CN219801040U - Battery module and battery pack - Google Patents

Abstract

The utility model relates to a battery module and a battery pack, wherein the battery module comprises a heat exchange piece and a plurality of electric cores which are arranged at intervals, the heat exchange piece comprises a first liquid cooling group and a second liquid cooling group, the first liquid cooling group comprises at least two first liquid cooling pipes which are arranged at intervals, the length of each first liquid cooling pipe extends along a first direction, the second liquid cooling group comprises at least two second liquid cooling pipes which are arranged at intervals, the length of each second liquid cooling pipe extends along a second direction, the first direction and the second direction form an included angle, an accommodating space is formed between every two adjacent first liquid cooling pipes and every two adjacent second liquid cooling pipes, and the electric cores are arranged in the accommodating space. The cell of the battery module can bear larger shearing force, so that the battery pack applying the battery module has higher rigidity.

Description

Battery module and battery pack

Technical Field

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

Background

The battery pack can generate heat in the charging or discharging process, so that a liquid cooling structure is required to be arranged in the battery pack to cool and dissipate heat of each battery cell, and the battery pack is maintained at a proper temperature. At present, in some battery packs, a plurality of liquid cooling pipes are arranged in a battery box at intervals, and the length directions of all the liquid cooling pipes are consistent, in other words, all the liquid cooling pipes are arranged in parallel, and a battery cell is arranged between two adjacent liquid cooling pipes so as to cool and assist in fixing the battery cell through the liquid cooling pipes. The prior art has the following technical defects: because all liquid cooling pipes are parallel arrangement, the shearing force that the battery cell can bear along being on a parallel with liquid cooling pipe length direction is less, when receiving the external force effect, the battery cell is easy to remove relative liquid cooling pipe to make there is the clearance between battery cell and the liquid cooling pipe, thereby reduce the liquid cooling effect of liquid cooling pipe to the battery cell.

Disclosure of Invention

One object of an embodiment of the utility model is to: the battery module is simple in structure, good in liquid cooling effect and capable of bearing larger shearing force.

Another object of an embodiment of the utility model is to: the battery pack is simple in structure, good in heat dissipation effect and high in rigidity.

To achieve the purpose, the embodiment of the utility model adopts the following technical scheme:

in a first aspect, a battery module is provided, including heat exchange member and a plurality of electric core that the interval was arranged, the heat exchange member includes first liquid cooling group and second liquid cooling group, first liquid cooling group includes the first liquid cooling pipe that two at least intervals set up, the length of first liquid cooling pipe extends along first direction, the second liquid cooling group includes that two at least intervals set up the second liquid cooling pipe, the length of second liquid cooling pipe extends along the second direction, first direction with the second direction is the contained angle setting, adjacent two first liquid cooling pipe with adjacent two form accommodation space between the second liquid cooling pipe, the electric core sets up in the accommodation space.

As a preferred embodiment of the battery module, the first direction and the second direction are disposed vertically.

As a preferred scheme of the battery module, all the first liquid-cooled tubes are arranged at intervals along the second direction, and all the second liquid-cooled tubes are arranged at intervals along the first direction.

As a preferred scheme of the battery module, the first liquid cooling group and the second liquid cooling group are arranged at intervals along a third direction, and the third direction is respectively perpendicular to the first direction and the second direction at intervals.

As a preferred embodiment of the battery module, each of the accommodation spaces is provided with one of the battery cells.

As a preferred scheme of the battery module, the first liquid cooling pipes are provided with a plurality of first liquid cooling grooves along the first direction at intervals, and at least one of the adjacent two first liquid cooling pipes forms part of the accommodating space.

As a preferred scheme of the battery module, a plurality of second liquid cooling grooves are formed in the second liquid cooling pipe at intervals along the second direction, the notch of each second liquid cooling groove of two adjacent second liquid cooling pipes is opposite to each other, and the two second liquid cooling grooves which are opposite to each other jointly form part of the accommodating space.

As a preferred scheme of the battery module, a heat conduction structural adhesive is arranged between the battery cell and the first liquid cooling pipe; and/or a heat conduction structural adhesive is arranged between the battery cell and the second liquid cooling pipe.

As a preferable mode of the battery module, a region of the circumferential side wall of the battery cell, which is not in contact with the first liquid-cooled tube and the second liquid-cooled tube, is a heat insulation region, and the heat insulation region is provided with the heat insulation member.

As a preferred scheme of the battery module, the contact area of the first liquid-cooled tube and the circumferential side wall of the single battery cell is S1, the contact area of the second liquid-cooled tube and the circumferential side wall of the single battery cell is S2, and the area of the circumferential side wall of the battery cell is S3,1/3×s3 < s1+s2 < 1/2×s3.

As a preferred scheme of the battery module, the battery cell is a cylindrical battery cell; the first liquid cooling pipes are provided with a plurality of first liquid cooling grooves at intervals along the first direction, the groove walls of the first liquid cooling grooves are wrapped on the side walls of the electric cores, and the wrapping angle of the first liquid cooling grooves on the electric cores is 180 degrees; and/or the number of the groups of groups,

the second liquid cooling pipes are provided with a plurality of second liquid cooling grooves along the second direction at intervals, the groove walls of the second liquid cooling grooves are wrapped on the side walls of the electric cores, and the wrapping angle of the second liquid cooling grooves on the electric cores is 60 degrees.

In a second aspect, a battery pack is provided, including a battery box and the battery module described above, where the battery module is disposed in the battery box.

The embodiment of the utility model has the beneficial effects that: the length extending direction of the first liquid cooling pipe of the first liquid cooling group and the length extending direction of the second liquid cooling pipe of the second liquid cooling group of the battery module are arranged at an included angle, so that two adjacent liquid cooling pipes can be staggered to form an accommodating space for setting an electric core between the first liquid cooling pipes and the second liquid cooling pipes, the electric core is arranged in the accommodating space, and the first liquid cooling pipes and the second liquid cooling pipes can limit the side wall of the electric core so as to increase the shearing force between the electric core and the heat exchange piece, thereby increasing the rigidity of the battery module.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a battery module according to an embodiment of the present utility model.

Fig. 2 is a schematic view of a first view structure of a heat exchange member according to an embodiment of the present utility model.

Fig. 3 is a schematic view of a second view structure of a heat exchange member according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a first liquid cooling set according to an embodiment of the utility model.

Fig. 5 is a schematic structural diagram of a second liquid cooling set according to an embodiment of the present utility model.

In the figure:

1. a heat exchange member; 11. a first liquid cooling group; 111. a first liquid-cooled tube; 1111. a first liquid cooling tank; 12. a second liquid cooling group; 121. a second liquid-cooled tube; 1211. a second liquid cooling tank; 13. an accommodation space; 2. and a battery cell.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only 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 fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The battery pack can generate heat in the charging or discharging process, so that a liquid cooling structure is required to be arranged in the battery pack to cool and dissipate heat of each battery cell, and the battery pack is maintained at a proper temperature. At present, in some battery packs, a plurality of liquid cooling pipes are arranged in a battery box at intervals, and the length directions of all the liquid cooling pipes are consistent, in other words, all the liquid cooling pipes are arranged in parallel, and a battery cell is arranged between two adjacent liquid cooling pipes so as to cool and assist in fixing the battery cell through the liquid cooling pipes. The prior art has the following technical defects: because all liquid cooling pipes are parallel arrangement, the shear force that the battery cell can bear along being on a parallel with liquid cooling pipe length direction is less, when receiving the external force effect, the battery cell is easy relative liquid cooling pipe removal to make there is the clearance between battery cell and the liquid cooling pipe, never reduced the liquid cooling effect of liquid cooling pipe to the battery cell.

In order to solve the above technical problems, as shown in fig. 1 to 3, the present utility model provides a battery module, which comprises a heat exchange member 1 and a plurality of electric cores 2 arranged at intervals, wherein the heat exchange member 1 comprises a first liquid cooling group 11 and a second liquid cooling group 12, the first liquid cooling group 11 comprises at least two first liquid cooling pipes 111 arranged at intervals, the length of each first liquid cooling pipe 111 extends along a first direction, the second liquid cooling group 12 comprises at least two second liquid cooling pipes 121 arranged at intervals, the length of each second liquid cooling pipe 121 extends along a second direction, the first direction and the second direction form an included angle, an accommodating space 13 is formed between two adjacent first liquid cooling pipes 111 and two adjacent second liquid cooling pipes 121, and the electric cores 2 are arranged in the accommodating space 13. The length extending direction of the first liquid cooling pipe 111 of the first liquid cooling group 11 of the battery module and the length extending direction of the second liquid cooling pipe 121 of the second liquid cooling group 12 are arranged at an included angle, so that the adjacent two first liquid cooling pipes 111 and the adjacent two second liquid cooling pipes 121 can be staggered to form an accommodating space 13 for arranging the battery cell 2, the battery cell 2 is arranged in the accommodating space 13, the first liquid cooling pipe 111 and the second liquid cooling pipe 121 can limit the side wall of the battery cell 2, the shearing force between the battery cell 2 and the heat exchange piece 1 is increased, and the rigidity of the battery module is increased, so that the battery cell 2 is prevented from being subjected to external force and relative movement with the liquid cooling pipes.

It can be appreciated that the length direction of the first liquid cooling tube 111 and the length direction of the second liquid cooling tube 121 are disposed at an included angle, so that the first liquid cooling tube 111 and the second liquid cooling tube 121 are staggered to form a grid-like structure, when the battery cell 2 is acted by external force, the battery cell 2 can be limited in multiple directions due to the special arrangement of the first liquid cooling tube 111 and the second liquid cooling tube 121, so as to improve the size of the battery cell 2 capable of bearing shearing force in multiple directions.

In the coordinate system of the drawing, the X-axis is directed in the first direction, the Y-axis is directed in the second direction, and the Z-axis is directed in the third direction.

The number of the first liquid cooling pipes 111 and the second liquid cooling pipes 121 may be two, three, four or other numbers according to practical requirements. And the number of the first liquid cooling pipes 111 and the second liquid cooling pipes 121 may be equal or different.

In this embodiment, the first direction and the second direction are vertically arranged, in other words, the length direction of the first liquid-cooled tube 111 and the length direction of the second liquid-cooled tube 121 are vertically arranged, all the first liquid-cooled tubes 111 are arranged at intervals along the second direction, all the second liquid-cooled tubes 121 are arranged at intervals along the first direction, so that a similar "well" arrangement is formed between the first liquid-cooled tube 111 and the second liquid-cooled tube 121, and the accommodating space 13 formed by the structure is convenient for placing the battery cell 2 and increases the transverse and longitudinal shearing force of the battery cell 2. In other embodiments, the first direction and the second direction may be disposed at an acute angle or an obtuse angle, which is not limited to the embodiment.

In other embodiments, the first direction and the second direction are disposed at an acute angle, all the first liquid-cooled tubes 111 are spaced apart along the fourth direction, and all the second liquid-cooled tubes 121 are spaced apart along the fifth direction, wherein the fourth direction is perpendicular to the first direction, and the fifth direction is perpendicular to the second direction.

Specifically, the first liquid cooling group 11 and the second liquid cooling group 12 are arranged along a third direction at intervals, the third direction is respectively perpendicular to the first direction and the second direction at intervals, in other words, the interval directions of the first liquid cooling group 11 and the second liquid cooling group 12 are respectively perpendicular to the length directions of the first liquid cooling pipe 111 and the second liquid cooling pipe 121, and when the battery cell 2 is arranged in the accommodating space 13, the first liquid cooling group 11 and the second liquid cooling group 12 can cool the upper part and the lower part of the battery cell 2, and the cooling uniformity is higher. In addition, the first liquid cooling group 11 and the second liquid cooling group 12 can cool the same battery cell 2, and the cooling area is large, so that the battery module has a good cooling effect. When the battery cell 2 is a cylindrical battery cell, the axial direction of the battery cell 2 is consistent with the third direction.

The first liquid cooling tube 111 and the second liquid cooling tube 121 are staggered, but staggered in two dimensions, and the two tubes are not directly contacted or connected.

In this embodiment, set up multiunit electric core group along the second direction, every electric core group includes along first direction interval setting a plurality of electric cores 2, in two adjacent group electric core groups, two adjacent electric cores 2 dislocation set, this design can reduce the clearance between the electric core 2 to increase battery module's energy density.

Preferably, each accommodating space 13 is provided with one electric core 2, so that each electric core 2 can be in contact with the liquid cooling pipe to have larger area and better heat dissipation effect. In addition, the design is equivalent to that any two adjacent battery cells 2 are separated by a liquid cooling pipe, so that heat transfer between the battery cells 2 and the battery cells 2 is reduced, and the phenomenon of thermal runaway of the battery module is prevented.

In some embodiments, as shown in fig. 4, the first liquid cooling pipes 111 are provided with a plurality of first liquid cooling grooves 1111 at intervals along the first direction, and the first liquid cooling groove 1111 of at least one first liquid cooling pipe 111 of two adjacent first liquid cooling pipes 111 forms part of the accommodating space 13. The cell wall of the first liquid cooling groove 1111 is attached to the side wall of the battery cell 2, so as to increase the contact area between the battery cell 2 and the first liquid cooling tube 111, thereby increasing the heat dissipation effect of the first liquid cooling tube 111 on the battery cell 2.

Specifically, two adjacent first liquid cooling grooves 1111 are located on opposite sides of the first liquid cooling tube 111, so that two sides of the first liquid cooling tube 111 can radiate different battery cells 2 at the same time, the structure of the battery module is more compact, and the cooling efficiency of the battery cells 2 is increased. In other embodiments, the first liquid cooling duct 111 is provided with the first liquid cooling tank 1111 on only one side.

Preferably, the first liquid cooling groove 1111 is formed by bending the first liquid cooling pipe 111, and the bending forms the first liquid cooling groove 1111 to make the thickness of each position of the first liquid cooling pipe 111 equal, which is beneficial to ensuring that the heat exchange efficiency of each position of the first liquid cooling pipe 111 is the same as that of the battery core 2. And the first liquid cooling pipes 111 are in a wave structure, in the wave structure, a first liquid cooling groove 1111 is formed in one side surface of each first liquid cooling pipe 111, liquid cooling protrusions are arranged at positions, corresponding to the first liquid cooling grooves 1111, of the two adjacent first liquid cooling pipes 111, and the first liquid cooling groove 1111 of one first liquid cooling pipe 111 is opposite to the liquid cooling protrusions of the other first liquid cooling pipe 111. In this embodiment, the first liquid cooling tank 1111 and the side wall of the liquid cooling protrusion together form a part of the accommodating space 13. In other embodiments, of the two adjacent first liquid cooling pipes 111, the first liquid cooling grooves 1111 of the two first liquid cooling pipes 111 are disposed opposite to each other, wherein the two first liquid cooling grooves 1111 together form part of the accommodating space 13.

In this embodiment, as shown in fig. 5, the second liquid cooling tubes 121 are provided with a plurality of second liquid cooling grooves 1211 along the second direction at intervals, the notches of the second liquid cooling grooves 1211 of two adjacent second liquid cooling tubes 121 are opposite, the two second liquid cooling grooves 1211 which are opposite to each other together form a part of accommodating space 13, and the same battery cell 2 is wrapped by the two second liquid cooling grooves 1211 at the same time, so that the contact area between the battery cell 2 and the second liquid cooling tubes 121 is increased, and the heat dissipation effect of the battery cell 2 is improved.

Specifically, two adjacent second liquid cooling grooves 1211 are located on two opposite sides of the second liquid cooling tube 121, so that the same second liquid cooling tube 121 can radiate heat from two groups of electric core groups, the heat radiation effect is good, the number of the second liquid cooling tubes 121 can be reduced, and the structure of the battery module is more compact. In other embodiments, the second liquid cooling pipe 121 may be provided with the second liquid cooling tank 1211 only at one side.

Preferably, the second liquid cooling groove 1211 is formed by bending the second liquid cooling tube 121, so that the second liquid cooling tube 121 is also wavy, and the bending to form the first liquid cooling groove 1111 can make the thickness of each position of the first liquid cooling tube 111 equal, which is beneficial to ensuring that the heat exchange efficiency of each position of the first liquid cooling tube 111 is the same as that of the battery cell 2.

In an embodiment, a heat-conducting structural adhesive (not shown in the drawings) is disposed between the battery cell 2 and the first liquid-cooled tube 111 to increase the contact tightness between the battery cell 2 and the first liquid-cooled tube 111, so as to improve the heat exchange effect between the battery cell 2 and the first liquid-cooled tube 111.

In another embodiment, a heat-conducting structural adhesive is disposed between the electric core 2 and the second liquid cooling tube 121 to increase the tightness of contact between the electric core 2 and the second liquid cooling tube 121, so as to improve the heat exchange effect between the electric core 2 and the second liquid cooling tube 121, and also improve the shearing force between the electric core 2 and the second liquid cooling tube 121.

In a preferred embodiment, a heat-conducting structural adhesive is disposed between the battery cell 2 and the first liquid cooling tube 111 and the second liquid cooling tube 121, so as to further improve the shearing force of the battery cell 2 and the heat exchange effect between the battery cell 2 and the liquid cooling tube.

In one embodiment, the battery module further includes a heat insulating member (not shown in the drawings), and the region of the circumferential side wall of the battery cells 2, which is not in contact with the first and second liquid-cooled tubes 111 and 121, is a heat insulating region provided with the heat insulating member to prevent thermal diffusion between the battery cells 2. It will be appreciated that the cells 2 are cylindrical cells 2, a curved triangular space is formed between adjacent three cells 2, and the heat insulating member is disposed between the curved triangular spaces to prevent thermal diffusion between the cells 2.

It should be noted that, other shapes of space, such as four-deformation, pentagon or other structures, may be formed between two or more cells 2, and the curvature triangle space in this embodiment is a space structure formed by specific arrangement of each cell 2.

Preferably, the heat insulating member is a foaming glue, and the foaming glue is a glue with bonding property, so that the shearing force of the battery cell 2 can be further increased by arranging the foaming glue in the curvature triangle space, thereby increasing the rigidity of the battery pack. In addition, the foaming glue has the foaming characteristic so as to be convenient to fill into the curvature triangle space.

In this embodiment, as shown in fig. 2, the first liquid-cooled tube 111 and the second liquid-cooled tube 121 are flat tubes, and the widths of the first liquid-cooled tube 111 and the second liquid-cooled tube 121 extend along the third direction, and the sides of the first liquid-cooled tube 111 and the second liquid-cooled tube 121 arranged along the thickness direction are in contact with the electric core 2, where the contact area of the first liquid-cooled tube 111 and the circumferential side wall of the single electric core 2 is S1, the contact area of the second liquid-cooled tube 121 and the circumferential side wall of the single electric core 2 is S2, the area of the side wall of the electric core 2 is S3,1/3×s3 < s1+s2 < 1/2×s3, that is, s1+s2 is between one third S3 and one half S3. In this range, a sufficient contact area between the battery cell 2 and the liquid cooling tube can be ensured, so that the battery cell 2 has higher heat exchange efficiency. Preferably s1+s2=5/12×s3, that is, s1+s2 is equal to five-tenth S3, and in this design, the design is consistent with ensuring that the battery module is compact in structure and that there is enough contact area between the battery cell 2 and the liquid cooling tube, so that the battery cell 2 has higher heat exchange efficiency.

Specifically, the electric core 2 is a cylindrical electric core 2, so the first liquid cooling groove 1111 is an arc groove adapted to the circumferential side wall of the cylindrical battery, the groove wall of the first liquid cooling groove 1111 is wrapped on the circumferential side wall of the electric core 2, which is beneficial to heat exchange between the electric core 2 and the first liquid cooling plate, and the wrapping angle of the first liquid cooling groove 1111 to the electric core 2 is 180 degrees;

specifically, the groove wall of the second liquid cooling groove 1211 is wrapped on the circumferential side wall of the electric core 2, so that the second liquid cooling pipe 121 is beneficial to exchanging heat with the electric core 2, and the wrapping angle of the second liquid cooling groove 1211 on the electric core 2 is 60 degrees. Since the same cell 2 has two second liquid cooling pipes 121 for heat dissipation, the walls of the two second liquid cooling grooves 1211 are wrapped on the side wall of the same cell 2, so that the wrapping angle of the second liquid cooling pipes 121 on the cell 2 is 120 °.

Of course, in other embodiments, the wrapping angle of the first liquid cooling tank 1111 on the battery cell 2 may be any other angle, for example, 60 °, 80 °, 100 °, 120 °, 135 °, 140 °, 145 °, or the like. The wrapping angle of the second liquid cooling tank 1211 on the battery cell 2 may be other angles, for example, 30 °, 40 °, 45 °, 50 °, 80 °, 90 °, 120 °, 180 °, or the like.

In a preferred embodiment, the circumferential side wall of the battery core 2 is respectively configured as a first area and a second area along the axial direction of the battery core 2, and the areas of the first area and the second area are equal, where the first liquid cooling tube 111 is attached to the first area, the second liquid cooling tube 121 is attached to the second area, the wrapping angle of the first liquid cooling groove 1111 to the battery core 2 is 180 °, the wrapping angle of the second liquid cooling groove 1211 to the battery core 2 is 60 °, when the widths of the first liquid cooling tube 111 and the second liquid cooling tube 121 are equal, s1+s2=5/12×s3, and the designs of the first liquid cooling tube 111 and the second liquid cooling tube 121 meet the layout requirement of the battery core 2 by adopting a staggered arrangement, so that not only can the energy density of the battery module be improved, but also the heat dissipation capability of the battery can be improved.

In an embodiment, unlike the arrangement of the battery cells 2 in other embodiments, all the battery cells 2 are arranged in a matrix, and all the first liquid cooling tubes 111 of the first liquid cooling group 11 are designed to have the structure of the second liquid cooling tube 121 in the above embodiment, so that the same battery cell 2 has two first liquid cooling slots 1111 to wrap the battery cells 2. Or, all the second liquid cooling pipes 121 of the second liquid cooling group 12 are set to be in the structure of the first liquid cooling pipe 111, so that the upper part and the lower part of the battery cell 2 are provided with liquid cooling grooves with larger wrapping angles to wrap the battery cell 2, and the liquid cooling effect is improved.

The utility model discloses a battery pack, which comprises a battery box and a battery module in any embodiment, wherein the battery module is arranged in the battery pack, and the battery module is arranged by forming an included angle between the length direction of a first liquid cooling pipe 111 and the length direction of a second liquid cooling pipe 121, so that an accommodating space 13 for arranging a battery cell 2 is formed between two adjacent first liquid cooling pipes 111 and two adjacent second liquid cooling pipes 121 in a staggered manner, and the battery cell 2 is arranged in the accommodating space 13, so that the first liquid cooling pipe 111 and the second liquid cooling pipe 121 can limit the battery cell 2 in the radial direction, thereby increasing the shearing force between the battery cell 2 and a heat exchange piece 1, further increasing the rigidity of the battery module, and further increasing the overall rigidity of the battery pack and the liquid cooling effect.

In the description herein, it should be understood that the terms "upper," "lower," and the like are used for convenience in description and simplicity of operation only, and are not necessarily indicative or implying any particular orientation, configuration or operation of such apparatus or elements herein, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the term "an embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (12)

1. The utility model provides a battery module, includes heat exchange member and a plurality of electric core that the interval was arranged, its characterized in that, the heat exchange member includes first liquid cooling group and second liquid cooling group, first liquid cooling group includes the first liquid cooling pipe that two at least intervals set up, the length of first liquid cooling pipe extends along first direction, the second liquid cooling group includes that two at least intervals set up the second liquid cooling pipe, the length of second liquid cooling pipe extends along the second direction, first direction with the second direction is the contained angle setting, adjacent two first liquid cooling pipe with adjacent two form accommodation space between the second liquid cooling pipe, the electric core sets up in the accommodation space.

2. The battery module of claim 1, wherein the first direction and the second direction are disposed perpendicularly.

3. The battery module of claim 2, wherein all of the first liquid-cooled tubes are disposed at intervals along the second direction, and all of the second liquid-cooled tubes are disposed at intervals along the first direction.

4. The battery module of claim 1, wherein the first liquid cooling set and the second liquid cooling set are disposed at intervals along a third direction, and the third direction is disposed at intervals perpendicular to the first direction and the second direction, respectively.

5. The battery module according to claim 1, wherein one of the battery cells is provided per one of the accommodation spaces.

6. The battery module according to any one of claims 1 to 5, wherein the first liquid cooling pipes are provided with a plurality of first liquid cooling grooves at intervals along the first direction, and the first liquid cooling grooves of at least one of the adjacent two first liquid cooling pipes constitute part of the accommodation space.

7. The battery module according to any one of claims 1 to 5, wherein a plurality of second liquid cooling grooves are provided in the second liquid cooling pipe at intervals along the second direction, the notch of the second liquid cooling groove of two adjacent second liquid cooling pipes is opposite, and the two second liquid cooling grooves which are opposite to each other together form part of the accommodating space.

8. The battery module according to any one of claims 1-5, wherein a heat conductive structural adhesive is disposed between the electrical core and the first liquid cooling tube; and/or a heat conduction structural adhesive is arranged between the battery cell and the second liquid cooling pipe.

9. The battery module of any one of claims 1-5, further comprising a thermal shield, wherein the region of the peripheral side wall of the cell that is not in contact with the first and second liquid-cooled tubes is a thermal shield, the thermal shield being provided with the thermal shield.

10. The battery module of any one of claims 1-5, wherein the contact area of the first liquid-cooled tube with the circumferential side wall of a single cell is S1, the contact area of the second liquid-cooled tube with the circumferential side wall of a single cell is S2, and the area of the circumferential side wall of a cell is S3,1/3 x s3 < s1+s2 < 1/2 x S3.

11. The battery module of claim 10, wherein the cells are cylindrical cells; the first liquid cooling pipes are provided with a plurality of first liquid cooling grooves at intervals along the first direction, the groove walls of the first liquid cooling grooves are wrapped on the circumferential side walls of the electric cores, and the wrapping angle of the first liquid cooling grooves on the electric cores is 180 degrees; and/or the number of the groups of groups,

the second liquid cooling pipes are provided with a plurality of second liquid cooling grooves along the second direction at intervals, the groove walls of the second liquid cooling grooves are wrapped on the circumferential side walls of the electric cores, and the wrapping angle of the second liquid cooling grooves on the electric cores is 60 degrees.

12. A battery pack comprising a battery compartment, characterized by comprising a battery module according to any one of claims 1-11, said battery module being arranged in said battery compartment.