CN218548648U

CN218548648U - Mobile operation equipment

Info

Publication number: CN218548648U
Application number: CN202222467773.3U
Authority: CN
Inventors: 王志立; 崔豫川; 邵阳
Original assignee: Suzhou Eavision Robotic Technologies Co Ltd
Current assignee: Suzhou Eavision Robotic Technologies Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-28
Anticipated expiration: 2032-09-19

Abstract

The utility model provides a remove operation equipment, include: the mobile assembly is provided with a power mechanism, and the liquid storage box and the battery module are embedded in the mobile assembly; the battery module is including the casing module of utensil electric core, the casing module includes that at least two parallel arrangement accept the casing in order to form a plurality of clearances of arranging for the air flow along mobile operation equipment moving direction, the liquid reserve tank forms the fretwork portion that the air runs through to make and flow through the air in clearance link up in mobile operation equipment moving direction. Through this application, rationally reduced the volume of battery module when guaranteeing that battery module has great energy density, still realized cooling the produced heat of electric core when operating condition in the battery module to ensure the security of battery module, life, and improved the time of endurance of mobile operation equipment.

Description

Mobile operation equipment

Technical Field

The utility model relates to an energy storage equipment technical field, more specifically relate to a remove operation equipment.

Background

A battery pack for supplying power to the power mechanism is generally provided in the mobile working device. The Battery pack is electrically connected with a plurality of sheet-shaped Battery cores, supplies power to the power mechanism under the control of a Battery Management System (BMS), and performs control such as heat Management, charge and discharge Management, battery core abnormity and fault monitoring and alarming, voltage monitoring and the like on the Battery cores. Because the size of mobile operation equipment such as an unmanned aerial vehicle, an unmanned vehicle, a sweeping robot, an electric golf cart and the like is small and has a strict requirement on endurance, more battery cells are often required to be accommodated in a relatively small space. Meanwhile, the mobile operation equipment does not allow the heat dissipation fins to be exposed due to the objective factors such as design and use limitation, so that the whole battery pack has the technical problem of poor heat dissipation along with the increase of the number of the battery cells, and the battery pack has the defects of short endurance time, short service life, poor safety and the like.

In order to solve the problem that the heat dissipation of the battery cells contained in a plurality of battery packs is not good in the working state, the prior art discloses a technical means for forming flowing airflow by adopting an active fan to dissipate heat of the battery cells, but the prior art has the factors that the battery pack with the built-in fan is too large in volume and complex in structure, so that the battery pack is not suitable for mobile operation equipment such as an unmanned aerial vehicle with harsh requirements on weight and volume. Simultaneously, also there is the technical scheme of a plurality of electric cores of shell parcel by metal or plastics make in order to constitute the battery package among the prior art, processes out the through-hole that supplies circulation of air and arranges a plurality of electric core intervals at the lateral part and the bottom of shell to fill the fin or fill buffer material and take place the vibration in order to reduce electric core between two electric cores. However, in the prior art, the battery cell needs to be accommodated in the housing communicated with the external environment, so that impurities in the external environment can enter the housing from the side surface of the housing and the through hole formed on the ground, and the insulation property is reduced after long-term use; the through holes formed by densely processing the shell not only can reduce the overall structural strength of the shell, but also can increase the manufacturing cost of the shell; and the filling of the heat sink or the filling of the buffer material further prevents the air from carrying the heat effect during the flow between the cells. As can be seen, the mobile working apparatus in the prior art has the above-mentioned drawbacks.

In view of the above, there is a need for an improved mobile working apparatus in the prior art to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to disclose a mobile operation equipment for solve aforementioned technical defect, especially cool down in order to realize the produced heat of electric core in the battery module when operating condition, guarantee battery module's security, life, and improve mobile operation equipment's time of endurance.

To achieve the above object, the present application provides a mobile working apparatus including:

the mobile component is provided with a power mechanism, and a liquid storage tank and a battery module are embedded in the mobile component;

the battery module comprises a shell module with an electric core, the shell module comprises at least two accommodating shells which are arranged in parallel to form a plurality of gaps which are arranged along the moving direction of the mobile operation equipment and used for air to flow, and the liquid storage tank forms a hollow part through which air penetrates, so that the air flowing through the gaps is communicated in the moving direction of the mobile operation equipment.

As a further improvement of the utility model, the width of the gap formed between the adjacent containing shells is 3-5 mm.

As a further improvement of the present invention, the fixing portion is formed at the top of the housing module, or the fixing portion is formed at the bottom of the housing module, or the fixing portion is formed at the top and the bottom of the housing module at the same time.

As a further improvement of the utility model, accept the casing and form and supply electric core along vertical direction male inserted hole, adjacent accept the casing and be monolithic structure, perhaps, adjacent accept the casing and be split type structure.

As a further improvement of the present invention, the insertion hole is formed in one end portion or both end portions of the accommodating case in the vertical direction.

As a further improvement of the present invention, the plurality of accommodating cases are transversely arranged and formed with a gap width tapering from inside to outside, or the plurality of accommodating cases are transversely arranged and formed with a gap width equal from inside to outside.

As a further improvement of the present invention, the adjacent end face of the accommodating case is flush along the gap extending direction, or the adjacent end face of the accommodating case forms alternate dislocation along the gap extending direction.

As a further improvement of the present invention, the cross section of the hollow portion formed along the moving direction of the mobile operation device covers the end face of the adjacent accommodating case.

As a further improvement of the present invention, the fixing portion includes an upper fixing portion formed at the top of the housing module, and a lower fixing portion formed at the bottom of the housing module; the upper fixing portion and the lower fixing portion clamp the shell module and are connected through the shell module.

As a further improvement, the fixed part forms a plurality of mutual isolations and the part extends into the locking portion of accommodating the casing down to the casing is accepted along the perpendicular to in the restriction it inserts the in-plane removal at grafting direction place that locking portion formed to accommodate the casing, perhaps, the fixed part forms a plurality of confessions down accommodate the casing and insert and the mutual isolation's accepting groove, with the restriction accommodate the casing along the perpendicular to it inserts the in-plane removal at grafting direction place that the accepting groove formed to accommodate the casing.

Compared with the prior art, the beneficial effects of the utility model are that:

the shell module comprises at least two accommodating shells which are arranged in parallel to form a plurality of gaps which are arranged along the moving direction of the mobile operation equipment and used for air to flow, the liquid storage tank forms a hollow-out part through which air penetrates, so that the air flowing through the gaps is communicated in the moving direction of the mobile operation equipment, the resistance of the air flowing through the gaps is reduced, and in the moving process of the mobile operation equipment, the air flows through two sides of the accommodating shells to realize passive air-cooled heat dissipation in the moving operation process or realize active heat dissipation in the static state of the mobile operation equipment; simultaneously, the volume of the battery module is reasonably reduced while the battery module is ensured to have larger energy density, and the heat generated by the electric core in the battery module in the working state is cooled, so that the safety and the service life of the battery module are ensured, and the endurance time of the mobile operation equipment is prolonged.

Drawings

Fig. 1 is an exploded view of a mobile working apparatus according to the present invention;

fig. 2 is a perspective view of a tank in the mobile working apparatus shown in fig. 1;

fig. 3 is a schematic view of passive air-cooling during movement of the mobile working equipment shown in fig. 1 in a first direction;

fig. 4 is a perspective view of a battery module included in the mobile operation device in a viewing angle;

fig. 5 is a perspective view of a battery module included in the mobile operation device from another perspective view;

FIG. 6 is an enlarged view of a portion of FIG. 5 taken at circle A;

FIG. 7 is an enlarged view of a portion of FIG. 5 taken at circle B;

fig. 8 is a perspective view of a base (i.e., a lower concept of a lower fixing portion) of the battery module included in the mobile operation apparatus according to an embodiment;

fig. 9 is a sectional view taken along the direction K-K parallel to the horizontal plane in fig. 4, in which fig. 9 omits to show the buffer heat conductive layer;

fig. 10 is an exploded view of the battery module shown in fig. 4 in a vertical direction;

fig. 11 is an exploded view of the battery module in a vertical direction;

fig. 12 is a perspective view of a housing case of a battery module without a battery cell;

FIG. 13 is a schematic view of FIG. 9 with the lower fixing portions and the buffer heat conductive layer omitted;

fig. 14 is a schematic view of a plurality of accommodating cases arranged transversely and tapered from inside to outside, wherein fig. 14 omits to show the buffer heat conduction layer;

fig. 15 is a schematic view of a plurality of receiving housings arranged transversely and with equal gaps but arranged in a staggered manner between adjacent receiving housings, wherein fig. 15 omits to show the buffer heat conduction layer;

fig. 16 is a schematic view of an embodiment in which the upper fixing portion and the lower fixing portion clamp the housing module in a vertical direction, wherein a gap formed between adjacent housing housings partially extends into the upper fixing portion and the lower fixing portion in the vertical direction;

fig. 17 is a schematic view of the upper fixing portion and the lower fixing portion clamping the housing module in the vertical direction in an embodiment, wherein the accommodating housing partially extends into the upper fixing portion and the lower fixing portion in the vertical direction but the gap does not extend into the upper fixing portion and the lower fixing portion in the vertical direction;

fig. 18 is a schematic view illustrating an embodiment of the upper fixing portion and the lower fixing portion clamping the housing module in a vertical direction, wherein a gap formed between adjacent housing housings does not extend into the upper fixing portion and the lower fixing portion in the vertical direction;

FIG. 19 is a schematic view of an embodiment of a housing and a lower fastening portion clamping a housing module in a vertical direction, wherein the lower fastening portion forms a plurality of locking portions that are isolated from each other and partially extend into the housing;

fig. 20 is a temperature change curve diagram obtained by cooling the battery module by using a fan to perform active air cooling on the battery module at the same set temperature between the battery cell accommodated in the innermost accommodating case in the battery module shown in fig. 4 and the battery cell accommodated in the innermost accommodating case in the battery module without a gap in the prior art;

fig. 21 is a graph showing temperature changes when a rapid charge is performed at a gap width of 0mm, 1mm, 2mm, 3mm, 4mm, or 5mm, which is formed between a plurality of receiving cases included in the battery module shown in fig. 4 and has the same width;

fig. 22 is a temperature change curve diagram obtained by carrying out passive air cooling at the same set temperature between the battery cell accommodated in the innermost accommodating casing of the battery module shown in fig. 4 and the battery cell accommodated in the innermost accommodating casing of the battery module without a gap in the prior art, and keeping the flying speed of 5 m/s while the battery cell is mounted on an unmanned aerial vehicle (i.e., a lower concept of mobile operation equipment);

fig. 23 is a perspective view of an active heat sink.

Detailed Description

The present invention will be described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and that the functional equivalents, methods, or structural equivalents thereof, or substitutions thereof by those skilled in the art are all within the scope of the present invention.

Fig. 1 to 13, 16, and 20 to 23 show a specific embodiment of a mobile working device according to the present invention. The battery module 100 may be mounted on a mobile work apparatus 1000 such as an unmanned aerial vehicle or an unmanned vehicle, and supplies power to electric devices (e.g., the motor 21 and the battery management unit) included in the mobile work apparatus 1000.

Referring to fig. 1 to fig. 3, a mobile operation apparatus 1000 according to the present embodiment includes: the moving assembly 23 with a power mechanism is embedded in the liquid storage tank 300 and the battery module 100 of the moving assembly 23. The battery module 100 includes a housing module having an electrical core, the housing module includes at least two housing housings arranged in parallel to form a plurality of gaps 32 arranged along a moving direction of the mobile operation device for air to flow, the liquid storage tank 300 forms a hollow portion 303 through which air passes, so that the air passing through the gaps 32 passes through in the moving direction (for example, a first direction) of the mobile operation device, and the hollow portion 303 passes through the liquid storage tank 300, thereby reducing flow resistance of the air passing through the gaps 32. The mobile work machine movement direction includes, but is not limited to, forward/backward linear movement, screw movement, pitch movement, yaw movement, and the like.

As shown in fig. 3, when the mobile working device 1000 moves in the first direction, the cold air 26 with a lower temperature flows through the gap 32 and cools the battery core 39 through the accommodating housing 31 to generate hot air 27 with a higher temperature, and the hot air 27 can directly pass through the liquid storage tank 300 from the hollow portion 303, so that the air resistance of the air flowing through the housing module is reduced, and the heat dissipation efficiency of the air obtained by cooling the battery module 100 by passive air cooling is further improved.

As shown in fig. 1, the moving assembly 23 may be formed by a closed frame, and encloses a frame 231 for accommodating the liquid storage tank 300 and a frame 232 for accommodating the battery module 100. The bottom of the moving assembly 23 is provided with a support 200, and the liquid storage tank 300 and the battery module 100 are inserted into the moving assembly 23 from top to bottom and rest on the moving assembly 23. Four corners of removal subassembly 23 transversely stretch out cantilever 29, and the end of cantilever 29 all sets up a motor 21 to it is rotatory to drive rotor 22 by motor 21, and forms four rotor unmanned aerial vehicle (i.e. removes a subordinate concept of operation equipment 1000). As shown in fig. 2, the reservoir 300 includes a shoulder 301 and a cylindrical portion 302 which rest on the frame 231, and a hollow portion 303 is formed in the cylindrical portion 302 in the first direction and rests on the frame 231 via the shoulder 301. The top of the shoulder 301 forms a mouth 311 into which the spray medium is poured, and the mouth 311 can be moved open or closed. The shoulder 301 and the barrel 302 together form a shielded cavity (not labeled) for containing liquid (e.g., water, pesticide, and the like, to be sprayed). Meanwhile, a spraying device (not shown) may be disposed under the motor 21 on the cantilever 29, and the spraying device is connected to the liquid storage tank 300 through a flexible or rigid pipeline, and is driven by a pump (not shown) to pump a spraying medium into the flexible or rigid pipeline, and finally forms a tiny fog drop for spraying crops or trees. In the first direction, the battery module 100 is disposed in front of the liquid storage tank 300, and an electronic module and a flight control device (not shown) are disposed behind the liquid storage tank 300, so as to facilitate the balance of the center of gravity of the entire mobile work apparatus 1000, and of course, the battery module 100 may be disposed behind the liquid storage tank 300. As a reasonable modification of the foregoing technical solution, as shown in fig. 2, the bottom end 312 of the cylinder 302 may be omitted, and a U-shaped region (not shown) with a downward opening is formed by the notch with the bottom end 312 omitted and the hollow 303, so that the battery module 100 is integrally embedded in the U-shaped region, so that the structure of the mobile operation device is more compact, and the gravity balance of the mobile operation device 1000 is further improved, so as to ensure the stability of the posture of the mobile operation device 1000 during the flight movement.

The battery module 100 is carried on the mobile operation device 1000 (e.g., a drone) and is open to the air. The housing module 30 included in the battery module 100 is partially or completely exposed to the windward side of the mobile operation device 1000 during the moving process, and the air generated by the mobile operation device 1000 during the moving process flows through the plurality of gaps 32 formed in the housing 31 of the battery module along the transverse direction perpendicular to the moving direction (e.g., the first direction) of the mobile operation device, so that the housing 31 is cooled by the air, and the heat generated by the battery cell 39 during the working states of charging, discharging, and the like is taken away, thereby ensuring that the battery cell 39 is always below the normal working temperature, without active air supply, the housing 31 is effectively cooled by the air flow of the mobile operation device 1000 during the moving process, and the faster the moving speed of the mobile crop device is, the better the cooling effect is, and the wind energy is effectively utilized. For example, the battery cell 39 may be a ternary lithium battery, which has a relatively strict requirement on the operating temperature, and if the temperature of the battery cell 39 is too high, the endurance time may be seriously shortened and the service life may be adversely affected. The battery core 39 is not limited to a ternary lithium battery, and other types of energy storage units with higher energy storage density in the prior art may be used, and are not enumerated here one by one.

The battery module 100 disclosed in the embodiments of the present disclosure can improve the safety, the service life, and the endurance time of the battery module 100, and ensure that the overall volume of the entire battery module 100 is small for being carried on the mobile operation device 1000; meanwhile, referring to fig. 23, compared to the technical solution of using water cooling circulation or active air cooling heat dissipation based on a fan in the prior art, the structure of the battery module 100 disclosed in the embodiments of the present application is simpler and more reliable, which is beneficial to ensuring the overall structural strength and has lower manufacturing cost, when the battery module is carried on the mobile operation device 1000, the battery module can be cooled by passive air cooling, and when the battery module is separated from the mobile operation device 1000, the battery module can be cooled by water cooling or cooled by active air cooling. Compared with water cooling or active air cooling during single charging, uninterrupted heat dissipation can be achieved in a charging and discharging period (during rapid charging, slow charging or discharging), heat dissipation efficiency of the battery module is greatly improved, and energy loss is reduced by utilizing passive air energy for heat dissipation. The active air cooling is realized by radiating the battery module through air generated by a fan.

Specifically, the battery module 100 includes: referring to fig. 11, the housing module 30 with the battery cell 39 is assembled to a fixing portion along a vertical direction of the housing module 30. The fixing portion restricts the housing module 30 from moving in a plane perpendicular to the insertion direction formed by the housing module 30 and the fixing portion. For example, when the plugging direction is a vertical direction perpendicular to the horizontal plane, the plane is the horizontal plane. The insertion direction formed by the housing module 30 and the fixing portion may be a vertical direction perpendicular to the horizontal plane, and the insertion direction is perpendicular to the plane of the fixing portion. In order to increase the energy density of the entire battery module 100 and ensure the endurance, the case module 30 is formed by a plurality of accommodating cases 31 that individually accommodate one cell or two or more cells and are arranged in a horizontal regular manner.

The housing module 30 includes at least two housing housings 31 arranged in parallel, and a plurality of gaps 32 arranged along the moving direction of the mobile operation equipment are formed by the housing housings 31 arranged in parallel for air to flow, and the ratio of the sum of the widths W of the gaps formed between adjacent housing housings 31 to the sum of the lengths of the housing housings 31 is 0.01811-0.03106. The gap width W formed by the gap 32 refers to a space formed between the adjacent housing cases 31 in a lateral direction perpendicular to the first direction in fig. 9, and the space and the gap width W have the same technical meaning. The storage case 31 may be made of a simple substance metal or alloy such as aluminum, aluminum alloy, titanium alloy, copper, or steel, or a material having a certain structural strength and high thermal conductivity such as an inorganic nonmetallic material such as silicon carbide, and is preferably made of an aluminum alloy. In particular, in the present embodiment, the gap 32 width (i.e., the gap width W) is greater than or equal to 3mm and less than or equal to 5mm. Referring to fig. 9, the first direction is a moving direction of the mobile working apparatus 1000, and air flows into the gap 32 along arrow D during movement of the mobile working apparatus 1000, is compressed and collected from the gap 32, and sequentially passes through the gap 32 along arrows E and F to remove heat generated by the battery cell 39 during charging and discharging, so as to cool the battery cell 39 passively by air cooling. It should be noted that, the accommodating shell 31 is of an integrated structure to ensure a sealing effect, so that the accommodating shell 31 can be placed in water to achieve a water-cooling heat dissipation effect, and meanwhile, the accommodating shell 31 has certain rigidity, so that the accommodating shell is prevented from being deformed due to the expansion stress of the charge and discharge of the battery core 39, and the gap is reduced to affect a ventilation heat dissipation effect.

Illustratively, the fixing portions are formed at both the top and bottom of the housing module 30, so that the fixing portions are regarded as upper and lower fixing portions. The upper fixing portion is understood as an integral structure formed by assembling the upper case 10 with the upper case connection box 20 in a vertical direction as shown in fig. 10, and the lower fixing portion is formed at the bottom of the case module 30, so that the lower fixing portion is understood as a base 40 as shown in fig. 8. As shown in fig. 4, the upper case 10 is formed with mounting

holes

121, 122, and 123, and a handle 11. The upper housing 10 forms two longer positioning posts 14 and two shorter positioning posts 15 on the side facing the upper housing connection box 20. Meanwhile, the upper housing connecting box 20 is provided with two shorter receiving holes 24 and two longer receiving holes 25 for receiving the positioning posts 14 on the side facing the upper housing 10, so that the longer positioning posts 14 are inserted into the receiving holes 25, and the shorter positioning posts 15 are inserted into the receiving holes 24, thereby ensuring that the upper housing 10 is covered with the upper housing connecting box 20 in a correct mounting manner, and preventing the upper housing 10 from being assembled incorrectly. Referring to fig. 10 and 11, the cell integrated separators 22 are horizontally arranged on top of the positive and

negative terminals

3912 and 3922 on top of the accommodating case 31. The battery cell integrated partition 22 forms a plurality of rectangular through holes for the positive and negative terminals 3912 and the positive and negative terminals 3922 to penetrate through the rectangular through holes in a vertical posture, and after the positive and negative terminals of two adjacent battery cells penetrate through the rectangular through holes and are welded to each other, the rectangular through holes are filled with insulating materials to insulate the terminals. The positive and

negative terminals

3912 and 3922 may be electrically connected to a circuit board (not shown) disposed above the cell integrated partition 22 and in the upper case connection box 20 by wires or connectors (not shown). The edge of the upper case connection box 20 forms a plurality of blind holes 203 with internal threads, and screws can be screwed into the blind holes 203 with internal threads after penetrating the mounting holes 122 and the mounting holes 123 to shield the circuit board.

Meanwhile, referring to fig. 10 and 5, the

positioning columns

14 and 15 are also provided with screw holes (not shown) in the vertical direction through which screws penetrate and which have internal threads, and the screws are screwed into the mounting holes 121 and finally into the locking blocks 36 which are outside the two housing cases 31 outermost in the lateral direction and which have the screw holes 361. The upper housing 10 forms a connection post 201 at the bottom of the mounting hole 121, which is held in the vertical direction and has a through hole (not shown) with internal threads. The screws continuously penetrate through the mounting holes 121 and the connecting posts 201 in the vertical direction and are screwed into the screw holes 361 of the locking blocks 36, thereby securely connecting the upper fixing portion with the top of the housing module 30. Meanwhile, the battery cell integrated partition 22 is composed of a thin-wall insulating plate 221, and a shorter side edge of the thin-wall insulating plate laterally protrudes outwards to form a positioning seat 223, and the positioning seat 223 downwardly forms a tapered positioning column 224. A hollow rail for accommodating the positioning post 224 is formed along the outer side wall of the accommodating housing 31 on the outermost side in the transverse direction as a guiding portion 34, the positioning post 224 is embedded in the hollow rail and screwed into the hollow rail transversely by using a screw 341, and abuts against the positioning post 224 extending into the hollow rail, so as to establish a reliable connection between the upper fixing portion and the housing module 30, and to separate the upper fixing portion and the housing module 30 by loosening the screw 341. In order to further improve the heat dissipation effect, the upper fixing part and/or the lower fixing part can be made of materials with certain structural strength and high heat conduction performance, such as aluminum, aluminum alloy, copper and the like.

As shown in fig. 11 and 12, the accommodating case 31 forms an insertion opening 38 into which the battery cell 39 is inserted in the vertical direction, and the adjacent accommodating case 31 is a split structure. The insertion port 38 is formed in the vertical direction at one end portion of the housing case 31, and specifically, the insertion port 38 is formed in the vertical direction at one end portion near the upper fixing portion. In fig. 12, c is the thickness (or width) of the housing case 31, a is the length of the housing case 31, and b is the height of the housing case 31. Illustratively, the length a ranges from 138 to 122mm, the height b ranges from 150 to 160mm, and the length c ranges from 22 to 28mm. In the battery module 100 formed with the same gap width W, six gaps are formed between the adjacent housing cases 31, the sum of the gap widths formed by the six gaps is 18 to 30mm, and the sum of the lengths a of the seven housing cases 31 is 966 to 994mm, so that the ratio of the sum of the gap widths formed between the adjacent housing cases 31 to the sum of the housing case lengths c is 0.01811 to 0.03106. When the gap widths of the six gaps 32 are equal, the gap width W may be any of values of 3.0mm,3.5mm,3.9mm,4.0mm,4.1mm,4.2mm,4.4mm,4.7mm,4.8mm, or 5mm.

As shown in fig. 9 and 13, in the embodiment, the plurality of housing shells 31 are arranged transversely and have the same gap width W formed from inside to outside. Illustratively, six gaps 32 are formed in the lateral direction by seven housing cases 31, and the width W1 of each gap 32 formed in the lateral direction is equal. Meanwhile, the end surfaces of the adjacent accommodating cases 31 are flush with each other along the extending direction of the gap 32, wherein the end surface of the adjacent accommodating case 31 is an end surface formed on the windward side or the leeward side. Therefore, when the mobile working apparatus 1000 moves in the setting direction, the air volume Q1 formed by the air flowing through the gap 32 having the width W1 is equal among the six gaps 32, and the air volume Q1 formed by the air flowing through each gap 32 is equal. In particular, in the present embodiment, the cross section of the cutout 303 formed in the moving direction of the mobile working apparatus covers the end face of the adjacent housing case 31, thereby forming a flow area where the cross section area is larger and the hot air 27 penetrates the tank 300.

Referring to fig. 11, two

cells

391 and 392 in a sheet structure are accommodated in parallel in the housing case 31, the two

cells

391 and 392 are attached to the side wall of the housing case 31 through which air flows, and the buffer heat conduction layer 310 is sandwiched between the two

cells

391 and 392 attached to each other, and the buffer heat conduction layer 310 can contact with the housing case 31. The outer side surface 3911 of the cell 391 is attached to a larger inner wall surface of the accommodating case 31 (i.e., a plane defined by the length a and the height b of the cell 39), the top of the cell 391 forms a positive and negative terminal 3912, the outer side surface 3921 of the cell 392 is attached to another larger inner wall surface of the accommodating case 31, and the top of the cell 392 forms a positive and negative terminal 3922. The sheet-shaped buffering heat-conducting layer 310 clamped between the electric core 391 and the electric core 392 can play a role in buffering, so that damage of vibration to the electric core 39 is avoided, an expansion space can be reserved for the electric core 39, and the phenomenon that the electric core 39 deforms or even reduces the gap width W to affect the heat dissipation effect due to the fact that the electric core 39 expands and extrudes the accommodating shell 31 in the charging and discharging process is avoided. In addition, heat generated between two cells arranged in parallel in an operating state can also be transferred to the four side walls and the bottom wall of the housing case 31 through the buffer heat conduction layer 310. Through the design of the present application, it is ensured that each battery cell 39 forms at least one heat dissipation surface directly contacting with the housing case 31, and the battery cell temperature is prevented from increasing due to heat accumulation inside the battery cell 39; meanwhile, the buffering heat conduction layer 310 can also play a good role in heat dissipation and buffering for the internal battery core 391 and the battery core 392, so that the structural stability of the whole accommodating shell 31 is ensured, the stability of a ventilation gap is ensured, and the battery module has a good heat dissipation effect. For example, the buffer and heat conducting layer 310 may be made of a heat conducting silicone rubber, and the thickness of the buffer and heat conducting layer 310 may be determined according to the width of the gap between the cells reserved after the

cells

391 and 392 are inserted into the housing case 31, and therefore the thickness of the buffer and heat conducting layer 310 is not particularly limited in this embodiment.

In the present embodiment, the fixing portions include an upper fixing portion formed at the top of the housing module 30 and a lower fixing portion formed at the bottom of the housing module 30, and the lower fixing portion can be omitted; the upper fixing portion and the lower fixing portion clamp and fix the housing module 30 in a vertical direction, and are connected by the housing module 30. Referring to fig. 8 and 10, the lower fixing portion forms a plurality of receiving slots 46 into which the receiving housings 31 are inserted and separated from each other, so as to limit the receiving housings 31 from moving in a plane perpendicular to the inserting direction formed by inserting the receiving housings 31 into the receiving slots 46. The lower fixing portion includes: the housing module 30 is supported by a plate body 41, a surrounding plate 44 and a rib 45 formed on one side of the plate body 41, and a housing groove 46 is formed by the surrounding plate 44, the rib 45 and the plate body 41. As shown in fig. 7, a plurality of water permeable holes 412 penetrating the plate 41 are formed in the bottom of the housing groove 46, thereby not only providing the effect of further ventilation and heat dissipation, but also discharging the water remaining in the base 40 through the water permeable holes 412. The bottom of the plate body 41 is formed with a reinforcing rib 411. The reinforcing ribs 411 may have a hexagonal honeycomb shape and are not particularly limited, thereby further improving the structural strength of the base 40. The bottom of the plate body 41 is formed with a lightening hole 413 which may or may not penetrate the bottom plate 41.

As shown in fig. 8, the accommodating case 31 has a sheet-like cubic shape, the surrounding plates 44 have a rectangular shape along the insertion direction of the accommodating case 31 and the lower fixing portion, and the buffer members 42 made of an elastic material (for example, weather-resistant rubber) are provided at four corners of the surrounding plates 44. The bumper 42 has a top portion higher than the height of the shroud 44 and partially surrounds the outside of the lock block 37 to protect the lock block 37.

As shown in fig. 5, 8, 10 and 11, at least one guide portion 34 is laterally protruded from the sidewall 351 of the housing case 31 located at the outer side, and the lower fixing portion and the upper fixing portion respectively form a limiting portion into which the guide portion 34 is inserted. Specifically, the buffer 42 is inserted into the base 40 in the second direction. The bottom of the buffer member 42 forms a through hole 421, and is screwed and fixed with the plate body 41 after passing through the through hole 421 from bottom to top by using a screw. The shroud 44 forms laterally projecting outward-extending wall sections 43 on both sides in the width direction of the plate body 41 as stopper portions into which the guide portions 34 are inserted, which are formed as lower fixing portions. The hollow guide rail is inserted as a guide portion 34 in the vertical direction into the outer flared wall section 43 and an outer flared wall section 202 provided in the upper case connection box 20 in the width direction thereof, respectively, the outer flared wall section 202 forming a hollow region (not shown) into which the hollow guide rail is inserted. Meanwhile, as shown in fig. 11, locking blocks 37 having screw holes 371 are protruded from the bottom of the outer side walls of the two housing cases 31 located at the outermost sides in the lateral direction, so that the base 40 as a lower fixing portion is securely connected to the bottom of the case module 30.

As shown in fig. 6, the side wall 352 of the housing case 31 in the thickness direction (i.e., lateral direction) thereof forms a heat dissipating structure 3521. Therefore, heat generated by the battery cell 39 (and the accommodating case 31) in the thickness direction (i.e., the windward side and the leeward side of the mobile operation device 1000 during movement) is effectively conducted through the heat dissipation structure 3521, and heat dissipation of the battery cell 39 is realized. Heat radiation structure 3521 can select for use the cross section to be wavy heat dissipation strip, perhaps selects for use the cross section to be flaky heat radiation fin to preferentially be the cross section for wavy heat dissipation strip, thereby increase heat radiating area, reduced for example the air resistance that mobile operation equipment 1000 such as unmanned aerial vehicle received because of battery module 100 in the removal in-process, and indirectly improved this battery module 100's duration.

Referring to fig. 5, 20 and 21, in order to better illustrate the technical effects achieved by the technical solutions included in the present application, the present application shows a comparison graph of the cooling rate of the battery core 39 in the accommodating case 31 located in the middle in the battery module example formed by forming six gaps in fig. 5 and seven accommodating cases 31, and each accommodating case 31 accommodates two battery cores 39, and the cooling rate of the battery pack adopting the prior art, adopting the same battery core, having the same number of battery cores, and not forming a plurality of gaps. When unmanned aerial vehicle carried this battery module and keeps quiescent condition, adopted same electric core and electric core quantity in the prior art equal and do not set up the battery package in clearance and the contrast picture of the cooling rate of the electric core 39 who accepts in the casing 31 that adopts the centre in the example of the battery module that this application announced. Based on the two cooling curves shown in fig. 20, it can be seen that when the initial temperature is 64 ℃, the battery modules with the same gap width W can be cooled to 35 ℃ after the battery modules are operated for 700 seconds by using the fan (i.e., a lower concept of the circulation device 82 in fig. 23) in an active air cooling manner, while the cooling rate of the battery pack in the prior art is significantly lower and can be reduced to 35 ℃ after the battery pack is operated for 2200 seconds.

Therefore, the battery module disclosed by the embodiment can achieve a faster cooling effect. However, if the gap 32 between the receiving cases 31 is set excessively large, the volume and the manufacturing cost of the battery module 100 are significantly increased. Therefore, in the case that the gap widths W are equal, the range of selecting the gap width W to be 3-5 mm has the advantages of small volume of the battery module, low manufacturing cost and good ventilation and heat dissipation performance. Generally, the optimum operating temperature for a ternary lithium battery should be below 55 ± 5 ℃ in order to facilitate increased service life. Referring to fig. 21, under the same conditions, a total of six sets of data showing the temperature rise of the battery over time in the rapid charging mode (i.e., rapid charging using a large current) are shown when the gap width W is selected to be 0mm (i.e., the gap 32 between the adjacent housing cases 31 through which air flows through the battery module 30), 1mm, 2mm, 3mm, 4mm, and 5mm, respectively. As can be seen from fig. 21, when the gap width W takes 3mm, the temperature is still below 60 ℃ after 600 seconds of operation in the fast charge mode and the maximum temperature tends to be stable. When the gap width W is 4mm, the maximum temperature approaches the upper limit value of the optimum operating temperature of 55 ℃ in the rapid charging mode for 600 seconds and the maximum temperature tends to be stable. When the gap width W is 5mm, the temperature is still below 52 ℃ after the rapid charging mode is operated for 600 seconds, and the highest temperature tends to be stable. However, when the gap width W is 0mm, 1mm, or 2mm, the maximum temperature has already respectively broken through 68 ℃, 65 ℃, and 63 ℃ after the fast charge mode is operated for 600 seconds, and has already exceeded the upper limit of the limit of 60 ℃, which has an adverse effect on the charge and discharge performance and the service life of the battery cell 39. Therefore, the battery module 100 (the gap width is selected to be 3-5 mm) disclosed in the present embodiment has a good heat dissipation capability and a long service life.

Meanwhile, as shown in fig. 22, the battery module 100 disclosed in this embodiment is mounted on an unmanned aerial vehicle and tested to form the same gap width, and the battery module formed with the gap width of 4mm and the comparative test data of the temperature change of the battery pack in full-load flight in the prior art, which uses the same battery core and has the same number of battery cores and does not form a plurality of gaps. The battery module that this application that constitutes the electric core 39 of same capacity reveals and the battery package among the prior art are carried on the four rotor unmanned aerial vehicle of the same configuration (i.e. unmanned aerial vehicle's specification, take-off weight, electric core electric quantity isoparametric homogeneous phase are the same), keep 5 meters/second cruise the fast and last flight 600 seconds to test the temperature of same position and lieing in innermost electric core 30. The ambient temperature and the cell temperature were both 25 ℃ at takeoff. Referring to fig. 22, after the unmanned aerial vehicle carrying the battery pack of the prior art keeps the cruising posture for 600 seconds, the cell temperature rises from 25 ℃ to 48 ℃, and after the unmanned aerial vehicle adopting the battery module disclosed in the embodiment keeps the cruising posture for 600 seconds, the cell temperature rises from 25 ℃ to 38.4 ℃. Therefore, when the unmanned aerial vehicle flies, air can flow through the gap 32 and passive air-cooling heat dissipation is realized, so that the temperature of the battery cell 39 is delayed.

It should be noted that the gap between the accommodating cases 31 can also be determined by the thermal conductivity of the accommodating cases 31, the cruising speed of the unmanned aerial vehicle, the expansion rate of the accommodating cases 31, and other factors. For example, the faster the cruising speed of the unmanned aerial vehicle is generally increased, the gap width W between the housing cases 31 can be appropriately reduced.

The application also discloses a modified example of the battery module disclosed by the embodiment. The battery module disclosed in the present embodiment is different from the previous embodiment in that, in this modification, the fixing portion is formed at the top of the case module 30 so as to be regarded as an upper fixing portion, and the upper fixing portion is understood as an integrated structure formed by assembling the upper case 10 and the upper case connection box 20 in the vertical direction as shown in fig. 10. The fixing portion is formed at the bottom of the housing module 30, so that the base 40 is regarded as a lower fixing portion as in fig. 8. Meanwhile, in the present embodiment, insertion ports 38 are formed in the vertical direction at both end portions (not shown) of the housing case 31. When the insertion opening 38 is disposed at the bottom end of the accommodating case 31, after the base 40 is detached, the battery cell(s) 39 in the accommodating case 31 are independently replaced after being pulled out from the insertion opening (not shown) formed at the bottom of the accommodating case 31, so that the battery cell(s) 39 are replaced when the number of charge/discharge cycles of the battery cell(s) 39 reaches the service life limit, thereby simplifying the operation of individually replacing the battery cell(s) 39 and omitting the operation difficulty of removing the upper fixing portion.

Referring to fig. 17, the adjacent housing cases 31 are of a unitary structure (i.e., a plurality of housing cases 31 are at least partially connected to each other and expose the gaps 3 to the maximum). Meanwhile, as shown in fig. 17, the housing module 30 may be partially inserted into the upper and lower fixing portions in the vertical direction; as shown in fig. 18, the housing module 30 may not be partially inserted into the upper fixing portion and the lower fixing portion in the vertical direction, so as to completely expose the air flow area formed by all the gaps 32; or, the shell module part of the integral structure is partially inserted into the upper fixing part and the lower fixing part along the vertical direction, or any other reasonable deformation is carried out.

The present application also discloses still another modification of the battery module disclosed in the foregoing embodiment. The battery module disclosed in this embodiment differs from the previous embodiment in that in this modification, a plurality of housing cases 31 are arranged laterally and the width of the gap 32 formed from the inside to the outside is tapered. Therefore, when the mobile working equipment 1000 moves in the set direction, the amount of air flowing through the gaps of different widths is different. Specifically, as shown in fig. 14, the gap width on both sides of the innermost accommodating case 31 is W3, the gap width inside the outermost accommodating case 31 in the transverse direction is W1, the gap width formed inside the outermost accommodating case 31 in the transverse direction inside the accommodating case 31 is W2, the gap width W3 is greater than the gap width W2, and the gap width W2 is greater than the gap width W1. For example, W1 is configured to be 3mm, W2 is configured to be 4mm, and W3 is configured to be 5mm. Therefore, the air volume Q3 formed by the gap on both sides of the innermost accommodating case 31 is larger than the air volume Q2 formed by the gap having the gap width W2, and the air volume Q2 formed by the gap having the gap width W2 is larger than the air volume Q1 formed by the gap having the gap width W1. Therefore, the heat generated by the battery core 39 accommodated by the accommodating shell 31 closer to the center in the working state is transferred through the accommodating shell 31 made of metal and is more effectively taken away through relatively larger air quantity Q3, so that the heat dissipation efficiency of the battery core 39 at different positions can be adjusted in a targeted manner while the whole volume of the battery module is not increased, the heat dissipation efficiency of the battery core 39 close to the center is improved, the temperature of each battery core 39 in the working state basically tends to be consistent, and the battery core 39 is always located in an optimal working temperature range of about 55 +/-5 ℃, so that the charging and discharging efficiency of each battery core 39 is improved, and the service life of the battery core 39 is prolonged.

Meanwhile, as shown in fig. 15, as a reasonable modification of the present embodiment, it is also possible to form the end faces of the adjacent housing cases 31 in an alternate offset arrangement in the extending direction of the gap 32 (i.e., the first direction in fig. 9). When the mobile working device 1000 moves in the first direction, the three accommodating cases 31 arranged at a staggered position relatively to the rear and the four accommodating cases 31 arranged at a staggered position relatively to the front form three recessed regions P1, so that the recessed regions P1 are more favorable for gathering and compressing air flowing into the gap 32 from the windward side, and an air volume Q4 greater than the air volume Q3 in the foregoing embodiment is formed, and the air flows through the two sides of the accommodating cases 31 from the gaps at the two sides of the accommodating cases 31 arranged relatively to the rear, so as to achieve a better heat dissipation effect. Meanwhile, the side walls 351 of the outermost two accommodating cases 31 are also exposed to the air, and heat dissipation is achieved to the outermost two accommodating cases 31 by the air that swiftly sweeps over the surfaces of the side walls 351. Meanwhile, the widths of the gaps formed between the seven accommodating cases 31 shown in fig. 15 may be W1, or the seven accommodating cases 31 may be arranged in a state that the accommodating cases 31 are arranged transversely and the gaps are tapered from inside to outside as shown in fig. 14, so that heat generated by the accommodating cases located in the middle and the opposite inner sides is effectively discharged, and thus the temperature of one or two battery cells 39 accommodated in each accommodating case 31 tends to be consistent in the operating state, so as to achieve consistency of charging and discharging performance.

The application also discloses another modified example of the battery module disclosed by the embodiment. The battery module disclosed in this embodiment is different from the previous embodiment in that, as shown in fig. 19, in this modification, the lower fixing portion (i.e., a generic concept of the base 40) forms a plurality of locking portions 48 which are isolated from each other and partially extend into the accommodating case 31, so as to restrict the accommodating case 31 from moving in a plane perpendicular to the insertion direction in which the accommodating case 31 is inserted into the locking portions 48. The end surface of each accommodating case 31 near the base 40 forms a recessed area (not shown) that matches the lock portion 48. The depressed regions and the locking parts 48 are vertically inserted into each other to restrict the rotation or movement of the housing module 30 with respect to the base 40, thereby securing the structural reliability of the battery module.

With reference to the embodiments of the mobile operation device disclosed in the foregoing embodiments, the battery module may be further cooled by the following cooling method. The heat dissipation method comprises the following steps: when the battery module moves, heat is dissipated through passive air cooling; when the battery module is in a static state, heat is dissipated through water cooling or active air cooling.

Exemplarily, referring to fig. 23, the battery module 100 is mounted in a cooling case 80 forming a shielding cavity 81, and the cooling case 80 omits a top plate in fig. 23. The inside of cooling housing 80 sets up the interior bounding wall 83 that is used for fixed battery module 100, and interior bounding wall 83 sets up circulating device 82 along the one end of clearance 32 extending direction, and when adopting active air-cooled heat dissipation, circulating device 82 is the fan, and when adopting the water-cooling mode heat dissipation, circulating device 82 is the impeller. The medium 84 with a lower temperature flows to the gaps 32 under the driving of the circulating device 82, and after passing through the gaps 32, carries away the heat generated by the electric core 39 and forms a medium 85 with a higher temperature. The medium 85 having a higher temperature lowers the temperature by the heat conduction effect and re-forms the medium 84 having a lower temperature and repeatedly flows through the plurality of gaps 32 of the battery module 100 by the driving of the circulation device 82, so as to lower the overall temperature of the battery module 100. Water or air is one heat exchange medium for heat dissipation. Battery module and removal subassembly 23 swing joint, when the removal operation equipment 1000 removed, thereby it bears the weight of and realizes passive form forced air cooling heat dissipation through the removal of removing operation equipment 1000 on removal subassembly 23, when needs charge, the battery module can be followed the removal subassembly and taken off, and then dispel the heat to the battery module through water-cooling mode/active forced air cooling to realize incessant heat dissipation to the battery module, improve the radiating efficiency.

The above list of detailed descriptions is only for the specific description of the feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention should be included within the scope of the present invention.

Claims

1. A mobile work apparatus, comprising:

the battery module comprises a shell module with an electric core, the shell module comprises at least two accommodating shells which are arranged in parallel to form a plurality of gaps which are arranged along the moving direction of the mobile operation equipment and used for air to flow, the liquid storage tank forms a hollow-out part through which air penetrates, so that the air flowing through the gaps is communicated in the moving direction of the mobile operation equipment, and the shell module is assembled on a fixing part along the vertical direction.

2. The mobile working machine according to claim 1, wherein a gap width formed between adjacent housing cases is 3 to 5mm.

3. The mobile working apparatus according to claim 1, wherein the fixing portion is formed at a top of the housing module, or the fixing portion is formed at a bottom of the housing module, or both the top and the bottom of the housing module.

4. The mobile work apparatus according to claim 3, wherein the housing case forms an insertion opening into which the battery cell is inserted in a vertical direction, and the adjacent housing case is of an integral structure, or the adjacent housing case is of a split structure.

5. The mobile working apparatus according to claim 4, wherein the insertion opening is formed at one end portion or both end portions of the housing case in a vertical direction.

6. The mobile work apparatus according to claim 4, wherein the plurality of housing cases are arranged laterally and have a gap width formed from the inside to the outside that is tapered, or wherein the plurality of housing cases are arranged laterally and have a gap width formed from the inside to the outside that is equal.

7. The mobile working apparatus according to claim 6, wherein end faces of adjacent housing cases are flush in a gap extending direction, or the end faces of adjacent housing cases are formed in an alternately offset arrangement in the gap extending direction.

8. The mobile work apparatus according to claim 7, wherein the hollow portion forms a cross section along a moving direction of the mobile work apparatus so as to cover an end surface of an adjacent housing case.

9. The mobile work apparatus according to claim 3, wherein the fixing portion includes an upper fixing portion formed at a top of the housing module and a lower fixing portion formed at a bottom of the housing module; the upper fixing portion and the lower fixing portion clamp the shell module and are connected through the shell module.

10. The mobile working apparatus according to claim 9, wherein the lower fixing portion forms a plurality of locking portions separated from each other and partially extending into the accommodating case to restrict the accommodating case from moving in a plane perpendicular to a direction in which the accommodating case is inserted into the locking portions, or forms a plurality of accommodating grooves into which the accommodating case is inserted and separated from each other to restrict the accommodating case from moving in a plane perpendicular to a direction in which the accommodating case is inserted into the accommodating grooves.