CN115966845A

CN115966845A - Battery module, battery pack and electric device

Info

Publication number: CN115966845A
Application number: CN202310010972.8A
Authority: CN
Inventors: 崔金强; 许炳; 徐文玲
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-04-14

Abstract

The application relates to new energy battery technical field provides a battery module, battery package and power consumption device, and wherein, the battery module includes: the battery module comprises a battery module body and a battery module, wherein the battery module body comprises a plurality of battery cells, and the plurality of battery cells are stacked along the length direction of the battery module and extend along the width direction of the battery module; the wire harness isolation plate component comprises two wire harness isolation plates, the two wire harness isolation plates are respectively positioned at two ends of the plurality of battery cells in the length direction and are connected with the plurality of battery cells, and each wire harness isolation plate is provided with a pressure relief channel along the length direction of the wire harness isolation plate; the first liquid cooling plate is positioned on one side of the electric core assembly along the height direction and is attached to the plurality of electric cores; the pressure relief channel is communicated with the first liquid cooling plate and used for guiding high-temperature and high-pressure gas sprayed by the battery cell when thermal runaway to enter the first liquid cooling plate. Through the technical scheme of this application, can improve the security performance of battery module.

Description

Battery module, battery pack and electric device

Technical Field

The application relates to the technical field of new energy batteries, in particular to a battery module, a battery pack and an electric device.

Background

With the rapid growth of the new energy automobile market, the safety problem of the new energy automobile is increasingly serious, and at present, many new energy automobiles generate smoke, fire and other accidents in the market, so that the life safety of passengers is seriously threatened. Because the existing new energy automobiles all adopt batteries as power sources of power systems, the batteries are prone to safety accidents such as smoking, fire and even explosion in the using process of the vehicles, for example, under the conditions of overcharge, overdischarge, extrusion and the like in the charging process of the vehicles.

In the prior art, when power battery thermal runaway problem appears, do not have the high temperature high-pressure gas that reasonable good electricity core sprayed to lead to high temperature high-pressure gas to cause the postcombustion to other parts in the battery module.

Disclosure of Invention

An object of the embodiment of the application is to provide a battery module, a battery pack and an electric device, which can improve the safety performance of the battery module.

In a first aspect, the present application provides a battery module, including: the battery module comprises a battery module body and a battery module body, wherein the battery module body comprises a plurality of battery cores, and the plurality of battery cores are stacked along the length direction of the battery module body and extend along the width direction of the battery module body;

the wire harness isolation plate assembly comprises two wire harness isolation plates, the two wire harness isolation plates are respectively positioned at two ends of the plurality of battery cores in the length direction and are connected with the plurality of battery cores, and each wire harness isolation plate is provided with a pressure relief channel along the length direction of the wire harness isolation plate;

the first liquid cooling plate is positioned on one side of the electric core assembly along the height direction and is attached to the electric cores;

the pressure relief channel is communicated with the first liquid cooling plate and used for guiding high-temperature and high-pressure gas sprayed by the battery cell during thermal runaway to enter the first liquid cooling plate.

As an implementation mode, the wire harness isolation plate comprises a protruding section, the protruding section is a through structure, one end of the protruding section is connected with the pressure relief channel, and the other end of the protruding section is communicated with the first liquid cooling plate.

As an embodiment, one side of the wire harness isolation plate is further provided with a plurality of pressure relief ports, and the pressure relief ports are communicated with the pressure relief channel;

every the length direction's of electricity core one end all is equipped with explosion-proof valve, and is a plurality of explosion-proof valve homogeneous one-to-one on the electricity core corresponds towards same one end a plurality of on the pencil division board the pressure release mouth sets up.

In one embodiment, the pressure relief port is arranged such that a cross-sectional area thereof gradually decreases from one end away from the pressure relief channel to the other end.

In one embodiment, the size of the pressure relief port is larger than the size of the explosion-proof valve.

In one embodiment, each pressure relief opening is provided with an explosion-proof membrane.

As an implementation mode, a second liquid cooling plate is arranged between two adjacent electric cores, and the second liquid cooling plate is communicated with the first liquid cooling plate.

As an implementation mode, a one-way exhaust valve is further arranged at one end of the protruding section, which is communicated with the first liquid cooling plate.

As an implementation mode, the wire harness isolation plate further comprises a plurality of bus bars, wherein the bus bars and the wire harness isolation plate are integrally formed, and the wire harness isolation plate is further provided with a plurality of through holes which are used for accommodating the bus bars.

As an embodiment, the bus bar includes two attaching sections, the attaching sections are electrically connected to the electrode terminals of the battery cells, and the attaching sections are located in the through holes.

In one embodiment, a folded edge is arranged on the wire harness isolation plate, and the folded edge is located on the opposite side of the protruding section and is used for abutting against the electric core assembly.

In one embodiment, the folded edge is provided with a groove for accommodating the FPC.

In one embodiment, the FPC is electrically connected to the bus bar through a conductive sheet.

In a second aspect, the present application introduces a battery pack including at least one battery module as set forth in the first aspect.

In a third aspect, the application is directed to an electric device comprising the battery pack of the second aspect.

The technical scheme of the application has the following effects:

1. battery pack includes a plurality of electric cores, the width direction both ends of electric core subassembly respectively are equipped with a pencil division board respectively, each pencil division board all is connected with a plurality of electric cores, and the pencil division board is equipped with pressure release channel along length direction, first liquid cooling plate is located electric core subassembly along one side of direction of height, set up with a plurality of electric core laminating, and pressure release channel communicates with first liquid cooling plate, when the thermal runaway problem appears in a certain or several electric cores, the gaseous accessible pressure release channel of high temperature high pressure that sprays gets into to first liquid cooling board in, play the effect of pressure release, first liquid cooling board can cool off high temperature high pressure gas, avoid high temperature high pressure gas to cause the battery module secondary combustion to appear, thereby optimize the security performance of battery module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;

FIG. 2 isbase:Sub>A cross-sectional view along the line A-A in FIG. 1;

FIG. 3 is a schematic view of a portion of the enlarged structure of FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is a schematic structural diagram of a view angle of a battery module according to an embodiment of the present disclosure;

fig. 7 is a schematic structural view of another battery module provided in the embodiment of the present application;

fig. 8 is a schematic structural diagram of a wire harness isolation plate according to an embodiment of the present application.

Icon: 1-electric core; 11-an explosion-proof valve; 12-a positive terminal; 13-a negative terminal; 2-wire harness isolation 5 plates; 21-a pressure relief channel; 22-a protruding section; 23-a pressure relief port; 24-a via hole; 25-folding edges; 26-a groove; 3-a first liquid cooling plate; 4-a second liquid cooling plate; 5-a busbar; 51-a laminating section; 6-FPC; 7-conducting strip.

Detailed Description

The following describes the technical solution 0 in the embodiment of the present application with reference to the drawings in the embodiment of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 5, in a first aspect, an embodiment of the present application describes a battery module, including

The battery module comprises a wire harness isolation board assembly, wherein the wire harness isolation board assembly comprises two wire harness isolation boards 2 and two wire harnesses

The division boards 2 are respectively arranged at two ends of the width direction of the battery module, namely two ends of the battery cores 1 in the length direction 0, and are respectively connected with the battery cores 1 of the corresponding ends, and each wire harness division board 2 is connected with the corresponding end along the length thereof

The inside of direction is equipped with pressure release passageway 21, and pressure release passageway 21 is hollow cavity structures, and the battery module still includes first liquid cold drawing 3, and first liquid cold drawing 3 is located electric core subassembly along one side of direction of height, can be the upside of electric core subassembly, also can be the downside, as an preferred embodiment, and first liquid cold drawing

Cold drawing 3 sets up at electric core subassembly along the downside of direction of height, and sets up with the laminating of a plurality of electric cores 1, has the heat transfer medium of runner in the 5 th liquid cold plate 3, through setting up first liquid cold drawing 3, can organize the electric core

The piece cools down or heaies up, and simultaneously, pressure release channel 21 on two pencil division boards 2 all is linked together with first liquid cold drawing 3, when 1 or a plurality of electric core 1 thermal runaway of a certain electric core, pressure release channel 21 can guide high temperature high-pressure gas to first liquid cold drawing 3 in, through the cooling of heat transfer medium in first liquid cold drawing 3, can also play the effect of pressure release simultaneously, avoid high temperature high-pressure gas to arouse that the secondary combustion appears in other parts of battery module, improve the security performance of battery module.

Optionally, when the problem of thermal runaway takes place for electric core 1 of battery module, this battery module will unable continuation use, consequently, in order to further reduce battery module secondary combustion once more, pass through pressure release channel 21 with high temperature high-pressure gas and guide to first liquid cold drawing 3 in to play the effect of pressure release, also cool off high temperature high-pressure gas simultaneously, thereby to the security performance of optimizing battery module.

As shown in fig. 3 and 5, as an embodiment, the harness isolation plate 2 includes two protruding sections 22, and the number of the protruding sections 22 is two, and the two protruding sections are respectively close to two ends of the harness isolation plate 2, and of course, more protruding sections may be provided, so as to improve the pressure relief performance of the harness isolation plate 2, and enable high-temperature and high-pressure gas to rapidly flow into the first liquid-cooling plate 3. The protruding section 22 is protruded and extended towards the first liquid cooling plate 3, the protruding section 22 is a through structure, one end of the protruding section is communicated with the pressure relief channel 21, and the other end of the protruding section extends into the first liquid cooling plate 3 and is used for guiding high-temperature and high-pressure gas in the pressure relief channel 21 into the first liquid cooling plate 3.

Optionally, the pressure relief channel 21 includes two parts, one of which is the pressure relief channel 21 in the body of the wire harness isolation plate 2, and the other of which is a through structure of the protruding section 22.

Optionally, in order to ensure the insulation and safety of the wire harness isolation plate 2, the wire harness isolation plate 2 is made of high-temperature-resistant and insulation-resistant materials, such as epoxy resin composite materials or mica sheet composite materials; because in the prior art, for the convenience of injection molding, the wire harness isolation plate 2 is made of materials with relatively low flame retardance and good fluidity such as PP/PA, and when the terminal conditions such as thermal runaway of the battery core 1 occur, the wire harness isolation plate 2 is easy to burn.

In addition, in order to avoid insulation failure caused by phenomena of volatilization, corrosion, defect and the like of the material due to cold and hot shrinkage, the water absorption rate of the material is required to be less than 0.1 percent. Meanwhile, in order to ensure the structural performance of the wire harness isolation plate 2, the structural strength of the wire harness isolation plate 2 needs to be designed, the thickness of the wire harness isolation plate is 2-5mm, and the wire harness isolation plate 2 is prevented from being broken by high-temperature and high-pressure gas when the battery cell 1 has the problem of thermal runaway.

Optionally, the wire harness isolation plate 2 is a sheet structure.

As shown in fig. 3, 5 and 7, as an embodiment, a plurality of pressure relief ports 23 are further provided on one side of the wire harness isolation plate 2, the pressure relief ports 23 are all communicated with the pressure relief channel 21, the pressure relief ports 23 are used for guiding high-temperature and high-pressure gas to enter the pressure relief channel 21, an explosion-proof valve 11 is provided at one end of each electrical core 1 along the length direction of the electrical core 1 body, and the explosion-proof valve 11 has explosion-proof and explosion damage reduction functions, and simultaneously has waterproof and ventilation functions; one side that pencil division board 2 has pressure release mouth 23 has the one end setting of explosion-proof valve 11 towards electric core 1 for a plurality of explosion-proof valves 11 on a plurality of electric cores 1 all correspond with a plurality of pressure release mouths 23 on the pencil division board 2 that correspond one end, when the problem of thermal runaway appears in a certain electric core 1 or several electric cores 1, the pressure release mouth 23 that corresponds guides its high temperature high-pressure gas who sprays to pressure release channel 21 in, and discharge into to first liquid cooling plate 3 in through protruding section 22, improve battery module's security.

Optionally, both ends of the electrical core 1 in the length direction are respectively provided with a positive terminal 12 and a negative terminal 13, and the explosion-proof valve 11 and the positive terminal 12 are disposed at the same end of the electrical core 1.

Optionally, interval between two adjacent pressure relief openings 23 on the wire harness isolation plate 2 equals to interval between two adjacent explosion-proof valves 11 at the same end of the electrical core assembly, so that a plurality of explosion-proof valves 11 at the same end of the electrical core assembly are all arranged towards the pressure relief opening 23 at the corresponding end, and high-temperature and high-pressure gas is prevented from being injected to the periphery of the pressure relief opening 23.

Optionally, the both ends of the width direction of battery module respectively are equipped with a pencil division board 2, and simultaneously, the connected mode of a plurality of electric cores 1 in the electric core subassembly is the series connection mode in this application, therefore, explosion-proof valve 11 of two adjacent electric cores 1 is opposite setting towards the direction, namely explosion-proof valve 11 of an electric core 1 faces one end, explosion-proof valve 11 towards the other end with its adjacent electric core 1, and still press from both sides between two adjacent explosion-proof valves 11 of same end and be equipped with an electric core 1, of course, according to actual need, the connection of electric core 1 can also be parallelly connected or the mode of cluster, parallelly connected etc. the different connected mode, lead to electric core 1's the mode of arranging different, then explosion-proof valve 11 orientation also is different, the interval between two adjacent pressure release mouths 23 on pencil division board 2 is also different, this application does not specifically limit to this.

As an embodiment, pressure relief vent 23 is by keeping away from the one end of pressure relief passageway 21 towards the cross-sectional area of the other end and diminishing gradually the setting for pressure relief vent 23 is round platform type structure, and its cross-sectional area of keeping away from the one end of pressure relief passageway 21 is the biggest, and the one end area that is linked together with pressure relief passageway 21 is the minimum, increases the admission pressure, thereby makes pressure relief vent 23 can lead more high temperature high-pressure gas to pressure relief passageway 21 in, improves the efficiency of admitting air, thereby further improves battery module's power consumption safety.

As an embodiment, the size of the pressure relief opening 23 is larger than that of the explosion-proof valve 11, and a certain gap is formed between the explosion-proof valve 11 and the pressure relief opening 23, so that the size of the pressure relief opening 23 is designed to be larger than that of the explosion-proof valve 11, and thus, when high-temperature and high-pressure gas is injected from the pressure relief opening 23, the pressure relief opening 23 can guide all the high-temperature and high-pressure gas into the pressure relief channel 21, so that the high-temperature and high-pressure gas can be prevented from being injected to the outside of the pressure relief opening 23, and the power utilization safety of the battery module is improved.

As an implementation manner, each pressure relief opening 23 is provided with an explosion-proof membrane, and by providing the explosion-proof membrane, when the electrical core 1 is out of control due to heat, the high-temperature and high-pressure gas injected by the electrical core can correspondingly burst the explosion-proof membrane, so that the high-temperature and high-pressure gas enters the pressure relief channel 21 through the pressure relief opening 23, and flows out of the pressure relief channel 21 into the first liquid-cooling plate 3. If not set up the rupture membrane, when electric core 1 takes place the thermal runaway, its high temperature high pressure gas that sprays gets into pressure release channel 21 by the pressure release mouth 23 that corresponds after, partly high temperature high pressure gas can be sprayed to the explosion-proof valve 11 of electric core 1 that corresponds by remaining pressure release mouth 23 on, cause the influence to other electric cores 1, cause the postcombustion again easily simultaneously, through setting up explosion-proof valve 11 to improve the security performance of battery module.

Optionally, when a certain or some electric cores 1 have a problem of thermal runaway, the rupture membrane on the corresponding pressure relief port 23 can be broken, the high-temperature and high-pressure gas injected by the rupture membrane enters the pressure relief channel 21 from the pressure relief port 23 and is discharged into the first liquid cooling plate 3, so that the safety of the battery module is improved, and meanwhile, the rupture membrane which is not broken can protect the electric core 1 at the corresponding end, so that the electricity safety of the battery module is further improved.

Optionally, the explosion pressure of the explosion-proof membrane is less than or equal to 40kPa, and the area size of the explosion-proof membrane can be optimized by combining the actual sizes of the explosion-proof valve 11 and the liquid injection hole.

As shown in fig. 6, as an implementation mode, still be equipped with second liquid cooling board 4 between two adjacent electric cores 1, the position that second liquid cooling board 4 is close to both ends is equipped with inlet tube and outlet pipe respectively, is linked together through inlet tube and outlet pipe between second liquid cooling board 4 and the first liquid cooling board 3, and through setting up second liquid cooling board 4, second liquid cooling board 4 can carry out the heat transfer to one side of two adjacent electric cores 1 to further improve the heat exchange efficiency to electric core subassembly.

Heat transfer medium flows between first liquid cooling board 3 and a plurality of second liquid cooling board 4, and when the problem of thermal runaway appeared in a certain electric core 1 or several electric cores 1, its high temperature high-pressure gas that sprays can enter into in the first liquid cooling board 3 to cool off high temperature high-pressure gas, can play the effect of pressure release simultaneously again.

As an embodiment, the one end that protruding section 22 and first liquid cold drawing 3 are linked together still is equipped with one-way discharge valve, and when the thermal runaway problem appeared in electric core 1, its high temperature high-pressure gas that sprays can make the high temperature high-pressure gas in the pressure release passageway 21 flow into to first liquid cold drawing 3 through one-way discharge valve in, but the heat transfer medium in the first liquid cold drawing 3 can't flow into to the pressure release passageway 21 in to further improve battery module's security performance.

As shown in fig. 5 and 8, as an embodiment, the battery module further includes a bus bar 5, and the bus bar 5 is integrally formed with the harness isolation plate 2, so that the assembly steps of the battery module when being grouped can be reduced, and the labor cost can also be reduced; busbar 5 is including being located two laminating sections 51 and linkage segment, two laminating sections 51 are located the both ends of linkage segment respectively, and with linkage segment fixed connection, pencil division board 2 still is equipped with a plurality of through-holes 24, through-hole 24 is used for holding busbar 5, make busbar 5 be connected with the electrode terminal electricity of electric core 1, two laminating sections 51 are located two through-holes 24 that pencil division board 2 is adjacent respectively, through setting up through-hole 24, for busbar 5 provides stable support, the shared space volume of busbar 5 has also been reduced simultaneously.

Alternatively, the electrode terminals include a positive terminal 12 and a negative terminal 13.

As shown in fig. 1 and 5, as an embodiment, the top of the wire harness isolation plate 2 is further provided with a folding edge 25, the folding edge 25 is located on one side opposite to the protruding section 22, and when the wire harness isolation plate 2 is connected with the electric core assembly, the folding edge 25 is used for abutting against the edge of the upper end of the electric core assembly, so that the structure of the battery module is more stable, and the reliability between the wire harness isolation plate 2 and the electric core assembly is increased.

As shown in fig. 8, as an embodiment, a groove 26 for accommodating an FPC6 (Flexible Printed Circuit board) is provided on the flange 25, and the groove 26 is provided on the flange 25, so that the FPC6 can be accommodated in the groove 26, on one hand, the FPC6 is prevented from being exposed outside the wiring harness isolation board 2, thereby improving the safety of the battery module, on the other hand, the occupied volume of the FPC6 is reduced, and the space utilization rate of the battery module is improved.

The groove 26 is formed in the top of the wiring harness isolation plate 2, when the FPC6 is installed in the groove 26 and the bus bar 5 is installed in the through hole 24, the FPC6 and the bus bar 5 are in a spaced state in the vertical direction, the groove 26 can enable the FPC6 and the bus bar 5 to be avoided, and the phenomenon that the FPC65 is in contact with the bus bar 5 to cause short circuit of the battery module is avoided; simultaneously also can avoid the electromagnetism to FPC 6's interference, further improve the security of battery module, in addition, when taking place thermal failure, pressure release channel 21 and first liquid cold drawing 3 intercommunication, and recess 26 sets up in the relative one side of first liquid cold drawing 3, and recess 26 can play the guard action to FPC6, can not influence FPC 6's normal data transmission and BMS alarm strategy implementation.

As shown in fig. 8, as an embodiment, the battery module further includes an FPC6, the FPC6 is installed in the groove 26, the FPC6 is connected to the bus bar 5 through a plurality of conductive sheets 7, and the conductive sheets 7 are used for sampling voltage signals of the electric core 1.

In addition, FPC6 sets up at vertical direction interval with busbar 5, improves FPC6 and busbar 5's spacing distance, effectively keeps apart electrical interference.

Optionally, the through hole 24 is communicated with the groove 26 through a plurality of grooves, and each groove is used for mounting the conducting plate 7, so that the conducting plate 7 can be protected, and the space utilization rate of the wire harness isolation plate 2 can be improved.

Optionally, the battery module further comprises a frame, and the frame encloses an accommodating space for accommodating the battery assembly and the second liquid cooling plates 4, so that the stability of the battery module is improved.

In a second aspect, an embodiment of the present application introduces a battery pack, where the battery pack includes a plurality of battery modules described in the first aspect.

Optionally, the number of the battery modules is set to four, and of course, different numbers of battery modules can be set according to actual use requirements.

In a third aspect, an embodiment of the present application describes an electric device, where the battery pack described in the second aspect is installed in the electric device, and the battery pack provides electric energy for the electric device, and optionally, the electric device includes an automobile or a ship.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A battery module, comprising:

the battery module comprises a battery module body and a battery module body, wherein the battery module body comprises a plurality of battery cores, and the plurality of battery cores are stacked along the length direction of the battery module body and extend along the width direction of the battery module body;

2. The battery module according to claim 1, wherein the harness isolation plate comprises a protruding section, the protruding section is a through structure, one end of the protruding section is connected with the pressure relief channel, and the other end of the protruding section is communicated with the first liquid cooling plate.

3. The battery module according to claim 1 or 2, wherein a plurality of pressure relief ports are further formed in one side of the wire harness isolation plate, and the plurality of pressure relief ports are communicated with the pressure relief channel;

every the length direction's of electricity core one end all is equipped with explosion-proof valve, and is a plurality of explosion-proof valve homogeneous on the electricity core corresponds towards same one end a plurality of on the pencil division board the pressure release mouth sets up.

4. The battery module according to claim 3, wherein the pressure relief port is formed such that a cross-sectional area thereof gradually decreases from one end away from the pressure relief channel toward the other end.

5. The battery module according to claim 3, wherein the size of the pressure relief port is larger than the size of the explosion-proof valve.

6. The battery module according to claim 3, wherein each pressure relief vent is provided with an explosion-proof membrane at a position.

7. The battery module according to claim 4, wherein a second liquid cooling plate is arranged between two adjacent electric cores, and the second liquid cooling plate is communicated with the first liquid cooling plate.

8. The battery module as set forth in claim 2, wherein a one-way exhaust valve is further disposed at an end of the protruding section communicating with the first liquid cooling plate.

9. The battery module according to claim 1 or 2, further comprising a plurality of bus bars provided integrally with the wire harness isolation plate, the wire harness isolation plate further being provided with a plurality of through holes for receiving the bus bars.

10. The battery module of claim 9, wherein the bus bar comprises two attachment sections, the attachment sections being electrically connected to the electrode terminals of the cells, the attachment sections being located within the through-holes.

11. The battery module according to claim 1 or 2, wherein the harness insulation plate is provided with a folded edge at a side opposite to the protruding section for abutting against the electric core assembly.

12. The battery module according to claim 11, wherein the flange is provided with a groove for receiving an FPC.

13. The battery module according to claim 12, wherein the FPC is electrically connected to the bus bar through a conductive sheet.

14. A battery pack comprising at least one battery module according to any one of claims 1 to 13.

15. An electrical device comprising the battery pack of claim 14, wherein the battery pack provides electrical energy to the electrical device.