CN212605753U - Container energy storage variable frequency air conditioning unit for direct current supply ship - Google Patents
Container energy storage variable frequency air conditioning unit for direct current supply ship Download PDFInfo
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- CN212605753U CN212605753U CN202021639190.9U CN202021639190U CN212605753U CN 212605753 U CN212605753 U CN 212605753U CN 202021639190 U CN202021639190 U CN 202021639190U CN 212605753 U CN212605753 U CN 212605753U
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Abstract
The utility model discloses a marine container energy storage variable frequency air conditioning unit of DC power supply, including DC power supply access port and compressor module, DC power supply access port is connected with the compressor module electricity, the compressor module includes the compressor and passes through the AC device with the direct current that the compressor electricity is connected, the direct current changes AC device and is used for changing the direct current into the alternating current and carries to the compressor. The utility model discloses a set up the direct current power supply access port and insert direct current power supply for air conditioning unit to set up the direct current to exchange the device, change the direct current into the alternating current and carry to the compressor, effectively reduced the emission of pollutant, and the noise is little; the alternating current of direct current-to-alternating current device output only supplies the compressor, and consequently, the demand of alternating current is few, and the corresponding direct current-to-alternating current device is small, and direct current-to-alternating current device can be integrated to be set up in air conditioning unit, need not independent setting, does not occupy the container space, has effectively increased the space utilization of container.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment, specifically speaking relates to a marine container energy storage variable frequency air conditioning unit of DC supply.
Background
Shipping along the coast and inland river basin in China has important influence on the economy of China. With the development of shipping, the container energy storage and power supply ship becomes a main ship type for shipping along the sea and inland river.
In particular, a lithium battery is generally disposed inside the container as an energy storage device for storing energy. However, the energy storage device is easy to generate heat during charging and discharging, and therefore, a corresponding air conditioner needs to be configured in the container to cool the energy storage device and maintain the stability of the operating environment temperature of the energy storage device.
At present, the air conditioner in the container is mainly powered by the following two ways:
firstly, a diesel generator is adopted to output alternating current to supply an air conditioner for use. A large amount of diesel oil is combusted in the running process of the diesel generator, so that a large amount of waste gas can be generated, and air pollution and water area pollution are caused; in addition, the diesel generator has high noise in the operation process, and is easy to cause noise pollution. Namely, the power supply mode not only has no function of energy conservation and emission reduction, but also has higher investment cost, and the equipment using alternating current on the ship only has air conditioning equipment, thus easily causing resource waste.
And secondly, inverting the direct current power supply of the energy storage battery into alternating current by adopting an external inverter for container energy storage, so as to be used by an air conditioner. The power supply of each component (fan, condenser, compressor, etc.) in the air conditioner is derived from the alternating current after inversion by the inverter, so that the air conditioner needs a large amount of alternating current electric quantity. In order to meet the ac power consumption of the air conditioner, an inverter needs to be configured to have a large volume so as to invert a large amount of dc power into ac power.
Because the inverter is large in size, the inverter cannot be integrally arranged in the air conditioner to realize integrated design with the air conditioner. Therefore, the inverter needs to be separately arranged in the container, which occupies a larger space of the container and reduces the space utilization rate of the container.
In summary, the existing scheme is mainly that alternating current output by a diesel generator supplies power to an air conditioner; or, the direct current of the storage battery is inverted into alternating current for the air conditioner through the external inverter. The two schemes can not achieve the purposes of energy conservation and emission reduction, container space saving and container construction investment cost reduction at the same time. The development of pure green electric ships is severely hindered.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a utility model aim at overcome current container air conditioning unit can not reach energy saving and emission reduction simultaneously, practices thrift the problem in container space, provides a marine container energy storage variable frequency air conditioning unit of DC supply for container energy storage variable frequency air conditioning unit energy consumption is low, and the emission is few, and is small, and it is little to occupy the container space, and investment cost is low.
In order to solve the technical problem, the utility model adopts the following basic concept: the utility model provides a marine container energy storage variable frequency air conditioning unit of DC power supply, includes DC power access port and compressor module, DC power access port is connected with the compressor module electricity, the compressor module includes the compressor and passes through the AC device with the direct current that the compressor electricity is connected, the direct current is passed through the AC device and is used for changing the direct current into the alternating current and carry to the compressor.
Further, the dc-ac device is a frequency converter, the dc power supply access port is electrically connected to the frequency converter, the frequency converter is electrically connected to the compressor, and dc power input from the dc power supply access port is converted into ac power with adjustable frequency by the frequency converter and transmitted to the compressor.
Further, the compressor module comprises a filter, the filter is electrically connected with the direct current power supply access port and the frequency converter respectively, and direct current is input from the direct current power supply access port and is transmitted to the frequency converter through filtering of the filter.
Further, the compressor module comprises a pre-charging device, the pre-charging device is arranged between the filter and the frequency converter and is respectively electrically connected with the filter and the frequency converter, and the direct current output by the filter is output to the frequency converter through the pre-charging device.
Further, the fan module comprises a fan module, wherein the fan module comprises a fan, a condensing fan and a first direct current voltage reduction device, the first direct current voltage reduction device is provided with a voltage input end and a voltage output end, the direct current power supply access port is electrically connected with the voltage input end, the voltage output end is electrically connected with the fan and the condensing fan respectively, and high-voltage direct current output by the direct current power supply access port is converted into low-voltage direct current through the first direct current voltage reduction device and is transmitted to the fan and the condensing fan.
Further, including control module, control module includes second DC step-down device and the control panel of being connected with compressor module, fan module electricity, the control panel is used for controlling compressor module and fan module, second DC step-down device includes voltage input end and voltage output end, DC power access port with voltage input end electricity is connected, voltage output end is connected with the control panel electricity, and the high-voltage direct current of being exported by DC power access port converts the low-voltage direct current to the control panel through second DC step-down device and carries.
Furthermore, the control panel is provided with a communication interface for receiving communication signals, and the control panel controls the compressor module and the fan module according to the received communication signals.
Furthermore, the air conditioner comprises an electric control box with a hollow cavity inside, and the compressor module, the fan module and the control module are integrally arranged in the electric control box.
Further, including inside container and the air conditioner box that has well cavity, the peripheral lateral wall of air conditioner box has mounting flange, the air conditioner box inlay to establish the box lateral wall of container on and fixed through mounting flange and container.
Furthermore, a partition board is arranged in the air conditioner box body, the hollow cavity is divided into a first cavity and a second cavity by the partition board, the first cavity is located inside the container body, the second cavity is located outside the container body, and the electric control box is arranged in the second cavity.
After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has.
1. The direct current power supply access port is arranged for accessing a direct current power supply to the air conditioning unit, and the direct current-to-alternating current device is arranged for converting direct current into alternating current and transmitting the alternating current to the compressor, so that the emission of pollutants is effectively reduced, and the noise is low; the alternating current of direct current-to-alternating current device output only supplies the compressor, and consequently, the demand of alternating current is few, and the corresponding direct current-to-alternating current device is small, and direct current-to-alternating current device can be integrated and set up in air conditioning unit, need not independent setting, does not occupy the container space, has increased the space utilization of container.
2. The frequency converter is arranged to convert direct current into alternating current to be transmitted to the compressor, so that normal operation of the compressor is guaranteed, meanwhile, the frequency converter can widen the power supply voltage range, frequency conversion control of the air conditioning unit compressor is achieved, the purpose of energy conservation under different operation environments is achieved, and more electric energy is guaranteed to provide power for the ship.
3. The high-frequency pulse of the external power grid is filtered by the filter to interfere the circuit, so that the operation stability of the air conditioning unit is ensured, and the electromagnetic interference of the pulse generated during switching of the power supply to the outside can be reduced.
4. The pre-charging device is arranged for current-limiting pre-charging, so that the input impact current at the moment of power-on is reduced, and the working reliability of the frequency converter is ensured.
5. The fan module is provided with low-voltage direct current electricity through the first direct current voltage reduction device, so that the ventilator and the condensation fan can normally operate, a client can regulate and control the air quantity according to requirements, the requirement on uniformity of an air field inside the container is met, meanwhile, the output voltage is low, the power utilization safety of the air conditioner assembly is guaranteed, and the power consumption of the fan module is saved.
6. The second direct current voltage reduction device is arranged to provide low-voltage direct current for the control module, so that normal work of the control panel can be guaranteed, and direct current can be saved.
7. Through setting up the communication interface who is used for receiving communication signal, realize remote control and data transmission, further realize unmanned on duty, reduce energy storage container operation and follow-up maintenance cost.
8. Through with compressor module, fan module and the integrated setting of control module in automatically controlled box, rationally distributed, occupy the space in the air conditioner as few as possible, effectively reduced the volume of air conditioner.
9. Divide into first cavity and second cavity with well cavity through the baffle, first cavity is located the box of container inside, and the second cavity is located the box outside of container, and automatically controlled box sets up in the second cavity, conveniently uncap in the box outside of container and maintain air conditioning unit.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is an isometric view of an air conditioning unit of the present invention;
fig. 2 is a cross-sectional view of the air conditioning unit of the present invention;
fig. 3 is a further cross-sectional view of the air conditioning unit of the present invention;
fig. 4 is a schematic circuit diagram of a compressor module according to the present invention;
fig. 5 is a schematic diagram of the fan module circuit connection of the present invention;
fig. 6 is a schematic diagram of the circuit connection of the control module of the present invention.
In the figure: 1. a DC power access port; 2. a compressor; 3. a frequency converter; 4. a filter; 5. a pre-charging device; 6. a ventilator; 7. a condensing fan; 8. a first DC step-down device; 9. a control panel; 10. a second DC voltage reduction device; 11. a communication interface; 12. an air conditioning cabinet; 13. a control screen; 14. a condenser; 15. a control component; 16. and (5) fixing the flange.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses a marine container energy storage variable frequency air conditioning unit of DC supply can directly provide direct current power electricity, generally for DC640V to the air conditioner through the battery.
As shown in fig. 1 to 6, the system comprises a dc power access port 1 and a compressor module. And the direct current power supply access port 1 is electrically connected with the compressor module. The compressor module comprises a compressor 2 and a direct current to alternating current device electrically connected with the compressor 2, wherein the direct current to alternating current device is used for converting direct current into alternating current and transmitting the alternating current to the compressor.
The utility model discloses a set up DC power supply access port 1 and insert DC power supply for air conditioning unit to set up the direct current and change the direct current into the alternating current and carry to compressor 2, effectively reduced the emission of pollutant, and the noise is little.
The alternating current of direct current-to-alternating current device output only supplies the compressor, and consequently, the demand of alternating current is few, and the corresponding direct current-to-alternating current device is small, and direct current-to-alternating current device can be integrated and set up in air conditioning unit, need not independent setting, does not occupy the container space, has increased the space utilization of container.
The direct current power supply can be provided by a storage battery, the storage battery can be charged in a power consumption low peak period and discharged in a power consumption high peak period, electric energy is reasonably utilized, the air conditioning unit can be maintained to be used in an undervoltage state, and the direct current power supply has the characteristics of low energy consumption, less emission, low noise and low cost.
As an embodiment of the present invention, the dc-to-ac converter is a frequency converter 3. The frequency converter 3 mainly comprises a filtering unit, an inversion unit (converting direct current into alternating current), a braking unit, a driving unit, a detection unit, a micro-processing unit and the like. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off the internal IGBT, and provides required power supply voltage according to actual needs, so that the aims of energy conservation and speed regulation are fulfilled.
The direct current power supply access port 1 is electrically connected with the frequency converter 3 and is used for transmitting direct current to the frequency converter 3; the frequency converter 3 is electrically connected with the compressor 2, and direct current input by the direct current power supply access port 1 is converted into alternating current with adjustable frequency through the frequency converter 3 and is transmitted to the compressor 2.
In the embodiment, the inverter 3 is arranged to broaden the direct-current voltage with the supply voltage of DC640V to DC500V-DC720V, and convert the direct-current power into the alternating-current power, thereby ensuring the normal operation of the compressor 2. Meanwhile, the frequency converter 3 can realize the frequency conversion control of the air conditioning unit compressor 2, so that the purpose of energy conservation under different operating environments is achieved, and more electric energy is ensured to provide power for the ship.
As another embodiment of the present invention, the compressor module further includes a filter 4. In particular, the filter 4 is an EMI filter. The filter 4 is respectively electrically connected with the DC power access port 1 and the frequency converter 3, and the DC power is input from the DC power access port 1 and is filtered and transmitted to the frequency converter 3 through the filter 4.
The utility model discloses a set up the external electric wire netting of filter 4 filtering's high frequency pulse to the interference of circuit, guarantee air conditioning unit's operating stability. Meanwhile, the electromagnetic interference of the pulse generated when the power supply is switched on and off can be reduced through filtering of the filter 4, and the stability of a ship system is ensured.
As another embodiment of the present invention, the compressor module further includes a pre-charging device 5. The pre-charging device 5 is arranged between the filter 4 and the frequency converter 3 and is electrically connected with the filter 4 and the frequency converter 3 respectively. The direct current output by the filter 4 is output to the frequency converter 3 through the pre-charging device 5, and the current-limiting pre-charging is carried out on the filter capacitor.
In the embodiment, the pre-charging device 5 is arranged to perform current-limiting pre-charging on the filter capacitor, so that the instantaneous input impact current when the power supply is switched on is reduced, and the working reliability of the frequency converter 3 is ensured.
The utility model provides a marine container energy storage variable frequency air conditioning unit of DC supply still includes the fan module. As shown in fig. 1 to 3 and 5, the fan module includes a ventilator 6, a condensing fan 7, and a first dc pressure reduction device 8. Specifically, the fan 6 adopts a DC48V back-rake centrifugal fan, and has the characteristics of large air volume and large static pressure.
The first dc step-down means 8 has a voltage input and a voltage output. The direct current power supply access port 1 is electrically connected with a voltage input end of a first direct current voltage reduction device 8, and a voltage output end of the first direct current voltage reduction device 8 is electrically connected with a ventilator 6 and a condensing fan 7 respectively. The high-voltage direct current output by the direct current power access port 1 is converted into low-voltage direct current by the first direct current voltage reduction device 8 and is transmitted to the ventilator 6 and the condensing fan 7, so that the ventilator 6 and the condensing fan 7 are in production operation.
Specifically, the DC power access port 1 outputs DC power of DC640V, the DC power of DC640V is converted into DC power of DC48V by the first DC voltage reduction device 8, and the DC power of DC48V is transmitted to the ventilator 6 and the condensing fan 7.
This embodiment provides low voltage direct current for the fan module through setting up first direct current voltage reduction device 8 for ventilation blower 6 and condensation fan 7 normal operating, the customer can be regulated and control the amount of wind as required, in order to satisfy the inside wind field homogeneity requirement of container. Meanwhile, the output voltage is lower, so that the power utilization safety of the air conditioner assembly is guaranteed, and the power consumption of the fan module is saved.
As an embodiment of the utility model discloses an embodiment, the marine container energy storage variable frequency air conditioning unit of DC supply still includes control module. As shown in fig. 1 to 3 and 6, the control module includes a second dc voltage dropping device 10 and a control board 9 electrically connected to the compressor module and the fan module, and the control board 9 is used for controlling the operation of the control assembly 15. The control assembly 15 includes a compressor module, a fan module, a condenser 14, an evaporator, a four-way valve, a throttle device, and the like. The control panel 9 controls the control assembly 15 to realize the functions of heating, refrigerating, dehumidifying, ventilating and frequency conversion regulation of the air conditioner.
Further, the air-conditioning case 12 is provided with a control panel 13, and the control panel 13 is electrically connected/communicatively connected with the control panel 9 inside the air-conditioning case 12. An operator can control the air conditioner through the control screen 13 to realize the functions of heating, refrigerating, dehumidifying, ventilating and frequency conversion adjusting of the air conditioner.
In this embodiment, the second dc voltage dropping device 10 includes a voltage input terminal and a voltage output terminal. The direct current power supply access port 1 is electrically connected with a voltage input end of a second direct current step-down device 10; the voltage output end of the second dc voltage dropping device 10 is electrically connected to the control board 9. The high-voltage direct current output by the direct current power access port 1 is converted into low-voltage direct current by the second direct current voltage reduction device 10 and is transmitted to the control panel 9.
Specifically, the DC power access port 1 outputs DC power of DC640V, and DC power of DC640V is converted into DC power of DC24V by the second DC voltage dropping device 10, and the DC power of DC24V is transmitted to the control board 9.
In this embodiment, the second DC voltage dropping device 10 is arranged to provide low-voltage DC power for the control module, and the DC24V is safe voltage, so that the safety of the air conditioning unit in the control process is ensured, and the DC power is saved while the control panel 9 works normally.
As another embodiment of the present invention, the control board 9 has a communication interface 11 for receiving communication signals. Specifically, the communication interface 11 is an RS485 communication interface. And the control panel 9 controls the operation of the compressor module and the fan module according to the communication signals received by the communication interface 11.
In this embodiment, through setting up communication interface 11 that is used for receiving communication signal, realize remote control and data transmission, further realize unmanned on duty, reduce energy storage container operation and follow-up maintenance cost.
As another embodiment of the utility model, the marine container energy storage variable frequency air conditioning unit of DC supply includes that inside has the automatically controlled box of well plenum chamber, compressor module, fan module and the integrated setting of control module are in the automatically controlled box. Through with compressor module, fan module and the integrated setting of control module in automatically controlled box, rationally distributed, occupy the space in the air conditioner as few as possible, effectively reduced the volume of air conditioner.
The utility model discloses a marine container energy storage variable frequency air conditioning unit of DC supply provides the direct current through the battery.
The container energy storage variable frequency air conditioning unit for the direct current supply ship comprises a container and an air conditioning box body 12, wherein a hollow cavity is formed in the container, and a fixing flange 16 is arranged on the peripheral side wall of the air conditioning box body 12. The air-conditioning box body 12 is embedded on the side wall of the container body and fixed with the container through a fixing flange 16.
The air conditioner is characterized in that a partition plate is arranged in the air conditioner box body 12, the partition plate divides the hollow cavity into a first cavity and a second cavity, the first cavity is located inside the box body of the container, the second cavity is located outside the box body of the container, and the electric control box is arranged in the second cavity. The utility model discloses the convenience is uncapped and is maintained air conditioning unit in the box outside of container.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.
Claims (10)
1. The utility model provides a marine container energy storage variable frequency air conditioning unit of DC supply which characterized in that: including DC power access port and compressor module, DC power access port is connected with the compressor module electricity, the compressor module includes the compressor and changes the galvanic circle to the alternating current device with the electric direct current that the compressor is connected, the direct current changes the alternating current device and is used for changing the direct current into the alternating current and carry to the compressor.
2. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 1, characterized in that: the direct current-to-alternating current device is a frequency converter, the direct current power supply access port is electrically connected with the frequency converter, the frequency converter is electrically connected with the compressor, and direct current input by the direct current power supply access port is converted into alternating current with adjustable frequency through the frequency converter and is transmitted to the compressor.
3. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 2, characterized in that: the compressor module comprises a filter, the filter is respectively electrically connected with the direct current power supply access port and the frequency converter, and direct current is input from the direct current power supply access port and is transmitted to the frequency converter after being filtered by the filter.
4. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 3, characterized in that: the compressor module comprises a pre-charging device, the pre-charging device is arranged between the filter and the frequency converter and is respectively electrically connected with the filter and the frequency converter, and the direct current output by the filter is output to the frequency converter through the pre-charging device.
5. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 1, characterized in that: the fan module comprises a fan module, the fan module comprises a ventilator, a condensation fan and a first direct current voltage reduction device, the first direct current voltage reduction device is provided with a voltage input end and a voltage output end, a direct current power supply access port is electrically connected with the voltage input end, the voltage output end is electrically connected with the ventilator and the condensation fan respectively, and high-voltage direct current output by the direct current power supply access port is converted into low-voltage direct current through the first direct current voltage reduction device and is conveyed to the ventilator and the condensation fan.
6. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 1, characterized in that: including control module, control module includes second direct current reducing voltage device and the control panel of being connected with compressor module, fan module electricity, the control panel is used for controlling compressor module and fan module, second direct current reducing voltage device includes voltage input end and voltage output end, direct current power access port with voltage input end electricity is connected, voltage output end is connected with the control panel electricity, and the high-voltage direct current of being exported by direct current power access port converts the low-voltage direct current to the control panel through second direct current reducing voltage device and carries.
7. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 6, characterized in that: the control panel is provided with a communication interface for receiving communication signals, and the control panel controls the compressor module and the fan module according to the received communication signals.
8. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 1, characterized in that: the air conditioner comprises an electric control box with a hollow cavity inside, wherein a compressor module, a fan module and a control module are integrally arranged in the electric control box.
9. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 8, characterized in that: including inside container and the air conditioner box that has well cavity, the mounting flange has on the periphery lateral wall of air conditioner box, the air conditioner box inlays to be established the box lateral wall of container on and fixed through mounting flange and container.
10. The direct-current-supply marine container energy storage variable-frequency air conditioning unit according to claim 9, characterized in that: the air-conditioning box is internally provided with a partition board, the partition board divides the hollow cavity into a first cavity and a second cavity, the first cavity is located inside the box body of the container, the second cavity is located outside the box body of the container, and the electric control box is arranged in the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021639190.9U CN212605753U (en) | 2020-08-07 | 2020-08-07 | Container energy storage variable frequency air conditioning unit for direct current supply ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021639190.9U CN212605753U (en) | 2020-08-07 | 2020-08-07 | Container energy storage variable frequency air conditioning unit for direct current supply ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212605753U true CN212605753U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021639190.9U Active CN212605753U (en) | 2020-08-07 | 2020-08-07 | Container energy storage variable frequency air conditioning unit for direct current supply ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212605753U (en) |
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2020
- 2020-08-07 CN CN202021639190.9U patent/CN212605753U/en active Active
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| GR01 | Patent grant | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Zhu Honglei Inventor after: Zhang Yongli Inventor after: Dong Hongjian Inventor before: Zhu Honglei Inventor before: Zhang Yongli Inventor before: Dong Hongjian |