Batteries and electrical devices

Abstract

The embodiment of the present application provides a battery and an electrical device, wherein the battery includes a housing, a bearing component, a battery cell and a first seal. The housing has a first opening, and the bearing component is used to cover the first opening to enclose with the housing to form a first accommodating cavity. The battery cell is accommodated in the first accommodating cavity and connected to the bearing component, and the first seal is at least partially disposed between the housing and the bearing component to seal the first opening. The embodiment of the present application adds a first seal to the battery and disposes the first seal between the housing and the bearing component, thereby reducing the risk of water vapor or dust in the environment entering the first opening, reducing the probability of the battery cell contacting with liquid or dust, and improving the safety and service life of the battery, and can be applied to harsh working conditions such as wading.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more specifically, to a battery and an electrical device. Background Art

[0002] Batteries are usually used in conjunction with electrical devices such as vehicles to provide electrical energy to the electrical devices. However, during the use of electrical devices, water or dust may easily enter the battery, thereby affecting the safety of the battery and the electrical device. Summary of the invention

[0003] In view of the above problems, the present application provides a battery and an electrical device, which can improve battery safety.

[0004] In a first aspect, an embodiment of the present application provides a battery, comprising a box, a bearing component, a battery cell, and a first sealing member. The box has a first opening, and the bearing component is used to cover the first opening to enclose with the box to form a first accommodating cavity. The battery cell is accommodated in the first accommodating cavity and connected to the bearing component, and the first sealing member is at least partially disposed between the box and the bearing component to seal the first opening.

[0005] In the embodiment of the present application, a first seal is added to the battery and the first seal is arranged between the box body and the supporting component, thereby reducing the risk of water vapor or dust in the environment entering the first opening, reducing the probability of contact between the battery cell and liquid or dust, etc., and improving the safety of battery use, so that it can be applied to harsh working conditions such as wading.

[0006] In some embodiments, the thickness of the bearing component is H, 0.4 mm≤H≤30 mm.

[0007] In the embodiment of the present application, while ensuring reliable connection between the battery and the vehicle, sufficient space can be provided inside the battery for arranging battery cells.

[0008] In some embodiments, 0.5 mm ≤ H ≤ 10 mm.

[0009] In some embodiments, the thickness of the bearing component is H, the weight of the battery is M, and H and M satisfy: 0.0004 mm / kg<H / M≤3 mm / kg.

[0010] In the embodiment of the present application, while ensuring the overall strength of the battery, it is ensured that the battery has a certain energy density to achieve long-term use of the vehicle.

[0011] In some embodiments, 0.006 mm / kg<H / M≤1 mm / kg.

[0012] In some embodiments, the bearing component includes a bearing plate and a connecting plate disposed on the side of the bearing plate away from the box body, and the first sealing member is disposed between the bearing plate and the box body. The connecting plate is an annular structure, and the connecting plate and the bearing plate are enclosed to form a second accommodating cavity, and the second accommodating cavity forms a second opening at one end away from the bearing plate.

[0013] In the embodiment of the present application, by providing a connecting plate, additional space for arranging electronic devices can be provided inside the battery, thereby further improving the space utilization inside the battery and ensuring that the overall structure of the battery is compact.

[0014] In some embodiments, the first sealing member is fixedly connected to the carrier plate.

[0015] In the embodiment of the present application, by fixing the first seal on the supporting plate, the risk of dislocation of the first seal due to shaking and the like during the operation of the vehicle is reduced, thereby ensuring that the first seal can continue to maintain a good sealing effect during the operation of the vehicle, further reducing the risk of water vapor or dust in the environment entering the interior of the box, and improving the safety of the battery.

[0016] In some embodiments, the battery further includes a cover plate and a second sealing member, wherein the cover plate is used to cover the second opening, and at least a portion of the second sealing member is disposed between the cover plate and the connecting plate to seal the second opening.

[0017] In the embodiment of the present application, the second seal is located between the cover plate and the connecting plate, that is, near the connection between the vehicle chassis and the battery. The second seal can reduce the risk of water vapor or dust entering the second accommodating cavity, thereby improving the reliability of the electronic equipment in the second accommodating cavity. It can also reduce the risk of water vapor or dust entering the interior of the vehicle from the connection between the vehicle chassis and the battery, thereby improving the safety of the vehicle.

[0018] In some embodiments, the battery further includes a control box, which is received in the second receiving cavity and electrically connected to the battery cells.

[0019] In the embodiment of the present application, the control box is disposed in the second accommodation cavity inside the battery, so that the distance between the control box and the battery cell is shorter, thereby facilitating the electrical connection between the battery cell and the control box.

[0020] In some embodiments, the connecting plate includes a side wall and a top wall, the top wall is arranged opposite to the supporting plate and encloses the second opening, and the side wall is arranged around the top wall and connected to the supporting plate.

[0021] In the embodiment of the present application, the top wall is located on the side of the side wall away from the load-bearing plate, the top wall is an annular structure, and the opening formed by the top wall is the second opening. At the same time, there is a certain angle between the top wall and the side wall. The existence of the top wall is used to provide an installation space for the cover plate, so that the cover plate can be fixedly connected to the top wall, and the connection methods include but are not limited to welding, bonding, and bolt connection.

[0022] In some embodiments, the second sealing member is fixedly connected to the top wall.

[0023] In the embodiment of the present application, by fixing the second seal on the top wall, the risk of dislocation of the second seal due to shaking and other factors during the operation of the vehicle is reduced, thereby ensuring that the second seal can continue to maintain a good sealing effect during the operation of the vehicle, further reducing the risk of water vapor or dust in the environment entering the second containing cavity and the interior of the vehicle, thereby improving safety of use.

[0024] In some embodiments, a surface of the side wall facing away from the second accommodating cavity is recessed toward the second accommodating cavity to form a guide groove, and the guide groove extends along the thickness direction of the supporting plate.

[0025] In the embodiment of the present application, the guide groove can guide the flow of the liquid. Under the action of gravity, the liquid will flow downward along the guide groove to the bearing plate. Due to the presence of the first sealing member, the liquid will not enter the box body, and will eventually leave the bearing plate with the shaking of the vehicle and the action of inertia.

[0026] In some embodiments, there are multiple guide grooves, and the multiple guide grooves are spaced apart and surround the second accommodating cavity.

[0027] In an embodiment of the present application, a plurality of guide grooves are provided on the side wall, and the plurality of guide grooves can guide the flow of the liquid, thereby helping the liquid to leave the chassis and the side wall of the vehicle as quickly as possible.

[0028] In some embodiments, at least one of the first seal and the second seal is an annular structure.

[0029] In the embodiment of the present application, the first seal and the second seal are both used to improve the sealing effect. Setting at least one of the first seal and the second seal as an annular structure can reduce the size of the first seal or the second seal while ensuring the sealing effect, thereby reducing material waste.

[0030] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery in any of the aforementioned embodiments, and the battery is used to provide electrical energy.

[0031] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0034] Figure 2 An exploded schematic diagram of a battery provided in some embodiments of the present application;

[0035] Figure 3 for Figure 2 A schematic diagram of the structure of some components in the battery shown;

[0036] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of the middle region Q;

[0037] Figure 5 A schematic diagram of the structure of a load-bearing component in a battery provided in some embodiments of the present application;

[0038] Figure 6 A schematic diagram of the structure of some components of a battery provided in some embodiments of the present application.

[0039] In the drawings, the drawings are not drawn to scale.

[0040] In the attached figure:

[0041] 1000. Vehicles;

[0042] 100, battery; 200, controller; 300, motor;

[0043] 11. Box body; 111. First opening; 112. First accommodating cavity; 113. Upper top plate; 114. Side beam structure; 12. Carrying component; 121. Carrying plate; 122. Connecting plate; 1221. Top wall; 1222. Side wall; 1223. Guide groove; 123. Second accommodating cavity; 124. Second opening; 13. Battery cell; 14. First sealing member; 15. Cover plate; 16. Second sealing member; 17. Control box;

[0044] X, thickness direction. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0047] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0048] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0050] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0051] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0052] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0055] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0056] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly 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 collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current passes without melting, 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 diaphragm may be polypropylene (PP) or polyethylene (PE), etc. In addition, the electrode assembly may be a winding structure or a laminated structure, and the embodiments of the present application are not limited thereto.

[0057] For electrical devices such as vehicles, the applicant has noticed that during the use of the battery, the battery is prone to water or dust ingress.

[0058] The applicant found that the water ingress problem occurs because: the battery is part of an electrical device such as a vehicle, and the battery is currently fixed to the vehicle by bolts and other means. Bolted connection cannot achieve sealing between the battery and the vehicle, resulting in liquid or dust infiltrating into the battery through the connection between the vehicle and the battery in harsh working conditions such as wading, causing water or dust to enter the battery, thereby affecting the normal use and safety of the battery and the vehicle.

[0059] Based on the above problems found by the applicant, the present application provides a battery, which includes a box, a bearing component, a battery cell and a first sealing member. The box has a first opening, and the bearing component is used to cover the first opening to enclose with the box to form a first accommodating cavity. The battery cell is accommodated in the first accommodating cavity and connected to the bearing component, and the first sealing member is at least partially disposed between the box and the bearing component to seal the first opening.

[0060] The present application adds a first seal in the battery and sets the first seal between the box body and the supporting component, thereby reducing the risk of water vapor or dust in the environment entering the first opening, reducing the probability of battery cells coming into contact with liquids or dust, etc., improving the safety of battery use, and being suitable for harsh working conditions such as wading.

[0061] The technical solutions described in the embodiments of the present application are applicable to electrical devices that use batteries, such as battery vehicles, electric vehicles, ships, spacecraft, electric toys and electric tools, etc., wherein spacecrafts include airplanes, rockets, space shuttles and spacecrafts, etc., electric toys include fixed or mobile electric toys, such as electric car toys, electric ship toys and electric airplane toys, etc., and electric tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers.

[0062] The battery cells described in the embodiments of the present application are not limited to being applicable to the electrical devices described above, but for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0063] See also Figure 1 The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 may be provided inside the vehicle 1000. For example, the battery 100 may be provided at the bottom, front or rear of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used, for example, to control the battery to power the motor 300. The battery may be used for starting and navigating the vehicle 1000. Of course, the battery 100 may also be used to drive the vehicle 1000, replacing or partially replacing fuel or natural gas to provide drive for the vehicle 1000.

[0064] The structure of the battery 100 is described in detail below with reference to the accompanying drawings.

[0065] The present application embodiment provides a battery 100, see Figures 2 to 4The battery 100 includes a box body 11, a carrying component 12, a battery cell 13, and a first sealing member 14. The box body 11 has a first opening 111, and the carrying component 12 is used to cover the first opening 111 to enclose the box body 11 to form a first accommodating cavity 112. The battery cell 13 is accommodated in the first accommodating cavity 112 and connected to the carrying component 12. The first sealing member 14 is at least partially disposed between the box body 11 and the carrying component 12 to seal the first opening 111.

[0066] The case 11 has a first opening 111 connected to the outside, and the supporting component 12 covers the first opening 111 on the case 11, and together with the case 11, forms a first accommodating cavity 112 for accommodating the battery cell 13. The case 11 and the supporting component 12 can be of various structures. In some embodiments, the case 11 can be a hollow structure with one end open, and the supporting component 12 is a plate-like structure. The supporting component 12 covers the first opening 111 of the case 11 to form a first accommodating cavity 112; the case 11 and the supporting component 12 can also be hollow structures with one side open, and the open side of the supporting component 12 covers the first opening 111 of the case 11 to form a first accommodating cavity 112. Of course, the case 11 and the supporting component 12 can be of various shapes, such as a cylinder, a cuboid, etc. For example, as Figure 2 As shown, the box body 11 includes a base plate 113 and a side beam structure 114, and the base plate 113 is fixedly connected to the side beam structure 114 by bolt connection or the like.

[0067] Exemplarily, in addition to covering the first opening 111, the bearing component 12 is also used to achieve a fixed connection with the vehicle 1000. Specifically, the bearing component 12 has at least two opposite surfaces in the thickness direction X, one of which is used to be fixed to the box body 11 and cover the first opening 111, and the other surface is used to be fixed to the chassis of the vehicle 1000. In some examples, the vehicle 1000 and the bearing component 12 can be fixed by welding, bonding or bolting. Similarly, the box body 11 and the bearing component 12 can also be fixed by welding, bonding or bolting.

[0068] In the battery 100, there can be one or more battery cells 13. If there are more than one battery cell 13, the multiple battery cells 13 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 13 are both connected in series and in parallel. The multiple battery cells 13 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 13 is accommodated in the first accommodation cavity 112; of course, it is also possible that the multiple battery cells 13 are first connected in series, in parallel, or in mixed connection to form a battery 100 module, and the multiple battery 100 modules are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the first accommodation cavity 112. The specific structure of the battery cell 13 is not limited in the embodiment of the present application.

[0069] The battery cell 13 is connected to the supporting component 12, and the connection method includes but is not limited to bonding. When the battery 100 is installed on the chassis of the vehicle 1000, the battery 100 structure needs to be inverted. That is, the supporting component 12 is initially located below the battery cell 13, and when installed on the chassis of the vehicle 1000, the battery 100 is rotated 180° so that the supporting component 12 is located above the battery cell 13, and the battery 100 is fixed to the vehicle 1000 through the supporting component 12. In order to reduce the risk of misalignment of the battery cell 13 inside the box 11 due to shaking during the movement of the vehicle 1000, the battery cell 13 is connected to the supporting component 12.

[0070] The first seal 14 is at least partially disposed between the box 11 and the bearing member 12, and is used to seal the first opening 111. The first seal 14 can be fixedly connected to at least one of the box 11 or the bearing member 12 by bonding or bolting. The first seal 14 includes but is not limited to a lip seal or an extrusion seal, wherein the extrusion seal relies on the elastic deformation of the seal to create a contact pressure on the sealing contact surface, and the contact pressure is greater than the internal pressure of the sealed medium, thereby achieving a sealing effect; the lip seal achieves a sealing effect by deforming its lip under the action of force, so that the lip edge is tightly attached to the sealing surface.

[0071] The embodiment of the present application does not limit the size and shape of the first sealing member 14. Optionally, the size and shape of the outer contour of the first sealing member 14 is the same as the size and shape of the outer contour of the bearing assembly, so that the waste of space and material caused by the protrusion of the first sealing member 14 can be avoided while ensuring that the first sealing member 14 can seal the first opening 111.

[0072] The embodiment of the present application adds a first seal 14 to the battery 100, and sets the first seal 14 between the box body 11 and the supporting component 12, so as to reduce the risk of water vapor or dust in the environment entering the first opening 111, reduce the probability of the battery cell 13 contacting with liquid or dust, etc., improve the safety and service life of the battery 100, and can be used in harsh working conditions such as wading.

[0073] In some embodiments, see Figure 5 The thickness of the bearing member 12 is H, 0.4 mm ≤ H ≤ 30 mm. Exemplarily, H is one of 0.4 mm, 1 mm, 5 mm, 10 mm and 30 mm.

[0074] The thickness H of the bearing component 12 refers to the thickness dimension of the bearing component 12 at any position. It should be noted that the thickness H of the bearing component 12 should not be easily understood as the dimension of the bearing component 12 in the thickness direction X. The thickness H of the bearing component 12 needs to be judged based on the specific structure of the bearing component 12 at different positions.

[0075] The bearing component 12 is used to achieve the fixation between the battery 100 and the vehicle 1000. The size of the bearing component 12 is usually related to the installation reliability of the battery 100 and the space available for the battery cell. Specifically, if the thickness of the bearing component 12 is too small, the structural strength of the bearing component 12 itself is relatively weak, and it is difficult to ensure that the connection between the battery 100 and the vehicle 1000 is reliable under long-term use. In addition, if the thickness of the bearing component 12 is too small, it will also affect the tight connection between it and the first seal, which is likely to have an adverse effect on the sealing effect of the first seal 14.

[0076] If the thickness of the bearing component 12 is too large, the overall weight of the battery 100 will increase. Furthermore, under the premise that the total volume of the battery 100 is constant, the space available for battery cells in the battery 100 will decrease, which is not conducive to the long-term use of the battery 100 in the vehicle 1000.

[0077] Therefore, the embodiment of the present application sets the thickness H of the bearing component 12 to 0.4 mm-30 mm, so that the battery 100 can have sufficient space inside the battery 100 for arranging battery cells while ensuring reliable connection between the battery 100 and the vehicle 1000. Further, in some optional embodiments, 0.5 mm ≤ H ≤ 10 mm. Exemplarily, H is one of 0.5 mm, 1 mm, 5 mm, 7 mm and 10 mm.

[0078] In some embodiments, the thickness of the bearing member 12 is H, the weight of the battery 100 is M, and H and M satisfy: 0.0004 mm / kg<H / M≤3 mm / kg. Exemplarily, H / M is one of 0.0004 mm / kg, 0.001 mm / kg, 0.01 mm / kg, 1 mm / kg, and 3 mm / kg.

[0079] As can be seen from the above, the thickness of the bearing component 12 is related to the installation reliability of the battery 100 and the space available for the battery cell 13. On this basis, the weight of the battery cell 13 inside the battery 100 also needs to be limited.

[0080] Specifically, when H / M is too small, it indicates that the thickness of the bearing component 12 is insufficient relative to the battery cell 13, and its structural strength is weak, making it difficult to ensure the fixation between the battery 100 and the vehicle 1000 and the sealing effect of the first seal 14. At the same time, the overall reliability of the battery 100 is insufficient, and safety accidents such as fire and explosion are prone to occur. When H / M is too large, it indicates that the number or volume of the battery cells 13 inside the battery 100 is too small, resulting in the overall energy density of the battery 100 being too low, and the bearing component 12 occupies too much space in the battery 100, resulting in space waste.

[0081] In summary, the embodiment of the present application controls the thickness of the load-bearing component 12 and the weight of the battery 100 at the same time, so that 0.0004mm / kg<H / M≤3mm / kg. While ensuring the overall strength of the battery 100, it is ensured that the battery 100 has a certain energy density to achieve long-term use of the vehicle 1000. Further, in some optional embodiments, 0.006mm / kg<H / M≤1mm / kg. Exemplarily, H / M is one of 0.006mm / kg, 0.01mm / kg, 0.05mm / kg, 0.1mm / kg and 1mm / kg.

[0082] In some embodiments, see Figure 2 and Figure 6 The bearing component 12 includes a bearing plate 121 and a connecting plate 122 disposed on the side of the bearing plate 121 away from the box body 11, and the first sealing member 14 is disposed between the bearing plate 121 and the box body 11. The connecting plate 122 is an annular structure, and the connecting plate 122 and the bearing plate 121 are enclosed to form a second accommodating cavity 123, and the end of the second accommodating cavity 123 away from the bearing plate 121 forms a second opening 124.

[0083] The bearing plate 121 is a part of the bearing component 12 used to achieve connection and fixation with the box body 11. The box body 11 and the bearing plate 121 can be fixed by welding, bonding or bolting. The first sealing member 14 is located between the bearing plate 121 and the box body 11. Optionally, the outer contour of the orthographic projection of the first sealing member 14 on the bearing plate 121 completely covers the orthographic projection of the first opening 111 on the bearing plate 121, and coincides with the outer contour of the bearing plate 121. This design can ensure the sealing effect of the first sealing member 14 on the first opening 111 while avoiding the waste of space and materials caused by the protrusion of the first sealing member 14.

[0084] The connecting plate 122 is located on the side of the carrying plate 121 away from the box body 11. The connecting plate 122 is a part of the carrying component 12 used to achieve connection and fixation with the base of the vehicle 1000. The connecting plate 122 is an annular structure and surrounds to form a second accommodating cavity 123. The second accommodating cavity 123 is used to set electronic equipment such as a high-voltage box that needs to be electrically connected to the battery 100. At the same time, a second opening 124 is formed at one end of the second accommodating cavity 123 away from the carrying plate 121. The existence of the second opening 124 is used to transfer electronic equipment from the outside to the second accommodating cavity 123.

[0085] In addition, the embodiment of the present application does not limit the size between the connecting plate 122 and the carrying plate 121. For example, the orthographic projection of the connecting plate 122 on the carrying plate 121 is located within the outer contour of the carrying plate 121. The existence of the connecting plate 122 can separate the carrying plate 121 from the chassis of the vehicle 1000, that is, the separation between the box body 11 and the chassis of the vehicle 1000 can be achieved. This design can reduce the risk of residual liquid on the chassis of the vehicle 1000 penetrating into the interior of the box body 11, thereby further improving the safety of the battery 100.

[0086] In the embodiment of the present application, by providing the connecting plate 122 , there is an additional space in the battery 100 for arranging electronic devices, thereby further improving the space utilization inside the battery 100 and ensuring that the overall structure of the battery 100 is compact.

[0087] In some embodiments, Figure 4 As shown, the first seal 14 is fixedly connected to the carrier plate 121. The first seal 14 can be fixed to the carrier plate 121 by bonding or the like. In the embodiment of the present application, by fixing the first seal 14 to the carrier plate 121, the risk of the first seal 14 being misplaced due to factors such as shaking during the operation of the vehicle 1000 is reduced, and the first seal 14 can continue to maintain a good sealing effect during the operation of the vehicle 1000, further reducing the risk of water vapor or dust in the environment entering the interior of the box body 11, thereby improving the safety of the battery 100.

[0088] In some embodiments, Figure 2 and Figure 6 As shown, the battery 100 further includes a cover plate 15 and a second sealing member 16 . The cover plate 15 is used to cover the second opening 124 . At least a portion of the second sealing member 16 is disposed between the cover plate 15 and the connecting plate 122 to seal the second opening 124 .

[0089] The cover plate 15 is used to cover the second opening 124, and the cover plate 15 and the connecting plate 122 can be fixed by welding, bonding or bolting. The second sealing member 16 is at least partially disposed between the connecting plate 122 and the cover plate 15, and is used to seal the second opening 124. The second sealing member 16 can be fixedly connected to at least one of the cover plate 15 or the connecting plate 122 by bonding or bolting. Similar to the first sealing member 14, the second sealing member 16 also includes but is not limited to a lip seal or an extrusion seal.

[0090] The embodiment of the present application does not limit the size and shape of the second sealing member 16. Optionally, the outer contour of the orthographic projection of the second sealing member 16 on the cover plate 15 covers the orthographic projection of the second opening 124 on the cover plate 15 and coincides with the outer contour of the cover plate 15. In this way, the waste of space and material caused by the protrusion of the second sealing member 16 can be avoided while ensuring that the first sealing member 14 can seal the second opening 124.

[0091] The embodiment of the present application adds a second seal 16 on the basis of the first seal 14, and the second seal 16 is located between the cover plate 15 and the connecting plate 122, that is, located near the connection between the chassis of the vehicle 1000 and the battery 100. The provision of the second seal 16 can reduce the risk of water vapor or dust entering the second accommodating cavity 123, thereby improving the reliability of the electronic equipment in the second accommodating cavity 123. Secondly, it can also reduce the risk of water vapor or dust entering the interior of the vehicle 1000 from the connection between the chassis of the vehicle 1000 and the battery 100, thereby improving the safety of the vehicle 1000.

[0092] In some embodiments, the battery 100 further includes a control box 17 , which is received in the second receiving cavity 123 and electrically connected to the battery cell 13 .

[0093] The control box 17 is an electronic device disposed in the second accommodating cavity 123, and includes but is not limited to relays and other voltage controllers and current controllers. The control box 17 is electrically connected to the battery cell 13 and is used to control the operation of the vehicle 1000. Optionally, the control box 17 is also electrically connected to the controller of the vehicle 1000. The battery 100 is used to provide energy for the operation of the vehicle 1000. The controller and the control box cooperate to transmit electrical energy to different devices of the vehicle 1000 to achieve different functions.

[0094] In the embodiment of the present application, the control box 17 is disposed in the second accommodating cavity 123 inside the battery 100 , so that the distance between the control box and the battery cell 13 is short, thereby facilitating the electrical connection between the battery cell 13 and the control box 17 .

[0095] In some embodiments, Figure 6As shown, the connecting plate 122 includes a side wall 1222 and a top wall 1221 . The top wall 1221 is disposed opposite to the supporting plate 121 and encloses the second opening 124 . The side wall 1222 is disposed around the top wall 1221 and connected to the supporting plate 121 .

[0096] The side wall 1222 is a closed-loop structure surrounding the outer periphery of the second accommodating cavity 123 . The side wall 1222 is also fixedly connected to the supporting plate 121 . The connection methods between the side wall 1222 and the supporting plate 121 include but are not limited to welding, bonding, and bolt connection.

[0097] The top wall 1221 is located on the side of the side wall 1222 away from the bearing plate 121. The top wall 1221 is an annular structure, and the opening formed by the top wall 1221 is the second opening 124. At the same time, there is a certain angle between the top wall 1221 and the side wall 1222. The existence of the top wall 1221 is used to provide an installation space for the cover plate 15, so that the cover plate 15 can be fixedly connected to the top wall 1221, and the connection methods include but are not limited to welding, bonding, and bolt connection.

[0098] It should be noted that in the embodiment of the present application, the thickness H of the bearing component 12 has various situations. Specifically, the bearing component 12 includes a bearing plate 121 and a connecting plate 122. At the position of the bearing plate 121, the thickness H of the bearing component 121 is the thickness dimension of the bearing plate 121 in the thickness direction X. At the position of the connecting plate 122, the connecting plate 122 includes a side wall 1222 and a top wall 1221, and the thickness direction of the side wall 1222 is not parallel to the thickness direction of the top wall 1221. Therefore, the thickness H of the bearing component 121 at the connecting plate 122 should be understood as the wall thickness at the corresponding position of the connecting plate 122. Figure 5 Only the thickness H of the carrying component 12 at the carrying plate 121 is shown schematically.

[0099] In some optional embodiments, the top wall 1221 is parallel to the carrier plate 121 and forms a 90° angle with the side wall 1222. In this way, the cover plate 15 can be installed parallel to the carrier plate 121. Further, when the battery 100 is installed in the vehicle 1000, the chassis of the vehicle 1000 and the battery 100 are installed as parallel as possible, thereby improving installation reliability.

[0100] In some embodiments, the second seal 16 is fixedly connected to the top wall 1221, and the second seal 16 can be fixed to the top wall 1221 by bonding or the like. In the embodiment of the present application, the second seal 16 is fixed to the top wall 1221, thereby reducing the risk of the second seal 16 being misplaced due to factors such as shaking during the operation of the vehicle 1000, ensuring that the second seal 16 can continue to maintain a good sealing effect during the operation of the vehicle 1000, further reducing the risk of water vapor or dust in the environment entering the second accommodating cavity 123 and the interior of the vehicle 1000, and improving the safety of use.

[0101] In some embodiments, Figure 6 As shown, the surface of the side wall 1222 away from the second accommodating cavity 123 is recessed toward the second accommodating cavity 123 to form a guide groove 1223 , and the guide groove 1223 extends along the thickness direction X of the carrying plate 121 .

[0102] The surface of the side wall 1222 away from the second accommodating cavity 123 is the outer surface of the side wall 1222, and the outer surface of the side wall 1222 has a guide groove 1223 extending along the thickness direction X of the bearing plate 121. When the vehicle 1000 is in a harsh working condition such as wading, some liquid will splash onto the chassis of the vehicle 1000 or the side wall 1222 by splashing or the like. In this case, the existence of the guide groove 1223 can guide the flow of the liquid, and the liquid will flow downward along the guide groove 1223 under the action of gravity and flow to the bearing plate 121. Due to the existence of the first sealing member 14, the liquid will not enter the box body 11, and eventually leave the bearing plate 121 with the shaking of the vehicle 1000 and the action of inertia.

[0103] In some embodiments, there are multiple guide grooves 1223 , and the multiple guide grooves 1223 are spaced apart and surround the second accommodating cavity 123 .

[0104] The side wall 1222 is provided with a plurality of guide grooves 1223, which can guide the flow of the liquid, thereby helping the liquid to leave the chassis of the vehicle 1000 and the side wall 1222 as quickly as possible. In some embodiments, the plurality of guide grooves 1223 are evenly distributed on the side wall 1222 at the same interval distance, thereby improving the guiding effect on the liquid.

[0105] In some embodiments, at least one of the first seal 14 and the second seal 16 is an annular structure.

[0106] The first seal 14 and the second seal 16 are both used to improve the sealing effect. Setting at least one of the first seal 14 and the second seal 16 as an annular structure can reduce the size of the first seal 14 or the second seal 16 while ensuring the sealing effect, thereby reducing material waste. Furthermore, the first seal 14 and the second seal 16 are both annular sealing ring structures.

[0107] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery 100 in any of the aforementioned embodiments, and the battery 100 is used to provide electrical energy.

[0108] It should be noted that the electrical device provided in the embodiment of the present application has the beneficial effects of the battery 100 in any of the aforementioned embodiments. Please refer to the aforementioned description of the battery 100 for details, and the embodiment of the present application will not be repeated.

[0109] According to some embodiments of the present application, please refer to Figures 2 to 6 The battery 100 includes a box body 11, a carrying component 12, a battery cell 13, a first sealing member 14 and a second sealing member 16. The box body 11 has a first opening 111. The carrying component 12 is used to cover the first opening 111 to form a first accommodating cavity 112 together with the box body 11. The battery cell 13 is accommodated in the first accommodating cavity 112 and connected to the carrying component 12.

[0110] The bearing member 12 includes a bearing plate 121 and a connecting plate 122 disposed on a side of the bearing plate 121 away from the box body 11. The first sealing member 14 is disposed between the bearing plate 121 and the box body 11 and is fixedly connected to the bearing plate 121 to seal the first opening 111. The connecting plate 122 is an annular structure, and the connecting plate 122 is an annular structure and includes a side wall 1222 and a top wall 1221. The top wall 1221 is located on a side of the side wall 1222 away from the bearing plate 121 and encloses a second opening 124. The second sealing member 16 is fixedly connected to the top wall 1221 to seal the second opening 124.

[0111] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: include: A box body having a first opening; A bearing component, used for covering the first opening to form a first accommodating cavity with the box body; A battery cell, accommodated in the first accommodation cavity and connected to the supporting component; as well as a first sealing member, at least partially disposed between the box body and the bearing member to seal the first opening; The bearing component includes a bearing plate and a connecting plate arranged on a side of the bearing plate away from the box body, and a first sealing member is arranged between the bearing plate and the box body; the connecting plate is an annular structure, and the connecting plate and the bearing plate are enclosed to form a second accommodating cavity, and an end of the second accommodating cavity away from the bearing plate forms a second opening; The battery further includes a cover plate and a second sealing member, wherein the cover plate is used to cover the second opening, and at least a portion of the second sealing member is disposed between the cover plate and the connecting plate to seal the second opening; The orthographic projection of the connecting plate on the carrying plate is located within the outer contour of the carrying plate.

2. The battery according to claim 1, characterized in that The thickness of the bearing component is H, 0.4 mm ≤ H ≤ 30 mm.

3. The battery according to claim 2, characterized in that 0.5mm≤H≤10mm.

4. The battery according to any one of claims 1 to 3, characterized in that: The thickness of the bearing component is H, the weight of the battery is M, and H and M satisfy: 0.0004 mm / kg<H / M≤3 mm / kg.

5. The battery according to claim 4, characterized in that H and M satisfy: 0.006mm / kg<H / M≤1mm / kg.

6. The battery according to claim 1, characterized in that The first sealing member is fixedly connected to the supporting plate.

7. The battery according to claim 1 or 6, characterized in that: It also includes a control box, which is accommodated in the second accommodation cavity and electrically connected to the battery cell.

8. The battery according to claim 1, characterized in that The connecting plate includes a side wall and a top wall. The top wall is arranged opposite to the bearing plate and encloses the second opening. The side wall is arranged around the top wall and connected to the bearing plate.

9. The battery according to claim 8, characterized in that The second sealing member is fixedly connected to the top wall.

10. The battery according to claim 8, characterized in that The surface of the side wall away from the second accommodating cavity is recessed toward the direction close to the second accommodating cavity to form a guide groove, and the guide groove extends along the thickness direction of the carrying plate.

11. The battery according to claim 10, characterized in that There are multiple guide grooves, and the multiple guide grooves are spaced around the second accommodating cavity.

12. The battery according to claim 1, characterized in that At least one of the first seal and the second seal is an annular structure.

13. An electrical device, characterized in that: The invention comprises a battery according to any one of claims 1 to 12, wherein the battery is used to provide electrical energy.

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