Self-repairing module battery, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a self-repairing module battery, a battery pack and electric equipment, and the self-repairing module battery comprises a battery shell which is provided with a containing cavity; the self-repairing assembly is connected with the battery shell, the self-repairing assembly is configured in the accommodating cavity, and the self-repairing assembly is configured to be used for accommodating replenishing liquid; and the battery assembly is configured in the accommodating cavity, and when the battery assembly reacts to enable the air pressure in the battery shell to reach a preset value, the self-repairing assembly is conducted, and the replenishing liquid in the self-repairing assembly is replenished into the accommodating cavity. The method can avoid the obvious difference of battery performance caused by the difference of the replenishment liquid amount in the initial period and the later period of circulation due to the overlarge initial replenishment liquid amount, can also avoid the risk of diving in the later period of the battery circulation due to the insufficient electrolyte amount, and improves the performance stability of the battery in the using process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a self-repairing module battery, a battery pack and an electric device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] In the development of battery technology, in addition to improving the safety of the battery, the performance of the battery is also a problem that cannot be ignored. Therefore, how to improve the performance of the battery is a technical problem that needs to be solved in battery technology. CONTENT OF THE INVENTION

[0004] The purpose of the embodiments of the present application is to provide a self-repairing module battery, a battery pack and an electric device, which can avoid the obvious difference in battery performance caused by the difference in the amount of replenishing liquid between the initial stage and the later stage of the cycle due to the excessive initial amount of replenishing liquid, and can also avoid the risk of diving in the later stage of the battery cycle caused by the insufficient amount of electrolyte, and improve the performance stability of the battery during use.

[0005] In the first aspect, the embodiments of the present application provide a self-repairing module battery, comprising: a battery shell configured with a receiving cavity; a self-repairing assembly connected to the battery shell, the self-repairing assembly being configured in the receiving cavity, and the self-repairing assembly being configured to accommodate replenishing liquid; a battery assembly configured in the receiving cavity, and when the battery assembly reacts to make the internal gas pressure of the battery shell reach a preset value, the self-repairing assembly is turned on and replenishes the replenishing liquid in the self-repairing assembly to the receiving cavity.

[0006] In the above implementation process, the self-repairing assembly and the battery assembly are both configured in the receiving cavity of the battery shell. When the self-repairing module battery is used in a cycle, gas is continuously produced due to the continuous electrochemical reaction in the battery assembly, and the internal gas pressure of the battery shell continuously increases. When the internal gas pressure of the battery shell increases to the preset value of the self-repairing assembly, the internal gas pressure will push to open the self-repairing assembly, so that the replenishing liquid in the self-repairing assembly flows to the receiving cavity and contacts part of the structure of the battery assembly. With the replenishment of the replenishing liquid to the battery assembly, the internal reaction of the battery assembly is improved, and the gas pressure decreases. When the electrochemical reaction continues and the preset value of the gas pressure is reached again, the self-repairing assembly is opened again. In this way, the battery assembly is continuously repaired, which can avoid the obvious difference in battery performance caused by the difference in the amount of replenishing liquid between the initial stage and the later stage of the cycle due to the excessive initial amount of replenishing liquid, and can also avoid the risk of diving in the later stage of the battery cycle caused by the insufficient amount of electrolyte, and improve the performance stability of the battery during use.

[0007] In some embodiments, the self-repairing assembly comprises a self-repairing shell, a first one-way valve and a second one-way valve, the first one-way valve and the second one-way valve are connected to the self-repairing shell, and the height of the first one-way valve is higher than the height of the supplement liquid in the self-repairing shell, and the height of the second one-way valve is lower than the height of the supplement liquid in the self-repairing shell.

[0008] In the above implementation process, the first one-way valve and the second one-way valve are respectively connected to the self-repairing shell, the supplement liquid is contained in the self-repairing shell, the battery assembly continuously generates an electrochemical reaction to cause gas production, the internal gas pressure of the battery shell continuously increases, when the internal gas pressure of the battery shell increases to a preset value of the self-repairing assembly, the internal gas pressure pushes to open the first one-way valve and the second one-way valve, so that the supplement liquid flows through the second one-way valve to the containing cavity and contacts part of the structure of the battery assembly, the internal reaction of the battery assembly is improved, and the gas pressure decreases. It can avoid that the initial supplement liquid amount is too large, and the battery performance is obviously different due to the difference in supplement liquid amount between the initial stage and the later stage of circulation, and can also avoid the risk of diving of the battery in the later stage of circulation due to insufficient electrolyte amount, and improve the performance stability of the battery in use.

[0009] In some embodiments, the conduction direction of the first one-way valve is consistent with the conduction direction of the second one-way valve.

[0010] In the above implementation process, the first one-way valve and the second one-way valve can be opened at the same time when the internal gas pressure of the battery shell reaches the preset value, and the supplement liquid can flow to the containing cavity through the second one-way valve, the internal reaction of the battery assembly is improved, and the gas pressure decreases. It can realize automatic and dynamic injection of supplement liquid, relieve the battery aging process, slow down the attenuation of battery performance, keep the battery performance close to the initial state, and avoid the phenomenon of intensified thermal runaway caused by the use of more electrolyte amount for long cycle of the battery.

[0011] In some embodiments, the pressure value of the first one-way valve is consistent with the pressure value of the second one-way valve, and the pressure value includes 0.12Mpa-0.35Mpa. It can realize automatic and dynamic injection of supplement liquid, relieve the battery aging process, slow down the attenuation of battery performance, keep the battery performance close to the initial state, and avoid the phenomenon of intensified thermal runaway caused by the use of more electrolyte amount for long cycle of the battery.

[0012] In some embodiments, the battery shell comprises a shell main part and a battery top cover, the shell main part is connected to the battery top cover, and the self-repairing assembly is connected to the battery top cover.

[0013] In some embodiments, the battery assembly comprises a bare cell and an electrolyte, the bare cell and the electrolyte are arranged in the containing cavity, and the bare cell and the self-repairing assembly form a gap.

[0014] In some embodiments, the battery assembly further comprises a negative electrode structure, the negative electrode structure connects the negative electrode tab of the bare battery cell, and the negative electrode structure is arranged on the battery top cover.

[0015] In some embodiments, the battery assembly further comprises a positive electrode structure, the positive electrode structure connects the positive electrode tab of the bare battery cell, and the positive electrode structure is arranged on the battery top cover.

[0016] In some embodiments, the battery assembly further comprises an explosion-proof valve, the explosion-proof valve is connected to the battery top cover. It plays a safety protection role, and when the internal pressure of the battery is abnormally large, it plays a role in releasing pressure and reducing the power of battery thermal runaway.

[0017] In a second aspect, the application also provides a battery pack comprising the self-repairing module battery as described in any one of the above.

[0018] Since the battery pack provided in the second aspect comprises the self-repairing module battery, the battery pack has all the technical effects of the self-repairing module battery, which will not be repeated here.

[0019] In a third aspect, the application also provides a power consumption device comprising the battery pack as described above.

[0020] Since the power consumption device provided in the third aspect comprises the battery pack, the power consumption device has all the technical effects of the battery pack, which will not be repeated here.

[0021] Other features and advantages of the present disclosure will be described in the following description, or can be inferred or determined without doubt from the description, or can be known by implementing the above-mentioned technologies of the present disclosure.

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Fig. 1 The structural schematic diagram of the self-repairing module battery provided in the embodiments of the present application is shown in the following figure:

[0025] Fig. 2A structural schematic diagram of a self-repairing assembly of a self-repairing module battery provided by an embodiment of the present application.

[0026] Reference signs

[0027] 100, battery shell; 101, shell main body; 102, battery top cover; 200, self-repairing assembly; 201, self-repairing shell; 202, first one-way valve; 203, second one-way valve; 204, replenishing liquid; 300, battery assembly; 301, bare battery cell; 302, electrolyte; 303, negative electrode structure; 304, positive electrode structure; 305, explosion-proof valve. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0029] In the present application, the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like are based on the orientations or positional relationships shown in the drawings. These terms are mainly used for better description of the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0030] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. Those skilled in the art can understand the specific meanings of these terms in the present application according to the specific circumstances.

[0031] In addition, the terms "mount", "set", "provided with", "connect", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or point connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection between two devices, elements or components. Those skilled in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0032] In addition, the terms "first", "second", and the like are used only to distinguish different devices, elements or components (the specific kind and configuration of which can be the same or different), and do not mean or imply a relative importance and quantity of the indicated devices, elements or components. The meaning of "a plurality" is two or more, unless otherwise specified.

[0033] Embodiments

[0034] The inventors found in the process of design that the existing battery cell generally injects the electrolyte into the battery cell once or multiple times in the production and design process, and stores the excess electrolyte by reserving some extra internal space. This method has several disadvantages for the use of the battery cell.

[0035] The first disadvantage is that if the initial injection amount of electrolyte is insufficient to support the long cycle life of the battery cell, the capacity will cause the battery cell to jump and other phenomena during the later life of the battery cell. The second disadvantage is that the amount of electrolyte in the battery cell is in an excess state under the initial state of the battery cell, and it cannot be replenished as it is continuously consumed during the use of the battery cell. In this case, the electrochemical performance of the battery cell will have additional differences from the initial performance due to the difference in the amount of electrolyte, making it more difficult for the state monitoring software management of the battery cell to accurately manage the use of the aged battery cell, affecting the efficient and safe use of the aged battery cell. The third disadvantage is that as the battery cell ages, it is found that by adding different types of electrolyte additives during the later aging period, the battery cell aging process can be alleviated, the performance degradation of the battery cell can be slowed down, and the performance of the battery cell can be maintained close to the initial state. However, the current initial production stage completely injects the electrolyte into the battery cell, which is in direct contact with the active material of the battery cell. This method cannot automatically add related electrolyte to improve the performance of the battery cell as the battery cell ages. The fourth disadvantage is that when there is excess electrolyte in the battery cell, if the battery cell accidentally experiences thermal runaway, the electrolyte will decompose to generate flammable gas components. Since the electrolyte is in direct contact with the active material of the battery cell in this way, the flammable gas is easily ignited, thereby greatly increasing the heat generation during the thermal runaway process of the battery cell, increasing the difficulty of inhibiting the spread of the battery cell thermal runaway, and increasing the safety risk of the power battery pack.

[0036] In view of this, as Figs. 1-2As shown, in the first aspect, the embodiments of the present application provide a self-repairing module battery, comprising: a battery shell 100, which is configured with a containing cavity; a self-repairing assembly 200 connected to the battery shell 100, the self-repairing assembly 200 is configured in the containing cavity, and the self-repairing assembly 200 is configured to contain a replenishing liquid 204; a battery assembly 300 configured in the containing cavity, and when the battery assembly 300 reacts, so that the air pressure inside the battery shell 100 reaches a preset value, the self-repairing assembly 200 is turned on, and the replenishing liquid 204 inside the self-repairing assembly 200 is replenished to the containing cavity.

[0037] For example, the connection position of the self-repairing assembly 200 is not specifically limited, for example, the self-repairing assembly 200 can be located on the same side as the positive and negative electrodes of the self-repairing module battery, or can be located on different sides of the self-repairing module battery, etc., and the number of the self-repairing assembly 200 can be one or more, etc., which can be set according to actual conditions to meet the battery life requirements of different cycles.

[0038] It can be understood that the self-repairing module battery can be applied to power battery cells, energy storage cells and other devices that require electrochemical energy storage cells, among which the life requirement of the energy storage cell is longer, and the corresponding number of self-repairing assemblies 200 can be arranged inside the battery shell 100 according to the life requirement.

[0039] In the present application, the self-repairing module battery can include lithium ion secondary batteries, lithium ion primary batteries, lithium-sulfur batteries, sodium lithium ion batteries, sodium ion batteries or magnesium ion batteries, etc., which are not limited by the embodiments of the present application.

[0040] In the above implementation process, the self-repairing assembly 200 and the battery assembly 300 are both configured in the containing cavity of the battery shell 100. When the self-repairing module battery is used in cycles, the battery assembly 300 continuously produces gas due to the electrochemical reaction inside the battery assembly 300, and the air pressure inside the battery shell 100 continuously increases. When the air pressure inside the battery shell 100 increases to the preset value of the self-repairing assembly 200, the internal air pressure of the self-repairing assembly 200 will push to open the self-repairing assembly 200, so that the replenishing liquid 204 in the self-repairing assembly 200 flows to the containing cavity and contacts part of the structure of the battery assembly 300. With the replenishment of the replenishing liquid 204 to the battery assembly 300, the reaction inside the battery assembly 300 is improved, and the air pressure decreases. When the cycle continues and the electrochemical reaction reaches the preset value of the air pressure, the self-repairing assembly 200 is opened again. In this way, the battery assembly 300 is continuously repaired, which can avoid the obvious difference in battery performance caused by the difference in the amount of replenishing liquid 204 between the initial replenishing liquid 204 and the later cycle due to the excessive amount of initial replenishing liquid 204, and can also avoid the risk of battery performance diving in the later cycle due to the insufficient amount of electrolyte 302, thereby improving the performance stability of the battery during use.

[0041] like Fig. 2 As shown, the self-healing component 200 includes a self-healing housing 201, a first one-way valve 202, and a second one-way valve 203. Both the first one-way valve 202 and the second one-way valve 203 are connected to the self-healing housing 201. The height of the first one-way valve 202 is higher than the height of the replenishing fluid 204 inside the self-healing housing 201, and the height of the second one-way valve 203 is lower than the height of the replenishing fluid 204 inside the self-healing housing 201.

[0042] It is worth noting that due to the different electrochemical systems of batteries, the maximum temperature of thermal runaway also varies. For lithium iron phosphate systems, the thermal runaway temperature is relatively low, and the self-repairing shell 201 in the self-repairing component 200 can be made of aluminum or steel. However, for ternary systems, the thermal runaway temperature is relatively high, and the self-repairing shell 201 in the self-repairing component 200 is preferably made of steel to prevent the self-repairing shell 201 from burning through during the thermal runaway process, thus reducing the degree of thermal runaway.

[0043] In the above process, the first one-way valve 202 and the second one-way valve 203 are respectively connected to the self-healing housing 201. The self-healing housing 201 contains the replenishing fluid 204. Electrochemical reactions continuously occur inside the battery assembly 300, resulting in gas production. The internal gas pressure of the battery housing 100 continuously increases. When the internal gas pressure of the battery housing 100 increases to the preset value of the self-healing assembly 200, the internal gas pressure will push the first one-way valve 202 and the second one-way valve 203 to open, so that the replenishing fluid 204 flows through the second one-way valve 203 to the receiving cavity and contacts part of the structure of the battery assembly 300. The internal reaction of the battery assembly 300 is improved, and the gas pressure drops. This can avoid the significant difference in battery performance caused by the difference in the amount of replenishing fluid 204 in the early stage and the later stage of the cycle due to the initial amount of replenishing fluid 204. It can also avoid the risk of battery performance drop in the later stage of the cycle due to insufficient electrolyte 302, thus improving the performance stability of the battery during use.

[0044] In some embodiments, the conduction direction of the first one-way valve 202 is the same as the conduction direction of the second one-way valve 203. For example, the conduction direction of the first one-way valve 202 is from the receiving cavity to the interior of the self-healing housing 201, and the conduction direction of the second one-way valve 203 is from the interior of the self-healing housing 201 to the receiving cavity.

[0045] In the above implementation process, when the air pressure inside the battery shell 100 reaches the preset value, the first one-way valve 202 and the second one-way valve 203 are opened at the same time, and the supplement liquid 204 can flow to the accommodation cavity through the second one-way valve 203, the reaction inside the battery assembly 300 is improved, the air pressure decreases, and the supplement liquid 204 can be automatically and dynamically injected, the battery aging process is alleviated, the battery performance attenuation is slowed down, the battery performance is kept close to the initial state, and the heat runaway aggravation phenomenon caused by the large amount of electrolyte 302 used to maintain the long cycle of the battery is avoided.

[0046] In some embodiments, the pressure value of the first one-way valve 202 is consistent with the pressure value of the second one-way valve 203, and the pressure value includes 0.12Mpa-0.35Mpa. The supplement liquid 204 can be automatically and dynamically injected, the battery aging process is alleviated, the battery performance attenuation is slowed down, the battery performance is kept close to the initial state, and the heat runaway aggravation phenomenon caused by the large amount of electrolyte 302 used to maintain the long cycle of the battery is avoided.

[0047] In some embodiments, the battery shell 100 includes a shell main part 101 and a battery top cover 102, the shell main part 101 is connected to the battery top cover 102, and the self-repairing assembly 200 is connected to the battery top cover 102.

[0048] The self-repairing module battery cell described in the present application can improve the safety performance of the battery, avoid the heat runaway aggravation phenomenon caused by the large amount of electrolyte 302 used to maintain the long cycle of the battery. When the battery is in thermal runaway, the active material of the bare battery cell 301 reacts with the conventional electrolyte 302 at the bottom to produce a thermal runaway reaction, and the conventional electrolyte 302 inside the battery will vaporize and other reactions to aggravate the degree of thermal runaway reaction. The additional supplement liquid 204 for ensuring the battery cycle is stored in the self-repairing assembly 200, and the self-repairing assembly 200 is located in the space between the battery top cover 102 and the bare battery cell 301, and is not in direct contact with the bare battery cell 301, thereby avoiding the aggravating effect of the supplement liquid 204 on the thermal runaway.

[0049] In some embodiments, the battery assembly 300 includes a bare battery cell 301 and an electrolyte 302, the bare battery cell 301 and the electrolyte 302 are arranged in the accommodation cavity, and the bare battery cell 301 and the self-repairing assembly 200 form a gap.

[0050] For example, the composition of the supplement liquid 204 can be consistent with the electrolyte 302, or additives can be added to repair the battery performance according to the performance requirements of the battery cycle process, so that the performance is more stable during use.

[0051] Since the self-repairing assembly 200 of the present application is between the top cover of the battery cell and the top of the bare battery cell 301, it avoids contact with the active material in the bare battery cell 301 in the initial stage, and the first one-way valve 202 and the second one-way valve 203 can automatically discharge the supplement liquid 204 according to the gas production of the battery cell during use, so that the amount of electrolyte 302 in the self-repairing module battery of the present application can remain in a relatively stable state during use, thereby improving the stability of the battery cell performance.

[0052] The bare battery cell 301 is composed of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector. The positive electrode current collector without the positive electrode active material layer protrudes from the positive electrode current collector with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer serves as a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector without the negative electrode active material layer protrudes from the negative electrode current collector with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that no fuse occurs when passing a large current, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc. In some embodiments, the battery assembly 300 further includes a negative electrode structure 303, the negative electrode structure 303 connects the negative electrode tabs of the bare battery cell 301, and the negative electrode structure 303 is arranged on the battery top cover 102.

[0053] In some embodiments, the battery assembly 300 further includes a negative electrode structure 303, the negative electrode structure 303 connects the negative electrode tabs of the bare battery cell 301, and the negative electrode structure 303 is arranged on the battery top cover 102, for forming a negative electrode of the self-repairing module battery.

[0054] In some embodiments, the battery assembly 300 further includes a positive electrode structure 304, the positive electrode structure 304 connects the positive electrode tabs of the bare battery cell 301, and the positive electrode structure 304 is arranged on the battery top cover 102, for forming a positive electrode of the self-repairing module battery.

[0055] In some embodiments, the battery assembly 300 further comprises an explosion-proof valve 305 connected to the battery top cover 102, the explosion-proof valve 305 has a pressure range of generally between 0.45Mpa-1.3Mpa. It plays a safety protection role, when the internal pressure of the battery is abnormally large, it plays a role in releasing pressure to reduce the power of battery thermal runaway.

[0056] In a second aspect, the application further provides a battery pack comprising the self-repairing module battery as described above.

[0057] In the battery pack, the self-repairing module battery can be multiple, and the multiple self-repairing module batteries can be connected in series, in parallel, or in a mixed connection. The mixed connection means that there are both series and parallel connections among the multiple self-repairing module batteries. The multiple self-repairing module batteries can be directly connected in series, in parallel, or in a mixed connection, and the whole of the multiple self-repairing batteries is accommodated in the box. Of course, the battery pack can also be in the form of multiple self-repairing modules connected in series, in parallel, or in a mixed connection to form a battery module, and multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box. The battery pack can also include other structures, for example, the battery pack can also include a current combiner component for realizing electrical connection between the multiple self-repairing module batteries.

[0058] Since the battery pack provided in the second aspect comprises the self-repairing module battery, the battery pack has all the technical effects of the self-repairing module battery, which will not be repeated here.

[0059] In a third aspect, the application further provides a power consuming device comprising the battery pack as described above.

[0060] For example, the battery pack is used to provide power for the power consuming device, which can be a vehicle, a portable device, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended range car, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric plane toy, etc. The embodiments of the application do not make special restrictions on the above power consuming devices.

[0061] The following embodiments are described taking a vehicle as an example for convenience of description.

[0062] The vehicle is internally provided with a battery pack, which can be arranged at the bottom, the head, or the tail of the vehicle. The battery pack can be used for power supply of the vehicle, for example, the battery pack can be used as an operating power source of the vehicle, which is used for the circuit system of the vehicle, for example, for the power demand of the vehicle during starting, navigation, and running.

[0063] The vehicle can further include a controller and a motor, the controller being configured to control the battery pack to supply power to the motor, for example, for power requirements of the vehicle during startup, navigation, and operation.

[0064] In some embodiments of the present application, the battery pack can not only serve as an operating power source for the vehicle, but also serve as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0065] The power consuming device provided by the third aspect includes the battery pack, and thus has all the technical effects of the battery pack, which will not be described herein.

[0066] In all embodiments of the present application, "large", "small", "more", "less", "upper", and "lower" are relative, and the description of such relative terms will not be described herein.

[0067] It should be understood that the description of "in the present embodiment", "in the present embodiment" or "as an optional embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in the present embodiment", "in the present embodiment" or "as an optional embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0068] In various embodiments of the present application, it should be understood that the size of the serial number of the above processes does not mean the inevitable sequence of execution, and the execution sequence of the processes should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0069] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A self-healing module battery, characterized in that, include: The battery casing has a receiving cavity; A self-healing assembly is connected to the battery housing, the self-healing assembly is disposed in the receiving cavity, and the self-healing assembly is configured to contain replenishment fluid; A battery assembly is disposed in the receiving cavity, and when the battery assembly reacts, causing the air pressure inside the battery housing to reach a preset value, the self-healing component is activated and replenishes the replenishing fluid inside it into the receiving cavity.

2. The self-healing module battery according to claim 1, characterized in that, The self-healing component includes a self-healing housing, a first one-way valve, and a second one-way valve. Both the first one-way valve and the second one-way valve are connected to the self-healing housing. The height of the first one-way valve is higher than the height of the replenishing fluid inside the self-healing housing, and the height of the second one-way valve is lower than the height of the replenishing fluid inside the self-healing housing.

3. The self-healing module battery according to claim 2, characterized in that, The conduction direction of the first check valve is the same as that of the second check valve.

4. The self-healing module battery according to claim 2 or 3, characterized in that, The pressure value of the first check valve is the same as the pressure value of the second check valve, and the pressure value includes 0.12 MPa to 0.35 MPa.

5. The self-healing module battery according to claim 1, characterized in that, The battery housing includes a housing body and a battery top cover, the housing body is connected to the battery top cover, and the self-healing component is connected to the battery top cover.

6. The self-healing module battery according to claim 5, characterized in that, The battery assembly includes bare cells and electrolyte, the bare cells and electrolyte are disposed in the receiving cavity, and the bare cells form a gap with the self-healing component.

7. The self-healing module battery according to claim 6, characterized in that, The battery assembly also includes a negative electrode structure, which is connected to the negative electrode tab of the bare cell and is disposed on the top cover of the battery.

8. The self-healing module battery according to claim 6 or 7, characterized in that, The battery assembly also includes a positive electrode structure, which is connected to the positive electrode tab of the bare cell and is disposed on the top cover of the battery.

9. The self-healing module battery according to claim 6, characterized in that, The battery assembly also includes an explosion-proof valve connected to the battery top cover.

10. A battery pack, characterized in that, Includes the self-healing module battery as described in any one of claims 1-9.

11. An electrical appliance, characterized in that, Includes the battery pack as described in claim 10.

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