Disclosure of Invention
The application discloses battery and unmanned aerial vehicle to solve the high technical problem who influences battery working property of battery temperature.
According to an aspect of an embodiment of the present application, there is provided a battery, including a casing, a battery cell accommodated in the casing, and a cover covering the casing, wherein a heat dissipation air duct is formed between the battery cell and the casing, and an air inlet and an air outlet communicated with the heat dissipation air duct are provided on the cover;
a first air flow channel is arranged in the cover body, and the first air flow channel is arranged in a bent mode and is communicated with the air inlet and the heat dissipation air channel; and/or the presence of a gas in the gas,
and a second air flow channel is arranged in the cover body, and the second air flow channel is arranged in a bent manner and is communicated with the air outlet and the heat dissipation air duct.
According to two aspects of this application embodiment, this application provides an unmanned aerial vehicle, includes:
a frame including a central body and a plurality of arms coupled to the central body;
a plurality of rotor devices respectively mounted on the plurality of horn; each rotor wing device comprises a motor and a propeller arranged on the motor; and
the battery is arranged on the central body and comprises a shell, an electric core accommodated in the shell and a cover body covering the shell, a heat dissipation air channel is formed between the electric core and the shell, and an air inlet and an air outlet which are communicated with the heat dissipation air channel are formed in the cover body;
a first air flow channel is arranged in the cover body, and the first air flow channel is arranged in a bent mode and is communicated with the air inlet and the heat dissipation air channel; and/or the presence of a gas in the gas,
a second air flow channel is arranged in the cover body, and the second air flow channel is arranged in a bent mode and is communicated with the air outlet and the heat dissipation air duct;
the battery is located in the middle of a surrounding area of the rotor wing devices, and airflow generated by the rotor wing devices can enter from an air inlet of the battery and flow out from an air outlet of the battery.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
a heat dissipation air channel is formed between the battery core and the shell of the battery, a first air channel and a second air channel are arranged in the cover body, the first air channel is arranged in a bent mode and communicated with the air port and the heat dissipation air channel, the second air channel is arranged in a bent mode and communicated with the air outlet and the heat dissipation air channel, so that the heat dissipation air channel communicated with the outside is formed in the battery, heat in the battery is taken away through the battery core flowing through air flow, the working temperature of the battery is reduced, the working efficiency of the battery is improved, and the performance and the service life of the battery are improved. In addition, the first air flow channel and the second air flow channel are bent to play a role of water resistance for the battery.
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 only a part of the embodiments of the present application, and not all of the embodiments. 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.
The present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Referring to fig. 1 to 4, fig. 1 is a schematic view illustrating an angular structure of a battery according to an exemplary embodiment of the present disclosure; FIG. 2 is a schematic view of another angular configuration of a battery shown in an exemplary embodiment of the present application; FIG. 3 is an exploded view of a battery shown in an exemplary embodiment of the present application; fig. 4 is an angular cross-sectional schematic view of a battery shown in an exemplary embodiment of the present application. The battery 10 of the embodiment of the present application includes a case 1, a battery cell 2 accommodated in the case 1, and a cover 3 covering the case 1.
A heat dissipation air duct 11 is formed between the battery cell 2 and the casing 1, and the cover 3 is provided with an air inlet 31 and an air outlet 32 which are communicated with the heat dissipation air duct 11, so that air flows into the battery 10 from the air inlet 31 and flows to the air outlet 32 through the heat dissipation air duct 11, and heat in the battery 10 is taken out, thereby achieving heat dissipation of the battery 10. In addition, because the heat dissipation air duct 11 can dissipate heat for the battery 10 during use, the battery 10 can be charged after the battery 10 is stopped, and the battery 10 does not need to be cooled to the charge cutoff temperature.
In some embodiments, a first air flow channel 33 is formed in the cover 3, and the first air flow channel 33 is bent and connected to the air inlet 31 and the heat dissipation air duct 11. In other embodiments, a second air flow channel 35 is disposed in the cover 3, and the second air flow channel 35 is disposed in a bent manner and communicates with the air outlet 32 and the heat dissipation air duct 11. In the embodiment of the present application, the first air flow channel 33 is disposed in a bent manner and communicates with the air inlet 31 and the heat dissipation air duct 11, and the second air flow channel 35 is disposed in a bent manner and communicates with the air outlet 32 and the heat dissipation air duct 11, so that the first air flow channel 33 and the second air flow channel 35 are both disposed in a bent manner, thereby effectively preventing water from entering the battery 10.
As shown in fig. 1 to 6, the cover 3 is a box structure and is mounted on the top of the housing 1. The battery 10 of the present application further includes a control circuit board 363 disposed in the cover 3, where the control circuit board 363 is configured to manage and control the battery cell 2 of the battery 10 to perform charging and discharging. In some embodiments, the battery cell 2 is pre-assembled in the casing 1, and the control circuit board 363 is electrically connected to the battery cell 2 when the cover 3 covers the casing 1. In other embodiments, the battery cell 2 may also be pre-assembled on the cover 3 and electrically connected to the control circuit board 363, and then assembled in the housing 1.
Wherein, the cover 3 is provided with an air inlet 31 and an air outlet 32 towards one side of the casing 1. Since the cover 3 is installed on the top of the casing 1, and the air inlet 31 and the air outlet 32 are disposed on one side of the cover 3 facing the casing 1, that is, one side of the cover 3 facing the casing 1 is the lower side of the cover 3, both the air inlet 31 and the air outlet 32 face downward, so that water is not easy to flow into the cover 3. In the embodiment of the present application, the air inlet 31 and the air outlet 32 are disposed on one side of the cover 3 facing the housing 1, and the first airflow channel 33 and the second airflow channel 35 are disposed in a curved manner, so as to satisfy the condition that the battery 10 has a heat dissipation channel, and further play a role in waterproofing, thereby preventing water from entering the heat dissipation channel of the battery 10.
In some embodiments, as shown in fig. 3 to 8, the housing 1 has an opening, and a side of the cover 3 facing the housing 1 includes a covering surface 361 and a non-covering surface 362. The covering surface 361 covers the opening, and the air inlet 31 and the air outlet 32 are disposed on the non-covering surface 362. In this embodiment, the non-covering surface 362 is located at the periphery of the covering surface 361, and the air inlet 31 and the air outlet 32 are respectively disposed at two opposite sides of the housing 1. The air inlet 31 is a long strip-shaped opening in the longitudinal direction of the housing 1.
In some embodiments, as shown in fig. 3 and 4, the cover 3 includes an upper cover portion 37 and a lower cover portion 36 disposed opposite the upper cover portion 37. The control circuit board 363 is located in the accommodating space formed by the upper cover portion 37 and the lower cover portion 36, and the air inlet 31 and the air outlet 32 are opened in the lower cover portion 36. The upper cover portion 37 is provided with operation keys for controlling the battery 10, and functions of the operation keys include at least one of: the power switch controls and displays the residual capacity and the current temperature of the battery 10.
Further, as shown in fig. 3 to 6, a holding portion 34 is disposed on the cover 3, and the holding portion 34 is used for assisting a user to insert and remove the battery 10. In some embodiments, the gripping portion 34 is a gripping handle disposed on the cover 3, and the gripping handle is located on the non-covering surface 362 of the cover 3. The holding handle extends outward from one side of the cover 3 in the longitudinal direction, and the holding portion 34 includes a holding hole 341, and the holding hole 341 penetrates through the upper cover portion 37 and the lower cover portion 36 of the cover 3.
In this embodiment, the number of the air inlets 31 is two, and the two air inlets 31 are respectively disposed on two sides of the holding portion 34 in the length direction of the housing 1, that is, the two air inlets 31 are disposed on two sides of the holding hole 341. Two air inlets 31 are arranged on the cover body 3, so that the air inlet amount can be increased, and the heat dissipation efficiency is improved. In addition, the air inlets 31 are arranged on both sides of the holding portion 34 in the longitudinal direction of the housing 1, so that the space on the cover 3 can be effectively utilized by arranging the air inlets 31, and additional occupied space is not needed. Of course, in other embodiments, the air outlet 32 may be disposed beside the holding portion 34.
As shown in fig. 1 to 8, the first air flow channel 33 includes a first channel 331 and at least one second channel 332. The second passage 332 is communicated between the air inlet 31 and the first passage 331, and the first passage 331 is communicated with the heat dissipation air duct 11. The second channel 332 is used for guiding the airflow from the air inlet 31 to the first channel 331 and flowing from the first channel 331 to the heat dissipation duct 11. Wherein, the extending direction of the first channel 331 is parallel to the length direction of the housing 1. In this embodiment, the air inlet 31 and the air outlet 32 are respectively disposed on two opposite sides of the casing 1 in the width direction, so that the heat dissipation air duct 11 can cover the region of the battery cell 2 in the length direction of the casing 1, the overall size of the heat dissipation air duct 11 is increased, and the heat dissipation efficiency of the battery 10 can be improved.
In some embodiments, the second passages 332 include at least two, and at least two of the second passages 332 extend divergently toward the first passage 331. The second passage 332 includes a guide cavity having a trumpet shape, and the guide cavity communicates with the first passage 331 to guide the airflow flowing in from the air inlet 31 into the first passage 331. In the illustration of the application, the number of the second channels 332 is two, and the two second channels 332 extend in a trumpet shape to the first channel 331, so that the airflow can dispersedly flow into the first channel 331, and thus the airflow flowing into the first channel 331 can be relatively uniformly distributed, and further the airflow relatively uniformly flows into the heat dissipation air duct 11, which is beneficial to performing overall heat dissipation on the battery cell 2. In other embodiments, the second passage 332 may be plural, and the plural second passages 332 may be dispersed uniformly and extend toward the first passage 331.
The cross section of the first air flow channel 33 in the air flow direction is n-shaped, and the structural arrangement can effectively prevent water from entering. When the first air flow path 33 includes at least two second paths 332, each of the second paths 332 and the first path 331 has an n-shaped cross section in the air flow direction.
Referring to fig. 1 to 8 again, the casing 1 of the present application includes a bottom wall 12 and a side wall 13 enclosing a cavity in cooperation with the bottom wall 12, where the cavity is used to accommodate the battery cell 2. The side wall 13 and/or the bottom wall 12 are provided with a first matching portion 14, the battery cell 2 is provided with a second matching portion 21 matched with the first matching portion 14, and the battery cell 2 is mounted in the casing 1 through the assembly of the first matching portion 14 and the second matching portion 21. In some embodiments, the first matching portion 14 is a rib disposed on the casing 1, and the second matching portion 21 is a groove disposed on the battery cell 2. In other embodiments, the first matching portion 14 is a groove disposed on the casing 1, and the second matching portion 21 is a rib disposed on the battery cell 2. In the drawings of the present application, the first matching portion 14 is a rib disposed on the casing 1, and the second matching portion 21 is a groove disposed on the battery cell 2. Wherein the protruding height range of the ribs is 4mm-5 mm.
In some embodiments, at least one pair of opposing side walls 13 and bottom wall 12 are each provided with a first mating portion 14, and the first mating portion 14 on the bottom wall 12 is engaged with the first mating portion 14 on at least one pair of opposing side walls 13. When the battery cell 2 is installed in the casing 1, a gap is formed between the battery cell and the side wall 13 and the bottom wall 12 provided with the first matching portion 14, and the gap forms at least two spaced heat dissipation sub-air channels 110. In this embodiment, after the first matching portions 14 on the opposite side walls 13 and the bottom wall 12 are matched and assembled with the second matching portion 21 of the battery cell 2, the heat dissipation air duct 11 is divided into two spaced heat dissipation sub-air ducts 110.
In other embodiments, at least one pair of opposite side walls 13 and bottom wall 12 are respectively provided with a plurality of spaced first matching portions 14, and the battery cell 2 is provided with second matching portions 21 corresponding to the first matching portions 14 one to one. A plurality of first matching parts 14 are respectively arranged on the opposite side wall 13 and the bottom wall 12, and the first matching parts 14 are respectively matched and assembled with the second matching part 21 on the electric core 2 to divide the heat dissipation air duct 11 in the casing 1 into a plurality of heat dissipation sub-air ducts 110 with smaller size. Through setting up a plurality of heat dissipation sub-wind channels 110, can effectively guide the air current to flow along heat dissipation sub-wind channel 110 fast, avoid leading to the air current to cross talk because of heat dissipation wind channel 11 is too big to influence the outflow speed of air current.
In the embodiments, the heat-dissipating sub-air duct 110 is "U" -shaped, that is, the heat-dissipating sub-air duct 110 is divided into a plurality of smaller heat-dissipating sub-air ducts 110. Each of the sub-air channels 110 is respectively connected to the first air channel 33 and the second air channel 35, so that each of the sub-air channels 11 can independently dissipate heat.
Further, in order to accelerate the heat dissipation efficiency of the electrical core 2, heat dissipation fins are disposed on the electrical core 2 and located in the heat dissipation air duct 11. In addition, in order to further ensure the safety of the battery 10, the surface of the battery cell 2 is provided with a waterproof layer, thereby further improving the waterproof property of the battery 10.
In some embodiments, the heat dissipation air duct 11 includes a first air duct 111 and a second air duct 112 respectively formed between the two opposite side walls 13 and the battery cells 2, and a third air duct 113 formed between the bottom wall 12 and the battery cells 2. The first air duct 111 and the second air duct 112 are respectively communicated with the third air duct 113, the first air flow passage 33 is communicated with the first air duct 111, and the second air flow passage 35 is communicated with the second air duct 112. The whole radiating air duct is in a U shape, and the three air ducts can radiate heat for three sides of the battery 10. The first air duct 111 and the second air duct 112 are located on two sides of the electric core 2 in the length direction of the casing 1, and the third air duct 113 is located on the bottom surface of the electric core 2 in the length direction of the casing 1, so that the total area of the heat dissipation air duct 11 is maximized, which is beneficial to dissipating heat for the electric core 2 and improving the heat dissipation efficiency of the battery 10.
With reference to the above embodiment, when the first matching portions 14 and the second matching portions 21 on the electric core 2 are respectively matched and assembled to separate the heat dissipation air duct 11 in the casing 1 into a plurality of heat dissipation sub-air ducts 110 with small sizes, a plurality of first air ducts 111 and a plurality of second air ducts 112 are respectively formed between the two opposite side walls 13 and the electric core 2, and a plurality of third air ducts 113 are formed between the bottom wall 12 and the electric core 2, so as to divide the U-shaped heat dissipation air duct 11 into a plurality of heat dissipation sub-air ducts 110 arranged side by side.
In the opposite direction of the side wall 13 and the battery cell 2, the distance between the first air ducts 111 is 30mm to 40 mm. The distance between the second air ducts 112 in the opposite direction of the bottom wall 12 and the battery cell 2 is 30mm to 40 mm.
The heat dissipation air duct 11 is formed between the electric core 2 of the battery 10 and the shell 1 in the embodiment of the application, the first air flow channel 33 and the second air flow channel 35 are arranged in the cover body 3, the first air flow channel 33 is arranged in a bent mode and communicated with the air inlet 31 and the heat dissipation air duct 11, the second air flow channel 35 is arranged in a bent mode and communicated with the air outlet 32 and the heat dissipation air duct 11, so that the heat dissipation air duct 11 communicated with the outside is formed in the battery 10, heat in the battery 10 is taken away through the electric core 2 flowing through the air flow, the working temperature of the battery 10 is reduced, the working efficiency of the battery 10 is improved, and the performance and the service life of the battery 10 are improved. In addition, the bent arrangement of the first air flow channel 33 and the second air flow channel 35 also serves to prevent water from being applied to the battery 10.
As shown in fig. 9 and 10 in conjunction with fig. 1-8, in yet another aspect of an embodiment of the present application, there is also provided a drone 100, the drone 100 including a frame 20, a plurality of rotor devices 30, and a battery 10. This unmanned aerial vehicle 100 can be agricultural plant protection machine. The specific structure of the battery 10 is shown in the above embodiments, and will not be described herein. Of course, in other embodiments, the battery 10 may be applied to a new energy vehicle, a robot, and other mobile devices.
The rack 20 includes a hub 201 and a plurality of arms 202 coupled to the hub 201. The plurality of rotor apparatuses 30 are mounted on the plurality of horn 202, respectively. Each rotor apparatus 30 includes a motor 301 and a propeller 302 mounted on the motor 301. The cell 10 is mounted on the central body 201.
At present, agricultural plant protection machines generally have large loading capacity, so when working, the working current is very large, and because the battery has certain internal resistance, the agricultural plant protection machines can generate very high heat when working under the working condition of large current. When the battery temperature is high, the performance of the battery itself is degraded, and the battery life is affected by operating at a high temperature for a long time. And in actual operation, if the battery temperature is higher, the charger can not charge the battery.
Based on the above background, the heat dissipation air duct 11 is provided in the battery 10 of the present application, and the air inlet 31 and the air outlet 32 of the battery 10 are disposed downward, and the air flow generated by the plurality of rotor devices 30 can enter from the air inlet 31 of the battery 10 and flow out from the air outlet 32 of the battery 10, so as to dissipate heat for the battery 10. Meanwhile, the arrangement of the air inlet 31 and the air outlet 32 of the battery 10 facing downwards is beneficial to the waterproof arrangement of the battery 10. Furthermore, a first air flow channel 33 and a second air flow channel 35 are arranged in the cover 3, the first air flow channel 33 is bent and communicated with the air opening 31 and the heat dissipation air duct 11, the second air flow channel 35 is bent and communicated with the air outlet 32 and the heat dissipation air duct 11, and the first air flow channel 33 and the second air flow channel 35 are bent and communicated to achieve a waterproof effect for the battery 10.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The method and apparatus provided by the embodiments of the present application are described in detail above, and the principle and the embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments above is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.