CN218733378U - Movable energy storage power supply - Google Patents
Movable energy storage power supply Download PDFInfo
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- CN218733378U CN218733378U CN202223046767.7U CN202223046767U CN218733378U CN 218733378 U CN218733378 U CN 218733378U CN 202223046767 U CN202223046767 U CN 202223046767U CN 218733378 U CN218733378 U CN 218733378U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a portable energy storage power relates to power supply equipment, include: the lower shell is provided with a first side positioned in the X-axis direction and a second side positioned in the Y-axis direction, wherein the Y-axis direction and the X-axis direction form a certain angle, and the length of the second side is greater than that of the first side; the first side shell is vertical to the lower shell and is positioned on the first side of the lower shell in the Y-axis direction; the second side shell is vertical to the lower shell and is positioned on the second side of the lower shell in the Y-axis direction; the power conversion unit and the battery unit are sequentially arranged on the lower shell along the X-axis direction, and a channel is formed between the power conversion unit and the battery unit at intervals; the fan is arranged on the first side shell and located between the power conversion unit and the battery unit, the second side shell comprises a plurality of through holes, and when the fan works, the plurality of through holes, the channel and the fan form an air channel. The mobile energy storage power supply is convenient to carry and good in heat dissipation effect.
Description
Technical Field
The utility model relates to a power supply unit, especially portable energy storage power.
Background
The mobile energy storage power supply is a small energy storage device with a built-in battery, and can provide a power supply system for stabilizing output of alternating current and/or direct current voltage so as to match mainstream electronic equipment in the market. At present, mobile energy storage power sources exhibit explosive growth.
Because the mobile energy storage power supply faces the terminal customer, the mobile energy storage power supply naturally needs to have the following characteristics: 1. the appearance is beautiful; 2. is convenient to carry; 3. the heating value is small.
SUMMERY OF THE UTILITY MODEL
The application provides a portable energy storage power supply, includes: the lower shell is provided with a first side positioned in the X-axis direction and a second side positioned in the Y-axis direction, wherein the Y-axis direction and the X-axis direction form a certain angle, and the length of the second side is greater than that of the first side; the first side shell is vertical to the lower shell and is positioned on the first side of the lower shell in the Y-axis direction; the second side shell is perpendicular to the lower shell and is positioned on the second side of the lower shell in the Y-axis direction; the power conversion unit and the battery unit are sequentially arranged on the lower shell along the X-axis direction, and a channel is formed between the power conversion unit and the battery unit at intervals; the fan is arranged on the first side shell and positioned between the power conversion unit and the battery unit, wherein the second side shell comprises a plurality of through holes, and when the fan works, the plurality of through holes, the channel and the fan form an air channel.
Furthermore, the power conversion unit comprises a PCB and an electronic device arranged on the PCB, the PCB comprises a plurality of fixing holes, the lower shell comprises a plurality of fixing holes, and the fixing piece penetrates through the fixing holes in the PCB and the fixing holes in the lower shell so as to fix the PCB on the lower shell.
Furthermore, the power conversion unit comprises an AC/DC conversion module and a DC/DC conversion module, and is used for converting alternating current into direct current to charge the battery unit.
Furthermore, the power conversion unit comprises a DC/AC conversion module for converting the direct current from the battery unit into an alternating current to supply power to an alternating current load; the power conversion unit comprises a DC/DC conversion module used for converting the direct current from the battery unit into direct current to supply power for a direct current load.
Furthermore, the battery unit comprises a fixing frame, the fixing frame comprises four frame side walls and a partition board, the four frame side walls enclose a rectangular accommodating space, the partition board divides the rectangular accommodating space into a first rectangular accommodating space and a second rectangular accommodating space in the Z-axis direction, and the Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction.
Furthermore, the lengths of the first rectangular parallelepiped receiving space and the second rectangular parallelepiped receiving space extend along the Y axis direction, the widths of the first rectangular parallelepiped receiving space and the second rectangular parallelepiped receiving space extend along the X axis direction, and the heights of the first rectangular parallelepiped receiving space and the second rectangular parallelepiped receiving space extend along the Z axis direction.
Furthermore, the battery unit includes a first battery module and a second battery module, the first battery module is accommodated in the first rectangular parallelepiped accommodation space, and the second battery module is accommodated in the second rectangular parallelepiped accommodation space.
Furthermore, the first to third frame side walls of the four frame side walls include protruding walls extending into the rectangular parallelepiped receiving space, and when the first battery module is received in the first rectangular parallelepiped receiving space and the second battery module is received in the second rectangular parallelepiped receiving space, the protruding walls fix the first battery module and the second battery module in the first rectangular parallelepiped receiving space and the second rectangular parallelepiped receiving space, respectively.
Furthermore, the fixing frame comprises a plurality of fixing holes, the lower shell comprises a plurality of fixing holes, and the fixing piece penetrates through the fixing holes in the fixing frame and the fixing holes in the lower shell so as to fix the fixing frame on the lower shell.
Furthermore, the power conversion device further comprises a control board, wherein the control board is arranged in parallel with the second side shell and is positioned between the second side shell and the power conversion unit as well as between the second side shell and the battery unit.
Drawings
Fig. 1 is an exploded view of a mobile energy storage power supply according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of the mobile energy storage power supply device according to an embodiment of the present application after the upper housing is removed.
Fig. 3 is a schematic structural diagram of the mobile energy storage power supply apparatus according to an embodiment of the application after the upper housing and the side housing are removed.
Fig. 4 is a schematic structural diagram of a battery holder according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a battery cell according to an embodiment of the present application.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
An embodiment of the present application provides a mobile energy storage power source. The mobile energy storage power supply is convenient to carry, is especially suitable for being held by hands, namely the mobile energy storage power supply is flat and is convenient to grasp, pinch or hold by hands. The height of the mobile energy storage power supply is generally less than the thickness of a hand that can be grasped, pinched or held. And this portable energy storage power radiating effect is good, and when the portable energy storage power of hand contact, can not feel scald or hot.
The portable energy storage power supply of an embodiment of this application includes: the lower shell is provided with a first side positioned in the X-axis direction and a second side positioned in the Y-axis direction, wherein the Y-axis direction and the X-axis direction form a certain angle, and the length of the second side is greater than that of the first side; a first side housing perpendicular to the lower housing and located at a first side of the lower housing in a Y-axis direction; the second side shell is perpendicular to the lower shell and is positioned on the second side of the lower shell in the Y-axis direction; the power conversion unit and the battery unit are sequentially arranged on the lower shell along the X-axis direction, and a channel is formed between the power conversion unit and the battery unit at intervals; the fan is arranged on the first side shell and positioned between the power conversion unit and the battery unit, wherein the second side shell comprises a plurality of through holes, and when the fan works, the plurality of through holes, the channel and the fan form an air channel.
Specifically, please refer to the exploded view of the mobile energy storage power supply device shown in fig. 1, and refer to fig. 2, and fig. 2 is a schematic structural diagram of the mobile energy storage power supply device with the upper housing removed. The portable energy storage power supply of an embodiment of this application includes:
a lower case 100 having a first side 110 positioned in an X-axis direction and a second side 120 positioned in a Y-axis direction, wherein the Y-axis direction forms an angle with the X-axis direction, and the length of the second side 120 is greater than that of the first side 110;
a first side case 200 perpendicular to the lower case 100 and located at a first side of the lower case 100 in the Y-axis direction;
a second side case 300 perpendicular to the lower case 100 and located at a second side of the lower case 100 in the Y-axis direction;
a power conversion unit 400 and a battery unit 500, wherein the power conversion unit 400 and the battery unit 500 are sequentially arranged on the lower case 100 along an X-axis direction, and a channel 600 is formed between the power conversion unit 400 and the battery unit 500;
a fan 700 disposed on the first side case 200 and located between the power conversion unit 400 and the battery unit 500, wherein the second side case 300 includes a plurality of through holes 310, and when the fan 700 operates, the plurality of through holes 310, the channel 600, and the fan 700 form an air channel.
The mobile energy storage power supply is a small energy storage device with a built-in battery and capable of providing stable alternating current and/or direct current voltage output, and therefore the mobile energy storage power supply mainly comprises a battery unit and a power conversion unit. The battery unit is used for storing energy. The power conversion unit generally includes an AC/DC conversion module and a DC/DC conversion module for converting AC power into DC power to charge the battery unit, so as to store energy in the battery unit. The power conversion unit also typically includes a DC/AC conversion module for converting DC power from the battery unit to AC power for powering an AC load; the power conversion unit usually further includes a DC/DC conversion module for converting the DC power from the battery unit into DC power to supply power to the DC load, so as to provide the energy stored in the battery unit to the ac load, so that the mobile energy storage power supply can supply power to both the DC load and the ac load.
Therefore, the battery unit and the power conversion unit are main heating modules in the mobile energy storage power supply, and the heat dissipation condition of the battery unit and the power conversion unit directly influences the reliability and the efficiency of the mobile energy storage power supply. This application through inciting somebody to action power conversion unit 400 with battery unit 500 arranges in proper order along the X axle direction casing 100 is last down, can disperse two big radiating module, easily two big radiating module's natural heat dissipation, and the point or the region of heat concentration can not appear, and can improve the reliability and the efficiency of portable energy storage power.
In addition, the power conversion unit 400 and the battery unit 500 are sequentially arranged on the lower casing 100 along the X-axis direction, so that the height of the mobile energy storage power supply can be reduced, and the mobile energy storage power supply is made into a flat shape, is convenient to grasp, pinch or hold by hand, is particularly suitable for being held by hand, and meets the market demand.
In addition, a channel 600 is formed between the power conversion unit 400 and the battery unit 500, and the fan 700 is disposed on the first side case 200 and between the power conversion unit 400 and the battery unit 500, wherein the second side case 300 includes a plurality of through holes 310, and when the fan 700 is operated, the plurality of through holes 310, the channel 600, and the fan 700 form an air channel. The air duct penetrates through the two heat dissipation modules, the two heat dissipation modules can be simultaneously and effectively dissipated through one fan, and the reliability and the efficiency of the movable energy storage power supply can be improved.
Because the portable energy storage power radiating effect of this application is good, during the portable energy storage power of hand contact, can not feel to scald or heat, provide user experience.
Because the two heat dissipation modules are dispersed, the purpose of heat dissipation can be achieved by adopting a smaller fan, the size of the mobile energy storage power supply can be reduced, and the mobile energy storage power supply is more convenient to carry or hold by hands.
For example, the fan 700 is located between the power conversion unit 400 and the battery unit 500. Specifically, in order to reduce the size of the mobile energy storage power supply, on the premise of meeting the heat dissipation requirement, the fan 700 may be partially overlapped with the power conversion unit 400 or the battery unit 500, or the fan 700 may be partially overlapped with both the power conversion unit 400 and the battery unit 500. So long as the air passage is formed to pass between the power conversion unit 400 and the battery cell 500 when the fan 700 is operated.
In one embodiment, the power conversion unit comprises a PCB and an electronic device disposed on the PCB, the PCB comprises a plurality of fixing holes, the lower housing comprises a plurality of fixing holes, and the fixing member passes through the fixing holes on the PCB and the fixing holes on the lower housing to fix the PCB on the lower housing.
Referring to fig. 1 and 3, fig. 3 is a schematic structural diagram of the mobile energy storage power supply apparatus with the upper housing and the side housing removed. The power conversion unit 400 includes a PCB 410 and an electronic device 420 disposed on the PCB, the PCB 410 includes a plurality of fixing holes 411, the lower casing 100 includes a plurality of fixing holes 101, and a fixing member (not shown) passes through the fixing holes 411 of the PCB 410 and the fixing holes 101 of the lower casing 100 to fix the PCB 410 on the lower casing 100.
The electronic device 420 disposed on the PCB board cooperates with the PCB board 410 to implement the function of the power conversion unit 400 to charge the battery unit or supply power to the load. Generally, the PCB 410 is matched in shape with the lower case 100, and the PCB 410 is disposed such that its length in the Y-axis direction is greater than its length in the X-axis direction, in order to effectively utilize the space on the lower case 100. The number and position of the fixing holes 411 on the PCB 410 can be set according to the requirement of the actual product, and usually three fixing holes are uniformly arranged on the long side of the PCB 410.
In one embodiment, the power conversion unit 400 includes an AC/DC conversion module and a DC/DC conversion module for converting AC power into DC power to charge the battery unit 500.
In one embodiment, the power conversion unit 400 includes a DC/AC conversion module for converting DC power from the battery unit into AC power to power an AC load; the power conversion unit 400 includes a DC/DC conversion module for converting DC power from the battery unit into DC power to power a DC load.
Referring to fig. 2, in an embodiment, a charging port 301, a dc power supply port 302 and an ac power supply port 303 are disposed on the second side housing 300. When the mobile energy storage power supply needs to be charged, an external power supply (e.g., commercial power) can be connected to the charging port to control the power conversion unit 400 to operate, so as to convert the electric energy provided by the power supply into electric energy suitable for charging the battery unit 500, and charge the battery unit 500 when the battery unit is in power shortage. When the energy stored in the battery unit 500 is sufficient and the dc power supply port and/or the ac power supply port is accessed with a load, the power conversion unit 400 is controlled to operate to convert the electric energy stored in the battery unit 500 into electric energy suitable for supplying power to the load.
In order to realize the interaction between the external power supply, the dc load, the ac load and the mobile energy storage power supply, the mobile energy storage power supply further includes a control board 800, the control board 800 is parallel to the second side housing 300 and is located between the second side housing 300 and the power conversion unit 400 and between the second side housing 300 and the battery unit 500, so as to facilitate the interaction between the external power supply, the dc load, and the ac load and the power conversion unit 400 and the battery unit 500 through the control board. That is, the control board 800 is generally used to implement signal transmission and also can be used to implement control of electronic devices on the power conversion unit 400, as shown in fig. 1 and fig. 3.
As described above, the second side case 300 includes a plurality of through holes 310 to form an air passage with the duct 600 and the fan 700. In order to achieve good ventilation effect of the air duct, the through holes 310 are usually arranged in two rows, that is, a first row of through holes 311 and a second row of through holes 312, the first row of through holes 311 and the second row of through holes 312 are both arranged along the X-axis direction and located on two sides of the second side shell 300 in the Z-axis direction, and the distance between the first row of through holes 311 and the second row of through holes 312 is greater than the height of the control board 800, so that the control board 800 does not block the air duct. Wherein the Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction.
In one embodiment, the battery unit includes a fixing frame, the fixing frame includes four frame sidewalls and a partition board, the four frame sidewalls enclose a rectangular parallelepiped accommodating space, and the partition board divides the rectangular parallelepiped accommodating space into a first rectangular parallelepiped accommodating space and a second rectangular parallelepiped accommodating space in a Z-axis direction, where the Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction.
Referring to fig. 1 and 4, fig. 4 is a schematic structural view of a battery holder. The battery unit 500 includes a fixing frame 510, the fixing frame 510 includes four frame sidewalls 511 and a partition plate 512, the four frame sidewalls enclose a rectangular parallelepiped-shaped accommodating space 513, and the partition plate 512 partitions the rectangular parallelepiped-shaped accommodating space 513 in a Z-axis direction, wherein the Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction. A first rectangular parallelepiped accommodation space 5131 and a second rectangular parallelepiped accommodation space 5132
In one embodiment, the lengths of the first and second rectangular parallelepiped receiving spaces 5131 and 5132 extend along the Y-axis direction, the widths of the first and second rectangular parallelepiped receiving spaces 5131 and 5132 extend along the X-axis direction, and the heights of the first and second rectangular parallelepiped receiving spaces 5131 and 5132 extend along the Z-axis direction.
In one embodiment, the battery unit 500 includes a first battery module 520 and a second battery module 520, the first battery module 510 is received in the first rectangular parallelepiped receiving space 5131, and the second battery module (not shown) is received in the second rectangular parallelepiped receiving space 5132.
That is, the first rectangular parallelepiped receiving space 5131 and the second rectangular parallelepiped receiving space 5132 are symmetrically disposed on both sides of the partition plate 512 and have a flat rectangular parallelepiped structure, and the selected first battery module 520 and the selected second battery module 520 are respectively matched in shape with the first rectangular parallelepiped receiving space 5131 and the second rectangular parallelepiped receiving space 5132, so that the battery cell structures shown in fig. 5 can be formed by the first rectangular parallelepiped receiving space 5131 and the second rectangular parallelepiped receiving space 5132, and the entire battery cell structure also has a flat rectangular parallelepiped structure as shown in fig. 5.
In one embodiment, the first battery module 520 and the second battery module 520 are solid state battery modules.
In one embodiment, the spacer 512 is provided with at least one hollow structure 5121, which provides more accommodation space for the battery module when the battery module expands due to heat.
In an embodiment, the first to third frame side walls of the four frame side walls include protruding walls extending into the rectangular parallelepiped receiving space, and when the first battery module is received in the first rectangular parallelepiped receiving space and the second battery module is received in the second rectangular parallelepiped receiving space, the protruding walls fix the first battery module and the second battery module in the first rectangular parallelepiped receiving space and the second rectangular parallelepiped receiving space, respectively.
Referring to fig. 4, first to third frame sidewalls among the four frame sidewalls include a protruding wall 5112 extending into a rectangular parallelepiped-shaped receiving space, when the first battery module 520 is received in the first rectangular parallelepiped-shaped receiving space 5131 and the second battery module is received in the second rectangular parallelepiped-shaped receiving space 5132, the protruding wall 5112 fixes the first battery module 520 and the second battery module in the first rectangular parallelepiped-shaped receiving space 5131 and the second rectangular parallelepiped-shaped receiving space 5132, respectively, so as to prevent the first battery module 520 and the second battery module from moving.
In one embodiment, the fixing frame has a plurality of fixing holes, the lower housing has a plurality of fixing holes, and the fixing member passes through the fixing holes of the fixing frame and the fixing holes of the lower housing to fix the fixing frame on the lower housing.
As shown in fig. 1, 2 and 4, the fixing frame 510 has a plurality of fixing holes 514, the lower casing 100 has a plurality of fixing holes 110, and a fixing member (not shown) passes through the fixing holes 514 of the fixing frame 510 and the fixing holes 101 of the lower casing 100 to fix the fixing frame 510 to the lower casing 100.
As shown in fig. 1, 2 and 3, the battery cell 500 is also placed such that its length in the Y-axis direction is greater than its length in the X-axis direction, to effectively utilize the space on the lower case 100.
In an embodiment, the mobile energy storage power supply further includes an upper housing 900, the upper housing 900 is fixedly connected to the lower housing 100, the first side housing 200 and the second side housing 300 to form a receiving cavity, and the power conversion unit 400, the battery unit 500 and the control board 800 are located in the receiving cavity.
In one embodiment, the upper housing 900 is snap-fit to the lower housing 100.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A mobile energy storage power supply, comprising:
the lower shell is provided with a first side positioned in the X-axis direction and a second side positioned in the Y-axis direction, wherein the Y-axis direction and the X-axis direction form a certain angle, and the length of the second side is greater than that of the first side;
the first side shell is vertical to the lower shell and is positioned on the first side of the lower shell in the Y-axis direction;
the second side shell is perpendicular to the lower shell and is positioned on the second side of the lower shell in the Y-axis direction;
the power conversion unit and the battery unit are sequentially arranged on the lower shell along the X-axis direction, and a channel is formed between the power conversion unit and the battery unit at intervals;
the fan is arranged on the first side shell and positioned between the power conversion unit and the battery unit, wherein the second side shell comprises a plurality of through holes, and when the fan works, the plurality of through holes, the channel and the fan form an air channel.
2. The mobile energy storage power supply of claim 1, wherein the power conversion unit comprises a PCB and an electronic device disposed on the PCB, the PCB comprises a plurality of fixing holes, the lower housing comprises a plurality of fixing holes, and a fixing member passes through the fixing holes on the PCB and the fixing holes on the lower housing to fix the PCB to the lower housing.
3. The mobile energy storage power supply of claim 1 or 2, wherein the power conversion unit comprises an AC/DC conversion module and a DC/DC conversion module for converting AC power to DC power to charge the battery unit.
4. The mobile energy storage power supply of claim 3, wherein the power conversion unit comprises a DC/AC conversion module for converting DC power from the battery unit into AC power for powering an AC load; the power conversion unit comprises a DC/DC conversion module used for converting the direct current from the battery unit into direct current to supply power for a direct current load.
5. The mobile energy storage power supply according to claim 1, wherein the battery unit comprises a fixing frame, the fixing frame comprises four frame side walls and a partition plate, the four frame side walls enclose a rectangular parallelepiped accommodating space, and the partition plate divides the rectangular parallelepiped accommodating space into a first rectangular parallelepiped accommodating space and a second rectangular parallelepiped accommodating space in a Z-axis direction, wherein the Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction.
6. The mobile energy storage power supply of claim 5, wherein the lengths of the first and second rectangular parallelepiped shaped receiving spaces extend along a Y axis direction, the widths of the first and second rectangular parallelepiped shaped receiving spaces extend along an X axis direction, and the heights of the first and second rectangular parallelepiped shaped receiving spaces extend along a Z axis direction.
7. The mobile energy storage power supply of claim 6, wherein the battery unit comprises a first battery module and a second battery module, the first battery module being received in the first cuboid-shaped receiving space, the second battery module being received in the second cuboid-shaped receiving space.
8. The mobile energy storage power supply of claim 7, wherein first through third of the four frame sidewalls comprise a protruding wall extending into a rectangular parallelepiped receiving space, the protruding wall fixing the first battery module and the second battery module in the first rectangular parallelepiped receiving space and the second rectangular parallelepiped receiving space, respectively, when the first battery module is received in the first rectangular parallelepiped receiving space and the second battery module is received in the second rectangular parallelepiped receiving space.
9. The mobile energy storage power supply of claim 8, wherein the mounting bracket comprises a plurality of mounting holes, and the lower housing comprises a plurality of mounting holes, and wherein a fastener is inserted through the mounting holes of the mounting bracket and the mounting holes of the lower housing to secure the mounting bracket to the lower housing.
10. The mobile energy storage power supply of claim 1, further comprising a control board disposed parallel to the second side housing and between the second side housing and the power conversion unit and the battery unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223046767.7U CN218733378U (en) | 2022-11-16 | 2022-11-16 | Movable energy storage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223046767.7U CN218733378U (en) | 2022-11-16 | 2022-11-16 | Movable energy storage power supply |
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| Publication Number | Publication Date |
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| CN218733378U true CN218733378U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223046767.7U Active CN218733378U (en) | 2022-11-16 | 2022-11-16 | Movable energy storage power supply |
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| CN (1) | CN218733378U (en) |
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- 2022-11-16 CN CN202223046767.7U patent/CN218733378U/en active Active
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