CN220420705U - Heating element, battery module and car - Google Patents

Abstract

The utility model provides a heating assembly, a battery module and an automobile, and relates to the technical field of automobile parts. The heating assembly comprises a middle heating unit and side heating structures, wherein the two side heating structures are respectively arranged at two sides of a battery cell unit group of the battery module along a first direction, and the battery cell unit group comprises a plurality of battery cell units distributed along the first direction; the middle heating unit is used for being arranged between two adjacent electric core units in the first direction, the middle heating unit comprises a middle heating structure and a heat insulation structure, the heat insulation structure is arranged between the two middle heating structures, and the two middle heating structures are respectively attached to the two adjacent electric core units. The heating component provided by the utility model can heat the battery cell unit at two sides of the battery cell unit along the first direction, and the mutual interference of heating among different battery cell units is avoided through the heat insulation structure, so that the uniformity of the heating temperature of the battery cells of the battery module can be improved, and the service performance of the power battery in a low-temperature environment can be improved.

Description

Heating element, battery module and car

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a heating assembly, a battery module and an automobile.

Background

With the development of new energy technology, the electric drive of automobiles has become a trend. The power battery is used as a power source of the electric automobile, and the performance of the power battery directly influences the endurance mileage of the electric automobile. Because the power battery has performance attenuation at low temperature, the power output capacity can be influenced, and in some power batteries, such as refrigerant direct-cooling power batteries, in order to meet the power output requirement, the power battery is guaranteed to be heated up at low temperature rapidly, and heating components such as heating films are used for heating the power battery, specifically, the heating films are arranged on the outer sides of the cell unit groups of the battery modules of the power battery, such as the outer sides along the first direction, so that the temperature of the power battery can be raised to a certain extent.

However, since the cell unit group includes a plurality of cell units, for example, a plurality of cell units distributed along the first direction, and each cell unit includes one or more cells sequentially distributed along the second direction, this form of heating only on the outer side is caused, and only the outer sides of the cells of the cell units located at the edge positions in the first direction can be heated better, the temperature of the cells near the middle position in the first direction is limited, the temperature uniformity of the whole cell unit group is poor, and the performance of the power battery is improved limitedly.

Disclosure of Invention

The utility model aims to solve the problems of improving the heating uniformity of the power battery and improving the service performance of the power battery at low temperature in the related technology to a certain extent.

In order to solve at least one aspect of the above problems at least to some extent, a first aspect of the present utility model provides a heating assembly, including an intermediate heating unit and side heating structures, where the two side heating structures are respectively disposed on two sides of a battery cell group of a battery module along a first direction, and the battery cell group includes a plurality of battery cells distributed along the first direction; the middle heating unit is used for being arranged between two adjacent electric core units in the first direction, the middle heating unit comprises a middle heating structure and a heat insulation structure, the heat insulation structure is arranged between the two middle heating structures, and the two middle heating structures are respectively attached to the two adjacent electric core units.

Optionally, the power density of the intermediate heating structure is less than the power density of the side heating structure.

Optionally, the power density of the intermediate heating structure is 0.8-0.95 times the power density of the side heating structure.

Optionally, the side heating structure and the middle heating structure are both metal heating films, and the metal heating films are attached to the corresponding side surfaces of the electric core units; and/or the heat insulation structure is a heat insulation sheet, and the heat insulation sheet is made of heat insulation materials.

Optionally, the intermediate heating structure includes an intermediate heating main body, and a first conductive structure and a second conductive structure located at two ends of a heating circuit on the intermediate heating main body, where the second conductive structures of the two intermediate heating structures of the same intermediate heating unit are electrically connected, and each first conductive structure is disposed near a set end of the cell unit group in a second direction, where the second direction is perpendicular to the first direction.

Optionally, the side heating structure comprises a side heating main body, and a third conductive structure and a fourth conductive structure which are positioned at two ends of a heating circuit on the side heating main body, wherein the third conductive structure is arranged close to the setting end in the second direction;

the third conductive structure is electrically connected with the first conductive structure of the intermediate heating structure adjacent in the first direction; when the number of the battery cell units distributed in the first direction is greater than or equal to three, the first conductive structures of two adjacent intermediate heating structures respectively located on different intermediate heating units in the first direction are electrically connected.

Optionally, each of the first conductive structure, the third conductive structure and the fourth conductive structure includes an electrical connection wire and a plug connector located at the end of the electrical connection wire, and connection between the corresponding conductive structures is achieved through plug connection of the plug connector;

and/or the second conductive structures are arranged close to the setting end, the two second conductive structures of the two intermediate heating structures of the intermediate heating unit are first conductive terminals, and the two first conductive terminals of the intermediate heating unit are connected through a connecting wire;

and/or the two intermediate heating structures of the intermediate heating unit are connected with the heat insulation structure in an adhesive mode or connected by adopting a connecting piece.

In a second aspect, the present utility model provides a battery module, including a battery cell unit group and the heating assembly according to the first aspect, where the battery cell unit group includes a plurality of battery cell units distributed along a first direction, two side heating structures of the heating assembly are respectively disposed on two sides of the battery cell unit group along the first direction, and an intermediate heating unit of the heating assembly is disposed between two adjacent battery cell units in the first direction.

Optionally, the battery module further includes a bottom plate and end plates, the battery cell unit group is placed on the bottom plate, the two end plates are located at two ends of the battery cell unit group along the second direction, and the two end plates are connected with the bottom plate to form a position limit of the battery cell unit group along the second direction; the end plate is provided with a clearance groove which is arranged corresponding to the middle heating unit and used for at least partial passage of the middle heating unit;

and/or the battery cell unit comprises a plurality of battery cells distributed along the second direction; the second direction is perpendicular to the first direction.

In a third aspect, the present utility model provides an automobile comprising the battery module set forth in the second aspect.

In comparison with the related prior art, in the heating assembly, the battery module and the automobile of the utility model, the two side heating structures are respectively arranged at two sides of the battery cell group of the battery module along the first direction, the first direction is taken as the front-back direction, the number of the battery cell units is two as an example, the two side heating structures are respectively arranged at two sides of the battery cell group along the front-back direction, the side heating structure at the front end is jointed with the front side surface of the battery cell at the front end, the side heating structure at the rear end is jointed with the rear side surface of the battery cell at the rear end, an intermediate heating unit is arranged between the two adjacent battery cell units along the front-back direction, the intermediate heating structure near the front end of the intermediate heating unit is jointed with the rear side surface of the battery cell at the front side of the intermediate heating unit, the middle heating structure of this middle heating unit near the rear end is laminated with the leading flank of the electric core unit that is located this middle heating unit rear side to realize the thermal-insulated between two middle heating structures of this middle heating unit through thermal-insulated structure, when setting up two electric core units in the front and back direction, make every electric core unit all have heating structure along the both sides of fore-and-aft direction through a middle heating unit and two side heating structures, the intensification of every electric core unit along the both sides of fore-and-aft direction is comparatively even, and, realize the thermal-insulated between two middle heating structures of same middle heating unit through thermal-insulated structure, can avoid two middle heating structures to form hot spot because of contact heat transfer to a certain extent, avoid influencing the homogeneity of the heating temperature between the different electric core units. The heating component provided by the utility model can heat the battery cell unit at two sides of the battery cell unit along the first direction, and the mutual interference of heating among different battery cell units is avoided through the heat insulation structure, so that the uniformity of the heating temperature of the battery cells of the battery module can be improved, the service performance of the power battery in a low-temperature environment can be improved, and the heating component is simple in structure and strong in practicability.

Drawings

Fig. 1 is a schematic view illustrating an explosion structure of a heating assembly for a battery module according to an embodiment of the present utility model;

fig. 2 is an isometric view of a heating assembly for a battery module according to an embodiment of the present utility model;

fig. 3 is a schematic top view of a heating assembly for a battery module according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of an intermediate heating unit according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an exploded structure of an intermediate heating unit in an embodiment of the present utility model;

fig. 6 is an exploded view of a side heating structure in an embodiment of the present utility model.

100-an intermediate heating unit; 110-an intermediate heating structure; 111-an intermediate heating body; 112-a first conductive structure; 120-insulating structure; 130-connecting wires; 200-side heating structure; 211-side heating the body; 212-a third conductive structure; 313-fourth conductive structure; 300-cell unit group; 310-cell units; 311-cell; 400-end plates; 410-a clearance groove.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. 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 description of the present specification, descriptions of the terms "embodiment," "one embodiment," "some embodiments," "illustratively," and "one embodiment" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or implementation of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.

The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. As such, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

The Z axis in the drawing represents vertical, i.e., up and down, and the positive direction of the Z axis (i.e., the arrow pointing to the Z axis) represents up, and the negative direction of the Z axis represents down; the X-axis in the drawing indicates the horizontal direction and is designated as the left-right position, and the positive direction of the X-axis (i.e., the arrow of the X-axis points) indicates the right side, and the negative direction of the X-axis indicates the left side; the Y-axis in the drawing indicates the front-back position, and the positive direction of the Y-axis (i.e., the arrow of the Y-axis is directed) indicates the front side, and the negative direction of the Y-axis indicates the rear side. It should also be noted that the foregoing Z-axis, Y-axis, and X-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented, configured or operated in a particular orientation, and therefore should not be construed as limiting the utility model.

As shown in fig. 1 to 6, an embodiment of the present utility model provides a heating assembly, which includes an intermediate heating unit 100 and side heating structures 200, wherein the two side heating structures 200 are respectively disposed at two sides of a battery cell unit 300 of a battery module along a first direction, and the battery cell unit 300 includes a plurality of battery cells 310 distributed along the first direction; the intermediate heating unit 100 is configured to be disposed between two adjacent battery cells 310 in the first direction, the intermediate heating unit 100 includes an intermediate heating structure 110 and a heat insulation structure 120, the heat insulation structure 120 is disposed between the two intermediate heating structures 110, and the two intermediate heating structures 110 are respectively attached to the two adjacent battery cells 310.

In fig. 1, a first direction is shown as a front-back direction, two battery cells 310 are distributed along the front-back direction, each battery cell 310 includes 14 battery cells 311 distributed along a second direction, that is, along a left-right direction, and the present utility model will be described by taking this as an example. It should be appreciated that the number of intermediate heating units 100 of the heating assembly is one less than the number of the battery cells 310 of the battery cell group 300.

In this way, in the present embodiment, the two side heating structures 200 are respectively disposed on two sides of the battery cell group 300 of the battery module along the first direction, taking the first direction as the front-back direction and the number of the battery cells 310 as two as an example, the two side heating structures 200 are respectively disposed on two sides of the battery cell group 300 along the front-back direction, the side heating structure 200 disposed at the front end is attached to the front side surface of the battery cell 310 disposed at the front end, the side heating structure 200 disposed at the rear end is attached to the rear side surface of the battery cell 310 disposed at the rear end, the middle heating unit 100 is disposed between two adjacent battery cells 310 in the front-back direction, the middle heating structure 110 near the front end of the middle heating unit 100 is attached to the rear side surface of the battery cell 310 disposed at the front side of the middle heating unit 100, the middle heating structure 110 near the rear end of the middle heating unit 100 is attached to the front side of the electric core unit 310 located at the rear side of the middle heating unit 100, and the heat insulation between the two middle heating structures 110 of the middle heating unit 100 is achieved through the heat insulation structure 120, when the two electric core units 310 are arranged in the front-rear direction, the two sides of each electric core unit 310 along the front-rear direction are provided with heating structures (the two heating structures are respectively the side heating structures 200 and the middle heating structure 110) through one middle heating unit 100 and the two side heating structures 200, when the number of the electric core units 310 is greater than three, the heating structures at the two sides of part of the electric core units 310 are all the middle heating structures 110), the temperature rise of the two sides of each electric core unit 310 along the front-rear direction is relatively uniform, and the heat insulation between the two middle heating structures 110 of the same middle heating unit 100 is achieved through the heat insulation structure 120, hot spots of the two intermediate heating structures 110 due to contact heat transfer can be avoided to a certain extent, and the uniformity of heating temperatures among different cell units 310 is prevented from being affected. The heating component provided by the utility model can heat the battery cell unit 310 at two sides of the battery cell unit 310 along the first direction, and avoid the mutual interference of heating among different battery cell units 310 through the heat insulation structure 120, and can improve the uniformity of the heating temperature of the battery cells 311 of the battery module, so that the usability of the power battery in a low-temperature environment can be improved, and the heating component is simple in structure and strong in practicability.

Optionally, the power density of the intermediate heating structure 110 is less than the power density of the side heating structure 200.

It should be understood that the heat loss is small when the middle heating structure 110 is heated, and the heat exchange loss of the side heating structure 200 is relatively large due to direct contact with air or the case of the battery module, etc.

When the vehicle is started again after traveling for a while in a low-temperature environment, for example, if the time interval is short and there is a heating demand, at this time, the temperature of the end portion of the cell unit group 300 located in the first direction is reduced faster, and the temperature thereof is low, and if the power densities of the intermediate heating structure 110 and the side heating structure 200 are the same, the temperature of the cell unit 310 of the end portion of the cell unit group 300 located in the first direction may not reach the usable temperature yet when the temperature is raised, and the temperature of the cell unit 310 located in the middle position is relatively high, thereby forming a temperature difference between the respective portions of the cell unit group 300.

Therefore, setting the power density of the intermediate heating structure 110 to be smaller than that of the side heating structure 200 is advantageous in avoiding a situation in which the local temperature of the cell 310 near the intermediate heating structure 110 in the first direction is higher and the local temperature of the cell 310 near the side heating structure 200 is lower during heating.

Optionally, the power density of the intermediate heating structure 110 is 0.8-0.95 times the power density of the side heating structure 200. For example, 0.85 times, for example, 0.9 times, the specific multiplying power can be set according to the actual working condition, and will not be described in detail here.

In this way, the power density of the intermediate heating structure 110 is too low to cause the cell unit 300 to be heated near the middle portion.

Alternatively, when the number of the intermediate heating structures 110 is set to be plural, the minimum value of the distance between the intermediate heating structure 110 and the two side heating structures 200 is the minimum distance, and the smaller the minimum distance, the smaller the power density of the intermediate heating structure 110. And, the power density of each of the intermediate heating structures 110 is 0.8-0.95 times that of the side heating structures 200.

As shown in fig. 1, 4 to 6, optionally, the side heating structures 200 and the middle heating structure 110 are both metal heating films, and the metal heating films are attached to the sides of the corresponding cell units 310.

The metal heating film is a semi-transparent or full-transparent metal flexible electric heating film with a sandwich structure, wherein the upper surface and the lower surface are insulating films with good temperature resistance and excellent insulating property, and the middle is a resistive circuit made of special alloy foil. The insulating layer of the metal electrothermal film is a polyimide film; the polyimide film has excellent insulating strength, excellent electric resistance strength and excellent heat conduction efficiency; the heating body is made of special alloy foil and has excellent resistance stability. And a considerably high temperature control accuracy can be obtained.

The metal heating films may be adhesively attached to the sides of the corresponding cell units 310 or otherwise attached, which will not be described in detail herein.

As shown in fig. 4, the heat insulating structure 120 is optionally a heat insulating sheet made of a heat insulating material.

For example, the heat insulating sheet is made of heat insulating foam. Light weight and good heat insulation effect.

As shown in fig. 4, optionally, the intermediate heating structure 110 includes an intermediate heating body 111, and first conductive structures 112 and second conductive structures located at both ends of a heating circuit on the intermediate heating body 111, and the second conductive structures of the two intermediate heating structures 110 of the same intermediate heating unit 100 are electrically connected, and each first conductive structure 112 is disposed near a set end of the cell unit 300 in a second direction, which is perpendicular to the first direction.

Referring to fig. 1 to 3, the second direction is a left-right direction, and the set end is a right end.

In this way, when one of the two first conductive structures 112 of the intermediate heating unit 100 is used as a current input connection terminal and the other is used as a current output connection terminal to be connected to a circuit, the two intermediate heating structures 110 of the intermediate heating unit 100 are connected in series, so that the power supply structure is simple, and the intermediate heating unit 100 can be conveniently connected to the power supply circuit at the set terminal.

As shown in fig. 6, the side heating structure 200 includes a side heating body 211, and third and fourth conductive structures 212 and 313 at both ends of a heating circuit on the side heating body 211, the third conductive structure 212 being disposed near a set end in the second direction.

In this way, the connection operation of the third conductive structure 212 and the power supply circuit can be performed at the set end. At this time, in some embodiments, the fourth conductive structure 313 may also be disposed near the set end, and of course, may be disposed far from the set end, which may be designed according to the main power supply circuit of the battery module.

As shown in fig. 1 to 3, optionally, the third conductive structure 212 is electrically connected with the first conductive structure 112 of the intermediate heating structure 110 adjacent in the first direction; when the number of the battery cells 310 distributed in the first direction is greater than or equal to three, the first conductive structures 112 of the two adjacent intermediate heating structures 110 respectively located on the different intermediate heating units 100 in the first direction are electrically connected.

That is, along the first direction, each heating structure is serially connected in turn, and corresponding connection operation is performed at the set end, so that the arrangement of the power supply circuit of the heating assembly is facilitated, the structure is simple, and the practicability is strong.

Optionally, the first conductive structure 112, the third conductive structure 212 and the fourth conductive structure 313 each comprise an electrical connection line and a plug at an end of the electrical connection line, by which the connection between the respective conductive structures is achieved.

Specifically, one end of the electric connection wire is connected with one terminal of the corresponding heating circuit, and the other end of the electric connection wire is provided with the plug connector.

At this time, taking the connection of the first conductive structure 112 and the third conductive structure 212 as an example, the plug connector on one of the first conductive structure 112 and the third conductive structure 212 has a female plug connector, and the plug connector on the other one of the first conductive structure 112 and the third conductive structure 212 has a male plug connector, and the female plug connector and the male plug connector are in plug connection. The connection between the other conductive structures is similar.

In this way, the first conductive structure 112, the third conductive structure 212 and the fourth conductive structure 313 are facilitated to perform corresponding connection operations.

As shown in fig. 4, optionally, the second conductive structures are disposed near the set end, and the two second conductive structures of the two intermediate heating structures 110 of the intermediate heating unit 100 are both first conductive terminals, and the two first conductive terminals of the intermediate heating unit 100 are connected by a connection wire 130.

So, connecting wire 130 also is located the setting end, and heating element keeps away from the terminal surface of the one end of setting end in the second direction can set up comparatively neatly, reduces because of arranging heating element's influence to battery module's current structure.

In the above embodiment, alternatively, the two intermediate heating structures 110 and the heat insulating structure 120 of the intermediate heating unit 100 are adhesively connected or connected using a connecting member.

At this time, the intermediate heating unit 100 as a whole is convenient to take, place, mount, and the like.

In another embodiment of the present utility model, a battery module is provided, which includes a battery cell unit 300 and the heating assembly of the foregoing embodiment, where the battery cell unit 300 includes a plurality of battery cells 310 distributed along a first direction, two side heating structures 200 of the heating assembly are respectively disposed on two sides of the battery cell unit 300 along the first direction, and an intermediate heating unit 100 of the heating assembly is disposed between two adjacent battery cells 310 in the first direction.

Some of the details of the battery module are described in the previous embodiment, and are not repeated here.

Optionally, the battery module further includes a bottom plate (not shown in the figure) and two end plates 400, where the cell unit 300 is placed on the bottom plate, the two end plates 400 are located at two ends of the cell unit 300 along the second direction, and the two end plates 400 are connected with the bottom plate, so as to form a position limit of the cell unit 300 in the second direction.

Optionally, a clearance groove 410 is formed on the end plate 400, the clearance groove 410 being provided corresponding to the intermediate heating unit 100 for at least partial passage of the intermediate heating unit 100.

For example, the clearance groove 410 is used for passing through the first conductive structure 112, or the clearance groove 410 is used for being connected with the intermediate heating unit 100 in a clamping manner, or the like.

Optionally, the battery cell 310 includes a plurality of battery cells 311 distributed along the second direction.

A further embodiment of the present utility model provides a power battery including the battery module of the above embodiment.

A further embodiment of the present utility model provides an automobile including the battery module or the power battery of the above embodiment.

The battery module, the power battery and the automobile all have all the beneficial effects of the heating assembly, and are not described in detail herein.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and such changes and modifications would fall within the scope of the utility model.

Claims (10)

1. The heating assembly is characterized by comprising an intermediate heating unit (100) and side heating structures (200), wherein the two side heating structures (200) are respectively arranged at two sides of a battery cell unit group (300) of a battery module along a first direction, and the battery cell unit group (300) comprises a plurality of battery cell units (310) distributed along the first direction; the intermediate heating unit (100) is used for being arranged between two adjacent electric core units (310) in the first direction, the intermediate heating unit (100) comprises an intermediate heating structure (110) and a heat insulation structure (120), the heat insulation structure (120) is arranged between the two intermediate heating structures (110), and the two intermediate heating structures (110) are respectively attached to the two adjacent electric core units (310).

2. The heating assembly according to claim 1, wherein the power density of the intermediate heating structure (110) is smaller than the power density of the side heating structure (200).

3. A heating assembly according to claim 2, wherein the power density of the intermediate heating structure (110) is 0.8-0.95 times the power density of the side heating structure (200).

4. The heating assembly of claim 1, wherein the side heating structures (200) and the intermediate heating structures (110) are each metal heating films that are bonded to the sides of the corresponding cell units (310); and/or, the heat insulation structure (120) is a heat insulation sheet, and the heat insulation sheet is made of heat insulation materials.

5. A heating assembly according to any one of claims 1 to 4, wherein the intermediate heating structure (110) comprises an intermediate heating body (111) and first and second conductive structures (112) located at both ends of a heating circuit on the intermediate heating body (111), the second conductive structures of two intermediate heating structures (110) of the same intermediate heating unit (100) being electrically connected, each of the first conductive structures (112) being located in a second direction, the second direction being perpendicular to the first direction, near a set end of the group of cell units (300).

6. A heating assembly according to claim 5, wherein the side heating structure (200) comprises a side heating body (211) and third (212) and fourth (313) conductive structures located on both ends of the heating circuit on the side heating body (211), the third conductive structure (212) being arranged in the second direction close to the set end;

-the third electrically conductive structure (212) is electrically connected to the first electrically conductive structure (112) of the intermediate heating structure (110) adjacent in the first direction; when the number of the electric core units (310) distributed in the first direction is greater than or equal to three, the first conductive structures (112) of two adjacent intermediate heating structures (110) respectively located on different intermediate heating units (100) in the first direction are electrically connected.

7. The heating assembly according to claim 6, wherein the first electrically conductive structure (112), the third electrically conductive structure (212) and the fourth electrically conductive structure (313) each comprise an electrical connection line and a plug at the end of the electrical connection line, the connection between the respective electrically conductive structures being achieved by a plug connection of the plug;

and/or the second conductive structures are arranged near the setting end, the two second conductive structures of the two intermediate heating structures (110) of the intermediate heating unit (100) are first conductive terminals, and the two first conductive terminals of the intermediate heating unit (100) are connected through a connecting wire (130);

and/or the two intermediate heating structures (110) of the intermediate heating unit (100) and the heat insulation structure (120) are connected by bonding or by adopting a connecting piece.

8. A battery module, characterized by comprising a battery cell unit (300) and the heating assembly according to any one of claims 1 to 7, wherein the battery cell unit (300) comprises a plurality of battery cell units (310) distributed along a first direction, two side heating structures (200) of the heating assembly are respectively arranged on two sides of the battery cell unit (300) along the first direction, and an intermediate heating unit (100) of the heating assembly is arranged between two adjacent battery cell units (310) along the first direction.

9. The battery module according to claim 8, further comprising a bottom plate and end plates (400), wherein the battery cell group (300) is placed on the bottom plate, two of the end plates (400) are located at both ends of the battery cell group (300) in the second direction, and both of the end plates (400) are connected to the bottom plate to form a position limit of the battery cell group (300) in the second direction; a clearance groove (410) is formed on the end plate (400), and the clearance groove (410) is arranged corresponding to the intermediate heating unit (100) and is used for at least partial passage of the intermediate heating unit (100);

and/or the cell unit (310) comprises a plurality of cells (311) distributed along the second direction; the second direction is perpendicular to the first direction.

10. An automobile comprising the battery module according to claim 8 or 9.