CN108667103A - A kind of battery pack charging control circuit and its control method - Google Patents
A kind of battery pack charging control circuit and its control method Download PDFInfo
- Publication number
- CN108667103A CN108667103A CN201810587942.2A CN201810587942A CN108667103A CN 108667103 A CN108667103 A CN 108667103A CN 201810587942 A CN201810587942 A CN 201810587942A CN 108667103 A CN108667103 A CN 108667103A
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- Prior art keywords
- cooling
- battery
- unit
- branch pipe
- battery unit
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Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims description 102
- 230000005611 electricity Effects 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Classifications
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H02J7/0021—
-
- H02J7/0026—
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Power Engineering (AREA)
Abstract
Present invention is disclosed a kind of battery pack charging control circuits, battery pack is made of the battery unit being electrically connected to each other, the battery pack, which is equipped with, acquires each battery cell voltage, the battery management unit of electrical parameter, the battery pack is equipped with charging interface, the charging interface is equipped with voltage acquisition unit, the voltage acquisition unit exports charging voltage signal to controller, the battery management unit is communicated with controller, each battery unit is connected or disconnected by switch element and battery pack, the controller is through driving mechanism for switches output drive signal to each switch element.Present system is simple in structure, and monitoring is reliable, is capable of the charging process of effective protection battery pack.
Description
Technical field
The present invention relates to battery pack charge control fields.
Background technology
New energy technology is fast-developing, especially lithium battery the fields such as standby energy storage and electric vehicle extensive use,
Requirements at the higher level are proposed to crucial battery energy storage and battery management technique, need to promote the validity for charging to battery pack and equilibrium
Ability makes the energy storage characteristic of battery pack perform to most preferably.The especially use of high-tension battery group, needs effectively to solve high voltage to fill
The using security issues of electricity.The hardware cost for needing reduction high-voltage charging equipment simultaneously, enables new energy battery technology to obtain
Wider promotion and application.
In charging process, if the fluctuation of supply voltage may influence whether the service life of later stage battery pack, while also can
The quality of this charging is influenced, therefore particularly important for the monitoring of charging process, current common monitoring means are to use
Battery management unit, when still cannot be satisfied monitoring demand in special circumstances.
Invention content
The technical problem to be solved by the present invention is to realize a kind of can effectively to supervise the battery pack in charged state
The system of control and management.
To achieve the goals above, the technical solution adopted by the present invention is：A kind of battery pack charging control circuit, battery pack
It is made of the battery unit being electrically connected to each other, the battery pack is equipped with the battery for acquiring each battery cell voltage, electrical parameter
Administrative unit, the battery pack are equipped with charging interface, and the charging interface is equipped with voltage acquisition unit, the voltage acquisition unit
Charging voltage signal is exported to controller, the battery management unit is communicated with controller, and each battery unit is by opening
It closes element to connect or disconnect with battery pack, the controller is through driving mechanism for switches output drive signal to each switch element.
Each battery unit, which coils, water cooling pipeline, and each water cooling tube road is all provided with there are one cooling solenoid valve,
The both ends of each cooling line are linked on cooling branch pipe, two connect with each cooling line on the cooling branch pipe
It is all provided between communicating position there are one branch pipe solenoid valve, the both ends of the cooling branch pipe are linked on cooling supervisor, the cooling
It is all provided between two communicating positions being connect with each cooling branch pipe on supervisor there are one solenoid valve is responsible for, the cooling is responsible for two
End connection cooling water tank, and cooling supervisor wherein one end is equipped with cooling pump, controller outputs control signals to cooling controller, institute
State cooling controller through cooling control unit output drive signal to cooling solenoid valve, branch pipe solenoid valve, supervisor's solenoid valve and
Cooling pump.
Each battery unit is all provided with that there are one the temperature sensor for acquiring the battery cell temperature, the temperature sensing
Device output temperature signal is to controller.
The anode connection electrode input end of each battery unit, cathode connect negative input, adjacent cell
The negative input of electrode input end connection adjacent cell constitute concatenated battery pack, each battery unit is just
Connected by second switch element between pole input terminal and negative input, the electrode input end and battery unit anode or
First switching element is equipped between negative input and battery unit cathode.
Control method based on the battery pack charging control circuit, it is characterised in that：
When starting to charge up, the input voltage of charging interface is obtained；
It alarms if output voltage values are more than the safety value upper limit, if between the safety value upper limit and safety value lower limit,
Start to charge for all batteries unit, is that battery unit charges in batches if being less than safety value lower limit；
The first switching element of the battery unit of charged state is closed, second switch element disconnects, the electricity of non-charged state
The first switching element of pool unit disconnects, second switch element is closed.
If the input voltage of charging interface is less than safety value lower limit, compared according to the input voltage of current charging interface pre-
Deposit table, obtain the battery unit quantity that every batch of participates in charging, in charging process, if it is current participate in charging some or it is more
A battery unit electricity is full of, then disconnects the switch element for the battery unit for filling with electricity, and not yet fully charged electricity is added
Pool unit participates in charging, keeps the battery unit quantity for currently participating in charging identical as the numerical value for acquisition of tabling look-up, until all batteries
Unit is each filled with electricity.
If the Current Temperatures of some battery unit are more than temperature upper limit, start cooling pump.
After starting cooling pump, branch pipe valve and supervisor's valve maintain a normally open, and coolant valve keeps normally closed, it is current some or
Multiple temperature are more than the battery unit of temperature upper limit, then the cooling electromagnetism being opened on the cooling line of above-mentioned battery unit cooling
Valve, the branch pipe solenoid valve being closed between above-mentioned cooling line both ends, the supervisor's electricity being closed between above-mentioned cooling branch pipe both ends
Magnet valve.
After starting cooling pump, when the temperature of some or multiple battery units is by being more than at a temperature of temperature upper limit is reduced to
Limit, then the cooling solenoid valve being closed on the battery unit cooling line open the branch pipe solenoid valve between the cooling line both ends,
After all branch pipe solenoid valves are opened on cooling branch pipe, then supervisor's solenoid valve between the cooling branch pipe both ends is opened.
Present system is simple in structure, and monitoring is reliable, is capable of the charging process of effective protection battery pack.
Description of the drawings
The content of every width attached drawing expression in description of the invention is briefly described below：
Fig. 1 is system principle diagram；
Fig. 2 is switch element connection diagram；
Fig. 3 is cooling line connection diagram.
Specific implementation mode
Battery pack is made of the battery unit being electrically connected to each other, as shown in Fig. 2, the anode connection anode of each battery unit
Input terminal, cathode connect negative input, the cathode input of the electrode input end connection adjacent cell of adjacent cell
End constitutes concatenated battery pack, is connected by second switch element between the electrode input end and negative input of each battery unit
It connects, first switching element is equipped between electrode input end and battery unit anode or negative input and battery unit cathode.
The relationship that each battery unit is connected or disconnected with battery pack can be controlled by switch element by constituting one.
Battery pack is equipped with the battery management unit for acquiring each battery cell voltage, electrical parameter, and battery management unit will
The signal acquired is delivered to controller, and battery pack is equipped with charging interface, and charging interface is equipped with voltage acquisition unit, voltage acquisition
Unit exports charging voltage signal to controller, and controller is through driving mechanism for switches output drive signal to each switch element.
To control the relationship that battery unit and battery pack connect or disconnect.
When starting to charge up, the input voltage of charging interface is obtained；
It alarms if output voltage values are more than the safety value upper limit, if between the safety value upper limit and safety value lower limit,
Start to charge for all batteries unit, is that battery unit charges in batches if being less than safety value lower limit；
The first switching element of the battery unit of charged state is closed, second switch element disconnects, the electricity of non-charged state
The first switching element of pool unit disconnects, second switch element is closed.
For low voltage conditions, if the input voltage of charging interface is less than safety value lower limit, according to current charging interface
Input voltage comparison prestore table, the battery unit quantity that every batch of participates in charging is obtained, in charging process, if current participate in
Some or multiple battery unit electricity of charging are full of, then disconnect the switch element for the battery unit for filling with electricity, and add
Enter not yet fully charged battery unit and participate in charging, makes the numerical value phase for currently participating in the battery unit quantity and acquisition of tabling look-up of charging
Together, until all battery units are each filled with electricity, battery pack is allow to deal with low-voltage charge requirement.
Battery pack is equipped with cooling system, and water cooling may be used, as shown in figure 3, each battery unit, which coils, water cooling tube
Road, each water cooling tube road are all provided with there are one cooling solenoid valve, and the both ends of each cooling line are linked on cooling branch pipe, cooling
It is all provided between two communicating positions being connect with each cooling line on branch pipe there are one branch pipe solenoid valve, the both ends of cooling branch pipe
Be linked on cooling supervisor, be all provided between upper two communicating positions being connect with each cooling branch pipe of cooling supervisor there are one be responsible for
Solenoid valve, constitutes a water cooling plant that can selectively access cooling system, and cooling supervisor both ends connect cooling water tank, water tank
Interior water can be cooled down by wind-force, and cooling supervisor wherein one end is equipped with cooling pump, and controller outputs control signals to cooling control
Device processed, cooling controller through cooling control unit output drive signal to cooling solenoid valve, branch pipe solenoid valve, supervisor's solenoid valve with
And cooling pump, each battery unit are all provided with that there are one the temperature sensor for acquiring the battery cell temperature, temperature sensors
Output temperature signal is to controller, and such controller can be according to the temperature of current each battery unit, and it is cold that control enters progress
But battery unit achievees the purpose that the cooling of accurate and emphasis, helps to improve cooling effect.
Cooling control strategy is as follows：
If the Current Temperatures of some battery unit are more than temperature upper limit, start cooling pump.
After starting cooling pump, branch pipe valve and supervisor's valve maintain a normally open, and coolant valve keeps normally closed, it is current some or
Multiple temperature are more than the battery unit of temperature upper limit, then the cooling electromagnetism being opened on the cooling line of above-mentioned battery unit cooling
Valve, the branch pipe solenoid valve being closed between above-mentioned cooling line both ends, the supervisor's electricity being closed between above-mentioned cooling branch pipe both ends
Magnet valve.
After starting cooling pump, when the temperature of some or multiple battery units is by being more than at a temperature of temperature upper limit is reduced to
Limit, then the cooling solenoid valve being closed on the battery unit cooling line open the branch pipe solenoid valve between the cooling line both ends,
After all branch pipe solenoid valves are opened on cooling branch pipe, then supervisor's solenoid valve between the cooling branch pipe both ends is opened.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.
Claims (9)
1. a kind of battery pack charging control circuit, battery pack are made of the battery unit being electrically connected to each other, the battery pack is equipped with
The battery management unit of each battery cell voltage, electrical parameter is acquired, the battery pack is equipped with charging interface, and feature exists
In：The charging interface is equipped with voltage acquisition unit, and the voltage acquisition unit output charging voltage signal is described to controller
Battery management unit is communicated with controller, and each battery unit is connected or disconnected by switch element and battery pack, described
Controller is through driving mechanism for switches output drive signal to each switch element.
2. battery pack charging control circuit according to claim 1, it is characterised in that：Each battery unit, which coils, water
Cold pipeline, each water cooling tube road are all provided with there are one cooling solenoid valve, and the both ends of each cooling line are linked into cold
But it on branch pipe, is all provided between two communicating positions being connect with each cooling line on the cooling branch pipe there are one branch pipe electromagnetism
The both ends of valve, the cooling branch pipe are linked on cooling supervisor, upper two connect with each cooling branch pipe of the cooling supervisor
It is all provided between communicating position there are one solenoid valve is responsible for, the cooling supervisor both ends connect cooling water tank, and cooling supervisor is wherein
One end is equipped with cooling pump, and controller outputs control signals to cooling controller, and the cooling controller is defeated through cooling control unit
Go out drive signal to cooling solenoid valve, branch pipe solenoid valve, supervisor's solenoid valve and cooling pump.
3. battery pack charging control circuit according to claim 2, it is characterised in that：Each battery unit is equipped with
One temperature sensor for acquiring the battery cell temperature, the temperature sensor output temperature signal to controller.
4. battery pack charging control circuit according to claim 1,2 or 3, it is characterised in that：Each battery unit
Anode connection electrode input end, cathode connects negative input, and the electrode input end of adjacent cell connects adjacent cell
The negative input of unit constitutes concatenated battery pack, between the electrode input end and negative input of each battery unit
It is connected by second switch element, the electrode input end and battery unit anode or negative input and battery unit cathode
Between be equipped with first switching element.
5. the control method based on any battery pack charging control circuit in claim 1-4, it is characterised in that：
When starting to charge up, the input voltage of charging interface is obtained；
It alarms if output voltage values are more than the safety value upper limit, if between the safety value upper limit and safety value lower limit, starts
It charges for all batteries unit, is that battery unit charges in batches if being less than safety value lower limit；
The first switching element of the battery unit of charged state is closed, second switch element disconnects, the battery list of non-charged state
The first switching element of member disconnects, second switch element is closed.
6. control method according to claim 5, it is characterised in that：If the input voltage of charging interface is less than under safety value
Limit then compares the table that prestores according to the input voltage of current charging interface, obtains the battery unit quantity that every batch of participates in charging,
In charging process, if some current for participating in charging or multiple battery unit electricity are full of, the electricity for filling with electricity is disconnected
The switch element of pool unit, and not yet fully charged battery unit is added and participates in charging, make the battery unit for currently participating in charging
Quantity is identical as the numerical value for acquisition of tabling look-up, until all battery units are each filled with electricity.
7. control method according to claim 5 or 6, it is characterised in that：If the Current Temperatures of some battery unit are more than
Temperature upper limit then starts cooling pump.
8. control method according to claim 7, it is characterised in that：After starting cooling pump, branch pipe valve and main pipe valve
Door maintains a normally open, and coolant valve keeps normally closed, and currently some or multiple temperature are then opened for more than the battery unit of temperature upper limit
Cooling solenoid valve on the cooling line of above-mentioned battery unit cooling, the branch pipe electromagnetism being closed between above-mentioned cooling line both ends
Valve, the supervisor's solenoid valve being closed between above-mentioned cooling branch pipe both ends.
9. control method according to claim 8, it is characterised in that：After starting cooling pump, when some or multiple batteries
The temperature of unit is by being more than that temperature upper limit is reduced to lowest temperature, then the cooling electromagnetism being closed on the battery unit cooling line
Valve opens the branch pipe solenoid valve between the cooling line both ends, after all branch pipe solenoid valves are opened on cooling branch pipe, then beats
Open supervisor's solenoid valve between the cooling branch pipe both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587942.2A CN108667103A (en) | 2018-06-08 | 2018-06-08 | A kind of battery pack charging control circuit and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587942.2A CN108667103A (en) | 2018-06-08 | 2018-06-08 | A kind of battery pack charging control circuit and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108667103A true CN108667103A (en) | 2018-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587942.2A Pending CN108667103A (en) | 2018-06-08 | 2018-06-08 | A kind of battery pack charging control circuit and its control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299475A (en) * | 2008-06-03 | 2008-11-05 | 范汉强 | Cooling method for rapidly charging accumulator and apparatus thereof |
| CN104253469A (en) * | 2014-09-24 | 2014-12-31 | 于志章 | Secondary battery pack charging and discharging management system |
| CN206505997U (en) * | 2017-02-27 | 2017-09-19 | 安徽江淮汽车集团股份有限公司 | Battery bag temperature control system |
| CN208479215U (en) * | 2018-06-08 | 2019-02-05 | 李勇 | A kind of battery pack charging control circuit |
-
2018
- 2018-06-08 CN CN201810587942.2A patent/CN108667103A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299475A (en) * | 2008-06-03 | 2008-11-05 | 范汉强 | Cooling method for rapidly charging accumulator and apparatus thereof |
| CN104253469A (en) * | 2014-09-24 | 2014-12-31 | 于志章 | Secondary battery pack charging and discharging management system |
| CN206505997U (en) * | 2017-02-27 | 2017-09-19 | 安徽江淮汽车集团股份有限公司 | Battery bag temperature control system |
| CN208479215U (en) * | 2018-06-08 | 2019-02-05 | 李勇 | A kind of battery pack charging control circuit |
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