WO2020103061A1

WO2020103061A1 - Battery, unmanned aerial vehicle having battery, and electronic device

Info

Publication number: WO2020103061A1
Application number: PCT/CN2018/116808
Authority: WO
Inventors: 张瑞强; 李日照; 张彩辉
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2020-05-28
Also published as: CN110892577A

Abstract

Disclosed in the present application are a battery, an unmanned aerial vehicle having said battery, and an electronic device, the battery comprising: a housing that has thermal conductivity, a plurality of cells that are disposed within the housing and that are spaced apart from each other, and a thermally conductive structure that is disposed within the housing and that is in thermal conductively connected to the housing and the plurality of cells, so that the amount of heat conducted by each of the cells to the housing by means of the thermally conductive structure is approximately the same.

Description

Battery and drone and electronic equipment with the battery

Technical field

The present application relates to the technical field of energy storage devices, in particular to a battery and a drone and electronic equipment having the battery.

Background technique

As the main energy storage element of the UAV, the power battery of the UAV directly affects the overall state of the UAV. However, power batteries are usually made up of multiple cells connected in series and parallel. When used, high rate discharge will generate a lot of heat. Due to the large gap in heat dissipation of each cell, the temperature of each cell is uneven, and the local temperature rise is too high, so the performance of each cell (such as internal resistance and battery loss) varies greatly, making each cell ’s performance The service life varies greatly. The battery cell with the shortest service life often becomes the bottleneck of the entire power battery, thereby affecting the normal operation of the entire battery.

Summary of the invention

The present application provides a battery and an unmanned aerial vehicle and electronic equipment provided with the battery, aiming to balance the service life of each battery cell.

A battery, including:

Housing with thermal conductivity;

A plurality of battery cells are arranged in the casing and are spaced apart from each other;

A thermally conductive structure is provided in the housing, and is thermally connected to the housing and the plurality of cells, so that the heat conducted by each cell to the housing through the thermally conductive structure is substantially the same .

A drone, including:

Body, with battery cavity;

A battery is provided in the battery cavity. The battery includes:

Housing with thermal conductivity;

An electronic device, including:

Body, with battery installation compartment;

The battery is provided in the battery installation compartment, and the battery includes:

Housing with thermal conductivity;

In the battery, the unmanned aerial vehicle, and the electronic equipment provided in the embodiments of the present application, since the thermally conductive structure is thermally connected to the casing and the plurality of cells, the heat conducted by each cell to the casing through the thermally conductive structure is substantially the same. The heat dissipated by each cell is approximately the same, thereby reducing the temperature difference of each cell, ensuring that the temperature of each cell is approximately the same, and thereby reducing the difference in internal resistance and voltage imbalance caused by the temperature difference of each cell, balancing each cell The service life of the core ensures that the whole battery can work normally.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of an angle of a battery provided by an embodiment of the present application;

2 is an exploded schematic view of the battery in FIG. 1;

3 is a schematic structural view of an angle of a battery provided by an embodiment of the present application;

4 is a partially enlarged schematic view of the battery in FIG. 3 at A;

5 is a schematic structural diagram of a heat dissipation rack provided by an embodiment of the present application;

6 is a schematic structural diagram of a battery provided by another embodiment of the present application;

7 is a schematic structural diagram of a battery provided by another embodiment of the present application;

8 is a schematic structural diagram of a battery provided by another embodiment of the present application;

9 is a schematic structural diagram of a battery provided by yet another embodiment of the present application;

10 is a schematic structural diagram of a drone provided by an embodiment of the present application;

11 is a schematic diagram of an electronic device provided by an embodiment of the present application.

Description of reference signs:

100, battery; 110, case; 111, first side plate; 112, second side plate; 113, third side plate; 114, receiving cavity; 115, bottom case; 120, battery core; 121, first power Core group; 122, second cell group; 130, thermally conductive structure; 131, thermally conductive frame; 1311, first plate; 1312, second plate; 1313, third plate; 140, spacer; 150, air Channel; 160, thermally conductive layer; 200, drone; 210, fuselage; 211, battery cavity; 220, propeller; 300, electronic equipment; 310, body; 311, battery installation compartment.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

It should also be understood that the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit this application. As used in the specification of the present application and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

It should also be further understood that the term "and / or" used in the specification of the present application and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes these combinations .

The inventor of the present application has found through careful research that the internal resistance and voltage of each cell in the battery in the electronic device are greatly different, which will make the service life of each cell vary greatly. The battery cell with the shortest service life often becomes the bottleneck of the entire power battery, affecting the normal use of the overall battery. One of the important reasons that the voltage and internal resistance of each cell are different is that the aging degree of each cell is different. The thermal factor is one of the main factors of cell aging. The external battery has better heat dissipation effect and longer service life. However, due to the poor heat dissipation effect, the capacity loss is serious, and the service life is short, which makes it difficult for the entire cell to work properly. Therefore, whether the heat dissipation of each cell is uniform will greatly affect whether the service life of each cell is balanced.

In response to this discovery, the inventor of the present application has improved the battery structure to make the heat dissipation of each cell approximately uniform, reduce the temperature difference of each cell, and thereby reduce the internal resistance difference and voltage imbalance caused by the temperature difference of each cell , So as to balance the service life of each cell. Specifically, the present application provides a battery including: a housing having thermal conductivity; a plurality of cells, disposed in the housing and spaced apart from each other; a thermally conductive structure, disposed in the housing and connected to the housing The body is thermally connected to the plurality of cells, so that the heat conducted by each cell to the housing through the thermally conductive structure is substantially the same.

Example one

Please refer to FIG. 1 to FIG. 5, this embodiment provides a battery 100 including a case 110, a battery core 120 and a heat conducting structure 130.

Please refer to FIGS. 1 and 3. In order to more clearly describe the arrangement of the components, the stacking direction of each cell 120 is defined as the X direction. The direction perpendicular to the X direction, that is, the direction perpendicular to the stacking direction of each cell 120 is the Y direction.

The casing 110 has thermal conductivity to radiate the heat conducted by the thermal conductive structure 130 to the outside of the battery 100, and extend the heat absorption time of the thermal conductive structure 130.

Specifically, referring to FIGS. 1 to 3, the housing 110 includes a first side plate 111, a second side plate 112 and two third side plates 113. The first side plate 111 and the second side plate 112 are spaced apart along the Y direction. The two third side plates 113 are arranged at intervals in the X direction. The first side plate 111 and the second side plate 112 are both connected to the two third side plates 113 to form an accommodating cavity 114 for accommodating the battery core 120 and the heat conducting structure 130.

In this embodiment, both the first side plate 111 and the second side plate 112 have thermal conductivity, and are both thermally connected with the thermal conductive structure 130, so that the heat that each cell 120 leads to the housing 110 through the thermal conductive structure 130 is roughly In the same way, the temperature difference of the cells 120 is reduced, thereby reducing the internal resistance difference and voltage imbalance caused by the temperature difference of each cell 120, thereby balancing the service life of each cell.

In this embodiment, the materials of the first side plate 111 and the second side plate 112 may be any materials with good thermal conductivity, such as aluminum, copper, silver, aluminum alloy, copper alloy, silver alloy, graphene, carbon nano Tube etc. Preferably, the materials of the first side plate 111 and the second side plate 112 are plates made of aluminum alloy material, and the aluminum alloy has a high thermal conductivity. When the battery core 120 is working, the plate body made of aluminum alloy can A part of the heat is dissipated to the surrounding environment of the battery in the form of heat radiation and / or convection, thereby reducing the heat storage load of the heat conductive structure 130 and extending the heat absorption time of the heat conductive structure 130.

In an embodiment, the housing 110 may be a spliced assembly structure. For example, the components of the first side plate 111, the second side plate 112, and the two third side plates 113 are independent components, and the housing 110 includes a first side plate 111, a second side plate 112, and two third The components of the side plate 113 are spliced together. The connection between the first side plate 111, the second side plate 112 and the third side plate 113 may be a detachable connection or a fixed connection. The movable connection may be, for example, a connection structure such as a snap structure or screws. The fixed connection method may be, for example, welding.

It can be understood that in other embodiments, the housing 110 may also be integrally formed, that is, the first side plate 111, the second side plate 112, and the two third side plates 113 are formed integrally to save the assembly process of the housing 110 To improve the assembly efficiency of the battery 100; at the same time, it can also improve the sealing performance of the battery.

In this embodiment, the specific shape of the housing 110 can be designed according to actual needs, for example, it is designed to include at least one of the following forms: a solid plate body, a hollow plate body, a plate body having a mesh, and a honeycomb plate on the surface The body, a plate body having a concave-convex groove shape, etc., may be sufficient to enable each cell 120 to conduct heat to the case 110 through the heat conducting structure 130 to be substantially the same.

Please refer to FIGS. 1 to 3, the number of the battery cells 120 is multiple. The plurality of cells 120 may be connected in series, in parallel, or in combination in series and parallel. The voltage of the battery 100 may be increased in series, and the capacity of the battery 100 may be increased in parallel.

It can be understood that during the operation of the battery core 120, the battery core 120 generates a large amount of heat. In order to extend and balance the service life of each battery cell 120 to ensure that the battery 100 can work normally, the heat generated by the battery cells 120 needs to be quickly and evenly dissipated. In this embodiment, the heat generated by the battery core 120 includes at least the following two ways:

The first heat dissipation method: the heat conductive structure 130, the outer shell of the battery core 120, and the housing 110 form a heat dissipation structure. The outer shell of the battery core 120 is thermally connected to the housing 110 through the heat conductive structure 130, and is transferred by heat exchange, heat radiation, etc. Heat dissipation.

The second heat dissipation method: each cell 120 is at least partially surrounded by air in the receiving cavity 114. The air in the accommodating cavity 114 can exchange heat with the battery core 120, the housing 110, and the heat conductive structure 130, so that between the plurality of battery cores 120, between the battery core 120 and the housing 110, the heat conductive structure 130 and the housing 110 Between the battery core 120 and the heat-conducting structure 130, heat can be conducted through the flowing air, so that part of the heat generated during the operation of the battery core 120 can be extracted.

It should be noted that the method of dissipating the heat generated by the battery core 120 is not limited to the above two, and any method that can dissipate the heat generated by the battery core 120 should fall within the protection scope of this embodiment.

Please refer to FIG. 1 to FIG. 3, a plurality of cells 120 are spaced apart to form a plurality of air channels 150, so that the area of each cell 120 surrounded by air is larger, thereby improving the heat dissipation efficiency of each cell 120 and reducing The temperature difference of each cell 120 further reduces the internal resistance difference and voltage imbalance caused by the temperature difference of each cell 120, thereby balancing the service life of each cell 120.

Referring to FIGS. 1 and 3, in an alternative embodiment, each cell 120 is provided with a spacer 140 at both ends in the X direction, so that two adjacent cells 120 are spaced apart to A plurality of air channels 150 are formed to make the area of each cell 120 surrounded by air larger, improve the heat dissipation efficiency of each cell 120, and reduce the temperature difference of each cell 120.

In an embodiment, the spacer 140 may be a filler capable of preventing the battery core 120 from shaking within the housing, such as foam, glue, or tape. On the one hand, the filler can reduce the temperature difference of each cell 120, thereby reducing the internal resistance difference and voltage imbalance caused by the temperature difference of each cell 120, thereby balancing the service life of each cell 120. On the other hand, when the battery 100 vibrates during use, the filler can prevent the tabs of the battery 100 from being deformed or broken by the pulling force of the battery cell 120 to ensure the battery 100 and the use of the battery 100 Use security of the man-machine 200 and the electronic device 300. It can be understood that, in other embodiments, the spacer 140 may also be other spacers such as thermal pads, so that two adjacent cells can be spaced apart.

Please refer to FIG. 1 to FIG. 3 again, a plurality of cells 120 are arranged in a double row stack. The spacing between adjacent cells 120 in each row of stacked cells 120 is approximately the same, so that the heat exchange between each cell 120 and the air is approximately the same, so as to further reduce the temperature difference of each cell 120, and then balance each The service life of the battery core 120. Specifically, the plurality of cells 120 are arranged in a double row into a first cell group 121 and a second cell group 122, and each of the first cell group 121 and the second cell group 122 includes at least two stacked rows along the X direction Cells set on cloth.

It can be understood that the side of the cells in the first cell group 121 facing away from the second cell group 122 is thermally connected to the housing 110 through the first partial area of the thermal conductive structure 130, and the cells in the second cell group 122 are facing away One side of the first cell group 121 is thermally connected to the housing 110 through the second partial area of the heat conductive structure 130, so that each cell 120 dissipates heat uniformly, reducing the temperature difference of each cell 120, thereby reducing each cell 120 due to The difference in internal resistance and voltage imbalance caused by the temperature difference further balance the service life of each cell 120.

Please refer to FIGS. 1 to 5, the thermal conductive structure 130 is received in the receiving cavity 114, and is thermally connected to the housing 110 and the plurality of cells 120. In other words, the thermally conductive structure 130 can conduct the heat generated by the operation of each cell 120 to the housing 110, and the conducted heat is approximately the same, so as to facilitate the uniform heat dissipation of each cell 120 and ensure the temperature of each cell 120 The consistency of the battery, thereby effectively reducing the internal resistance difference and voltage imbalance caused by the temperature difference of each battery cell 120, thereby ensuring that the service life of each battery cell 120 is approximately the same. Specifically, the heat conductive structure 130 includes a heat conductive frame 131. The setting manner of the heat conducting frame 131 can be designed according to actual needs.

For example, in an alternative embodiment, a plurality of cells 120 share a heat conducting frame 131, and the contact area of each cell 120 and the heat conducting frame 131 is approximately the same, so that each cell 120 is conducted to the housing through the heat conducting frame 131 The heat of 110 is approximately the same, which is conducive to the uniform heat dissipation of each cell 120.

Please refer to FIG. 1 to FIG. 3, it can be understood that, in yet another alternative embodiment, each battery core 120 may be provided with a corresponding heat conducting frame 131 to dissipate part of the heat generated by the battery core 120 to reduce electricity The temperature of the core 120 balances the service life of each cell 120. The heat conducted by each battery cell 120 to the housing 110 through the corresponding heat-conducting frame 131 is substantially the same, so as to avoid mutual influence between the battery cells 110 and further facilitate the uniform heat dissipation of the battery cells 110.

Specifically, the contact area of each heat conducting frame 131 for thermally conductive connection with the housing 110 is substantially the same as the contact area of the housing 110, so that the heat conducted by each cell 120 to the housing 110 through the heat conducting frame 131 is approximately the same, so that each The heat conduction efficiency of the heat conducting frame 131 is approximately the same, so that the heat dissipation of each cell 120 is approximately the same, reducing the temperature difference of each cell 120, ensuring that the temperature of each cell 120 is approximately the same, and thereby reducing the temperature difference caused by each cell 120 The difference in internal resistance and the imbalance in voltage further balance the service life of each cell 120.

Referring to FIG. 5, the heat conduction 131 includes a first plate body 1311, a second plate body 1312 and a third plate body 1313.

Wherein, the first plate body 1311 is in thermally conductive contact with each cell 120 so that the heat of each cell 120 is conducted to the first plate body 1311. The first plate 1311 is thermally connected to the housing 110 through direct contact or indirect contact. Specifically, the first plate body 1311 has an abutting portion, and the abutting portion abuts on the housing 110 to conduct the heat of the first plate body 1311 to the housing 110.

In this embodiment, the first plate body 1311 directly contacts the battery core 120. The direct contact method between the first plate body 1311 and the battery core 120 may adopt different methods according to actual requirements, for example, multi-point contact, line contact, surface contact, and the like. Specifically, in this embodiment, the first plate body 1311 is in surface contact with the battery core, so as to increase the contact area between the battery core 120 and the first plate body 1311, and improve the heat dissipation efficiency of the battery core 120.

As an optional embodiment, the size of the first plate body 1311 is adapted to the corresponding size of the battery core 120 so that the first plate body 1311 and the battery core 120 are in surface contact. Specifically, the size of the portion of the battery core 120 that is in contact with the first plate body 1311 is approximately equal to the size of the first plate body 1311, so that the third plate body 1313 is in surface contact with the battery core 120, thereby increasing the battery core The contact area between 120 and the housing 110 further improves the heat dissipation efficiency of the battery core 120. The height of the first plate body 1311 is equal to or lower than the height of the battery core 120.

It can be understood that, in other embodiments, the first plate body 1311 may also be thermally connected to the battery core 120 through indirect contact, for example, a heat transfer layer is provided between the first plate body 1311 and the battery core 120. The heat transfer layer may be made of a material with good thermal conductivity, such as a thermally conductive silica gel layer, a thermally conductive silicone grease layer, or a thermally conductive plating medium layer.

Please refer to FIG. 5 again, the second plate body 1312 is bent and extended from one end of the first plate body 1311, and is located between the corresponding battery core 120 and the housing 110, and is thermally connected to the corresponding battery core 120 and the housing 110 . Specifically, each cell in the first cell group 121 is thermally connected to the first side plate 111 through the corresponding second plate body 1312, and each cell in the second cell group 122 passes through the corresponding second plate body 1312 Thermally connected to the second side plate 112.

In an alternative embodiment, the second plate 1312 is in direct contact with the housing 110. The direct contact between the second plate 1312 and the housing 110 can be in different ways according to actual needs, for example, multi-point contact, line contact, surface contact, etc. Specifically, in this embodiment, the second plate body 1312 is in surface contact with the housing 110 to increase the contact area between the second plate body 1312 and the housing 110 and improve the heat conduction efficiency of the heat conducting frame 131.

As an optional embodiment, the size of the second plate body 1312 is adapted to the corresponding size of the housing 110 so that the second plate body 1312 and the housing 110 are in surface contact. Specifically, the size of the portion of the first side plate 111 or the second side plate 112 that is in contact with the second plate body 1312 is approximately equal to the size of the second plate body 1312 to increase the size of the housing 110 and the second plate The contact area of the body 1312 improves the heat conduction efficiency of the heat conduction frame 131, thereby accelerating the heat dissipation speed of the battery core 120.

It can be understood that, in other embodiments, the second plate 1312 may also be thermally connected to the housing 110 through indirect contact. For example, referring to FIG. 4, a heat conductive layer 160 is provided between the second plate 1312 and the housing 110, and the heat of the second plate 1312 is conducted to the housing 110 through the heat conductive layer 160 to improve the heat conduction efficiency of the heat conducting frame 131, Therefore, the heat dissipation efficiency of the battery core 120 is improved. Specifically, the heat conduction layer 160 is provided at the connection portion between the second plate body 1312 of each heat conduction frame 131 and the housing 110, so that the heat conduction efficiency of each heat conduction frame 131 is approximately the same, thereby further ensuring that the electric cells 120 are heated approximately the same .

In this embodiment, the angle between the second plate 1312 and the first plate 1311 can be designed as an acute angle, an obtuse angle, or a right angle according to actual needs, so that the first plate 1311 and the battery core 120, the second plate The effective thermal conductive contact between 1312 and the housing 110 is sufficient.

Please refer to FIG. 1 to FIG. 3, the third plate 1313 is bent and extended from the other end of the first plate 1311, and the third plate 1313 and the second plate 1312 are oppositely arranged. Specifically, the third plate body 1313 and the second plate body 1312 are bent and extended toward the same side of the first plate body 1311 from opposite ends of the first plate body 1311 respectively.

It can be understood that the third plate body 1313 is thermally connected to the corresponding battery core 120. The third plate body 1313 and the battery core 120 may be in direct contact. The direct contact method between the third plate body 1313 and the battery core 120 may adopt different methods according to actual requirements, for example, multi-point contact, line contact, surface contact, and the like. Specifically, in this embodiment, the third plate 1313 is in surface contact with the battery core 120 to increase the contact area between the battery core 120 and the heat conducting frame 110 and improve the heat dissipation efficiency of the battery core 120.

As an optional embodiment, the portion of the thermal conductive structure 130 for contacting the battery core 120 and the battery core 120 are both spaced apart from the third side plate 113. That is, the battery cell 120 and the first plate body 1311 are both spaced apart from the case 110 so that the first and last two cells 120 in the stacking direction of the cells and the center-located cell 120 conduct approximately the same amount of heat to the case 110 To reduce the temperature difference of each cell 120, thereby reducing the internal resistance difference and voltage imbalance caused by the temperature difference of each cell 120, and thus balancing the service life of each cell 120. Specifically, each cell 120 and the first plate body 1311 are spaced apart from the third side plate 113.

The angle between the third plate 1313 and the first plate 1311 can be designed as an acute angle, an obtuse angle, or a right angle according to actual requirements, so that the third plate 1313 and the battery core 120 can be effectively thermally conductively contacted. In this embodiment, the third plate 1313 and the first plate 1311 are substantially at right angles.

In this embodiment, the cross section of the heat conducting frame 131 is U-shaped. In one embodiment, please refer to FIG. 1 and FIG. 3, the U-shaped openings of adjacent heat conducting frames 131 along the X direction are opposite. Specifically, the two U-shaped heat conducting frames 131 are clamped on the outside of the two electric cells 120. In this way, the air channel 150 is formed between the two electric cells 120 clamped between the two U-shaped heat conducting frames 131, the air The channel 150 can increase the heat dissipation efficiency of the two cells 120, thereby improving the heat dissipation efficiency of the cells 120.

In this embodiment, the thickness of the plate body of the heat conducting frame 131 can be designed according to actual requirements. In an embodiment, the thickness of the plate body of the heat conducting frame 131 may be 0.03 mm to 4.5 mm. For example, 0.03mm, 0.10mm, 0.20mm, 0.30mm, 0.40mm, 0.50mm, 0.60mm, 0.70mm, 0.80mm, 0.90mm, 1.00mm, 1.50mm, 2, 00mm, 2.50mm, 3.00mm, 3. 50mm, 4.00mm, 4.50mm, and any value within the range defined by any two of the above values.

In this embodiment, the material of the heat conducting frame 131 may be any material with good thermal conductivity, such as aluminum, copper, silver, aluminum alloy, copper alloy, silver alloy, graphene, carbon nanotube, etc.

Please refer to FIG. 2. In an alternative embodiment, the housing 110 further includes a bottom shell 115, and the heat conducting structure 130 and each battery core 120 are disposed on the bottom shell 115.

In an embodiment, the heat conductive structure 130 and the housing 110 may be separate components. The connection method between the heat conducting frame 131 and the housing 110 can be designed according to actual needs, such as a fastening method such as a buckle, an adhesive layer, or a screw lock.

Specifically, in an embodiment, the first side plate 111 or the second side plate 112 may be fixed to the heat conducting frame 131 through an adhesive layer. Preferably, the adhesive layer may also have a heat conduction function, that is, the aforementioned heat conduction layer, which can not only fix the heat conducting frame 131 and the housing 110, but also conduct heat from the heat conducting frame 131 to the housing 110.

It can be understood that, in other embodiments, the heat conductive structure 130 and the case 110 may be integrally formed. For example, the heat conductive structure 130 is directly formed on the case 110 to reduce the assembly steps of the battery 100 and improve the assembly efficiency of the battery 100.

When the battery 100 is used, the heat generated by each cell 120 will be radiated into the surrounding air by the action of thermal radiation. The air channel 150 in the receiving cavity 114 gathers a large amount of heat. The heat in the air channel 150 can conduct the heat to On the heat conducting structure 130 and the housing 110. In addition, the portion of the plurality of cells 120 that is used for thermally conductive connection with the thermally conductive structure 130 conducts heat to the thermally conductive structure 130 through thermal conduction; the portion of the thermally conductive structure 130 that is used for thermally conductive connection with the housing via thermal conduction Conduct heat to the housing 110. The airflow outside the casing 110 can take away heat through the surface of the casing 110, thereby accelerating the cooling rate of the battery 100, and realizing that the temperatures of the cells 120 are substantially the same.

Example 2

Please refer to FIG. 3. In the first embodiment, the U-shaped openings of adjacent heat conducting frames 131 along the X direction are opposite. Referring to FIG. 6, the difference between Embodiment 2 and Embodiment 1 is only that in Embodiment 2, the U-shaped openings of adjacent heat conducting frames 131 along the X direction are oriented in the same direction.

Example Three

Please refer to FIGS. 3 and 5. In the first embodiment, the heat conducting frame 131 includes a first plate body 1311, a second plate body 1312 and a third plate body 1313. The cross section of the heat conducting frame 131 is U-shaped. Referring to FIG. 7, the difference between Embodiment 3 and Embodiment 1 is only that in Embodiment 3, the third plate body 1313 is omitted, and the cross section of the heat conducting frame 131 is L-shaped.

Example 4

Referring to FIG. 7, in the third embodiment, each second plate 1312 is bent from one end of the corresponding first plate 1311 and extends in opposite directions, that is, the L-shaped openings of the heat conducting frame 131 face in opposite directions. Referring to FIG. 8, the difference between Embodiment 4 and Embodiment 3 is only that in Embodiment 4, the L-shaped openings of the heat conducting frame 131 are oriented in the same direction. In other words, in this embodiment, the second plate bodies 1312 of two adjacent heat conducting frames 131 along the X direction are bent and extended toward the positive direction of the X direction along one end of the corresponding first plate body 1311. The so-called positive direction of the X direction is the direction indicated by the arrow in the figure.

Example 5

Please refer to FIG. 3. In the first embodiment, a plurality of cells 120 are stacked in a double row. The difference between Embodiment 5 and Embodiment 1 is only that, referring to FIG. 9, in Embodiment 5, in order to achieve miniaturization of the battery 100, simplify the structure of the battery 100, and reduce the weight of the battery, the battery core 120 is single in the X direction Arranged in rows. Specifically, the plurality of battery cells 120 are stacked in a single row along the longitudinal direction or the width direction of the receiving cavity 114.

In this embodiment, the second side plate 112 can be made of materials with or without thermal conductivity according to actual needs.

In one embodiment, the second side plate 112 is thermally connected to the thermally conductive structure 130 to improve the heat dissipation efficiency of each cell 120, effectively reduce the temperature of the cell 120, and extend the service life of the cell 120. Specifically, both the second plate body 1312 and the third plate body 1313 of the heat conductive structure 130 are thermally connected to the housing 110. That is, the second plate 1312 is thermally connected to the first side plate 111, and the third plate 1313 is thermally connected to the second side plate 112.

In the above embodiment, the second side plate 112 may be any material with good thermal conductivity, such as aluminum, copper, silver, aluminum alloy, copper alloy, silver alloy, graphene, carbon nanotube, and the like.

It can be understood that, in other embodiments, the second side plate 112 may also be made of a material that does not have thermal conductivity according to actual needs, and the second side plate 112 is spaced apart from the heat conductive structure 130.

It should be noted that the specific structure of the heat conductive structure 130 is not limited to the structure described above, and can be designed according to actual needs. For example, a plurality of battery cells 120 share a heat conducting frame 131 to ensure that the heat conducted by each battery cell to the housing 110 through the heat conducting structure 130 is substantially the same.

Similarly, the arrangement of the plurality of heat conducting frames 131 can also be arranged according to actual needs, and is not limited to the arrangement described above, as long as it can ensure that the heat conducted by each cell 120 to the housing 110 through the heat conducting structure 130 is substantially the same can. For example, when the cross section of the heat conducting frame 131 is U-shaped and the number of the heat conducting frames 131 is at least three, the U-shaped openings of two heat conducting frames 131 face the same direction; the U-shaped openings of the other heat conducting frames 131 face the same direction, and The U-shaped openings of the two heat conducting frames 131 are opposite.

In addition, the arrangement manner of the battery cells 120 is not limited to the arrangement manner described above, and can be arranged according to actual needs. For example, a plurality of battery cells 120 are arranged along the width direction (Y direction) or the length direction (X direction) of the receiving cavity 114 In three or more rows, as long as it can ensure that the heat conducted by each battery cell 120 to the housing 110 through the heat conducting structure 130 is substantially the same.

Referring to FIG. 10, an embodiment of the present application further provides a drone 200. The drone 200 includes a fuselage 210, a propeller 220 and a battery 100. The body 210 has a battery cavity 211. The battery 100 is provided in the battery cavity 211. The external wind source can generate air convection, and the surface of the housing 110 can exchange heat with the airflow generated by the external wind source, thereby removing the heat from the surface of the housing 110.

It can be understood that, in an embodiment, the air source of convection air may directly come from the propeller 220, and the air flow generated by the propeller 220 is introduced to the surface of the battery 100 through the air duct.

In another embodiment, the wind source of convection air may also come from a fan, which is installed in the body 210 of the drone 200 or on the battery 100.

Referring to FIG. 11, an embodiment of the present application further provides an electronic device 300 including a body 310 and a battery 100. The body 310 has a battery mounting compartment 311. The battery 100 is provided in the battery installation compartment 311. The external wind source can generate air convection, and the surface of the housing 110 can exchange heat with the airflow generated by the external wind source, thereby removing the heat from the surface of the housing 110.

In the battery 100, the unmanned aerial vehicle 200, and the electronic device 300 provided in the above embodiments, since the thermally conductive structure 130 is thermally connected to the housing 110 and the plurality of cells 120, each cell 120 is conducted to The heat of the housing 110 is approximately the same, so that the heat dissipated by each cell 120 is approximately the same, thereby reducing the temperature difference of each cell 120, ensuring that the temperature of each cell 120 is approximately the same, and thereby reducing the temperature difference of each cell 120 due to the temperature difference The resulting internal resistance difference and voltage imbalance, thereby balancing the service life of each cell 120.

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of various equivalents within the technical scope disclosed in this application Modifications or replacements, these modifications or replacements should be covered within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A battery, characterized in that it includes:

Housing with thermal conductivity;

A plurality of battery cells are arranged in the casing and are spaced apart from each other;

A thermally conductive structure is provided in the housing, and is thermally connected to the housing and the plurality of cells, so that the heat conducted by each cell to the housing through the thermally conductive structure is substantially the same .
The battery according to claim 1, wherein the thermally conductive structure comprises:

The heat conducting frame is matched with the number of the electric cores, and the electric core is thermally connected to the casing through the heat conducting frame to conduct the heat generated by the electric core.
The battery according to claim 2, wherein the heat conducting frame comprises:

The first plate body is in contact with the battery core;

The second plate body is bent and extended from one end of the first plate body, and is thermally connected to the housing.
The battery according to claim 3, wherein the battery cell and the first plate are both spaced apart from the case.
The battery according to claim 3, wherein the heat conducting frame further comprises:

The third plate body is bent and extended from the other end of the first plate body, and the third plate body is disposed opposite to the second plate body.
The battery according to claim 5, wherein the cross section of the heat conducting frame is U-shaped, and the U-shaped openings of adjacent heat conducting frames in the stacking direction of the cells are opposite.
The battery according to claim 5, wherein the cross section of the heat conducting frame is U-shaped, and the direction of U-shaped openings of adjacent heat conducting frames in the stacking direction of the cells is the same.
The battery according to claim 5, wherein the second plate body and the third plate body are both perpendicular to the first plate body.
The battery according to claim 4, wherein the size of the first plate body is adapted to the size corresponding to the cell, so that the first plate body is in surface contact with the cell.
The battery according to claim 9, wherein the height of the first plate body is equal to or lower than the height of the battery cell.
The battery according to claim 2, wherein the case is in direct or indirect contact with the heat conducting frame.
The battery according to claim 11, wherein the thermally conductive structure is connected to the case by a buckle, an adhesive layer, or a screw lock.
The battery according to claim 11, wherein the battery further comprises:

A heat conduction layer is provided between the heat conduction frame and the casing to conduct the heat of the heat conduction frame to the casing.
The battery according to claim 13, wherein the thermally conductive layer comprises a thermally conductive silica gel layer, a thermally conductive silicone grease layer or a thermally conductive plating medium layer.
The battery according to any one of claims 1 to 14, wherein the case includes:

The first side plate has thermal conductivity, and the thermally conductive structure is thermally connected to the first side plate;

The second side plate is spaced apart from the first side plate;

Two third side plates are arranged at intervals along the stacking direction of the cells, and the first side plate, the second side plate and the two third side plates surround to form a receiving cavity, and the cells And the heat conducting structure is accommodated in the accommodating cavity.
15. The battery according to claim 15, wherein the portion of the thermally conductive structure for contacting the cell and the cell are both spaced apart from the third side plate of the second side plate.
The battery according to claim 15, wherein the two first side plates, the second side plate, and the two second side plates and the third side plate are integrally formed.
The battery according to claim 15, wherein the two first side plates, the second side plates, and the two second side plates and third side plates are provided separately.
The battery according to any one of claims 1 to 14, wherein each of the cells is stacked in a single row.
The battery according to any one of claims 1 to 14, wherein each of the cells is stacked in a double row, and both the first side plate and the second side plate are thermally connected to the thermally conductive structure .
A UAV is characterized by including:

Body, with battery cavity;

A battery is provided in the battery cavity. The battery includes:

Housing with thermal conductivity;

A plurality of battery cells are arranged in the casing and are spaced apart from each other;

A thermally conductive structure is provided in the housing, and is thermally connected to the housing and the plurality of cells, so that the heat conducted by each cell to the housing through the thermally conductive structure is substantially the same .
The UAV according to claim 21, wherein the heat conductive structure comprises:

The heat conducting frame is matched with the number of the electric cores, and the electric core is thermally connected to the casing through the heat conducting frame to conduct the heat generated by the electric core.
The drone according to claim 22, wherein the heat conducting frame comprises:

The first plate body is in contact with the battery core;

The second plate body is bent and extended from one end of the first plate body, and is thermally connected to the housing.
The unmanned aerial vehicle according to claim 23, characterized in that both the electric core and the first plate body are spaced apart from the casing.
The drone according to claim 23, wherein the heat conducting frame further comprises:

The third plate body is bent and extended from the other end of the first plate body, and the third plate body is disposed opposite to the second plate body.
The UAV according to claim 25, wherein the cross section of the heat conducting frame is U-shaped, and the U-shaped openings of adjacent heat conducting frames in the stacking direction of the cells are opposite.
The UAV according to claim 25, wherein the cross section of the heat conducting frame is U-shaped, and the direction of U-shaped openings of adjacent heat conducting frames in the stacking direction of the cells is the same.
The drone according to claim 25, wherein the second plate body and the third plate body are both perpendicular to the first plate body.
The unmanned aerial vehicle according to claim 24, characterized in that the size of the first plate body is adapted to the size corresponding to the battery core, so that the first plate body is in surface contact with the battery core.
The drone according to claim 29, wherein the height of the first plate body is equal to or lower than the height of the battery core.
The unmanned aerial vehicle according to claim 22, wherein the housing is in direct or indirect contact with the heat conducting frame.
The unmanned aerial vehicle according to claim 31, characterized in that the heat conducting structure is connected to the housing by a buckle, an adhesive layer or a screw lock.
The drone according to claim 31, wherein the battery further comprises:

A heat conduction layer is provided between the heat conduction frame and the casing to conduct the heat of the heat conduction frame to the casing.
The drone according to claim 33, characterized in that the thermally conductive layer comprises a thermally conductive silica gel layer, a thermally conductive silicone grease layer or a thermally conductive plating medium layer.
The drone according to any one of claims 21 to 34, wherein the housing includes:

The first side plate has thermal conductivity, and the thermally conductive structure is thermally connected to the first side plate;

The second side plate is spaced apart from the first side plate;

Two third side plates are arranged at intervals along the stacking direction of the cells, and the first side plate, the second side plate and the two third side plates surround to form a receiving cavity, and the cells And the heat conducting structure is accommodated in the accommodating cavity.
The unmanned aerial vehicle according to claim 35, characterized in that the portion for contacting the battery core and the battery core in the heat conduction structure are both spaced apart from the second side plate and the third side plate .
The drone according to claim 35, wherein two of the first side plates, the second side plates, and two third side plates of the second side plates are integrally formed.
The UAV according to claim 35, wherein two of the first side plates, the second side plates, and two third side plates of the second side plates are provided separately.
The unmanned aerial vehicle according to any one of claims 21 to 34, wherein each of the battery cells is stacked in a single row.
The unmanned aerial vehicle according to any one of claims 21 to 34, wherein each of the battery cells is stacked in a double row, and the first side plate and the second side plate are both connected to the heat conducting structure Thermal connection.
An electronic device, characterized in that it includes:

Body, with battery installation compartment;

The battery is provided in the battery installation compartment, and the battery includes:

Housing with thermal conductivity;

A plurality of battery cells are arranged in the casing and are spaced apart from each other;

A thermally conductive structure is provided in the housing, and is thermally connected to the housing and the plurality of cells, so that the heat conducted by each cell to the housing through the thermally conductive structure is substantially the same .
The electronic device of claim 41, wherein the thermally conductive structure comprises:

The heat conducting frame is matched with the number of the electric cores, and the electric core is thermally connected to the casing through the heat conducting frame to conduct the heat generated by the electric core.
The electronic device according to claim 42, wherein the heat conducting frame comprises:

The first plate body is in contact with the battery core;

The second plate body is bent and extended from one end of the first plate body, and is thermally connected to the housing.
The electronic device according to claim 43, wherein the battery cell and the first board are both spaced apart from the casing.
The electronic device according to claim 43, wherein the heat conducting frame further comprises:

The third plate body is bent and extended from the other end of the first plate body, and the third plate body is disposed opposite to the second plate body.
The electronic device according to claim 45, wherein the cross section of the heat conducting frame is U-shaped, and the U-shaped openings of adjacent heat conducting frames in the stacking direction of the cells are opposite.
The electronic device according to claim 45, wherein the cross section of the heat conducting frame is U-shaped, and the direction of U-shaped openings of adjacent heat conducting frames in the stacking direction of the cells is the same.
The electronic device according to claim 45, wherein both the second board body and the third board body are perpendicular to the first board body.
The electronic device according to claim 44, characterized in that the size of the first plate body is adapted to the size corresponding to the cell, so that the first plate body is in surface contact with the cell.
The electronic device according to claim 49, wherein the height of the first plate body is equal to or lower than the height of the battery cell.
The electronic device according to claim 42, wherein the housing is in direct contact or indirect contact with the heat conducting frame.
The electronic device according to claim 41, wherein the thermally conductive structure is connected to the housing by a buckle, an adhesive layer, or a screw lock.
The electronic device according to claim 51, wherein the battery further comprises:

A heat conduction layer is provided between the heat conduction frame and the casing to conduct the heat of the heat conduction frame to the casing.
The electronic device according to claim 53, wherein the thermally conductive layer comprises a thermally conductive silica gel layer, a thermally conductive silicone grease layer or a thermally conductive plating medium layer.
The electronic device according to any one of claims 41 to 54, wherein the housing includes:

The first side plate has thermal conductivity, and the thermally conductive structure is thermally connected to the first side plate;

The second side plate is spaced apart from the first side plate;

Two third side plates are arranged at intervals along the stacking direction of the cells, and the first side plate, the second side plate and the two third side plates surround to form a receiving cavity, and the cells And the heat conducting structure is accommodated in the accommodating cavity.
The electronic device according to claim 55, wherein the portion of the thermally conductive structure for contacting with the battery core and the battery core are both spaced apart from the third side plate of the second side plate.
The battery according to claim 55, wherein the two first side plates, the second side plate, and the two third side plates of the second side plate are integrally formed.
The electronic device according to claim 55, wherein the two first side plates, the second side plate, and the two third side plates of the second side plates are provided separately.
The electronic device according to any one of claims 41 to 54, wherein each of the battery cells is stacked in a single row.
The electronic device according to any one of claims 41 to 54, wherein each of the battery cells is stacked in a double row, and the first side plate and the second side plate both conduct heat with the heat conducting structure connection.