Battery, vehicle and battery swap station

Abstract

The utility model discloses a battery, a vehicle and a battery swap station. The battery comprises a box body, a battery monomer and a protection piece, the battery monomers are accommodated in the box body; the protection piece is arranged on the outer side of the box body. The guard is at least partially flexible. The protection part is configured to be provided with a containing cavity, or the protection part is configured to form the containing cavity together with the outer wall of the box body. The protection part is further configured to be capable of being deformed by filling the containing cavity with fluid. When the battery needs to be deiced, fluid can be introduced into the accommodating cavity; under the pressure of the fluid, the protection part deforms and extrudes the ice layer, so that the ice layer is broken and falls off from the battery, the quick deicing of the battery is realized, and the difficulty in maintaining and replacing the battery is reduced.

Description

Technical Field

[0001] The present application relates to the field of batteries, and particularly to a battery, a vehicle, and a battery swapping station. Background Art

[0002] With the development of battery technology, batteries are applied to more and more fields and gradually replace traditional petrochemical energy in the field of automotive power. A battery can store chemical energy and controllably convert the chemical energy into electrical energy.

[0003] During the use of a battery, it needs to adapt to a complex external environment. When the battery works in a low-temperature environment, ice layers may form on the outer side of the battery, and the ice layers may cause difficulties in disassembling the battery, resulting in difficulties in battery replacement or repair. Summary of the Utility Model

[0004] The present application provides a battery, a vehicle, and a battery swapping station, which can achieve rapid de-icing of the battery and reduce the difficulty of battery maintenance and replacement.

[0005] In a first aspect, the present application provides a battery, which includes a box body, battery cells, and a protective member. The battery cells are accommodated in the box body. The protective member is disposed on the outer side of the box body, and at least part of the protective member is flexible. The protective member is configured to have a receiving cavity, or the protective member is configured to jointly form a receiving cavity with the outer wall of the box body. The protective member is further configured to be deformable by filling a fluid into the receiving cavity.

[0006] When it is necessary to de-ice the battery, a fluid can be introduced into the receiving cavity; under the pressure of the fluid, the protective member deforms and squeezes the ice layer, so that the ice layer breaks and falls off from the battery, achieving rapid de-icing of the battery and reducing the difficulty of battery maintenance and replacement. In addition, during the use of the battery, the protective member can also protect the box body, reduce the external impact on the box body, and improve the reliability of the battery.

[0007] In some embodiments, the protective member includes a first protective layer and a second protective layer. The second protective layer is located between the first protective layer and the box body, and the first protective layer is a flexible layer. The first protective layer includes a first main body and a first connecting portion disposed around the first main body. The second protective layer includes a second main body and a second connecting portion disposed around the second main body. The first main body and the second main body are disposed opposite to each other and are used to form a receiving cavity. The first connecting portion and the second connecting portion are attached and connected. Fluid can be filled between the first main body and the second main body, and the first main body can deform away from the second main body under the pressure of the fluid. The first connecting portion and the second connecting portion form a sealing area of the protective member to reduce the risk of fluid leakage.

[0008] In some embodiments, the protective member includes a flexible first protective layer. The first protective layer includes a first main body and a first connecting portion disposed around the first main body. The first connecting portion is attached to and connected to the box body, and the first main body and the box body are configured to form a receiving cavity. A fluid can be filled between the first main body and the box body, and the first main body can be deformed under the pressure of the fluid. The first connecting portion is connected to the box body and seals the fluid to reduce the risk of fluid leakage. Using the box body to confine the fluid can simplify the structure of the protective member, reduce the volume of the protective member, and increase the energy density.

[0009] In some embodiments, the protective member is provided with an interface communicating with the receiving cavity. The interface can be used to introduce fluid into the receiving cavity. By providing the interface, it is convenient to connect the protective member to an external fluid delivery mechanism.

[0010] In some embodiments, the protective member is detachably connected to the box body. The protective member can be installed on or removed from the box body according to the external environment. Exemplarily, in summer with a higher temperature, the protective member can be removed to reduce the weight of the battery and delay the wear and aging of the protective member; in winter with a lower temperature, the protective member can be installed on the box body to quickly de-ice when it freezes.

[0011] In some embodiments, the battery further includes a pressing plate disposed on a side of the protective member away from the box body. The elastic modulus of the pressing plate is greater than that of the protective member. In the thickness direction of the protective member, a part of the protective member is clamped between the pressing plate and the box body. The pressing plate and the box body can clamp the protective member to fix the protective member and reduce the risk of the protective member falling off. When the protective member is deformed under the action of the fluid, the elastic modulus of the pressing plate is relatively high and the pressing plate is not easily deformed, thereby improving the stability of the protective member and reducing the risk of the protective member falling off.

[0012] In some embodiments, the battery includes a first connecting member and a second connecting member. The first connecting member is fixed to the box body, and at least a part of the second connecting member is located on a side of the pressing plate away from the protective member. The second connecting member is fixedly connected to the first connecting member. The second connecting member can apply pressure to the pressing plate, thereby fixing the pressing plate and the protective member on the box body. The pressing plate can separate at least a part of the second connecting member from the protective member, reducing the risk of the second connecting member directly squeezing the protective member and improving the reliability of the protective member.

[0013] In some embodiments, the protective member includes a mounting hole. The battery includes a first connecting member and a second connecting member. The first connecting member is fixed to the box body, and at least a part of the second connecting member is located on a side of the protective member away from the box body. One of the first connecting member and the second connecting member passes through the mounting hole and is fixed to the other of the first connecting member and the second connecting member. By providing the mounting hole on the protective member, it is convenient to fix the protective member to the box body. The cooperation of the first connecting member and the second connecting member can achieve a stable connection.

[0014] In some embodiments, the protective member includes a plurality of mounting holes which are arranged at intervals along the circumferential direction of the protective member. The plurality of mounting holes can improve the connection stability between the protective member and the box body and reduce the risk of the protective member falling off.

[0015] In some embodiments, the protective member is made of silicone, cowhide, rubber or latex, and these materials have good flexibility and are easily deformed under the action of fluid.

[0016] In some embodiments, the battery includes a locking mechanism which is arranged on the box body and is used to detachably lock the box body to the vehicle body. In the thickness direction of the protective member, the protective member does not overlap with the locking mechanism. Avoiding the arrangement of the locking mechanism and the protective member can reduce the risk of the protective member squeezing the locking mechanism during the deformation of the protective member and reduce the possibility of accidental unlocking of the locking mechanism.

[0017] In a second aspect, the present application provides a vehicle which includes a vehicle body and the battery provided in any one of the embodiments of the first aspect, and the battery is detachably connected to the vehicle body. The battery is detachably connected to the vehicle body, and the vehicle can realize battery swapping so as to quickly supplement electric energy. When an ice layer is formed on the outer side of the battery, fluid can be introduced into the accommodating cavity; under the pressure of the fluid, the protective member deforms and squeezes the ice layer, so that the ice layer breaks and falls off from the battery, thereby reducing the influence of the ice layer on battery swapping and improving the battery swapping efficiency.

[0018] In a third aspect, the present application provides a battery swapping station which is used for the battery of a vehicle. The battery swapping station includes a fluid delivery mechanism which is used to deliver fluid to the accommodating cavity. When the vehicle enters the battery swapping station, if the battery is covered with an ice layer, the fluid delivery mechanism can introduce fluid into the accommodating cavity; under the pressure of the fluid, the protective member deforms towards the side away from the box body and squeezes the ice layer, so that the ice layer breaks and falls off from the battery; after the ice layer falls off, the battery swapping station replaces the battery of the vehicle. By providing the fluid delivery mechanism and the protective member, the battery swapping efficiency can be improved and the risk of battery swapping failure can be reduced.

[0019] In some embodiments, the battery swapping station further includes a heating device which is connected to the fluid delivery mechanism and is used to heat the fluid. The high-temperature fluid can not only expand the protective member, but also melt the ice layer to improve the ice-breaking efficiency. Description of the Drawings

[0020] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings.

[0021] Figure 1 Schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0022] Figure 2 Schematic structural diagram of a battery provided in some embodiments of the present application;

[0023] Figure 3As Figure 2 Schematic diagram of the battery when the protective member is deformed;

[0024] Figure 4 Cross-sectional schematic diagram of the battery provided by some embodiments of the present application;

[0025] Figure 5 For Figure 4 Enlarged schematic diagram at the circular frame;

[0026] Figure 6 Partial cross-sectional schematic diagram of the battery provided by other embodiments of the present application;

[0027] Figure 7 Schematic diagram of a battery swapping station provided by some embodiments of the present application.

[0028] Explanation of the reference numerals in the drawings is as follows

[0029] 1. Vehicle; 2. Battery; 3. Vehicle body; 4. Battery swapping station; 5. Fluid conveying mechanism; 5a. Connector; 5b. Pipeline; 5c. Power component; 6. Battery swapping compartment; 7. Battery compartment; 8. Heating device;

[0030] 10. Box body; 11. First box body part; 12. Second box body part; 121. Frame body; 122. Bottom plate; 20. Battery cell;

[0031] 30. Protective member; 31. First protective layer; 311. First main body; 312. First connecting part; 32. Second protective layer; 321. Second main body; 322. Second connecting part; 33. Interface; 34. Mounting hole; 35. Accommodating cavity;

[0032] 40. Pressing plate; 41. Through hole; 50. First connecting piece; 60. Second connecting piece; 70. Locking mechanism;

[0033] Z. Thickness direction. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order or primary-secondary relationship.

[0036] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", "joined", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0039] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0040] The "plurality" mentioned in this application refers to two or more (including two).

[0041] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism but also the case of approximate parallelism commonly recognized in engineering; at the same time, "perpendicular" also includes not only the case of absolute perpendicularity but also the case of approximate perpendicularity commonly recognized in engineering.

[0042] The battery mentioned in the embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.

[0043] The battery cell can be a secondary battery cell, which refers to a battery cell that can be activated by charging the active material after discharging the battery cell and can be used continuously.

[0044] The battery cell can be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium-metal battery cell, a sodium-metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-metal hydride battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc.

[0045] Currently, from the perspective of the development of the market situation, batteries have been widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in multiple fields such as electric tools, drones, and energy storage devices. With the continuous expansion of the fields where batteries are used, the market demand for them is also continuously increasing.

[0046] When the battery works in a low-temperature environment, ice layers may form on the outer side of the battery. The ice layers may cause difficulty in disassembling the battery, resulting in difficulties in battery replacement or repair. For example, when the vehicle is driving in rainy or snowy weather, the snow water on the road surface will splash onto the battery, causing the lower side of the battery to freeze. However, when the vehicle needs to replace the battery, the battery may not be removable due to being covered by ice layers, resulting in a failed battery replacement.

[0047] In view of this, the embodiments of the present application provide a technical solution in which a deformable protective member is provided on the outer side of the battery box. The protective member can deform and squeeze the ice layer when a fluid is introduced, thereby breaking the ice layer and achieving rapid de-icing of the battery, reducing the difficulty of battery repair and replacement.

[0048] The battery described in the embodiments of the present application is applicable to vehicles that use batteries. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc.

[0049] Figure 1 It is a schematic structural diagram of a vehicle provided for some embodiments of the present application.

[0050] As Figure 1 shown, a battery 2 is provided inside the vehicle 1, and the battery 2 can be used to supply power to the vehicle 1. The battery 2 can be provided at the head, middle, or tail of the vehicle 1.

[0051] In some embodiments, the battery 2 can be used as the operating power source of the vehicle 1.

[0052] In some embodiments of the present application, the battery 2 can not only serve as the operating power source of the vehicle 1, but also as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0053] In some embodiments, the battery 2 is disposed on the lower side of the vehicle body 3 of the vehicle 1.

[0054] The vehicle 1 may further include a controller and a motor. The controller is used to control the battery 2 to supply power to the motor, for example, for the working power requirements during the start, navigation, and driving of the vehicle 1.

[0055] Figure 2 Schematic structural diagram of the battery provided in some embodiments of the present application; Figure 3 is Figure 2 Schematic diagram of the battery shown when the protective member is deformed; Figure 4 Cross-sectional schematic diagram of the battery provided in some embodiments of the present application; Figure 5 is Figure 4 Enlarged schematic diagram at the round frame.

[0056] Referring to Figures 2 to 5 , embodiments of the present application provide a battery 2, which includes a box body 10 and battery cells 20. The battery cells 20 are accommodated in the box body 10.

[0057] In the battery 2, the number of battery cells 20 can be one or multiple. Exemplarily, the number of battery cells 20 is multiple. The multiple battery cells 20 can be connected in series, parallel, or in a hybrid connection. A hybrid connection means that there are both series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 can be directly connected in series, parallel, or in a hybrid connection together, and then the whole formed by the multiple battery cells 20 is accommodated in the box body 10; of course, it can also be that multiple battery cells 20 are first connected in series, parallel, or in a hybrid connection to form battery modules, and then the multiple battery modules are connected in series, parallel, or in a hybrid connection to form a whole and are accommodated in the box body 10.

[0058] As an example, the battery cell 20 can be a prismatic battery cell, a soft-pack battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a multi-prismatic battery cell, and the multi-prismatic battery cell is, for example, a hexagonal-prismatic battery cell, etc.

[0059] The box body 10 can be of various shapes, for example, a cylinder, a cuboid, etc.

[0060] The material of the box body 10 can be steel, aluminum, aluminum alloy, or other materials.

[0061] In some embodiments, the box body 10 is used to accommodate the battery cells 20, and the box body 10 can be of various structures.

[0062] In some embodiments, the box body 10 may include a first box body portion 11 and a second box body portion 12. The first box body portion 11 and the second box body portion 12 are covered with each other, and the first box body portion 11 and the second box body portion 12 jointly define an accommodation space for accommodating the battery cell 20. The second box body portion 12 may be a hollow structure with one end open, and the first box body portion 11 is a plate-like structure. The first box body portion 11 covers the open side of the second box body portion 12 to form the box body 10 with an accommodation space; both the first box body portion 11 and the second box body portion 12 may also be hollow structures with one side open, and the open side of the first box body portion 11 covers the open side of the second box body portion 12 to form the box body 10 with an accommodation space. Of course, the first box body portion 11 and the second box body portion 12 may be in various shapes, such as a cylinder, a cuboid, etc.

[0063] To improve the sealing performance after the connection between the first box body portion 11 and the second box body portion 12, a sealing member, such as sealant, sealing ring, etc., may also be provided between the first box body portion 11 and the second box body portion 12.

[0064] In some embodiments, the battery 2 includes a box body 10, a battery cell 20, and a protective member 30. The battery cell 20 is accommodated in the box body 10. The protective member 30 is disposed outside the box body 10, and at least part of the protective member 30 has flexibility.

[0065] Exemplarily, the protective member 30 is configured to have an accommodation cavity 35, or the protective member 30 is configured to jointly form the accommodation cavity 35 with the outer wall of the box body 10. The protective member 30 is further configured to be deformable by filling a fluid into the accommodation cavity 35.

[0066] Exemplarily, the protective member 30 is configured to deform away from the box body 10 by filling a fluid inside it, or the protective member 30 is configured to deform away from the box body 10 by filling a fluid between the protective member 30 and the box body 10.

[0067] The protective member 30 is disposed on one side or multiple sides of the box body 10. In some examples, the protective member 30 is disposed on the lower side of the box body 10; in other examples, the protective member 30 is disposed on the lower side and the outer peripheral side of the box body 10. In still other examples, the protective member 30 is disposed on the upper side, lower side, and outer peripheral side of the box body 10.

[0068] Exemplarily, the accommodation cavity 35 may be formed before filling the fluid, or may be formed after filling the fluid.

[0069] At least part of the protective member 30 is flexible. The protective member 30 can be elastically deformed under the pressure of the fluid, and after the fluid is discharged, the protective member 30 can return to its original state.

[0070] Exemplarily, the fluid may be a gas or a liquid.

[0071] The protective member 30 can be detachably connected to the box body 10. For example, the protective member 30 can be fixedly connected to the box body 10 by fasteners, snap connection or other means. Alternatively, the protective member 30 can also be non - detachably connected to the box body 10. For example, the protective member 30 is fixed to the box body 10 by bonding, welding or other means.

[0072] In some examples, the interior of the protective member 30 can be filled with fluid. For example, the protective member 30 can include an airbag or a liquid bag.

[0073] Optionally, before filling the fluid, there can be a receiving cavity 35 inside the protective member 30; after filling the fluid, the receiving cavity 35 of the protective member 30 increases, and the protective member 30 expands and deforms. Alternatively, before filling the fluid, there may be no receiving cavity inside the protective member 30; after filling the fluid, the protective member 30 expands and deforms under the action of the fluid and forms a receiving cavity 35 for accommodating the fluid.

[0074] In some other examples, fluid can be filled between the protective member 30 and the box body 10. The box body 10 can separate the battery cell 20 from the fluid, reducing the risk of short - circuit of the battery cell 20 due to the fluid.

[0075] Optionally, before filling the fluid, the protective member 30 and the box body 10 enclose to form a receiving cavity 35; after filling the fluid, the receiving cavity 35 increases, and the protective member 30 expands and deforms. Alternatively, before filling the fluid, the protective member 30 can be directly attached to the box body 10 with no gap between the box body 10 and the protective member 30; after filling the fluid, the protective member 30 expands and deforms under the action of the fluid and encloses with the box body 10 to form a receiving cavity 35 for accommodating the fluid.

[0076] When it is necessary to de - ice the battery 2, fluid can be introduced into the receiving cavity 35; under the pressure of the fluid, the protective member 30 deforms and squeezes the ice layer, so that the ice layer breaks and falls off from the battery 2, realizing rapid de - icing of the battery 2 and reducing the difficulty of battery 2 maintenance and replacement. In addition, during the use of the battery 2, the protective member 30 can also protect the box body 10, reduce the external impact on the box body 10, and improve the reliability of the battery 2.

[0077] Compared with the method of spraying high - temperature fluid (such as hot air, hot water, etc.) from the outside towards the ice layer, the method of introducing fluid into the inner side of the protective member 30 is highly efficient and energy - saving.

[0078] In some embodiments, the protective member 30 is at least provided on the lower side of the box body 10. During the use of the battery 2, the lower side of the battery 2 is more likely to freeze. By setting the protective member 30 on the lower side of the box body 10, rapid de - icing can be achieved.

[0079] In some embodiments, the protective member 30 is made of a flexible material. The protective member 30 can elastically deform and break the ice layer when fluid is introduced, and after the fluid is discharged, the protective member 30 can return to its original shape, reducing the volume of the battery 2.

[0080] When the protective member 30 is impacted by external impurities, the protective member 30 can release stress through deformation, thereby reducing the force transmitted to the battery cell 20 and improving reliability.

[0081] In some embodiments, the protective member 30 can be integrally formed. For example, the protective member 30 can be integrally formed by a blow molding process or an injection molding process. In an alternative embodiment, the protective member 30 is formed by splicing a plurality of independently formed components.

[0082] In some embodiments, the material of the protective member 30 is silicone, cowhide, rubber or latex. These materials have good flexibility, are easily deformed under the action of fluid, and the fluid is not easily passed through.

[0083] In some embodiments, the roughness of the outer surface of the protective member 30 away from the box body 10 is less than the roughness of the outer surface of the box body 10. The outer surface of the protective member 30 is smoother and easier to separate from the ice layer.

[0084] In some embodiments, when the protective member 30 is not filled with fluid, it is generally flat to reduce the volume of the protective member 30 and improve space utilization. Optionally, the protective member 30 is located on the lower side of the box body 10, and the flat protective member 30 occupies less space in the vertical direction.

[0085] In some embodiments, the protective member 30 is configured to expand and deform by filling fluid therein. Optionally, the protective member 30 is an airbag.

[0086] In some examples, the protective member 30 has a receiving cavity 35 before being filled with fluid.

[0087] In some embodiments, the protective member 30 includes a first protective layer 31 and a second protective layer 32. The second protective layer 32 is located between the first protective layer 31 and the box body 10, and the first protective layer 31 is a flexible layer. The first protective layer 31 includes a first main body 311 and a first connecting portion 312 disposed around the first main body 311. The second protective layer 32 includes a second main body 321 and a second connecting portion 322 disposed around the second main body 321. The first main body 311 and the second main body 321 are disposed opposite to each other and are used to form the receiving cavity 35, and the first connecting portion 312 and the second connecting portion 322 are attached and connected.

[0088] The first main body 311 and the second main body 321 can be attached or spaced apart.

[0089] The first connecting portion 312 and the second connecting portion 322 can be hermetically connected by welding, bonding or other means.

[0090] The second protective layer 32 can be a flexible layer or a rigid layer.

[0091] Exemplarily, the surface of the first main body 311 away from the box body 10 can be flush with the surface of the first connecting portion 312 away from the box body 10, or can protrude from the outer surface of the first connecting portion 312 away from the box body 10.

[0092] A fluid can be filled between the first main body 311 and the second main body 321, and the first main body 311 can deform toward the side away from the second main body 321 under the pressure of the fluid. The first connecting portion 312 and the second connecting portion 322 form a sealing area of the protective member 30 to reduce the risk of fluid leakage.

[0093] In some embodiments, the first protective layer 31 and the second protective layer 32 are formed independently.

[0094] In some embodiments, the first connecting portion 312 and the second connecting portion 322 are hot-pressed and welded.

[0095] In some embodiments, the second protective layer 32 is a flexible layer. Both the first protective layer 31 and the second protective layer 32 are flexible, and both can face downward, which can play an anti-fooling role and reduce the risk of misassembly.

[0096] In some embodiments, the second main body 321 can be attached to the box body 10. When the fluid is filled between the first main body 311 and the second main body 321, the second main body 321 deforms less under the restriction of the box body 10, which can increase the degree of deformation of the first main body 311 and improve the de-icing efficiency.

[0097] In some embodiments, the first main body 311 and the second main body 321 are arranged at intervals. A receiving cavity 35 is formed between the first main body 311 and the second main body 321. When external impurities impact the first main body 311, the receiving cavity 35 can play a buffering role, reduce the impact force transmitted to the second main body 321 and the battery cell 20, and improve the reliability.

[0098] In other embodiments, the first main body 311 and the second main body 321 are attached to each other to reduce the volume of the protective member 30 and improve the space utilization rate.

[0099] Optionally, both the first protective layer 31 and the second protective layer 32 are flat plate structures.

[0100] In some embodiments, the protective member 30 is provided with an interface 33 communicating with the receiving cavity 35. The interface 33 is used to introduce fluid into the receiving cavity 35. By providing the interface 33, it is convenient to realize the connection between the protective member 30 and an external fluid delivery mechanism.

[0101] In some embodiments, the interface 33 is disposed on the first body 311.

[0102] In some embodiments, the protective member 30 is detachably connected to the box body 10. The protective member 30 can be mounted on the box body 10 or removed from the box body 10 according to the external environment. Exemplarily, in summer with relatively high temperature, the protective member 30 can be removed to reduce the weight of the battery 2 and delay the wear and aging of the protective member 30; in winter with relatively low temperature, the protective member 30 can be mounted on the box body 10 to quickly de-ice when it freezes.

[0103] In some embodiments, the battery 2 further includes a pressing plate 40. The pressing plate 40 is disposed on a side of the protective member 30 away from the box body 10, and the elastic modulus of the pressing plate 40 is greater than that of the protective member 30. In the thickness direction Z of the protective member 30, a part of the protective member 30 is clamped between the pressing plate 40 and the box body 10.

[0104] The pressing plate 40 and the box body 10 can clamp the protective member 30 to fix the protective member 30 and reduce the risk of the protective member 30 falling. When the protective member 30 is deformed by the action of a fluid, due to the relatively high elastic modulus of the pressing plate 40, the pressing plate 40 is not easily deformed, thereby improving the stability of the protective member 30 and reducing the risk of the protective member 30 falling.

[0105] In some embodiments, in the vertical direction, at least part of the first connecting portion 312 and at least part of the second connecting portion 322 are clamped between the box body 10 and the pressing plate 40. Optionally, the vertical direction is parallel to the thickness direction Z.

[0106] Optionally, the second protective layer 32 and the first protective layer 31 are stacked in the vertical direction.

[0107] In some embodiments, the battery 2 includes a first connecting member 50 and a second connecting member 60. The first connecting member 50 is fixed to the box body 10, at least part of the second connecting member 60 is located on a side of the pressing plate 40 away from the protective member 30, and the second connecting member 60 is fixedly connected to the first connecting member 50.

[0108] Exemplarily, the first connecting member 50 can be integrally formed with a certain component of the box body 10. For example, a threaded hole can be formed in a beam of the box body 10, and the corresponding part of the threaded hole can be used as the first connecting member 50. Alternatively, the first connecting member 50 can be independently formed, and the first connecting member 50 can be fixed to the box body 10 by welding, riveting, clamping or other means.

[0109] The second connecting member 60 can apply pressure to the pressing plate 40, thereby fixing the pressing plate 40 and the protective member 30 to the box body 10. The pressing plate 40 can separate at least part of the second connecting member 60 from the protective member 30, reducing the risk of the second connecting member 60 directly squeezing the protective member 30 and improving the reliability of the protective member 30.

[0110] In some embodiments, the protective member 30 includes mounting holes 34. The battery 2 includes a first connecting member 50 and a second connecting member 60. The first connecting member 50 is fixed to the box body 10, and at least part of the second connecting member 60 is located on the side of the protective member 30 away from the box body 10. One of the first connecting member 50 and the second connecting member 60 passes through the mounting hole 34 and is fixed to the other of the first connecting member 50 and the second connecting member 60.

[0111] There may be one or more mounting holes 34. The first connecting member 50 may be one or more. The second connecting member 60 may be one or more. Optionally, the mounting holes 34, the first connecting member 50, and the second connecting member 60 are provided in one-to-one correspondence.

[0112] In some examples, the first connecting member 50 passes through the mounting hole 34 and is fixed to the second connecting member 60; in other examples, the second connecting member 60 passes through the mounting hole 34 and is fixed to the first connecting member 50.

[0113] By providing the mounting holes 34 on the protective member 30, it is convenient to fix the protective member 30 to the box body 10. The cooperation of the first connecting member 50 and the second connecting member 60 can achieve a stable connection.

[0114] In some embodiments, the first connecting member 50 is threadedly connected to the second connecting member 60. Optionally, the first connecting member 50 includes a bolt and the second connecting member 60 includes a nut. Alternatively, the first connecting member 50 includes a nut and the second connecting member 60 includes a bolt.

[0115] In some embodiments, the protective member 30 includes a plurality of mounting holes 34, and the plurality of mounting holes 34 are spaced along the circumferential direction of the protective member 30. The plurality of mounting holes 34 can improve the connection stability between the protective member 30 and the box body 10 and reduce the risk of the protective member 30 falling off.

[0116] In some embodiments, the mounting holes 34 are provided in the sealing area of the protective member 30, that is to say, the mounting holes 34 penetrate through the first connecting portion 312 and the second connecting portion 322.

[0117] In some embodiments, the pressing plate 40 is provided with through holes 41, and the through holes 41 are arranged opposite to the mounting holes 34. The first connecting member 50 passes through the mounting holes 34 and the through holes 41 and is detachably connected to the second connecting member 60; alternatively, the second connecting member 60 passes through the through holes 41 and the mounting holes 34 and is detachably connected to the first connecting member 50.

[0118] The number of the through holes 41 is the same as that of the mounting holes 34, and the through holes 41 and the mounting holes 34 are arranged in one-to-one correspondence.

[0119] In some embodiments, there are a plurality of pressing plates 40, and the plurality of pressing plates 40 are arranged at intervals along the circumferential direction of the protective member 30. The pressing plates 40 and the second connecting members 60 are arranged in one-to-one correspondence.

[0120] In some embodiments, the pressing plate 40 is annular, and the pressing plate 40 surrounds the first main body 311. Optionally, the first connecting portion 312 and the second connecting portion 322 can only be attached to each other without being connected by welding or bonding. The pressing plate 40 can press the first connecting portion 312 and the second connecting portion 322 together, so as to achieve sealing.

[0121] In some embodiments, the battery 2 includes a locking mechanism 70, and the locking mechanism 70 is arranged on the box body 10 and is used for detachably locking the box body 10 to the vehicle body.

[0122] By adjusting the locking mechanism 70, the locking state of the locking mechanism 70 with the vehicle body and the unlocking state of the locking mechanism 70 with the vehicle body can be switched.

[0123] In some examples, the locking mechanism 70 can be threadedly connected to the vehicle body. By rotating the locking mechanism 70, the locking mechanism 70 can be locked to the vehicle body, or the locking between the locking mechanism 70 and the vehicle body can be released. In other examples, the locking mechanism 70 can be snap-connected to the vehicle body. By rotating or linearly pushing the locking mechanism 70, the locking mechanism 70 can be locked to the vehicle body, or the locking between the locking mechanism 70 and the vehicle body can be released.

[0124] In some embodiments, in the thickness direction Z of the protective member 30, the protective member 30 and the locking mechanism 70 do not overlap.

[0125] Optionally, the thickness direction Z of the protective member 30 is parallel to the vertical direction.

[0126] Avoiding the arrangement of the locking mechanism 70 and the protective member 30 can reduce the risk of the protective member 30 squeezing the locking mechanism 70 during the deformation of the protective member 30 and reduce the possibility of accidental unlocking of the locking mechanism 70; in addition, avoiding the arrangement of the locking mechanism 70 and the protective member 30 can also reduce the risk of the protective member 30 blocking the locking mechanism 70 and facilitate the operation on the locking mechanism 70.

[0127] In some embodiments, there are a plurality of locking mechanisms 70. Optionally, the plurality of locking mechanisms 70 are distributed on both sides of the protective member 30.

[0128] In some embodiments, the second box body part 12 includes a frame body 121 and a bottom plate 122. The bottom plate 122 is located below the frame body 121 and fixed to the frame body 121. The first box body part 11 is located above the frame body 121 and fixed to the frame body 121.

[0129] The frame body 121, the bottom plate 122 and the first box body part 11 enclose to form an accommodation space for accommodating the battery cells 20.

[0130] In some embodiments, the bottom plate 122 can be a single-layer structure or a multi-layer structure.

[0131] In some examples, the bottom plate 122 includes a bearing plate, and the battery cells 20 can be fixed to the bearing plate. For example, the battery cells 20 are bonded to the bearing plate by structural adhesive. Optionally, the protective member 30 is fixed to the bearing plate.

[0132] In some other examples, the bottom plate 122 includes a bearing plate and a bottom guard plate located below the bearing plate. The battery cells 20 can be fixed to the bearing plate, and the protective member 30 can be fixed to the bottom guard plate.

[0133] In still some other examples, the bottom plate 122 includes a bearing plate, a bottom guard plate located below the bearing plate, and other functional components (such as a buffer or a heat exchange plate) located between the bearing plate and the bottom guard plate.

[0134] In some embodiments, the first connecting member 50 is fixed to the frame body 121. Optionally, the first connecting member 50 passes through the bottom plate 122, the protective member 30 and the pressing plate 40 and is connected to the second connecting member 60.

[0135] In some embodiments, the frame body 121 includes a plurality of side beams. Optionally, the plurality of side beams are sequentially connected and enclose to form a rectangular frame body 121.

[0136] In some embodiments, the locking mechanism 70 is disposed on the side beam.

[0137] Figure 6 It is a partial cross-sectional schematic diagram of the battery provided in some other embodiments of the present application.

[0138] Referring to Figure 6 , in some embodiments, the protective member 30 includes a flexible first protective layer 31. The first protective layer 31 includes a first main body 311 and a first connecting portion 312 disposed around the first main body 311. The first connecting portion 312 is attached to and connected to the box body 10, and the first main body 311 and the box body 10 are used to form an accommodation cavity 35.

[0139] The first main body 311 can be in contact with the box body 10 or can be spaced apart. Exemplarily, the surface of the first main body 311 away from the box body 10 can be flush with the surface of the first connecting portion 312 away from the box body 10, or can protrude from the outer surface of the first connecting portion 312 away from the box body 10.

[0140] The first connecting portion 312 and the box body 10 can be hermetically connected by welding, bonding or other means.

[0141] A fluid can be filled between the first main body 311 and the box body 10, and the first main body 311 can be deformed under the pressure of the fluid. The first connecting portion 312 and the box body 10 are connected and sealed to the fluid to reduce the risk of fluid leakage. Using the box body 10 to confine the fluid can simplify the structure of the protective member 30, reduce the volume of the protective member 30, and improve the energy density.

[0142] In some embodiments, the first connecting portion 312 is bonded to the bottom plate 122. Alternatively, the first connecting portion 312 can only be in contact with the bottom plate 122, and the annular pressing plate 40 presses the first connecting portion 312 tightly against the bottom plate 122.

[0143] In some embodiments, the first main body 311 and the bottom plate 122 are spaced apart. A receiving cavity 35 is formed between the first main body 311 and the bottom plate 122. When external impurities impact the first main body 311, the receiving cavity 35 can play a buffering role, reducing the impact force transmitted to the bottom plate 122 and the battery cell 20, and improving the reliability.

[0144] In some other embodiments, the first main body 311 and the bottom plate 122 are in contact with each other to reduce the space occupied by the protective member 30 in the vertical direction and improve the space utilization rate.

[0145] In some embodiments, the pressing plate 40 is disposed on the side of the first connecting portion 312 away from the box body 10.

[0146] In some embodiments, the first connecting portion 312 is provided with a plurality of mounting holes 34.

[0147] Referring to Figure 1 , an embodiment of the present application further provides a vehicle 1, which includes a vehicle body 3 and the battery 2 provided in any of the foregoing embodiments, and the battery 2 is detachably connected to the vehicle body 3.

[0148] The battery 2 is detachably connected to the vehicle body 3, and the vehicle 1 can realize battery swapping, thereby quickly replenishing electric energy. When an ice layer is formed on the outside of the battery 2, a fluid can be introduced into the receiving cavity 35; under the pressure of the fluid, the protective member 30 deforms and presses the ice layer, so that the ice layer breaks and falls off from the battery 2, thereby reducing the influence of the ice layer on battery swapping and improving the battery swapping efficiency.

[0149] In some embodiments, the locking mechanism 70 is used to lock the cross beam or longitudinal beam of the vehicle body 3.

[0150] In some embodiments, the vehicle 1 includes a heavy truck.

[0151] Figure 7 Schematic diagram of a battery swapping station provided by some embodiments of the present application.

[0152] Referring to Figure 7 , the battery swapping station 4 of the embodiments of the present application is used to replace the battery 2 of the vehicle 1. The battery swapping station 4 includes a fluid conveying mechanism 5, and the fluid conveying mechanism 5 is used to convey fluid to the accommodation cavity 35.

[0153] When the vehicle 1 enters the battery swapping station 4, if the battery 2 is covered with ice, the fluid conveying mechanism 5 can introduce fluid into the accommodation cavity 35; under the pressure of the fluid, the protective member 30 deforms and presses the ice layer, so that the ice layer breaks and falls off from the battery 2; after the ice layer falls off, the battery swapping station 4 replaces the battery 2 of the vehicle 1. By providing the fluid conveying mechanism 5 and the protective member 30, the battery swapping efficiency can be improved and the risk of battery swapping failure can be reduced.

[0154] In some embodiments, the battery swapping station 4 includes a battery swapping bin 6, and the battery swapping bin 6 can be used to remove the discharged battery on the vehicle 1 and install a new fully charged battery for the vehicle 1.

[0155] Before the vehicle 1 enters the battery swapping bin 6 for battery swapping, the fluid conveying mechanism 5 can convey fluid to remove the ice layer on the lower side of the battery 2, thereby reducing the risk of battery swapping failure and improving the battery swapping efficiency.

[0156] In some embodiments, the battery swapping station 4 further includes a battery bin 7. The battery bin 7 is used to accommodate the battery 2 and charge the battery 2. The battery 2 removed from the vehicle 1 is transported to the battery bin 7 for charging; the fully charged battery 2 in the battery bin 7 can be installed on the chassis of the vehicle 1 to complete the battery swapping.

[0157] In some embodiments, the battery bin 7 and the battery swapping bin 6 are arranged adjacent to each other.

[0158] In some embodiments, the fluid conveying mechanism 5 includes a joint 5a, a pipeline 5b and a power member 5c. The joint 5a is used to connect to the interface 33 of the protective member, the pipeline 5b connects the joint 5a and the power member 5c, and the power member 5c is used to drive the fluid to flow.

[0159] The power member 5c can press the fluid into the interior of the protective member 30 or pump out the fluid inside the protective member 30. Optionally, the power member 5c includes a pump.

[0160] In some embodiments, the fluid conveyed by the fluid conveying mechanism 5 is gas. Gas is easy to obtain and does not need to be stored. Optionally, the protective member 30 is an airbag.

[0161] When the joint 5a is disconnected from the interface 33, the gas can also be discharged under the action of the elastic restoring force of the protective member 30 without the power member 5c being withdrawn.

[0162] In some embodiments, the battery swapping station 4 further includes a heating device 8, and the heating device 8 is connected to the fluid delivery mechanism 5 and is used to heat the fluid. The high-temperature fluid can not only expand the protective member 30, but also melt the ice layer, improving the ice-breaking efficiency.

[0163] In some embodiments, the high-temperature fluid can also melt the ice layer at the interface 33 to facilitate the cooperation between the joint 5a and the interface 33.

[0164] In some embodiments, the heating device 8 is disposed on the pipeline 5b.

[0165] In some embodiments, the joint 5a has a conical structure. When the ice layer blocks the interface 33, the joint 5a can pierce the ice layer and insert into the interface 33.

[0166] In some embodiments, the fluid delivery mechanism 5 can be disposed inside the battery swapping bin 6 or outside the battery swapping bin 6.

[0167] Referring to Figures 2 to 5 , an embodiment of the present application provides a battery 2, which includes a box body 10, battery cells 20, a protective member 30, a pressing plate 40, a first connecting member 50 and a second connecting member 60. The battery cells 20 are accommodated in the box body 10. The protective member 30 is disposed on the lower side of the box body 10.

[0168] The protective member 30 includes a first protective layer 31 and a second protective layer 32, and the second protective layer 32 is located between the first protective layer 31 and the box body 10. The first protective layer 31 includes a first main body 311 and a first connecting portion 312 disposed around the first main body 311. The second protective layer 32 includes a second main body 321 and a second connecting portion 322 disposed around the second main body 321. The first main body 311 and the second main body 321 are disposed opposite to each other, and the first connecting portion 312 and the second connecting portion 322 are attached and connected.

[0169] A fluid can be filled between the first main body 311 and the second main body 321, and the first main body 311 can bulge and deform under the pressure of the fluid. The pressing plate 40 is disposed on the side of the first connecting portion 312 away from the second connecting portion 322. The elastic modulus of the pressing plate 40 is greater than the elastic modulus of the first protective layer 31, and the elastic modulus of the pressing plate 40 is greater than the elastic modulus of the second protective layer 32.

[0170] The protective member 30 is provided with a mounting hole 34, and the mounting hole 34 penetrates through the first connecting portion 312 and the second connecting portion 322. The pressing plate 40 is provided with a through hole 41 opposite to the mounting hole 34.

[0171] The first connecting member 50 is fixed to the box body 10, and at least a part of the second connecting member 60 is located on the side of the pressing plate 40 away from the protection member 30. The first connecting member 50 passes through the mounting hole 34 and the through hole 41 and is threadedly connected to the second connecting member 60, or the second connecting member 60 passes through the through hole 41 and the mounting hole 34 and is threadedly connected to the first connecting member 50.

[0172] There are a plurality of mounting holes 34, and the plurality of mounting holes 34 are arranged along the circumferential direction of the protection member 30. The mounting holes 34, the first connecting member 50, the second connecting member 60, and the pressing plate 40 are arranged in one-to-one correspondence.

[0173] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that, Comprising: A box body; A battery cell, accommodated within the box body; A protective member, disposed on the outer side of the box body, at least part of the protective member being flexible; Wherein, the protective member is configured to have a receiving cavity, or the protective member is configured to jointly form a receiving cavity with the outer wall of the box body; The protective member is further configured to be deformable by filling a fluid into the receiving cavity.

2. The battery according to claim 1, characterized in that, The protective member includes a first protective layer and a second protective layer, the second protective layer being located between the first protective layer and the box body, the first protective layer being a flexible layer; The first protective layer includes a first main body and a first connecting portion disposed around the first main body, the second protective layer includes a second main body and a second connecting portion disposed around the second main body, the first main body and the second main body being disposed opposite to each other and configured to form the receiving cavity, and the first connecting portion and the second connecting portion being attached and connected.

3. The battery according to claim 1, wherein The protective member includes a flexible first protective layer, the first protective layer includes a first main body and a first connecting portion disposed around the first main body, the first connecting portion being attached and connected to the box body, and the first main body and the box body being configured to form the receiving cavity.

4. The battery according to claim 1, characterized in that, The protective member is provided with an interface communicating with the receiving cavity.

5. The battery according to claim 1, wherein, The protective member is detachably connected to the box body.

6. The battery according to any one of claims 1-5, characterized in that, The battery further includes a pressing plate, the pressing plate being disposed on a side of the protective member away from the box body, and the elastic modulus of the pressing plate being greater than the elastic modulus of the protective member; In the thickness direction of the protective member, a part of the protective member is clamped between the pressing plate and the box body.

7. The battery according to claim 6, wherein, The battery includes a first connecting member and a second connecting member, the first connecting member being fixed to the box body, at least part of the second connecting member being located on a side of the pressing plate away from the protective member, and the second connecting member being fixedly connected to the first connecting member.

8. The battery according to any one of claims 1-5, characterized in that, The protective member includes mounting holes; The battery includes a first connecting member and a second connecting member, the first connecting member being fixed to the box body, at least part of the second connecting member being located on a side of the protective member away from the box body; One of the first connecting member and the second connecting member passes through the mounting hole and is fixed to the other of the first connecting member and the second connecting member.

9. The battery according to claim 8, characterized in that, The protective member includes a plurality of the mounting holes, and the plurality of mounting holes are spaced apart along the circumferential direction of the protective member.

10. The battery according to any one of claims 1-5, characterized in that, The material of the protective member is silicone, cowhide, rubber or latex.

11. The battery according to any one of claims 1-5, characterized in that, The battery includes a locking mechanism, the locking mechanism being disposed on the box body and configured to detachably lock the box body to the vehicle body; In the thickness direction of the protective member, the protective member does not overlap with the locking mechanism.

12. A vehicle, characterized in that, Comprising: A vehicle body; And The battery according to any one of claims 1-11, the battery being detachably connected to the vehicle body.

13. A battery swapping station, characterized in that, For replacing the battery of the vehicle according to claim 12; The battery swapping station includes a fluid delivery mechanism, the fluid delivery mechanism being configured to deliver a fluid to the receiving cavity.

14. The battery swapping station according to claim 13, wherein, The battery swapping station further includes a heating device, the heating device being connected to the fluid delivery mechanism and configured to heat the fluid.

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