CN107204654A - Battery pack control system and charging equipment - Google Patents
Battery pack control system and charging equipment Download PDFInfo
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- CN107204654A CN107204654A CN201710628885.3A CN201710628885A CN107204654A CN 107204654 A CN107204654 A CN 107204654A CN 201710628885 A CN201710628885 A CN 201710628885A CN 107204654 A CN107204654 A CN 107204654A
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- battery bag
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- 238000007600 charging Methods 0.000 title claims abstract description 79
- 239000011159 matrix material Substances 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000005611 electricity Effects 0.000 claims description 49
- 102000006479 Heterogeneous-Nuclear Ribonucleoproteins Human genes 0.000 claims description 10
- 108010019372 Heterogeneous-Nuclear Ribonucleoproteins Proteins 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract 8
- 238000007599 discharging Methods 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004064 recycling Methods 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- 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)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a battery pack control system and charging equipment, and relates to the technical field of battery management, wherein the system comprises: a plurality of bidirectional DC/DC conversion units connected in one-to-one correspondence with the battery packs; a plurality of bidirectional AC/DC conversion units connected to the bidirectional DC/DC conversion unit through the switch matrix unit; the control unit is connected with the battery pack, the bidirectional DC/DC conversion unit and the switch matrix unit through a CAN bus; the control unit controls the switch matrix unit to be closed and the bidirectional DC/DC conversion unit to be electrified according to the information of the battery pack, charges/discharges the battery pack and adjusts the output power and the output voltage of the bidirectional DC/DC conversion unit; and the bidirectional DC/DC conversion unit is also used for controlling the switch matrix unit to be disconnected and the bidirectional DC/DC conversion unit to be powered down according to the information of the battery pack so as to stop charging/discharging the battery pack. The scheme of the invention solves the problems of insufficient discharge power and incomplete discharge of electric quantity of the battery pack, and realizes the functions of charging and discharging simultaneously.
Description
Technical field
The invention belongs to the technical field of battery management, more particularly, to a kind of battery bag control system and charging equipment.
Background technology
With the popularization of electric automobile, the effective recycling of electrokinetic cell also wants face as current Development of Electric Vehicles
To the problem of.Currently for the secondary utilization of battery bag, mainly by being disassembled to the electrokinetic cell bag, then group again
Utilized after dress, but this scheme cost is higher, while having the problem of discharge power is not enough.Further, since each battery
Producer, battery core specification are different, can make to have differences during electrokinetic cell package-restructuring, and the secondary echelon to battery bag, which is utilized, brings very big
Inconvenience.
The content of the invention
It is an object of the invention to provide a kind of battery bag control system and charging equipment, so as to solve electric in the prior art
Chi Bao disassembles cost height, and during secondary utilization the problem of discharge power deficiency.
To achieve these goals, the embodiments of the invention provide a kind of battery bag control system, including：
The multiple two-way DC/DC converter units connected one to one with battery bag；
The multiple two-way AC/DC converter units being connected by switch matrix unit with the two-way DC/DC converter units；
Connected respectively with the battery bag, the two-way DC/DC converter units and the switch matrix unit by CAN
The control unit connect；
Wherein, described control unit is used for according to battery package informatin, controls the switch matrix unit closure and described double
It is electric on to DC/DC converter units, it is the battery bag charge/discharge, and adjust the power output of the two-way DC/DC converter units
And output voltage；Described control unit is additionally operable to, according to the battery package informatin, control the switch matrix unit to disconnect and institute
Electricity under two-way DC/DC converter units is stated, the battery bag is stopped charge/discharge.
Wherein, the two-way AC/DC converter units include：
First two-way AC/DC converter units, are connected with AC power, for the alternating voltage of the AC power to be changed
For DC voltage, output to the two-way DC/DC converter units；
Second two-way AC/DC converter units, be connecteds with load, for by the two-way DC/DC converter units export it is straight
Stream voltage conversion is alternating voltage, output to the load.
Wherein, the switch matrix unit includes：First connected one to one with the two-way DC/DC converter units is filled
Electric end, the first discharge end connected one to one with the two-way DC/DC converter units is converted with the described first two-way AC/DC
Second charging end of unit connection, and the second discharge end being connected with the described second two-way AC/DC converter units；
Wherein, charging paths, the charging branch are provided between second charging end and each first charging end
Road is used for the two-way DC/DC converter units connection being connected by the described first two-way AC/DC converter units and with the charging paths
Or disconnect；
Discharge paths are provided between second discharge end and each first discharge end, the discharge paths are used for
The connection of two-way DC/DC converter units or disconnection being connected by the described second two-way AC/DC converter units and with the discharge paths.
Wherein, the charging paths include：Be connected to first charging end positive pole and second charging end just
Charge switch between pole, is connected to the charger between the negative pole of the negative pole of first charging end and second charging end
Dangerous silk.
Wherein, the discharge paths include：It is connected to the positive pole and second discharge end of first discharge end just
Discharge switch between pole, the electric discharge being connected between the negative pole of the negative pole of first discharge end and second discharge end is protected
Dangerous silk.
Wherein, the charge switch and the discharge switch are relay.
Wherein, the battery bag information includes：The cell voltage value of battery bag, the temperature of battery bag, and, battery bag
Dump energy.
Wherein, described control unit is used to be less than the first default dump energy in the current residual electricity for detecting battery bag
When, control electricity on the two-way DC/DC converter units that be connecteds with the battery bag, and control and the two-way DC/DC change units
The charge switch closure of connection, is the battery bag charging.
Wherein, described control unit is additionally operable to, during the battery bag charges, and detects the battery core of the battery bag
Voltage；
Wherein, when the battery core voltage is less than the first preset voltage value, the two-way DC/ being connected with the battery bag is adjusted
DC converter units are exported to the voltage of the battery bag, and it is the second default electricity to make input to the voltage of each battery core of the battery bag
Pressure value, and the power output of the two-way DC/DC converter units is adjusted, input to the electric current of each battery core is preset for first
Current value；
When the magnitude of voltage of the battery core is more than or equal to first preset voltage value, adjusts the two-way DC/DC and become
Change unit to export to the voltage of the battery bag, it is the 3rd preset voltage value to make input to the voltage of each battery core, and is adjusted
The power output of the two-way DC/DC converter units, it is the second pre-set current value to make input to the electric current of each battery core.
Wherein, described control unit is additionally operable to, during the battery bag charges, when detecting the battery bag
When current residual electricity is the second default dump energy, electricity under the two-way DC/DC converter units that control is connected with the battery bag,
And control the charge switch being connected with the two-way DC/DC converter units to disconnect, stop charging for the battery bag.
Wherein, described control unit is used for, and is the 3rd default dump energy detecting the current residual electricity of battery bag
When, control electricity on the two-way DC/DC converter units that be connecteds with the battery bag, and control and the two-way DC/DC converter units
The discharge switch closure of connection, is the battery bag electric discharge.
Wherein, described control unit is additionally operable to, during the battery bag is discharged, and detects the current of the battery bag
Dump energy；
Wherein, when the current residual electricity is less than the 4th default dump energy, what adjustment was connected with the battery bag
The power output of two-way DC/DC converter units is the first performance number；
When the current residual electricity is more than or equal to the described 4th default dump energy, the two-way DC/DC is adjusted
The power output of converter unit is the second performance number；
When the current residual electricity is less than the 5th default dump energy, control under the two-way DC/DC converter units
Electricity, and control the discharge switch being connected with the two-way DC/DC converter units to disconnect, the battery bag is stopped electric discharge.
Wherein, described control unit is additionally operable to, during battery bag charge/discharge, when the temperature for detecting the battery bag
Degree more than the first preset temperature or less than the second preset temperature, or the currently detected battery bag battery core voltage with before
When the difference of the secondary voltage detected is more than the first preset difference value, control the two-way DC/DC conversion being connected with the battery bag single
The lower electricity of member, and control the charge/discharge being connected with the two-way DC/DC converter units to switch off.
The embodiment of the present invention also provides a kind of charging equipment, wherein, the charging equipment includes battery bag as described above
Control system.
The above-mentioned technical proposal of the present invention at least has the advantages that：
The embodiment of the present invention is realized by the way that multiple battery bags are connected one to one with multiple two-way DC/DC converter units
The function of being discharged in charging；By being set between the two-way DC/DC converter units and the two-way AC/DC converter units
Switch matrix is put, realizes and charge/discharge is individually carried out to battery bag each described；During the battery bag charge/discharge,
In discharge process, closed by multiple discharge switches to the switch matrix, realize that multiple battery bags are discharged simultaneously, so that
Increase electric discharge power output；When an exception occurs, can be by being switched off to the switch matrix, and make described two-way
It is electric under DC/DC converter units, stop to the battery bag charge/discharge.
Brief description of the drawings
Fig. 1 is the schematic diagram of the battery bag control system of the embodiment of the present invention；
Fig. 2 is the another schematic diagram of the battery bag control system of the embodiment of the present invention.
Description of reference numerals：
The two-way AC/DC converter units of 1A- first, the two-way AC/DC converter units of 1B- second, 2- switch matrix, S1- electric discharges
Switch, S2- discharge switches, S3- discharge switches, S11- charge switch, S21- charge switch, S31- charge switch, F1- electric discharges are protected
Dangerous silk, F2- electric discharge fuses, F3- electric discharge fuses, F11- charging fuses, F21- charging fuses, F31- charging insurances
Silk, the two-way DC/DC converter units of 3A-, the two-way DC/DC converter units of 3B-, the two-way DC/DC converter units of 3C-, 4A- battery bags,
4B- battery bags, 4C- battery bags, 5- control units, 6-CAN buses.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
As shown in figure 1, one embodiment of the invention provides a kind of battery bag control system, including：
The multiple two-way DC/DC converter units connected one to one with battery bag；
The multiple two-way AC/DC converter units being connected by switch matrix unit 2 with the two-way DC/DC converter units；
By CAN 6 respectively with the battery bag, the two-way DC/DC converter units and the switch matrix unit 2
The control unit of connection；
Wherein, described control unit 5 is used for according to battery package informatin, controls the closure of switch matrix unit 2 and described
It is electric on two-way DC/DC converter units, it is the battery bag charge/discharge, and adjust the output work of the two-way DC/DC converter units
Rate and output voltage；Described control unit 5 is additionally operable to, according to the battery package informatin, control the switch matrix unit 2 to disconnect
With electricity under the two-way DC/DC converter units, the battery bag is set to stop charge/discharge.
Specifically, the battery bag control system includes multiple battery bags and multiple two-way DC/DC conversion are single
Member, each battery bag is connected with a two-way DC/DC converter unit, as shown in figure 1, the battery bag 4A with it is two-way
DC/DC converter units 3A connections, the two-way DC/DC converter units 3A is used to be the battery bag 4A charge or discharge；It is described
Battery bag 4B is connected with two-way DC/DC converter units 3B, and the two-way DC/DC converter units 3B is used to fill for the battery bag 4B
Electricity or electric discharge；The battery bag 4C is connected with two-way DC/DC converter units 3C, and the two-way DC/DC converter units 3C is for being
The battery bag 4C charge or discharge.
It should be noted that Fig. 1 includes three battery bags, but in a particular application, however it is not limited to described in three
Battery bag, can be any battery bag, but need each battery bag to be converted with a two-way DC/DC
Unit is connected.Wherein, the battery bag is more, and the battery bag control system is in electric discharge, and the power of output is bigger.
As shown in Fig. 2 the two-way AC/DC converter units include：
First two-way AC/DC converter units 1A, the first two-way AC/DC converter units 1A is connected with AC power, is used
In the alternating voltage of the AC power is converted into DC voltage, exported by the switch matrix unit 2 to described two-way
DC/DC converter units；
Second two-way AC/DC converter units 1B, the second two-way AC/DC converter units 1B are connected with load, for inciting somebody to action
The DC voltage of the two-way DC/DC converter units output is converted to alternating voltage, output to the load.
The switch matrix unit includes：The first charging end connected one to one with the two-way DC/DC converter units,
The first discharge end connected one to one with the two-way DC/DC converter units, connects with the described first two-way AC/DC converter units
The second charging end connect, and the second discharge end being connected with the described second two-way AC/DC converter units.
Specifically, each two-way DC/DC converter units connect with first charging end and first discharge end
Connect.Wherein, first charging end is used to input the first DC voltage for the two-way DC/DC converter units, and described first is straight
Voltage is flowed after the two-way DC/DC converter units carry out voltage conversion, is to be connected with the two-way DC/DC converter units
Battery bag charges, now, and the two-way DC/DC converter units are used to DC high-voltage being converted to DC low-voltage electricity；Described
One discharge end is used for the second direct voltage output to the described second two-way AC/DC of the two-way DC/DC converter units output
Converter unit, voltage is provided for the load, and now, the two-way DC/DC converter units are used for export the battery bag
DC low-voltage electricity is converted to DC high-voltage.
Wherein, charging paths, the charging branch are provided between second charging end and each first charging end
Road is used for the two-way DC/DC converter units connection being connected by the described first two-way AC/DC converter units and with the charging paths
Or disconnect.The charging paths include：Between the positive pole for being connected to the positive pole of first charging end and second charging end
Charge switch, be connected to the charging fuse between the negative pole of the negative pole of first charging end and second charging end.
Discharge paths are provided between second discharge end and each first discharge end, the discharge paths are used for
The connection of two-way DC/DC converter units or disconnection being connected by the described second two-way AC/DC converter units and with the discharge paths.
The discharge paths include：The electric discharge being connected between the positive pole of the positive pole of first discharge end and second discharge end is opened
Close, be connected to the electric discharge fuse between the negative pole of the negative pole of first discharge end and second discharge end.
Specifically, as shown in Fig. 2 the two-way DC/DC converter units 3A by the positive pole of first charging end with filling
Electric switch S11 connections, are connected by the negative pole of first charging end with charging fuse F11；The charge switch S11's is another
One end is connected by the positive pole of second charging end with the described first two-way AC/DC converter units, the charging fuse F11
The other end be connected by the negative pole of second charging end with the described first two-way AC/DC converter units.The two-way DC/DC
Converter unit 3A is connected by the positive pole of first discharge end with discharge switch S1, by the negative pole of first discharge end with
Electric discharge fuse F1 connections；The other end of the discharge switch S1 is two-way by the positive pole of second discharge end and described second
AC/DC converter units are connected, and the other end of the electric discharge fuse F11 puts single-ended negative pole and described second by described second
Two-way AC/DC converter units connection.
Likewise, the two-way DC/DC converter units 3B passes through charge switch S21 and charging fuse F21 and institute respectively
State the first two-way AC/DC converter units connection；Pass through discharge switch S2 and electric discharge fuse F2 and the described second two-way AC/ respectively
DC converter units are connected.The two-way DC/DC converter units 3C passes through charge switch S31 and charging fuse F31 and institute respectively
State the first two-way AC/DC converter units connection；Pass through discharge switch S3 and electric discharge fuse F3 and the described second two-way AC/ respectively
DC converter units are connected.
Wherein, the charge switch and the discharge switch are to control closure or the relay disconnected by voltage, or
Person is other controllable switches, and the switch is closed or disconnected according to the signal received.
The operation principle of the battery bag control system is：
Described control unit 5 is communicated by the CAN 6 with the battery management system of each battery bag, and collection is each in real time
The battery package informatin of battery bag, wherein, the battery bag information includes：The cell voltage value of battery bag, the temperature of battery bag, with
And, the dump energy of battery bag；Described control unit 5 is according to the battery package informatin collected, respectively to each battery
Bag is judged, determines the charge or discharge of each battery bag.
On the one hand, remained when the current residual electricity that described control unit 5 collects the battery bag 4A is default less than first
During remaining electricity, described control unit 5 is communicated by the CAN 6 with the two-way DC/DC converter units 3A, so as to control
It is electric on the two-way DC/DC converter units 3A, and the charge switch S31 that control is connected with the two-way DC/DC converter units 3A
Closure so that the AC power, the first two-way AC/DC converter units 1A, the two-way DC/DC converter units 3A with
It is the battery bag 4A chargings and the battery bag 4A constitutes closed-loop path.
During for battery bag 4A chargings, described control unit 5 gathers the battery of the battery bag 4A in real time
Package informatin, when the battery core voltage for detecting the battery bag 4A is less than the first preset voltage value, adjusts the two-way DC/DC and becomes
Change unit 3A to export to the voltage of the battery bag 4A, input to the voltage of each battery core of the battery bag 4A is preset for second
Magnitude of voltage, and the power output of the two-way DC/DC converter units 3A is adjusted, it is first to make input to the electric current of each battery core
Pre-set current value.
During for battery bag 4A chargings, when the battery core voltage is more than or equal to first predeterminated voltage
During value, adjust the two-way DC/DC converter units 3A and export to the voltage of the battery bag 4A, make input to each battery core
Voltage is the 3rd preset voltage value, and adjusts the power output of the two-way DC/DC converter units 3A, makes input to each electricity
The electric current of core is the second pre-set current value.
During for battery bag 4A chargings, when the current residual electricity for detecting the battery bag 4A is second
During default dump energy, described control unit 5 is by the CAN 6 and the two-way DC/DC converter units 3A and described opens
Matrix unit 2 is closed to communicate, so that electric under the two-way DC/DC converter units 3A, the control charge switch S11 disconnections are controlled,
Stop charging for the battery bag.Wherein, the described second default dump energy is when the battery bag 4A is in full power state
Electricity.
Wherein, during for battery bag 4A chargings, the voltage of the two-way DC/DC converter units 3A outputs
Scope is 260~400V, wherein, what the output voltage of the two-way DC/DC converter units 3A was exported according to described control unit 5
Control signal is adjusted, wherein, the control signal is battery core of the described control unit 5 according to the battery bag 4A of collection
What magnitude of voltage was determined, the changing rule of the voltage of the two-way DC/DC converter units 3A outputs is, when the battery core voltage
During less than the first preset voltage value, charged by low-voltage, high current；When the battery core voltage is pre- more than or equal to first
If during magnitude of voltage, being charged by high voltage, low current；I.e.：Second preset voltage value is less than the described 3rd default electricity
Pressure value, first pre-set current value is more than second pre-set current value.
It should be noted that when described control unit 5 detects the current surplus of the battery bag 4A and battery bag 4B
When remaining electricity is respectively less than the first default dump energy, described control unit 5 can be controlled while being the battery bag 4A and described
Battery bag 4B charges, and both charging processes are independent of each other.Therefore, the power output of the described first two-way AC/DC converter units
The requirement that all battery bags charge simultaneously need to be met, or, multiple described first pairs are set in the battery bag control system
Charged to AC/DC converter units for the battery bag.
On the other hand, when the current residual electricity that described control unit 5 collects the battery bag 4C is the 3rd default surplus
During remaining electricity, described control unit 5 passes through the CAN 6 and two-way the DC/DC converter units 3C and the switch matrix
Unit communication, controls electricity on the two-way DC/DC converter units 3C, and controls the discharge switch S3 to close, so that described
Load, the second two-way AC/DC converter units 1B, the two-way DC/DC converter units 3C and the battery bag 4C are constituted
Closed-loop path, is the battery bag 4C electric discharges.
During for battery bag 4C electric discharges, described control unit 5 passes through the CAN 6 and the battery
Bag 4C is communicated, and the battery package informatin of the battery bag 4C is gathered in real time, when the current residual electricity of the battery bag 4C is small
When the 4th default dump energy, the power output for adjusting the two-way DC/DC converter units 3C is the first performance number；When described
When current residual electricity is more than or equal to the described 4th default dump energy, the output of the two-way DC/DC converter units is adjusted
Power is the second performance number.
During for battery bag 4C electric discharges, when the current residual electricity is less than the 5th default dump energy
When, described control unit 5 passes through the CAN 6 and the two-way DC/DC converter units 3C and the switch matrix unit 2
Communication, controls electricity under the two-way DC/DC converter units 3C, and controls the discharge switch S3 to disconnect, and stops the battery bag
Only discharge, wherein, the described 5th default dump energy is the higher limit of the battery bag 4C power shortages.
Wherein, during the battery bag 4C discharges, the output voltage of the two-way DC/DC converter units 3C is one
Load voltage value, usually, the load voltage value are 400V；And first performance number is less than second performance number.
It should be noted that when the current residual electricity that described control unit 5 detects multiple battery bags is institute
When stating the 3rd default dump energy, described control unit 5 can control multiple battery bag electric discharges simultaneously, so as to improve described
The power output of battery bag control system, solves the secondary battery bag electricity utilized and can not release completely to ask with underpower
Topic.
Wherein, during battery bag charge/discharge, when the temperature that described control unit 5 detects the battery bag is more than
First preset temperature or less than the second preset temperature, or, the battery core voltage of the currently detected battery bag and previous inspection
When the difference of the battery core voltage measured is more than the first preset difference value, determine that the battery bag is present abnormal, it is impossible to proceed to fill/
Electric discharge, therefore, the two-way DC/DC converter units that the control of described control unit 5 battery bag abnormal with current state is connected
Lower electricity, and control the charge/discharge being connected with the two-way DC/DC converter units to switch off, so as to terminate to abnormal battery
Bag charge/discharge, it is to avoid produce danger, caused damage to equipment and personnel.
It should be noted that above-described embodiment is the battery bag control system carries out discharge charge to the battery bag alone
The process of electricity；When there is operating personnel to input control instruction to described control unit 5, described control unit 5 is according to the control
Instruction performs operation, realizes the discharge and recharge to the battery bag.
The above embodiment of the present invention, realize the secondary utilization to the whole bag of battery bag, it is to avoid the dismounting to battery bag
With secondary assembling, cost is reduced；Control by described control unit 5 individually to multiple battery bags, realizes side and fills
The function of electric side electric discharge, simultaneously, it is to avoid when one of battery bag is abnormal, the problem of remaining battery bag can not be used normally；It is logical
Described control unit 5 is crossed while controlling multiple battery bags to discharge, discharge power is improved；In discharge process, according to the electricity
Chi Bao battery core voltage, adjust the power output of the upper phase DC/DC converter units, it is to avoid due to each battery core voltage difference mistake
Greatly, the problem of causing the electricity of the battery bag and can not release completely.
The embodiment of the present invention additionally provides a kind of charging equipment, and the charging equipment is controlled including battery bag as described above
System.The charging equipment can provide voltage for high power load, and the charging equipment can also be provided for the load
While voltage, charged by AC power for the charging equipment.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (14)
1. a kind of battery bag control system, it is characterised in that the control system includes：
The multiple two-way DC/DC converter units connected one to one with battery bag；
The multiple two-way AC/DC converter units being connected by switch matrix unit with the two-way DC/DC converter units；
It is connected respectively with the battery bag, the two-way DC/DC converter units and the switch matrix unit by CAN
Control unit；
Wherein, described control unit is used for according to battery package informatin, controls the switch matrix unit closure and the two-way DC/
It is electric on DC converter units, it is the battery bag charge/discharge, and adjust the power outputs of the two-way DC/DC converter units and defeated
Go out voltage；Described control unit is additionally operable to according to the battery package informatin, controls the switch matrix unit to disconnect and described double
It is electric under to DC/DC converter units, the battery bag is stopped charge/discharge.
2. control system according to claim 1, it is characterised in that the two-way AC/DC converter units include：
First two-way AC/DC converter units, are connected with AC power, for the alternating voltage of the AC power to be converted to directly
Flow voltage, output to the two-way DC/DC converter units；
Second two-way AC/DC converter units, are connected with load, for the direct current for exporting the two-way DC/DC converter units
Pressure is converted to alternating voltage, output to the load.
3. control system according to claim 2, it is characterised in that the switch matrix unit includes：With it is described two-way
The first charging end that DC/DC converter units connect one to one, connected one to one with the two-way DC/DC converter units
One discharge end, the second charging end being connected with the described first two-way AC/DC converter units, and with the described second two-way AC/DC
Second discharge end of converter unit connection；Wherein,
Charging paths are provided between second charging end and each first charging end, the charging paths are used for institute
The connection of two-way DC/DC converter units or disconnection stated the first two-way AC/DC converter units and be connected with the charging paths；
Discharge paths are provided between second discharge end and each first discharge end, the discharge paths are used for institute
The connection of two-way DC/DC converter units or disconnection stated the second two-way AC/DC converter units and be connected with the discharge paths.
4. control system according to claim 3, it is characterised in that the charging paths include：It is connected to described first
Charge switch between the positive pole of charging end and the positive pole of second charging end, be connected to first charging end negative pole and
Charging fuse between the negative pole of second charging end.
5. control system according to claim 4, it is characterised in that the discharge paths include：Described first is connected to put
Discharge switch between the positive pole of the positive pole at electric end and second discharge end, is connected to negative pole and the institute of first discharge end
State the electric discharge fuse between the negative pole of the second discharge end.
6. system according to claim 5, it is characterised in that the charge switch and the discharge switch are relay
Device.
7. system according to claim 5, it is characterised in that the battery bag information includes：The monomer voltage of battery bag
Value, the temperature of battery bag, and, the dump energy of battery bag.
8. control system according to claim 7, it is characterised in that described control unit is used to detect battery bag
When current residual electricity is less than the first default dump energy, on the two-way DC/DC converter units that control is connected with the battery bag
Electricity, and control the charge switch being connected with the two-way DC/DC change units to close, it is the battery bag charging.
9. control system according to claim 8, it is characterised in that described control unit is additionally operable to, in the battery bag
During charging, the battery core voltage of the battery bag is detected；Wherein,
When the battery core voltage is less than the first preset voltage value, the two-way DC/DC conversion being connected with the battery bag is adjusted single
Member output is to the voltage of the battery bag, and it is the second preset voltage value to make input to the voltage of each battery core of the battery bag, and
The power output of the two-way DC/DC converter units is adjusted, it is the first pre-set current value to make input to the electric current of each battery core；
When the magnitude of voltage of the battery core is more than or equal to first preset voltage value, the two-way DC/DC conversion is adjusted single
Member output is to the voltage of the battery bag, and it is the 3rd preset voltage value to make input to the voltage of each battery core, and adjusts described
The power output of two-way DC/DC converter units, it is the second pre-set current value to make input to the electric current of each battery core.
10. control system according to claim 8, it is characterised in that described control unit is additionally operable to, in the battery bag
During charging, when detecting the current residual electricity of the battery bag for the second default dump energy, control with it is described
Electricity under the two-way DC/DC converter units of battery bag connection, and the charge switch that control is connected with the two-way DC/DC converter units
Disconnect, stop charging for the battery bag.
11. control system according to claim 7, it is characterised in that described control unit is used for, is detecting battery bag
Current residual electricity for the 3rd default dump energy when, control on the two-way DC/DC converter units that are connected with the battery bag
Electricity, and control the discharge switch being connected with the two-way DC/DC converter units to close, it is the battery bag electric discharge.
12. control system according to claim 11, it is characterised in that described control unit is additionally operable to, in the battery
During bag electric discharge, the current residual electricity of the battery bag is detected；Wherein,
When the current residual electricity is less than the 4th default dump energy, the two-way DC/DC being connected with the battery bag is adjusted
The power output of converter unit is the first performance number；
When the current residual electricity is more than or equal to the described 4th default dump energy, the two-way DC/DC conversion is adjusted
The power output of unit is the second performance number；
When the current residual electricity is less than the 5th default dump energy, electricity under the two-way DC/DC converter units is controlled, and
Control the discharge switch being connected with the two-way DC/DC converter units to disconnect, the battery bag is stopped electric discharge.
13. control system according to claim 7, it is characterised in that described control unit is additionally operable to, fill in battery bag/
In discharge process, when the temperature for detecting the battery bag is more than the first preset temperature or less than the second preset temperature, or work as
Before the difference of the battery core voltage of the battery bag and the previous voltage detected that detects when being more than the first preset difference value, control
It is electric under the two-way DC/DC converter units being connected with the battery bag, and control and filling that the two-way DC/DC converter units are connected
Electricity/discharge switch disconnects.
14. a kind of charging equipment, it is characterised in that including the battery bag control system as described in claim any one of 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710628885.3A CN107204654A (en) | 2017-07-28 | 2017-07-28 | Battery pack control system and charging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710628885.3A CN107204654A (en) | 2017-07-28 | 2017-07-28 | Battery pack control system and charging equipment |
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| CN107204654A true CN107204654A (en) | 2017-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710628885.3A Pending CN107204654A (en) | 2017-07-28 | 2017-07-28 | Battery pack control system and charging equipment |
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| CN112751387A (en) * | 2020-12-31 | 2021-05-04 | 沃太能源南通有限公司 | Converter system and battery system with same |
| CN115885447A (en) * | 2021-07-29 | 2023-03-31 | 宁德时代新能源科技股份有限公司 | Charging and discharging device, method for charging and discharging battery, and charging and discharging system |
| WO2023231486A1 (en) * | 2022-05-31 | 2023-12-07 | 比亚迪股份有限公司 | Battery circuit and vehicle |
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Application publication date: 20170926 |