Electrochemical device and unmanned aerial vehicle

Abstract

The application provides an electrochemical device for providing electric power, which comprises a shell, a circuit board and a battery module. The shell comprises a cover and a bottom shell, and the cover and the bottom shell form a receiving cavity. The circuit board is arranged in the receiving cavity and comprises a first electric connection part. The battery module is received in the receiving cavity and comprises a second electric connection part. A first fixing part is arranged on the inner side of the bottom shell, and the first fixing part fixes the first electric connection part and the second electric connection part. The application also relates to a drone using the electrochemical device. The use of the electrochemical device can reduce the short circuit caused by the friction of the internal structure due to vibration and extrusion.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to an electrochemical device and a drone. Background Technology

[0002] With the rapid development of mobile devices, the demand for longer battery life is increasing, requiring higher-quality batteries. In current batteries, the battery module, housed in the casing, is connected to the circuit board via power lines. However, these power lines are typically not secured. During use, external impacts can cause vibrations or compression within the battery structure. Increased vibration of the power lines can lead to wear on their outer casing, reducing safety. Furthermore, friction between internal components caused by vibration can potentially cause short circuits. Summary of the Invention

[0003] In view of this, it is necessary to provide an electrochemical device and a drone, which aims to strengthen the fixation of the connection wires between the battery module and the circuit board inside the electrochemical device, and reduce the short circuit caused by vibration and friction.

[0004] An electrochemical device for providing electricity includes a housing, a circuit board, and a battery module. The housing includes a bottom shell and a cover, which form a receiving cavity. The circuit board is disposed within the receiving cavity and includes a first electrical connection portion. The battery module is housed within the receiving cavity and includes a second electrical connection portion. A first fixing member is disposed inside the bottom shell, which fixes the first electrical connection portion and the second electrical connection portion.

[0005] In one possible implementation, the electrochemical device further includes a second fixing member connected to the first fixing member, which together with the first fixing member fixes the first electrical connection portion and the second electrical connection portion.

[0006] In one possible implementation, the cover has an opening, and the projections of the first fastener and the second fastener on the cover are at least partially located within the opening.

[0007] In one possible implementation, the first electrical connection portion is a first copper busbar with a first through hole or a first notch, or a second through hole or a second notch on the circuit board.

[0008] In one possible implementation, the second electrical connection portion is a second copper busbar having a third through hole or a third notch.

[0009] In one possible implementation, the first fastener is a stud that passes through the first electrical connection portion and the second electrical connection portion.

[0010] In one possible implementation, the first fastener is a metal component, and the first fastener electrically connects the first electrical connection portion and the second electrical connection portion.

[0011] In one possible implementation, the first electrical connection portion and the second electrical connection portion are connected.

[0012] In one possible implementation, the cover has a glue groove filled with glue, and the circuit board is disposed on the glue groove.

[0013] In one possible implementation, the cover further includes a gasket disposed at the opening location for sealing the opening.

[0014] In one possible implementation, a heat sink is provided on the bottom shell, which is used to dissipate heat from the battery module.

[0015] In one possible implementation, the bottom shell includes a first outer shell and a second outer shell, the first outer shell and the second outer shell are detachably connected, and the first outer shell and the second outer shell together house the battery module.

[0016] In one possible implementation, a screw and a fixing hole are provided between the first housing and the second housing, the screw being disposed in the fixing hole to fix the first housing and the second housing.

[0017] In one possible implementation, the first housing includes a first mounting bracket, the second housing includes a second mounting bracket, the heat sink is respectively disposed on the periphery of the first mounting bracket and the second mounting bracket, and thermally conductive adhesive is filled between the heat sink and the first mounting bracket and the second mounting bracket, the thermally conductive adhesive dissipating heat from the battery module.

[0018] In one possible implementation, a guide groove is provided on the first housing, the guide groove being used to guide the second electrical connection portion.

[0019] In one possible implementation, the first housing is further provided with the first fixing member, which is located at the edge of the guide groove.

[0020] In one possible implementation, the battery module further includes a plurality of battery cells, which are stacked together, and each battery cell is provided with a protective component to protect it.

[0021] In one possible implementation, the battery module further includes an adapter plate, a plurality of the battery cells are connected to the adapter plate, and the second electrical connection portion is disposed on the adapter plate.

[0022] An unmanned aerial vehicle (UAV) includes a body and an electrochemical device disposed within the body, the electrochemical device providing electrical energy to the body, wherein the electrochemical device is any of the electrochemical devices described above.

[0023] The electrochemical device provided in this application, by providing the first fixing member on the inner side of the bottom shell, connects the first electrical connection part and the second electrical connection part through the first fixing member, thereby fixing the first electrical connection part and the second electrical connection part, can effectively reduce the vibration, squeezing or friction of the first electrical connection part and the second electrical connection part, thereby preventing the electrochemical device from short-circuiting and improving its safety performance. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of an electrochemical device in one embodiment.

[0025] Figure 2 for Figure 1 The diagram shows a breakdown of the electrochemical device.

[0026] Figure 3 for Figure 2 Another exploded schematic diagram of the electrochemical device shown.

[0027] Figure 4 This is an exploded view of the cover and circuit board.

[0028] Figure 5 This is an exploded view of the first outer shell.

[0029] Figure 6 This is an exploded view of the second outer shell.

[0030] Figure 7 This is an exploded view of the battery module.

[0031] Figure 8 This is a three-dimensional schematic diagram of a drone in another embodiment.

[0032] Explanation of main component symbols

[0033] Electrochemical device 100

[0034] Casing 1

[0035] 10 caps

[0036] Cover 11

[0037] Containment Space 111

[0038] Glue tank 112

[0039] Fastener 113

[0040] Opening 114

[0041] First fixing part 115

[0042] First protruding end 116

[0043] Handle 12

[0044] Gasket 13

[0045] First foot pad 14

[0046] Buckle 15

[0047] Bottom shell 20

[0048] First fixed shell 21

[0049] First mounting bracket 211

[0050] Second protruding end 212

[0051] Reception port 2121

[0052] First guide groove 213

[0053] Second guide groove 214

[0054] First fastener 215

[0055] Second fastener 216

[0056] Second fixing parts 217, 223

[0057] First fixing hole 218

[0058] Second fixed shell 22

[0059] Second mounting bracket 221

[0060] Third guide groove 222

[0061] Second fixing hole 224

[0062] Heat sink 23

[0063] Steel sleeve 24

[0064] Screw 25

[0065] Nut 26

[0066] Second foot pad 27

[0067] Containment cavity A

[0068] Circuit Board 3

[0069] Plate 31

[0070] Sampling line 311

[0071] First electrical connection part 32

[0072] First connecting section 321

[0073] Second connecting section 322

[0074] First through hole 323

[0075] Charging terminal 33

[0076] Battery Module 4

[0077] Cell 41

[0078] JE411

[0079] Foam 42

[0080] Heat sink 43

[0081] Protective Case 44

[0082] Adapter board 45

[0083] Socket 451

[0084] Insulating component 452

[0085] Second electrical connection part 46

[0086] Third connecting section 461

[0087] Middle Section 462

[0088] Fourth connecting section 463

[0089] Third through hole 464

[0090] 200 drones

[0091] Body 5 Detailed Implementation

[0092] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0093] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0094] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0095] This application provides an electrochemical device for providing electricity. The electrochemical device includes a housing, a circuit board, and a battery module. The housing includes a bottom shell and a cover, which form a receiving cavity. The circuit board is disposed within the receiving cavity and includes a first electrical connection portion. The battery module is received within the receiving cavity and includes a second electrical connection portion. A first fixing member is disposed inside the bottom shell, and the first fixing member fixes the first electrical connection portion and the second electrical connection portion.

[0096] By employing the aforementioned electrochemical device, the first fixing member is disposed on the inner side of the bottom shell, and the first electrical connection part and the second electrical connection part are connected through the first fixing member, thereby fixing the first electrical connection part and the second electrical connection part and realizing the conduction between the battery module and the electrical connection module for power supply. Compared with the connection using a power line, this effectively reduces vibration, compression, or friction on the first electrical connection part and the second electrical connection part, thereby reducing wear on the outer casing and preventing short circuits in the electrochemical device.

[0097] The following will describe in detail some embodiments of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0098] Please see Figure 1 and Figure 2An electrochemical device 100 is disclosed for providing electricity. The electrochemical device 100 includes a housing 1, a circuit board 3, and a battery module 4. The housing 1 includes a cover 10 and a bottom shell 20, which form a receiving cavity A. The circuit board 3 is disposed within the receiving cavity A and includes a first electrical connection portion 32. The battery module 4 is received within the receiving cavity A and includes a second electrical connection portion 46. A first fixing member 215 is provided inside the bottom shell 20, which fixes the first electrical connection portion 32 and the second electrical connection portion 46.

[0099] Please see Figure 3 and Figure 4 The cover 10 includes a cover body 11, and a handle 12 is provided at the upper end of the cover body 11. The cover body 11 is disposed on the bottom shell 20, and the electrochemical device 100 can be moved or installed by pulling the handle 12.

[0100] The cover 11 is generally T-shaped. The cover 11 has a receiving space 111 at the lower end near the bottom shell 20. The circuit board 3 is disposed in the receiving space 111, and the upper end of the bottom shell 20 is received in the receiving space 111.

[0101] The cover 10 also includes a glue groove 112, which is located within the receiving space 111 and has a shape similar to that of the receiving space 111. The glue groove 112 is filled with glue, and the circuit board 3 is disposed on the glue groove 112. Furthermore, the circuit board 3 is fixed to the cover 11 by fasteners 113, which can be screws or connecting studs. The glue groove 112 is filled with sealant. After the circuit board 3 is fixed to the glue groove 112, the sealant further strengthens the fixation of the circuit board 3 and provides waterproofing and dustproofing, thus protecting the components on the circuit board 3.

[0102] The cover 11 has an opening 114, which communicates with the receiving space 111 and is located on the side of the glue groove 112.

[0103] In order to connect with the bottom shell 20, the cover 11 is also provided with a first fixing part 115. The first fixing part 115 is located at the corner of the cover 11 and is adapted to the bottom shell 20 to connect the cover 10 and the bottom shell 20.

[0104] It is understood that in other embodiments, the shape of the cover 11 is not limited to this. It can also be replaced with a rectangle, a circle, etc., depending on the device that houses the electrochemical device 100.

[0105] In one embodiment, to better seal the electrochemical device 100, the cover 10 further includes a gasket 13, which is disposed at the opening 114 to seal the opening 114 and prevent water or dust from entering the interior of the cover 10 through the opening 114. The gasket 13 can be disposed at the opening 114 using sealant or fixed at the opening 114 using fasteners such as fasteners 113. The gasket 13 can be a rubber gasket or a gasket made of the same material as the cover 11.

[0106] In this embodiment, two openings 114 are provided, and correspondingly, two gaskets 13 are also provided. It is understood that in other embodiments, the number of openings 114 and gaskets 13 is not limited to this.

[0107] In one embodiment, to better protect the cover 11, the cover further includes a first foot pad 14, which is fitted onto the corner of the cover 11. This first foot pad 14 protects the cover 11 from damage when it collides with an external structure. Additionally, when the cover 11 is connected to the bottom shell 20, the first foot pad 14 can engage with the bottom shell 20 to protect it as well. In this embodiment, the cover 10 includes four first foot pads 14, each first foot pad 14 located at a corner position.

[0108] It is understood that in other embodiments, the number of the first foot pads 14 is not limited to this.

[0109] In one embodiment, in order to connect with an external mechanism, the cover 10 further includes a latch 15, which is located at the end of the first protruding end 116 of the cover body 11, that is, at the lower end of the "T" shape. The latch 15 secures the electrochemical device 100 to the external mechanism.

[0110] Please see Figure 3The bottom shell 20 includes a first fixing shell 21 and a second fixing shell 22, which are detachably connected and together house the battery module 4. The first fixing shell 21 and the second fixing shell 22 are provided with heat dissipation components 23 to dissipate heat from the battery module 4 located within the bottom shell 20. The cover 10 is located at the upper end of the first fixing shell 21 and the second fixing shell 22 and is fixed to them. Furthermore, the area where the cover 10 contacts the first fixing shell 21 and the second fixing shell 22 is filled with sealant, which further secures the cover 10 to the first fixing shell 21 and the second fixing shell 22 and also provides waterproofing and dustproofing.

[0111] Please see Figure 3 and Figure 5 Specifically, the first fixed shell 21 includes a first mounting bracket 211, which is a hollow structure. The heat sink 23 is disposed around the periphery of the first mounting bracket 211, enclosing the first mounting bracket 211 to accommodate part of the battery module 4. Furthermore, the first mounting bracket 211 is provided with four heat sinks 23, which are respectively disposed on the front and rear sides, left side, and bottom of the first mounting bracket 211.

[0112] The first mounting bracket 211 is adapted to the contour of the cover 10 and has a second protruding end 212 adapted to the first protruding end 116 of the cover body 11. The second protruding end 212 has a receiving hole 2121.

[0113] In one embodiment, the first mounting bracket 211 has a first guide groove 213 on its upper end plate near the cover 10. The first guide groove 213 is located at the front and rear ends of the first mounting bracket 211 to guide the movement of the second electrical connection part 46 and allow the second electrical connection part 46 to extend out of the bottom shell 20.

[0114] In one embodiment, a second guide groove 214 is also provided at the middle position of the upper plate of the first mounting bracket 211.

[0115] The first mounting bracket 211 is provided with the first fixing member 215 near the first guide groove 213. By using the first fixing member 215, when installing the battery module 4, the first fixing member 215 can fix the first electrical connection part 32 and the second electrical connection part 46, which can avoid pulling or damage to the structure on the circuit board 3 and the internal structure of the battery module 4.

[0116] In one embodiment, the first fixing member 215 is a metal part. When the first fixing member 215 is fixedly connected to the first electrical connection part 32 and the second electrical connection part 46 respectively, the electrical conduction of the first electrical connection part 32 and the second electrical connection part 46 can be realized.

[0117] In another embodiment, the first fastener 215 may also be a plastic part.

[0118] Please see Figure 2 and Figure 5 In one specific embodiment, the first fixing member 215 is a fixing stud, which passes through the first electrical connection portion 32 and the second electrical connection portion 46. In this embodiment, the first fixing member 215 is pre-embedded in the first mounting bracket 211. It is understood that in other embodiments, the first fixing member 215 may also be integrally formed with the first mounting bracket 211.

[0119] Please see Figure 5 The electrochemical device further includes a second fixing member 216, which is connected to the first fixing member 215. If the first fixing member 215 is made of plastic, the second fixing member 216 is provided such that the first electrical connection portion 32 and the second electrical connection portion 46 are located between the first fixing member 215 and the second fixing member 216. The first fixing member 215 and the second fixing member 216 jointly fix the first electrical connection portion 32 and the second electrical connection portion 46, and the first electrical connection portion 32 and the second electrical connection portion 46 are connected.

[0120] In one embodiment, the first fixing member 215 is a stud, and the second fixing member 216 is a nut to cooperate with the first fixing member 215. It is understood that in other embodiments, the first fixing member 215 and the second fixing member 216 may also be replaced by other structures capable of fixing the first electrical connection part 32 and the second electrical connection part 46, such as a magnetic attraction structure that can attract each other.

[0121] Please see Figure 2 and Figure 5 Furthermore, the projections of the first fixing member 215 and the second fixing member 216 on the cover 10 are at least partially located within the opening 114. If the gasket 13 is removed from the opening 114, the second fixing member 216 located within the receiving cavity A can be adjusted from the position of the opening 114, thereby securing the first electrical connection 32 and the second electrical connection 46.

[0122] In one embodiment, in order to fix the first mounting bracket 211 to the cover 10, a second fixing part 217 adapted to the first fixing part 115 is also provided, so that the first mounting bracket 211 can better correspond to and fix the cover 10. Further, if the first fixing part 115 and the second fixing part 217 are both fixing posts with screw holes, the first fixing part 115 and the second fixing part 217 are connected by a long stud and a nut, thereby fixing the cover 10 and the first mounting bracket 211.

[0123] It is understood that in other embodiments, the first fixing part 115 and the second fixing part 217 are not limited to this. For example, if the first fixing part 115 is replaced with a stepped hole and the second fixing part 217 is a fixing post, the effect of fixing the cover 10 and the first mounting bracket 211 can also be achieved by using the cooperation of studs and nuts.

[0124] Please see Figure 2 and Figure 6 The second mounting housing 22 includes a second mounting bracket 221, which is a hollow structure. The heat sink 23 is disposed around the periphery of the second mounting bracket 221 to enclose it and accommodate another part of the battery module 4. Similar to the first mounting bracket 211, the second mounting bracket 221 also has four heat sinks 23, which are respectively disposed on the front and rear sides, right side, and bottom of the second mounting bracket 221.

[0125] The upper end of the second mounting bracket 221 and the first mounting bracket 211 is adapted to the contour of the cover 10 so that the cover 10 can be fixed to the bottom shell 20.

[0126] In one embodiment, a third guide groove 222 is provided at the middle position of the upper plate of the second mounting bracket 221. The third guide groove 222 communicates with the second guide groove 214, and part of the battery module 4 extends out from the second guide groove 214 and the third guide groove 222.

[0127] In one embodiment, the second mounting bracket 221 is also provided with a second fixing part 223 adapted to the first fixing part 115, so that the second mounting bracket 221 can better correspond to and fix the cover 10. The fixing method of the second fixing part 223 to the first fixing part 115 is the same as the fixing method of the second fixing part 217 of the first mounting bracket 211 to the first fixing part 115. Further details will not be provided here.

[0128] Please see Figure 5 and Figure 6 The heat sink 23 is embedded in the first mounting bracket 211 and the second mounting bracket 221, and is formed by integral injection molding. The heat sink 23 allows the battery module 4 located inside the bottom shell 20 to dissipate heat. Furthermore, the gap between the heat sink 23 and the first mounting bracket 211 and the second mounting bracket 221 is filled with thermally conductive adhesive. The heat sink 23 and the thermally conductive adhesive simultaneously dissipate heat from the battery module 4, improving heat dissipation efficiency. In addition, filling with thermally conductive adhesive increases the overall structural strength of the first mounting bracket 211 and the second mounting bracket 221.

[0129] In this embodiment, the heat sink 23 is a heat-dissipating aluminum plate. It is understood that in other embodiments, the heat sink 23 may also be made of aluminum alloy, magnesium-aluminum alloy, etc.

[0130] Please see Figure 5 and Figure 6 In one embodiment, to enable the first mounting shell 21 to be detachably connected to the second mounting shell 22, the bottom shell 20 further includes a steel sleeve 24, a screw 25, and a nut 26. Specifically, to install the steel sleeve 24 and the screw 25, a first fixing hole 218 is provided on the left side frame of the first mounting bracket 211, the steel sleeve 24 is disposed in the first fixing hole 218, one end of the screw 25 is fixed in the steel sleeve 24 and extends toward the second mounting shell 22. A second fixing hole 224 is provided on the right side frame of the second mounting bracket 221, the steel sleeve 24 is disposed in the second fixing hole 224, the other end of the screw 25 extends into the second fixing hole 224 and is fixed by the nut 26, thereby connecting the first mounting bracket 211 and the second mounting bracket 221. The contact area between the first mounting bracket 211 and the second mounting bracket 221 is filled with sealant to further fix the first mounting bracket 211 and the second mounting bracket 221, and also to prevent water and dust from entering.

[0131] In this embodiment, the first mounting bracket 211 is provided with four screws 25 for inserting into the second mounting bracket 221. The screws 25 have a guiding function and can also enhance the strength of the entire bottom shell 20. It is understood that in other embodiments, the first fixing shell 21 and the second fixing shell 22 can also be connected by other means, such as by a snap-fit ​​method, in which the first mounting bracket 211 is provided with a hook and the second mounting bracket 221 is provided with a fixing post, which can also fix the first fixing shell 21 and the second fixing shell 22.

[0132] In one embodiment, to protect the first fixing shell 21 and the second fixing shell 22, the bottom shell 20 further includes a second foot pad 27. The second foot pad 27 is disposed at the lower corner of the first fixing shell 21 and the second fixing shell 22 to prevent the first fixing shell 21 and the second fixing shell 22 from being damaged when subjected to external impact.

[0133] Please refer to the following: Figure 4 The circuit board 3 includes the first electrical connection part 32 and a board body 31, wherein the first electrical connection part 32 is connected to the board body 31.

[0134] The outline of the plate 31 is the same as that of the glue groove 112. The plate 31 is disposed on the glue groove 112 and fixed to the cover 11 by the fasteners 113 and the cover 11, and is further fixed with sealant to protect the components disposed on the plate 31. The plate 31 is also provided with sampling lines 311 to sample the precision of the plate 31, such as resistance and current.

[0135] In this embodiment, the board 31 is a Battery Management System (BMS) board. It is understood that in other embodiments, the board 31 may be replaced with other boards with equivalent functions or effects, such as a PCM board.

[0136] In this embodiment, the first electrical connection portion 32 is generally stepped and can be formed by bending a straight first electrical connection portion 32. In one embodiment, the first electrical connection portion 32 is a first copper busbar. It is understood that in other embodiments, the first electrical connection portion 32 may be replaced by other structures with equivalent functions or effects.

[0137] The first electrical connection portion 32 includes a first connection area 321 and a second connection area 322. The first connection area 321 is electrically connected to the plate 31 via surface mount technology. The second connection area 322 of the first electrical connection portion 32 is connected to the first fixing member 215, and a first through hole 323 is provided on the second connection area 322. The first fixing member 215 extends into the first through hole 323 to fix the first electrical connection portion 32.

[0138] It is understood that, in another embodiment, the first through hole 323 can be replaced by the first notch, and the first fastener 215 extends into the first notch, which can also serve to fix the first electrical connection part 32.

[0139] In other embodiments, the first electrical connection portion 32 may also be a second through hole or a second notch provided on the circuit board 3. Specifically, the first electrical connection portion 32 is a second through hole or a second notch formed on the plate body 31. A conductive contact is provided on the inner sidewall of the second through hole or the second notch. When the first fixing member 215 is a metal part, the conductive contact is electrically connected to the second electrical connection portion 46 through the first fixing member 215. Alternatively, a conductive contact is provided on the surface of the plate body 31 near the battery module 4 at a position corresponding to the second electrical connection portion 46. When the first fixing member 215 is a plastic part, the conductive contact is directly electrically connected to the second electrical connection portion 46.

[0140] The circuit board 3 also includes a charging terminal 33, which is located inside the receiving hole 2121 and electrically connected to the board body 31 so as to be electrically connected to an external mechanism to output the power of the electrochemical device 100.

[0141] Please see Figure 7 The battery module 4 includes a plurality of battery cells 41, which are stacked and adjacent cells 41 are fixed together with adhesive. Specifically, the plurality of battery cells 41 are arranged in two rows. Each battery cell 41 is provided with a tab 411. The connection method between the tab 411 and the battery cell 41 is existing technology and will not be described in detail here.

[0142] In one embodiment, to protect the battery cell 41, the battery module 4 further includes a protective component, which is disposed at the upper and lower ends of the battery cell 41, and is also disposed at the position of the tab 411. Further, in this embodiment, the protective component is foam 42. The foam 42 can mitigate external impacts on the battery cell 41, thereby protecting the battery cell 41.

[0143] It is understood that in other embodiments, the protective component may be replaced with other structures that have equivalent effects or functions. For example, it may also be replaced with elastic rubber.

[0144] In one embodiment, to better dissipate heat from the battery cell 41, the battery module 4 further includes a heat sink 43 disposed on the surface of the battery cell 41. Further, the heat sink 43 is a heat-dissipating aluminum plate. It is understood that the heat sink 43 is not limited to this.

[0145] In one embodiment, the battery module 4 further includes a protective shell 44, which is generally hollow and without a top cover. A plurality of battery cells 41 are housed within the protective shell 44. The volume of the protective shell 44 is approximately the same as the volume of the plurality of battery cells 41 to prevent the battery cells 41 from moving within the protective shell 44. Furthermore, the protective shell 44 is made of epoxy resin board, which provides good insulation and prevents deformation.

[0146] The battery module 4 also includes an adapter plate 45, which is located at the upper end of the battery cell 41 and connected to the tab 411 via a nickel strip (not shown). A socket 451 is located approximately in the middle of the adapter plate 45 and is soldered to it. The socket 451 extends out of the bottom shell 20 from the second guide groove 214 and the third guide groove 222. The sampling output of the adapter plate 45 is achieved through the socket 451. The socket 451 facilitates the maintenance of the adapter plate 45; if the socket 451 malfunctions, the entire adapter plate 45 does not need to be replaced, reducing maintenance costs.

[0147] The adapter plate 45 is also provided with an insulating element 452, the outline of which is adapted to the adapter plate 45 to prevent leakage of current. Furthermore, the insulating element 452 is insulating paper. It is understood that in other embodiments, the insulating element 452 can be replaced with an insulating gasket.

[0148] The second electrical connection portion 46 is welded to the adapter plate 45. Further, the second electrical connection portion 46 is a second copper busbar. It is understood that in other embodiments, the second electrical connection portion 46 may be replaced with other structures having equivalent functions or effects.

[0149] The second electrical connection portion 46 includes a third connection portion 461, an intermediate portion 462, and a fourth connection portion 463, which generally form a "U" shaped structure.

[0150] The third connecting section 461 is welded to the adapter plate 45. The middle section 462 is relatively soft and can be bent. When the third connecting section 461 is welded to the adapter plate 45, the middle section 462 can be bent to avoid the laser direction. Simultaneously, when installed with the first electrical connection section 32, the bending of the middle section 462 can reduce pressure caused by manufacturing and installation errors. The fourth connecting section 463 has a third through hole 464, and the first fixing member 215 can be secured in the third through hole 464. In one embodiment, the third through hole 464 is an unclosed through hole, which makes assembling the battery module 4 and the outer casing 1 more convenient.

[0151] In another embodiment, the third through hole 464 can be replaced by a third notch, and the first fastener 215 can also be secured in the third notch.

[0152] Please see Figure 3 and Figure 4 When fixing the first electrical connection part 32 and the second electrical connection part 46, the first fixing member 215 passes through the third through hole 464 and the first through hole 323, and then the two are fixed by the second fixing member 216.

[0153] In this embodiment, the battery module 4 includes two second electrical connection portions 46, which serve as the overall positive and negative terminals of the battery cell 41, respectively. Using copper busbars for connection provides better fixation compared to using power lines. It also reduces the difficulty of laser welding and avoids pulling on the tabs 411.

[0154] Please refer to the following: Figure 3 During the assembly of the electrochemical device 100, the first fixing shell 21 and the second fixing shell 22 are disposed on the outside of the battery module 4 and fixed by plugging them in. The second electrical connection portion 46 moves along the first guide groove 213, such that the middle section 462 is located in the first guide groove 213, and the fourth connection section 463 is located outside the bottom shell 20 and is secured to the first fixing member 215.

[0155] The cap 10 is inserted into the bottom shell 20, and the second connection area 322 of the first electrical connection part 32 is fixed to the first fixing member 215. The second fixing member 216 can be locked through the opening 114, thereby fixing the first electrical connection part 32 and the second electrical connection part 46. Finally, the gasket 13 is placed at the opening 114 and sealed.

[0156] Please see Figure 8In another embodiment, this application also provides a drone 200, which includes a body 5 and an electrochemical device 100 disposed within the body 5. The electrochemical device 100 provides electricity to the body 5 and is fixed to the body 5 by means of the buckle 15. The electrochemical device 100 is the same as the electrochemical device 100 described in any of the above embodiments, and will not be described again here.

[0157] In summary, the embodiments of this application provide an electrochemical device 100 and a drone 200 employing the electrochemical device. The electrochemical device 100, by providing the first fixing member 215 on the inner side of the bottom shell 20, connects the first electrical connection portion 32 and the second electrical connection portion 46, thereby restricting the movement of the first electrical connection portion 32 and the second electrical connection portion 46. Furthermore, by inserting the second fixing member 216 into the receiving cavity A from the opening 114 position to fix the first electrical connection portion 32 and the second electrical connection portion 46, the fixing effect is strengthened, reducing the occurrence of vibration, compression, or friction of the first electrical connection portion 32 and the second electrical connection portion 46, eliminating wear of the first electrical connection portion 32 and the second electrical connection portion 46, and further preventing short circuits in the electrochemical device 100.

[0158] The first electrical connection 32 and the second electrical connection 46 are secured using studs and nuts, reducing assembly costs and simplifying the assembly process. If only the first fixing member 215 is used to secure the first electrical connection 32 and the second electrical connection 46, the second fixing member may not be necessary. Furthermore, by providing the adhesive groove 112 and applying sealant between the cover 10 and the bottom shell 20, the electrochemical device 100 can be effectively waterproofed and dustproofed, achieving an IP67 waterproof and dustproof rating. By embedding the heat sink 23 into the first mounting bracket 211 and the second mounting bracket 221 and filling it with thermally conductive adhesive, the heat dissipation efficiency of the electrochemical device 100 is improved.

[0159] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of disclosure claimed in this application.

Claims

1. An electrochemical device for providing electrical power, characterized by, The electrochemical device comprises: a housing comprising a bottom shell and a cover, the bottom shell and the cover forming a receiving cavity, the bottom shell comprising a first fixed shell and a second fixed shell; a circuit board arranged in the receiving cavity, the circuit board comprising a board body and a first electrical connection part; the first electrical connection part comprising a first connection region and a second connection region, the first connection region being connected to the board body, the second connection region being provided with a first through hole or a first notch; the circuit board being fixed to the cover body of the cover through a fastener, or the cover being provided with a glue groove, the glue groove being filled with glue, and the circuit board being arranged on the glue groove; a battery module received in the receiving cavity, the battery module comprising a second electrical connection part, the battery module comprising a plurality of battery cells, and the plurality of battery cells being received in the bottom shell; the battery module comprising a conversion board arranged in the bottom shell, and the plurality of battery cells being connected to the conversion board; the second electrical connection part comprising a third connection region, an intermediate region and a fourth connection region, the intermediate region connecting the third connection region and the fourth connection region, the third connection region being welded to the conversion board and being arranged in the bottom shell, the fourth connection region being arranged outside the bottom shell and above the third connection region, and the fourth connection region being provided with a third through hole or a third notch; a first fixing member arranged on the inner side of the bottom shell; the first fixing member penetrating the third through hole and the first through hole and being fixed by a second fixing member, or the first fixing member penetrating the third notch and the first notch and being fixed by a second fixing member; an opening being arranged on the cover, and a projection of the first fixing member and the second fixing member on the cover being at least partially arranged in the opening.

2. The electrochemical device of claim 1, wherein, The electrochemical device further comprises a second fixing member connected to the first fixing member, and used for fixing the first electrical connection part and the second electrical connection part together with the first fixing member.

3. The electrochemical device of claim 1, wherein The first electrical connection part is a first copper bar provided with a first through hole or a first notch, or a second through hole or a second notch arranged on the circuit board.

4. The electrochemical device of claim 1, wherein The second electrical connection part is a second copper bar provided with a third through hole or a third notch.

5. The electrochemical device of claim 1, wherein The first fixing member is a threaded stud, and the threaded stud penetrates the first electrical connection part and the second electrical connection part.

6. The electrochemical device of claim 1, wherein, The first fixing member is a metal member, and the first fixing member electrically connects the first electrical connection part and the second electrical connection part.

7. The electrochemical device of claim 1, wherein The first electrical connection part and the second electrical connection part are connected.

8. The electrochemical device of claim 1, wherein, The cover further comprises a gasket arranged at the position of the opening, and used for sealing the opening.

9. The electrochemical device of claim 1, wherein, The bottom shell is provided with a heat dissipation member, and the heat dissipation member is used for dissipating heat of the battery module.

10. The electrochemical device of claim 9, wherein, The first fixed shell and the second fixed shell are detachably connected, and the first fixed shell and the second fixed shell jointly receive the battery module.

11. The electrochemical device of claim 10, wherein, A screw and a fixing hole are arranged between the first fixed shell and the second fixed shell, and the screw is arranged in the fixing hole to fix the first fixed shell and the second fixed shell.

12. The electrochemical device of claim 10, wherein, The first fixed shell comprises a first mounting rack, the second fixed shell comprises a second mounting rack, the heat dissipation pieces are respectively arranged on the circumferential sides of the first mounting rack and the second mounting rack, and the heat dissipation pieces and the first mounting rack and the second mounting rack are filled with heat-conducting glue, which dissipates heat for the battery module.

13. The electrochemical device of claim 10, wherein A guide groove is arranged on the first fixed shell, and the guide groove is used for guiding the second electric connection part.

14. The electrochemical device of claim 13, wherein, The first fixed shell is provided with the first fixing part, and the first fixing part is located at the edge of the guide groove.

15. The electrochemical device of claim 1, wherein, A plurality of the battery cells are stacked, and the battery cells are provided with protection parts to protect the battery cells.

16. A drone, comprising: The unmanned aerial vehicle comprises a body and an electrochemical device arranged in the body, the electrochemical device provides electric quantity for the body, and the electrochemical device is the electrochemical device according to any one of claims 1 to 15.

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