CN208571669U - Mobile DC power supply device - Google Patents
Mobile DC power supply device Download PDFInfo
- Publication number
- CN208571669U CN208571669U CN201821225638.5U CN201821225638U CN208571669U CN 208571669 U CN208571669 U CN 208571669U CN 201821225638 U CN201821225638 U CN 201821225638U CN 208571669 U CN208571669 U CN 208571669U
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- China
- Prior art keywords
- battery
- mobile
- module
- power supply
- battery modules
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Links
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 5
- 229910052493 LiFePO4 Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000005955 Ferric phosphate Substances 0.000 description 12
- 229940032958 ferric phosphate Drugs 0.000 description 12
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 12
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 12
- 238000012423 maintenance Methods 0.000 description 5
- 238000007667 floating Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses mobile DC power supply device, including multiple battery modules, each battery modules include multiple concatenated lithium batteries, connect with lithium battery and are located at the inductance and IGBT device of battery module positive terminal；The positive terminal being connected with each IGBT device；The negative terminals being connected with each battery modules cathode；The battery management module being connected with lithium battery each in each battery modules；With the CPU module of connection battery management module and each IGBT device control terminal.The utility model uses the battery parallel connection group technology of high reliability, parallel units can charge independence, electric discharge, no storage battery circulation phenomenon, some parallel units or part in parallel unit break down, the ability of the mobile power source supplying power for outside is not influenced, the safety of the mobile power source is greatly improved, is charged using battery unit of the direct current system to the present apparatus, without configuring charging module, reduce equipment size, equipment cost is reduced, O&M process is simplified, improves Supply Security.
Description
Technical field
The utility model relates to direct current system O&M field more particularly to mobile DC power supply devices.
Background technique
Battery group in transformer station direct current system plays the safe operation of substation most important as backup power supply
Effect.Storage batteries of transformer substation is easy to appear the exception such as battery pack open circuit or capacity decline, and this because being chronically at floating charge state
Class is generally difficult to find under floating charge state extremely, it is therefore desirable to periodically carry out core to battery and hold inspection.
It is only equipped with a group storage battery in the transformer station direct current system of part, when needing to carry out core to battery to hold maintenance, needs
Battery to be safeguarded is replaced using reserve battery, there are circulation risks for two groups of batteries in replacement process.Substation uses at present
Reserve battery be all lead-acid accumulator, cannot achieve mobile DC power supply requirement, need all to match in each website and purchase
With battery group, and these reserve batteries are also required to carry out regularly maintenance management, and the battery for greatly increasing substation is adopted
Purchase and O&M cost.
In addition, when there is performance decline and when cannot replace in time battery group in the battery group of substation, work in spite of illness
There are great security risks for the battery group of work, if having can not have with mobile direct-current power source device in battery
Play the role of good emergency guarantee before being replaced.
For ferric phosphate lithium cell compared with lead-acid accumulator, energy ratio is 4-5 times of the latter, small in size, light weight.Part factory
Continuous-current plant of the quotient using plumbic acid lithium iron battery as movable type, while charging module and corresponding switching switch need to be configured
For charging to battery module, cause device volume huge, wiring is complicated.And ferric phosphate lithium cell is after accessing direct current system
In floating charge electricity condition, due to the charge-discharge characteristic of ferric phosphate lithium cell, overcharge easily occur causes cell damage even to explode
Risk.
Utility model content
In order to overcome the deficiencies of the prior art, to only have the substation of a group storage battery to provide electric discharge maintenance method, this is practical
Novel proposition mobile DC power supply device.The technical solution of the utility model is achieved in that
Mobile DC power supply device, comprising:
Multiple battery modules, each battery modules include multiple concatenated lithium batteries, with the lithium battery connect and be located at
The inductance and IGBT device of battery module positive terminal；
The positive terminal being connected with each IGBT device；
The negative terminals being connected with each battery modules cathode；
The battery management module being connected with lithium battery each in each battery modules；With
Connect the CPU module of the battery management module and each IGBT device control terminal.
Further, the lithium battery is ferric phosphate lithium cell.
Further, the battery management module includes voltage acquisition module, for acquiring each lithium battery voltage data, institute
It states battery management module and carries out charge balancing management.
Further, the CPU module is also connected with display device, and the display device is for showing each battery modules
Status information.
Further, the positive terminal is also connected with rectifier, for a battery modules charging.
Compared with prior art, the utility model has the beneficial effects that:
1, compared with using reserve battery, the present apparatus uses the battery parallel connection group technology of high reliability, parallel units
Can charge independence, electric discharge, no storage battery circulation phenomenon greatly improves the safety of battery maintenance process；
2, it compared with conventional mobile DC power supply, is directly charged to battery using DC bus, without configuring charging
Module, it is simple and reliable for structure, it is greatly reduced equipment volume, reduces equipment cost；
3, the use of the present apparatus can simplify O&M process, later again will battery be safeguarded by this product access direct current system
Exit direct current system, after battery core capacity charge to be safeguarded is completed, the present apparatus after detecting that battery unit electricity has been filled with,
Direct current system can be exited；
4, this mobile DC power supply device can be directly articulated on the bus of existing direct current system, will not be with original
Some direct current system batteries form circulation, can greatly improve the safety of original direct current system.
Detailed description of the invention
Fig. 1 is the utility model mobile DC power supply device realization principle figure.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Figure 1, the utility model mobile DC power supply device, comprising:
Multiple battery modules, each battery modules include multiple concatenated lithium batteries, with the lithium battery connect and be located at
The inductance and IGBT device of battery module positive terminal；
The positive terminal being connected with each IGBT device；
The negative terminals being connected with each battery modules cathode；
The battery management module being connected with lithium battery each in each battery modules；With
Connect the CPU module of the battery management module and each IGBT device control terminal.Further, each IGBT device
Part one end connects each inductance, and the other end connects positive terminal, and each ferric phosphate lithium cell group cathode connects negative terminals,
Positive and negative anodes terminals are directly accessed the positive and negative anodes of direct current system.
Wherein IGBT device and inductance, ferric phosphate lithium cell group are being respectively connected to direct current system just through positive and negative anodes terminals
Cathode forms the independent charging and discharging circuit in parallel of multiple groups.Any battery mould group can independent supplying power for outside, any battery mould group is equal
It can individually be charged by DC bus, without being influenced by other battery modules.
The CPU module is connect with the control terminal of the battery management module, each IGBT device respectively, is realized to electricity
The management of the charge-discharge machine equalizaing charge in pond.
The battery management module is connect with each ferric phosphate lithium cell, acquires the data such as the voltage of each battery and as battery
The basic data of management of charging and discharging, the CPU module are also connected with display device, and the display device is for showing each battery mould
The status information of group.
The charge and discharge control principle of the utility model is as follows:
The positive and negative anodes terminals of the utility model are directly connected to DC bus positive and negative anodes.When CPU module controls IGBT device
When conducting, if the voltage of DC bus is higher than ferric phosphate lithium cell group at this time, DC bus charges to battery modules.It is logical
The on-off frequency for crossing adjustment IGBT device can control the size of charging voltage/electric current.When CPU module control IGBT device is not turned on
When, it is connected between DC bus and battery through the diode inside IGBT device, when the voltage on DC bus is greater than battery
When group voltage, diode is not turned on；The diode current flow when the voltage on DC bus is lower than battery modules voltage, makes battery mould
Group is seamless to load supplying.
Below by the description to embodiment, to for example related each component of specific embodiment of the present utility model
The works such as shape, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle are further detailed
It describes in detail bright.
In one embodiment of the utility model, the voltage class of mobile DC power supply device is 110V, battery capacity
For 200AH, includes multiple groups in parallel and connected groups of battery modules by several ferric phosphate lithium cells, battery management module,
IGBT device mould group, positive and negative anodes terminals and CPU module etc..If using the ferric phosphate lithium cell of 3.2V/50AH, required battery
Amount of monomer is 136, and every 34 are connected into one group, totally 4 groups of battery packs.Wherein 4 groups of inductance, 4 groups of IGBT device, inductance and
The selection of IGBT device should meet power requirement.
Wherein, IGBT device mould group, the inductance mould group, the ferric phosphate lithium cell group, through the positive and negative anodes terminals
The positive and negative anodes of direct current system are respectively connected to, 4 groups of independent charging and discharging circuits in parallel are formed.Each group battery can be independently load
It is powered, any group of battery failure only influences power supply capacity and the time of the present apparatus, when 4 groups of battery packs are opened a way
It just will appear the case where can not powering, greatly improve the safety of the present apparatus.
It is as follows using the battery O&M process of the present apparatus:
Step 1: the positive and negative anodes terminals of the present apparatus are directly connected to direct current system positive and negative anodes；
Step 2: battery to be safeguarded is exited direct current system, carries out core and hold attended operation；
Step 3: the present apparatus is used as the backup power source of direct current system at this time, if the battery unit battery of CPU detection device holds
Amount is insufficient, can charge automatically by the on-off of control IGBT device module to battery unit；If battery unit is full capacity
And DC bus-bar voltage is higher than battery unit, then IGBT device is not turned on, avoid ferric phosphate lithium cell be in floating charge electricity condition and
Appearance overcharges risk；If DC bus decompression is abnormal at this time, the diode current flow inside IGBT device at this time, make battery pack without
Seam is to load supplying.
Step 4: the battery that maintenance is completed is taken back direct current system, the battery pack of the present apparatus is charged by direct current system
Direct current system can be exited when to full capacity state.
The present apparatus is charged in battery O&M process by direct current system, can also be by corresponding when not accessing direct current system
The charging module access positive and negative anodes terminals of grade directly charge to battery modules.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (5)
1. mobile DC power supply device characterized by comprising
Multiple battery modules, each battery modules include multiple concatenated lithium batteries, connect with the lithium battery and be located at battery
The inductance and IGBT device of module positive terminal；
The positive terminal being connected with each IGBT device；
The negative terminals being connected with each battery modules cathode；
The battery management module being connected with lithium battery each in each battery modules；With
Connect the CPU module of the battery management module and each IGBT device control terminal.
2. mobile DC power supply device as described in claim 1, which is characterized in that the lithium battery is LiFePO4 electricity
Pond.
3. mobile DC power supply device as described in claim 1, which is characterized in that the battery management module includes voltage
Acquisition module, for acquiring each lithium battery voltage data, the battery management module carries out charge balancing management.
4. mobile DC power supply device as described in claim 1, which is characterized in that the CPU module is also connected with display
Device, the display device are used to show the status information of each battery modules.
5. mobile DC power supply device as described in claim 1, which is characterized in that the positive terminal is also connected with whole
Device is flowed, for a battery modules charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821225638.5U CN208571669U (en) | 2018-08-01 | 2018-08-01 | Mobile DC power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821225638.5U CN208571669U (en) | 2018-08-01 | 2018-08-01 | Mobile DC power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208571669U true CN208571669U (en) | 2019-03-01 |
Family
ID=65449066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821225638.5U Active CN208571669U (en) | 2018-08-01 | 2018-08-01 | Mobile DC power supply device |
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| Country | Link |
|---|---|
| CN (1) | CN208571669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110957543A (en) * | 2019-12-27 | 2020-04-03 | 广东电网有限责任公司电力科学研究院 | A group system and charging method of a floating-free battery |
| CN115102247A (en) * | 2022-06-16 | 2022-09-23 | 上海置信能源综合服务有限公司 | Direct current power supply system |
-
2018
- 2018-08-01 CN CN201821225638.5U patent/CN208571669U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110957543A (en) * | 2019-12-27 | 2020-04-03 | 广东电网有限责任公司电力科学研究院 | A group system and charging method of a floating-free battery |
| CN115102247A (en) * | 2022-06-16 | 2022-09-23 | 上海置信能源综合服务有限公司 | Direct current power supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240207 Address after: Room 1031, Building H6, No. 39 Ruihe Road, Huangpu District, Guangzhou City, Guangdong Province, 510700, Room 1040, Building H6 Patentee after: Guangdong Tongshun Energy Technology Development Co.,Ltd. Country or region after: China Address before: Room 342, No. 161 Tianfu Road, Tianhe District, Guangzhou City, Guangdong Province, 510630 Patentee before: GUANGZHOU HONGQUAN ENERGY TECHNOLOGY Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |