CN219513306U - Battery, battery module and power system - Google Patents

Abstract

The utility model provides a battery, a battery module and a power system, and relates to the technical field of batteries. The battery comprises a cover plate and a liquid injection connecting assembly, and a liquid injection hole is formed in the cover plate; the liquid injection connecting assembly comprises a liquid injection valve and a liquid injection pipe, wherein the first end of the liquid injection pipe is communicated with the first interface of the liquid injection valve, and the second end of the liquid injection pipe is in sealing connection with the liquid injection hole. The utility model can solve the problems of the prior art that the battery can only be filled with electrolyte once, and enough electrolyte is filled, so that the weight of the battery core is increased, the energy density is reduced, and the capacity attenuation is accelerated.

Description

Battery, battery module and power system

Technical Field

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

Background

Lithium ion batteries are rechargeable batteries, and are widely applied to various electronic products today with advanced technology.

At present, the cover plate of the lithium ion battery is provided with a liquid injection hole, after the battery cell is injected with liquid, the liquid injection hole is welded and sealed by using a sealing sheet, and the battery cell can not be filled with liquid in later period, so that enough electrolyte is injected in earlier period to meet the service life of the battery cell, and thus, two problems can occur: firstly, the weight of the battery cell is increased, the energy density is reduced, and the market competitiveness is reduced; second, during the lifetime, the electrolyte may experience different environments, and there is a possibility of deterioration, which may cause accelerated capacity fade.

Disclosure of Invention

The utility model aims to overcome the defects that in the prior art, a battery can only be filled with electrolyte once, and enough electrolyte is filled, so that the weight of a battery core is increased, the energy density is reduced and the capacity attenuation is accelerated.

In order to solve the above problems, a first aspect of the present utility model provides a battery, including a cover plate and a liquid injection connection assembly, wherein a liquid injection hole is formed in the cover plate; the liquid injection connecting assembly comprises a liquid injection valve and a liquid injection pipe, wherein the first end of the liquid injection pipe is communicated with the first interface of the liquid injection valve, and the second end of the liquid injection pipe is in sealing connection with the liquid injection hole.

Optionally, an internal thread is arranged on the inner wall of the liquid injection hole; the liquid injection pipe is provided with external threads, and the liquid injection pipe is in threaded connection with the liquid injection hole.

Optionally, the liquid injection hole is a step hole, the liquid injection hole comprises a first hole section matched with the liquid injection pipe and a second hole section arranged above the first hole section, and the inner wall of the first hole section is provided with an internal thread; the liquid injection pipe is provided with a sealing convex edge, and the sealing convex edge is in butt joint with the second hole section for sealing.

Optionally, the dispensing device further comprises a dispensing assembly, the dispensing assembly is provided with a plurality of control valves, the control valves are provided with first interfaces and second interfaces, and the first interfaces of the plurality of control valves are respectively connected with the liquid injection valves through connecting pipes.

Optionally, the second port of the liquid injection valve is connected with the distribution assembly through a connecting main pipe, the plurality of connecting pipes are connected to the connecting main pipe in parallel, and the connecting main pipe is provided with a main valve.

Optionally, three control valves are provided, and second interfaces of the three control valves are respectively used for connecting the liquid injection system, the air extraction system and the air inflation system.

Optionally, the distribution assembly comprises a four-way pipe, a first port of the four-way pipe is connected with the connecting main pipe, and the other three ports are respectively connected with the three control valves.

A second aspect of the utility model provides a battery module comprising a plurality of batteries as set forth in any one of the above technical solutions.

Optionally, the device comprises a distribution assembly, and the liquid injection valves of the batteries are connected with the distribution assembly through connecting branch pipes; alternatively, each cell is connected to a dispensing assembly.

A third aspect of the present utility model provides a power system, including the battery according to any one of the above technical solutions, or the battery module according to any one of the above technical solutions.

The utility model has the following advantages:

1. according to the technical scheme, one end of the liquid injection pipe is connected with the liquid injection hole, and the other end of the liquid injection pipe is connected with the liquid injection valve, so that the opening and closing of the liquid injection hole can be controlled by controlling the opening and closing of the liquid injection valve, and electrolyte can be injected into the battery through connecting the liquid injection valve with the liquid injection system, so that the electrolyte can be supplemented to the battery in the use process, repeated liquid injection and repeated liquid injection of the battery are realized, and the service life of the battery is prolonged; in addition, since it is not necessary to inject an excessive amount of electrolyte into the battery at a time, the weight of the battery can be reduced, the energy density of the battery can be increased, and the rate of decay of the battery capacity can be reduced.

2. Adopt threaded connection between notes liquid pipe and the notes liquid hole, can improve the assembly speed between notes liquid pipe and the notes liquid hole, and simple structure easily makes.

3. The liquid injection hole is set to be a step hole, the liquid injection pipe is provided with a sealing convex edge, the sealing convex edge is abutted with a second hole section of the liquid injection hole, sealing connection between the liquid injection pipe and the liquid injection hole is realized, the sealing performance of the battery is improved, liquid leakage is prevented, and the safety performance of the battery is improved.

4. By arranging the distribution assembly, three control valves are arranged in the distribution assembly, and second interfaces of the three control valves can be respectively connected with the liquid injection system, the air extraction system and the inflation system. The three functions of electrolyte supplementing, vacuumizing and inflating can be realized by controlling the opening and closing of the control valves corresponding to the three systems. The distribution assembly can be used for connecting a liquid injection system to realize repeated and repeated electrolyte replenishment in the battery, so that the service life of the battery is prolonged; the distribution assembly can be used for connecting an air extraction system, and timely extracting air generated in the battery when the internal air pressure of the battery is increased, so that the battery is prevented from swelling or expanding due to overlarge internal pressure, the thickness of the battery core is prevented from being increased, and the safety performance of the battery is improved; the distribution assembly can be used for connecting an inflation system, when the temperature in the battery suddenly rises and a thermal runaway point occurs at a high probability, insulating gas is filled into the battery, oxygen in three elements of combustion is cut off, combustion and explosion of the battery are delayed, escape time of evacuees is prolonged, and battery performance is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model 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 utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a top view of a battery body in a battery provided in an embodiment of the present utility model;

fig. 2 shows a front view of a battery body in a battery provided in an embodiment of the present utility model;

fig. 3 shows a side view of a battery body in the battery provided in the embodiment of the utility model;

fig. 4 shows a cross-sectional view of the liquid injection hole of the battery body of fig. 2;

fig. 5 is a schematic structural view showing a liquid injection connection assembly of a battery according to an embodiment of the present utility model;

fig. 6 is a schematic view showing the structure of a battery provided in an embodiment of the present utility model;

fig. 7 shows an enlarged view of a portion of the dispensing assembly of fig. 6.

Reference numerals illustrate:

1. a cover plate; 11. a liquid injection hole; 111. a first bore section; 112. a second bore section; 2. a liquid injection connection assembly; 21. a liquid injection valve; 22. a liquid injection pipe; 221. sealing the convex edge; 3. a dispensing assembly; 31. a control valve; 311. a first control valve; 312. a second control valve; 313. a third control valve; 32. connecting a main pipe; 33. a main valve; 34. a four-way pipe; 4. a plastic ring; 5. a pole; 10. a battery; 101. a battery body.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, 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 utility model 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 utility model. 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 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 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 utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

For the purpose of illustrating the concepts of the utility model, the drawings and detailed description are to be regarded as illustrative in nature and not as restrictive.

Example 1

A battery 10, referring to fig. 1-7, comprises a cover plate 1 and a liquid injection connecting assembly 2, wherein a liquid injection hole 11 is arranged on the cover plate 1; the liquid filling connecting assembly 2 comprises a liquid filling valve 21 and a liquid filling pipe 22, wherein a first end of the liquid filling pipe 22 is communicated with a first interface of the liquid filling valve 21, and a second end of the liquid filling pipe 22 is in sealing connection with the liquid filling hole 11.

By using the technical scheme of the utility model, one end of the liquid injection pipe 22 is connected with the liquid injection hole 11, and the other end of the liquid injection pipe is connected with the liquid injection valve 21 by arranging the liquid injection connecting component 2, so that the opening and closing of the liquid injection hole 11 can be controlled by controlling the opening and closing of the liquid injection valve 21, and therefore, electrolyte can be injected into the battery 10 by connecting the liquid injection valve 21 with a liquid injection system, electrolyte can be supplemented to the battery 10 in the use process, repeated and repeated liquid injection of the battery 10 is realized, and the service life of the battery is prolonged; further, since it is not necessary to inject an excessive amount of electrolyte into the battery 10 at a time, the weight of the battery 10 can be reduced, the energy density of the battery 10 can be increased, and the rate of decay of the capacity of the battery 10 can be reduced.

Specifically, in the present embodiment, the battery 10 includes a battery body 101, and the battery body 101 includes a housing, a cover plate 1 disposed at an end of the housing, and a battery cell disposed in the housing. The cover plate 1 is provided with a pole 5 electrically connected with the battery cell. The electrode post 5 includes a positive electrode post and a negative electrode post. In this embodiment, referring to fig. 1, both the positive electrode post and the negative electrode post are disposed on the cover plate 1 at the same end. Of course, the designer can adjust the positions of the positive electrode post and the negative electrode post according to actual needs, and the positions are not limited herein.

The cover plate 1 of the conventional battery 10 is also provided with an explosion-proof valve. The explosion-proof valve occupies a larger space, and the distance between the liquid injection hole 11 and the explosion-proof valve is limited due to the limited size of the cover plate 1. Electrolyte overflows the cover plate 1 in the trial production process, and the explosion-proof valve is kept inside, so that the explosion-proof valve is polluted, and the battery cell is scrapped. In this embodiment, the liquid injection hole 11 is connected with the liquid injection connection assembly 2, which can effectively solve the above-mentioned problems and prolong the service life of the battery 10.

Optionally, an internal thread is arranged on the inner wall of the liquid injection hole 11; the liquid injection pipe 22 is provided with external threads, and the liquid injection pipe 22 is in threaded connection with the liquid injection hole 11. The liquid injection pipe 22 and the liquid injection hole 11 are connected through threads, so that the assembly speed between the liquid injection pipe 22 and the liquid injection hole 11 can be improved, and the structure is simple and the manufacturing is easy.

Alternatively, referring to fig. 4, the liquid injection hole 11 is a stepped hole, and the liquid injection hole 11 includes a first hole section 111 matched with the liquid injection pipe 22 and a second hole section 112 arranged above the first hole section 111; the internal thread is provided on the inner wall of the first bore section 111. Referring to fig. 5, the liquid filling pipe 22 is provided with a sealing flange 221, and the sealing flange 221 is in abutting sealing with the second hole section 112. After the liquid injection pipe 22 is screwed in the first hole section 111, the sealing convex edge 221 is tightly abutted with the second hole section 112, so that sealing is realized.

Optionally, the shape of the outer sidewall of the sealing bead 221 is adapted to the shape of the inner sidewall of the second bore section 112. Specifically, in this embodiment, the second hole section 112 is a circular hole, and the inner side wall thereof is a circumferential surface. The sealing flange 221 is an annular flange, and the outer side wall thereof is a circumferential surface. Optionally, the sealing bead 221 and the second bore section 112 are interference fit. Of course, the designer may adjust the shape and size of the sealing bead 221 according to actual needs, without limitation.

Optionally, the sealing flange 221 is made of rubber.

Optionally, a plastic ring 4 is arranged below the first hole section 111 of the liquid injection hole 11, so that insulation connection between the liquid injection pipe 22 and the battery cell is realized.

Specifically, in this embodiment, the thickness of the cover plate 1 is 1-3 mm, the height is 1-5 mm, the inner diameter of the first hole section 111 of the liquid injection hole 11 is 3-5 mm, the inner diameter of the second hole section 112 is 8-10 mm, and the outer diameter of the sealing flange 221 is 8.1-10.1 mm. The external diameter of the external thread of the pouring tube 22 is 2.9-4.9 mm.

The liquid injection hole 11 is set to be a step hole, the liquid injection pipe 22 is provided with the sealing convex edge 221, the sealing convex edge 221 is abutted with the second hole section 112 of the liquid injection hole 11, so that the sealing connection between the liquid injection pipe 22 and the liquid injection hole 11 is realized, the sealing performance of the battery 10 is improved, liquid leakage is prevented, and the safety performance of the battery 10 is improved.

Optionally, referring to fig. 6 and 7, the battery 10 provided in this embodiment further includes a dispensing assembly 3, where the dispensing assembly 3 is provided with a plurality of control valves 31, the control valves 31 have a first interface and a second interface, and the first interfaces of the plurality of control valves 31 are respectively connected with the filling valve 21 through connection pipes. Wherein "a plurality" includes two.

Optionally, in this embodiment, three control valves 31 are provided, and second interfaces of the three control valves 31 are respectively used for connecting the liquid injection system, the air extraction system and the air inflation system. Specifically, the three control valves 31 are a first control valve 311 for connecting to the liquid injection system, a second control valve 312 for connecting to the air extraction system, and a third control valve 313 for connecting to the air inflation system, respectively.

Specifically, the liquid injection system comprises an electrolyte storage bottle. The pumping system includes a vacuum pump. The inflation system includes an insulating gas pressure bottle, such as a nitrogen pressure bottle.

To the electricity core of taking explosion-proof valve structure, the electricity core can not avoid producing gas in the use, can not in time investigation, can increase the inside pressure of electricity core, leads to electricity core bulge deformation, and the inside expansion force of battery module of constituteing by battery 10 increases, and cycle life decay accelerates, reaches the valve opening pressure of explosion-proof valve, and the explosion-proof valve opens, and at this moment, the electricity core is scrapped, can't continue to use. The explosion-proof valve also has the possibility of thermal runaway, being unable to be opened in time, causing greater risk. The battery 10 in this embodiment is connected with the air extraction system, so that the air in the battery core can be timely extracted, the above problems can be solved, the safety performance of the battery 10 is improved, and the service life of the battery 10 is prolonged.

In this embodiment, the first control valve 311 is controlled to be opened or closed, so that electrolyte can be replenished to the battery core during the use process, and the service life of the battery core is delayed; the second control valve 312 is controlled to be opened and closed, so that the gas in the battery cell can be timely checked, and the size of the battery cell and the expansion force of the battery module are maintained without obvious change; the third electromagnetic valve is controlled to be opened and closed, so that insulating gas such as nitrogen, argon and other inert gases can be injected into the battery cell when thermal runaway occurs, the degree of thermal runaway is slowed down, and longer time is striven for escape of customers.

In this embodiment, by providing the dispensing assembly 3, three control valves 31 are provided in the dispensing assembly 3, and the second interfaces of the three control valves 31 can be connected to the liquid injection system, the air extraction system and the air inflation system, respectively. By controlling the opening and closing of the control valves 31 corresponding to the three systems, three functions of electrolyte replenishment, vacuum pumping and air charging can be realized. The vacuumizing can be used for timely pumping out gas generated in the battery 10 when the internal air pressure of the battery 10 is increased, so that the battery 10 is prevented from swelling or expanding due to the overlarge internal pressure, the battery core is prevented from becoming large, and the safety performance of the battery 10 is improved; the charging function can be used for charging insulating gas into the battery 10, so that when the temperature in the battery 10 suddenly rises and a thermal runaway point occurs at a high probability, oxygen in three elements of combustion is cut off, the combustion and explosion of the battery 10 are delayed, the escape time of an evacuee is prolonged, and the performance of the battery 10 is further improved.

Alternatively, the control valve 31 employs a solenoid valve. This arrangement is advantageous in improving the degree of automation of the power system to which the battery 10 provided in the present embodiment is applied. The designer can set up a sensor or other signal acquisition devices as required, and the signals fed back by the sensor or other signal acquisition devices are used for respectively controlling the automatic opening and closing of the first control valve 311, the second control valve 312 or the third control valve 313, so that electrolyte is timely replenished, vacuumized or insulating gas is filled into the battery 10.

Optionally, the second port of the filling valve 21 is connected to the dispensing assembly 3 via a connecting manifold 32, a plurality of connecting pipes being connected in parallel to the connecting manifold 32, the connecting manifold 32 being provided with a main valve 33. When the fluid supplementing, vacuumizing or inflating operation is required, the main valve 33 on the connecting main pipe 32 and the fluid injection valve 21 in the fluid injection connecting assembly 2 are in an open state, and at this time, the connecting main pipe 32, the fluid injection pipe 22 and the battery cell are communicated, so that corresponding operation can be performed. The total valve 33 and the filling valve 21 are closed at the rest.

Optionally, the connecting manifold 32 is a hose, so that when the battery 10 provided by the embodiments is adopted to form a battery module, the hose is convenient to arrange, and compared with a hard tube, the layout occupation space of the connecting manifold 32 can be reduced, and the volume of the battery module is reduced.

Alternatively, referring to fig. 6 and 7, the dispensing assembly 3 comprises a four-way pipe 34, a first port of the four-way pipe 34 being connected to the connecting manifold 32, and the remaining three ports being connected to three control valves 31, respectively.

The specific operation process comprises the following steps:

(1) When the battery 10 provided in the present embodiment is applied to an automobile, the service life of the battery 10 can be determined according to the mileage of the automobile. Of course, the service life of the battery 10 may be determined in other ways. When the service life of the battery 10 reaches the middle stage, the filling valve 21, the main valve 33 and the first control valve 311 can be opened, and a fixed amount of electrolyte can be filled into the battery cell through the connecting manifold 32, the filling pipe 22 and the filling hole 11. Therefore, the proportion of active lithium in the battery cell can be increased, and the service life and the cycle life of the battery cell are delayed. After the completion of the injection, the injection valve 21, the total valve 33, and the first control valve 311 are closed.

(2) When the pressure inside the battery 10 or the expansion force of the battery module is monitored to increase, the filling valve 21 is opened, and the gas inside the battery cell is transferred into the connecting manifold 32. The filling valve 21, the main valve 33 and the second control valve 312 are opened, the connecting manifold 32 and the battery cell are evacuated, and after the completion of the operation, the filling valve 21, the main valve 33 and the second control valve 312 are closed. The gas generated in the battery 10 can be regularly checked, the thickness of the battery core and the expansion force of the battery module are kept unchanged, the opening of the welding mark of the cover plate 1 of the battery core caused by the expansion of the gas in the battery core is properly delayed, the risk of thermal runaway is reduced, and meanwhile, the service life of the battery core can be prolonged.

(3) When a sharp increase in cell pressure is monitored and the temperature begins to rise, there is a significant increase in the probability of thermal runaway occurring. The filling valve 21, the main valve 33 and the third control valve 313 are opened, and an insulating gas such as nitrogen is filled into the battery cell, thereby delaying the occurrence time of thermal runaway and leaving the car owner enough time to escape.

Example 2

A battery module comprising a plurality of the batteries 10 described in embodiment 1.

Alternatively, the battery module includes one dispensing assembly 3, and the liquid injection valves 21 of the plurality of batteries 10 are connected to the dispensing assembly 3 through connection branches.

Of course, each of the batteries 10 may be connected to one of the distribution units 3.

Example 3

A power system comprising the battery 10 of embodiment 1 or the battery module of embodiment 2.

According to the above description, the present patent application has the following advantages:

1. by connecting the liquid injection valve 21 with the liquid injection system and injecting electrolyte into the battery 10, the electrolyte can be supplemented to the battery cell in the use process, so that repeated and repeated liquid injection of the battery 10 is realized, and the service life of the battery cell is prolonged; further, since it is not necessary to inject an excessive amount of electrolyte into the battery 10 at a time, the weight of the battery 10 can be reduced, the energy density of the battery 10 can be increased, and the rate of decay of the capacity of the battery 10 can be reduced.

2. The liquid injection pipe 22 and the liquid injection hole 11 are connected through threads, so that the assembly speed between the liquid injection pipe 22 and the liquid injection hole 11 can be improved, and the structure is simple and the manufacturing is easy.

3. The liquid injection hole 11 is set to be a step hole, the liquid injection pipe 22 is provided with the sealing convex edge 221, the sealing convex edge 221 is abutted with the second hole section 112 of the liquid injection hole 11, so that the sealing connection between the liquid injection pipe 22 and the liquid injection hole 11 is realized, the sealing performance of the battery 10 is improved, liquid leakage is prevented, and the safety performance of the battery 10 is improved.

4. The dispensing assembly 3 may be used in conjunction with a liquid injection system to provide repeated and multiple replenishment of electrolyte into the battery 10, thereby extending the useful life of the battery 10.

5. The distribution assembly 3 can be used for connecting an air extraction system, and timely extracts air generated in the battery 10 when the internal air pressure of the battery 10 is increased, so that the battery 10 is prevented from swelling or expanding due to overlarge internal pressure, the thickness of a battery core is prevented from being increased, and the safety performance of the battery 10 is improved;

6. the distribution assembly 3 can be used for connecting an inflation system, when the temperature in the battery 10 suddenly rises and a thermal runaway point occurs at a high probability, insulating gas is filled into the battery 10, the combustion and explosion of the battery 10 are delayed, the escape time of an evacuee is prolonged, and the performance of the battery 10 is further improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A battery, comprising:

the cover plate is provided with a liquid injection hole;

the liquid injection connecting assembly comprises a liquid injection valve and a liquid injection pipe, wherein the first end of the liquid injection pipe is communicated with the first interface of the liquid injection valve, and the second end of the liquid injection pipe is in sealing connection with the liquid injection hole;

the liquid injection hole is a step hole and comprises a first hole section matched with the liquid injection pipe and a second hole section arranged above the first hole section; the liquid injection pipe is provided with a sealing convex edge, and the sealing convex edge is in butt joint with the second hole section for sealing.

2. The battery according to claim 1, wherein the inner wall of the liquid injection hole is provided with internal threads; the liquid injection pipe is provided with external threads, and the liquid injection pipe is in threaded connection with the liquid injection hole.

3. The battery of claim 2, wherein an inner wall of the first bore section is provided with internal threads.

4. A battery according to any one of claims 1-3, further comprising a dispensing assembly provided with a plurality of control valves having a first port and a second port, the first ports of the plurality of control valves being connected to the filling valves by connecting pipes, respectively.

5. The battery of claim 4, wherein the second port of the fill valve is connected to the dispensing assembly by a connecting manifold to which a plurality of the connecting tubes are connected in parallel, the connecting manifold having a main valve.

6. The battery of claim 4, wherein three of said control valves are provided, and said second ports of three of said control valves are respectively connected to a liquid injection system, a gas extraction system and a gas filling system.

7. The battery of claim 5, wherein the distribution assembly comprises a four-way pipe, a first port of the four-way pipe being connected to the connecting manifold, and the remaining three ports being connected to three of the control valves, respectively.

8. A battery module comprising a plurality of the batteries of any one of claims 1-7.

9. The battery module according to claim 8, comprising a distribution assembly to which the liquid injection valves of the plurality of batteries are connected through connection branches;

or, each of the batteries is connected to a dispensing assembly.

10. A power system comprising the battery according to any one of claims 1 to 7, or the battery module according to any one of claims 8 and 9.