Battery and electric device

Abstract

The utility model relates to a battery and a power utilization device, the battery comprises a box body, and the box body comprises a box body with an accommodating cavity; the partition piece is arranged in the containing cavity and divides the containing cavity into a first sub-cavity and a second sub-cavity, the first sub-cavity is a sealed cavity, at least part of the cavity wall of the second sub-cavity is provided with ventilation holes in a penetrating mode, and the second sub-cavity is communicated with the external environment through the ventilation holes. The accommodating cavity is divided into the first sub-cavity and the second sub-cavity which are independent from each other through the separator, when the battery monomer is placed in the accommodating cavity, one end, provided with the electrode terminal, of the battery monomer can be accommodated in the first sub-cavity and realizes circuit connection, and the other end, deviating from the electrode terminal, of the battery monomer can be accommodated in the second sub-cavity; ventilation and heat dissipation are realized through the ventilation holes; in addition, the arrangement of the vent holes can also realize weight reduction, and the vent holes are utilized to replace the current cooling structure, so that the overall weight of the box body is effectively reduced.

Description

Technical Field

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

[0002] In the battery structure, the box provides installation and accommodation space for the battery cells, which can protect the battery cells. The battery cells generate heat during circulation, so it is necessary to install cooling and heat insulation structures such as liquid cooling plates and heat insulation pads in the box to achieve heat dissipation inside the box.

[0003] However, the provision of the cooling and heat-insulating structure results in a larger overall weight of the box and occupies the internal space of the box. In addition, the heat dissipation reliability of the current cooling and heat-insulating structure is low, resulting in a poor overall heat dissipation effect of the box. Utility Model Content

[0004] Based on this, it is necessary to provide a battery and an electrical device to address the problems of heavy weight and low heat dissipation reliability of the current box.

[0005] In the first aspect, the present application provides a battery, including a box body, the box body including a box body and a partition, the box body having a accommodating cavity, the partition being arranged in the accommodating cavity and dividing the accommodating cavity into a first sub-cavity and a second sub-cavity, the first sub-cavity being a sealed cavity, at least part of the cavity wall of the second sub-cavity being penetrated by a ventilation hole, and the second sub-cavity being connected to the external environment through the ventilation hole.

[0006] The storage chamber is divided into a first sub-chamber and a second sub-chamber which are independent of each other by a separator. When the battery cell is placed in the storage chamber, one end of the battery cell with the electrode terminal can be placed in the first sub-chamber to realize circuit connection in the first sub-chamber, and the other end of the battery cell away from the electrode terminal can be placed in the second sub-chamber. Ventilation and heat dissipation in the second sub-chamber are realized through ventilation holes, and heat exchange is carried out with the help of air from the external environment and the battery cell, thereby improving the heat dissipation effect of the battery cell. In addition, the setting of ventilation holes can also achieve weight reduction, and the use of ventilation holes to replace the current cooling structure can effectively reduce the overall weight of the box.

[0007] In some embodiments, the box body includes a base and a cover that are mutually enclosed to form a accommodating cavity, the partition is sealed between the base and the cover, and the first sub-cavity is located between the partition and the cover, and the second sub-cavity is located between the partition and the base.

[0008] Through the above structure, the partition, the base and the cover plate are respectively enclosed to form a first sub-cavity and a second sub-cavity. When the battery cell is placed inside the box, the bottom of the battery cell can be supported on the bottom wall of the base and accommodated in the second sub-cavity, and the top of the battery cell with the electrode terminal passes through the partition and is accommodated in the first sub-cavity, so that the electrode terminal of the battery cell can smoothly realize circuit connection in the first sub-cavity, and the battery cell in the second sub-cavity can realize ventilation and heat dissipation through the ventilation holes.

[0009] In some embodiments, the ventilation holes are at least formed on two side walls of the base, and the ventilation holes include a plurality of ventilation holes, each of which is evenly distributed in a matrix on the corresponding side walls.

[0010] Through the above structure, the ventilation and heat dissipation efficiency of the box can be improved, and the weight of the box can be further reduced.

[0011] In some embodiments, a limiting groove is provided on the separator, and the limiting groove is used to accommodate the battery cell and limit the battery cell in a direction parallel to the separator.

[0012] Therefore, the battery cell can be limited by the limiting groove on the separator, so that the battery cell can be more stably accommodated in the accommodating cavity.

[0013] In some embodiments, a plurality of limiting grooves are provided on the separator, and each adjacent limiting groove is spaced apart, and each limiting groove is provided in one-to-one correspondence with a battery cell.

[0014] Through the above structure, the separator can not only limit the position of the battery cell, but also achieve the heat insulation effect between two adjacent battery cells, and can replace the heat insulation pad, further reducing the overall weight of the box.

[0015] In some embodiments, the separator is an insulating separator. Thus, the separator can effectively separate and insulate the battery cells, so that the circuit connection between the battery cells is more stable and the influence of external factors on the battery cells is reduced.

[0016] In some embodiments, the battery further includes a battery cell, and the battery cell is disposed in the receiving cavity.

[0017] In some embodiments, one end of the battery cell provided with an electrode terminal is located in the first sub-cavity, and the other end of the battery cell facing away from the electrode terminal is located in the second sub-cavity.

[0018] Through the above structure, the electrode terminals of the battery cell can be connected in the first sub-cavity in a sealed environment, reducing the impact of external factors on the circuit connection. At the same time, the part of the battery cell located in the second sub-cavity can be ventilated and dissipated through the ventilation holes, improving the heat dissipation efficiency.

[0019] In some embodiments, in a height direction of the battery cell, a height of the battery cell in the first subcavity is smaller than a height of the battery cell in the second subcavity.

[0020] Therefore, the height of the battery cell in the first sub-cavity is smaller than the height of the battery cell in the second sub-cavity, so that the area of ​​the battery cell in the second sub-cavity is larger, thereby increasing the heat exchange area between the battery cell and the external air, and improving the heat dissipation efficiency.

[0021] In a third aspect, the present application also provides an electrical device, comprising the battery as described above.

[0022] The above-mentioned battery and electrical device divides the accommodating chamber inside the box body into a first sub-chamber and a second sub-chamber that are independent of each other through a partition, wherein the first sub-chamber is a sealed chamber, and the second sub-chamber is connected to the external environment through a ventilation hole; therefore, when the battery cell is placed in the accommodating chamber, one end of the battery cell with an electrode terminal can be accommodated in the first sub-chamber, and a circuit connection is achieved in the first sub-chamber, and the other end of the battery cell away from the electrode terminal can be accommodated in the second sub-chamber, and ventilation and heat dissipation in the second sub-chamber are achieved through the ventilation holes, and heat exchange is carried out with the help of air from the external environment and the battery cell, thereby improving the heat dissipation effect of the battery cell; in addition, the provision of the ventilation holes can also achieve weight reduction, and the ventilation holes are used to replace the current cooling structure, effectively reducing the overall weight of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the structure of a vehicle according to one or more embodiments.

[0024] Figure 2 is a schematic diagram of an exploded structure of a battery according to one or more embodiments.

[0025] Figure 3 is a schematic diagram of an exploded structure of a battery cell according to one or more embodiments.

[0026] Figure 4 It is a schematic diagram of the structure of a box according to one or more embodiments.

[0027] Figure 5 It is a schematic diagram of the exploded structure of a box according to one or more embodiments.

[0028] Figure 6 It is a schematic diagram of the structure of a base in a box according to one or more embodiments.

[0029] Figure 7 It is a schematic diagram of the structure of a partition in a box according to one or more embodiments.

[0030] Explanation of the accompanying drawings: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, casing; 20, battery cell; 11, first part; 12, second part; 13, casing body; 14, partition; 15, accommodating cavity; 16, ventilation hole; 21, end cover; 22, shell; 23, electrode assembly; 24, electrode terminal; 131, base; 132, cover plate; 141, limiting groove; 151, first sub-cavity; 152, second sub-cavity; a, height direction. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if the 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries 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 and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0038] The battery includes a box and a battery cell. The battery cell is contained in the box, which provides a space for the battery cell and protects the battery cell. The battery cell generates heat during the cycle, so a cooling and heat dissipation structure needs to be set in the box. For example, a liquid cooling plate is set at the bottom of the box. The cooling medium inside the liquid cooling plate can exchange heat with the battery cell during the circulation process to achieve heat dissipation of the battery cell; or a heat insulation pad is set between adjacent battery cells. The heat insulation pad can play a good heat insulation effect between adjacent battery cells and reduce the probability of heat transfer between battery cells.

[0039] However, the above-mentioned cooling and heat dissipation structure will occupy the installation space inside the box and increase the overall weight of the box. On the other hand, the installation position of the cooling and heat dissipation structure is limited, resulting in a limited heat dissipation range, which affects the heat dissipation reliability.

[0040] Based on the above considerations, in order to solve the problem of heavy weight and low heat dissipation reliability of the current box, a box is proposed in one or more embodiments of the present application, in which the accommodating chamber inside the box body is divided into a first sub-chamber and a second sub-chamber that are independent of each other by a partition, wherein the first sub-chamber is a sealed chamber, and the second sub-chamber is connected to the external environment through a ventilation hole. Thus, when the battery cell is placed in the accommodating chamber, one end of the battery cell with an electrode terminal can be accommodated in the first sub-chamber, and the circuit connection is realized in the first sub-chamber, and the other end of the battery cell away from the electrode terminal can be accommodated in the second sub-chamber, and ventilation and heat dissipation in the second sub-chamber are realized through the ventilation hole, and heat exchange is carried out with the help of air from the external environment and the battery cell, thereby improving the heat dissipation effect of the battery cell. In addition, the provision of ventilation holes can also achieve weight reduction, and the use of ventilation holes to replace the current cooling structure can effectively reduce the overall weight of the box.

[0041] The battery cells disclosed in the embodiments of the present application can be used in, but are not limited to, electrical devices such as vehicles, ships, or aircraft.

[0042] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0043] 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.

[0044] Please refer to Figure 1The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0045] In some embodiments of the present application, the battery 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.

[0046] Please refer to Figure 2 The battery 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is accommodated in the box body 10. The box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include a first part 11 and a second part 12, and the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20. The second part 12 may be a hollow structure with one end open, and the first part 11 may be a plate-like structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 may also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box body 10 formed by the first part 11 and the second part 12 can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0047] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0048] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0049] Please refer to Figure 3 The battery cell 20 refers to the smallest unit that constitutes the battery. Figure 3 The battery cell 20 includes an end cover 21, a shell 22, an electrode assembly 23 and other functional components.

[0050] The end cap 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the shell 22 to match the shell 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 21 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals can be provided on the end cap 21. The electrode terminal can be used to electrically connect to the electrode assembly 23 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 21 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 21, and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0051] The shell 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, the electrolyte and other components. The shell 22 and the end cap 21 can be independent components, and an opening can be set on the shell 22, and the internal environment of the battery cell 20 is formed by covering the opening with the end cap 21 at the opening. Without limitation, the end cap 21 and the shell 22 can also be integrated. Specifically, the end cap 21 and the shell 22 can form a common connection surface before other components are put into the shell, and when the interior of the shell 22 needs to be encapsulated, the end cap 21 covers the shell 22. The shell 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the shell 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0052] The electrode assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 23 may be included in the housing 22. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a lug. The positive and negative electrode lugs may be located together at one end of the main body or at both ends of the main body, respectively. During the charge and discharge process of the battery, the positive and negative electrode active materials react with the electrolyte, and the lugs connect the electrode terminals to form a current loop.

[0053] See also Figure 4 and Figure 5 An embodiment of the present application provides a battery 100, including a box 10, the box 10 including a box body 13 and a partition 14, the box body 13 having a receiving cavity 15, the partition 14 is disposed in the receiving cavity 15, and divides the receiving cavity 15 into a first sub-cavity 151 and a second sub-cavity 152. The first sub-cavity 151 is a sealed cavity, at least part of the cavity wall of the second sub-cavity 152 is penetrated by a ventilation hole 16, and the second sub-cavity 152 is connected to the external environment through the ventilation hole 16.

[0054] It should be noted that the box body 10 is used to accommodate the battery cell 20. Specifically, the battery cell 20 is placed in the accommodating cavity 15 of the box body 13, and the box body 13 can accommodate and protect the battery cell 20. The battery cell 20 can be a square battery cell, a cylindrical battery cell, or a battery cell of other shapes.

[0055] The partition 14 is a component disposed in the accommodating chamber 15 and capable of partitioning the accommodating chamber 15. Specifically, the partition 14 can be configured as a partition plate, and the partition plate is disposed in the accommodating chamber 15, and the accommodating chamber 15 is partitioned into a first sub-chamber 151 and a second sub-chamber 152 that are independent of each other.

[0056] The first sub-cavity 151 is a sealed cavity, that is, the interior of the first sub-cavity 151 is isolated from the external environment. When the battery cell 20 is placed inside the box 10, one end of the battery cell 20 with the electrode terminal 24 is placed in the first sub-cavity 151, and the electrode terminals 24 of each battery cell 20 can be connected in the first sub-cavity 151, thereby improving the stability of the circuit connection between each battery cell 20.

[0057] Furthermore, the other end of the battery cell 20 away from the electrode terminal 24 is accommodated in the second sub-cavity 152, and a ventilation hole 16 is opened through at least part of the cavity wall of the second sub-cavity 152. The ventilation hole 16 connects the interior of the second sub-cavity 152 with the external environment, so that the battery cell 20 can be ventilated and heat-dissipated in the second sub-cavity 152.

[0058] Specifically, when the box 10 containing the battery cell 20 is installed in an electric device such as a car, air circulation can be achieved through the driving of the car. As a result, the air from the external environment and the air inside the second sub-cavity 152 are circulated and exchanged through the ventilation holes 16. After the air from the external environment enters the second sub-cavity 152, it exchanges heat with the battery cell 20 in the second sub-cavity 152, thereby achieving the effect of ventilation and heat dissipation.

[0059] At the same time, due to the opening of the ventilation holes 16, on the basis of achieving ventilation and heat dissipation, the weight of the box 10 can also be reduced. In addition, the overall weight of the box 10 can be further reduced by using the ventilation holes 16 to replace the cooling or heat dissipation structure.

[0060] It can be understood that the ventilation hole 16 can be provided in plurality, and the ventilation hole 16 can be provided as, but not limited to, a circular hole, a square hole, a waist-shaped hole, a polygonal hole or a through-hole structure of other shapes.

[0061] Thus, the accommodating chamber 15 is divided into a first sub-chamber 151 and a second sub-chamber 152 which are independent of each other by the partition 14. When the battery cell 20 is placed in the accommodating chamber 15, one end of the battery cell 20 provided with the electrode terminal 24 can be accommodated in the first sub-chamber 151, and the circuit connection is realized in the first sub-chamber 151. The other end of the battery cell 20 away from the electrode terminal 24 can be accommodated in the second sub-chamber 152, and ventilation and heat dissipation in the second sub-chamber 152 are realized through the ventilation holes 16, and heat exchange is performed with the help of air from the external environment and the battery cell 20, thereby improving the heat dissipation effect of the battery cell 20. In addition, the provision of the ventilation holes 16 can also achieve weight reduction, and the ventilation holes 16 are used to replace the current cooling structure, effectively reducing the overall weight of the box body 10.

[0062] In some embodiments, the box body 13 includes a base 131 and a cover 132 that are mutually enclosed to form a accommodating cavity 15, the partition 14 is sealed between the base 131 and the cover 132, and the first sub-cavity 151 is located between the partition 14 and the cover 132, and the second sub-cavity 152 is located between the partition 14 and the base 131.

[0063] Specifically, the base 131 has a receiving space inside, and the base 131 has an opening. The cover plate 132 is disposed on the opening, so as to enclose the receiving cavity 15 together with the base 131 .

[0064] The partition 14 is sealed between the base 131 and the cover 132, wherein a sealing strip can be set between the partition 14 and the base 131 and the cover 132 to achieve the sealing between the partition 14 and the base 131 and the cover 132, or a sealant can be filled in the gap between the partition 14 and the base 131 and the cover 132 to achieve the sealing between the partition 14 and the base 131 and the cover 132.

[0065] When the partition 14 is sealed between the base 131 and the cover 132, the partition 14 and the cover 132 enclose a first sub-cavity 151 of a sealed structure, and the partition 14 and the base 131 enclose a second sub-cavity 152. A ventilation hole 16 is provided on the base 131 to connect the second sub-cavity 152 with the external environment to achieve ventilation and heat dissipation.

[0066] Through the above structure, the partition 14 and the base 131 and the cover plate 132 respectively enclose a first sub-cavity 151 and a second sub-cavity 152. When the battery cell 20 is placed inside the box body 10, the bottom of the battery cell 20 can be supported on the bottom wall of the base 131 and accommodated in the second sub-cavity 152, and the top of the battery cell 20 with the electrode terminal 24 passes through the partition 14 and is accommodated in the first sub-cavity 151, so that the electrode terminal 24 of the battery cell 20 can smoothly realize circuit connection in the first sub-cavity 151, and the battery cell 20 in the second sub-cavity 152 can realize ventilation and heat dissipation through the ventilation hole 16.

[0067] Please also see Figure 5 and Figure 6 In some embodiments, the ventilation holes 16 are at least formed on two side walls of the base 131 , and the ventilation holes 16 include a plurality of ventilation holes 16 , each of which is evenly distributed in a matrix on the corresponding side walls.

[0068] Specifically, the base 131 has a bottom wall and side walls, wherein the bottom wall is disposed toward the opening and faces the cover plate 132 , and the side walls are disposed around the bottom wall and are perpendicular to the bottom wall.

[0069] The ventilation holes 16 can be provided on two side walls or all side walls of the base 131. When the ventilation holes 16 are provided on two side walls, the two side walls can be arranged adjacently or oppositely. Furthermore, the ventilation holes 16 are provided on all side walls of the base 131 to improve the ventilation and heat dissipation efficiency.

[0070] Furthermore, the ventilation holes 16 may also be opened on the bottom wall of the base 131, which can not only further reduce the weight of the box body 10, but also increase the ventilation and heat dissipation area.

[0071] Therefore, through the above structure, the ventilation and heat dissipation efficiency of the box body 10 can be improved, and the weight of the box body 10 can be further reduced.

[0072] Please also see Figure 5 and Figure 7 In some embodiments, a limiting groove 141 is provided on the separator 14 , and the limiting groove 141 is used to accommodate the battery cell 20 and limit the battery cell 20 along a direction parallel to the separator 14 .

[0073] Specifically, the shape of the limiting groove 141 matches the shape of the battery cell 20 , so that the battery cell 20 can be stably inserted into the limiting groove 141 , thereby achieving positioning of the battery cell 20 through the limiting groove 141 .

[0074] When the battery cell 20 is a square battery cell 20 , the limiting groove 141 is set to be square, and when the battery cell 20 is a cylindrical battery cell 20 , the limiting groove 141 is set to be circular.

[0075] Therefore, the battery cell 20 can be limited by the limiting groove 141 on the separator 14 , so that the battery cell 20 can be more stably accommodated in the accommodating cavity 15 .

[0076] In some embodiments, a plurality of limiting grooves 141 are disposed on the separator 14 , and each adjacent limiting groove 141 is spaced apart from each other, and each limiting groove 141 is disposed in one-to-one correspondence with a battery cell 20 .

[0077] Specifically, each battery cell 20 is inserted into a corresponding limiting groove 141, so that the positioning of the battery cell 20 is achieved through the limiting groove 141. In addition, each adjacent limiting groove 141 is arranged at intervals, that is, there is a separation rib between each adjacent limiting groove 141. When the battery cell 20 is inserted into the corresponding limiting groove 141, the separation rib can separate the two adjacent battery cells 20, so that there is a certain distance between the two adjacent battery cells 20, thereby achieving heat insulation between the two adjacent battery cells 20.

[0078] Therefore, through the above structure, the separator 14 can not only limit the battery cells 20 , but also achieve the heat insulation between two adjacent battery cells 20 , and can replace the heat insulation pad, further reducing the overall weight of the box 10 .

[0079] In some embodiments, the separator 14 is an insulating separator, so that the separator 14 can effectively separate and insulate the battery cells 20 , so as to make the circuit connection between the battery cells 20 more stable and reduce the influence of external factors on the battery cells 20 .

[0080] In some embodiments, the battery 100 further includes a battery cell 20 , which is disposed in the receiving cavity 15 .

[0081] Specifically, the separator 14 is sealed between the base 131 and the cover plate 132, and the battery cells 20 are inserted one by one into the limiting grooves 141 on the separator 14. The gap between the battery cells 20 and the groove wall of the limiting groove 141 can be sealed by a sealing strip or a sealant.

[0082] Therefore, the partition 14 can not only realize the positioning of the battery cell 20 in the box body 10, but also insulate two adjacent battery cells 20, and smoothly divide the accommodating cavity 15 into a sealed first sub-cavity 151 and an open second sub-cavity 152. The second sub-cavity 152 realizes ventilation and heat dissipation through the ventilation hole 16, thereby reducing the overall weight of the box body 10.

[0083] In some embodiments, one end of the battery cell 20 provided with the electrode terminal 24 is located in the first sub-cavity 151 , and the other end of the battery cell 20 facing away from the electrode terminal 24 is located in the second sub-cavity 152 .

[0084] Specifically, the battery cell 20 is inserted into the limiting groove 141 on the separator 14 along its own height direction a, the electrode terminal 24 on the battery cell 20 is arranged toward the cover plate 132, and the bottom of the battery cell 20 is supported on the bottom wall of the base 131. Thus, the battery cell 20 passes through the separator 14 and is divided into an upper half and a lower half by the separator 14. The upper half is one end with the electrode terminal 24 and is accommodated in the first sub-cavity 151. Since the first sub-cavity 151 is a sealed cavity, the electrode terminal 24 can be connected to the circuit in a sealed environment, reducing the influence of external factors on the circuit connection.

[0085] The lower half of the battery cell 20 is accommodated in the second sub-cavity 152 . With the help of the ventilation holes 16 , air from the external environment enters the second sub-cavity 152 for heat exchange, thereby dissipating heat for the battery cell 20 .

[0086] Through the above structure, the electrode terminal 24 of the battery cell 20 can be connected to the circuit in the first sub-cavity 151 in a sealed environment, reducing the influence of external factors on the circuit connection. At the same time, the part of the battery cell 20 located in the second sub-cavity 152 can be ventilated and dissipated under the action of the ventilation hole 16, thereby improving the heat dissipation efficiency.

[0087] In some embodiments, in the height direction a of the battery cell 20 , the height of the battery cell 20 in the first sub-cavity 151 is smaller than the height of the battery cell 20 in the second sub-cavity 152 .

[0088] Specifically, the battery cell 20 is inserted into the corresponding limit groove 141 along its own height direction a, so that the separator 14 divides the battery cell 20 into an upper half and a lower half, the upper half is a part located in the first sub-cavity 151, and the lower half is a part located in the second sub-cavity 152.

[0089] The upper half is one end of the battery cell 20 with the electrode terminal 24 , and the electrode terminal 24 realizes circuit connection in the first sub-cavity 151 , while the lower half can exchange heat with the external air in the second sub-cavity 152 .

[0090] Therefore, the height of the battery cell 20 in the first sub-cavity 151 is less than the height of the battery cell 20 in the second sub-cavity 152, so that the area of ​​the battery cell 20 in the second sub-cavity 152 is larger, thereby increasing the heat exchange area between the battery cell 20 and the external air, and improving the heat dissipation efficiency.

[0091] Based on the same concept as the above-mentioned battery 100 , the present application also provides an electrical device, including the above-mentioned battery 100 .

[0092] According to one or more embodiments, when the battery cells 20 are placed in the accommodating cavity 15, each battery cell 20 is inserted into a corresponding limiting groove 141, and the limiting groove 141 can realize the positioning of the battery cell 20. At the same time, the limiting grooves 141 are arranged at intervals, so that there is a certain distance between two adjacent battery cells 20, which can realize heat insulation between the two adjacent battery cells 20.

[0093] Furthermore, the separator 14 divides the accommodating chamber 15 into a first sub-chamber 151 and a second sub-chamber 152. The first sub-chamber 151 is a sealed chamber, and one end of the battery cell 20 provided with the electrode terminal 24 is located in the first sub-chamber 151. The electrode terminal 24 is connected to the circuit in the first sub-chamber 151. The other end of the battery cell 20 away from the electrode terminal 24 is located in the second sub-chamber 152, and heat is exchanged with the external air under the action of the ventilation hole 16, so as to achieve heat dissipation of the battery cell 20.

[0094] In addition, the ventilation holes 16 can reduce the weight of the box body 10 , and while the ventilation holes 16 achieve ventilation and heat dissipation, they replace the cooling and heat dissipation structure, which can further reduce the overall weight of the box body 10 .

[0095] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A battery, characterized in that: The invention comprises a box body, wherein the box body comprises: The box body has a containing cavity; A partition is arranged in the accommodating cavity and divides the accommodating cavity into a first sub-cavity and a second sub-cavity. The first sub-cavity is a sealed cavity. A ventilation hole is formed through at least part of the cavity wall of the second sub-cavity. The second sub-cavity is connected to the external environment through the ventilation hole.

2. The battery according to claim 1, characterized in that The box body includes a base and a cover plate which are mutually enclosed to form the accommodating cavity, the partition is sealed between the base and the cover plate, the first sub-cavity is located between the partition and the cover plate, and the second sub-cavity is located between the partition and the base.

3. The battery according to claim 2, characterized in that The ventilation holes are at least formed on two side walls of the base, and the ventilation holes include a plurality of ventilation holes, each of which is evenly distributed on the corresponding side walls in a matrix.

4. The battery according to claim 1, characterized in that The separator is provided with a limiting groove, which is used to accommodate a battery cell and to limit the battery cell in a direction parallel to the separator.

5. The battery according to claim 4, characterized in that The separator is provided with a plurality of the limiting grooves, each two adjacent limiting grooves are arranged at intervals, and each limiting groove is arranged in one-to-one correspondence with the battery monomer.

6. The battery according to any one of claims 1 to 5, characterized in that: The separator is an insulating separator.

7. The battery according to claim 1, characterized in that The battery further comprises a battery cell, and the battery cell is arranged in the accommodation cavity.

8. The battery according to claim 7, characterized in that One end of the battery cell provided with an electrode terminal is located in the first sub-cavity, and the other end of the battery cell facing away from the electrode terminal is located in the second sub-cavity.

9. The battery according to claim 8, characterized in that In the height direction of the battery cell, the height of the battery cell in the first sub-cavity is smaller than the height of the battery cell in the second sub-cavity.

10. An electrical device, characterized in that: Comprising a battery as claimed in any one of claims 1 to 9.

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