CN107863791A - A kind of synchronous switching circuit of battery cluster - Google Patents
A kind of synchronous switching circuit of battery cluster Download PDFInfo
- Publication number
- CN107863791A CN107863791A CN201710898340.4A CN201710898340A CN107863791A CN 107863791 A CN107863791 A CN 107863791A CN 201710898340 A CN201710898340 A CN 201710898340A CN 107863791 A CN107863791 A CN 107863791A
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- CN
- China
- Prior art keywords
- synchronization unit
- input
- resistance
- output end
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of synchronous switching circuit of battery cluster, including：If dry cell batteries, DCDC units, isolation resistance R0, with the one-to-one synchronization unit of battery pack and with the one-to-one battery management unit of synchronization unit, total anode of each battery pack is connected with total positive relay, total negative terminal is connected with always negative relay, it is connected after the first output end series connection isolation resistance R0 of DCDC units with the first input end of each synchronization unit, the second output end is connected with the second input of each synchronization unit；The digital signal output end connection of the corresponding battery management unit of input control terminal of each synchronization unit, the power output end connection of the corresponding battery management unit of power input, the digital signal input end connection of the corresponding battery management unit of output end.The present invention realizes the synchronous switching of multiple battery packs by the way of hardware circuit, realizes synchronous switching compared to traditional communication modes, synchronous switching signal quick and precisely, substantially increases safety and stability.
Description
Technical field
The present invention relates to energy-storage system control field, more particularly to a kind of synchronous switching circuit of battery cluster.
Background technology
When energy-storage system needs to meet high-power output, it will usually be connected in parallel using multiple battery packs
It is powered to load, now just needs to carry out the operation that multiple battery packs synchronize switching.The battery of energy-storage system at present
Problems be present in the switching operation of group：First, switching is synchronized using communication modes between multiple battery packs, by electricity
The main control unit of pond management system by communicate collect respectively from control unit switching information, through main control unit judgement processing after, then
Under send instructions control respectively from control unit carry out switching action, due to use communication modes carry out switching, when each battery pack exist
During communication delay, the nonsynchronous phenomenon of switching occurs in the switching of each battery pack, is embodied in the relay of each battery pack connection
Device occurs closing and disconnects asynchronous situation, close at first or the relay that finally disconnects on easily occur because of closure or
Person's turn-off current is excessive and causes contact to sinter and generation situations such as adhesion, causes energy-storage system can not normal work；Two
It is that switching mode needs a main control unit to synchronize sending for instruction, coordinates the synchronous switching of each battery group relay, this
Undoubtedly add the cost of manufacture of energy-storage system.
The content of the invention
The purpose of the present invention is to overcome weak point of the prior art, there is provided a kind of synchronous switching circuit of battery cluster.
The purpose of the present invention is achieved through the following technical solutions：
A kind of synchronous switching circuit of battery cluster, including：If dry cell batteries, DCDC units, isolation resistance R0, with it is described
The one-to-one synchronization unit of battery pack and with the one-to-one battery management unit of the synchronization unit, each electricity
Total anode of pond group is connected with total positive relay, and total negative terminal is connected with always negative relay, the first output end of the DCDC units
Connect and be connected with the first input end of each synchronization unit after the isolation resistance R0, the second output end with it is each described
The second input connection of synchronization unit；
The digital signal output end of the corresponding battery management unit of input control terminal of each synchronization unit
Connection, the power output end connection of the corresponding battery management unit of power input, the corresponding electricity of output end
The digital signal input end connection of pond administrative unit；
The control terminal of the corresponding total positive relay of first signal control terminal of each battery management unit
Connection, the control terminal connection of the corresponding total negative relay of secondary signal control terminal.
In one of the embodiments, the synchronization unit includes the first phototriode U1, the second phototriode
U2, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4, the anode series of the first phototriode U1
Join the first input end as the synchronization unit after the first resistor R1, negative electrode is with the second phototriode U2's
The second input after emitter stage as the synchronization unit, colelctor electrode are connected and are used as the synchronization after the 3rd resistor R3
The power input of unit, emitter stage are connected with the negative electrode of the second phototriode U2 and are followed by ground；
The colelctor electrode of the second phototriode U2 connect after the second resistance R2 with the first resistor R1 one
End connects, the input control terminal after anode series connection the 4th resistance R4 as the synchronization unit；
Connecting node between the first phototriode U1 and the 3rd resistor R3 is as the synchronization unit
Output end.
In one of the embodiments, the battery pack is made up of some single battery core series/parallels.
In one of the embodiments, the first resistor R1 is current-limiting resistance.
In one of the embodiments, the second resistance R2 is current-limiting resistance.
In one of the embodiments, the 3rd resistor R3 is current-limiting resistance.
In one of the embodiments, the 4th resistance R4 is current-limiting resistance.
This technical scheme has following beneficial effect compared to prior art：
1. the synchronous switching of multiple battery packs is realized by the way of hardware circuit, it is real compared to traditional communication modes
Now synchronous switching, synchronous switching signal quick and precisely, substantially increase safety and stability.
2. control circuit component constituent is few, it is not necessary to which the higher main control unit of additional cost is realized synchronous
Switching, reduce design cost and design difficulty.
Brief description of the drawings
Fig. 1 is the structural representation of the synchronous switching circuit of the battery cluster in the present embodiment；
Fig. 2 is the circuit theory schematic diagram of the synchronization unit in the present embodiment；
Fig. 3 is the method flow schematic diagram of the synchronous switching in the present embodiment.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to this
Embodiment described by text.On the contrary, the purpose for providing these embodiments makes to understand the disclosure
More thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, technical field of all of technologies and scientific terms used here by the article with belonging to the present invention
The implication that is generally understood that of technical staff it is identical.Term used in the description of the invention herein is intended merely to retouch
State the purpose of specific embodiment, it is not intended that in the limitation present invention.Term as used herein " and/or " include one
Or the arbitrary and all combination of multiple related Listed Items.
It is the structural representation of the synchronous switching circuit of battery cluster as shown in Figure 1, please combines reference picture 2 and Fig. 3 in the lump,
Including：If dry cell batteries (accompanying drawing does not identify), DCDC units 100, isolation resistance R0, same correspondingly with the battery pack
Walk unit 200 and with the one-to-one battery management unit 300 of the synchronization unit 200, each battery pack it is total just
End is connected with total positive relay (accompanying drawing does not identify), and it is mono- that total negative terminal is connected with always negative relay (accompanying drawing does not identify), the DCDC
It is connected after the first output end series connection isolation resistance R0 of member 100 with the first input end of each synchronization unit 200,
Second output end is connected with the second input of each synchronization unit 200；
The data signal of the corresponding battery management unit 300 of input control terminal of each synchronization unit 200
Output end connects, the connection of the power output end of the corresponding battery management unit 300 of power input, output end and its
The digital signal input end connection of the corresponding battery management unit 300；
The control of the corresponding total positive relay of first signal control terminal of each battery management unit 300
End connection processed, the control terminal connection of the corresponding total negative relay of secondary signal control terminal.
Specifically, the synchronization unit 200 includes the first phototriode U1, the second phototriode U2, first resistor
R1, second resistance R2,3rd resistor R3 and the 4th resistance R4, the anode series connection described first of the first phototriode U1
After first input end after resistance R1 as the synchronization unit 200, negative electrode and the second phototriode U2 emitter stage
As the second input of the synchronization unit 200, the synchronization unit is used as after the colelctor electrode series connection 3rd resistor R3
200 power input, emitter stage are connected with the negative electrode of the second phototriode U2 and are followed by ground；
The colelctor electrode of the second phototriode U2 connect after the second resistance R2 with the first resistor R1 one
End connects, the input control terminal after anode series connection the 4th resistance R4 as the synchronization unit 200；
Connecting node between the first phototriode U1 and the 3rd resistor R3 is as the synchronization unit
200 output end.
Specifically, the battery pack is made up of some single battery core series/parallels.
Further, the first resistor R1 is current-limiting resistance.
Further, the second resistance R2 is current-limiting resistance.
Further, the 3rd resistor R3 is current-limiting resistance.
Further, the 4th resistance R4 is current-limiting resistance.
Concrete operating principle is as follows：
When battery management unit 300 detects that battery pack is in ready state or normal state, it is necessary to throw
Cut total positive relay and always bear relay to closure state.Then the digital output port of battery management unit 300 is (i.e. in Fig. 2
DO ports) output low level signal, because of input control terminal (the i.e. Vi ends in Fig. 2 of digital output port and synchronization unit 200
Mouthful) connection, then input control terminal input low level signal.Second phototriode U2 is not turned on, and the first phototriode U1 is led
It is logical, the first input end (i.e. Vbus+ ports in Fig. 2) of synchronization unit 200 and the second input (i.e. Vbus- ends in Fig. 2
Mouthful) voltage difference value be equal to DCDC units 100 output voltage.In the present embodiment, the output voltage of DCDC units 100
It is worth for △ V.So output end (i.e. Vo ports in Fig. 2) the output low level signal of synchronization unit 200, due to synchronization unit
200 output end is connected with the digital signal input end (i.e. DI ports in Fig. 2) of battery management unit 300, and data signal is defeated
Enter and hold input low level, then battery management unit 300 is believed by the first signal control terminal (i.e. RL_NEG in Fig. 2) and second
Number control terminal (i.e. RL_POS in Fig. 2) controls total positive relay closure and always negative relay closure respectively.
When battery management unit 300 detect battery pack at least one be in be not ready to ready state or it is abnormal when,
Need switching always positive relay and always negative relay to off-state.The then digital output port output of battery management unit 300
The input control terminal input high level signal of high level signal, then synchronization unit 200.Second phototriode U2 is turned on, and first
Phototriode U1 is not turned on, and the voltage difference value of the first input end of synchronization unit 200 and the second input is approximately equal to 0V.
So the output end output high level signal of synchronization unit 200, digital signal input end input high level, then battery management list
Member 300 controls total positive relay disconnection respectively by the first signal control terminal and secondary signal control terminal and always negative relay breaks
Open.
It needs to be emphasized that when circuit is in running, as long as there is a battery pack to be changed by normal condition
For abnormality when.Then the digital signal output end mouth of battery management unit 300 corresponding to the battery pack is by low transition
The voltage difference value of high level, first input end and the second input is converted to 0V by △ V, corresponding synchronization unit 200 it is defeated
It is high level to go out end by low transition.Then battery management unit 300 corresponding to all battery packs utilizes the first signal control terminal
Total positive relay and always negative relay are each turned off with secondary signal control terminal, completes the operation of synchronous switching.
Explanation is also needed to, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 are current-limiting resistance,
It is effectively protected circuit.
It should also be noted that, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 are also functioned to
Effect with resistance.
The present invention realizes the synchronous switching of multiple battery packs by the way of hardware circuit, compared to traditional communication side
Formula realizes synchronous switching, and synchronous switching signal quick and precisely, substantially increases safety and stability.
Embodiment described above only expresses several implementation-modes of the present invention, and its description is more specific and detailed, but
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the present invention's
Protection domain.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (7)
- A kind of 1. synchronous switching circuit of battery cluster, it is characterised in that including：If dry cell batteries, DCDC units (100), isolation Resistance R0, with the one-to-one synchronization unit of the battery pack (200) and with the one-to-one electricity of the synchronization unit (200) Pond administrative unit (300), total anode of each battery pack are connected with total positive relay, and total negative terminal is connected with always negative relay Device, the first output end of the DCDC units (100) connect after the isolation resistance R0 with each synchronization unit (200) First input end is connected, and the second output end is connected with the second input of each synchronization unit (200)；The data signal of the corresponding battery management unit (300) of input control terminal of each synchronization unit (200) Output end connects, the connection of the power output end of the corresponding battery management unit (300) of power input, output end and its The digital signal input end connection of the corresponding battery management unit (300)；The control terminal of the corresponding total positive relay of first signal control terminal of each battery management unit (300) Connection, the control terminal connection of the corresponding total negative relay of secondary signal control terminal.
- 2. the synchronous switching circuit of battery cluster according to claim 1, it is characterised in that synchronization unit (200) bag Include the first phototriode U1, the second phototriode U2, first resistor R1, second resistance R2, the electricity of 3rd resistor R3 and the 4th Hinder R4, the anode of the first phototriode U1 connect after the first resistor R1 as the synchronization unit (200) the One input, negative electrode and the second input after the emitter stage of the second phototriode U2 as the synchronization unit (200) End, the power input that colelctor electrode is connected after the 3rd resistor R3 as the synchronization unit (200), emitter stage and described the Two phototriode U2 negative electrode connection is followed by ground；One end after the colelctor electrode series connection second resistance R2 of the second phototriode U2 with the first resistor R1 connects Connect, the input control terminal after anode series connection the 4th resistance R4 as the synchronization unit (200)；Connecting node between the first phototriode U1 and the 3rd resistor R3 is as the synchronization unit (200) Output end.
- 3. the synchronous switching circuit of battery cluster according to claim 1, it is characterised in that the battery pack is by some monomers Battery core series/parallel forms.
- 4. the synchronous switching circuit of battery cluster according to claim 2, it is characterised in that the first resistor R1 is current limliting Resistance.
- 5. the synchronous switching circuit of battery cluster according to claim 2, it is characterised in that the second resistance R2 is current limliting Resistance.
- 6. the synchronous switching circuit of battery cluster according to claim 2, it is characterised in that the 3rd resistor R3 is current limliting Resistance.
- 7. the synchronous switching circuit of battery cluster according to claim 2, it is characterised in that the 4th resistance R4 is current limliting Resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898340.4A CN107863791A (en) | 2017-09-28 | 2017-09-28 | A kind of synchronous switching circuit of battery cluster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898340.4A CN107863791A (en) | 2017-09-28 | 2017-09-28 | A kind of synchronous switching circuit of battery cluster |
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| Publication Number | Publication Date |
|---|---|
| CN107863791A true CN107863791A (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710898340.4A Pending CN107863791A (en) | 2017-09-28 | 2017-09-28 | A kind of synchronous switching circuit of battery cluster |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266834Y (en) * | 2008-09-24 | 2009-07-01 | 西胜国际股份有限公司 | Battery module |
| US20110115438A1 (en) * | 2008-07-08 | 2011-05-19 | Chery Automobile Co., Ltd. | High Voltage Output Monitoring Device and System for a Power Battery |
| US20130141034A1 (en) * | 2011-12-02 | 2013-06-06 | Golden Crown New Energy (Hk) Limited | Charging management system and charger with the same |
| CN106803340A (en) * | 2017-02-28 | 2017-06-06 | 威胜集团有限公司 | MBUS telecommunication circuits, communication means and its measuring instrument being made |
| CN107128191A (en) * | 2017-05-05 | 2017-09-05 | 郑州轻工业学院 | A kind of electric automobile lithium-ion-power cell group voltage synchronous Acquisition Circuit and its control method |
| CN207398871U (en) * | 2017-09-28 | 2018-05-22 | 惠州市蓝微新源技术有限公司 | A kind of synchronous switching circuit of battery cluster |
-
2017
- 2017-09-28 CN CN201710898340.4A patent/CN107863791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110115438A1 (en) * | 2008-07-08 | 2011-05-19 | Chery Automobile Co., Ltd. | High Voltage Output Monitoring Device and System for a Power Battery |
| CN201266834Y (en) * | 2008-09-24 | 2009-07-01 | 西胜国际股份有限公司 | Battery module |
| US20130141034A1 (en) * | 2011-12-02 | 2013-06-06 | Golden Crown New Energy (Hk) Limited | Charging management system and charger with the same |
| CN106803340A (en) * | 2017-02-28 | 2017-06-06 | 威胜集团有限公司 | MBUS telecommunication circuits, communication means and its measuring instrument being made |
| CN107128191A (en) * | 2017-05-05 | 2017-09-05 | 郑州轻工业学院 | A kind of electric automobile lithium-ion-power cell group voltage synchronous Acquisition Circuit and its control method |
| CN207398871U (en) * | 2017-09-28 | 2018-05-22 | 惠州市蓝微新源技术有限公司 | A kind of synchronous switching circuit of battery cluster |
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