CN117996280A

CN117996280A - Battery, battery thermal management system and vehicle

Info

Publication number: CN117996280A
Application number: CN202311778273.4A
Authority: CN
Inventors: 王振涛; 曹云飞; 曹海月; 董淑玲; 张占江; 赵豪儒; 高妍; 阎超; 李军
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2023-12-21
Filing date: 2023-12-21
Publication date: 2024-05-07

Abstract

The application relates to the technical field of electric automobiles, in particular to a battery, a battery thermal management system and a vehicle, wherein the battery comprises a battery core group, a heat exchange component and a heat conduction part, the battery core group comprises a plurality of battery cores, the battery cores are stacked along a preset direction, at least one side surface of the battery core group is attached to the heat exchange component, the heat conduction part is arranged among the battery cores, and the heat conduction part can fully distribute the side surface of the battery core, which is contacted with the heat conduction part. According to the battery, the battery thermal management system and the vehicle provided by the application, the temperature of the battery core is effectively homogenized, the temperature difference in the battery core group is greatly reduced, the stability of the battery core group and the service life of the battery core group are effectively improved, and the heat exchange efficiency between the heat exchange assembly and the battery core group can be effectively improved by the heat conducting part, so that the whole battery core group can be rapidly and uniformly kept at a proper working temperature under the heat exchange effect of the heat exchange assembly, and the cruising ability and the charging and discharging efficiency of the battery are further improved.

Description

Battery, battery thermal management system and vehicle

Technical Field

The application relates to the technical field of electric automobiles, in particular to a battery, a battery thermal management system and a vehicle.

Background

With the increasing trend of market competition of electric vehicles, the cruising ability of the electric vehicles and the quick charging ability of the electric vehicles become determinants of the market in the strategic northern areas of the electric vehicles in cold environments.

However, in order to ensure the normal use of the power battery in a cold environment nowadays, a heating device is usually arranged at the side part of the battery cell group, so that a larger temperature difference is formed between one side of the battery cell group, which is close to the heating device, and the other side of the battery cell group, which causes the overlarge temperature difference inside the battery cell group, greatly influences the stability of the battery cell group and the service life of the battery cell group, and greatly influences the charging efficiency of the power battery.

Disclosure of Invention

The application aims to provide a battery, a battery thermal management system and a vehicle, which are used for solving the technical problems that in the prior art, in order to ensure the normal use of a power battery in a cold environment, a heating device is usually arranged at the side part of a battery cell group, so that a larger temperature difference is formed between one side of the battery cell group, which is close to the heating device, and the other side of the battery cell group, and the temperature difference inside the battery cell group is overlarge, so that the stability of the battery cell group and the service life of the battery cell group are greatly influenced, and the charging efficiency of the power battery is greatly influenced.

According to a first aspect of the present application, there is provided a battery including a battery cell group including a plurality of battery cells stacked in a predetermined direction, a heat exchange assembly and a heat conduction portion, at least one side surface of the battery cell group being bonded to the heat exchange assembly, the heat conduction portion being disposed between the plurality of battery cells, and the heat conduction portion being capable of fully distributing side surfaces of the battery cells in contact with the heat conduction portion.

Preferably, the heat exchange liquid plate part is provided with a liquid flow channel for circulating heat exchange liquid;

and the heating film part is electrically connected with the electric core group so as to convert the electric energy of the electric core group into heat energy.

Preferably, the heating film part comprises a bottom film part, and the bottom film part is fully distributed on one side of the electric core group facing the heat exchange liquid plate part.

Preferably, the heating film part further comprises side film parts, the side film parts extend along the preset direction, and the side film parts are respectively attached to two side surfaces of the battery cell group in the direction perpendicular to the preset direction;

And/or the heating film part further comprises end film parts, and the end film parts are respectively attached to the end surfaces of the two sides of the battery cell group in the preset direction.

Preferably, the heating film part further includes a heating film relay, and the heating film relay, the base film part, the side film part, and the end film part are connected in series between the positive electrode and the negative electrode of the battery;

And/or the heating film part further comprises a heating film fuse, and the heating film fuse, the heating film relay, the bottom film part, the side film part and the end film part are connected in series between the anode and the cathode of the battery.

Preferably, the heat conducting part is sheet-shaped;

In the battery cell group, the heat conducting parts are arranged between every two adjacent battery cells.

According to a second aspect of the present application, a battery thermal management system is provided, which includes a battery according to any of the above-mentioned technical solutions, so that the battery has all the beneficial technical effects, and is not described herein again.

Preferably, the method further comprises:

The temperature measuring part is used for detecting the ambient temperature of the battery;

The heat exchange liquid circulation control part is communicated with the liquid flow channel of the heat exchange liquid plate part so as to control the temperature of heat exchange liquid in the liquid flow channel;

The control part is respectively in communication connection with the temperature measuring part, the heat exchange liquid circulation control part and the heating film part;

When the temperature detected by the temperature measuring part is lower than a first preset temperature, the control part can control the heat exchange liquid circulation control part to heat the heat exchange liquid and control the heating film part to be opened, so that the heating film part and the heat exchange liquid plate part heat the battery cell group together;

when the temperature detected by the temperature measuring part is between the first preset temperature and the second preset temperature, the second preset temperature is higher than the first preset temperature, and the control part can control the heating film part or the heat exchange liquid plate part to heat the electric core group;

When the temperature detected by the temperature measuring part is between the second preset temperature and a third preset temperature, the third preset temperature is higher than the second preset temperature, and the control part controls the heating film part to be closed and controls the heat exchange liquid circulation control part to be in a resting state;

When the temperature detected by the temperature measuring part exceeds the third preset temperature, the control part can control the heat exchange liquid circulation control part to dissipate heat and cool heat exchange liquid and control the heating film part to be closed, so that the heat exchange liquid plate part cools the battery cell group.

According to a third aspect of the present application, there is provided a vehicle comprising the battery or the battery thermal management system according to any one of the above-mentioned aspects, and therefore, all the advantageous technical effects of the battery and the battery thermal management system are provided, and further description is omitted herein.

Preferably, the battery rack is fixedly arranged on the frame, the bottom guard plate and the floor are respectively covered at two opposite ends of the battery rack, so that the bottom guard plate, the battery rack and the floor enclose to form a containing bin, and the battery cell group is arranged in the containing bin.

Compared with the prior art, the application has the beneficial effects that:

according to the battery provided by the application, the heat conducting parts are arranged between the battery cores stacked with each other, the heat conducting parts fully distribute the side surfaces of the battery cores, which are contacted with the heat conducting parts, and the heat conduction of the heat conducting parts is utilized to effectively homogenize the temperature of the battery cores, so that the temperature difference in the battery core group is greatly reduced, the stability of the battery core group and the service life of the battery core group are effectively improved, the heat exchange efficiency between the heat exchange assembly and the battery core group can be effectively improved by the heat conducting parts, and the whole battery core group can be rapidly and uniformly kept at a proper working temperature under the heat exchange effect of the heat exchange assembly, thereby improving the cruising ability and the charging and discharging efficiency of the battery.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an explosion structure of a battery according to an embodiment of the present application;

fig. 2 is a schematic top view of a battery according to an embodiment of the present application;

fig. 3 is a schematic layout diagram of a heating film part according to an embodiment of the present application;

Fig. 4 is a schematic diagram of a connection structure of a heating film portion according to an embodiment of the present application;

Fig. 5 is a schematic view of another connection structure of a heating film portion according to an embodiment of the present application;

FIG. 6 is a schematic view of an exploded structure of a vehicle according to an embodiment of the present application;

fig. 7 is a schematic diagram of a battery thermal management system according to an embodiment of the present application.

Reference numerals:

1-a battery cell group; 10-an electric core; 11-energizing the fuse; 2-a heat conduction part; 3-a heat exchange assembly; 31-heating the membrane portion; 311-a carrier film portion; 312-side membrane portion; 313-end membrane portion; 314-wire; 32-a heat exchange liquid plate part; 33-heating film fuses; 34-heating a film relay; 4-a bottom guard plate; 5-battery rack; 51-frame; 52-a cross beam; 6-floor; 7-a frame; 81-a charging positive electrode interface; 82-a charging negative electrode interface; 831-precharge resistor; 832-precharge relay; 84-total positive relay; 85-total fuses; 86-total negative relay; 9-a control part.

L-vehicle length direction; w is the vehicle width direction; h-vehicle height direction.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown.

The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, 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 mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

A battery, a battery thermal management system, and a vehicle according to some embodiments of the present application are described below with reference to fig. 1 to 7.

Referring to fig. 1 to 7, an embodiment of the first aspect of the present application provides a battery including a battery cell group 1, a heat exchange assembly 3, and a heat conduction portion 2, wherein the battery cell group 1 includes a plurality of battery cells 10, the plurality of battery cells 10 are stacked along a predetermined direction, at least one side surface of the battery cell group 1 is attached to the heat exchange assembly 3, the heat conduction portion 2 is disposed between the plurality of battery cells 10, and the heat conduction portion 2 can fully fill up the side surfaces of the battery cells 10 contacting the heat conduction portion 2.

According to the battery provided by the technical characteristics, the heat conducting parts 2 are arranged between the battery cells 10 stacked and arranged, the heat conducting parts 2 are fully distributed on the side surfaces of the battery cells 10, which are contacted with the heat conducting parts 2, the heat conductivity of the heat conducting parts 2 is utilized to effectively homogenize the temperature of the battery cells 10, the temperature difference in the battery cell group 1 is greatly reduced, the stability of the battery cell group 1 and the service life of the battery cell group 1 are effectively improved, and the heat exchange efficiency between the heat exchange assembly 3 and the battery cell group 1 can be effectively improved by the heat conducting parts 2, so that the whole battery cell group 1 can be rapidly and uniformly kept at a proper working temperature under the heat exchange effect of the heat exchange assembly 3, and the cruising ability and the charging and discharging efficiency of the battery are further improved.

As shown in fig. 1, taking a square cell 10 as an example, the plurality of cells 10 of the cell group 1 are stacked along a predetermined direction, and the sides of two adjacent cells 10 of the plurality of cells 10 that are attached to each other are perpendicular to the predetermined direction. The heat conducting portion 2 is disposed between the plurality of battery cells 10, and it is understood that the heat conducting portion 2 is disposed between the sides of at least one group of two adjacent battery cells 10 in the plurality of battery cells 10. In other words, the side surfaces of the cells 10 filled with the heat conductive portions 2 are the bonded side surfaces.

Preferably, as shown in fig. 1, the heat conducting part 2 may be in a sheet shape, so that the space occupied by the heat conducting part 2 is effectively reduced, and the influence of the heat conducting part 2 on the energy density of the battery is reduced.

Alternatively, the heat conductive portion 2 may be a heat conductive material, for example, graphene, heat conductive silica gel, or the like.

Preferably, taking the heat conducting portion 2 as a graphene sheet as an example, the dimension of the heat conducting portion 2 in the predetermined direction may be 0.2mm to 1mm, so as to ensure the heat conducting efficiency of the heat conducting portion 2 and effectively reduce the occupation of the heat conducting portion 2 to the space of the battery cell group 1.

Preferably, in the battery cell group 1, a heat conducting part 2 can be arranged between every two adjacent battery cells 10 so as to further improve the heat conducting efficiency of the battery cell group 1.

It should be noted that the battery provided by the present application is not limited to the heat conducting portions 2 disposed between every two adjacent battery cells 10, and the disposed positions, the disposed number, and the corresponding relation between the heat conducting portions 2 and the battery cells 10 may be adaptively adjusted according to the size of the battery cell group 1 and the heat conductivity of the heat conducting portions 2, for example, in the battery cell group 1, one heat conducting portion 2 may be disposed every N battery cells 10 (i.e., n=1, 2,3, 4, 5, 6 … …).

Preferably, as shown in fig. 1, the heat exchange assembly 3 may include a heat exchange liquid plate portion 32, and the heat exchange liquid plate portion 32 may be provided with a liquid flow channel through which the heat exchange liquid circulates, so as to implement heat exchange between the electric core set 1 and the heat exchange liquid plate portion 32 through circulation of the heat exchange liquid in the liquid flow channel.

It should be noted that, the heat exchange liquid plate portion 32 may be a liquid cooling plate in the prior art, and the structure of the liquid cooling plate and the arrangement of the liquid flow channels are conventional in the art, and are not described herein again. In addition, taking the application of the battery to an automobile as an example, the heat exchange liquid plate portion 32 may be connected to a liquid cooling circulation system (i.e., a heat exchange liquid circulation control portion 9 described below) of the vehicle, and not only may the heat exchange liquid be heated by using cooling waste heat of an engine of the vehicle to heat the battery cell group 1, but also the heat exchange liquid may be radiated by using a cooling system of the vehicle to radiate heat of the battery cell group 1. In other words, the heat exchange liquid plate portion 32 can not only heat the cell stack 1 in a cold environment, but also cool and dissipate heat from the cell stack 1 in a normal temperature/high temperature environment.

Preferably, as shown in fig. 1 and 7, the heat exchange assembly 3 may further include a heating film portion 31, where the heating film portion 31 may be electrically connected to the battery pack 1 to convert electric energy of the battery pack 1 into heat energy, so as to heat the battery by using the electric energy of the battery, so as to compensate for the problem of insufficient heating efficiency of the heat exchange liquid plate portion 32 in a cold environment.

Preferably, as shown in fig. 2 to 5, the heating film part 31 may include a base film part 311, and the base film part 311 may be fully distributed on a side of the cell group 1 facing the heat exchange liquid plate part 32.

Alternatively, as shown in fig. 1, the bottom film 311 may include a plurality of heating films, where the heating films are in one-to-one correspondence with the cells 10 of the cell group 1, so as to ensure that the heat provided by the bottom film 311 can be fully utilized.

Alternatively, a plurality of heating membranes corresponding to the same cell group 1 may be connected in series so as to facilitate wiring of the heating membranes.

Optionally, not shown in the figure, the heating film portion may further include a limiting strip, where the limiting strip is disposed between the bottom film portion and the cell group, so that a glue injection gap is formed between the bottom film portion and the cell group. Optionally, the heating film portion may further include a heat conductive adhesive layer, where the heat conductive adhesive layer is disposed in the glue injection slot, so as to attach and fix the bottom film portion to a side of the electric core group facing the heat exchange liquid plate portion.

Optionally, the thickness of the limiting strip may be 0.2 mm-1 mm, so as to ensure the thickness and the bonding strength of the heat conducting glue layer.

Preferably, as shown in fig. 2 to 5, the heating film 31 may further include a side film portion 312, the side film portion 312 extending along a predetermined direction, and the side film portion 312 may be respectively attached to two side surfaces of the battery cell 1 in a direction perpendicular to the predetermined direction, so as to heat the side surfaces of the battery cell 1, thereby further improving the uniformity of heating the battery cell 1 by the heating film 31 and the heating efficiency of the heating film 31.

Similarly, as shown in fig. 2 to 5, the heating film 31 may further include end film portions 313, and the end film portions 313 may be respectively attached to two side end surfaces of the cell group 1 in a predetermined direction, so as to heat the end surfaces of the cell group 1, thereby further improving the uniformity of heating the cell group 1 by the heating film 31 and the heating efficiency of the heating film 31.

Taking the above battery applied to a vehicle as an example, as shown in fig. 1 to 7, L shown in the drawings is an example of a vehicle length direction L of the vehicle, W shown in the drawings is an example of a vehicle width direction W of the vehicle, and H shown in the drawings is an example of a vehicle height direction of the vehicle. Preferably, the predetermined direction may be parallel to the vehicle length direction L. The predetermined direction is not limited to the example parallel to the vehicle length direction L, and may be parallel to the vehicle width direction, for example, not shown in the figure.

Alternatively, as shown in fig. 1 to 3, the battery may include a plurality of cell groups 1, the plurality of cell groups 1 being arranged side by side in the vehicle width direction W in a cell group row.

As shown in fig. 1 to 3, an example is shown in which the battery includes two cell group rows that may be arranged side by side in the vehicle length direction L. However, the number of the battery cell groups is not limited to this, and can be adaptively adjusted according to the actual requirement of the battery, and the number of the battery cell groups can be 1, 3,4, 5 or … ….

Alternatively, as shown in fig. 2 and 4, the battery frame 5 described below may be provided with a cross member 52 extending in the vehicle width direction W, and the cross member 52 may be provided between adjacent two cell group rows.

Preferably, as shown in fig. 4 and 5, the heating film 31 may further include a conductive wire 314, and the conductive wire 314 is disposed in the slot of the beam 52 to electrically connect the bottom film portion 311, the side film portion and the end film portion 313 corresponding to each of the cell groups 1 in the battery.

Preferably, as shown in fig. 1 and 7, the heating film part 31 may further include a heating film relay 34, and four of the heating film relay 34, the base film part 311, the side film part 312, and the end film part 313 are connected in series between the positive electrode and the negative electrode of the battery, so that the opening and closing control of the heating film part 31 is achieved by the heating film relay 34.

Preferably, as shown in fig. 7, taking the above battery as an example for a vehicle, the vehicle may further include a charging interface, where the charging interface may include a charging positive electrode interface 81 and a charging positive electrode interface 81, and the heating film relay 34, the bottom film portion 311, the side film portion 312 and the end film portion 313 may be further connected in series between the charging positive electrode interface 81 and the charging positive electrode interface 81, so that the heating film portion 31 can be directly powered by a charging power source of the vehicle when the vehicle is charged, thereby saving the power consumption of the battery pack 1.

Preferably, as shown in fig. 1 and 7, the heating film part 31 may further include a heating film fuse 33, and five of the heating film fuse 33, the heating film relay 34, the base film part 311, the side film part 312, and the end film part 313 are connected in series between the positive electrode and the negative electrode of the battery to improve the safety of the heating film part 31.

Similarly, as shown in fig. 7, five of the heating film fuse 33, the heating film relay 34, the base film portion 311, the side film portion 312, and the end film portion 313 may also be connected in series between the charging positive electrode interface 81 and the charging positive electrode interface 81.

Optionally, as shown in fig. 7, the battery may further include an exciting fuse 11, where the exciting fuse 11 is connected in series in the battery cell row to ensure the safety of the battery.

Preferably, not shown, the battery thermal management system may further include a temperature measuring part for detecting an ambient temperature of the battery, so as to detect a real-time temperature of the battery.

Preferably, not shown, the battery thermal management system may further include a heat exchange liquid circulation control part that may communicate with the liquid flow passage of the heat exchange liquid plate part to control the temperature of the heat exchange liquid in the liquid flow passage.

Taking the following vehicle as an example, the heat exchange liquid circulation control part 9 may be a liquid cooling circulation system of the vehicle, and the principle that the liquid cooling circulation system is communicated with the liquid cooling plate to control the temperature of the liquid cooling plate is in the prior art, which is not described herein.

Preferably, as shown in fig. 7, the battery thermal management system may further include a control part 9, and the control part 9 may be respectively connected with the temperature measuring part, the heat exchange liquid circulation control part 9, and the heating film part 31 in a communication manner, so as to control the opening and closing of both the heating film part 31 and the heat exchange liquid plate part 32 according to the temperature of the battery.

Alternatively, the control part 9 may be a Battery Management System (BMS) MANAGEMENT SYSTEM.

Specifically, when the temperature detected by the temperature measuring part is lower than the first preset temperature, the control part 9 can control the heat exchange liquid circulation control part 9 to heat the heat exchange liquid and control the heating film part 31 to be opened, so that the heating film part 31 and the heat exchange liquid plate part 32 heat the battery cell group 1 together, when the battery is in a colder environment, the battery cell group 1 can be heated through the heating film part 31 and the heat exchange liquid plate part 32 at the same time, so that the battery cell group 1 is at a proper working temperature, the charging efficiency and the endurance of the battery are ensured, and compared with the battery with the existing battery with single liquid cooling plate for heat supply, the charging time of the battery can be shortened by 10% -50%, and the efficiency of the battery can be improved by 50% -80%.

Alternatively, the first predetermined temperature may be less than or equal to-20 degrees celsius.

When the temperature detected by the temperature measuring part is between the first predetermined temperature and a second predetermined temperature, the second predetermined temperature is higher than the first predetermined temperature, and the control part 9 can control the heating film part 31 or the heat exchange liquid plate part 32 to heat the electric core group 1.

Alternatively, the second predetermined temperature may be between-7 degrees celsius and zero degrees celsius.

When the temperature detected by the temperature measuring part is between the second preset temperature and the third preset temperature, the third preset temperature is higher than the second preset temperature, the control part 9 controls the heating film part 31 to be closed, and controls the heat exchange liquid circulation control part 9 to be in a resting state.

The resting state is understood to mean a state in which the heat exchange cycle control unit 9 is not heating the heat exchange liquid in the heat exchange plate unit nor cooling the heat exchange liquid in the heat exchange plate unit.

Alternatively, the third predetermined temperature may be between 30 degrees celsius and 60 degrees celsius.

When the temperature detected by the temperature measuring part exceeds a third preset temperature, the control part 9 can control the heat exchange liquid circulation control part 9 to radiate heat and refrigerate the heat exchange liquid and control the heating film part 31 to be closed, so that the heat exchange liquid plate part 32 cools the battery cell group 1.

Preferably, as shown in fig. 7, the vehicle may further include a vehicle and a charging interface, and the charging interface may further include a charging positive electrode interface 81 and a charging positive electrode interface 81. The charging positive electrode interface 81 is connected to the positive electrode of the battery, and the charging negative electrode interface 82 is connected to the negative electrode of the battery.

Preferably, as shown in fig. 7, the vehicle may further include a total positive relay 84 and a total negative relay 86, the total positive relay 84 being disposed between the charging positive electrode interface 81 and the positive electrode of the battery, and the total negative relay 86 being disposed between the charging negative electrode interface 82 and the negative electrode of the battery.

Preferably, as shown in fig. 7, the vehicle may further include a pre-charge resistor 831 and a pre-charge relay 832, with a series circuit of both the pre-charge resistor 831 and the pre-charge relay 832 being connected in parallel with the total negative relay 86.

Preferably, as shown in fig. 7, the vehicle may further include a total fuse 85, and the total fuse 85 may be disposed between the charging positive electrode interface 81 and the positive electrode of the battery.

In the embodiment, preferably, as shown in fig. 6, still include frame 7, battery rack 5, end backplate 4 and floor 6, battery rack 5 is fixed to be set up in frame 7, end backplate 4 and floor 6 both cover respectively are located battery rack 5 in the opposite both ends of each other in car height direction H, so that end backplate 4, battery rack 5 and floor 6 three enclose and are established and hold the storehouse, electric core group 1 sets up in holding the storehouse, so, direct with electric core group 1 set up in battery rack 5, end backplate 4 and floor 6 three enclose and establish hold the storehouse in, broken traditional battery package set up independent casing's structure, make electric core group 1 direct integrated in frame 7, effectively compressed the space that the battery occupies, and then promote the vehicle space.

Preferably, as shown in fig. 2 and fig. 4 to fig. 6, the battery frame 5 may include a frame 51 and the cross beam 52, the frame 51 may be enclosed to form a rectangular frame, and the cross beam 52 is disposed in the frame and fixedly connected with the frame, so as to improve the supporting strength of the battery frame 5.

Alternatively, the battery frame 5 may be docked with the lower end of the frame 7 to mount the battery on the frame 7.

Preferably, the battery frame 5 may be a steel roll structure to enhance the supporting strength of the battery frame 5.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

1. The utility model provides a battery, its characterized in that includes electric core group, heat exchange component and heat conduction portion, electric core group includes a plurality of electric cores, and is a plurality of the electric core stacks the setting along predetermined direction, at least one side of electric core group with the laminating of heat exchange component, the heat conduction portion sets up a plurality of between the electric core, just the heat conduction portion can be full cloth the electric core with the side of heat conduction portion contact.

2. The battery of claim 1, wherein the heat exchange assembly comprises:

the heat exchange liquid plate part is provided with a liquid flow channel for circulating heat exchange liquid;

3. The battery according to claim 2, wherein the heating film portion includes a base film portion that is fully arranged on a side of the cell group facing the heat exchange liquid plate portion.

4. The battery of claim 3, wherein the battery is provided with a battery cell,

The heating film part further comprises side film parts which extend along the preset direction, and the side film parts are respectively attached to two side surfaces of the battery cell group in the direction perpendicular to the preset direction;

5. The battery of claim 4, wherein the battery is provided with a plurality of electrodes,

The heating film part further comprises a heating film relay, and the heating film relay, the bottom film part, the side film part and the end film part are connected in series between the anode and the cathode of the battery;

6. The battery according to any one of claim 2 to 5, wherein,

The heat conducting part is sheet-shaped;

7. A battery thermal management system comprising the battery of any one of claims 2 to 6.

8. The battery thermal management system of claim 7, further comprising:

9. A vehicle comprising the battery of any one of claims 1 to 6 or comprising the battery thermal management system of claim 7 or 8.

10. The vehicle of claim 9, further comprising a frame, a battery rack, a bottom guard plate, and a floor, wherein the battery rack is fixedly disposed on the frame, the bottom guard plate and the floor are respectively disposed on opposite ends of the battery rack in a covering manner, such that the bottom guard plate, the battery rack, and the floor enclose a receiving compartment, and the battery cell assembly is disposed in the receiving compartment.