Battery device and electric device

Abstract

The utility model relates to the technical field of batteries, and provides a battery device and a power utilization device.The battery device comprises a battery box, a battery pack, a battery pack and a battery pack, the battery box comprises a lower box body, the lower box body comprises a bottom plate and a box body frame connected with the bottom plate, and a containing cavity is defined between the bottom plate and the box body frame; the battery monomer is accommodated in the accommodating cavity; the side, away from the containing cavity, of the box frame is provided with an avoiding cavity, the avoiding cavity is provided with an avoiding notch, the box frame is provided with a first hole, the first hole communicates with the containing cavity and the avoiding cavity, and the pressure relief mechanism is arranged in the avoiding cavity and blocks the first hole. According to the technical scheme, the occupation of the pressure relief mechanism on the external space of the battery box can be reduced, so that the influence of a user on a use interface can be reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] At present, with the rapid development of new energy vehicles, battery devices are increasingly entering the public's field of vision. Among them, the battery device usually includes a battery box and a battery cell arranged in the battery box. The battery box is usually provided with a pressure relief mechanism, which is used to actuate to release the internal pressure when the temperature or pressure inside the battery box reaches a preset threshold, so as to improve the safety of the battery device.

[0004] In the related art, the pressure relief mechanism is generally arranged on the outside of the battery box and protrudes outward from the battery box, occupying the external space of the battery box and affecting the user interface. Utility Model Content

[0005] The purpose of the present application is to provide a battery device and an electrical device, which are used to reduce the occupation of the pressure relief mechanism on the external space of the battery box, so as to reduce the impact on the user interface. This purpose is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a battery device, comprising: a battery box, comprising a bottom plate and a box frame arranged around the bottom plate, a accommodating cavity defined between the bottom plate and the box frame; a battery cell accommodated in the accommodating cavity; a pressure relief mechanism, wherein a avoidance cavity is provided on a side of the box frame away from the accommodating cavity, the avoidance cavity has a avoidance notch, and the box frame is provided with a first hole, the first hole is connected with the accommodating cavity and the avoidance cavity, and the pressure relief mechanism is arranged in the avoidance cavity and installed at the first hole.

[0007] According to the battery device provided by the present application, a relief cavity is provided on the side of the box frame away from the accommodating cavity, the relief cavity is provided with a relief notch for installing a pressure relief mechanism, and the box frame is also provided with a first hole connected to the accommodating cavity, and the pressure relief mechanism is installed in the relief cavity and blocked in the first hole, so that when the temperature or pressure inside the accommodating cavity reaches a preset threshold, the pressure relief mechanism can be actuated to release the pressure inside the accommodating cavity, thereby improving the stability and safety of the battery device. In addition, since the pressure relief mechanism is installed in the relief cavity, the occupation of the external space of the battery box by the pressure relief mechanism can be reduced, and the impact of the user interface outside the battery box can be reduced, which is convenient for the installation and use of external equipment, as well as the installation and removal of the battery box, thereby improving the user experience.

[0008] In addition, the battery device provided in this application may also have the following additional technical features:

[0009] In some embodiments of the present application, the box frame includes a frame, which is arranged around the periphery of the bottom plate and defines the accommodating cavity between the frame and the bottom plate, wherein the first hole is opened in the frame, and the avoidance cavity is provided on the side of the frame facing away from the accommodating cavity.

[0010] In the above technical solution, the frame is extended along the circumferential direction of the base plate, and defines a accommodating cavity for accommodating the battery cell between the frame and the base plate, wherein the frame is provided with a first hole connected to the accommodating cavity, and an avoidance cavity connected to the first hole is provided on the side of the frame away from the accommodating cavity. The pressure relief mechanism is installed in the avoidance cavity and blocks the first hole, thereby reducing the space occupied by the pressure relief mechanism outside the frame to reduce the impact on the user interface.

[0011] In some embodiments of the present application, the frame includes a first side beam, the first side beam includes a first plate body, a second plate body and a sealing member, the first plate body is located on a side of the second plate body close to the battery cell, and is parallel to and spaced apart from the second plate body, wherein the first plate body is provided with the first hole, the second plate body is provided with the avoidance gap, the sealing member is surrounded by the inner peripheral side of the avoidance gap, and defines the avoidance cavity between the first plate body and a side away from the battery cell, and the pressure relief mechanism is installed on the first plate body.

[0012] In the above technical scheme, the first side beam is a double-layer plate structure, the first plate and the second plate of the first side beam are parallel to each other and spaced apart, there is a gap between the first plate and the second plate, and the first plate is closer to the battery cell than the second plate. Then, a first hole is opened on the first plate, the pressure relief mechanism is installed on the first plate and blocks the first hole, an avoidance gap is opened on the second plate, a blocking member is arranged on the inner circumference of the avoidance gap, and extends in the direction of the first plate to connect with the side of the first plate facing the second plate, so that an avoidance cavity can be defined between the first plate, so that when the temperature or pressure inside the accommodating cavity reaches a preset threshold, the pressure relief mechanism is actuated to connect the first hole and the avoidance cavity, so that the pressure inside the accommodating cavity can enter the avoidance cavity through the first hole, and be discharged from the avoidance gap to the outside of the battery box.

[0013] In some embodiments of the present application, the blocking member includes a surrounding plate, and the surrounding plate is fixedly connected to the inner wall surface of the avoidance gap and a side of the first plate body facing away from the battery cell.

[0014] In the above technical solution, the enclosure is arranged around the inner wall surface of the avoidance gap to form a cavity with openings at both ends. By fixedly connecting one end of the enclosure to the side of the first plate body facing the second plate body, the other end can be arranged flush with the end surface where the avoidance gap is located, thereby defining an avoidance cavity for installing a pressure relief mechanism. The structure and principle are relatively simple and easy to implement.

[0015] In some embodiments of the present application, the frame includes a second side beam, and the surface of the second side beam on one side facing away from the accommodating cavity is partially recessed to form the avoidance cavity, and a blocking surface is formed at one end of the avoidance cavity facing away from the avoidance gap, the blocking surface is provided with the first hole, and the pressure relief mechanism is installed on the blocking surface.

[0016] In the above technical solution, the frame includes a single-layer second side beam, and the second side beam has a certain thickness. By arranging an avoidance cavity on the second side beam, the avoidance cavity is formed by a local depression from the side of the second side beam away from the accommodating cavity to the side close to the accommodating cavity, so that the bottom wall surface of the avoidance cavity is a sealed blocking surface, and an avoidance gap is formed on the other side of the corresponding blocking surface. By arranging a first hole on the bottom wall surface of the avoidance cavity, the pressure relief mechanism is installed on the bottom wall surface of the avoidance cavity and blocks the first hole, thereby reducing the occupation of the external space of the lower box body by the pressure relief mechanism and reducing the impact of the user on the external use interface of the battery box.

[0017] In some embodiments of the present application, the frame includes a frame body and a transfer beam, the frame body is arranged around the periphery of the base plate and defines the accommodating cavity between the frame body and the base plate, the transfer beam is arranged on the side of the frame body away from the accommodating cavity and defines an installation cavity between the frame body and the frame body, the installation cavity is used to install a high-voltage box, and the gas between the frame body and the accommodating cavity can flow mutually, wherein the transfer beam is provided with the avoidance cavity and the first hole.

[0018] In the above technical solution, the battery device usually also includes a high-voltage box, and the adapter beam is arranged on the outside of the frame body and defines an installation cavity between the adapter beam and the frame body to facilitate the installation of the high-voltage box. In addition, an avoidance cavity is arranged on the side of the adapter beam away from the installation cavity, and a first hole connected to the accommodating cavity and the installation cavity is opened on the bottom wall of the avoidance cavity. In this way, when the pressure relief mechanism is installed in the avoidance cavity and the first hole is blocked, it is also possible to reduce the occupation of the external space of the battery box by the pressure relief mechanism, thereby reducing the impact on the user interface.

[0019] In some embodiments of the present application, the transfer beam includes a transfer beam body and two end connecting beams connected to both ends of the transfer beam body, and the transfer beam body is connected to the frame body through the two end connecting beams, wherein the side of the end connecting beam facing away from the installation cavity is locally recessed to form the avoidance cavity, and the bottom wall surface of the avoidance cavity is provided with the first hole.

[0020] In the above technical solution, the end connecting beam has a certain thickness. The avoidance cavity is formed by partially recessing one side of the end connecting beam away from the installation cavity. The bottom wall surface of the avoidance cavity can form a sealing surface, and a first hole is opened on the bottom wall surface of the avoidance cavity. The pressure relief mechanism is installed on the bottom wall surface of the avoidance cavity formed by the end connecting beam, and the first hole is blocked, thereby reducing the occupation of the external space of the battery box by the pressure relief mechanism. The structure and principle are relatively simple and easy to implement.

[0021] In some embodiments of the present application, the end connecting beam includes a sheet metal part or a die-casting part; and / or the end connecting beam is welded to the transfer beam body and the frame body respectively.

[0022] In the above technical solution, the sheet metal parts or die-casting parts are easy to process and form the avoidance cavity and are suitable for mass production, which helps to improve production efficiency and reduce production costs.

[0023] The end connecting beam is connected to the transfer beam body and the frame body by welding, which helps to improve the reliability of the connection of the end connecting beam, thereby helping to improve the stability and reliability of the use of the pressure relief mechanism.

[0024] In some embodiments of the present application, the box frame further includes at least one partition, and the at least one partition is disposed in the accommodating cavity and divides the accommodating cavity into at least two accommodating spaces.

[0025] In the above technical solution, at least one partition is provided in the frame to divide the accommodating cavity into at least two accommodating spaces, each of which can be used to accommodate a battery cell, thereby facilitating regional management of the battery cell and further improving the stability of the battery device.

[0026] In a second aspect, the present application provides an electrical device, comprising a battery device as described in any one of the embodiments of the first aspect, wherein the battery device is used to supply power to the electrical device.

[0027] The electrical device provided in the present application includes the battery device described in any one of the embodiments of the first aspect, and thus has the technical effects of any of the above embodiments, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0030] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0031] Figure 3 A schematic structural diagram of a lower box body from one perspective provided in some embodiments of the present application;

[0032] Figure 4 for Figure 3 The enlarged structural diagram of the middle A part;

[0033] Figure 5 A schematic structural diagram of a lower box body from another perspective provided in some embodiments of the present application;

[0034] Figure 6 for Figure 5 A schematic diagram of a partial cross-sectional structure along the middle BB direction;

[0035] Figure 7 A schematic structural diagram of a lower box body from another perspective provided in some embodiments of the present application;

[0036] Figure 8 for Figure 7 The enlarged structural diagram of the middle C part;

[0037] Fig. 9 A schematic diagram of the exploded structure of the end connecting beam and the pressure relief mechanism provided in some embodiments of the present application.

[0038] The reference numerals are as follows:

[0039] 1000. Vehicles;

[0040] 100, battery device; 200, controller; 300, motor;

[0041] 10. Battery box; 11. Upper box body; 12. Lower box body; 20. Battery cell;

[0042] 121, bottom plate; 122, box frame; 123, accommodating chamber; 124, pressure relief mechanism;

[0043] 1221, frame; 1222, partition; 1223, transfer beam; 1224, communication port;

[0044] 12211. first plate body; 12212. second plate body; 12213. avoidance cavity; 12214. blocking member; 12215. first hole; 12231. transfer beam body; 12232. end connecting beam. 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] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0054] Among them, the battery device usually includes a battery box and a battery cell arranged in the battery box. The battery box is usually provided with a pressure relief mechanism, which is used to be actuated to release the internal pressure when the temperature or pressure inside the battery box reaches a preset threshold, so as to improve the safety of the battery device.

[0055] In the related art, the pressure relief mechanism is generally arranged on the outside of the battery box and protrudes outward from the battery box, occupying the external space of the battery box and affecting the user interface.

[0056] In order to solve the problem that the pressure relief mechanism of a battery device occupies the external space of a battery box, thus affecting the user interface, the present application designs a battery device, which includes a battery box, the battery box having a lower box body, the lower box body including a bottom plate and a box frame connected to the bottom plate, a accommodating cavity for accommodating a battery cell is defined between the box frame and the bottom plate, and an avoidance cavity is provided on the box frame of the battery device, the avoidance cavity has an avoidance notch, the avoidance cavity is located on the side of the box frame away from the accommodating cavity, and the box frame is provided with a first hole connected with the accommodating cavity and the avoidance cavity, the pressure relief mechanism is installed in the avoidance cavity, and the first hole is blocked, so that the pressure relief mechanism does not occupy the external space of the battery box, thereby helping to reduce the impact on the user interface outside the battery box.

[0057] The battery device disclosed in the embodiment of the present application can be used in, but not limited to, electric devices such as vehicles, ships or aircraft. A power supply system comprising the battery cells and battery devices disclosed in the present application can be used to form the electric device, which is beneficial to reduce the occupation of the external space of the battery box by the pressure relief mechanism in the battery device and helps to reduce the impact on the user interface.

[0058] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0059] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0060] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0061] Please refer to Figure 2 , Figure 2Schematic diagram of the exploded structure of a battery device 100 provided in some embodiments of the present application. The battery device (Battery Apparatus) mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel, or in mixed connection through a busbar component.

[0062] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20 .

[0063] As an example, the battery cell assembly may be a battery module (Battery Module), and the battery module is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0064] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells 20, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0065] See also Figures 3 to 6 , Figure 3 A schematic structural diagram of a lower box body from one perspective provided in some embodiments of the present application; Figure 4 for Figure 3 The enlarged structural diagram of the middle A part; Figure 5 A schematic structural diagram of a lower box body from another perspective provided in some embodiments of the present application;

[0066] Figure 6 for Figure 5 A schematic diagram of a partial cross-sectional structure along the BB direction. An embodiment of the present application provides a battery device, including: a battery box 10, a battery cell 20 and a pressure relief mechanism 124. The battery box 10 includes a bottom plate 121 and a box frame 122 arranged around the bottom plate 121, and a receiving cavity 123 is defined between the bottom plate 121 and the box frame 122; the battery cell 20 is accommodated in the receiving cavity 123; a side of the box frame 122 facing away from the receiving cavity 123 is provided with an avoidance cavity 12213, the avoidance cavity 12213 has an avoidance gap, and the box frame 122 is provided with a first hole 12215, the first hole 12215 is connected to the receiving cavity 123 and the avoidance cavity 12213, and the pressure relief mechanism 124 is arranged in the avoidance cavity 12213 and installed in the first hole 12215.

[0067] In the embodiment of the present application, the battery cell 20 may be a secondary battery. A secondary battery refers to a battery cell 20 that can be continuously used by activating active materials by charging after the battery cell 20 is discharged.

[0068] The battery cell 20 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0069] In some embodiments, the battery device may be a battery pack, which includes a battery box 10 and one or more battery cell 20 assemblies, wherein the battery cell 20 assemblies are accommodated in the battery box 10 .

[0070] As an example, the battery cell 20 assembly may be housed in the battery box 10 by fixing the battery module in the battery box 10 .

[0071] As an example, the battery cell 20 assembly may also be housed in the battery box 10 by directly fixing the plurality of battery cells 20 to the battery box 10 .

[0072] As an example, the battery box 10 may include an upper box body and a lower box body 12. The upper box body and the lower box body 12 are buckled together to form a closed space inside the battery box 10 to accommodate the battery cell 20 assembly. The closed here means covered or closed, which can be sealed or unsealed. The upper box body can be a top cover or a bottom plate 121.

[0073] As an example, the battery box 10 may include a top cover, a box frame 122 and a bottom plate 121. The top cover and the bottom plate 121 are respectively connected to the box frame 122, so that a closed space is formed inside the battery box 10 to accommodate the battery cell 20 assembly.

[0074] In some embodiments, the battery box 10 can be used as part of the chassis structure of the vehicle. For example, part of the battery box 10 can become at least a part of the floor 121 of the vehicle, or part of the battery box 10 can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0075] In the embodiment of the present application, the pressure relief mechanism 124 is used to discharge the internal gas of the battery box 10 .

[0076] As an example, when the internal pressure or temperature of the battery box 10 reaches a predetermined threshold, it is actuated to release the internal pressure or temperature. When the internal pressure or temperature of the battery box 10 reaches a predetermined threshold, the pressure relief mechanism 124 performs an action or a weak structure provided in the pressure relief mechanism 124 is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released. The threshold design varies according to different design requirements. The threshold may depend on one or more materials of the positive electrode sheet, negative electrode sheet, electrolyte and separator in the battery box 10.

[0077] The "actuation" mentioned in this application means that the pressure relief mechanism 124 is in action or activated to a certain state, so that the internal pressure and temperature of the battery cell 20 can be released. The action produced by the pressure relief mechanism 124 may include but is not limited to: the components in the pressure relief mechanism 124 move to form an exhaust channel, at least a part of the pressure relief mechanism 124 ruptures, breaks, is torn or opened, and so on. When the pressure relief mechanism 124 is actuated, the high-temperature and high-pressure substances inside the battery cell 20 will be discharged from the actuated part as emissions. In this way, the battery cell 20 can be depressurized and cooled under controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0078] In the embodiment of the present application, the pressure relief mechanism 124 is disposed in the avoidance cavity 12213 and may be partially located in the accommodation cavity 123 or completely located in the avoidance cavity 12213, that is, the outer end surface of the pressure relief mechanism 124 does not exceed the end surface where the avoidance notch is located. Preferably, the pressure relief mechanism 124 is completely located in the avoidance cavity 12213.

[0079] By setting a relief chamber 12213 on the side of the box frame 122 away from the accommodating chamber 123, the relief chamber 12213 is provided with a relief notch for installing the pressure relief mechanism 124, and the box frame 122 is also provided with a first hole 12215 connected to the accommodating chamber 123, the pressure relief mechanism 124 is installed in the relief chamber 12213 and blocked in the first hole 12215, so that when the temperature or pressure inside the accommodating chamber 123 reaches a preset threshold, the pressure relief mechanism 124 can be actuated to release the internal pressure of the accommodating chamber 123, thereby improving the stability and safety of the battery device. In addition, since the pressure relief mechanism 124 is installed in the relief chamber 12213, the occupation of the external space of the battery box 10 by the pressure relief mechanism 124 can be reduced, and the impact of the user interface outside the battery box 10 can be reduced, which is convenient for the installation and use of external equipment, and convenient for the installation and removal of the battery box 10, thereby improving the user experience.

[0080] See also Figure 3According to some embodiments of the present application, the box frame 122 includes a frame 1221, which is arranged around the bottom plate 121 and defines a accommodating cavity 123 between the frame 1221 and the bottom plate 121, wherein the frame 1221 is provided with a first hole 12215, and a side of the frame 1221 away from the accommodating cavity 123 is provided with an avoidance cavity 12213.

[0081] The frame 1221 is extended along the circumferential direction of the base plate 121, and defines a accommodating cavity 123 for accommodating the battery cell 20 between the frame 1221 and the base plate 121, wherein the frame 1221 is provided with a first hole 12215 connected to the accommodating cavity 123, and an avoidance cavity 12213 connected to the first hole 12215 is provided on the side of the frame 1221 away from the accommodating cavity 123, and the pressure relief mechanism 124 is installed in the avoidance cavity 12213 and blocks the first hole 12215, thereby reducing the space occupied by the pressure relief mechanism 124 outside the frame 1221 to reduce the impact on the user interface.

[0082] According to some embodiments of the present application, the lower box body 12 further includes a partition disposed in the frame 1221 , the partition being used to separate the accommodating cavity 123 into an exhaust channel, and the exhaust channel is respectively connected to the accommodating cavity 123 and the first hole 12215 .

[0083] See also Figure 5 and Figure 6 According to some embodiments of the present application, the frame 1221 includes a first side beam, the first side beam includes a first plate body 12211, a second plate body 12212 and a blocking member 12214, the first plate body 12211 is located on a side of the second plate body 12212 close to the battery cell 20, and is parallel to and spaced from the second plate body 12212, wherein the first plate body 12211 is provided with a first hole 12215, the second plate body 12212 is provided with an avoidance gap, the blocking member 12214 is surrounded by the inner peripheral side of the avoidance gap, and defines an avoidance cavity 12213 between the side of the first plate body 12211 facing away from the battery cell 20, and the pressure relief mechanism 124 is installed on the first plate body 12211.

[0084] It can be understood that the first side beam is a double-layer plate structure, and the first side beam can be any section structure in the frame 1221.

[0085] The first plate 12211 and the second plate 12212 of the first side beam are parallel to each other and spaced apart, there is a gap between the first plate 12211 and the second plate 12212, and the first plate 12211 is closer to the battery cell 20 than the second plate 12212. Then, by opening a first hole 12215 on the first plate 12211, the pressure relief mechanism 124 is installed on the first plate 12211 and blocks the first hole 12215, and an avoidance gap is opened on the second plate 12212, and the blocking member 12214 is surrounded by the inner periphery of the avoidance gap. side, and extends in the direction of the first plate body 12211 to be connected with the side of the first plate body 12211 facing the second plate body 12212, so that an avoidance cavity 12213 can be defined between the first plate body 12211, so that when the temperature or pressure inside the accommodating cavity 123 reaches a preset threshold, the pressure relief mechanism 124 is actuated to connect the first hole 12215 and the avoidance cavity 12213, so that the pressure inside the accommodating cavity 123 can enter the avoidance cavity 12213 through the first hole 12215, and be discharged from the avoidance gap to the outside of the battery box 10.

[0086] See also Figures 4 to 6 According to some embodiments of the present application, the blocking member 12214 includes a surrounding plate, which is fixedly connected to the inner wall surface of the avoidance gap and the side of the first plate body 12211 facing away from the battery cell 20.

[0087] Specifically, the enclosure plate is arranged around the inner wall surface of the avoidance gap to form a cavity with openings at both ends, and one end of the enclosure plate is fixedly connected to the side of the first plate body 12211 facing the second plate body 12212, and the other end can be arranged flush with the end surface where the avoidance gap is located, thereby defining an avoidance cavity 12213 for installing the pressure relief mechanism 124. The structure and principle are relatively simple and easy to implement.

[0088] According to some embodiments of the present application, the frame 1221 includes a second side beam, and the surface of the second side beam on one side away from the accommodating cavity 123 is partially recessed to form an avoidance cavity 12213, and a blocking surface is formed at one end of the avoidance cavity 12213 away from the avoidance notch, and the blocking surface is provided with a first hole 12215, and the pressure relief mechanism 124 is installed on the blocking surface.

[0089] In the embodiment of the present application, the second side beam is a single-layer plate structure with a certain thickness. Specifically, the thickness of the second side beam is greater than the thickness of the pressure relief mechanism 124 along the direction from the accommodating cavity 123 to the frame 1221.

[0090] An avoidance cavity 12213 is formed by partially recessing one side of the second side beam away from the accommodating cavity 123 toward the accommodating cavity 123, so that the bottom wall surface of the avoidance cavity 12213 is a sealed blocking surface, and an avoidance gap is formed on the other side of the corresponding blocking surface, and by setting a first hole 12215 on the bottom wall surface of the avoidance cavity 12213, the pressure relief mechanism 124 is installed on the bottom wall surface of the avoidance cavity 12213 and blocks the first hole 12215, thereby reducing the occupation of the external space of the lower box body 12 by the pressure relief mechanism 124 and reducing the impact of the user on the external use interface of the battery box 10.

[0091] See also Figure 7 , Figure 7 A schematic diagram of the structure of the lower box from another perspective provided for some embodiments of the present application. According to some embodiments of the present application, the frame 1221 includes a frame body and a transfer beam 1223, the frame body is arranged around the periphery of the bottom plate 121, and defines a receiving cavity 123 between the frame body and the bottom plate 121, the transfer beam 1223 is arranged on a side of the frame body away from the receiving cavity 123, and defines an installation cavity between the frame body and the frame body, the installation cavity is used to install the high-pressure box, and the gas between the receiving cavity 123 can circulate mutually, wherein the transfer beam 1223 is provided with an avoidance cavity 12213 and a first hole 12215.

[0092] Exemplarily, the mounting cavity is rectangular or trapezoidal.

[0093] Exemplarily, the frame body is provided with a communication opening 1224 , and the communication opening 1224 is used to connect the installation cavity and the accommodating cavity 123 .

[0094] The high-voltage box is used to distribute the high-voltage electricity of the battery device to various high-voltage electrical equipment and to safely manage the high-voltage circuit.

[0095] The adapter beam 1223 is arranged on the outside of the frame body and defines an installation cavity between the frame body, so that the space in the accommodating cavity 123 is not occupied, and the high-voltage box is easily installed. In addition, a avoidance cavity 12213 is arranged on the side of the adapter beam 1223 away from the installation cavity, and a first hole 12215 connected to the accommodating cavity 123 and the installation cavity is opened on the bottom wall of the avoidance cavity 12213. In this way, when the pressure relief mechanism 124 is installed in the avoidance cavity 12213 and the first hole 12215 is blocked, it is also possible to reduce the occupation of the external space of the battery box 10 by the pressure relief mechanism 124, thereby reducing the impact on the user interface.

[0096] See also Figures 7 to 9 , Figure 8 for Figure 7 The enlarged structural diagram of the middle C part; Fig. 9Schematic diagram of the decomposed structure of the end connecting beam and the pressure relief mechanism provided for some embodiments of the present application. According to some embodiments of the present application, the transfer beam 1223 includes a transfer beam body 12231 and two end connecting beams 12232 connected to both ends of the transfer beam body 12231, and the transfer beam body 12231 is connected to the frame body through the two end connecting beams 12232, wherein the side of the end connecting beam 12232 away from the installation cavity is partially recessed to form an avoidance cavity 12213, and the bottom wall surface of the avoidance cavity 12213 is provided with a first hole 12215.

[0097] Exemplarily, the two end connecting beams 12232 are arranged obliquely to the adapter beam body 12231. Thus, when the installation cavity meets the installation space of the high-voltage box, it helps to reduce the distance between the adapter beam 1223 and the frame body to further save space.

[0098] The end connecting beam 12232 has a certain thickness. The avoidance cavity 12213 is formed by partially recessing the side of the end connecting beam 12232 away from the installation cavity. The bottom wall surface of the avoidance cavity 12213 can form a sealing surface, and the bottom wall surface of the avoidance cavity 12213 is provided with a first hole 12215. The pressure relief mechanism 124 is installed on the bottom wall surface of the avoidance cavity 12213 formed by the end connecting beam 12232, and the first hole 12215 is blocked, thereby reducing the occupation of the external space of the battery box 10 by the pressure relief mechanism 124. The structure and principle are relatively simple and easy to implement.

[0099] According to some embodiments of the present application, the end connecting beam 12232 includes a sheet metal part or a die-casting part; the end connecting beam 12232 is welded to the transfer beam body 12231 and the frame body respectively.

[0100] Sheet metal parts or die-casting parts are easy to process and form the avoidance cavity 12213, and are suitable for mass production, which helps to improve production efficiency and reduce production costs.

[0101] The end connecting beam 12232 is connected to the adapter beam body 12231 and the frame body by welding, which helps to improve the reliability of the connection of the end connecting beam 12232, thereby helping to improve the stability and reliability of the use of the pressure relief mechanism 124.

[0102] See also Figure 3 and Figure 7 According to some embodiments of the present application, the box frame 122 further includes at least one partition 1222. The at least one partition 1222 is disposed in the accommodating cavity 123 and divides the accommodating cavity 123 into at least two accommodating spaces.

[0103] Exemplarily, the partition 1222 includes at least one transverse support beam and at least one longitudinal support beam, the transverse support beam extends along the first direction of the lower box body 12 and is fixedly connected to the frame 1221. The longitudinal support beam extends along the second direction of the lower box body 12 and is fixedly connected to the transverse support beam and the frame 1221, and the first direction is arranged to intersect with the second direction. The gas between at least two accommodating spaces can circulate with each other, so that each accommodating space can complete pressure relief protection through the pressure relief mechanism.

[0104] At least one partition 1222 is provided in the frame 1221 to divide the accommodating cavity 123 into at least two accommodating spaces. Each accommodating space can be used to accommodate a battery cell 20, thereby facilitating regional management of the battery cell 20 and further improving the stability of the battery device.

[0105] According to some embodiments of the present application, see Figures 2 to 6 The present application provides a battery device, including a battery box 10, a battery cell 20 and a pressure relief mechanism 124. The battery box 10 includes a bottom plate 121 and a box frame 122 arranged around the bottom plate 121, and a accommodating cavity 123 is defined between the bottom plate 121 and the box frame 122; the battery cell 20 is accommodated in the accommodating cavity 123; the box frame 122 includes a frame 1221 and at least one partition 1222 arranged in the frame 1221, and the at least one partition 1222 divides the accommodating cavity 123 into at least two accommodating spaces, each of which is used to accommodate the battery cell 20, and an avoidance cavity 12213 is provided on the side of the frame 1221 away from the accommodating cavity 123, and the avoidance cavity 12213 has an avoidance gap, and the box frame 122 is provided with a first hole 12215, and the first hole 12215 is connected with the accommodating cavity 123 and the avoidance cavity 12213, and the pressure relief mechanism 124 is arranged in the avoidance cavity 12213 and blocks the first hole 12215. Through the technical solution of the present application, the occupation of the external space of the battery box 10 by the pressure relief mechanism 124 can be reduced, thereby helping to reduce the impact on the user interface.

[0106] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A battery device, characterized in that: include: A battery box, comprising a lower box body, wherein the lower box body comprises a bottom plate and a box body frame connected to the bottom plate, and an accommodating cavity is defined between the bottom plate and the box body frame; A battery cell is accommodated in the accommodation cavity; A pressure relief mechanism, wherein a side of the box frame facing away from the accommodating chamber is provided with an avoidance chamber, the avoidance chamber has an avoidance gap, and the box frame is provided with a first hole, the first hole is connected with the accommodating chamber and the avoidance chamber, the pressure relief mechanism is arranged in the avoidance chamber and installed on the first hole.

2. The battery device according to claim 1, characterized in that: The box frame includes a frame, which is arranged around the bottom plate and defines the accommodating cavity between the frame and the bottom plate, wherein the frame is provided with the first hole, and the avoidance cavity is provided on a side of the frame away from the accommodating cavity.

3. The battery device according to claim 2, characterized in that: The frame includes a first side beam, the first side beam includes a first plate, a second plate and a blocking member, the first plate is parallel to and spaced from the second plate, and is located on a side of the second plate close to the battery cell. The first plate is provided with the first hole, the second plate is provided with the avoidance gap, the blocking member is arranged around the inner circumference of the avoidance gap and defines the avoidance cavity between the first plate and the side away from the battery cell, and the pressure relief mechanism is installed on the first plate.

4. The battery device according to claim 3, characterized in that: The blocking member includes a surrounding plate, and the surrounding plate is fixedly connected to the inner wall surface of the avoidance gap and a side of the first plate body facing away from the battery cell.

5. The battery device according to claim 2, characterized in that: The frame includes a second side beam, a surface of the second side beam on one side away from the accommodating cavity is partially recessed to form the avoidance cavity, a blocking surface is formed at one end of the avoidance cavity away from the avoidance gap, the blocking surface is provided with the first hole, and the pressure relief mechanism is installed on the blocking surface.

6. The battery device according to claim 2, characterized in that: The frame includes a frame body and a transfer beam. The frame body is arranged around the periphery of the bottom plate and defines the accommodating cavity with the bottom plate. The transfer beam is arranged on a side of the frame body away from the accommodating cavity and defines an installation cavity with the frame body. The installation cavity is used to install the high-voltage box, and the gas between the installation cavity and the accommodating cavity can flow mutually. Wherein, the transfer beam is provided with the avoidance cavity and the first hole.

7. The battery device according to claim 6, characterized in that: The transfer beam comprises a transfer beam body and two end connecting beams connected to both ends of the transfer beam body, and the transfer beam body is connected to the frame body through the two end connecting beams. Wherein, a side of the end connecting beam facing away from the installation cavity is partially recessed to form the avoidance cavity, and the first hole is formed on the bottom wall surface of the avoidance cavity.

8. The battery device according to claim 7, characterized in that: The end connecting beam comprises a sheet metal part or a die casting part; And / or, the end connecting beams are respectively welded to the adapter beam body and the frame body.

9. The battery device according to any one of claims 2 to 8, characterized in that: The box frame further comprises at least one partition, which is arranged in the accommodating cavity and divides the accommodating cavity into at least two accommodating spaces.

10. An electrical device, characterized in that: It comprises a battery device as described in any one of claims 1 to 9, wherein the battery device is used to supply power to the electrical device.

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