the present invention will be described with reference to fig. 1 to 2.

A battery pack module 100 includes: base 10, electric core 20, busbar 30, sample row 40.

The base 10 includes: a bottom panel 12 and side panels 13. The side plate 13 is connected with the bottom plate 12 and arranged around the bottom plate 12, and the wall thickness of the side plate 13 is T3, and T3 is equal to 2 mm. The bottom plate 12 and the side plate 13 define an accommodation space 11, and the accommodation space 11 has a width direction and a length direction, the width direction being a left-right direction, and the length direction being a front-back direction. A cross beam 111 and a longitudinal beam 112 are arranged in the accommodating space 11, the cross beam 111 extends along the width direction, namely the cross beam 111 extends along the left-right direction, the left end and the right end of the cross beam 111 are respectively connected with two opposite sides of the side plate 13, and the cross beam 111 extends downwards along the depth direction of the accommodating space 11 and is connected with the bottom plate 12; the longitudinal beam 112 extends in the longitudinal direction, that is, the longitudinal beam 112 extends in the front-rear direction, the front and rear ends of the longitudinal beam 112 are connected to the opposite sides of the side plate 13, and the longitudinal beam 112 extends downward in the depth direction of the accommodating space 11 and is connected to the bottom plate 12. The bottom plate 12 is provided with a converging groove 121 and a sampling groove 122, the converging groove 121 extends in the front-back direction and is limited with the cross beam 111 to form a converging avoiding hole 123, and the sampling groove 122 extends in the front-back direction and is limited with the cross beam 111 to form a sampling avoiding hole 124.

Four rows of battery cells 20 are arranged in the accommodating space 11, the four rows of battery cells 20 are sequentially arranged along the left-right direction, the cross beam 111 is arranged between a group of two adjacent battery cells 20 in each row of battery cells 20, and the cross beam 111 in each row of battery cells 20 is connected with the battery cells 20 and the battery cells 20 in a butt joint manner; longeron 112 is established between two rows of adjacent electric cores 20 in four rows of electric cores 20, and the relative both sides of longeron 112 are equipped with electric core 20 among the multirow electric core 20, and between longeron 112 and electric core 20, all the butt links to each other between electric core 20 and the electric core 20. The height of the battery cell 20 is H2, the height of the side plate 13 is H1, and 1/2 × H2 is H1.

The bus bar 30 is disposed in the collecting groove 121 and penetrates through the collecting avoiding hole 123, and the sampling bar 40 is disposed in the sampling groove 122 and penetrates through the sampling avoiding hole 124. The thickness of the bus bar 30 is T1, the thickness of the bottom plate 12 is T2, and the ratio of T2 to T1 is equal to 2.0.

As shown in fig. 3, a battery pack 1000 according to an embodiment of the present invention includes: a lower case 200, a battery pack module 100, and an upper case 300.

The lower case 200 is provided with a module space 210. The module 100 of the battery pack is disposed in the module space 210. The upper case 300 is provided on the lower case 200 to enclose the module space 210.

According to the battery pack 1000 of the embodiment of the utility model, the first value is equal to the distance between the end surfaces of the two outermost rows of the battery cells 20 in the multiple rows of the battery cells 20, and the second value is equal to the distance between the end surfaces at the two ends in each row of the battery cells 20, so that the surplus space is omitted, the overall size is reduced, the weight is reduced, and the use requirements of the zero-expansion battery cells 20 of the utility model are met.

Other constructions and operations of the module 100 of the battery pack according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery pack module (100), comprising:

the base (10) is provided with an accommodating space (11), the accommodating space (11) has a width direction and a length direction, the distance between the side walls of the accommodating space (11) at the two ends of the width direction is a first value, and the distance between the side walls of the accommodating space (11) at the two ends of the length direction is a second value;

multirow electricity core (20), the multirow electricity core (20) are established in accommodation space (11), the multirow electricity core (20) are followed width direction sets gradually, the multirow electricity core (20) are including first row electricity core and last row electricity core, first row electricity core with last row electricity core is in maximum distance between the terminal surface on the width direction with first value equals, every row electricity core (20) are followed length direction sets gradually, every row electricity core (20) are in maximum distance between the terminal surface on the length direction with the second value equals.

2. The battery pack module (100) according to claim 1, wherein a cross beam (111) is disposed in the accommodating space (11), the cross beam (111) extends in the width direction, the battery cells (20) are disposed on two opposite sides of the cross beam (111), and the cross beam (111) and the battery cells (20) are connected in an abutting manner.

3. The battery pack module (100) according to claim 2, wherein the base (10) comprises: bottom plate (12) and curb plate (13), curb plate (13) are connected bottom plate (12) and center on bottom plate (12) set up, the both ends of crossbeam (111) are connected respectively the relative both sides of curb plate (13), crossbeam (111) are followed the depth direction of accommodation space (11) extends and is connected bottom plate (12).

4. The battery pack module (100) according to claim 3, wherein the base plate (12) is provided with a confluence groove (121) and a sampling groove (122), the confluence groove (121) extends along the length direction and defines a confluence relief hole (123) with the cross beam (111), and the sampling groove (122) extends along the length direction and defines a sampling relief hole (124) with the cross beam (111);

the battery pack module (100) further comprises: busbar (30) and sampling bar (40), busbar (30) are established converge in groove (121) and wear to locate converge and dodge hole (123), sampling bar (40) are established sample groove (122) is interior and wear to locate sampling dodge hole (124).

5. The battery pack module (100) of claim 4, wherein the bus bar (30) has a thickness T1 and the bottom plate (12) has a thickness T2, wherein the ratio of T2 to T1 is greater than 2.0.

6. The battery pack module (100) of claim 3, wherein the side plates (13) have a height of H1 and the cells (20) have a height of H2, wherein 1/3 × H2 ≦ H1 ≦ H2.

7. The battery pack module (100) according to claim 3, wherein the side plates (13) have a wall thickness of T3, wherein T3 is 1 mm. ltoreq.3 mm.

8. The battery pack module (100) according to claim 1, wherein a longitudinal beam (112) is arranged in the accommodating space (11), the longitudinal beam (112) extends along the length direction, the battery core (20) is arranged on two opposite sides of the longitudinal beam (112), and the longitudinal beam (112) and the battery core (20) are connected in an abutting manner.

9. The battery pack module (100) according to claim 8, wherein the base (10) comprises: bottom plate (12) and curb plate (13), curb plate (13) are connected bottom plate (12) and around bottom plate (12) set up, the both ends of longeron (112) are connected the relative both sides of curb plate (13), longeron (112) are followed the depth direction of accommodation space (11) extends and is connected bottom plate (12).

10. A battery pack (1000), comprising:

the device comprises a lower shell (200), wherein a module space (210) is arranged on the lower shell (200);

the battery pack module (100) according to any one of claims 1 to 9, the module being provided within the module space (210);

an upper case (300), the upper case (300) being provided on the lower case (200) to enclose the module space (210).

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