CN207819528U - A kind of echelon battery pack power supply system for communications - Google Patents
A kind of echelon battery pack power supply system for communications Download PDFInfo
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- CN207819528U CN207819528U CN201820320618.XU CN201820320618U CN207819528U CN 207819528 U CN207819528 U CN 207819528U CN 201820320618 U CN201820320618 U CN 201820320618U CN 207819528 U CN207819528 U CN 207819528U
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- echelon
- battery pack
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Abstract
The utility model provides a kind of echelon battery pack power supply system for communications, including main echelon lithium battery group, spare echelon lithium battery group, echelon battery pack control device, Switching Power Supply and load, wherein echelon battery pack control device is connected between echelon battery pack and Switching Power Supply, by the detection of line voltage, DC voltage, echelon battery voltage and battery pack current, switching and the management of charging and discharging of online battery pack are completed；In arbitrary period, control only has one group of echelon lithium battery group online, effectively prevents battery pack circulation problem caused by different capabilities, different brands, different state-of-charges, and ensure in battery pack handoff procedure not fall to carry by inside contactor.
Description
Technical field
The utility model is related to a kind of echelon battery pack power supply system for communications.
Background technology
With the fast development of China's new-energy automobile industry, be dropped in the dynamic lithium battery quantity in electric vehicle field by
Year increases, these enter the power battery in market, and the end-of-life condition (capacity of design was generally up at 3~5 years or so
Decay to the 80% of initial capacity).It is predicted according to China Automotive Technology ＆ Research Center, arrives the year two thousand twenty, China's electric powered motor lithium
Battery adds up learies and is up to 120,000~170,000 tons.If dealt with improperly, the wasting of resources is not only resulted in, environment can also be made
At serious pollution.Compared with lead-acid accumulator, for power lithium-ion battery after capacity attenuation to 80%, cycle life is still reachable
To 500 times or more, and still have higher energy density and stronger thermal adaptability compared with lead-acid accumulator.
As stand-by power supply in three classes alternating current base station applies scene, monthly has a power failure and be no more than 4.5 times, be no more than 54 times within 1 year, use
Frequency is relatively low.Therefore, communication base station provides scale, mass application field for echelon using battery.To automobile-used retired dynamic
Power battery carries out echelon utilization, can form the good use value for recycling economic model, giving full play to power battery,
Using the theories such as green economy, low-carbon economy, circular economy are embodied, its propulsion and implementation will produce the echelon of retired battery
Raw huge economic benefit and social benefit.
And in practical applications, retired dynamic lithium battery is greatly mostly from different vehicles, different manufacturers, therefore
There are larger differences in performance using lithium battery group for the 48V echelons formed with retired dynamic lithium battery, if using only property
Preferably echelon lithium battery group can be utilized, eliminate the poor echelon of performance and utilize lithium battery group, it is electric using lithium to will result in echelon
The phenomenon that pond group selects difficulty, and availability is low, the wasting of resources.
And in present communications base station, 48V battery packs are used mainly as backup power supply, only when mains failure,
Just utilize battery pack to load of base station power, since domestic alternating current is preferable, power failure probability is relatively low, thus battery pack be chronically at it is floating
State is filled, but the floating charge under highly charged state can cause the irreversible capacity loss of lithium battery, greatly reduce lithium battery group
Service life.Long-term floating charge makes base station switch mains-powered apparatus be chronically at energy consumption state simultaneously.
To solve the above problems, there is scholar to propose directly to replace the side of former lead-acid batteries using 48V echelons battery pack
Case, although the program can efficiently use echelon and be generally required multigroup using battery pack since echelon battery capacity is limited
Parallel connection, battery pack parallel connection is also easy to produce circulation, while battery pack not only influences battery pack service life, but also make still in floating charge state
At the lasting energy consumption of switch power supply equipment, the application scenarios of the program also made are more limited.
Utility model content
Technical problem to be solved in the utility model is：In order to overcome deficiency in the prior art, the utility model to carry
For a kind of echelon battery pack power supply system for communications, to solve directly to use lithium electricity to replace of high cost, the floating charge longevity existing for plumbic acid
Order short, and the circulation for directly using different capabilities, different brands, different state-of-charge echelon lithium battery group parallel connection to generate asks
Topic.
The utility model solves its technical problem technical solution to be taken：A kind of echelon battery pack communication power supply system
System, including two groups of echelon lithium battery groups of main echelon lithium battery group and spare echelon lithium battery group, echelon battery pack control device, open
Powered-down source and load, the echelon battery pack control device is connected between Switching Power Supply and two groups of echelon lithium battery groups, described
Echelon battery pack control device include positive copper bar, cathode copper bar, main contactor K1, auxiliary contactor K2, main contactor K3 and
The anode of auxiliary contactor K4, the Switching Power Supply are connected to positive copper bar, the main echelon lithium battery group and spare echelon lithium
The anode of battery pack is all connected with positive copper bar, and the one end the main contactor K1 is connected by cathode copper bar with Switching Power Supply cathode,
The other end is connected with main echelon lithium battery group cathode；The one end the auxiliary contactor K2 passes through cathode copper bar and Switching Power Supply cathode
It is connected, the other end is connected by backward dioded with main echelon lithium battery group cathode；The one end the main contactor K3 passes through cathode
Copper bar is connected with Switching Power Supply cathode, and the other end is connected with spare echelon lithium battery group cathode；The one end the auxiliary contactor K4
It is connected with Switching Power Supply cathode by cathode copper bar, the other end passes through backward dioded and spare echelon lithium battery group cathode phase
Even；The load is connected between positive copper bar and cathode copper bar；And arbitrary period, the echelon battery pack control device control
One group of echelon lithium battery group in only main echelon lithium battery group and spare echelon lithium battery group is online.Main echelon battery pack refers to
The retired power battery pack of better performances, has certain cycle life, can be used to do the peak load that disappears.Spare echelon battery pack refers to
The poor retired power battery pack of performance is primarily used to be used as the echelon electricity of standby electricity when mains failure or master battery pack failure
Pond group.
Main echelon battery pack, spare echelon battery pack cathode pass through the main and auxiliary contactor of battery pack control device respectively
It is connected with cathode copper bar, main and auxiliary contactor is controlled by echelon battery pack control device respectively, main echelon lithium battery group and spare ladder
The anode of secondary lithium battery group is connected with the positive copper bar of battery pack control device respectively；The anode of Switching Power Supply is controlled with battery pack
The positive copper bar of device is connected, and the cathode of Switching Power Supply is connected with the cathode copper bar of battery pack control device；Battery pack control dress
Two groups of different capabilities, different brands, different state-of-charge echelon lithium battery groups can be accessed simultaneously by setting, and arbitrary period, control is only
There is one group of echelon lithium battery group online, effectively prevents battery pack caused by different capabilities, different brands, different state-of-charges
Circulation problem.
Further, when switching to spare echelon lithium battery group by main echelon lithium battery group, the echelon battery pack control
Device controls main contactor K1, auxiliary contactor K2, main contactor K3 and auxiliary contactor K4 and realizes no-delay switching, and waits breaking
The contactor opened needs delay a period of time after contactor to be closed is closed to disconnect again.Battery pack control device passes through inside
Main and auxiliary contactor complete two groups of echelon lithium battery groups no-delay switching.
Further, node interface, and the echelon battery pack control device are done in the echelon battery pack control device configuration
It is connect with two groups of main echelon lithium battery group and spare echelon lithium battery group by dry node.Battery is utilized to receive any echelon
The fault alarm signal that group is sent, the connection of cut-out and online failure echelon lithium battery group, is quickly switched into another set echelon
Lithium battery group, be concurrently out of order alarm signal.
Echelon battery pack control device is communicated using lithium battery group by dry node with the echelon of two groups of different conditions,
When arbitrary echelon lithium battery group breaks down, it is quickly switched into another set echelon lithium battery group, is loaded not in handoff procedure
It operates intermittently.
Specifically, the echelon battery pack control device configuration RS485 interfaces are connect with the Switching Power Supply.Echelon battery
Group control device is communicated with Switching Power Supply by RS485, and cooperation Switching Power Supply completes the management of echelon battery pack jointly, real
Existing battery capacity extension and the new and old utilization of battery pack.
Specifically, the main echelon lithium battery group and spare echelon lithium battery group be two groups of different capabilities, different brands and
The echelon lithium battery group of different state-of-charges.
Specifically, the main echelon lithium battery group and spare echelon lithium battery group are by the 15 or 16 string retired power of electric vehicle
Lithium battery and mating battery management system composition.
Further, the echelon battery pack control device is additionally operable to when alternating current is normal, according to different periods electricity price, to master
Echelon battery pack carries out charge and discharge；In city when electrical anomaly, and at the end of the electric discharge of main echelon lithium battery group, automatically switch to spare ladder
Primary cell group has ensured the uninterrupted power supply of load.
Alternating current under normal circumstances, it is preferentially that spare echelon battery pack is fully charged, then according to local electricity price between peak and valley,
In electricity price low-valley interval, charge to main echelon battery pack；Peak valley is passed through to main echelon battery power discharge in electricity price peak period
Price difference obtains income；In mains failure, the good echelon battery power discharge of preference energy, when echelon battery power discharge reaches
It is crossed to single battery or battery pack when putting warning value, the echelon battery pack for automatically switching to floating charge standby continues to power, to ensure
The uninterrupted power supply of load of base station.
The utility model has the beneficial effects that：A kind of echelon battery pack power supply system for communications provided by the utility model is led to
It crosses and battery is utilized using the echelon of two groups of different capabilities of echelon battery pack control device connection, different brands, different state-of-charges
Group, in arbitrary period, control only has one group of echelon lithium battery group online, makes to be effectively isolated between battery pack, efficiently solve ladder
The primary cell group circulation directly in parallel generated, while the echelon battery pack of different conditions can be rationally utilized, improve echelon battery
The utilization rate of group, and the peak load function that disappears is realized respectively according to battery performance, bring income for user.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the best embodiment of the utility model.
Specific implementation mode
The utility model is described in detail presently in connection with attached drawing.This figure is the schematic diagram of simplification, only in a schematic way
Illustrate the basic structure of the utility model, therefore it only shows composition related with the utility model.
As shown in Figure 1, a kind of echelon battery pack power supply system for communications of the utility model, including main echelon lithium battery group and
Two groups of echelon lithium battery groups of spare echelon lithium battery group, echelon battery pack control device, Switching Power Supply and load, the echelon electricity
Pond group control device is connected between Switching Power Supply and two groups of echelon lithium battery groups, passes through line voltage, DC voltage, echelon electricity
Switching and the management of charging and discharging of online battery pack are completed in the detection of pond group voltage and battery pack current；The echelon battery pack control
Device processed includes positive copper bar, cathode copper bar, main contactor K1, auxiliary contactor K2, main contactor K3 and auxiliary contactor K4,
The anode of the Switching Power Supply is connected to positive copper bar, and the anode of the main echelon lithium battery group and spare echelon lithium battery group is
The positive copper bar of connection, the one end the main contactor K1 are connected by cathode copper bar with Switching Power Supply cathode, the other end and main echelon
Lithium battery group cathode is connected；The one end the auxiliary contactor K2 is connected by cathode copper bar with Switching Power Supply cathode, and the other end is logical
Backward dioded is crossed with main echelon lithium battery group cathode to be connected；The one end the main contactor K3 passes through cathode copper bar and Switching Power Supply
Cathode is connected, and the other end is connected with spare echelon lithium battery group cathode；The one end the auxiliary contactor K4 by cathode copper bar with
Switching Power Supply cathode is connected, and the other end is connected by backward dioded with spare echelon lithium battery group cathode；The load connection
Between positive copper bar and cathode copper bar.
Wherein battery pack control device has different echelons using the management of charging and discharging of lithium battery group, the function of switching, and
And the peak load that disappears can be carried out in conjunction with echelon battery performance according to local electrovalence policy, obtain electricity charge income.
Battery pack control device can access the echelon lithium battery group of two groups of different capabilities, state-of-charge, phase between battery pack
Mutually isolation, is not in circulation, can effectively keep the service life cycle of echelon battery pack；Alternating current under normal circumstances, battery
The group preferably main echelon lithium battery group of control device control performance is timed charge and discharge cycles, realizes different time sections alternating current money
Take the reasonable utilization of electric energy in the case of rising and falling.When mains failure and main echelon lithium battery group was discharged to and puts undervoltage alarm threshold value,
Battery pack control device automatically switches to spare echelon lithium battery group by internal main and auxiliary contactor and discharges, and ensures battery
Do not fall to carry in group handoff procedure, to ensure the uninterrupted power supply of load of base station.It is cut by main echelon lithium battery group in the present embodiment
When shifting to spare echelon lithium battery group, the transfer sequence of contactor is to be closed auxiliary contactor K2 delays t to disconnect main contactor K1；
It is closed auxiliary contactor K4 delays t and disconnects auxiliary contactor K2；It is closed main contactor K3 delays t and disconnects auxiliary contactor K4, prolong
When time t be configured as needed, between difference switch time for switching can be the same or different.Battery pack control simultaneously
Device processed is communicated with main echelon lithium battery group and spare echelon lithium battery group respectively by dry node interface, when any echelon
When the failures such as short circuit, excess temperature, pressure difference be excessive occur for battery pack, the company of battery pack control device cut-out and online echelon lithium battery group
It connects, is quickly switched into another set echelon lithium battery group, non-stop run is loaded in handoff procedure, and externally carry out alarm acousto-optic
It has been shown that, to ensure the safety of echelon battery pack.
Echelon battery pack control device is communicated by RS485 communication interfaces with Switching Power Supply with Switching Power Supply, cooperation
Switching Power Supply completes the management of charging and discharging of echelon battery pack.Starting in charge and discharge process, battery pack control device is except completion
Outside the management of charging and discharging of online battery pack, it is also necessary to be completed according to the abnormal conditions of alternating current, the abnormal conditions of battery pack corresponding
Control, state judgement when system normal operation include mainly four parts：Alternating current is normal, city's electrical anomaly, alternating current are sent a telegram here, battery
Group failure, the management of charging and discharging of two groups of different conditions echelon lithium battery groups is completed by city's electricity condition, when arbitrary echelon lithium battery
When group breaks down, then controller will automatically cut off corresponding contactor, and fail battery group is out of service, alarm of being concurrently out of order
Signal.
Alternating current under normal circumstances, control device device is preferentially fully charged by spare echelon battery pack, then according to local
Electricity price between peak and valley charges to main echelon battery pack in electricity price low-valley interval；In electricity price peak period, main echelon battery pack is put
Electricity obtains income by peak valley price difference.In mains failure, control device preferentially selects online battery power discharge, and
It is quickly switched into main echelon battery power discharge, when main echelon battery power discharge reaches single battery or battery pack reached and puts alarm
When value, control device, which is switched to spare echelon battery pack, to be continued to power, to ensure the uninterrupted power supply of load of base station.
The power-supply system utilizes lithium battery group using the 48V echelons of two groups of different capabilities, different brands, different state-of-charges
It is powered, the switching of two groups of difference echelon battery packs is realized by control device, one group of echelon electricity is utilized compared to conventional
The power supply plan of pond group, the standby Electricity Functional after mains failure had not only may be implemented in the program, but also can be led to according to local electrovalence policy
It crosses peak valley price difference and realizes income.Further, it is also possible to eliminate due to the different battery packs circulation problem directly in parallel generated；And it can
, can also be different according to the state of echelon battery pack to overcome due to the different battery packs circulation problem directly in parallel generated, spirit
Application living, improves the utilization rate of echelon battery, has wider application field and application reliability.
Therefore, the power-supply system is while solution lithium battery group float life is short, the spirit of charge and discharge control and switching
Active and no-delay property is not affected, while can be different according to the performance of echelon lithium battery group, efficiently uses echelon utilization
Lithium battery group greatly improves retired dynamic lithium battery group application field adaptability, and also substantially increase that system uses can
By property and flexibility.
It is enlightenment, through the above description, relevant work with the above-mentioned desirable embodiment according to the utility model
Personnel can carry out various changes and amendments in without departing from the scope of the utility model completely.This item utility model
Technical scope is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (7)
1. a kind of echelon battery pack power supply system for communications, it is characterised in that：Including main echelon lithium battery group and spare echelon lithium electricity
Two groups of echelon lithium battery groups of pond group, echelon battery pack control device, Switching Power Supply and load, the echelon battery pack control device
It is connected between Switching Power Supply and two groups of echelon lithium battery groups, the echelon battery pack control device includes positive copper bar, cathode
Copper bar, main contactor K1, auxiliary contactor K2, main contactor K3 and auxiliary contactor K4, the anode connection of the Switching Power Supply
To positive copper bar, the anode of the main echelon lithium battery group and spare echelon lithium battery group is all connected with positive copper bar, and the master connects
The one end tentaculum K1 is connected by cathode copper bar with Switching Power Supply cathode, and the other end is connected with main echelon lithium battery group cathode；It is described
The one end auxiliary contactor K2 is connected by cathode copper bar with Switching Power Supply cathode, and the other end passes through backward dioded and main echelon lithium
Battery electrode is connected；The one end the main contactor K3 is connected by cathode copper bar with Switching Power Supply cathode, the other end with it is spare
Echelon lithium battery group cathode is connected；The one end the auxiliary contactor K4 is connected by cathode copper bar with Switching Power Supply cathode, another
End is connected by backward dioded with spare echelon lithium battery group cathode；The load be connected to positive copper bar and cathode copper bar it
Between；And arbitrary period, the echelon battery pack control device control only have main echelon lithium battery group and spare echelon lithium battery group
In one group of echelon lithium battery group it is online.
2. the echelon battery pack power supply system for communications as described in claim 1, it is characterised in that：It is cut by main echelon lithium battery group
When shifting to spare echelon lithium battery group, the echelon battery pack control device control main contactor K1, auxiliary contactor K2, master connect
Tentaculum K3 and auxiliary contactor K4 realizes no-delay switching, and contactor to be broken needs after contactor to be closed is closed
Delay a period of time disconnects again.
3. the echelon battery pack power supply system for communications as described in claim 1, it is characterised in that：The echelon battery pack control dress
It sets configuration and does node interface, and the echelon battery pack control device passes through dry node and main echelon lithium battery group and spare echelon
Two groups of connections of lithium battery group.
4. the echelon battery pack power supply system for communications as described in claim 1, it is characterised in that：The echelon battery pack control dress
Configuration RS485 interfaces are set to connect with the Switching Power Supply.
5. the echelon battery pack power supply system for communications as described in claim 1, it is characterised in that：The main echelon lithium battery group and
Spare echelon lithium battery group is the echelon lithium battery group of two groups of different capabilities, different brands and different state-of-charges.
6. the echelon battery pack power supply system for communications as described in claim 1, it is characterised in that：The main echelon lithium battery group and
Spare echelon lithium battery group is made of the 15 or 16 string retired dynamic lithium batteries of electric vehicle and mating battery management system.
7. the echelon battery pack power supply system for communications as described in claim 1, it is characterised in that：The echelon battery pack control dress
It sets and is additionally operable to when alternating current is normal, according to different periods electricity price, charge and discharge are carried out to main echelon battery pack；In city when electrical anomaly,
And at the end of main echelon lithium battery group electric discharge, automatically switch to spare echelon battery pack.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820320618.XU CN207819528U (en) | 2018-03-08 | 2018-03-08 | A kind of echelon battery pack power supply system for communications |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820320618.XU CN207819528U (en) | 2018-03-08 | 2018-03-08 | A kind of echelon battery pack power supply system for communications |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739741A (en) * | 2019-10-28 | 2020-01-31 | 上海煦达新能源科技有限公司 | Low-voltage direct-current coupling management system of high-voltage power battery in communication base station |
-
2018
- 2018-03-08 CN CN201820320618.XU patent/CN207819528U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739741A (en) * | 2019-10-28 | 2020-01-31 | 上海煦达新能源科技有限公司 | Low-voltage direct-current coupling management system of high-voltage power battery in communication base station |
| CN110739741B (en) * | 2019-10-28 | 2023-03-31 | 上海煦达新能源科技有限公司 | Low-voltage direct-current coupling management system of high-voltage power battery in communication base station |
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| CP03 | Change of name, title or address |
Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee after: Kaibo Energy Technology Co.,Ltd. Patentee after: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address before: No.88 Jintan Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: CHINA AVIATION LITHIUM BATTERY RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee after: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Patentee after: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. Address before: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee before: Kaibo Energy Technology Co.,Ltd. Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220120 Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee after: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Patentee after: Zhongchuangxin Aviation Technology Co.,Ltd. Address before: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee before: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |