CN107394869A - A kind of portable power station - Google Patents
A kind of portable power station Download PDFInfo
- Publication number
- CN107394869A CN107394869A CN201710734824.5A CN201710734824A CN107394869A CN 107394869 A CN107394869 A CN 107394869A CN 201710734824 A CN201710734824 A CN 201710734824A CN 107394869 A CN107394869 A CN 107394869A
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- CN
- China
- Prior art keywords
- handle
- casing
- power station
- portable power
- station according
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Abstract
The present invention is a kind of portable power station, including by casing, the device for generating electric energy that is contained in the casing and be arranged at that the output slab on the casing surface is collectively forming have length L, width W and height H cuboid framework, the top that length L and width W in the cuboid framework is formed is provided with door handle device, the door handle device is by handle A, handle B and handle C compositions, length L directions of the handle A along cuboid framework is set, the both sides of handle B and handle C separation the handle A are simultaneously set along the width W directions of cuboid framework, the handle A, handle B and handle C is arranged in I-shaped and is connected with cabinet top.The door handle device of the present invention, power station can be very easily carried, carrying is more laborsaving and safe, substantially increases the portability in power station, and effectively reduces complete machine height, convenience in transport and storage.
Description
Technical field
The invention belongs to portable power station technical field, and in particular to be built-in with the Portable power source of battery
（Mobile Power）, or all kinds of portable power generation units, particularly inverter generator group（Inverter generator）.
Background technology
Portable power station mainly includes two major class products：Portable power source and generating set.It is portable power source internal battery, inverse
Become device and electric-control system, can be charged a battery from civil power, solar energy or generator, inverter can be by the direct current of battery
It is converted into alternating current to use for various electrical appliances, can also be configured the direct current output interface of various voltages certainly.Generating set is main
It is made up of engine, generator and electric-control system, the chemical energy of fuel oil can be converted into electric energy, there are a variety of outputs of AC and DC
Interface.Portable power station has a wide range of applications, such as：Family or unit stand-by power supply, field work, emergence power, disaster
Many occasions such as treatment, open air life and travelling, yacht and the power autonomous, mobile communication base station of vehicle.
Conventional 2kW or so portable power station weight typically in more than 20kg, is carried and carried or be very inconvenient.Such as figure
Shown in 1, representative prior art solution is in patent CN200710020726：Set and send out at the top of generating set
Motor length direction parallel handle a and handle b, and setting is vertical with generator length direction between handle a and handle b
Handle c, when needing to carry generator 2, it can catch handle a and handle b that generator is lifted into carrying respectively by two people.It will not make
Optimal grasp-point into generator curving is located at the surface of generator center of gravity, it is clear that and handle c should not be set here, and otherwise two
People can not grasp handle a and handle b when carrying generator in Best Point, generator height curving can be caused, due to grasping direction
It is consistent with height curving direction, grasp the danger for arduously, occurring that rubber sleeve is de- when serious.But when one-man carries,
Generator can only be carried by grasping handle c, because handle c can not be arranged on optimal grasp-point, i.e. handle c is not in generator weight
The surface of the heart, when holding handle c, height curving, and handle c and generator length L directions certainly will occurs in generator
Vertically, also can not solve the problems, such as front and rear curving by adjusting the grasp-point on handle c, this brings additional difficulty to carrying.
In addition, hand grasping handle c direction is also vertical with the direction of generator length when a people carries, and operator is towards generating electricity
Machine length direction advance, cause grasp generator arm distortion, arm so bear a heavy burden it is relatively elaborate, carry it is very inconvenient.
In addition, the handle c of existing generating set due to apart from generator front and back end farther out, when operator is want from generating
Machine one end can only be by handle a or handle b end when lifting generator and it is necessary to while lifted with two hands, otherwise also can
Generator curving is caused, operation is very inconvenient, and this is also a shortcoming of prior art.
The present invention is exactly to be conceived to the deficiency of existing portable power station, and providing one kind for portable power station more reasonably carries
Handle.
The content of the invention
The object of the present invention is to overcome the problems of the prior art, there is provided a kind of portable power station.
To realize above-mentioned technical purpose and the technique effect, the present invention is achieved through the following technical solutions：
A kind of portable power station, including by casing, the device for generating electric energy being contained in the casing and it is arranged at the machine
The cuboid framework with length L, width W and height H that the output slab on shell surface is collectively forming, in the cuboid framework
In the top that is formed of length L and width W be provided with door handle device, the door handle device is by handle A, handle B and handle C groups
Length L directions into, the handle A along cuboid framework are set, the both sides of handle B and handle C separation the handle A and along length
The width W directions of cube framework are set, and the handle A, handle B and handle C are arranged in I-shaped and be connected with cabinet top.
Further, the handle A is arranged at the depressed area among cabinet top, and the handle B and handle C are set respectively
Put the preceding depressed area in cabinet top and rear depressed area.
Further, the casing includes left casing, right casing, front panel, rear board and handle cover, the handle A with
Handle cover is connected, and the handle cover is connected with left casing and/or right casing, one end and the left casing top of the handle B and handle C
Portion is connected, and handle B and handle the C other end are connected with right cabinet top.
Further, the bottom surface of the depressed area is provided with handle base, and the handle A and handle base are by axis of rotation
Link together, handle A can be at least put into the depressed area on handle cover in the stroke of axis of rotation, handle A around
During axis of rotation to vertical state, for lifting casing.
Further, after the handle A rotations are put into depressed area, handle A maximum projecting height is not higher than casing
Top surface.
Further, spring is provided between the handle A and handle cover, the spring is socketed in rotating shaft, for carrying
For making handle A be automatically rotated to the elastic potential energy of depressed area.
Further, the handle base and rotating shaft are metal material.
Further, handle B is respectively equipped with the handle B and handle C and handle C, the handle B and handle C are
Soft material, opening can be deformed during stress and is grasped with facilitating.
Further, the device for generating electric energy includes engine, generator and electric-control system, and the engine connection is simultaneously
Generator output electric energy is driven, and alternating current and/or direct current are exported by output slab under the control of electric-control system.
Further, the device for generating electric energy includes battery and electric-control system, is charged a battery by the external world, electricity
Control system will export alternating current and/or direct current after the direct current conversion process of battery by output slab.
The beneficial effects of the invention are as follows:
The present invention sets the door handle device that I-shaped arranges, either a people or two people operation at the top of portable power station,
Power station can be very easily carried using door handle device, carrying is more laborsaving and safe, substantially increases the portability in power station,
By the way that door handle device to be arranged on to the depressed area of cabinet top, complete machine height, convenience in transport and storage are effectively reduced.
Brief description of the drawings
Fig. 1 is existing generating set shape assumption diagram；
Fig. 2 is the profile elementary contour of this patent portable power station and the stereogram of structure；
Fig. 3 is the profile elementary contour of this patent portable power station and the top view of structure；
Fig. 4 is the embodiment stereogram that this patent is applied to portable power source；
Fig. 5 is the embodiment top view that this patent is applied to portable power source；
Fig. 6 is the embodiment stereogram that this patent is applied to generating set；
Fig. 7 is the sectional view of this patent embodiment；
Fig. 8 is this patent handle A partial enlarged drawing；
Fig. 9 is this patent handle B sectional view；
Figure 10 is the embodiment explosive view that this patent is applied to portable power source.
Label declaration in figure：1. portable power station, 2. existing generating sets, 201. handle a, 202. handle b, 203. handles
C, 3. door handle devices, 301. handle A, 3011. rotating shafts, 3012. springs, 302. handle B, 3021. handle B, 303. handle C,
3031. handle C, 4. casings, 401. left casings, 402. right casings, 403. front panels, 404. rear boards, 405. handle covers,
4051. depressed area, 4052. handle bases, depressed area before 406., depressed area after 407., 408. top surfaces, 5. output slabs,
6. device for generating electric energy, 7. pouring orifices, 8. charging input ports.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
As shown in Fig. 2 to Figure 10, portable power station of the invention mainly includes two major class products：Portable power source and generator
Group.For portable power source, the device for generating electric energy 6 of portable power station 1 mainly includes battery, inverter and electric-control system
Deng can be charged a battery from civil power, solar energy or generator, inverter can be by the converting direct-current power into alternating-current power of battery
Exported by output slab 5, can also configure the direct current output interface of various voltages on output slab certainly.For generating set
For, the device for generating electric energy 6 of portable power station 1 mainly includes engine, generator and electric-control system, can be by the chemistry of fuel oil
Electric energy can be converted into, inverter is also included for digital electricity generating, during can generator be exported at various speeds
Frequency alternating current is converted into the industrial-frequency alternating current of voltage stabilization, there is a variety of output interfaces of AC and DC on output slab 5.
As shown in Figures 2 to 7, the elementary contour of portable power station 1 is a shape for occupying rectangular parallelepiped space, its length
L is more than or equal to width W, and the device for generating electric energy 6 of portable power station 1 is housed inside in casing 4, and device for generating electric energy 6 is wrapped
Engine or battery for containing etc. are connected with bottom of shell, and the front portion of casing 4 is provided with output slab 5.For generator
For group, pouring orifice 7 is additionally provided with cabinet top；For portable power source, charging input is additionally provided with cabinet top
Mouth 8.
As shown in Fig. 2 to 10, the length L and width W tops formed in the cuboid framework of portable power station 1 are set
Door handle device 3 is equipped with, the door handle device 3 of this patent is made up of 3 independent handles, is respectively：Handle A, handle B and handle C.
Wherein handle A is longitudinally arranged along the length L directions of portable power station 1, i.e. handle A handle direction and the length of portable power station 1
It is consistent to spend L directions.Handle B and handle C is located at handle A front and rear sides, handle B and handle C along the width W of portable power station 1
Direction lateral arrangement, the handle direction of its handle are vertical with the length L directions of portable power station 1.So, from portable electric
Stand 1 overhead view, as shown in Figure 3 and Figure 5, handle A, handle B and handle C are just arranged in I-shaped, and this 3 handles are equal
It is connected with the top of casing 4.
As shown in Figure 7 and Figure 8, in order to reduce the height of door handle device 3, handle A is arranged on the depression of the crown center of casing 4
Position 4051, handle B are arranged on the preceding depressed area 406 at the top of casing 4, and handle C is arranged on the rear depressed part at the top of casing 4
Position 407.
As shown in Fig. 4 to Figure 10, casing 4 mainly by left casing 401, right casing 402, front panel 403, rear board 404,
Hand lid 405 and lower casing composition, the handle A are connected with handle cover 405, and handle cover 405 is connected with right casing 402, certain root
According to needs, handle cover 405 can also be connected with left casing 401.The handle B and handle C one end and the left top phase of casing 401
Even, the other end is connected with the right top of casing 402.Battery, inverter and the electric-control system of portable power source are connected with lower casing, hair
Engine, generator and inverter of group of motors etc. are also connected with lower casing, and in this example, lower casing is additionally provided with roller dress
Put.
As shown in Figure 7 to 9, the handle A is connected with the handle base 4052 of the inner side of handle cover 405 by rotating shaft 3011,
In the depressed area 4051 that handle A can be put on handle cover 405 after the rotation of rotating shaft 3011（As shown in Figure 4 and Figure 5）,
Hand A around rotating shaft 3011 turn to vertical state when can be used for lift portable power station 1（As shown in Figures 6 to 9）.
As shown in Figure 7 to 9, in order to avoid door handle device 3 increases complete machine height, the handle A is around 3011 turns of rotating shaft
Depressed area 4051 can be put into after dynamic, the depth of depressed area 4051 is more than handle A thickness, therefore after handle A rotations are laid flat
It is not above the top surface 408 of casing 4.
As shown in Fig. 7, Fig. 8 and Figure 10, because portable power station 1 is heavier, and casing 4 and its handle cover 405 are typically all
Working of plastics, intensity is relatively low, in order to increase the bonding strength between handle A and casing 4, the handle base of this patent（4052）And rotating shaft
（3011）It is metal material.As shown in figs, between handle A and handle base 4052, handle A leads to handle cover 405
Cross two rotating shafts 3011 with two pairs of otic placodes holded up on handle base 4052 to be connected, also have two screws and handle on handle cover 405
Seat 4052 is connected, and considerably increases bonding strength.
As shown in figure 8, in order to facilitate user's operating handle device 3, bullet is provided between the handle A and handle cover 405
Spring 3012, spring 3012 are torsionspring, and spring 3012 is enclosed in rotating shaft 3011, and a spring pin is buckled on handle A, another
Spring pin is buckled on handle cover 405, and under the elastic force effect of spring 3012 the automatic sides of casing 402 to the right of handle A can rotate,
Depressed area 4051 can be entered by rotating to 90 degree or so from vertical state.
As shown in figures 7 and 9, in order to reduce handle B and handle C height, the handle B of the handle B and handle C and hold
It is that soft material manufactures C, such as steel band, plastics or rubber etc..Though free state lower handle B and handle C and casing 4 apart from
So close, but when in use once bear the deformable opening of pulling force, handle B and handle C and casing 4 are apart from can become very
Greatly, operator can very easily grasp.For the handle B and handle C of the present embodiment in free state, handle is highly less than casing
4 top surface 408.
The present invention uses process and principle
As shown in Figures 2 and 3, this patent is along power station length L directions（Longitudinal direction）Arrange handle A, and power station both ends with
Direction arrangement handle B and handle C vertical its length L., can be by two people when there is two people to carry power station 1 as shown in Fig. 2 to Fig. 9
Grasp handle B and handle C respectively, because handle B and handle C is vertical with power station length L directions, even if due to two people's heights and
Physical difference causes power station both ends height different, and due to it, to grasp direction vertical with height curving direction, thus the place of shaking hands is not yet
Occur slippage, two people are more laborsaving, safer when carrying.When an only people carries power station 1, handle A can be grasped and lift power station,
Because handle A can be easily arranged on directly over the center of gravity of power station, and handle A handle is consistent with generator length L directions,
Grasp-point on handle A can move forward and backward along generator as needed, can ensure grasp-point be located at power station center of gravity just on
Side, curving will not be caused when lifting power station by handle A, it is more convenient to carry.In addition, hand grasps handle A when a people carries
Direction it is consistent with the direction of generator length, that is, grasp direction it is consistent with the direction of advance of operator, will not cause grasp send out
The arm distortion of motor, is carried more laborsaving.
In addition, handle B and handle C is located at the front and back ends of generator, operator by handle B or C with a hand just
Easily generator one end can be lifted, grasping is laborsaving, will not also cause generator curving, operation is very easy.
In summary, the door handle device 3 that the present invention arranges in the top of portable power station 1 setting I-shaped, either one
People or two people operation, power station can be very easily carried using door handle device 3, carrying is more laborsaving and safe, carries significantly
The high portability in power station.By the way that door handle device 3 to be arranged on to the depressed area at the top of casing 4, complete machine height is effectively reduced,
Convenience in transport and storage, further increase value of the product.
Furthermore, it is necessary to explanation, unless stated otherwise or is pointed out, otherwise the term in claims and specification
The description such as " A ", " B ", " C " is used only for distinguishing each component, element, step etc., without being intended to indicate that each component, member
Logical relation or ordinal relation between element, step etc..
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of portable power station, including by casing（4）, be contained in the casing（4）Interior device for generating electric energy（6）And set
It is placed in the casing（4）The output slab on surface（5）The cuboid framework with length L, width W and height H being collectively forming,
Characterized in that, the top that the length L and width W in the cuboid framework is formed is provided with door handle device（3）, described
Arm device（3）By handle A（301）, handle B（302）With handle C（303）Composition, the handle A（301）Along cuboid framework
Length L directions are set, the handle B（302）With handle C（303）Live apart handle A（301）Both sides and along cuboid framework
Width W directions are set, the handle A（301）, handle B（302）With handle C（303）It is arranged in I-shaped and and casing（4）
Top is connected.
2. portable power station according to claim 1, it is characterised in that the handle A（301）It is arranged at casing（4）Top
Depressed area among portion（4051）, the handle B（302）With handle C（303）It is separately positioned on casing（4）Top it is preceding recessed
Fall into position（406）With rear depressed area（407）.
3. portable power station according to claim 1, it is characterised in that the casing（4）Including left casing（401）, it is right
Casing（402）, front panel（403）, rear board（404）And handle cover（405）, the handle A（301）With handle cover（405）Phase
Even, the handle cover（405）With left casing（401）And/or right casing（402）It is connected, the handle B（302）With handle C
（303）One end and left casing（401）Top is connected, handle B（302）With handle C（303）The other end and right casing（402）
Top is connected.
4. portable power station according to claim 3, it is characterised in that the depressed area（4051）Bottom surface be provided with handle
Hand seat（4052）, the handle A（301）With handle base（4052）Pass through rotating shaft（3011）It is pivotally connected together, handle A
（301）Around rotating shaft（3011）Handle cover can be at least put into the stroke of rotation（405）On depressed area（4051）It is interior, handle
A（301）Around rotating shaft（3011）When turning to vertical state, for lifting casing（4）.
5. portable power station according to claim 4, it is characterised in that the handle A（301）Rotation is put into depressed area
（4051）Afterwards, handle A（301）Maximum projecting height be not higher than casing（4）Top surface（408）.
6. portable power station according to claim 4, it is characterised in that the handle A（301）With handle cover（405）It
Between be provided with spring（3012）, the spring（3012）It is socketed on rotating shaft（3011）On, make handle A for providing（301）Automatically
Rotate to depressed area（4051）Elastic potential energy.
7. portable power station according to claim 4, it is characterised in that the handle base（4052）And rotating shaft（3011）
For metal material.
8. portable power station according to claim 1 or 2, it is characterised in that the handle B（302）With handle C（303）
On be respectively equipped with handle B（3021）With handle C（3031）, the handle B（3021）With handle C（3031）It is soft material,
Opening can be deformed during stress to grab to facilitate.
9. portable power station according to claim 1, it is characterised in that the device for generating electric energy（6）Including engine,
Generator and electric-control system, the engine connects and drives generator to export electric energy, and passes through under the control of electric-control system
Output slab（5）Export alternating current and/or direct current.
10. portable power station according to claim 1, it is characterised in that the device for generating electric energy（6）Including battery
And electric-control system, charged a battery by the external world, electric-control system will pass through output face after the direct current conversion process of battery
Plate（5）Export alternating current and/or direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710734824.5A CN107394869A (en) | 2017-08-24 | 2017-08-24 | A kind of portable power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710734824.5A CN107394869A (en) | 2017-08-24 | 2017-08-24 | A kind of portable power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107394869A true CN107394869A (en) | 2017-11-24 |
Family
ID=60345750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710734824.5A Pending CN107394869A (en) | 2017-08-24 | 2017-08-24 | A kind of portable power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107394869A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819759A (en) * | 2018-06-26 | 2018-11-16 | 东莞唯度电子科技服务有限公司 | A kind of new-energy automobile Portable charging equipment |
| CN108882656A (en) * | 2018-08-31 | 2018-11-23 | 苏州圆能动力科技有限公司 | A kind of cooling structure in portable energy-storing power station |
| CN109066875A (en) * | 2018-08-31 | 2018-12-21 | 苏州圆能动力科技有限公司 | A kind of structure in portable energy-storing power station |
| CN109362191A (en) * | 2018-11-16 | 2019-02-19 | 苏州德锐朗智能科技有限公司 | A kind of casing structure of generating equipment |
| CN112074136A (en) * | 2020-09-11 | 2020-12-11 | 苏州德锐朗智能科技有限公司 | Power generation equipment casing seal structure |
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| CN202228183U (en) * | 2011-08-19 | 2012-05-23 | 浙江康思特动力机械有限公司 | Portable engine generator |
| CN204903496U (en) * | 2015-07-29 | 2015-12-23 | 北京中自宏毅科技发展有限公司 | Portable flue gas analyzer |
| CN206401397U (en) * | 2016-12-30 | 2017-08-11 | 上海沃施园艺股份有限公司 | A kind of portable battery bag |
| CN207542854U (en) * | 2017-08-24 | 2018-06-26 | 苏州德锐朗智能科技有限公司 | A kind of portable power station |
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| CN202228183U (en) * | 2011-08-19 | 2012-05-23 | 浙江康思特动力机械有限公司 | Portable engine generator |
| CN204903496U (en) * | 2015-07-29 | 2015-12-23 | 北京中自宏毅科技发展有限公司 | Portable flue gas analyzer |
| CN206401397U (en) * | 2016-12-30 | 2017-08-11 | 上海沃施园艺股份有限公司 | A kind of portable battery bag |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819759A (en) * | 2018-06-26 | 2018-11-16 | 东莞唯度电子科技服务有限公司 | A kind of new-energy automobile Portable charging equipment |
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| CN108882656A (en) * | 2018-08-31 | 2018-11-23 | 苏州圆能动力科技有限公司 | A kind of cooling structure in portable energy-storing power station |
| CN109066875A (en) * | 2018-08-31 | 2018-12-21 | 苏州圆能动力科技有限公司 | A kind of structure in portable energy-storing power station |
| CN108882656B (en) * | 2018-08-31 | 2024-02-20 | 苏州圆能动力科技有限公司 | Cooling structure of portable energy storage power station |
| CN109362191A (en) * | 2018-11-16 | 2019-02-19 | 苏州德锐朗智能科技有限公司 | A kind of casing structure of generating equipment |
| CN112074136A (en) * | 2020-09-11 | 2020-12-11 | 苏州德锐朗智能科技有限公司 | Power generation equipment casing seal structure |
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