CN110892577A

CN110892577A - Battery and unmanned aerial vehicle and electronic equipment who have this battery

Info

Publication number: CN110892577A
Application number: CN201880039269.7A
Authority: CN
Inventors: 张瑞强; 李日照; 张彩辉
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd; Shenzhen Dajiang Innovations Technology Co Ltd
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2020-03-17
Also published as: WO2020103061A1

Abstract

The application discloses battery and unmanned aerial vehicle and electronic equipment who has this battery, this battery includes: a housing having thermal conductivity; the battery cores are arranged in the shell and are arranged at intervals; the heat conduction structure is arranged in the shell and is in heat conduction connection with the shell and the plurality of battery cells, so that the heat conducted from each battery cell to the shell through the heat conduction structure is approximately the same.

Description

Battery and unmanned aerial vehicle and electronic equipment who have this battery

Technical Field

The application relates to the technical field of energy storage devices, in particular to a battery, an unmanned aerial vehicle with the battery and electronic equipment with the battery.

Background

Unmanned aerial vehicle's power battery is as unmanned aerial vehicle's main energy storage component, and its operational aspect directly influences unmanned aerial vehicle's overall state. However, the power battery is usually formed by connecting a plurality of battery cells in series and in parallel, and when the power battery is used, high-rate discharge is performed, and a large amount of heat is generated. Because the difference of the heat dissipation degree of each battery cell is large, the temperature of each battery cell is uneven, and the local temperature rise is too high, the performance (such as internal resistance and battery loss) of each battery cell is large, and the service life difference of each battery cell is large. The battery core with the shortest service life often becomes the bottleneck of the whole power battery, thereby influencing the normal work of the whole battery.

Disclosure of Invention

The application provides a battery and unmanned aerial vehicle and electronic equipment who has this battery, aims at the life of each electric core of equilibrium.

A battery, comprising:

a housing having thermal conductivity;

the battery cores are arranged in the shell and are arranged at intervals;

the heat conduction structure is arranged in the shell and is in heat conduction connection with the shell and the plurality of battery cells, so that the heat conducted from each battery cell to the shell through the heat conduction structure is approximately the same.

An unmanned aerial vehicle, comprising:

a body having a battery cavity;

a battery disposed within the battery cavity, the battery comprising:

a housing having thermal conductivity;

the battery cores are arranged in the shell and are arranged at intervals;

An electronic device, comprising:

a body having a battery mounting compartment;

the battery is located in the battery installation storehouse, the battery includes:

a housing having thermal conductivity;

the battery cores are arranged in the shell and are arranged at intervals;

The embodiment of the application provides battery, unmanned aerial vehicle and electronic equipment, because heat conduction structure with the casing and a plurality of electricity core heat conductivity is connected, and each electricity core is roughly the same through the heat of heat conduction structure conduction to casing, makes the heat that each electricity core effluvium roughly the same to reduce the difference in temperature of each electricity core, guarantee that the temperature of each electricity core is roughly the same, and then reduce each electricity core because internal resistance difference and the voltage that the difference in temperature leads to are unbalanced, the life of balanced each electricity core, in order to guarantee that whole battery can normally work.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of an angle structure of a battery according to an embodiment of the present disclosure;

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

FIG. 3 is a schematic view of an angle structure of a battery according to an embodiment of the present disclosure;

FIG. 4 is an enlarged schematic view of a portion of the battery of FIG. 3 at A;

fig. 5 is a schematic structural diagram of a heat dissipation frame according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a battery provided in another embodiment of the present application;

fig. 7 is a schematic structural diagram of a battery provided in accordance with yet another embodiment of the present application;

fig. 8 is a schematic structural diagram of a battery provided in accordance with yet another embodiment of the present application;

fig. 9 is a schematic structural diagram of a battery according to still another embodiment of the present application;

fig. 10 is a schematic structural diagram of an unmanned aerial vehicle provided in an embodiment of the present application;

fig. 11 is a schematic diagram of an electronic device according to an embodiment of the present application.

Description of reference numerals:

100. a battery; 110. a housing; 111. a first side plate; 112. a second side plate; 113. a third side plate; 114. an accommodating cavity; 115. a bottom case; 120. an electric core; 121. a first electric core group; 122. a second electric core group; 130. a heat conducting structure; 131. a heat conducting frame; 1311. a first plate body; 1312. a second plate body; 1313. a third plate body; 140. a spacer section; 150. an air passage; 160. a heat conductive layer; 200. an unmanned aerial vehicle; 210. a body; 211. a battery cavity; 220. a propeller; 300. an electronic device; 310. a body; 311. and (5) a battery installation bin.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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

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

The inventor of the present application finds, through careful research, that the difference between the internal resistance and the voltage of each battery cell in a battery in an electronic device is large, so that the difference between the service lives of the battery cells is large. The battery core with the shortest service life often becomes the bottleneck of the whole power battery, and the normal use of the whole battery is influenced. One of the important reasons for the difference in the voltage and internal resistance of each cell is that the cells have different degrees of aging. And the thermal factor is one of the main factors of the cell aging. The heat dissipation effect of the external battery core is good, and the service life is long. And the internal battery cell has poor heat dissipation effect, serious capacity loss and short service life, so that the whole battery cell is difficult to work normally. Therefore, whether the heat dissipation of each battery cell is uniform or not greatly influences whether the service life of each battery cell is balanced or not.

To this discovery, the inventor of the present application has improved the battery structure to make each electric core dispel the heat roughly even, reduce the difference in temperature of each electric core, and then reduce each electric core because internal resistance difference and the voltage imbalance that the difference in temperature leads to, thereby the life of balanced each electric core. Specifically, the present application provides a battery comprising: a housing having thermal conductivity; the battery cores are arranged in the shell and are arranged at intervals; the heat conduction structure is arranged in the shell and is in heat conduction connection with the shell and the plurality of battery cells, so that the heat conducted from each battery cell to the shell through the heat conduction structure is approximately the same.

Example one

Referring to fig. 1 to fig. 5, the present embodiment provides a battery 100, which includes a casing 110, a battery cell 120, and a heat conducting structure 130.

Referring to fig. 1 and fig. 3, in order to more clearly describe the arrangement of the components, the stacking direction of the battery cells 120 is defined as the X direction. A direction perpendicular to the X direction, that is, a direction perpendicular to the stacking direction of the battery cells 120 is the Y direction.

The case 110 has thermal conductivity, so that heat conducted by the heat conducting structure 130 is dissipated to the outside of the battery 100, and the heat absorption time of the heat conducting structure 130 is prolonged.

Specifically, referring to fig. 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 disposed at intervals in the Y direction. The two third side plates 113 are disposed at intervals in the X direction. The first side plate 111 and the second side plate 112 are connected to the two third side plates 113 to form a receiving cavity 114 for receiving the battery cell 120 and the heat conducting structure 130.

In this embodiment, the first side plate 111 and the second side plate 112 both have thermal conductivity and are both thermally conductively connected to the heat conducting structure 130, so that the amount of heat conducted from each battery cell 120 to the housing 110 through the heat conducting structure 130 is substantially the same, the temperature difference of the battery cells 120 is reduced, and further, the internal resistance difference and the voltage imbalance of each battery cell 120 due to the temperature difference are reduced, and the service life of each battery cell is balanced.

In this embodiment, the material of the first side plate 111 and 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. Preferably, the first side plate 111 and the second side plate 112 are made of aluminum alloy, and the aluminum alloy has a high thermal conductivity, and when the battery cell 120 works, the aluminum alloy can dissipate a part of heat to the surrounding environment of the battery in the form of thermal radiation and/or convection, so that the heat storage load of the heat conducting structure 130 is reduced, and the heat absorption time of the heat conducting structure 130 is prolonged.

In one embodiment, the housing 110 may be a splice assembly. For example, the parts of the first side plate 111, the second side plate 112 and the two third side plates 113 are independent parts, and the casing 110 is formed by splicing the parts including the first side plate 111, the second side plate 112 and the two third side plates 113. The first side plate 111, the second side plate 112 and the third side plate 113 may be detachably connected or fixedly connected. The movable connection mode can be, for example, connection through a fastener structure, a screw or other connectors. The fixed connection may be, for example, by welding or the like.

It is 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 integrally formed, so as to save the assembly process of the housing 110 and improve the assembly efficiency of the battery 100; meanwhile, the sealing performance of the battery can be improved.

In the present embodiment, the specific shape of the housing 110 may be designed according to actual requirements, for example, the specific shape may include at least one of the following forms: the solid plate body, the hollow plate body, the plate body that has the mesh, the surface is cellular plate body, and the surface is concave-convex groove shaped plate body etc. can make each electric core 120 conduct the heat to casing 110 through heat conduction structure 130 roughly the same can.

Referring to fig. 1 to fig. 3, the number of the battery cells 120 is plural. The plurality of battery cells 120 may be connected in series, may be connected in parallel, or may be combined in series and parallel, and the voltage of the battery 100 is increased by series connection, and the capacity of the battery 100 is increased by parallel connection.

As can be appreciated, during operation of the cell 120, the cell 120 generates a large amount of heat. In order to prolong and equalize 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 dissipated quickly and evenly. In this embodiment, the heat generated by the battery cell 120 can be dissipated in at least two manners:

the first heat dissipation mode: the heat conducting structure 130, the housing of the battery cell 120, and the casing 110 form a heat dissipating structure, and the housing of the battery cell 120 is thermally conductively connected to the casing 110 through the heat conducting structure 130, so as to transfer heat in a heat exchanging manner, a heat radiation manner, and the like.

The second heat dissipation mode is as follows: each cell 120 is at least partially surrounded by air within the housing cavity 114. The air in the accommodating cavity 114 may exchange heat with the battery cells 120, the casing 110, and the heat conducting structure 130, so that heat can be conducted among the plurality of battery cells 120, between the battery cells 120 and the casing 110, between the heat conducting structure 130 and the casing 110, and between the battery cells 120 and the heat conducting structure 130 through the flowing air, thereby conducting out part of heat generated during the operation of the battery cells 120.

It should be noted that the manner of dissipating the heat generated by the battery cell 120 is not limited to the above two manners, and any manner capable of dissipating the heat generated by the battery cell 120 should fall within the protection scope of the present embodiment.

Referring to fig. 1 to 3, the plurality of battery cells 120 are arranged at intervals to form a plurality of air channels 150, so that the area of each battery cell 120 surrounded by air is larger, thereby improving the heat dissipation efficiency of each battery cell 120, reducing the temperature difference of each battery cell 120, further reducing the internal resistance difference and the voltage imbalance of each battery cell 120 caused by the temperature difference, and further balancing the service life of each battery cell 120.

Referring to fig. 1 and fig. 3, in an optional embodiment, two ends of each battery cell 120 in the X direction are respectively provided with a spacer 140, so that two adjacent battery cells 120 are arranged at intervals to form a plurality of air channels 150, and an area of each battery cell 120 surrounded by air is larger, thereby improving the heat dissipation efficiency of each battery cell 120 and reducing the temperature difference of each battery cell 120.

In an embodiment, the spacer 140 may be a filler, such as foam, glue, or tape, capable of preventing the battery cell 120 from shaking in the housing. On one hand, the filler can reduce the temperature difference of each battery cell 120, thereby reducing the internal resistance difference and the voltage imbalance of each battery cell 120 caused by the temperature difference, and further balancing the service life of each battery cell 120. On the other hand, even when the battery 100 vibrates in the using process, the filler can prevent the tab of the battery 100 from being deformed or broken due to the pulling force of the battery core 120, so as to ensure the use safety of the battery 100 and the unmanned aerial vehicle 200 and the electronic device 300 using the battery 100. It is understood that, in other embodiments, the spacer 140 may also be another spacer such as a heat conducting gasket, and two adjacent battery cells may be disposed at an interval.

Referring to fig. 1 to fig. 3 again, the plurality of battery cells 120 are stacked in two rows. The distance between adjacent cells 120 in each row of stacked cells 120 is substantially the same, so that the heat exchange between each cell 120 and the air is substantially the same, the temperature difference between each cell 120 is further reduced, and the service life of each cell 120 is balanced. Specifically, a plurality of electric cores 120 are double-row arrangement and are first electric core group 121 and second electric core group 122, and first electric core group 121 and second electric core group 122 all include at least two electric cores of arranging the setting along X direction range upon range of.

It can be understood that, one side of the electric core in the first electric core group 121 departing from the second electric core group 122 is connected with the casing 110 through the first partial area of the heat conducting structure 130, one side of the electric core in the second electric core group 122 departing from the first electric core group 121 is connected with the casing 110 through the second partial area of the heat conducting structure 130, so that the heat dissipation of each electric core 120 is uniform, the temperature difference of each electric core 120 is reduced, the internal resistance difference and the voltage imbalance caused by the temperature difference of each electric core 120 are reduced, and the service life of each electric core 120 is further balanced.

Referring to fig. 1 to fig. 5, the heat conducting structure 130 is accommodated in the accommodating cavity 114 and is in heat conducting connection with the housing 110 and the plurality of battery cells 120. In other words, the heat conducting structure 130 can conduct the heat generated by the operation of each battery cell 120 to the casing 110, and the conducted heat is substantially the same, so as to facilitate the uniform heat dissipation of each battery cell 120, and ensure the temperature uniformity of each battery cell 120, thereby effectively reducing the internal resistance difference and the voltage imbalance of each battery cell 120 caused by the temperature difference, and further ensuring that the service life of each battery cell 120 is substantially the same. Specifically, the heat conductive structure 130 includes a heat conductive frame 131. The arrangement mode of the heat conduction frame 131 can be designed according to actual requirements.

For example, in an alternative embodiment, the plurality of battery cells 120 share one heat conduction frame 131, and the contact area between each battery cell 120 and the heat conduction frame 131 is substantially the same, so that the amount of heat conducted from each battery cell 120 to the casing 110 through the heat conduction frame 131 is substantially the same, which facilitates uniform heat dissipation of each battery cell 120.

Referring to fig. 1 to 3, it can be understood that, in yet another alternative embodiment, each of the battery cells 120 may be separately provided with a corresponding heat conducting frame 131, so as to dissipate a portion of heat generated by the battery cells 120, reduce the temperature of the battery cells 120, and equalize the service life of each of the battery cells 120. The heat conducted from each cell 120 to the casing 110 through the corresponding heat conducting frame 131 is substantially the same, so as to avoid the mutual influence between the cells 110, and further facilitate the uniform heat dissipation of the cells 110.

Specifically, the contact area of the portion of each heat conducting frame 131, which is used for being in thermal conductive connection with the casing 110, is substantially the same as that of the casing 110, so that the heat quantity conducted from each battery cell 120 to the casing 110 through the heat conducting frame 131 is substantially the same, the heat conducting efficiency of each heat conducting frame 131 is substantially the same, the heat dissipation of each battery cell 120 is substantially the same, the temperature difference of each battery cell 120 is reduced, the temperature of each battery cell 120 is substantially the same, the internal resistance difference and the voltage imbalance of each battery cell 120 caused by the temperature difference are reduced, and the service life of each battery cell 120 is further.

Referring to fig. 5, the heat conductor 131 includes a first board 1311, a second board 1312, and a third board 1313.

The first plate 1311 is in thermal conductive contact with each of the battery cells 120, so that heat of each of the battery cells 120 is conducted to the first plate 1311. First plate 1311 is thermally conductively coupled to housing 110 via direct contact or indirect contact. Specifically, the first board 1311 has an abutting portion that abuts on the housing 110 to conduct heat of the first board 1311 to the housing 110.

In the present embodiment, the first board 1311 directly contacts the battery cell 120. The direct contact between the first plate 1311 and the battery cell 120 may be implemented in different manners according to actual needs, for example, multi-point contact, line contact, surface contact, and the like. Specifically, in this embodiment, the first plate 1311 is in surface contact with the battery cell, so as to increase the contact area between the battery cell 120 and the first plate 1311, and improve the heat dissipation efficiency of the battery cell 120.

As an alternative embodiment, the size of the first plate 1311 is adapted to the corresponding size of the battery cell 120, so that the first plate 1311 is in surface contact with the battery cell 120. Specifically, the size of the portion of the battery cell 120, which is used for contacting the first plate 1311, is substantially equal to the size of the first plate 1311, so that the third plate 1313 is in surface contact with the battery cell 120, thereby increasing the contact area between the battery cell 120 and the casing 110, and further improving the heat dissipation efficiency of the battery cell 120. The height of the first plate 1311 is equal to or lower than the height of the cell 120.

It is understood that, in other embodiments, the first plate 1311 may be thermally conductively connected to the battery cell 120 through indirect contact, for example, a heat transfer layer may be disposed between the first plate 1311 and the battery cell 120. The heat transfer layer can be made of a material with better heat conductivity, such as a heat-conducting silica gel layer, a heat-conducting silicone grease layer or a heat-conducting electroplating medium layer.

Referring to fig. 5 again, the second plate 1312 is bent and extended from one end of the first plate 1311, and is located between the corresponding battery cells 120 and the casing 110, and is connected to the corresponding battery cells 120 and the casing 110 in a heat conductive manner. Specifically, each battery cell in the first battery cell group 121 is connected with the first side plate 111 through the corresponding second plate body 1312 in a thermal conductive manner, and each battery cell in the second battery cell group 122 is connected with the second side plate 112 through the corresponding second plate body 1312 in a thermal conductive manner.

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 may be different according to actual requirements, such as multi-point contact, line contact, surface contact, etc. Specifically, in the embodiment, the second plate 1312 is in surface contact with the casing 110, so as to increase a contact area between the second plate 1312 and the casing 110 and improve the heat conduction efficiency of the heat conduction frame 131.

As an alternative embodiment, the size of the second plate 1312 is adapted to the corresponding size of the housing 110, so that the second plate 1312 is in surface contact with the housing 110. Specifically, the size of the portion of the first side plate 111 or the second side plate 112, which is used for contacting the second plate 1312, is substantially equal to the size of the second plate 1312, so as to increase the contact area between the casing 110 and the second plate 1312, improve the heat conduction efficiency of the heat conduction frame 131, and accelerate the heat dissipation speed of the battery cell 120.

It is understood that in other embodiments, second plate 1312 may also be thermally conductively coupled to housing 110 via indirect contact. For example, referring to fig. 4, a heat conduction layer 160 is disposed between the second plate 1312 and the casing 110, and heat of the second plate 1312 is conducted to the casing 110 through the heat conduction layer 160, so as to improve the heat conduction efficiency of the heat conduction frame 131, and further improve the heat dissipation efficiency of the battery cell 120. Specifically, the heat conducting layer 160 is disposed at a connecting portion between the second plate 1312 of each heat conducting frame 131 and the casing 110, so that the heat conducting efficiency of each heat conducting frame 131 is substantially the same, and it is further ensured that each battery cell 120 is substantially heated.

In this embodiment, an included angle between the second plate 1312 and the first plate 1311 may be designed to be an acute angle, an obtuse angle, or a right angle according to actual requirements, so that the first plate 1311 and the battery cell 120 and the second plate 1312 and the casing 110 can be in effective thermal conductive contact with each other.

Referring to fig. 1 to 3, the third plate 1313 is bent and extended from the other end of the first plate 1311, and the third plate 1313 is disposed opposite to the second plate 1312. Specifically, third plate 1313 and second plate 1312 are respectively bent and extended from two opposite ends of first plate 1311 toward the same side of first plate 1311.

As can be appreciated, the third plate 1313 is thermally conductively coupled to the corresponding cell 120. The third plate 1313 and the battery cell 120 may be in direct contact. The direct contact manner between the third plate 1313 and the battery cell 120 may be different according to actual requirements, for example, multi-point contact, line contact, surface contact, and the like. Specifically, in the present embodiment, the third plate 1313 is in surface contact with the battery cell 120, so as to increase a contact area between the battery cell 120 and the heat conducting frame 110, and improve the heat dissipation efficiency of the battery cell 120.

As an alternative embodiment, the portion of the heat conducting structure 130, which is used for contacting the battery cell 120, and the battery cell 120 are both disposed at an interval from the third side plate 113. That is, the electric core 120 and the first plate 1311 are both disposed at an interval with the casing 110, so that the heat conducted from the head and the tail of the two electric cores 120 in the electric core stacking direction to the casing 110 and the electric core 120 located at the middle part are substantially the same, the temperature difference of each electric core 120 is reduced, the internal resistance difference and the voltage imbalance of each electric core 120 caused by the temperature difference are reduced, and the service life of each electric core 120 is balanced. Specifically, each of the battery cells 120 and the first plate 1311 are disposed at an interval from the third side plate 113.

The included angle between the third plate 1313 and the first plate 1311 may be designed to be an acute angle, an obtuse angle or a right angle according to actual requirements, and it is sufficient to enable the third plate 1313 to be in effective thermal conductive contact with the battery cell 120. In the present embodiment, third plate 1313 is substantially orthogonal to first plate 1311.

In the present embodiment, the cross-section of the heat conduction frame 131 is U-shaped. In one embodiment, referring to fig. 1 and 3, the U-shaped openings of adjacent thermal frames 131 in the X direction face oppositely. Specifically, the two U-shaped heat conduction frames 131 are clamped outside the two battery cells 120, so that an air channel 150 is formed between the two battery cells 120 clamped between the two U-shaped heat conduction frames 131, and the air channel 150 can increase the heat dissipation efficiency of the two battery cells 120, thereby improving the heat dissipation efficiency of the battery cells 120.

In the present embodiment, the thickness of the plate body of the heat conducting frame 131 may be designed according to actual requirements. In one embodiment, the thickness of the plate body of the heat conduction frame 131 may be 0.03mm 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 numerical range bounded by any two of the foregoing values.

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

Referring to fig. 2, in an alternative embodiment, the casing 110 further includes a bottom case 115, and the heat conducting structure 130 and the battery cells 120 are disposed on the bottom case 115.

In one embodiment, the heat conducting structure 130 and the housing 110 may be separate components. The connection mode of the heat conduction frame 131 and the housing 110 may be designed according to actual requirements, such as a fastening mode of 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 by an adhesive layer. Preferably, the adhesive layer may also have a heat conducting function, that is, the heat conducting layer can fix the heat conducting frame 131 and the housing 110, and can conduct heat on the heat conducting frame 131 to the housing 110.

It is understood that in other embodiments, the heat conducting structure 130 and the housing 110 may be integrally formed, for example, the heat conducting structure 130 is directly formed on the housing 110, so as to reduce the steps of assembling the battery 100 and improve the efficiency of assembling the battery 100.

In the battery 100, heat generated from each of the battery cells 120 is radiated to the surrounding air by heat radiation, the air channels 150 in the receiving cavity 114 collect a large amount of heat, and the heat in the air channels 150 can be conducted to the heat conductive structure 130 and the case 110. In addition, the portion of the plurality of battery cells 120 for thermally conductive connection with the heat conducting structure 130 conducts heat to the heat conducting structure 130 through thermal conduction; the portion of the thermally conductive structure 130 that is configured to be thermally conductively coupled to the housing conducts heat to the housing 110 via thermal conduction. The airflow outside the casing 110 can take away heat through the surface of the casing 110, so as to increase the cooling speed of the battery 100 and achieve approximately the same temperature of each battery cell 120.

Example two

Referring to fig. 3, in the first embodiment, the U-shaped openings of adjacent thermal conduction frames 131 in the X direction face oppositely. Referring to fig. 6, the difference between the second embodiment and the first embodiment is only that in the second embodiment, the U-shaped openings of the adjacent heat conduction frames 131 in the X direction are oriented in the same direction.

EXAMPLE III

Referring to fig. 3 and 5, in the first embodiment, the heat conducting frame 131 includes a first board 1311, a second board 1312, and a third board 1313. The heat conduction frame 131 has a U-shaped cross section. Referring to fig. 7, the third embodiment differs from the first embodiment only in that the third plate 1313 is omitted, and the cross section of the heat conduction frame 131 is L-shaped.

Example four

Referring to fig. 7, in the third embodiment, the directions of the second boards 1312 extending from the ends of the corresponding first boards 1311 are opposite, i.e., the L-shaped openings of the heat conduction frame 131 face opposite directions. Referring to fig. 8, the difference between the fourth embodiment and the third embodiment is only that in the fourth embodiment, the L-shaped openings of the heat-conducting frames 131 are oriented in the same direction. In other words, in this embodiment, the second plate bodies 1312 of two adjacent heat conduction frames 131 in the X direction each extend along one end of the corresponding first plate body 1311 while being bent toward the positive direction in the X direction. The positive direction of the X direction is a direction indicated by an arrow in the figure.

EXAMPLE five

Referring to fig. 3, in the first embodiment, the plurality of battery cells 120 are stacked in two rows. The difference between the fifth embodiment and the first embodiment is only that, referring to fig. 9, in the fifth embodiment, 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 cells 120 are arranged in a single row in the X direction. Specifically, the plurality of battery cells 120 are stacked in a single row along the length direction or the width direction of the accommodating cavity 114.

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

In an embodiment, the second side plate 112 is thermally conductively connected to the heat conducting structure 130, so as to improve the heat dissipation efficiency of each battery cell 120, effectively reduce the temperature of the battery cell 120, and prolong the service life of the battery cell 120. Specifically, second plate 1312 and third plate 1313 of heat conducting structure 130 are both connected to housing 110 in a heat conducting manner. That is, the second plate 1312 is thermally conductively connected to the first side plate 111, and the third plate 1313 is thermally conductively connected to the second side plate 112.

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

It is understood that in other embodiments, the second side plate 112 may be made of a material having no thermal conductivity according to actual requirements, and the second side plate 112 is spaced apart from the thermal conductive structure 130.

It should be noted that the specific structure of the heat conducting structure 130 is not limited to the above-described structure, and may be designed according to actual requirements. For example, the plurality of battery cells 120 share one heat conduction frame 131, so that the heat conducted from each battery cell to the casing 110 through the heat conduction structure 130 may be substantially the same.

Similarly, the arrangement of the plurality of heat conducting frames 131 may also be arranged according to actual requirements, and is not limited to the arrangement described above, as long as it is ensured that the heat conducted from each electrical core 120 to the casing 110 through the heat conducting structure 130 is substantially the same. For example, when the cross section of the heat conduction frame 131 is U-shaped, and the number of the heat conduction frames 131 is at least three, the U-shaped openings of two heat conduction frames 131 face the same direction; the U-shaped openings of the other thermal conduction frames 131 are oriented in the same direction and opposite to the U-shaped openings of the two thermal conduction frames 131.

In addition, the arrangement of the battery cells 120 is not limited to the arrangement described above, and may be arranged according to actual requirements, for example, the plurality of battery cells 120 are arranged in three or more rows along the width direction (Y direction) or the length direction (X direction) of the accommodating cavity 114, as long as it is ensured that the heat conducted from each battery cell 120 to the housing 110 through the heat conducting structure 130 is substantially the same.

Referring to fig. 10, the present embodiment also provides a drone 200, where the drone 200 includes a body 210, a propeller 220, and a battery 100. The body 210 has a battery cavity 211. The battery 100 is disposed within the battery cavity 211. The external wind source can generate air convection, and the surface of the shell 110 can exchange heat with the air flow generated by the external wind source, so as to take away the heat on the surface of the shell 110.

It will be appreciated that in one embodiment, the source of convective air flow may be directly from the propeller 220, and the airflow generated by the propeller 220 is directed to the surface of the battery 100 through the air duct.

In another embodiment, the source of air convection may also come from a fan mounted within the fuselage 210 of the drone 200 or on the battery 100.

Referring to fig. 11, the present embodiment further provides an electronic device 300, which includes a body 310 and a battery 100. The body 310 has a battery mounting bin 311. The battery 100 is provided in the battery mounting compartment 311. The external wind source can generate air convection, and the surface of the shell 110 can exchange heat with the air flow generated by the external wind source, so as to take away the heat on the surface of the shell 110.

In the battery 100, the unmanned aerial vehicle 200, and the electronic apparatus 300 provided in the above embodiment, since the heat conducting structure 130 is in thermal conductive connection with the housing 110 and the plurality of battery cells 120, the heat conducted from each battery cell 120 to the housing 110 through the heat conducting structure 130 is substantially the same, so that the heat dissipated from each battery cell 120 is substantially the same, thereby reducing the temperature difference of each battery cell 120, ensuring that the temperature of each battery cell 120 is substantially the same, further reducing the internal resistance difference and the voltage imbalance of each battery cell 120 caused by the temperature difference, and further balancing the service life of each battery cell 120.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery, comprising:

a housing having thermal conductivity;

the battery cores are arranged in the shell and are arranged at intervals;

2. The battery of claim 1, wherein the thermally conductive structure comprises:

the heat conduction frame is matched with the number of the battery cells, and the battery cells are in heat conduction connection with the shell through the heat conduction frame so as to conduct heat generated by the battery cells.

3. The battery of claim 2, wherein the thermally conductive frame comprises:

the first plate body is contacted with the battery cell;

the second plate body is bent and extended from one end of the first plate body and is in heat-conducting connection with the shell.

4. The battery of claim 3, wherein the cell and the first plate are both spaced apart from the housing.

5. The battery of claim 3, wherein the thermally conductive frame further comprises:

and the third plate body is bent and extended from the other end of the first plate body, and the third plate body and the second plate body are oppositely arranged.

6. The battery of claim 5, wherein the heat conduction frame has a U-shaped cross section, and the U-shaped openings of adjacent heat conduction frames along the stacking direction of the battery cells are opposite.

7. The battery of claim 5, wherein the heat conduction frame has a U-shaped cross section, and the U-shaped openings of the adjacent heat conduction frames in the stacking direction of the battery cells are in the same direction.

8. The battery of claim 5, wherein the second plate body and the third plate body are both perpendicular to the first plate body.

9. The battery of claim 4, wherein the first plate body has dimensions that are adapted to correspond to dimensions of the cell such that the first plate body is in face contact with the cell.

10. The battery of claim 9, wherein the first plate has a height that is comparable to or lower than a height of the cell.

11. The battery of claim 2, wherein the housing is in direct or indirect contact with the thermally conductive frame.

12. The battery of claim 11, wherein the heat conducting structure is connected to the housing by a snap, an adhesive layer, or a screw lock.

13. The battery of claim 11, further comprising:

the heat conducting layer is arranged between the heat conducting frame and the shell so as to conduct the heat of the heat conducting frame to the shell.

14. The battery of claim 13, wherein the thermally conductive layer comprises a thermally conductive silicone layer, a thermally conductive silicone grease layer, or a thermally conductive plated dielectric layer.

15. The battery of any of claims 1-14, wherein the housing comprises:

the first side plate has thermal conductivity, and the thermal conductive structure is in thermal conductivity connection with the first side plate;

the second side plate is arranged at an interval with the first side plate;

the two third side plates are arranged at intervals along the stacking direction of the battery cells, the first side plate, the second side plate and the two third side plates are enclosed to form an accommodating cavity, and the battery cells and the heat conduction structures are accommodated in the accommodating cavity.

16. The battery of claim 15, wherein the portion of the thermally conductive structure configured to contact the cell and the cell are spaced apart from the second side plate and the third side plate.

17. The battery of 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.

18. The battery of claim 15, wherein the two first side plates, the second side plate, and the two second side plates and the third side plate are arranged separately.

19. The battery of any of claims 1-14, wherein each of the cells is in a single row stacked arrangement.

20. The battery of any one of claims 1-14, wherein each of the cells is stacked in two rows, and the first side plate and the second side plate are both thermally coupled to the thermally conductive structure.

21. An unmanned aerial vehicle, comprising:

a body having a battery cavity;

a battery disposed within the battery cavity, the battery comprising:

a housing having thermal conductivity;

the battery cores are arranged in the shell and are arranged at intervals;

22. The drone of claim 21, wherein the thermally conductive structure comprises:

23. The drone of claim 22, wherein the thermally conductive frame comprises:

the first plate body is contacted with the battery cell;

24. The unmanned aerial vehicle of claim 23, wherein the battery cell and the first plate are both spaced apart from the housing.

25. The drone of claim 23, wherein the thermally conductive frame further comprises:

26. The unmanned aerial vehicle of claim 25, wherein the heat conduction frames are U-shaped in cross section, and the U-shaped openings of adjacent heat conduction frames in the stacking direction of the battery cells are opposite.

27. The unmanned aerial vehicle of claim 25, wherein the heat conduction frame is U-shaped in cross section, and the U-shaped openings of adjacent heat conduction frames in the stacking direction of the battery cells are in the same direction.

28. The drone of claim 25, wherein the second plate and the third plate are both perpendicular to the first plate.

29. The drone of claim 24, wherein the first plate has dimensions that are adapted to correspond to dimensions of the cell such that the first plate is in face contact with the cell.

30. The drone of claim 29, wherein the first plate has a height comparable to or lower than a height of the cell.

31. The drone of claim 22, wherein the housing is in direct or indirect contact with the thermally conductive frame.

32. An unmanned aerial vehicle according to claim 31, wherein the heat conducting structure is connected to the housing by a snap, an adhesive layer, or a screw lock.

33. A drone as claimed in claim 31, wherein the battery further includes:

34. The unmanned aerial vehicle of claim 33, wherein the thermally conductive layer comprises a thermally conductive silicone layer, a thermally conductive silicone grease layer, or a thermally conductive plated dielectric layer.

35. A drone as claimed in any one of claims 21-34, wherein the housing includes:

the second side plate is arranged at an interval with the first side plate;

36. The drone of claim 35, wherein the portion of the thermally conductive structure configured to contact the cell and the cell are spaced apart from the second and third side panels.

37. The drone of claim 35, wherein the two first side panels, the second side panel, and the two second side panels, the third side panel are integrally formed.

38. The drone of claim 35, wherein the two first side panels, the second side panel, and the two second side panels and the third side panel are arranged separately.

39. The drone of any one of claims 21-34, wherein each of the cells is in a single row stacked arrangement.

40. The unmanned aerial vehicle of any one of claims 21-34, wherein each of the cells is in a double-row stacked arrangement, and the first side plate and the second side plate are both in thermally conductive connection with the thermally conductive structure.

41. An electronic device, comprising:

a body having a battery mounting compartment;

a housing having thermal conductivity;

the battery cores are arranged in the shell and are arranged at intervals;

42. The electronic device of claim 41, wherein the thermally conductive structure comprises:

43. The electronic device of claim 42, wherein the thermal frame comprises:

the first plate body is contacted with the battery cell;

44. The electronic device of claim 43, wherein the battery cell and the first plate are both spaced apart from the housing.

45. The electronic device of claim 43, wherein the thermal frame further comprises:

46. The electronic device of claim 45, wherein the heat-conducting frame has a U-shaped cross section, and the U-shaped openings of the adjacent heat-conducting frames along the stacking direction of the battery cells are opposite.

47. The electronic device of claim 45, wherein the heat-conducting frame has a U-shaped cross section, and the U-shaped openings of the adjacent heat-conducting frames in the stacking direction of the battery cells are in the same direction.

48. The electronic device of claim 45, wherein the second board body and the third board body are perpendicular to the first board body.

49. The electronic device of claim 44, wherein dimensions of the first board body are adapted to correspond to dimensions of the cell such that the first board body is in face contact with the cell.

50. The electronic device of claim 49, wherein the first plate body has a height that is equal to or lower than a height of the cell.

51. The electronic device of claim 42, wherein the housing is in direct contact or indirect contact with the thermally conductive frame.

52. The electronic device of claim 41, wherein the heat conducting structure is connected to the housing by a snap, an adhesive layer, or a screw lock.

53. The electronic device of claim 51, wherein the battery further comprises:

54. The electronic device of claim 53, wherein the thermally conductive layer comprises a thermally conductive silicone layer, a thermally conductive silicone grease layer, or a thermally conductive plated dielectric layer.

55. The electronic device of any one of claims 41-54, wherein the housing comprises:

the second side plate is arranged at an interval with the first side plate;

56. The electronic device of claim 55, wherein the portion of the thermally conductive structure that is configured to contact the cell and the cell are both spaced apart from the second and third side plates.

57. The battery of claim 55 wherein the two first side plates, the second side plate, and the two second side plates and the third side plate are integrally formed.

58. The electronic device of claim 55, wherein the two first side panels, the two second side panels, and the two second side panels and the three side panels are arranged separately.

59. The electronic device of any of claims 41-54, wherein each of the cells is arranged in a single row stack.

60. The electronic device of any one of claims 41-54, wherein each of the cells is stacked in two rows, and the first side plate and the second side plate are both thermally connected to the thermally conductive structure.