Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment, the battery comprises a shell, a pole core assembly, a gas guide assembly and an explosion-proof valve, the shell comprises a containing cavity, a first shell wall and a second shell wall, the first shell wall and the second shell wall are located on the two sides of the containing cavity, a gas guide groove is formed in the inner side of the first shell wall, and the pole core assembly and the pole core assembly are both arranged in the containing cavity; the air guide assembly is provided with at least one air guide channel, one end of the air guide channel communicates with the air guide groove, and the other end of the air guide channel corresponds to the anti-explosion valve. The battery provided by the utility model is relatively high in safety.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery and an electrical device. Background Technology

[0002] In related technologies, a battery cell includes a casing and a bare cell. The bare cell and electrolyte are encapsulated in the casing. The bare cell includes a positive electrode, a separator, and a negative electrode stacked in sequence. The positive electrode, the negative electrode, and the electrolyte participate in an electrochemical reaction, thereby realizing the storage and release of electrical energy.

[0003] When the charging and discharging temperature of a battery cell is too high or too low, gas can easily be generated inside the battery cell. The gap between the bare cell and the casing is small, which makes it difficult for the gas generated inside the battery cell to escape. This can easily lead to safety problems such as explosion and fire of the battery cell. Utility Model Content

[0004] Based on this, this application provides a battery and an electrical device to address the shortcomings of related technologies.

[0005] In a first aspect, this application provides a battery, comprising:

[0006] The outer shell includes a receiving cavity, the receiving cavity having a first shell wall and a second shell wall, the first shell wall and the second shell wall being located on both sides of the receiving cavity, and the first shell wall having an air guide groove communicating with the receiving cavity.

[0007] The core component is housed within the receiving cavity;

[0008] A gas guiding assembly is disposed in the receiving cavity. The gas guiding assembly has at least one gas guiding channel on the side facing the core assembly, and one end of the gas guiding channel is connected to the gas guiding groove.

[0009] An explosion-proof valve is installed on the second shell wall, and the other end of the gas guide channel is correspondingly installed with the explosion-proof valve.

[0010] In one possible implementation, the projection of the port of the air guide channel toward the first shell wall onto the first shell wall is located within the air guide groove.

[0011] In one possible implementation, the air guide groove includes at least one sub-groove extending along at least one of the length and width directions of the first shell wall.

[0012] In one possible implementation, the sub-slot includes a first sub-slot and a second sub-slot, the first sub-slot extending along the length direction of the first shell wall, and the second sub-slot extending along the width direction of the first shell wall, the first sub-slot and the second sub-slot being staggered and interconnected.

[0013] The air guide channel is connected to at least one of the first sub-slot and the second sub-slot.

[0014] In one possible implementation, the battery further includes an explosion-proof valve, and the housing further includes a second housing wall, with the first housing wall and the second housing wall located on opposite sides of the receiving cavity, and the explosion-proof valve disposed on the second housing wall.

[0015] There is an exhaust gap between the second shell wall and the core assembly, and the end of the air guide channel opposite to the first shell wall is connected to the exhaust gap.

[0016] In one possible implementation, the air guide assembly has an enclosing cavity, the core assembly is located within the enclosing cavity, and the air guide channel is open to one side of the core assembly to communicate with the enclosing cavity.

[0017] In one possible implementation, the core assembly has a flat region and a corner region, with the corner region located on opposite sides of the flat region;

[0018] The cavity wall surrounding the cavity includes a planar area and an arcuate area. The planar area is set to correspond to the straight area, and the arcuate area is set to correspond to the corner area.

[0019] In one possible implementation, there are at least two air channels, which are spaced apart and extend in the same direction.

[0020] There are supporting ribs between two adjacent air channels, and the extension direction of the supporting ribs is consistent with the extension direction of the air channels.

[0021] In one possible implementation, there are at least two air channels, which are spaced apart and extend at an angle to each other.

[0022] In one possible implementation, the outer shell further includes a third shell wall, with the first shell wall and the third shell wall located on adjacent sides of the receiving cavity, and the third shell wall connected to the first shell wall;

[0023] The gas guiding assembly includes a first gas guiding element, at least a portion of which is located on the side of the pole core assembly facing the third shell wall, and the side of the first gas guiding element facing the pole core assembly has a gas guiding channel.

[0024] In one possible implementation, the outer shell further includes a fourth shell wall, which is located on opposite sides of the receiving cavity, and the fourth shell wall is connected to the first shell wall.

[0025] The gas guiding assembly includes a second gas guiding element, at least a portion of which is located on the side of the pole core assembly facing the fourth shell wall, and the side of the second gas guiding element facing the pole core assembly has a gas guiding channel.

[0026] Secondly, this application provides an electrical device, including an electrical appliance and the battery provided in the first aspect, wherein the battery supplies power to the electrical appliance.

[0027] The battery and electrical device provided in this application include a battery housing, a core assembly, a venting assembly, and an explosion-proof valve. The housing includes a receiving cavity, which comprises a first shell wall and a second shell wall. The first shell wall includes a venting groove, and the venting assembly includes a venting channel. The battery uses the receiving cavity to house the core assembly and the venting assembly, and the core assembly is used to store and release electrical energy. Since the second shell wall and the first shell wall are located on opposite sides of the receiving cavity, and the explosion-proof valve is located on the second shell wall, when the battery pressure is too high, it is necessary to release pressure through the explosion-proof valve located on the second shell wall. The battery of this application, by providing a venting groove on the inner side of the first shell wall and a venting channel in the venting assembly, and connecting the venting groove and the venting channel, allows the venting groove to guide the gas accumulated between the core assembly and the first shell wall, thereby guiding the gas along the venting groove to the venting channel, and then guiding the gas through the venting channel to the explosion-proof valve, and finally discharging it outside the receiving cavity through the explosion-proof valve. This prevents the battery from catching fire or exploding due to gas production, thereby improving battery safety.

[0028] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the batteries and electrical devices provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the battery structure provided in an embodiment of this application;

[0031] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0032] Figure 3 This is a schematic diagram of the internal structure of a battery provided in an embodiment of this application;

[0033] Figure 4 Another internal structure diagram of the battery provided in the embodiments of this application;

[0034] Figure 5 This is a schematic diagram of the structure of the first shell wall in the battery provided in an embodiment of this application;

[0035] Figure 6 for Figure 3 Schematic diagram of the central air guide assembly;

[0036] Figure 7 This is a schematic diagram of the structure of the first gas guide in the battery provided in an embodiment of this application;

[0037] Figure 8 This is another structural schematic diagram of the first gas guide in the battery provided in the embodiments of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100 - Outer shell; 110 - Receiving cavity; 120 - First shell wall; 121 - Air guide groove; 1211 - Sub-groove; 12111 - First sub-groove; 12112 - Second sub-groove; 130 - Second shell wall; 140 - Third shell wall; 150 - Fourth shell wall;

[0040] 200-core module;

[0041] 300 - Air guiding assembly; 310 - Air guiding channel; 320 - Enclosing cavity; 321 - Planar area; 322 - Arc area; 330 - Supporting rib; 300a - First air guiding component; 300b - Second air guiding component;

[0042] 400-Explosion-proof valve. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0047] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0048] In related technologies, a battery cell includes a casing and a bare cell. The bare cell and electrolyte are encapsulated in the casing. The bare cell includes a positive electrode, a separator, and a negative electrode stacked in sequence. The positive electrode, the negative electrode, and the electrolyte participate in an electrochemical reaction, thereby realizing the storage and release of electrical energy.

[0049] When the charging and discharging temperature of a battery cell is too high or too low, gas can easily be generated inside the battery cell. The gap between the bare cell and the casing is small, which makes it difficult for the gas generated inside the battery cell to escape. This can easily lead to safety problems such as explosion and fire of the battery cell.

[0050] In view of this, this application provides a battery and an electrical device, wherein a gas guide groove is provided on the inner side of the first shell wall to form a gap between the first shell wall and the electrode core assembly, and the gas guide assembly is provided with a gas guide channel so that gas flows along the gas guide groove to the gas guide channel and is discharged outside the receiving cavity, thereby improving the safety of the battery.

[0051] The specific implementation methods of the battery and electrical equipment provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0052] Reference Figures 1 to 5As shown, the battery provided in this embodiment includes a casing 100, a core assembly 200, a gas guiding assembly 300, and an explosion-proof valve 400. The casing 100 includes a receiving cavity 110, a first shell wall 120, and a second shell wall 130. The first shell wall 120 and the second shell wall 130 constitute part of the cavity wall of the receiving cavity 110. A gas guiding groove 121 is provided on the inner side of the first shell wall 120. The core assembly 200 and the first shell wall 120 are both disposed in the receiving cavity 110. The gas guiding assembly 300 and the first shell wall 120 are located on adjacent sides of the core assembly 200. The gas guiding assembly 300 is provided with at least one gas guiding channel 310. One end of the gas guiding channel 310 facing the first shell wall 120 is connected to the gas guiding groove 121, and the other end of the gas guiding channel 310 is correspondingly disposed with the explosion-proof valve 400.

[0053] In this embodiment, the outer shell 100 is used to define the receiving cavity 110, thereby encapsulating the electrode core assembly 200 and the electrolyte. The first shell wall 120 and the second shell wall 130 are used to surround both sides of the electrode core assembly 200 to form at least a portion of the cavity wall of the receiving cavity 110.

[0054] The electrode core component 200 is used to participate in electrochemical reactions, thereby storing and releasing electrical energy. Since the electrode core component 200 or the electrolyte is prone to generating gas under conditions such as overcharging and discharging, and the space of the containment cavity 110 is limited, the generated gas will cause the gas pressure in the containment cavity 110 to rise, which will lead to battery safety problems.

[0055] It should be understood that the core assembly 200 may include a positive electrode sheet, a separator and a negative electrode sheet stacked in sequence. The positive electrode sheet, separator and negative electrode sheet can be wound after being stacked in sequence to form a wound core assembly 200. Alternatively, the positive electrode sheet, separator and negative electrode sheet can be stacked alternately in sequence to form a stacked core assembly 200.

[0056] Since the first shell wall 120 has a gas guide groove 121 on the inner side facing the core assembly 200, there is a gap between the side of the core assembly 200 facing the first shell wall 120 and the bottom of the gas guide groove 121. This gap can be used to guide the gas accumulated between the core assembly 200 and the first shell wall 120, which is conducive to guiding the gas between the first shell wall 120 and the core assembly 200 to be discharged.

[0057] Furthermore, the gas guiding assembly 300 is provided with a gas guiding channel 310, and the gas guiding groove 121 is connected to the gas guiding channel 310. The gas guiding channel 310 is used to guide the gas generated inside the core assembly 200. In this way, the gas between the first shell wall 120 and the core assembly 200 can flow along the gas guiding groove 121 to the gas guiding channel 310, which is conducive to guiding the gas to be discharged outside the receiving cavity 110. Thus, when the gas pressure in the receiving cavity 110 is abnormal, the pressure can be released through the explosion-proof valve 400.

[0058] The air guide channel 310 can be located on the side of the air guide assembly 300 facing the core assembly 200.

[0059] It should be noted that the venting component 300 can be disposed between the outer casing 100 and the electrode core component 200. The venting component 300 can be made of a rigid material. In this way, the venting component 300 can fill the gap between the outer casing 100 and the electrode core component 200, thereby fixing the electrode core component 200 and suppressing its expansion. This prevents the venting channel 310 from being blocked due to the expansion of the electrode core component 200. Furthermore, after the venting component 300 fills the gap between the outer casing 100 and the electrode core component 200, it can reduce the electrolyte floating between the outer casing 100 and the electrode core component 200, thereby reducing the amount of gas produced by the battery and improving the safety of the battery.

[0060] The battery provided in this embodiment includes a casing 100, a core assembly 200, a venting assembly 300, and an explosion-proof valve 400. The casing 100 includes a receiving cavity 110, a first casing wall 120, and a second casing wall 130. The first casing wall 120 includes a venting groove 121, and the venting assembly 300 includes a venting channel 310. The battery uses the receiving cavity 110 to house the core assembly 200 and the venting assembly 300, and uses the core assembly 200 to store and release electrical energy. Since the inner side of the first shell wall 120 is provided with a gas guide groove 121 and the gas guide assembly 300 is provided with a gas guide channel 310, the gas guide groove 121 is connected to the gas guide channel 310. The gas guide groove 121 can guide the gas accumulated between the electrode core assembly 200 and the first shell wall 120, and then guide the gas to flow along the gas guide groove 121 to the gas guide channel 310. Then, the gas is guided to flow through the gas guide channel 310 to the location of the explosion-proof valve 400, and then discharged to the outside of the receiving cavity 110 through the explosion-proof valve 400. This prevents the battery from catching fire or exploding due to gas production, thereby improving the safety of the battery.

[0061] In some embodiments, the projection of the port of the air guide channel 310 toward the first shell wall 120 onto the first shell wall 120 is located within the air guide groove 121.

[0062] This configuration allows the end of the air guide channel 310 facing the first shell wall 120 to be connected to the air guide groove 121, thereby allowing the gas accumulated between the first shell wall 120 and the core assembly 200 to flow along the air guide groove 121 to the air guide channel 310, thus facilitating the gas to be discharged from the receiving cavity 110 through the exhaust channel.

[0063] Reference Figure 5 As shown, in some embodiments, the air guide groove 121 includes at least one sub-groove 1211, which extends along at least one of the length direction and the width direction of the first shell wall 120.

[0064] In other words, there can be one or more sub-slots 1211, and all of the one or more sub-slots 1211 can extend along the length direction of the first shell wall 120, and at least one sub-slot 1211 is connected to the air guide channel 310.

[0065] Alternatively, there may be one or more sub-slots 1211, and all of the one or more sub-slots 1211 may extend along the width direction of the first shell wall 120, and at least one sub-slot 1211 may be connected to the air guide channel 310.

[0066] Alternatively, there may be multiple sub-slots 1211, at least one sub-slot 1211 may extend along the length direction of the first shell wall 120, at least one sub-slot 1211 may extend along the width direction of the first shell wall 120, and at least one sub-slot 1211 may be connected to the air guide channel 310.

[0067] In this way, the sub-slot 1211 can guide the gas to flow along the length or width of the first shell wall 120 to the gas guide channel 310, and then flow along the gas guide channel 310, thereby facilitating the gas to be discharged from the containment cavity 110.

[0068] Reference Figure 5 As shown, in some embodiments, the sub-slot 1211 includes a first sub-slot 12111 and a second sub-slot 12112. The first sub-slot 12111 extends along the length direction of the first shell wall 120, and the second sub-slot 12112 extends along the width direction of the first shell wall 120. The first sub-slot 12111 and the second sub-slot 12112 are staggered and interconnected. The air guide channel 310 is connected to the first sub-slot 12111.

[0069] In this way, the first sub-slot 12111 and the second sub-slot 12112 can together form a crisscrossing gas guide slot 121, which is conducive to guiding the gas from different parts to flow along the gas guide slot 121 to the gas guide channel 310, thereby facilitating the discharge of gas.

[0070] Reference Figure 1 and Figure 4 As shown, in one possible implementation, the battery further includes an explosion-proof valve 400, and the outer casing 100 further includes a second casing wall 130. The first casing wall 120 and the second casing wall 130 are located on opposite sides of the receiving cavity 110, and the explosion-proof valve 400 is disposed on the second casing wall 130. There is an exhaust gap between the second casing wall 130 and the electrode core assembly 200, and the end of the venting channel 310 facing away from the first casing wall 120 communicates with the exhaust gap.

[0071] It is understandable that the explosion-proof valve 400 will open when the opening pressure is reached. For example, when the valve opens, the explosion-proof valve 400 may be completely separated from the second shell wall 130, or the structure of the explosion-proof valve 400 may be partially damaged. This will cause the second shell wall 130 or the explosion-proof valve 400 to form a pressure relief channel, thereby allowing the inside of the receiving cavity 110 to communicate with the outside of the receiving cavity 110, and thus venting the gas inside the receiving cavity 110 to the outside of the receiving cavity 110, thereby reducing the gas pressure inside the receiving cavity 110.

[0072] In addition, the battery may also include a tab assembly connected to the side of the core assembly 200 facing the second housing wall 130, thereby conducting current from the core assembly 200. Since the tab assembly is positioned between the core assembly 200 and the second housing wall 130, a venting gap is defined between the second housing wall 130 and the core assembly 200. In this way, gas between the core assembly 200 and the first housing wall 120 can flow along the venting groove 121 and the venting channel 310 to the venting gap. When the explosion-proof valve 400 is opened, the gas can be discharged outside the receiving cavity 110, thereby improving battery safety.

[0073] Reference Figure 3 and Figure 6 As shown, in one possible implementation, the air guide assembly 300 has an enclosing cavity 320, the pole core assembly 200 is located in the enclosing cavity 320, and the air guide channel 310 is open on one side facing the pole core assembly 200 to communicate with the enclosing cavity 320.

[0074] In this way, the core assembly 200 can be enclosed by the surrounding cavity 320, allowing the gas guiding assembly 300 to fill the gap between the core assembly 200 and the outer shell 100. This enables the gas guiding assembly 300 to suppress the expansion of the core assembly 200, preventing the core assembly 200 from compressing the gas guiding channel 310 and causing blockage. Furthermore, the side of the gas guiding channel 310 facing the core assembly 200 can communicate with the surrounding cavity 320, allowing gas released from inside the core assembly 200 to flow along the gas guiding channel 310 to the exhaust gap, thus facilitating gas discharge to the outside of the receiving cavity 110.

[0075] Reference Figures 6 to 8 As shown, in one embodiment, the core assembly 200 has a flat region and a corner region, with the corner regions located on opposite sides of the flat region. The cavity wall surrounding the cavity 320 includes a planar region 321 and an arcuate region 322, with the planar region 321 corresponding to the flat region and the arcuate region 322 corresponding to the corner region.

[0076] In other words, the core assembly 200 can be formed by stacking and winding a positive electrode sheet, a separator, and a negative electrode sheet. In this way, the core assembly 200 will form a flat area and a corner area. The flat area is a plane, and the corner area is an outwardly convex arc surface. Correspondingly, in order for the surrounding cavity 320 to fully enclose the core assembly 200, the cavity wall of the surrounding cavity 320 can be provided with a flat area 321 and an arc surface area 322. The arc surface area 322 is an inwardly concave arc surface. The flat area 321 is arranged opposite to the flat area, and the arc surface area 322 is arranged opposite to the corner area. This reduces or eliminates the gap between the cavity wall of the surrounding cavity 320 and the outer peripheral surface of the core assembly 200, thereby effectively suppressing the expansion of the core assembly 200 and reducing the electrolyte floating between the core assembly 200 and the outer shell 100.

[0077] Reference Figures 2 to 4 , Figure 6 , Figure 7 As shown, in some embodiments, there are at least two air channels 310, which are spaced apart and extend in the same direction. A support rib 330 is provided between two adjacent air channels 310, and the extension direction of the support rib 330 is the same as that of the air channel 310.

[0078] Thus, the support rib 330 can separate at least two air channels 310, which is conducive to the diffusion of gas. Furthermore, the support rib 330 is located between two adjacent air channels 310, which can improve the deformation resistance of the air channels 310.

[0079] The support rib 330 and the air guide channel 310 can both be set perpendicular to the first shell wall 120, and the width of the support rib 330 can be smaller than the width of the air guide channel 310.

[0080] Reference Figure 8 As shown, in some embodiments, there are at least two air guide channels 310, which are spaced apart and extend at an angle to each other. This reduces the stress on the air guide assembly 300, thereby preventing the air guide channels 310 from becoming blocked due to stress.

[0081] It should be noted that, since the two air channels 310 extend at an angle, the side of the two air channels 310 facing the first shell wall 120 can form a protruding sharp angle, or the side of the two air channels 310 away from the first shell wall 120 can form a protruding sharp angle. This application embodiment does not limit this.

[0082] In some embodiments, the air guiding component 300 can be integrally formed, that is, the main body of the air guiding component 300, as well as the surrounding cavity 320 and the air guiding channel 310, can be plastically formed in one step.

[0083] Reference Figure 1 , Figure 3 , Figures 6 to 8 As shown, in one possible implementation, the outer casing 100 further includes a third casing wall 140, with the first casing wall 120 and the third casing wall 140 located on adjacent sides of the receiving cavity 110, and the third casing wall 140 connected to the first casing wall 120. The air guiding assembly 300 includes a first air guiding element 300a, at least a portion of which is located on the side of the pole core assembly 200 facing the third casing wall 140, and the side of the first air guiding element 300a facing the pole core assembly 200 is provided with an air guiding channel 310.

[0084] In one possible implementation, the outer casing 100 further includes a fourth casing wall 150, which is located on opposite sides of the receiving cavity 110, and is connected to the first casing wall 120. The gas guiding assembly 300 includes a second gas guiding member 300b, at least a portion of which is located on the side of the pole core assembly 200 facing the fourth casing wall 150, and the side of the second gas guiding member 300b facing the pole core assembly 200 has a gas guiding channel 310.

[0085] It should be understood that, for ease of processing and assembly, the outer casing 100 may include a first casing and a second casing. The first casing is integrally formed, and the second casing is welded to the first casing to form an integral outer casing 100. The first casing has a receiving cavity 110 and an opening, which communicates with the receiving cavity 110 so that the core assembly 200 and the gas guide assembly 300 are disposed within the receiving cavity 110 through the opening. The first shell wall 120, the third shell wall 140, and the fourth shell wall 150 constitute part of the shell wall of the first casing. The first shell wall 120 is located on the side of the receiving cavity 110 opposite to the opening, and the third shell wall 140 and the fourth shell wall 150 are arranged circumferentially along the opening. The second shell wall 130 constitutes the second casing, which is connected to the side of the first casing with the opening to close the opening.

[0086] In this embodiment, the first gas guide 300a can be disposed between the third shell wall 140 and the core assembly 200, so that the gas guide channel 310 located in the first gas guide 300a can guide the gas generated inside the core assembly 200 and fill the gap between the first shell wall 120 and the core assembly 200. The second gas guide 300b can be disposed between the fourth shell wall 150 and the core assembly 200, so that the gas guide channel 310 located in the second gas guide 300b can guide the gas generated inside the core assembly 200 and fill the gap between the fourth shell wall 150 and the core assembly 200.

[0087] In this embodiment, the gas guiding component 300 can be divided into a first gas guiding component 300a and a second gas guiding component 300b, and a gas guiding channel 310 is provided on both the first gas guiding component 300a and the second gas guiding component 300b to guide the gas in the receiving cavity 110.

[0088] During assembly, due to manufacturing errors in different core components 200, the thickness and width of the core components 200 vary. The separate arrangement of the first air guide 300a and the second air guide 300b has a large installation tolerance, which can eliminate the manufacturing errors of the core components 200. As a result, the enclosing cavity 320 jointly defined by the first air guide 300a and the second air guide 300b can better enclose the core components 200.

[0089] When the air guiding assembly 300 is divided into a first air guiding component 300a and a second air guiding component 300b, the first air guiding component 300a has a first half-groove and the second air guiding component 300b has a second half-groove. The first half-groove and the second half-groove are arranged opposite to each other to jointly enclose and form an enclosing cavity 320.

[0090] Based on the above embodiments, this application also provides an electrical device, which includes an electrical component and a battery provided in the above embodiments, wherein the battery supplies power to the electrical component. The structure and working principle of the battery have been described in detail in the above embodiments and will not be repeated here.

[0091] For example, the electrical device can be an electronic device such as a mobile phone or tablet computer. The electronic device such as a mobile phone or tablet computer can include a central processing unit and a display screen, and the battery is electrically connected to the electrical device, so that the current from the battery is transmitted to the electrical device.

[0092] For example, the electrical equipment can be a vehicle, the electrical device can be an electric motor, and the battery can provide electrical energy to the electric motor, which in turn drives the vehicle. The vehicle can be a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, etc., and it can also be any vehicle equipped with a battery.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery, characterized in that, include: The outer shell (100) includes a receiving cavity (110), the receiving cavity (110) having a first shell wall (120) and a second shell wall (130), the first shell wall (120) and the second shell wall (130) being located on both sides of the receiving cavity (110), the first shell wall (120) being provided with an air guide groove (121) communicating with the receiving cavity (110); The electrode core assembly (200) is housed in the receiving cavity (110). An air guiding assembly (300) is disposed in the receiving cavity (110). The air guiding assembly (300) is provided with at least one air guiding channel (310), one end of which is connected to the air guiding groove (121). An explosion-proof valve (400) is disposed on the second shell wall (130), and the other end of the gas guide channel (310) is disposed corresponding to the explosion-proof valve (400).

2. The battery according to claim 1, characterized in that, The projection of the port of the air guide channel (310) facing the first shell wall (120) onto the first shell wall (120) is located within the air guide groove (121).

3. The battery according to claim 1, characterized in that, The air guide groove (121) includes at least one sub-groove (1211) which extends along at least one of the length direction and the width direction of the first shell wall (120).

4. The battery according to claim 3, characterized in that, The sub-slot (1211) includes a first sub-slot (12111) and a second sub-slot (12112). The first sub-slot (12111) extends along the length direction of the first shell wall (120), and the second sub-slot (12112) extends along the width direction of the first shell wall (120). The first sub-slot (12111) and the second sub-slot (12112) are staggered and interconnected. The air guide channel (310) is connected to at least one of the first sub-slot (12111) and the second sub-slot (12112).

5. The battery according to any one of claims 1-4, characterized in that, The first shell wall (120) and the second shell wall (130) are located on opposite sides of the receiving cavity (110); There is an exhaust gap between the second shell wall (130) and the pole core assembly (200), and the end of the air guide channel (310) opposite to the first shell wall (120) is connected to the exhaust gap.

6. The battery according to any one of claims 1-4, characterized in that, The air guiding assembly (300) has an enclosing cavity (320), the pole core assembly (200) is located in the enclosing cavity (320), and the air guiding channel (310) is open on one side facing the pole core assembly (200) to communicate with the enclosing cavity (320).

7. The battery according to claim 6, characterized in that, The pole core assembly (200) has a flat region and a corner region, the corner region being located on opposite sides of the flat region; The cavity wall of the surrounding cavity (320) includes a planar area (321) and an arcuate area (322). The planar area (321) is corresponding to the straight area, and the arcuate area (322) is corresponding to the corner area.

8. The battery according to any one of claims 1-4, characterized in that, There are at least two air guide channels (310), and the at least two air guide channels (310) are arranged at intervals, and the at least two air guide channels (310) extend in the same direction; There is a support rib (330) between two adjacent air channels (310).

9. The battery according to any one of claims 1-4, characterized in that, There are at least two air guide channels (310), and the at least two air guide channels (310) are arranged at intervals, and the extension directions of the at least two air guide channels (310) are arranged at an angle.

10. The battery according to claim 5, characterized in that, It also includes a third shell wall (140), with the first shell wall (120) and the third shell wall (140) located on adjacent sides of the receiving cavity (110); The air guiding assembly (300) includes a first air guiding element (300a), at least a portion of which is located on the side of the pole core assembly (200) facing the third shell wall (140), and the first air guiding element (300a) is provided with the air guiding channel (310) on the side facing the pole core assembly (200).

11. The battery according to claim 10, characterized in that, It also includes a fourth shell wall (150), which and the third shell wall (140) are located on opposite sides of the receiving cavity (110); The air guiding assembly (300) includes a second air guiding member (300b), at least a portion of which is located on the side of the pole core assembly (200) facing the fourth shell wall (150), and the second air guiding member (300b) is provided with the air guiding channel (310) on the side facing the pole core assembly (200).

12. An electrical appliance, characterized in that, It includes an electrical device and a battery as described in any one of claims 1-11, wherein the battery supplies power to the electrical device.

Images