CN113696704A

CN113696704A - Power plant

Info

Publication number: CN113696704A
Application number: CN202110386969.7A
Authority: CN
Inventors: 李立; 李龙
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2020-05-21
Filing date: 2021-04-12
Publication date: 2021-11-26
Also published as: CN113726095A; CN113708562A; CN215646533U; CN215418836U; CN215398128U; CN215646535U; CN215912559U; CN113696703A; CN214799148U

Abstract

The invention discloses a power device, which is used for connecting gardens or outdoor power execution equipment and comprises: a housing formed with an accommodating space; a motor at least partially disposed within the receiving space; a control assembly for controlling the motor; the shell comprises a first shell made of a first material and a second shell made of a second material; the control assembly is at least partially coupled to the first housing, and the first type of material has a thermal conductivity greater than the second type of material. The power device has better heat dissipation effect and long service life.

Description

Power plant

Technical Field

The invention relates to a power device.

Background

The power device is used as an independent power unit and is connected to the execution equipment to drive the execution equipment to work or run. The power device is used as a power output unit and comprises a driving part, an energy part and a control part. As a combination of a plurality of components, the power device has large disadvantages of volume, weight, heat dissipation and the like. How to provide a power device with good heat dissipation effect and compact whole machine is a technical problem to be solved urgently at present.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the power device which is good in heat dissipation effect and compact in whole machine.

In order to achieve the above object, the present invention adopts the following technical solutions:

a power plant for connection to a garden or outdoor power performing apparatus, comprising: a housing formed with an accommodating space; a motor at least partially disposed within the receiving space; a control assembly for controlling the motor; the shell comprises a first shell made of a first material and a second shell made of a second material; the control assembly is at least partially coupled to the first housing, and the first type of material has a thermal conductivity greater than the second type of material.

Further, the first type of material is made of a metal material, and the second type of material is made of a plastic material.

Further, the outer surface of the casing has a first surface area S1, the second casing has a second surface area S2 after being mounted to the power device, and the ratio of the first surface area S1 to the second surface S2 is greater than or equal to 1.5 and less than or equal to 2.

Further, the control assembly is fixedly connected with the first shell.

Further, the distance between the control assembly and the first shell is smaller than a preset value.

Further, the control assembly includes a first control panel configured to extend substantially in a first plane and a second control panel configured to extend substantially in a second plane; the power unit further includes a central plane extending substantially in the fore-aft direction, at least one of the first plane and the second plane intersecting the central plane.

Further, the first control plate and the second control plate are intersected and in a V shape.

Further, a power supply assembly for driving the motor is included, and the housing further includes a connection surface for connecting at least a portion of the power supply assembly.

A power plant for connection to a garden or outdoor power performing apparatus, comprising: a housing formed with an accommodating space; a motor at least partially disposed within the receiving space; a control assembly for controlling the motor; the housing comprises a housing portion with a thermal conductivity of 80W/(m K) or more, and the control assembly is at least partially connected to the housing portion.

Further, the housing includes a first housing made of a first type of material and a second housing made of a second type of material; the first shell forms a shell portion, and the heat conductivity coefficient of the first type of material is larger than that of the second type of material.

The invention has the advantages that: through being connected to the first casing that has higher coefficient of heat conductivity with control assembly to optimize the radiating effect, increase unit head life.

Drawings

Fig. 1 is a perspective view of a power unit in a first embodiment;

FIG. 2 is a perspective view of the power plant of FIG. 1 mounted to an implement;

FIG. 3 is an exploded schematic view of the power plant of FIG. 1 separated from a second type of power source;

FIG. 4 is an exploded view of the power plant of FIG. 1;

FIG. 5 is an exploded view from another perspective of the power plant of FIG. 1;

FIG. 6 is an enlarged fragmentary view of the power plant of FIG. 4 at A;

FIG. 7 is a cross-sectional view of the power plant of FIG. 1;

FIG. 8 is a cross-sectional view of the power plant of FIG. 1 from another perspective;

FIG. 9 is a perspective view of the power unit of FIG. 1 with the second type of power source removed and the stationary member in an unlocked position;

fig. 10 is a perspective view of a power unit in the second embodiment;

FIG. 11 is a perspective view from another perspective of the power plant of FIG. 10;

FIG. 12 is a perspective view of the power plant of FIG. 11 with the second type of power source removed;

FIG. 13 is a perspective view of the power unit of FIG. 12 with the protective cover in an open position;

FIG. 14 is an exploded perspective view of the power unit of FIG. 13;

FIG. 15 is a top view of the power plant of FIG. 10 with the second type of power source removed;

FIG. 16 is an enlarged fragmentary view of the power plant of FIG. 10 at B;

FIG. 17 is a schematic perspective view of a third switch of the power plant of FIG. 10;

FIG. 18 is a schematic illustration of one drive connection for the motor of the power plant of FIG. 10;

FIG. 19 is a cross-sectional view of the power plant of FIG. 10;

FIG. 20 is an enlarged fragmentary view of the power plant of FIG. 19 at C;

fig. 21 is a perspective view of the power unit of fig. 10 mounted to an implement.

Detailed Description

Fig. 1 to 4 show a power unit 100 capable of outputting a driving force. Which includes a housing 11, a motor 12, a control assembly 13, a power supply assembly 14, and the like. Wherein the housing 11 is formed with an accommodating space 113 for accommodating the motor 12 and at least part of the control assembly 13. The housing 11 is also formed with a connection portion to which the power supply module 14 can be connected. Wherein the power supply assembly 14 provides the power source to rotate the motor 12 and the control assembly 13 is configured to control the motor 12 and the power supply assembly 14 such that the motor 12 is switched between a plurality of predetermined power modes. The power device 100 can be connected to an actuating device 15 such as a mower, a snowplow, etc., and can drive the actuating device 15 to operate. Specifically, the power device 100 has functions of power output, energy integration, control integration, heat dissipation integration, and the like, and the actuator 15 such as a mower, a snowplow, and the like can be used as a frame or a support structure and can be driven by the power device 100 for operation by a user. In fact, the actuator 15 only needs to have a frame for connecting the power unit 100, an accessory that can be driven, and an operation portion that can be operated by a user. The various modules of the power plant 100 are described in detail below.

In one implementation, the motor 12 includes an output 121 for driving the accessories in operation. During operation of the power plant 100, the high speed operation of the motor 12 generates a relatively large amount of heat. The power device 100, as an integration of power, control, etc., has a limited space in the housing 11, so that when the power device 100 outputs high power, more heat is generated in the accommodating space 113. As an implementation, the housing 11 is provided with an airflow inlet 111 and an airflow outlet 112. The motor 12 may be specifically configured as a motor, and the motor 12 is provided with a first fan 122, when the motor 12 operates, the first fan 122 rotates at a high speed to form a negative pressure in the accommodating space 113, so as to generate a cooling air path that enters the accommodating space 113 from the airflow inlet 111, flows through the control assembly 13 and the motor 12, and flows out from the airflow outlet 112. In one implementation, the control component 13 includes components such as a circuit board 131 and a heat sink 132, and the heat sink 132 is connected to the circuit board 131 and is used to assist heat dissipation of the circuit board 131. The power unit 100 further includes a second fan 117 provided in the housing space 113, and the second fan 117 is provided in a flow path of the cooling air passage and is independently driven to generate cooling air. In the present embodiment, the first fan 122 is embodied as a centrifugal fan, which can generate a heat dissipation airflow having a predetermined direction. For clarity of explanation of the technical solution of the present invention, a front side, a rear side, a left side, a right side, an upper side and a lower side as shown in fig. 1 are also defined. As an alternative embodiment, the airflow outlet 112 includes a first air outlet 112a and a second air outlet 112 b. The first air outlet 112a is disposed on the left side of the power device 100, and the second air outlet 112b is disposed on the right side of the power device 100. The power plant 100 includes a first heat dissipation mode and a second heat dissipation mode. When the power device 100 is in the first heat dissipation mode, the first fan 122 and the second fan 117 are both turned on, and heat dissipation airflow enters the accommodating space 113 from the airflow inlet 111 and flows out of the first air outlet 112a and the second air outlet 112b after flowing through the control assembly 13 and the motor 12. When the power device 100 is in the second heat dissipation mode, the first fan 122 is turned on, the second fan 117 is turned off, and the heat dissipation airflow flows into the accommodating space 113 from the airflow inlet 111 and the first air outlet 112a, and flows out from the second air outlet 112b after flowing through the control assembly 13 and the motor 12. In the present embodiment, the first fan 122 is a centrifugal fan, and when the first fan 122 is activated, it can generate a heat dissipation airflow flowing from the left side to the right side, so that when the power device 100 is in the second heat dissipation mode, the original first air outlet 112a is used as an auxiliary air inlet to supply air together with the airflow inlet 111, and the heat dissipation airflow is discharged from the second air outlet 112 b.

As one implementation, the control assembly 13 can control the power device 100 to switch between the first heat dissipation mode and the second heat dissipation mode. The power plant 100 includes a first power interval and a second power interval, and a threshold value is set between the first power interval and the second power interval, wherein the value of the first power interval is smaller than the value of the second power interval. It is to be explained here that any value of the first power interval is smaller than any value of the second power interval. When the output power of the power device 100 is greater than or equal to the threshold value and is in the second power interval, the power device 100 can be switched to the first heat dissipation mode. When the output power of the power device 100 is in the first power interval and is less than the threshold value, the power device 100 is in the second heat dissipation mode. When the power output by the power plant 100 is within the first power interval range, the heat released during the operation of the motor 12 and the control assembly 13 is within a predetermined range, and the first fan 122 operates alone to effectively send out the heat in the accommodating space 113. When the output power of the power plant 100 is greater than or equal to the critical value, the heat released during the operation of the motor 12 and the control assembly 13 exceeds the preset value, the first fan 122 alone is not enough to discharge the heat of the accommodating space 113 completely, and the motor 12 or the control assembly 13 may be damaged due to long-term operation, and at this time, the second motor 12 needs to be started to work together with the first motor 12, so that the heat in the accommodating space 113 is effectively discharged. Therefore, the power device 100 can keep the working state of high power output for a long time, and the service life is not influenced by the heat dissipation problem.

It is understood that, in order to improve the heat dissipation sensitivity of the power device 100, a temperature sensor (not shown) may be further disposed in the accommodating space 113, and the temperature sensor may sense the temperature in the accommodating space 113 and near the motor 12 and the control component 13 and output an electrical signal to the control component 13 according to the real-time temperature to control the power device 100 to switch between the first heat dissipation mode and the second heat dissipation mode. That is, when the temperature is lower than the preset value, the power device 100 is in the first heat dissipation mode, and when the temperature is higher than or equal to a preset value, the power device 100 is in the second heat dissipation mode. In the present embodiment, the first fan 122 has a first power P1, the second fan 117 has a second power P2, and a ratio of the first power P1 to the second power P2 is greater than or equal to 1 and less than or equal to 10. By setting the first fan 122 and the second fan 117 to have a larger power ratio, the power device 100 only radiates heat through the first fan 122 during normal operation, and only when the temperature in the accommodating space 113 is too high, the second fan 117 is started, so that the second fan 117 is prevented from consuming too much energy, and the first fan 122 can be ensured to meet the basic heat radiation requirement.

As shown in fig. 2 to 7, as one implementation, the airflow inlet 111 and the airflow outlet 112 are both disposed at an upper position of the housing 11 and are far from the output end 121 of the motor 12. Taking the lawn mower as an example, when the output end 121 of the motor 12 drives the blade to rotate for mowing, a large amount of debris and dust are generated and are mostly gathered at the lower side of the power device 100, and by arranging the airflow inlet 111 and the airflow outlet 112 at positions away from the output end 121 of the motor 12, the airflow inlet 111 and the airflow outlet 112 can be in a better environment to be away from the debris and dust, so that the heat dissipation airflow in the accommodating space 113 can keep a cleaner state when flowing through the control assembly 13 and the motor 12, and the control assembly 13 or the motor 12 is prevented from being polluted, thereby effectively prolonging the service life of the power device 100. Further, the air inlet 111 is further provided with a cavity body, the cavity body is provided with a bottom plate and a passage, the bottom plate is obliquely arranged from top to bottom, and the heat dissipation air flow needs to pass through the bottom plate and then enter the passage when entering the cavity body from the air inlet 111, and finally enters the accommodating space 113. In this process, dust or particulate matter in the heat dissipating airflow is accumulated on the bottom plate under the action of gravity while passing through the bottom plate, thereby preventing the dust or particulate matter from entering the accommodating space 113. The cavity body still possesses the storage function, when the piece piles up more, can concentrate the clearance with the piece in the cavity body. It can be understood that a dust-proof device such as a dust cover and a sponge can be further disposed at the airflow inlet 111 to increase the cleanliness of the heat dissipation airflow, which is not described herein.

As shown in fig. 1, 7 to 9, the power supply assembly 14 includes, as one implementation, a first type power supply 141 and a second type power supply 142. Wherein, the first type power source 141 is detachably connected to the housing 11 of the power device 100 and is located at the side of the housing 11. A second type power source 142 is mounted to the upper side of the power plant 100. Specifically, the side surface of the housing 11 is provided with a connection portion for mounting the first type power supply 141, and the connection portion includes a connection surface extending in the up-down direction. In the present embodiment, the connection faces include a first connection face 102 and a second connection face 103. The first connection face 102 and the second connection face 103 intersect, and the first connection face 102 and the second connection face 103 are also arranged substantially symmetrically with respect to the first plane 101 in a direction of a first plane 101 extending in the front-rear direction. Further, the first connection face 102 obliquely intersects the first plane 101, and the second connection face 103 obliquely intersects the first plane 101. The first connection face 102 and the second connection face 103 form a clamping area intersecting the motor 12, in which the motor 12 is at least partially located. In the present embodiment, the control assembly 13 includes a first control board 133 and a second control board 134. Wherein the first control plate 133 extends substantially in the second plane 104 and the second control plate 134 extends substantially in the third plane 105. The second plane 104 intersects the first plane 101 and the third plane 105 intersects the first plane. The second plane 104 and the third plane 105 are symmetrically arranged with respect to the first plane 101. In fact, the first control plate 133 and the second control plate 134 intersect and are in a "V" shape. By providing the first control plate 133 and the second control plate 134 in the above manner, the space of the angle of the housing 11 can be fully utilized, and the volume of the power unit 100 as a whole can be reduced.

The housing 11 is further provided with a first type of interface (not shown) which is connectable to a first type of power supply 141. The power unit 100 has a cubic shape as a whole, and by disposing the connecting surface at a position obliquely intersecting the first plane 101, the cubic volume can be reduced, thereby saving space. In fact, by arranging the first connecting surface 102 and the second connecting surface 103 to intersect the first plane 101 obliquely, the space occupied by the rib of the power device 100 can be substantially reduced, and the first connecting surface 102 and the second connecting surface are arranged to be flat, thereby improving the reliability and stability of the first type power source 141 mounted on the power device 100. The first type of power source 141 is provided as a removable battery pack. In fact, the connection surface may be provided in plurality, so that more first type power sources 141 with smaller volume may be connected. It will be appreciated that the first type of interface may be provided at different locations on the connection portion to accommodate the connection of different battery packs. The first type power source 141 is not limited to a uniform size, and any battery pack that can output an effective current and has an effective interface can be mounted on the connection surface. The first type of power supply 141 is at least partially coincident with the motor 12 in a projection thereof in a direction along the first plane 101, in a plane perpendicular to the front-to-back direction.

The power unit 100 is further provided with a fixing member 16 for fixing the first type power source 141. In one implementation, the mounting member 16 is in the form of a flip cover to enclose at least a portion of the first type power source 141. Specifically, the fixing member 16 is provided on the housing 11 to rotate about a rotation axis at a position away from the first type power source 141, and includes a locked state covering the first type power source 141 and an unlocked state away from the first type power source 141. When the fastener 16 is in the locked state. The first type of power source 141 can be at least partially housed and can be operatively secured to the housing 11. It can be understood that, through such a setting mode, the battery package is mostly exposed to the outside to can make the better heat dissipation of battery package.

The second type power source 142 is provided as an integrated power source structure, which can be installed on the upper side of the power device 100 and is connected to the power device 100 through a set of slide rails 142 a. Specifically, the second type power source 142 may be attached to the power unit 100 or detached from the power unit 100 from the up-down direction, may be attached to the power unit 100 or detached from the power unit 100 from the left-right direction or the front-back direction, or may be attached to the power unit 100 or detached from the power unit 100 by being rotated about a rotation axis. The power device 100 is further provided with a second type interface 116, and the second type interface 116 can be connected with a second type power source 142 to supply power to the power device 100. The first type power source 141 and the second type power source 142 are disposed perpendicular to each other, thereby making maximum use of the external space of the case 11. Specifically, the first power source 141 and the second power source 142 may be connected in parallel, and power supply modes thereof are diversified. The first type power supply 141 and the second type power supply 142 can be used for supplying power synchronously, or when the first type power supply 141 is exhausted, the second type power supply 142 supplies power independently; or when the second type power source 142 is exhausted, the first type power source 141 supplies power alone; or the first type power source 141 can be replaced in real time, so as to supply power to the power device 100. It can be understood that first type interface is owing to set up in different positions and can adapt to the power of different models, and its suitability is fabulous, can peg graft the battery package of most models on the market according to the environment that the operating mode is injectd to increase power device 100's duration, guarantee power device 100 continuous operation.

As shown in fig. 4 to 5, the housing 11 includes a first housing 114 and a second housing 115. The first housing 114 is a base of the power device 100, and the second housing 115 is a main body for accommodating the motor 12 and the control unit 13. The second housing 115 is disposed on the upper side of the first housing 114, and the first housing 114 further at least partially encloses the second housing 115. Here, the first connection surface 102 and the second connection surface 103 are actually provided on the second housing 115. The first housing 114 is made of a first material and the second housing 115 is made of a second material. In the present embodiment, the control assembly 13 is also configured to be at least partially connected to the first housing 114 and capable of dissipating heat through the first housing 114. Specifically, the thermal conductivity of the first material is greater than the thermal conductivity of the second material. When the control assembly 13 is disposed in connection with the first housing 114, heat generated during operation of the control assembly 13 can be at least partially transferred to the first housing 114 by heat conduction and dissipated through the first housing 114. It should be explained here that the connection between the control component 13 and the first housing 114 is not limited to a fixed connection, a detachable connection or other connection in the conventional sense, and the control component 13 is in contact with the first housing 114, or the distance between the control component 13 and the first housing 114 is smaller than a preset value, and the heat on the control component 13 can be radiated onto the first housing 114 and can be dissipated through the first housing 114, which can be regarded as the connection between the control component 13 and the first housing 114. The first housing 114 has a thermal conductivity of 80W/(m × K) or more, which can preferably dissipate heat from the control unit 13.

As one implementation, the tensile strength of the first type of material is greater than the compressive strength of the second type of material. Specifically, the tensile strength of the first type material is set to 225Mpa or more and 350Mpa or less, and the tensile strength of the second type material is set to 56Mpa or more and 215Mpa or less. Here, the surface area of the outer surface of the power unit 100 is S1, the surface area of the outer surface of the first casing 114 after the first casing 114 is assembled to the power unit is S2, and the ratio of the outer surface area S1 of the entire power unit 100 to the outer surface area S2 of the first casing 114 is 1 or more and 2 or less. Further, the ratio of the external surface area S1 of the whole power device 100 to the external surface area S2 of the first housing 114 is greater than or equal to 1.5 and less than or equal to 2. With such an arrangement, on the one hand, metal materials can be saved, and on the other hand, the power unit 100 can have sufficient strength and a metallic texture in appearance. In fact, the first casing 114 extends through the entire power device 100 in the front-rear direction, and also extends through the entire power device 100 in the left-right direction, so that the base of the entire power device 100 is covered by the first casing 114 and extends at least partially in the up-down direction, thereby ensuring the strength of the entire base of the power device 100.

The first housing 114 is made of a metal material, and the second housing 115 is made of plastic. By providing a combination of two materials, the strength of the base can be ensured on the one hand, and the weight of the entire power plant 100 can be reduced on the other hand, thereby optimizing the configuration of the power plant 100. In addition, the first casing 114 has a first mass M1, the second casing 115 has a second mass M2, and the ratio of the first mass to the second mass is 3 or more and 5 or less.

In the present embodiment, the control unit 13 of the power unit 100 is also assembled as a single unit so as to be mounted to the base. Specifically, the circuit board 131, the heat sink 132, the main board, the power management board, and the like have been mounted as a single body before the power unit 100 is assembled, and the control unit 13 is mounted as a single body into the accommodation space 113 when assembly is required. Thus, when the control assembly 13 fails, it can be entirely removed for repair, thereby optimizing the serviceability of the power plant 100.

Fig. 10 shows a power plant 200 showing a second embodiment. As shown in fig. 10 and 19, in the present embodiment, the power unit 200 may have the same structure of the motor 22, the control unit 23, and the power supply unit 24 as in the first embodiment. The portions of the first embodiment that are compatible with those of the present embodiment can be applied to the present embodiment, and only the differences between the present embodiment and the first embodiment will be described below.

As shown in fig. 11 to 13, in the present embodiment, the housing 21 includes a first housing 211 and a second housing 212. The power supply assembly 24 includes a first type power supply 241 and a second type power supply 242. Wherein the first type power supply 241 is further provided with a protective cover 25. The protective cover 25 is provided to be rotatable about a rotation shaft 212 b. Specifically, the rotation shaft 212b is provided on the second housing 212 and extends along the first straight line 201. The second housing 212 further forms or is connected with an extension 212a for encasing at least part of the first type power source 241. The extension 212a is connected to or forms a rotation shaft 212 b. For clarity of explanation of the technical solution of the present invention, a front side, a rear side, a left side, a right side, an upper side and a lower side as shown in fig. 11 are also defined. Wherein the first housing 211 at least partially encloses the lower side and the rear side of the first type power source 241. And the protective cover 25 at least partially covers the upper and rear sides of the first type power source 241. That is, the rear side of the first type power source 241 is covered with the whole of the protective cover 25 and the extension portion 212 a. In fact, the first housing 211 may not be formed with the extension portion 212a, i.e., the protection cover 25 extends from the bottom to the top and can cover the entire rear and upper sides of the first type power source 241. The distribution of the first housing 211 and the protective cover 25 is not described herein, as long as at least partially covering the rear side of the first power source 241 can be achieved. In the present embodiment, the protective cover 25 includes a first cover 251 and a second cover 252. The first cover 251 is made of a first material, the second cover 252 is made of a second material, and the first cover 251 and the second cover 252 are fixedly connected. Specifically, the first cover 251 is made of a rubber or plastic member, and the second cover 252 is made of a metal member, preferably stainless steel or aluminum alloy. The first housing 251 and the second housing 252 are connected by screws or rivets and can be connected as a whole, i.e., they are substantially identical in shape and appearance, so as to be able to fit together effectively. Through the safety cover 25 that adopts two kinds of material combinations to form, can increase the intensity of safety cover 25 on the one hand, on the other hand through setting up materials such as rubber spare or working of plastics, can increase power device 200 and fall or when colliding, the buffering of safety cover 25 and contact surface. The first housing 211 is also formed with a connection member 219 for connecting the protection cover 25. Specifically, the connection assembly 219 may be a snap assembly 219 capable of forming a snap connection with the protective cover 25, and may also be a magnetic member capable of attracting the second cover 252. A buffer is also formed or attached around the connection member 219 to prevent loud noise from being generated when the protection cover 25 is attached to the connection member 219.

In this embodiment, the power unit 200 actually includes three-part housings, i.e., a first housing 211, a second housing 212, and a protective cover 25. The power device 200 is designed in the above manner to realize multi-stage arrangement of the power device 200, that is, based on the base of the first housing 211, the main body of the second housing 212, and the protective cover 25, so that the structure of each part of the power device 200 is optimized, that is, the requirements of the base on strength, the requirements of the main body on shape, the requirements of the protective cover 25 on position, connection manner, and the like are met. In addition, the modularization of the production and assembly of the power device 200 is facilitated, and the production and assembly mode is simplified.

As shown in fig. 14, in a straight line direction extending in the up-down direction, a projection of the power unit 200 in a plane perpendicular to the straight line in the straight line direction is substantially polygonal and substantially symmetrical with respect to a symmetrical plane or a symmetrical straight line. It should be noted that the projection of the power unit 200 in the above-mentioned plane may be a regular shape, or may be an irregular shape that tends to be a regular shape, which generally meets the assembly requirements. Through the arrangement, the power device 200 can be balanced uniformly, and production and assembly are facilitated.

As shown in fig. 11, in this embodiment, the power device 200 further includes a first switch 26 for controlling the power supply assembly 24 to be powered on or off. An indicator light 261 for displaying the current status of the power supply assembly 24 is also provided around the first switch 26. It will be appreciated that the indicator light 261 may be disposed in other positions relative to the first switch 26, including symmetrically about the first switch 26, on a side of the first switch 26 or away from the first switch 26, so long as the indicator light 261 is within the visual range of the user when the first switch 26 is activated to power up the power supply assembly 24. In fact, the first switch 26 is also provided on an outer surface of the first housing 211 that can be activated, and is located within the visible range. It should be explained here that the indicator light 261 can be a part of the first switch 26, or can be regarded as two parts separate from the first switch 26. The indicator lamp 261 may be any lamp as long as it can restrict the state of the power supply unit 24 when the first switch 26 is triggered.

Specifically, indicator light 261 can display a different color or shape of light depending on the current state of power assembly 24. In one implementation, the indicator lights 261 are distributed around the first switch 26 and are annular, so that when the first switch 26 is triggered, the indicator lights 261 distributed around the first switch 26 can clearly reflect the current state of the power supply assembly 24. In practice, the power supply assembly 24 typically includes "over temperature", "under voltage", "over load", "normal", etc. operating conditions. And the above states each require the user to respond to the current power supply assembly 24 by a different operation to avoid damage to the power supply assembly 24. Therefore, by arranging the indicator light 261, the user can be timely reminded of dealing with the current state of the power supply assembly 24, and the service life of the power device 200 is prevented from being affected by damage of the power supply assembly 24 or circuit damage. More specifically, the indicator lamp 261 is electrically connected to the power supply unit 24, and the first switch 26 is also electrically connected to the power supply unit 24. A power management board (not shown) is also connected between the indicator light 261 and the power supply module 24, i.e. the power management board is electrically connected to both the indicator light 261 and the power supply module 24. The power management board is also electrically connected to the first switch 26. When the first switch 26 is triggered and the power supply assembly 24 is powered on, the power management board collects current status information of the power supply assembly 24 and transmits the status information to the indicator light 261, and the indicator light 261 reflects different colors or different shapes of lights according to the status information. In this embodiment, the indicator light 261 is also configured to display different colors of light and to flash at different frequencies when the power supply assembly 24 is in different states. Specifically, when the power supply assembly 24 is in the "over-temperature" state, the indicator light 261 displays a yellow light and is normally on; when power supply assembly 24 is in the "low voltage" state, indicator light 261 appears red and flashes; when the power supply assembly 24 is in the "overload" state, the indicator light 261 displays a yellow light and flashes; when power supply assembly 24 is in the "normal" state, indicator light 261 is green and is normally on.

In the present embodiment, the power unit 200 further comprises a second switch 27, the second switch 27 being arranged for adjusting the rotational speed of the motor 22. A second switch 27 is also provided on an outer surface of the housing 21 that can be activated. Specifically, the second switch 27 is provided on the upper surface of the second housing 212, and is provided in a knob shape, which can be rotated to adjust the rotation speed of the motor 22.

As shown in fig. 10, 16 and 17, the power unit 200 is further provided with a third switch 28, and the third switch 28 is provided for starting the motor 22. The third switch 28 includes an operable operating member 281 and a trigger 282 that can be triggered. Wherein the operation component 281 can be operated by a user to trigger the trigger 282. Specifically, the operation unit 281 includes an operation member 281a and a rotation member 281b, and the trigger 282 includes a trigger part 282a and an elastic part 282 b. The operating member 281a is connected to the rotating member 281b and can control the rotating member 281b to rotate around a rotating shaft. The rotating member 281b has a first position at or near the trigger 282 and a second position away from the trigger 282. When the rotator 281b is at the first position, the trigger 282a is not triggered, and the motor 22 is turned off. When the rotating member 281b is located at the second position, the triggering portion 282a is triggered, and the motor 22 is powered on and starts to operate. Specifically, the trigger part 282a is provided as a hall element, and the rotor 281b is provided with a magnetic member that cooperates with the hall element. When the magnetic member comes into contact with the hall element, the power supply circuit of the motor 22 is turned on, and the motor 22 starts to operate. It is understood that the trigger 282a may be provided with other switches, so long as the power supply circuit of the motor 22 is turned on when the trigger is triggered, and the details are not described herein. More specifically, one end of the elastic element is connected to the rotating element 281b, and the other end is connected to a connecting end close to the triggering portion 282a, and a preload is provided between the rotating element 281b and the operating element 281 a. Here, the operating member 281a needs to overcome the elastic force of the elastic member when being operated to move the rotating member 281b from the first position to the second position, and the rotating member 281b is returned to the first position by the elastic force of the elastic member when the operating member 281a is released. It is understood that the operation member 281a may be provided to be directly connected to the rotation member 281b by a cable, thereby facilitating a remote operation; and can also be set to be controlled by the electronic control unit, which is not described in detail here as long as the device can be extended to a preset position and operated.

As shown in fig. 18, in the present embodiment, the motor 22 includes a motor shaft 221 including a first drive portion 222 and a second drive portion 223 capable of outputting a plurality of sets of power. That is, when the power plant 200 is connected to the implement 30, it can output a plurality of sets of power, thereby satisfying the demands of the implement 30 for different powers. Taking a mower as an example, a hand-push type mower generally needs to satisfy a mowing function and a self-propelled function, and the mowing function and the self-propelled function belong to two different functions which need two different forms of power driving. The first driving part 222 may be connected to the first transmission part 224 to output the first transmission force, and the second driving part 223 may be connected to the second transmission part 225 to output the second transmission force. As an implementation, the mowing mechanism can also be directly connected to the first driving portion 222, and the self-propelled mechanism needs to be connected to the second driving portion 223 through a transmission mechanism. As one implementation, the motor shaft 221 includes a first end 226 and a second end 227. The first driving portion 222 is disposed at the first end 226, is fixedly connected to the motor shaft 221, and is capable of connecting the first transmission portion 224 to directly transmit the driving force of the motor shaft 221 to the mowing element. A second drive portion 223 is disposed between the first end 226 and the second end 227 and is configured to cooperate with the second transmission portion 225 to change the operational configuration of the second drive portion 223. Specifically, the first driving portion 222 is provided with an external thread structure capable of fixing the first transmission portion 224, and the first transmission portion 224 is provided with an internal thread structure capable of being connected with the first driving portion 222. Here, for the first transmission portion 224, when the first driving portion 222 is used to directly drive the working attachment, the first transmission portion 224 may not be provided; in other words, even if the first driving part 222 directly drives the working attachment, the connection for connecting the working attachment to the first driving part 222 may be regarded as the first transmission part 224. The second driving portion 223 is provided as a gear structure or a pulley structure that can transmit power, and is not limited herein. The second transmission section 225 includes a transmission belt 225a, a flywheel 225b, and an output end 225 c. The belt 225a connects the second driving unit 223 and the output end 225c, and can transmit the power of the second driving unit 223 to the output end 225 c. The flywheel 225b adjusts the transmission efficiency of the transmission belt 225a by pressing or releasing the transmission belt 225 a. Specifically, when the flywheel 225b presses the transmission belt 225a, the transmission belt 225a can be more closely matched with the second driving part 223, so that more power can be transmitted to the output end 225 c; when the flywheel 225b loosens the belt 225a, the belt 225a can transmit less power to the output 225 c.

It is understood that the first driving portion 222 and the second driving portion 223 may be provided as separate driving portions, that is, the first driving portion 222 and the second driving portion 223 are provided in a superposition manner, and the first transmission portion 224 and the second transmission portion 225 are simultaneously connected to the first driving portion 222 or the second driving portion 223. Only the first driving part 222 or the second driving part 223 may be provided, and in this case, the first transmission part 224 and the second transmission part 225 may be simultaneously connected to the first driving part 222 or the second driving part 223. It is also possible to provide that the first transmission 224 at least partially coincides with the second transmission 225, so that the first transmission 224 and the second transmission 225 can be connected to the first drive 222 or the second drive 223 simultaneously. It should be noted that even if the first transmission part 224 and the second transmission part 225 are at least partially overlapped, the two types of transmission forces can be output without interference between the two.

With the above arrangement, the motor 22 can output power in a blocked form, and can distribute power reasonably, simplifying the structure of the power unit 200, and diversifying the functions of the power unit 200. In addition, in the actuator 30 capable of outputting a plurality of functions, the power unit 200 having a plurality of functions also satisfies the function output of the actuator 30 and avoids the need to install other power components. It will be appreciated that the power plant 200 may also be arranged to output only one type of power, thereby enabling the power plant 200 to be adapted to different types of actuating devices 30, resulting in a more adaptable power plant 200.

As shown in fig. 12, 19 and 20, the power device 200 further includes an air inlet net 218 disposed at the air inlet 213 or the air outlet 214, and the air inlet net 218 is of a quick release structure so as to be easily replaced or cleaned. Specifically, the air inlet 213 and the air outlet 214 are provided at a position of the housing 21 away from the motor shaft 221, that is, at a position on the upper side of the housing 21. Through such an arrangement, the air inlet 213 or the air outlet 214 can be away from the working accessory connected to the motor shaft 221, so that the debris or dust generated by the working accessory during working can be prevented from entering the air inlet 213 or the air outlet 214. In addition, a limiting groove 215 is formed inside the housing 21, and the air inlet net 218 is fitted into the limiting groove 215 through a limiting pin 216 to be attached to the housing 21 or detached from the housing 21. Specifically, the housing 21 is formed with a flat hole 217 through which the stopper pin 216 passes, and the stopper pin 216 is formed with a stopper portion. When the stopper pin 216 passes through the flat hole 217 at a first angle, the stopper portion is parallel to the flat hole 217 at this time, and thus can pass through the flat hole 217. When the limiting pin 216 rotates to the second angle, the limiting portion is perpendicular to the flat hole 217 and cannot penetrate through the flat hole 217, so that the air inlet net 218 can be limited.

In general, the power plant 200 is an external power unit, which includes integration of power output, power supply, control, and the like. For some actuating devices 30, in order to meet the requirements of the operating conditions, they need to output a large amount of power, and to maintain a long endurance time, and they need to be convenient for users to operate. The power plant 200 disclosed in the prior art cannot meet the above requirements at the same time. In fact, some power plants 200 cannot meet high power requirements in order to meet long endurance. For some power devices 200 capable of outputting higher power, the endurance requirement and the heat dissipation requirement cannot be met, so that the time for keeping outputting higher power is very short, and the actual requirement of the actuating device 30 cannot be met. Table 1 shows the relationship between the maximum output power of the power plant 200, the weight and the power-to-weight ratio thereof.

TABLE 1

In the present embodiment, the maximum output power P of the motor 22 is set to 1500W or more and 5500W or less, and when the power unit 200 is not mounted with the power module 24, the total mass M1 of the power unit is 8kg or more and 14.5kg or less, and the ratio of the maximum output power P to the total mass M1 of the power unit is 103.5W/kg or more and 687.5W/kg or less. When the ratio of the maximum output power P to the mass M1 of the entire machine is not less than 120W/kg and not more than 500W/kg, the entire system of the power plant 200 has the capability of continuously outputting the optimum high power level, and has a longer service life.

In the present embodiment, the mass of the power unit 200 is more preferably 10kg or more and 12kg or less, and the maximum output power of the motor 22 is more preferably 2000W or more and 4000W or less. The power module 24 also has a predetermined mass M2, and M2 is set to 1.3kg or more and 8kg or less. The power supply module 24 includes a first type power supply 241 and a second type power supply 242, and the power device 200 includes a function capable of mounting the first type power supply 241 or the second type power supply 242, or both the first type power supply 241 and the second type power supply 242 and operating normally, so that the power device 200 has a weight of 9.3kg or more and 22.5kg or less after the power supply module 24 is mounted.

In the present embodiment, the power plant 200 is mounted to the actuator 30 to output power, and in order to adapt the power plant 200 and avoid that the whole system cannot normally operate when the power plant 200 is mounted to the actuator 30, the actuator 30 further includes a mass M3, and the ratio of the mass M1 of the power plant 200 to the mass M3 of the actuator 30 is set to be greater than or equal to 0.25 and less than or equal to 0.46, so that when the power plant 200 is mounted to the actuator 30, the whole system has high stability and can continuously and reliably output power. Further, when the ratio of the mass M1 of the power plant 200 to the mass M3 of the implement 30 is 0.3 or more and 0.4 or less, the entire system has higher stability when the power plant 200 is mounted to the implement 30, and can output power more continuously and reliably.

In this embodiment, a cutting attachment is attached to the motor shaft 221, and the cutting attachment is driven by the motor shaft 221 and can rotate around the motor shaft 221. The cutting attachment has a radius of rotation R which is greater than or equal to 200mm and less than or equal to 325 mm. The maximum output power P of the motor 22 and the rotation radius R of the riding machine are not less than 300KW · mm and not more than 1788KW · mm.

Furthermore, with the above arrangement, the power unit 200 is more concentrated in the center of gravity and more stable as a whole when mounted to the actuator device 30. In fact, the power unit 200 is arranged substantially symmetrically with respect to the first plane. As shown in fig. 21, when the power unit 200 is attached to the actuator 30, the mower is exemplified here by a mower having a traveling unit 29, a main body, and a handle. When the power unit 200 is mounted to the main body, the distance of the first plane from the left edge of the main body is greater than or equal to 80mm and less than or equal to 150mm in the left-right direction perpendicular to the first plane; the distance between the power device 200 and the right edge of the main body is more than or equal to 80mm and less than or equal to 150 mm. Through the arrangement, the power device 200 can be arranged at a preset position of the main body, and after the power device 200 is combined with the main body, the gravity center of the power device 200 is consistent with that of the main body, or the gravity center of the combined body of the power device 200 and the main body is positioned between the walking assemblies 29, so that the power device and the combined body are more stable in the operation process. Specifically, the power plant 200 itself has a first center of gravity P1, the actuator 30 has a second center of gravity P2, and the distance between the first center of gravity P1 and the second center of gravity P2 in the advancing direction of the actuator 30 is 0 or more and 335mm or less. Further, the distance between the first center of gravity P1 and the second center of gravity P2 in the advancing direction of the execution apparatus 30 is 0mm or more and 200mm or less. It can be understood that when the power device 200 is connected to the implement 30 and the center of gravity distance between the two is set within the above-mentioned size range, the overall center of gravity of the implement 30 is centered during the traveling process, and the operation condition is stable, and the implement will not overturn when passing through a pit or a slope. Further, the power unit 200 includes a first plane extending substantially in the front-rear direction, and the power unit 200 is disposed substantially symmetrically with respect to the first plane. The first center of gravity P1 is at a distance of 0 or more and 80mm or less from the first plane in the left-right direction perpendicular to the first plane 101. The actuator 30 is disposed substantially symmetrically with respect to the first plane, and the second center of gravity P2 is at a distance of 0 or more and 100mm or less from the first plane in the left-right direction perpendicular to the first plane.

Furthermore, the walking assembly 29 includes a first walking assembly 291 and a second walking assembly 292. Wherein the first walking assembly 291 is located at the front side of the advancing direction of the mower, and the second walking assembly 292 is located at the rear side of the advancing direction of the actuating device 30. The first walking assembly 291 has a first axis of rotation 202 and the second walking assembly 292 has a second axis of rotation 203. When the power unit 200 is mounted to the main body, the first center of gravity of the power unit 200 is spaced from the first rotation axis 202 by a distance of 74mm or more and 465mm or less in the advancing direction of the actuator 30. The second center of gravity of the actuator 30 is at a distance of 0mm or more and 200mm or less from the second rotation axis 203. With this arrangement, the stability of the combination of the power unit 200 and the implement 30 during traveling can be further improved after the power unit is attached to the implement.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. A power plant for connection to a garden or outdoor power performing apparatus, comprising:

a housing formed with an accommodating space;

a motor at least partially disposed within the receiving space;

a control assembly for controlling the motor;

the shell comprises a first shell made of a first material and a second shell made of a second material; the control assembly is at least partially coupled to the first housing, and the first type of material has a thermal conductivity greater than the second type of material.

2. The power plant of claim 1,

the first material is made of a metal material, and the second material is made of a plastic material.

3. The power plant of claim 1,

the outer surface of the shell is provided with a first surface area S1, the second shell is provided with a second surface area S2 after being installed on the power device, and the ratio of the first surface area S1 to the second surface area S2 is greater than or equal to 1.5 and smaller than or equal to 2.

4. The power plant of claim 1,

the control assembly is fixedly connected with the first shell.

5. The power plant of claim 1,

the distance between the control assembly and the first shell is smaller than a preset value.

6. The power plant of claim 1,

the control assembly comprises a first control panel arranged to extend substantially in a first plane and a second control panel arranged to extend substantially in a second plane; the power plant further includes a central plane extending substantially in a fore-aft direction, at least one of the first plane and the second plane intersecting the central plane.

7. The power plant of claim 6,

the first control plate and the second control plate are intersected and in a V shape.

8. The power plant of claim 1,

further comprising a power supply assembly for driving the motor, the housing further comprising a connection surface for connecting at least part of the power supply assembly.

9. A power plant for connection to a garden or outdoor power performing apparatus, comprising:

a housing formed with an accommodating space;

a motor at least partially disposed within the receiving space;

a control assembly for controlling the motor;

the housing comprises a housing portion having a thermal conductivity of 80W/(m K) or more, the control assembly being at least partially connected to the housing portion.

10. The power plant of claim 9,

the shell comprises a first shell made of a first material and a second shell made of a second material; the first shell forms the shell portion, and the heat conductivity coefficient of the first type of material is larger than that of the second type of material.