CN218769819U - Battery module and battery box - Google Patents

Abstract

The utility model provides a battery module and battery box, battery module includes: the battery box is provided with an installation cavity and comprises a base plate and a heat radiating piece; the battery cell is arranged in the installation cavity; wherein, the radiating piece install in the base plate in order with the base plate centers on jointly the installation cavity, and be for at least one electricity core heat dissipation, the utility model discloses an install the radiating piece in the base plate to set up around the installation cavity jointly with the base plate, make the radiating piece as the partly effect in order to play the enhancement battery box of battery box, thereby improve the more weak technical problem of structural strength of battery box.

Description

Battery module and battery box

Technical Field

The utility model relates to a battery technology field specifically relates to a battery module and battery box.

Background

In recent years, with the rapid development of new energy industries, lithium batteries have great progress in both productivity and use cost. The battery box can play the role of protecting the battery core, fixing the battery core and bearing the battery core as the basic unit of the battery module, however, the structure of the battery box of the battery module in the related art has the problem of weak strength.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a battery module and battery box, the structure that can improve the battery box of battery module has the technical problem that intensity is more weak.

In a first aspect, an embodiment of the present invention provides a battery module, including:

the battery box is provided with an installation cavity and comprises a base plate and a heat radiating piece; and

the battery cell is arranged in the mounting cavity;

the heat dissipation part is installed on the substrate to surround the installation cavity together with the substrate, and is used for dissipating heat of at least one battery cell.

In an embodiment, the heat dissipation member includes two cold pipes disposed oppositely, the two cold pipes are mounted on two side portions of the substrate to surround the mounting cavity together with the substrate, the battery box further includes at least one cold plate, two end portions of each cold plate are respectively connected to the two cold pipes, and the cold plates are further connected to the corresponding battery cores.

In an embodiment, each cold pipe is provided with an accommodating cavity, each cold plate is provided with a cold cavity, the cold cavities are communicated with the two accommodating cavities, and the accommodating cavities and the cold cavities are used for accommodating cooling media to dissipate heat of the battery core.

In an embodiment, a fixing hole communicating with the accommodating chamber is formed in a side wall of each of the cold tubes facing the cold plate, two end portions of at least one of the cold plates are each provided with a communicating member, and the two communicating members are fixed in the two fixing holes, so that the cold chamber of at least one of the cold plates is communicated with the accommodating chambers of the two cold tubes through the two communicating members.

In an embodiment, the cold plate is disposed between two adjacent electric cores.

In an embodiment, the battery box further includes two end plates, the two end plates are connected to two ends of the base plate to surround the installation cavity together with the base plate and the two cold pipes, each of the end plates is at least provided with an opening, and the two openings communicate with the accommodating cavities of the two cold pipes.

In an embodiment, a side of the substrate facing away from the battery cell is provided with a reinforcing rib.

In an embodiment, the battery further includes a thermal conductive adhesive, and the thermal conductive adhesive is connected between the substrate and at least one of the battery cells.

In an embodiment, the battery box includes a bottom plate, the bottom plate is disposed opposite to the substrate and is connected to the heat dissipation member so as to surround the mounting cavity together with the substrate and the heat dissipation member, and at least one electrode of the battery cell faces the bottom plate.

In a second aspect, an embodiment of the present invention provides a battery box, the battery box is provided with a mounting cavity for mounting the battery core, and comprises:

a substrate;

at least one cold plate; and

the heat dissipation part is arranged on the substrate and used for dissipating heat of the battery cell;

the heat radiation piece comprises two cold pipes which are arranged oppositely, the two cold pipes are arranged at two side parts of the substrate to surround the installation cavity together with the substrate, two end parts of each cold plate are respectively connected with the two cold pipes, and the cold plates are further connected with the corresponding battery cores.

The utility model discloses a beneficial effect of embodiment:

the utility model discloses an in the embodiment, through installing the radiating piece in the base plate to set up around the installation cavity jointly with the base plate, make the effect of radiating piece partly in order to play the enhancement battery box as the battery box, thereby improved the more weak technical problem of structural strength of battery box.

Drawings

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

Fig. 1 is an exploded schematic view of a perspective view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a battery module provided in an embodiment of the present invention, without showing end plates;

fig. 3 is a schematic diagram of a cross-sectional view of a side of a battery module according to an embodiment of the present invention;

FIG. 4 is an enlarged partial schematic view at A of FIG. 1;

fig. 5 is a schematic view of a cold plate provided by an embodiment of the present invention;

fig. 6 is a schematic view of an embodiment of the present invention providing a communication member;

fig. 7 is a schematic view of a substrate provided by an embodiment of the present invention;

fig. 8 is a partially enlarged schematic view at B of fig. 7;

fig. 9 is a partially enlarged schematic view at C of fig. 7;

fig. 10 is a schematic view of a first aluminum row provided by an embodiment of the present invention;

fig. 11 is a schematic view of a second aluminum row according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention. Furthermore, it is to be understood that the description herein of specific embodiments is for purposes of illustration and explanation only and is not intended to limit the present disclosure. In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means upper and lower in the actual use or operation of the device, and specifically, the direction of the drawing in the drawings; while "inner" and "outer" are with respect to the outline of the device.

An embodiment of the utility model provides a battery module, there is the technical problem that intensity is more weak in the structure of the battery box that can improve battery module.

An embodiment of the utility model provides a battery module, as shown in fig. 1, battery module includes battery box 100 and an at least electric core 200, be equipped with installation cavity 109 in battery box 100, at least one electric core 200 install in installation cavity 109. It can be understood that the battery cell 200 may be fixedly installed in the installation cavity 109, or may be movably installed in the installation cavity 109. When the battery cell 200 is fixedly mounted in the mounting cavity 109, it may be fixedly connected to only one side of the mounting cavity 109, or may be fixedly connected to multiple sides of the mounting cavity 109 at the same time. The fixed connection may be a direct connection or an indirect connection.

The battery case 100 includes a substrate 101 and a heat sink 102. The heat dissipation member 102 is mounted on the substrate 101, and the heat dissipation member 102 and the substrate 101 together surround the mounting cavity 109 and perform a heat dissipation function for at least one of the battery cells 200.

In the embodiment of the present invention, the heat dissipation member 102 is installed on the substrate 101, and is disposed around the installation cavity 109 together with the substrate 101, so that the heat dissipation member 102 serves as a part of the battery box 100 to reinforce the battery box 100, thereby improving the technical problem of the battery box 100 that has weaker structural strength.

In some embodiments, the heat dissipating member 102 includes two cold pipes 1021, and the two cold pipes 1021 are installed at two sides of the substrate 101 and are oppositely arranged to surround the installation cavity 109 together with the substrate 101. It is understood that the two cold pipes 1021 can be installed at two opposite sides of the base plate 101, or can be installed at two adjacent sides of the base plate 101, as long as the two cold pipes 1021 and the base plate 101 can surround the installation cavity 109. In this embodiment, the cold pipes 1021 are installed at two opposite sides of the base plate 101.

In some embodiments, the battery box 100 further includes at least one cold plate 103, and both ends of each cold plate 103 are respectively connected to the two cold tubes 1021. Each of the cold plates 103 is disposed between two of the cold tubes 1021, and is connected to the two cold tubes 1021. The cold plate 103 is further connected to the corresponding battery cell 200, and may be configured to provide a heat dissipation function for the battery cell 200. Illustratively, the cold plate 103 is in contact with the battery cell 200 to dissipate heat in a contact manner. The cold plate 103 may also be used to fix the battery cell 200.

It is understood that the two cold pipes 1021 are installed at both sides of the base plate 101 as a part of the battery box 100. Also, the cold plate 103 is connected between the two cold tubes 1021, which is equivalent to being in the form of a "beam" in the battery box 100. Therefore, both the cold plate 1021 and the cold plate 103 can play a role in reinforcing the structural strength of the battery box 100, and the cold plate 103 and the cold plate 1021 can be matched with each other, so that the structural strength of the battery box 100 is further increased.

In some embodiments, the shape of the mounting cavity 109 may be defined by the two cold tubes 1021 and the base plate 101. That is, the mounting cavity 109 is defined by the two cold pipes 1021, the base plate 101, and other side plates or structures of the battery box 100.

In some embodiments, the two cold tubes 1021 may be parallel and opposite to each other, or there may be an included angle between the two cold tubes 1021.

In some embodiments, the cold tubes 1021 are mounted to both sides of the base plate 101. For example, the cold pipe 1021 can be fixedly connected to the base plate 101 by means of screw threads or bolts, or by means of snap fit, or by means of gluing, welding, etc. In addition, the cold pipe 1021 may be integrally formed with the substrate 101, for example, the cold pipe 1021 and the substrate 101 are formed by casting with the same film, and the cold pipe 1021 and the substrate 101 are formed by press molding based on the same material.

It is understood that when the cold pipe 1021 and the substrate 101 are integrally formed, the cold pipe 1021 as a part of the battery box 100 can be used to reinforce the structural strength of the battery box 100.

In some embodiments, as shown in fig. 2, 3, and 4, to enhance the heat dissipation effect of the cold tubes 1021 and the cold plate 103, the cold tubes 1021 and the cold plate 103 may form a cooling pathway. Illustratively, each of the cold tubes 1021 is provided with a receiving cavity 10212, and each of the cold plates 103 is provided with a cold cavity (not shown) which connects the two receiving cavities 10212 to form the cooling passage. The accommodating cavity 10212 and the cold cavity accommodate a cooling medium, and the cooling medium can further enhance the heat dissipation effect of the battery cell 200. The cooling medium includes liquid, such as water and oil, and gas, such as nitrogen and argon.

In the above embodiment, the accommodating cavity 10212 of the cold pipe 1021 and the cold cavity of the cold plate 103 form the cooling passage, and the cooling passage is filled with a cooling medium. The cooling medium circulates in the cooling passage, so that the heat exchange efficiency and the heat dissipation efficiency are improved, and the heat dissipation effect of the battery cell 200 is enhanced.

In some embodiments, since the cold chamber and the accommodating chamber 10212 are communicated with each other to form the cooling path, there may be a risk of leakage at the communication position, so as to affect the safety of the battery cell 200, and thus the accommodating chamber 10212 may be used for accommodating not only the cooling medium but also a part of the cold plate 103. As shown in fig. 3, a portion of the cold plate 103 is located within the cold tubing 1021, i.e., the connection between the receiving cavity 10212 and the cold cavity is located within the receiving cavity 10212. Therefore, the communication part and the battery cell 200 are located in different spaces, and even if the communication part is damaged and leaked, there is no risk of affecting the battery cell 200.

In some embodiments, as shown in fig. 4 and 5, the sidewall of each of the cold tubes 1021 facing the cold plate 103 is provided with a fixing hole 10211 communicating with the accommodating cavity 10212, and both ends of at least one of the cold plates 103 are provided with a communicating member 1031. The two communication members 1031 are fixed in the two fixing holes 10211, so that the cold chamber of at least one of the cold plates 103 is communicated with the accommodating chamber 10212 of the two cold tubes 1021 through the two communication members 1031.

As shown in fig. 6, the communication member 1031 includes a fixing portion 10311 and a communication portion 10312. The fixing part 10311 is fixed in the fixing hole 10211, and the fixing part 10311 has a cavity body communicated with the cold cavity of the cold pipe 1021. The communication part 10312 is provided at an end of the fixing part 10311 facing the accommodating chamber 10212, and the communication part 10312 also has a cavity. The cavity of the communication part 10312 is communicated with the accommodating cavity 10212 and the cavity of the fixing part 10311, so that the accommodating cavity and the cold cavity are communicated to form the cooling passage.

In some embodiments, the fixing portion 10311 and the fixing hole 10211 are matched in shape to ensure that the cooling medium does not leak from between the fixing portion 10311 and the fixing hole 10211. Alternatively, a sealing material is disposed at the connection position of the fixing portion 10311 and the fixing hole 10211, and it is understood that the above two designs can be combined with each other.

In some embodiments, the fixing portion 10311 is welded or snapped to the fixing hole 10211.

In some embodiments, as shown in fig. 1, in order to improve the heat dissipation efficiency of the battery cell 200, the contact area between the battery cell 200 and the cold plate 103 may be increased. For example, one cold plate 103 is disposed between two adjacent battery cells 200, so that two sides of the cold plate 103 are in contact with two adjacent battery cells 200, and one opposite side of each battery cell 200 is in contact with the corresponding cold plate 103. Further, two adjacent cold plates 103 may also limit the battery cell 200 located between the two cold plates 103.

In some embodiments, the battery box 100 further includes two end plates 104, and the two end plates 104 are connected to two ends of the base plate 101 to surround the installation cavity 109 together with the base plate 101 and the two cold pipes 1021. It is understood that the mounting cavity 109 can be formed by the two end plates 104, the two cold tubes 1021, and the base plate 101.

In order to exchange heat between the cold tubes 1021 and the cooling liquid in the cold plate 103, each of the end plates 104 has an opening 1041, and the two openings 1041 communicate with the accommodating cavities 10212 of the two cold tubes 1021. The openings 1041 of one of the end plates 104 serve as an input port for the cooling medium, and the openings 1041 of the other end plate 104 serve as an output port for the cooling medium, so that the cooling passage formed by the cold tubes 1021 and the cold plates 103 can exchange heat with the outside.

In some embodiments, two openings 1041 are formed on each of the end plates 104, and the two openings 1041 are respectively communicated with the accommodating cavities 10212 of the two cold pipes 1021. The two holes 1041 on one of the end plates 104 are used as input ports of the accommodating cavities 10212 of the two cold pipes 1021, and the two holes 1041 on the other end plate 104 are used as discharge ports of the accommodating cavities 10212 of the two cold pipes 1021, so that each cold pipe 1021 has an input port and a discharge port, and the heat exchange efficiency is increased.

In some embodiments, the two end plates 104 are fixedly connected to the base plate 101 and the cold pipe 1021. The fixed connection mode comprises welding, clamping connection and threaded connection.

In some embodiments, as shown in fig. 1 and 8, the base plate 101 is also provided with a plurality of cooling pipes 1011, and the two end plates 104 are provided with a plurality of openings (not shown) communicated with the plurality of cooling pipes 1011. In this way, the substrate 101 may also be used for circulating the cooling medium, so that, in addition to the fast heat dissipation rate of the cold pipes 1021 on the two sides of the battery box 100, the top of the battery box 100 also has a good heat dissipation effect, and thus, heat can be dissipated to the multiple sides of the battery cell 200.

In some embodiments, the side of the substrate 101 facing away from the battery cell 200 is provided with a reinforcing rib 1012 to enhance the strength of the structure of the substrate 101, as shown in fig. 7 and 9. The plurality of ribs 1012 may be in the form of a bar having an i-shaped cross-section. A plurality of the ribs 1012 are disposed in parallel. In order to ensure strength uniformity, a plurality of reinforcing ribs 1012 are uniformly arranged on the side of the substrate 101 facing away from the battery cells 200.

In some embodiments, the plurality of ribs 1012 may be integrally formed with the substrate 101, such as by casting, stamping, etc.

In some embodiments, the battery box 100 includes a bottom panel 105. The base plate 105 is disposed opposite to the base plate 101 and is coupled to the heat sink 102 to surround the mounting cavity 109 together with the base plate 101 and the heat sink 102. The bottom plate 105 is fixedly connected to the end plate 104 and the cold pipe 1021, and the bottom plate 105 is welded to the end plate 104 and the cold pipe 1021. It will be appreciated that the mounting chamber 109 is defined by the base plate 101, the cold pipe 1021, the end plate 104 and the bottom plate 105.

In some embodiments, as shown in fig. 1, a thermal conductive adhesive is disposed between the substrate 101 and the battery cell 200. The thermal conductive adhesive is used for connecting the substrate 101 and the battery cell 200 and for transferring heat of the battery cell 200 to the substrate 101, so that heat of one side surface of the battery cell 200, which is close to the substrate 101, can be quickly taken away by the substrate 101.

In some embodiments, a thermally conductive adhesive is disposed between the cold plate 103 and the battery cell 200. The heat conducting glue can be used for heat conduction between the cold plate 103 and the battery cell 200 and can be used for fixing the cold plate 103 and the battery cell 200, so that the cold plate 103 can play a role in bearing the weight of the battery cell 200.

In some embodiments, the thermal conductive paste between the plurality of battery cells 200 and the substrate 101 may be connected to each other to form a full-surface thermal conductive paste layer 106. Therefore, the heat conducting glue can play a role in increasing the structure of the battery box 100 while playing a role in connection and heat dissipation.

It is understood that the thermal conductive paste is disposed between the substrate 101 and the battery cell 200, and between the cold plate 103 and the battery cell 200, so that the substrate 101 and the cold plate 103 can serve to fix the battery cell 200. The base plate 101 and the cold plate 103 can be used to bear the weight of the battery cell 200. Since the cold plate 103 is connected to the cold tube 1021 as a part of the battery box 100, the strength of the structure of the battery box 100 may be enhanced. Thus, the cold tube 1021 and the substrate 101 may carry the weight of the battery cell 200, i.e., the battery cell 200 may be secured within the battery box 100 without the floor 105 bearing the weight of the battery cell 200. Thus, in some embodiments, the battery cell 200 may be disposed in the battery box 100 in an inverted manner, that is, one end of the battery cell 200, which is provided with the terminal, is disposed toward the bottom plate 105, so that the explosion-proof valve of the battery cell 200 can be disposed toward the bottom plate 105, and high-temperature gas generated by the battery cell 200 during thermal runaway is prevented from being ejected into the cabin of a member of an automobile.

In some embodiments, both ends of the battery cell 200 facing the cold pipe 1021 abut against the cold pipe 1021 to further secure the battery cell 200 in the battery box 100. A buffer may be filled between the battery cell 200 and the cold pipe 1021, and a person skilled in the art may set a suitable buffer, such as foam, based on actual needs.

In some implementations, since the substrate 101 and the cold plate 103 can be used to carry the mass of the battery cell 200, and since the cold tube 1021 is a part of the battery box 100, and the cold plate 103 is connected to the cold tube 1021, the strength of the structure of the battery box 100 can be enhanced. Therefore, the weight of the battery cells 200 can be carried by the cold tubes 1021 and the substrate 101, and the battery cells 200 can be fixed in the battery box 100 without the bottom plate 105 bearing the weight of the battery cells 200, so that the battery box 100 can not adopt the existing manner of carrying the weight of the battery cells 200 at the bottom. Therefore, the substrate 101 may be fixed to the top of the cavity for mounting the battery box 100, so that the space on the top of the battery box 100 is saved, and the space utilization rate is improved.

In some embodiments, based on the above derivation, the battery box 100 can not adopt the existing manner of bottom loading the weight of the battery cells 200, and therefore, the requirement of the thickness of the bottom plate 105 can be reduced, for example, the thickness of the bottom plate 105 can be set to 0.5-1.5mm, such as 0.5mm, 0.7mm, 1.5mm. The material of the bottom plate 105 may be steel, aluminum, or composite material.

In some embodiments, a cavity for an exhaust channel is formed between the poles of adjacent battery cells 200, so that gas generated when the battery cells 200 are thermally out of control can be exhausted.

In some embodiments, as shown in fig. 1, 10 and 11, the battery module includes a plurality of aluminum bars, and each aluminum bar is used to connect the terminals of two battery cells 200, so that the battery cells 200 are connected in series. The aluminum bars include a first aluminum bar 1071 and a second aluminum bar 1072, where the first aluminum bar 1071 is disposed between two adjacent battery cells 200, so as to electrically connect a positive electrode of one battery cell 200 of the two adjacent battery cells 200 with a negative electrode of the other battery cell 200, thereby implementing series connection of the two adjacent battery cells 200. When four rows of the battery cells 200 are arranged in the battery box 100 from left to right, the first aluminum row 1071 connects two rows of the battery cells 200 located on the left side and two rows of the battery cells 200 located on the right side in series respectively to form two sub-battery core groups. The second aluminum row 1072 connects two of the electric subcore groups in series.

In some embodiments, a thermal conductive paste is disposed between each first aluminum row 1071 and the bottom plate 105, and the first aluminum row 1071 is fixedly connected to the bottom plate 105 through the thermal conductive paste. As shown in fig. 1, a plurality of the first aluminum rows 1071 are connected to each other by the corresponding heat conductive paste to form the heat conductive paste 108.

In some implementations, as shown in fig. 9, a raised portion 10711 is provided in the middle of each of the first aluminum rows 1071. The protruding portion 10711 may be clamped between the two battery cells 200 to limit the first aluminum row 1071. The bulge 10711 may be flattened by the cell 200 in some scenarios to increase the length of the aluminum row in the length and/or width direction.

In one embodiment, the thermally conductive adhesive includes at least one of polyurethane, epoxy, and acrylic.

An embodiment of the utility model also provides a battery box 100, battery box 100 has installation cavity 109 that is used for installing electric core 200. The battery box 100 includes a substrate 101, at least one cold plate 103, and a heat sink 102, where the heat sink 102 is mounted on the substrate 101 and configured to dissipate heat from the battery cells 200. The heat sink 102 includes two cold pipes 1021 arranged oppositely, and the two cold pipes 1021 are mounted on two sides of the substrate 101 to surround the mounting cavity 109 together with the substrate 101. Two end portions of each cold plate 103 are respectively connected to the two cold tubes 1021, and the cold plate 103 is further connected to the corresponding electrical core 200.

In some embodiments, the cold tubes 1021 are mounted to both sides of the base plate 101. For example, the cold pipe may be fixedly mounted on the substrate 101 by means of a screw or a bolt, or by means of a snap fit, or by means of gluing, welding, or the like. The cold pipe 1021 and the substrate 101 may also be integrally formed, for example, the cold pipe 1021 and the substrate 101 are formed by casting with the same film, or the cold pipe 1021 and the substrate 101 are formed by press molding based on the same material.

In some embodiments, a sidewall of each of the cold tubes 1021 facing the cold plate 103 is provided with a fixing hole 10211 communicating with the accommodating cavity 10212. Both ends of at least one of the cold plates 103 are provided with communication members 1031. The two communication members 1031 are fixed in the two fixing holes 10211, so that the cold chamber of at least one of the cold plates 103 is communicated with the accommodating chamber 10212 of the two cold tubes 1021 through the two communication members 1031.

The embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained in detail herein by using specific embodiments, and the description of the embodiments above is only used to help understand the method and core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be some changes in the specific implementation and application scope, and to sum up, the content of the present specification should not be understood as a limitation to the present invention.

Claims (10)

1. A battery module, comprising:

the battery box is provided with an installation cavity and comprises a base plate and a heat radiating piece; and

the battery cell is arranged in the mounting cavity;

the heat dissipation part is mounted on the substrate to surround the mounting cavity together with the substrate, and is used for dissipating heat of at least one battery cell.

2. The battery module according to claim 1, wherein the heat dissipation member includes two opposite cold pipes, the two cold pipes are mounted on two sides of the substrate to surround the mounting cavity together with the substrate, the battery box further includes at least one cold plate, two ends of each cold plate are respectively connected to the two cold pipes, and the cold plates are further connected to the corresponding battery cores.

3. The battery module according to claim 2, wherein each cold pipe is provided with a containing cavity, each cold plate is provided with a cold cavity, the cold cavities are communicated with the containing cavities, and the containing cavities and the cold cavities are used for containing cooling media to dissipate heat of the battery core.

4. The battery module according to claim 3, wherein each of the cold tubes has a fixing hole formed in a side wall thereof facing the cold plate to communicate with the receiving cavity, and at least one of the two end portions of the cold plate has a communicating member fixed therein, so that the cold cavity of the at least one cold plate is communicated with the receiving cavity of the at least one cold tube via the two communicating members.

5. The battery module according to claim 3, wherein the cold plate is disposed between two adjacent battery cores.

6. The battery module according to claim 5, wherein the battery box further comprises two end plates, the two end plates are connected to two ends of the base plate to surround the mounting cavity together with the base plate and the two cold tubes, each of the end plates is provided with at least one opening, and the two openings communicate with the receiving cavities of the two cold tubes.

7. The battery module according to any one of claims 1 to 6, wherein the side of the substrate facing away from the battery core is provided with a reinforcing rib.

8. The battery module according to any one of claims 1 to 6, further comprising a thermally conductive adhesive coupled between the substrate and at least one of the cells.

9. The battery module according to any one of claims 1 to 6, wherein the battery box comprises a bottom plate, the bottom plate is disposed opposite to the substrate and is connected to the heat dissipation member so as to surround the mounting cavity together with the substrate and the heat dissipation member, and a pole of at least one of the battery cells faces the bottom plate.

10. A battery box, characterized in that, the battery box has a mounting cavity for mounting a battery core, the battery box includes:

a substrate;

at least one cold plate; and

the heat dissipation part is arranged on the substrate and used for dissipating heat of the battery cell;

the heat radiation piece comprises two cold pipes which are arranged oppositely, the two cold pipes are arranged at two side parts of the substrate to surround the installation cavity together with the substrate, two end parts of each cold plate are respectively connected with the two cold pipes, and the cold plates are further connected with the corresponding battery cores.

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