CN207184077U - A kind of control system of lithium battery group and there is its lithium battery group device - Google Patents
A kind of control system of lithium battery group and there is its lithium battery group device Download PDFInfo
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- CN207184077U CN207184077U CN201720676451.6U CN201720676451U CN207184077U CN 207184077 U CN207184077 U CN 207184077U CN 201720676451 U CN201720676451 U CN 201720676451U CN 207184077 U CN207184077 U CN 207184077U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
It the utility model is related to a kind of control system of lithium battery group and there is its lithium battery group device, including from control module and main control module, two-way level signal is exported after the described state from control module by detecting lithium battery, described main control module receives above-mentioned two-way level signal and judged, output control signal changes the state of lithium battery group afterwards.Lithium battery group device is made up of the parallel connection of some lithium battery groups, series connection or series-parallel connection.Discharge and recharge and the judgement of internal temperature are mainly carried out by two-way level signal, simplify criterion, improves efficiency；The control system of lithium battery has perfect defencive function, can be effectively protected the work that lithium battery is reliable, safe；And battery system realizes standardization, modularization, system module can arbitrarily combined serial, parallel connection and series-parallel connection, with cost is low, reliability is high, is easy to the advantages of scale and standardized production, there is very strong practicality.
Description
Technical field
Technical field of lithium batteries is the utility model is related to, a kind of control system more particularly, to lithium battery group and there is it
Lithium battery group device.
Background technology
With the development of New Energy Industry, lithium battery has obtained more being widely applied, and lithium battery has high power capacity, longevity
The advantages of ordering, be in light weight, green, gradually reduces in the cost of lithium battery, and under the conditions of performance improves constantly, lithium battery is each
Obtain more being widely applied in kind dynamical system.
The voltage of lithium battery itself only has 3.6V or 3.7V, and monomer capacity is at several Ah or tens under normal circumstances
Ah, in actual applications, it is necessary to which battery is carried out into combination in series or in parallel, with reach operating voltage needed for electrical equipment or
Displacement volume.Conventional application scenarios are all the different demands according to client to battery system capacity, voltage at present, according to client
The space of offer, customized development are directed to the battery pack of different shapes of different user demands.Due to being developed for specific products,
This kind of lithium battery group is only applicable to specific products, does not typically have the characteristics of versatility, causes the development cost of product higher,
Construction cycle is all long, and product can not form modularization and generalization, and the specific products that can only be directed to batch uses.
In traditional power battery applications field, lead-acid battery occupies very big share.Lead-acid battery has cost low, makes
With it is simple the advantages of, the environmental hazard of heavy metal pollution be present in lead-acid battery.Conventional lead-acid battery, typically with 6V, 8V,
Several conventional voltage series of 12V, capacity aspect have different fixed series, and product design has formed standardization, in industry
Lead-acid battery, which has, in middle actual use arbitrarily to combine series-parallel, have and facilitate in groups, combinations of voltages is easily excellent
Point.And lithium battery is in actual applications, be typically designed as a fixed casing, using Integral design, it is actual in groups after
Lithium battery group, voltage and increase capacity can not be improved by the way of direct series, parallel, in actual use without image of Buddha lead
Sour battery equally carries out connection in series-parallel combination using standardization module, so as to greatly limit the application of lithium battery.
Lithium battery needs to increase battery protection system in use, from technical principle, using the lithium of GPF (General Protection False plate
Battery pack, after multiple battery systems are directly connected, one of protection circuit is after over, although the battery system can
To turn off the discharge loop of itself, but face the pressure of the pressure-resistant multiplication of battery system, be very easy to due to protect IC it is pressure-resistant not
Foot causes its protection circuit to be damaged, and then endangers the safety of whole battery pack, simultaneously as needing in each battery pack
MOS systems are controlled using a set of protection switch, its cost pressure also can not be ignored.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of random connection in series-parallel being standardized and dropped
Low cost lithium battery group control system and there is its lithium battery group device.
The technical scheme in the invention for solving the technical problem is：A kind of control system of lithium battery group, bag
Include for detecting module by signal and accordingly being controlled lithium battery group from control module and receiving from control for lithium battery group state
Main control module, export two-way level signal, described master control mould after the state by detecting lithium battery from control module
Block receives above-mentioned two-way level signal and judged, output control signal changes the state of lithium battery group afterwards.
Further specifically, described two-way level signal is respectively charging level signal and discharge level signal, work as lithium
When battery pack is in normal operating conditions, charging level signal is high level, and discharge level signal is low level；In charging process
In, the voltage in lithium battery group switchs to low level higher than the charging threshold set, charging level signal from high level；Electric discharge or
During shelving, the voltage in lithium battery group switchs to high level less than the electric discharge threshold set, discharge level signal from low level.
Further specifically, described road level signal is respectively charging level signal and discharge level signal, when lithium electricity
When pond group is in normal operating conditions, charging level signal is high level, and discharge level signal is low level；It is described from control mould
Block detects to the temperature inside lithium battery group, when high temperature threshold of the temperature detected higher than setting or less than setting
During low temperature threshold, charging level signal switchs to low level from high level, while discharge level signal switchs to high level from low level.
Further specifically, described main control module detects to lithium battery group ambient temperature, and will detect
Ambient temperature signal with set environment temperature threshold compared with, when environment temperature higher than setting high ambient temperature threshold
When, main control module cuts off charge circuit and discharge loop；When low ambient temperature threshold of the environment temperature less than setting, master control mould
Block cuts off charge circuit.
Further specifically, described main control module and from being passed between control module by way of light-coupled isolation transmission
Defeated signal.
Further specifically, described main control module includes signal processing control unit and and signal processing control unit
Discharge current detection unit, short detection unit, over unit, additives for overcharge protection unit, the overcurrent protection of connection
Unit.
Further specifically, it is described from control module include being connected with lithium battery group signal processing unit and with signal
Manage internal temperature detection unit, the isolation transmission unit of unit connection.
Further specifically, described at least one from control module, described main control module is at least one.
A kind of lithium battery group device using above-mentioned control system, it is made up of some lithium battery groups, some described lithium electricity
Be attached between the group of pond by way of in series or in parallel or series-parallel connection, the number of described lithium battery group with from control module
Number it is consistent, the corresponding connection of each described lithium battery group one is from control module.
Further specifically, each described lithium battery group forms module simultaneously by several identical single lithium batteries are in parallel
Formed after being connected by several modules.
The beneficial effects of the utility model are：Sentencing for discharge and recharge and internal temperature is mainly carried out by two-way level signal
It is disconnected, criterion is simplified, improves efficiency；The control system of lithium battery has perfect defencive function, can be effectively protected
Lithium battery is reliable, the work of safety；And battery system realizes standardization, modularization, system module can go here and there in any combination
Connection, in parallel and series-parallel connection, have that cost is low, reliability is high, is easy to the advantages of scale and standardized production, there is very strong practicality
Property.
Brief description of the drawings
Fig. 1 is the theory diagram of the control system of the utility model lithium battery group；
Fig. 2 is the theory diagram of the utility model main control module；
Fig. 3 is the schematic diagram of the utility model main control module；
Fig. 4 is theory diagram of the utility model from control module；
Fig. 5 is circuit diagram of the utility model from control module.
Embodiment
The utility model is explained in detail below in conjunction with the accompanying drawings.
A kind of control system of lithium battery group as shown in Figure 1, including for detect lithium battery group state from control module with
And receive from control module by signal and the main control module that is accordingly controlled lithium battery group, it is described from module is controlled by detecting lithium
Two-way level signal is exported after the state of battery, described main control module receives above-mentioned two-way level signal and judged, afterwards
Output control signal changes the state of lithium battery group.Described two-way level signal is respectively charging level signal CO and electric discharge
Level signal DO, when lithium battery group is in normal operating conditions, charging level signal CO is high level, discharge level signal DO
For low level；Realized by the change of this two-way level to charging, discharging and the control of internal temperature, in charging process
In, the voltage in lithium battery group switchs to low level higher than the charging threshold set, charging level signal CO from high level；Discharging
Or during shelving, the voltage in lithium battery group switchs to height less than the electric discharge threshold set, discharge level signal DO from low level
Level；The temperature inside lithium battery group is detected by being arranged on the thermistor inside lithium battery group from control module, when
The temperature detected is higher than the high temperature threshold of setting or during the low temperature threshold less than setting, and charging level signal CO is from high level
Switch to low level, while discharge level signal DO switchs to high level from low level.
Main control module receives charging after these three signals for sending of control module to lithium battery group, electric discharge and interior
Portion's temperature anomaly carries out cutting-off controlling.And main control module and isolated transmission is carried out using optocoupler between control module.
Above-mentioned control system is used in lithium battery group device, and lithium battery group device passes through in parallel, string by some lithium battery groups
Connection or series-parallel connection（Series connection all exists with parallel）Composition, and one is respectively provided with from control module in no lithium battery group；It is some
A module is formed after identical single lithium battery is in parallel, lithium battery group is formed after several modules are together in series, it
Lithium battery group B1~B8 is carried out afterwards in parallel（As shown in Figure 1）；Battery apparatus after connection have two ends for B+ ends with
B- ends；It is respectively B+ ends and B- ends, P+ ends and P- ends that main control module, which has four ends,；The B+ ends of lithium battery group and main control module
B+ ends connect, and the B- ends of lithium battery group and the B- ends of main control module connect, and the P+ ends of main control module and P- ends are power output
Hold for connecting electrical equipment.
It is master control module principle block diagram and schematic diagram as shown in Figure 2 and Figure 3, main control module can be outer separately as one
If module, can also be placed into some lithium battery group in system, it includes main control processor（Model STM8S105）
And monocell overvoltage crowbar, monocell under-voltage protecting circuit, the overcurrent protection signal being connected with main control processor amplify
It is circuit, short-circuit protection circuit, electric discharge drive circuit, charging drive circuit, serial communication circuit, cell voltage circuit for detecting, low
Warm high-temperature protection circuit, charger circuit for detecting, DC-DC conversion circuits, the electric current being connected with overcurrent protection signal amplification circuit
Circuit for detecting, the discharge switch control circuit being connected with electric discharge drive circuit, the charge switch control being connected with charging drive circuit
Circuit processed, short-circuit protection circuit are connected with overcurrent protection signal amplification circuit, current-sensing circuit, discharge switch control circuit,
Charge switch controlling circuits are connected on the B- ends and P- ends of main control module, and the subplate connection feedback signal being connected with from control module is defeated
Enter end, subplate connects feedback signal input terminal by signal respectively by monocell overvoltage crowbar, monocell under-voltage protection electricity
Road and wire harness are delivered in main control processor；Current-sensing circuit detects that current signal passes to the amplification of overcurrent protection signal
Circuit, carry out being divided into two-way after signal amplification, be directly passed to main control processor all the way, another way passes through short-circuit protection circuit
Main control processor is passed to afterwards；The charging control signal of main control processor passes to charge switch control by the drive circuit that charges
Circuit processed；The discharge control signal of main control processor passes to discharge switch control circuit by the drive circuit that discharges；Charger
The signal of detecting is directly passed to main control processor by circuit for detecting, low temperature high-temperature protection circuit, cell voltage circuit for detecting；It is main
Control processor is connected by serial communication circuit with external equipment.
The theory diagram from control module is illustrated in figure 4, includes being connected in parallel on being handled from control in lithium battery group from control module
Device, it is connected to the charging optical coupling isolator U1 from control processor charging signals end, is connected to from control processor discharge signal end
Discharged optical coupling isolator U2, and charging optical coupling isolator U1 and the optical coupling isolator U2 that discharges output end are connected to from control signal terminal
On JP；It is connected to from control signal terminal JP by wire harness on subplate connection feedback signal input terminal.It is illustrated in figure 5 from control module
Circuit diagram, from control processor use model BM3451-BHDC_0 processor, wherein CO interfaces be charging level signal it is defeated
Go out end, DO interfaces are discharge level signal output part, and CO interfaces are respectively connected a model HCPL-073A-000E's with DO interfaces
Optocoupler carries out signal-isolated transmission, and connects feedback signal input terminal by being transmitted from control signal terminal JP to subplate；In Fig. 5
Electronic component is the peripheral cell of integrated circuit, and the circuit used in the present case also has other circuits of many similar functions can
To use.It is high electricity from the CO interfaces output of control processor in the case where the voltage and temperature of system are in normal operating conditions
Flat, that is, the light emitting diode inside the optical coupling isolator U1 that charges is off state, is height from control signal terminal JP 1 pin output
Level, DO interfaces are low level, that is, the light emitting diode inside the optical coupling isolator U2 that discharges is in the conduction state, from control signal end
Sub- JP 2 pin output is low level；From control signal terminal JP 3 pin ground connection.
Overcharge and the realization of overdischarge function：Main control module connects according to J1 to J8 on subplate connection feedback signal input terminal
What is received judges the working condition of battery from control module CO interface levels and DO interface levels, in the CO interfaces electricity of J1 to J8 inputs
When equalling all low level of all high level, DO interface levels, master control module judges are all working properly from control module, and beat
Charge circuit and discharge loop are opened, battery system is in normal operating conditions.When any one CO interface level in J1 to J8
In the case of low level, master control module judges battery pack is in overcharge condition, main control module charge closing loop, as whole CO
Interface level is converted to high level or after main control module has detected discharge current, and main control module is restored to normal work shape
State；When in J1 to J8 any one DO interface level from low transition be high level when, master control module judges battery pack is in
Over-discharge state simultaneously closes discharge loop, when all DO interface levels of J1 to J8 are all converted to high level or main control module
When having detected charging current, main control module will open discharge loop.
Temperature protection function is realized：Main control module itself detect environment temperature exceed given threshold or from control module
After sending previously described temperature anomaly, main control module will equally complete high temperature charge and discharge protecting and low temperature charge protection, in ring
Border temperature is less than in the case of given threshold, will perform the charging defencive function forbidding but can discharge, and details mode will be by
The main control processor of main control module realizes specific management work.
To sum up, the system has perfect lithium battery system defencive function, and it is reliable, safe can be effectively protected lithium battery
Work.Lithium battery group device can standardize, modularization, module can connection in series-parallel in any combination, have cost it is low, reliable
Property it is high, be easy to the advantages of scale and standardized production, there is very strong practicality.
It is emphasized that：It the above is only preferred embodiment of the present utility model, not the utility model appointed
What formal limitation, every any simple modification made according to the technical essence of the utility model to above example, etc.
With change and modification, in the range of still falling within technical solutions of the utility model.
Claims (9)
- A kind of 1. control system of lithium battery group, it is characterised in that including for detect lithium battery group state from control module with And receive from control module by signal and the main control module that is accordingly controlled lithium battery group, it is described from module is controlled by detecting lithium Two-way level signal is exported after the state of battery, described main control module receives above-mentioned two-way level signal and judged, afterwards Output control signal changes the state of lithium battery group；Described two-way level signal is respectively charging level signal and electric discharge electricity Ordinary mail number, when lithium battery group is in normal operating conditions, charging level signal is high level, and discharge level signal is low electricity It is flat；In charging process, higher than the charging threshold of setting, charging level signal switchs to low the voltage in lithium battery group from high level Level；During discharging or shelving, voltage in lithium battery group is less than the electric discharge threshold of setting, and discharge level signal is from low electricity Flat turn is high level.
- 2. the control system of lithium battery group according to claim 1, it is characterised in that described road level signal is respectively Charging level signal and discharge level signal, when lithium battery group is in normal operating conditions, charging level signal is high level, Discharge level signal is low level；Described detects from control module to the temperature inside lithium battery group, when the temperature detected When degree is higher than the high temperature threshold set or the low temperature threshold less than setting, charging level signal switchs to low level from high level, Discharge level signal switchs to high level from low level simultaneously.
- 3. the control system of lithium battery group according to claim 1, it is characterised in that described main control module is to lithium battery Group ambient temperature is detected, and by the ambient temperature signal detected compared with the environment temperature threshold set, When high ambient temperature threshold of the environment temperature higher than setting, main control module cut-out charge circuit and discharge loop；When environment temperature When degree is less than the low ambient temperature threshold set, main control module cut-out charge circuit.
- 4. the control system of lithium battery group according to claim 1, it is characterised in that described main control module with from control mould Between block signal is transmitted by way of light-coupled isolation transmission.
- 5. the control system of lithium battery group according to claim 1, it is characterised in that described main control module includes signal Processing and control element (PCE) and the discharge current detection unit being connected with signal processing control unit, short detection unit, overdischarge Protection location, additives for overcharge protection unit, overcurrent protection unit.
- 6. the control system of lithium battery group according to claim 1, it is characterised in that described to include and lithium from control module Battery pack connects signal processing unit and the internal temperature detection unit connected with signal processing unit, isolates transmission unit.
- 7. the control system of lithium battery group according to claim 1, it is characterised in that described from control module at least one Individual, described main control module is at least one.
- A kind of 8. lithium battery group device using any one control system in claim 1~7, by some lithium battery group structures Into, it is characterised in that it is attached between some described lithium battery groups by way of in series or in parallel or series-parallel connection, institute The number for the lithium battery group stated is consistent with the number from control module, and each described lithium battery group is corresponding to connect one from control mould Block.
- 9. lithium battery group device according to claim 8, it is characterised in that each described lithium battery group is by several phases Same single lithium battery is in parallel to be formed module and is formed after being connected by several modules.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720676451.6U CN207184077U (en) | 2017-06-12 | 2017-06-12 | A kind of control system of lithium battery group and there is its lithium battery group device |
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| CN201720676451.6U CN207184077U (en) | 2017-06-12 | 2017-06-12 | A kind of control system of lithium battery group and there is its lithium battery group device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069898A (en) * | 2017-06-12 | 2017-08-18 | 苏州英诺威新能源有限公司 | A kind of control system of lithium battery group and the lithium battery group device with it |
| CN109713750A (en) * | 2018-12-30 | 2019-05-03 | 深圳飞安瑞科技股份有限公司 | A kind of adjustable charge-discharge battery protection circuit of temperature |
-
2017
- 2017-06-12 CN CN201720676451.6U patent/CN207184077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069898A (en) * | 2017-06-12 | 2017-08-18 | 苏州英诺威新能源有限公司 | A kind of control system of lithium battery group and the lithium battery group device with it |
| CN109713750A (en) * | 2018-12-30 | 2019-05-03 | 深圳飞安瑞科技股份有限公司 | A kind of adjustable charge-discharge battery protection circuit of temperature |
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