CN203774832U - Low-voltage power supply device for all-electric excavator - Google Patents

Low-voltage power supply device for all-electric excavator Download PDF

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Publication number
CN203774832U
CN203774832U CN201420126012.4U CN201420126012U CN203774832U CN 203774832 U CN203774832 U CN 203774832U CN 201420126012 U CN201420126012 U CN 201420126012U CN 203774832 U CN203774832 U CN 203774832U
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CN
China
Prior art keywords
voltage
module
power supply
low
storage battery
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420126012.4U
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Chinese (zh)
Inventor
徐孟
林平
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Foochow Modern Heavy-Duty Machinery Co Ltd
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Foochow Modern Heavy-Duty Machinery Co Ltd
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Priority to CN201420126012.4U priority Critical patent/CN203774832U/en
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Publication of CN203774832U publication Critical patent/CN203774832U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a low-voltage power supply device for an all-electric excavator. The all-electric excavator is configured with a storage battery in hundreds of volts to provide electric energy, but a plurality of small electrical devices on the excavator need a 24V DC power supply or a 12V DC power supply. The low-voltage power supply device for the all-electric excavator comprises a storage battery, a DC-DC voltage module, and a lead-acid battery. Positive and negative poles of the output end of the storage battery are respectively connected with positive and negative poles of the input end of the DC-DC voltage module. Positive and negative poles of the output end of the DC-DC voltage module are respectively connected with positive and negative poles of the input end of the lead-acid battery. A voltage detection module and a control module are disposed between the DC-DC voltage module and the lead-acid battery. The device is simple in structure and low in cost, and is advantaged by stable operation, low power, long life, etc. The low-voltage power supply device for the all-electric excavator does not need external charging, and the device is widely suitable for power supply of low-voltage devices on a machine with a large-scale high-voltage storage battery.

Description

A kind of pure electric excavator low-voltage power supply equipment
Technical field
The utility model relates to a kind of pure electric excavator low-voltage power supply equipment.
Background technology
Along with expanding economy, the progress of society, energy conservation and environmental protection have become inevitable and social consensus.Various energy-saving equipments, clean energy resource equipment, new forms of energy equipment arise at the historic moment.A kind of pure electric excavator low-voltage power supply equipment of pure electric excavator also has new development.
Pure electric excavator is usingd high power motor as power source, the storage battery of configuration hundreds of volt provides electric energy, but the many little power consumption equipment on excavator needs the DC power supply of DC24V or DC12V as equipment such as illuminating lamp, driver's cabin windscreen wiper, radiator fan, heat radiation water pumps, more than the about 1000W of estimation gross power.General way is to use a powerful DC-DC power module, and the hundreds of volt high pressure of storage battery is converted to low voltage DC 24V.Use cost and the maintenance cost of powerful DC-DC power module are higher, and when all low voltage equipments are worked simultaneously, electric current by DC-DC power module is large, heating is many, affects the useful life of DC-DC power module and the use safety of power consumption equipment.Another kind of way is to use lead-acid battery as low-tension supply, and lead-acid battery can be realized long-time heavy-current discharge and cheap, but after long-time use, battery electric quantity reduces, and needs external charge, affects the operating efficiency of excavator.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned defect that how to overcome prior art, and a kind of pure electric excavator low-voltage power supply equipment is provided.
For solving the problems of the technologies described above, this pure electric excavator low-voltage power supply equipment comprises storage battery, DC-DC voltage module and lead acid accumulator, wherein accumulator output end both positive and negative polarity is connected respectively with DC-DC power module input both positive and negative polarity, DC-DC voltage module output positive and negative charge is connected respectively with lead acid accumulator input both positive and negative polarity, between described DC-DC power module and lead acid accumulator, is provided with voltage detection module and control module.
As optimization, described storage battery is airborne high tension battery group.
As optimization, described DC-DC voltage module output voltage is DC24V, and the rated voltage of described lead acid accumulator is DC24V.
As optimization, described DC-DC voltage module output voltage is DC12V, and the rated voltage of described lead acid accumulator is DC12V.
As optimization, on described storage battery, connect at least two DC-DC voltage modules, described DC-DC voltage module comprises that at least one output voltage is that DC24V and at least one output voltage are DC12V, on each DC-DC voltage module, be all connected with lead acid accumulator, DC-DC voltage module output voltage comprises that the rated voltage of DC24V and coupled lead acid accumulator matches.
So design, lead-acid battery output positive and negative charge connects low voltage equipment, and provides working power for low voltage equipment.Voltage detection module on DC-DC power module and control module detect the voltage of lead-acid battery automatically, when lead-acid battery voltage is during lower than set point, DC-DC power module converts low tension to high-tension electricity and is charged in lead acid accumulator, when lead-acid battery voltage reaches set point, DC-DC power module stops charging to lead-acid battery.
A kind of pure electric excavator low-voltage power supply equipment of the utility model is simple in structure, with low cost, and it has the advantages such as working stability, power is little, the life-span is long, does not need again the pure electric excavator low-voltage power supply equipment of the pure electric excavator of external charge simultaneously.Be widely used in as being loaded with the low-voltage equipment power supply mechanically of Large-scale High-Pressure storage battery.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, a kind of pure electric excavator low-voltage power supply equipment of the utility model is described further:
Fig. 1 is the structural representation of the execution mode 1,2 of this pure electric excavator low-voltage power supply equipment;
Fig. 2 is the structural representation of the execution mode 3 of this pure electric excavator low-voltage power supply equipment.
In figure: 1-storage battery, 2-DC-DC voltage module, 3-lead acid accumulator.
Embodiment
Execution mode 1: as shown in Figure 1, this pure electric excavator low-voltage power supply equipment comprises storage battery (1), DC-DC voltage module (2) and lead acid accumulator (3), wherein storage battery (1) output positive and negative charge is connected respectively with DC-DC power module (2) input both positive and negative polarity, DC-DC voltage module (2) output positive and negative charge is connected respectively with lead acid accumulator (3) input both positive and negative polarity, between described DC-DC power module (2) and lead acid accumulator (3), is provided with voltage detection module and control module.Described storage battery (1) is airborne high tension battery group.Described DC-DC voltage module (2) output voltage is DC24V, and the rated voltage of described lead acid accumulator (3) is DC24V.
Execution mode 2: as shown in Figure 1, this pure electric excavator low-voltage power supply equipment, comprise storage battery (1), DC-DC voltage module (2) and lead acid accumulator (3), wherein storage battery (1) output positive and negative charge is connected respectively with DC-DC power module (2) input both positive and negative polarity, DC-DC voltage module (2) output positive and negative charge is connected respectively with lead acid accumulator (3) input both positive and negative polarity, between described DC-DC power module (2) and lead acid accumulator (3), is provided with voltage detection module and control module.Described storage battery (1) is airborne high tension battery group.Described DC-DC voltage module (2) output voltage is DC12V, and the rated voltage of described lead acid accumulator (3) is DC12V.
Execution mode 3: as shown in Figure 2, this pure electric excavator low-voltage power supply equipment comprises storage battery (1), DC-DC voltage module (2) and lead acid accumulator (3), wherein storage battery (1) output positive and negative charge is connected respectively with DC-DC power module (2) input both positive and negative polarity, DC-DC voltage module (2) output positive and negative charge is connected respectively with lead acid accumulator (3) input both positive and negative polarity, between described DC-DC power module (2) and lead acid accumulator (3), is provided with voltage detection module and control module.Described storage battery (1) is airborne high tension battery group.Upper at least two the DC-DC voltage modules (2) that connect of described storage battery (1), described DC-DC voltage module (2) comprises that at least one output voltage is that DC24V and at least one output voltage are DC12V, on each DC-DC voltage module (2), be all connected with lead acid accumulator (3), DC-DC voltage module (2) output voltage comprises that the rated voltage of DC24V and coupled lead acid accumulator (3) matches.
Above-mentioned execution mode is intended to illustrate the utility model and can be professional and technical personnel in the field's realization or use; it will be apparent for those skilled in the art that above-mentioned execution mode is modified; therefore the utility model includes but not limited to above-mentioned execution mode; any these claims or specification of meeting described; meet the product with principle disclosed herein and novelty, inventive features, within all falling into protection range of the present utility model.

Claims (5)

1. a pure electric excavator low-voltage power supply equipment, it is characterized in that: comprise storage battery (1), DC-DC voltage module (2) and lead acid accumulator (3), wherein storage battery (1) output positive and negative charge is connected respectively with DC-DC power module (2) input both positive and negative polarity, DC-DC voltage module (2) output positive and negative charge is connected respectively with lead acid accumulator (3) input both positive and negative polarity, between described DC-DC power module (2) and lead acid accumulator (3), is provided with voltage detection module and control module.
2. pure electric excavator low-voltage power supply equipment according to claim 1, is characterized in that: described storage battery (1) is airborne high tension battery group.
3. pure electric excavator low-voltage power supply equipment according to claim 2, is characterized in that: described DC-DC voltage module (2) output voltage is DC24V, and the rated voltage of described lead acid accumulator (3) is DC24V.
4. pure electric excavator low-voltage power supply equipment according to claim 2, is characterized in that: described DC-DC voltage module (2) output voltage is DC12V, and the rated voltage of described lead acid accumulator (3) is DC12V.
5. pure electric excavator low-voltage power supply equipment according to claim 2, it is characterized in that: upper at least two the DC-DC voltage modules (2) that connect of described storage battery (1), described DC-DC voltage module (2) comprises that at least one output voltage is that DC24V and at least one output voltage are DC12V, on each DC-DC voltage module (2), be all connected with lead acid accumulator (3), DC-DC voltage module (2) output voltage comprises that the rated voltage of DC24V and coupled lead acid accumulator (3) matches.
CN201420126012.4U 2014-03-20 2014-03-20 Low-voltage power supply device for all-electric excavator Expired - Fee Related CN203774832U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420126012.4U CN203774832U (en) 2014-03-20 2014-03-20 Low-voltage power supply device for all-electric excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420126012.4U CN203774832U (en) 2014-03-20 2014-03-20 Low-voltage power supply device for all-electric excavator

Publications (1)

Publication Number Publication Date
CN203774832U true CN203774832U (en) 2014-08-13

Family

ID=51291982

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420126012.4U Expired - Fee Related CN203774832U (en) 2014-03-20 2014-03-20 Low-voltage power supply device for all-electric excavator

Country Status (1)

Country Link
CN (1) CN203774832U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140813

Termination date: 20160320

CF01 Termination of patent right due to non-payment of annual fee