CN208923899U - One kind changing electric cabinet energy storage backup power supply system - Google Patents
One kind changing electric cabinet energy storage backup power supply system Download PDFInfo
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- CN208923899U CN208923899U CN201821815067.0U CN201821815067U CN208923899U CN 208923899 U CN208923899 U CN 208923899U CN 201821815067 U CN201821815067 U CN 201821815067U CN 208923899 U CN208923899 U CN 208923899U
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- battery
- electric cabinet
- supply system
- power supply
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Abstract
The utility model relates to one kind to change electric cabinet energy storage backup power supply system, for charging to battery of electric bicycle, it is characterized in that, including BMS, battery, bus, two-way DC converter and multiple change electric cabinet, change the input termination 220V alternating current of electric cabinet, output end simultaneously couples the bus, two-way DC converter one terminates battery, another termination bus, the BMS is for being managed the state of entire energy storage backup power supply system and charge and discharge, to realize, in low power consumption, alternating current is by changing electric cabinet to battery of electric bicycle charging and being charged a battery again by two-way DC converter, and in peak of power consumption, battery is allowed to discharge through two-way DC converter and charges to battery of electric bicycle.The utility model can reduce power conversion link when electric power storage tank discharge, achieve the purpose that reduce power conversion loss, save the cost, and not need to reduce costs using expensive PCS.
Description
Technical field
The utility model relates to one kind to change electric cabinet energy storage backup power supply system.
Background technique
Changing electric cabinet is a kind of equipment to charge to battery of electric bicycle, converts alternating current to direct current and supplies electricity to battery
Charging.Commercial power time-of-use tariffs difference is larger at present, and changing electric cabinet and increasing energy storage backup power supply system can be realized peak load shifting, can be with
Greatly reduce electric cost expenditure, is the investment that can obtain long-term gain after one kind is put into short term, the favor by many clients.At night
Electricity price is relatively inexpensive, carries out standby electricity to energy-storage system charging, peak times of power consumption on daytime electricity price is more expensive, by energy storage system discharges to electricity
Dynamic bicycle battery charging.It is earned in this way by peak load shifting and takes electricity charge price difference, many electricity charge spendings can be saved.
It is conventional change electric cabinet energy-storage system scheme as shown in Figure 1, this sentences 100kWh energy-storage system for.The system is main
There are two types of operating modes:
Mode one:, electricity price is cheap, and alternating current is charged a battery by current transformer PCS, alternating current the low power consumption phase in the evening
It is charged by changing electric cabinet to battery of electric bicycle；
Mode two: peak times of power consumption on daytime, electricity price is more expensive, electric power storage tank discharge, switchs to alternating current by PCS, alternating current is again
By change electric cabinet be transformed to direct current supply electricity to battery of electric bicycle charging.
At peak times of power consumption on daytime, the electric energy of battery needs to be converted to alternating current, alternating current by PCS Fig. 1 scheme
Using change electric cabinet carry out power conversion can just charge to battery of electric bicycle, have passed through two steps convert, transfer efficiency compared with
It is low, it is lost larger.In addition, PCS cost is also higher.
Summary of the invention
The utility model is intended to provide one kind and changes electric cabinet energy storage backup power supply system, to solve the above problems.For this purpose, this is practical new
The specific technical solution that type uses is as follows:
One kind changing electric cabinet energy storage backup power supply system, for charging to battery of electric bicycle, which is characterized in that described to change electric cabinet
Energy storage backup power supply system includes BMS, battery, bus, two-way DC converter and multiple changes electric cabinet, the input terminal for changing electric cabinet
220V alternating current is connect, the output end for changing electric cabinet simultaneously couples the bus, and the two-way DC converter one terminates the storage
Battery, another termination bus, the BMS are used to be managed the state of entire energy storage backup power supply system and charge and discharge, with
Realize that alternating current is charged and again by described two-way straight by the electric cabinet of changing to battery of electric bicycle in low power consumption
Current converter charges to the battery, and in peak of power consumption, the battery is allowed to discharge through the bidirectional, dc transformation
Device charges to battery of electric bicycle.
Further, the 220V alternating current comes from single-phase alternating current, two-phase alternating current or three-phase alternating current.
Further, the voltage of the bus is 48VDC.
Further, the capacity of the battery is 100kWh.
The utility model by adopting the above technical scheme, has the beneficial effect that the utility model can reduce battery
Power conversion link when electric discharge achievees the purpose that reduce power conversion loss, save the cost, and does not need using valuableness
PCS is reduced costs.
Detailed description of the invention
To further illustrate each embodiment, the utility model is provided with attached drawing.These attached drawings are in the utility model discloses
A part of appearance mainly to illustrate embodiment, and can cooperate the associated description of specification former come the running for explaining embodiment
Reason.Cooperation refers to these contents, and those of ordinary skill in the art will be understood that other possible embodiments and sheet are practical new
The advantages of type.Component in figure is not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
Fig. 1 is the circuit diagram for changing electric cabinet energy storage backup power supply system of the prior art；
Fig. 2 is the circuit diagram for changing electric cabinet energy storage backup power supply system of the utility model.
Specific embodiment
Now in conjunction with the drawings and specific embodiments, the present invention will be further described.
Referring to Fig. 2, describe the utility model changes electric cabinet energy storage backup power supply system.The electric cabinet energy storage backup power supply system that changes can wrap
It includes battery management system (BMS) 1, battery 2, bus (BUS BAR) 4, two-way DC converter 3 and multiple changes electric cabinet 5.It is described
The input termination 220V alternating current of electric cabinet 5 is changed, output end simultaneously couples BUSBAR 4.Two-way DC converter 3 one terminates battery
2, another termination BUS BAR 4.The BMS is used to be managed the state of entire energy storage backup power supply system and charge and discharge etc., with
Realize peak load shifting, power cost saving expenditure.
In Fig. 2, to change the output of electric cabinet 5 as busbar voltage, battery 2 accesses bus by two-way DC converter
BUS BAR；Alternating current accesses BUS BAR 4 by changing electric cabinet 5；Battery of electric bicycle directly takes electricity from BUS BAR 4.
The schematic diagram of Fig. 2 only with 100kWh battery 2, three-phase alternating current, change the rated output voltage of electric cabinet 5 for 48VDC,
It is example that 3, which are changed electric cabinet 5,.In practical application, the volume-variable (can configure according to actual needs) of battery 2, three-phase alternating current
It can be changed to single-phase or two-phase alternating current, the rated output voltage for changing electric cabinet 5 is variable, changes the variable amounts of electric cabinet 5.
Three in Fig. 2 inputs for changing electric cabinet 5 connect three different phases of three-phase alternating current respectively, but can also connect same list
Phase alternating current.
Busbar voltage 48VDC in Fig. 2 is only nominal value, is not necessarily referring to fixed voltage value 48V.It can be according to storage in actual use
The needs of battery management and float up and down.
Fig. 2 is only schematic illustration, protection device needed for not embodying each node.It can be in each control in practical application
Node processed increases protective switch etc., such as in input, outlet side increase breaker or the fuse for changing electric cabinet 5.
Battery can be commercially available nickel-metal hydride battery, nickel-cadmium cell, lithium battery or lead-acid battery etc. in the market.Battery
It can be made of multiple battery units.
There are mainly two types of operating modes for the utility model:
Mode one:, electricity price is cheap the low power consumption phase in the evening, and alternating current is transformed to 48VDC by changing electric cabinet 5, and 48VDC passes through
Two-way DC converter charges to battery 2, and 48VDC charges directly to battery of electric bicycle；
Mode two: peak times of power consumption on daytime, electricity price is more expensive, battery 2 discharge, by two-way DC converter to it is electronic from
Battery of driving a vehicle charges.
Certain power is increased although night, which charges a battery, have passed through 2 step power conversions for the utility model
Loss, but night electricity price is relatively inexpensive, the increased electricity charge of institute are less；And when peak times of power consumption on daytime, the electric energy of battery only passes through
Crossing two-way DC converter can charge to battery of electric bicycle, it is only necessary to which step transformation, transfer efficiency is higher, can be reduced
Loss, the battery so as to the capacity or identical capacity that reduce battery can improve the property of investment in case of the electric longer time
Valence ratio.
Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered
This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details
On the utility model can be made a variety of changes, be the protection scope of the utility model.
Claims (4)
1. one kind changes electric cabinet energy storage backup power supply system, for charging to battery of electric bicycle, which is characterized in that described to change electric cabinet storage
Can backup power supply system include BMS, battery, bus, two-way DC converter and it is multiple change electric cabinet, the input termination for changing electric cabinet
220V alternating current, output end simultaneously couple the bus, and the two-way DC converter one terminates the battery, another termination institute
Bus is stated, the BMS is for being managed the state of entire energy storage backup power supply system and charge and discharge, to realize in low power consumption
Alternating current is charged and again by the two-way DC converter to the storage by the electric cabinet of changing to battery of electric bicycle
Battery charging, and in peak of power consumption, the battery is allowed to discharge through the two-way DC converter and gives electric bicycle electricity
Pond charging.
2. changing electric cabinet energy storage backup power supply system as described in claim 1, which is characterized in that the 220V alternating current comes from blow-up
Galvanic electricity, two-phase alternating current or three-phase alternating current.
3. changing electric cabinet energy storage backup power supply system as claimed in claim 1 or 2, which is characterized in that the voltage of the bus is
48VDC。
4. changing electric cabinet energy storage backup power supply system as claimed in claim 1 or 2, which is characterized in that the capacity of the battery is
100kWh。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821815067.0U CN208923899U (en) | 2018-11-06 | 2018-11-06 | One kind changing electric cabinet energy storage backup power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821815067.0U CN208923899U (en) | 2018-11-06 | 2018-11-06 | One kind changing electric cabinet energy storage backup power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208923899U true CN208923899U (en) | 2019-05-31 |
Family
ID=66711575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821815067.0U Active CN208923899U (en) | 2018-11-06 | 2018-11-06 | One kind changing electric cabinet energy storage backup power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208923899U (en) |
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2018
- 2018-11-06 CN CN201821815067.0U patent/CN208923899U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of energy storage and backup system for power exchange cabinet Effective date of registration: 20210326 Granted publication date: 20190531 Pledgee: Bank of China Limited Xiamen Haicang sub branch Pledgor: POWEROAD (XIAMEN) RENEWABLE ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2021980002126 |