CN207965088U - A kind of battery pack aging equipment - Google Patents
A kind of battery pack aging equipment Download PDFInfo
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- CN207965088U CN207965088U CN201721899009.6U CN201721899009U CN207965088U CN 207965088 U CN207965088 U CN 207965088U CN 201721899009 U CN201721899009 U CN 201721899009U CN 207965088 U CN207965088 U CN 207965088U
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- controller
- aging
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Abstract
The utility model discloses a kind of battery pack aging equipments.The device includes：Controller, the first two-way DC DC converters, the second two-way DC DC converters, the first battery pack, the second battery pack and AC DC converters；First two-way DC DC converters, the second two-way DC DC converters and AC DC converters are communicated to connect with controller respectively；AC DC converters are electrically connected by DC bus and the first two-way DC DC converters and the second two-way DC DC converters；First two-way DC DC converters and the first battery pack are electrically connected；Second two-way DC DC converters and the second battery pack are electrically connected；Wherein, controller is according to the output voltage of the first battery pack and the second battery pack, it controls AC DC converters and exports predeterminated voltage to DC bus, and the voltage change range and current direction of control the first two-way DC DC converters and the second two-way DC DC converters, with the real burin-in process stated to the first battery pack and the second battery pack.The device can improve the utilization rate of electric energy in battery pack ageing process, reduce aging cost.
Description
Technical field
The utility model is related to cell degradation technical field more particularly to a kind of battery pack aging equipments.
Background technology
Currently, power battery pack after the completion of production, needs to carry out at aging battery pack using battery pack aging equipment
Reason.Be out of order battery pack or defective batteries group can be investigated by burin-in process, it is also possible to detect the battery of battery pack
Capacity etc..However, in existing battery pack aging equipment, often battery pack power is consumed using resistive load, so not
But electric energy is caused largely to waste, and aging cost is also higher.
Utility model content
The utility model provides a kind of battery pack aging equipment, to improve the utilization of electric energy in battery pack ageing process
Rate reduces aging cost.
The utility model provides a kind of battery pack aging equipment comprising：Controller, the first bidirectional DC-DC converter,
Second bidirectional DC-DC converter, the first battery pack, the second battery pack and AC-DC converter；First bidirectional DC-DC converter
Device, the second bidirectional DC-DC converter and AC-DC converter are communicated to connect with the controller respectively；The AC-DC converter is logical
DC bus is crossed to be electrically connected with first bidirectional DC-DC converter and the second bidirectional DC-DC converter；Described first is two-way
DC-DC converter is also electrically connected with first battery pack；Second bidirectional DC-DC converter also with second battery
Group is electrically connected；Wherein, the controller is used for the output voltage according to first battery pack and the second battery pack, controls institute
It states AC-DC converter and exports predeterminated voltage, and control first bidirectional DC-DC converter and second to the DC bus
The voltage change range and current direction of bidirectional DC-DC converter, to realize to first battery pack and the second battery pack
Burin-in process.
In battery pack aging equipment provided by the utility model, the AC-DC converter is two-way AC-DC converter；
The controller be additionally operable to control the AC-DC converter by the DC conversion on the DC bus at alternating current with feedback
To AC network.
Further include discharge module in battery pack aging equipment provided by the utility model；The discharge module with it is described
DC bus is electrically connected.
In battery pack aging equipment provided by the utility model, first bidirectional DC-DC converter and the first battery
The number of group is at least two.
In battery pack aging equipment provided by the utility model, second bidirectional DC-DC converter and the second battery
The number of group is at least two.
In battery pack aging equipment provided by the utility model, the controller includes the first communication interface；The AC-
DC converters are communicated to connect by first communication interface and the controller.
In battery pack aging equipment provided by the utility model, the controller includes the second communication interface；Described
One bidirectional DC-DC converter and the second bidirectional DC-DC converter pass through second communication interface and the controller communication link
It connects.
In battery pack aging equipment provided by the utility model, the controller further includes external equipment connectivity port；
The controller is communicated to connect by the external equipment connectivity port and terminal.
In battery pack aging equipment provided by the utility model, first bidirectional DC-DC converter and second two-way
DC-DC converter is connect by communication bus with second communication interface.
In battery pack aging equipment provided by the utility model, the controller includes low-tension supply, the low tension
Source is electrically connected with the AC-DC converter.
The utility model provides a kind of battery pack aging equipment.The controller in the device is according to the first battery pack and
The output voltage of two battery packs, control AC-DC converter export predeterminated voltage, and the first two-way DC- of control to DC bus
The voltage change range and current direction of DC converters and the second bidirectional DC-DC converter, to realizing to the first battery pack and
The burin-in process of second battery pack.In the charge and discharge ageing process of the first battery pack and the second battery pack, charging aging is carried out
Battery pack can as carry out electric discharge aging battery pack load so that electric energy recycles sharp in battery pack aging equipment
With improving the utilization rate of the energy, reduce aging cost.
Description of the drawings
It is required in being described below to embodiment to make in order to illustrate more clearly of the utility model embodiment technical solution
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structural schematic diagram for battery pack aging equipment that the utility model embodiment provides；
Fig. 2 is a kind of structural schematic diagram for battery pack aging equipment that the utility model embodiment provides；
Fig. 3 is a kind of flow diagram for battery pack aging method that the utility model embodiment provides；
Fig. 4 is a kind of idiographic flow schematic diagram of battery pack aging method shown in Fig. 3；
Fig. 5 is a kind of flow diagram for battery pack aging method that the utility model embodiment provides.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is the utility model a part of the embodiment, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In Fig. 1 to Fig. 5, structurally similar or identical structure is to be given the same reference numerals.
Referring to Fig. 1, Fig. 1 is the electrical block diagram of battery pack aging equipment in the embodiment of the present application.The battery pack
Aging equipment 10 is used to carry out burin-in process to battery pack.Here battery pack can be power battery electricity group.
As shown in Figure 1, the battery pack aging equipment 10 includes controller 11, the first bidirectional DC-DC converter 12, second pairs
To DC-DC converter 13, the first battery pack 14, the second battery pack 15 and AC-DC converter 16.
First bidirectional DC-DC converter 12, the second bidirectional DC-DC converter 13 and AC-DC converter 16 respectively with control
Device 11 processed communicates to connect.
Specifically, which includes the first communication interface 111 and the second communication interface 112.The AC-DC converter 16
It is communicated to connect by first communication interface 111 and the controller 11.First bidirectional DC-DC converter 12 and second is two-way
DC-DC converter 13 is communicated to connect by second communication interface 112 and the controller 11.
In one embodiment, which can be CNA communication interfaces.Second communication interface can be
RS485 communication interfaces.Correspondingly, first bidirectional DC-DC converter 12 and the second bidirectional DC-DC converter 13 are total by communicating
Line 18 is communicated to connect with second communication interface 112.Wherein, which can be RS485 communication bus.
It should be noted that in other embodiments, first communication interface 111 and the second communication interface 112 can be with
For other kind of communication interface.Correspondingly, the first bidirectional DC-DC converter 12 and the second bidirectional DC-DC converter 13 can also lead to
It crosses other kind of mode to communicate to connect with the second communication interface 112, be not particularly limited herein.
The AC-DC converter 16 passes through DC bus 17 and first bidirectional DC-DC converter 12 and the second bi-directional DC-DC
Converter 13 is electrically connected.The AC-DC converter 16 is also electrically connected with AC network 20, is used for the exchange of AC network 20
Electrotransformation is at direct current so that battery pack aging equipment 10 uses.
First bidirectional DC-DC converter 12 is also electrically connected with first battery pack 14, second bidirectional DC-DC converter
Device 13 is also electrically connected with the second battery pack 15.
When needing to carry out burin-in process to the first battery pack 14 and the second battery pack 15, controller 11 is according to the first battery
The output voltage of group 14 and the second battery pack 15, control AC-DC converter 16 export predeterminated voltage, and control to DC bus 17
The voltage change range and current direction for making the first bidirectional DC-DC converter 12 and the second bidirectional DC-DC converter 13, to realize
To the burin-in process of the first battery pack 14 and the second battery pack 15.
Specifically, which gets the output electricity of the first battery pack 14 by the first bidirectional DC-DC converter 12
It presses, and gets the output voltage of the second battery pack 15 by the second bidirectional DC-DC converter 13.Controller 11 is according to first
The output voltage of battery pack 14 and the output voltage of the second battery pack 15 determine predeterminated voltage, are then generated according to the predeterminated voltage
Voltage control signal, and the voltage control signal is exported to AC-DC converter 16 by the first communication interface 111, so that AC-
DC converters 16 according to the voltage control signal by the AC conversion of AC network 20 at the direct current of predeterminated voltage, and will be pre-
If the direct current electricity output of voltage to DC bus 17, the at this time voltage on DC bus 17 is just adjusted to predeterminated voltage.
Controller 11 determines the first bidirectional DC-DC converter 12 and the second bi-directional DC-DC according to default charge and discharge rule
The current direction of converter 13.Then, controller 11 is two-way according to the output voltage of the first battery pack 14, predeterminated voltage and first
The current direction of DC-DC converter 12 determines the voltage change range of first bidirectional DC-DC converter 12, and according to
The current direction of the output voltages of two battery packs 15, predeterminated voltage and the second bidirectional DC-DC converter 13 determines this second pair
To the voltage change range of DC-DC converter 13.
Controller 11 generates the first control further according to the voltage change range and current direction of the first bidirectional DC-DC converter 12
Signal processed similarly generates second control signal according to the voltage change range of the second bidirectional DC-DC converter 13 and current direction.
Controller 11 sends the first control signal to first bidirectional DC-DC converter by the second communication interface 112
12 and the second control signal is sent to the second bidirectional DC-DC converter 13, to realize to the first battery pack 14 and the second electricity
The burin-in process of pond group 15.
For example, the output voltage of the first battery pack 14 is 3V, and the output voltage of the second battery pack 15 is 5V.Assuming that controller
11 according to the output voltage 5V of the output voltage 3V of first battery pack 14 and the second battery pack 15 predeterminated voltages determined be 6V.
So controller 11 generates voltage control signal according to predeterminated voltage 6V, then connects the voltage control signal by the first communication
Mouth 111 is sent to AC-DC converter 16.In this way, AC-DC converter 16 by the AC conversion of AC network 20 at the direct current of 6V
Electricity, and export to DC bus 17, the voltage on DC bus 17 is 6V at this time.
Assuming that the controller 11 determines the current direction of the first bidirectional DC-DC converter 12 according to default charge and discharge rule
Current direction for course of discharge, second bidirectional DC-DC converter 13 is charging direction.Wherein, which refers to electricity
Stream flows to 17 side of DC bus from the battery pack side of the first bidirectional DC-DC converter 12, i.e., first battery pack 14 is discharged outward.
The charging direction refers to electric current from 17 effluent of DC bus of the second bidirectional DC-DC converter 13 to battery pack side, i.e., this second
Battery pack 15 charges.
Controller 11 is that 3V, predeterminated voltage 6V and course of discharge are determined further according to the output voltage of first battery pack 14
The voltage change range of first bidirectional DC-DC converter 12 is to be converted into 6V from 3V.Similarly, according to second battery pack 15
Output voltage is the voltage change range that second bidirectional DC-DC converter 13 is determined in 5V, predeterminated voltage 6V and direction of charging
It is to be converted into 5V from 6V.
The voltage change range that controller 11 is converted into 6V according to course of discharge and from 3V generates first control signal, and
It is sent to the first bidirectional DC-DC converter 12 by second communication interface 112.Similarly, become according to charging direction and from 6V
The voltage change range for shifting to 5V generates second control signal, and is sent to the second two-way DC- by second communication interface 112
DC converters 13.
After the first bidirectional DC-DC converter 12 receives first control signal, it will be controlled according to the first control signal
Its current direction is course of discharge, while the direct current of 14 side of the first battery pack being converted into the direct current of 6V from 3V, and by 6V
Direct current be delivered to DC bus 17.It similarly, will after the second bidirectional DC-DC converter 13 receives second control signal
It is charging direction to control its current direction according to the second control signal, while the direct current of 17 side of DC bus being converted from 6V
It is filled with the second battery pack 15 at the direct current of 5V, and by the direct current of 5V, to complete the electric discharge of the first battery pack 14, the second battery
The ageing process that group 15 charges as load.
In above-mentioned ageing process, the electric energy that the first battery pack 14 is released makes for charging to the second battery pack 15
It obtains energy to be recycled in battery pack aging equipment 10, avoids energy dissipation in ageing process, improve the utilization of the energy
Rate.
In one embodiment, which is determining the first bidirectional DC-DC converter 12 according to default charge and discharge rule
When with the current direction of the second bidirectional DC-DC converter 13, the first bidirectional DC-DC converter 12 can be passed through and obtain the first battery
The electricity of group 14, and the electricity by the second bidirectional DC-DC converter 13 the second battery pack 15 of acquisition.Wherein, first electricity
The electricity of pond group 14 refers to 14 current residual electricity of the first battery pack, and the electricity of second battery pack 15 refers to the second battery pack 15
Current residual electricity.
The controller 11 judges whether the electricity of the first battery pack 14 is more than the electricity of the second battery pack 15.When controller 11
When judging that the electricity of first battery pack 14 is more than the electricity of the second battery pack 15, controller 11 determines the first two-way DC-
The current direction of DC converters 12 is charging direction, the i.e. direction from 17 to the first battery pack 14 of DC bus, and determining should
The current direction of second bidirectional DC-DC converter 13 is course of discharge, i.e., from the second battery pack 15 to the direction of DC bus 17.
Similarly, when controller 11 judges that the electricity of first battery pack 14 is not more than the electricity of the second battery pack 15, controller 11
Determine that the current direction of first bidirectional DC-DC converter 12 is course of discharge, i.e., from the first battery pack 14 to DC bus 17
Direction, and determine that the current direction of second bidirectional DC-DC converter 13 is charging direction, i.e., from DC bus 17 to the
The direction of two battery packs 15.That is, controller 11 preferentially charges to the battery pack more than remaining capacity, can subtract in this way
Few charge loss, saves electric energy.
It is understood that in other embodiments, controller 11 determines the first two-way DC- according to default charge and discharge rule
The concrete mode of the current direction of DC converters 12 and the second bidirectional DC-DC converter 13 can also be other modes, herein not
Do concrete restriction.
In one embodiment, which can be two-way AC-DC converter.That is, the AC-DC becomes
Alternating current in AC network 20 can be converted into direct current by parallel operation 16, can also will be straight in battery pack aging equipment 10
Galvanic electricity is converted into alternating current.
For example, when controller 11 judges that the electricity in the first battery pack 14 is not given out light completely, and the second battery pack 15 is
Through fully charged, in order to save electric energy, controller 11 can send voltage changeover control signal to AC-DC converter 16, so that
AC-DC converter 16 according to the voltage changeover control signal by the electricity on DC bus 17 from converting direct-current power into alternating-current power simultaneously
It is fed back in AC network 20.In this way, can AC network 20 be fed back to the extra electricity in first battery pack 14, with section
Save electric energy.
In one embodiment, as shown in Figure 1, the battery pack aging equipment 10 further includes discharge module 19.The discharge module
19 are electrically connected with DC bus 17.When controller 11 judges that the electricity in first battery pack 14 also has remaining, this
Extra electricity in one battery pack 14 can be consumed by discharge module 19.
It should be noted that the discharge module 19 can be with circuit modules such as resistive loads, as long as the discharge module 19 can be with
Extra electric quantity consumption in battery pack aging equipment 10 is fallen, the particular circuit configurations of discharge module 19 are not limited herein
System.
In one embodiment, when controller judges that the electricity in the first battery pack 14 has been given out light completely, and the second battery
Group 15 underfills electricity, that is to say, that when not enough power supply in first battery pack 14 is to be full of the second battery pack 15, controller 11
Charging control signal can be sent to AC-DC converter 16, so that AC-DC converter 16 will be handed over according to the charging control signal
Alternating current in galvanic electricity net 20 is converted into direct current electricity output to DC bus 17, with by AC network 20 to the second battery pack
15 continue to charge, until being full of the second battery pack 15.
In one embodiment, as shown in Fig. 2, Fig. 2 is the circuit knot of battery pack aging equipment in the utility model embodiment
Structure schematic diagram.In the battery pack aging equipment 10, the number of first bidirectional DC-DC converter 12 and the first battery pack 14 is
At least two.Similarly, the number of second bidirectional DC-DC converter 13 and the second battery pack 15 can also be at least two.
Wherein, which can be identical battery pack, or different battery pack, this at least two
A second battery pack 15 can be identical battery pack, or different battery pack.For example, at least two first battery
The output voltage of group 14 can be different, and the output voltage of at least two second battery pack 15 can also be different.
It should be noted that in the present embodiment, first bidirectional DC-DC converter 12, the second bidirectional DC-DC converter
13, the first battery pack 14 and " first " and " second " in the second battery pack 15 describe two devices just for the sake of facilitating, should
" first " and " second " cannot be used for the device that two devices of explanation are mutually different.For example, first bidirectional DC-DC converter
12 and second bidirectional DC-DC converter 13 can be identical bidirectional DC-DC converter, or different bi-directional DC-DCs
Converter, first battery pack 14 and the second battery pack 15 can be identical battery pack, or different battery pack,
It is not particularly limited herein.
In addition, when the number of bidirectional DC-DC converter and battery pack in battery pack aging equipment 10 is three or more
When a, controller 11 can according to the demand of user be combined multiple bidirectional DC-DC converters and battery pack, with right simultaneously
Multiple battery packs carry out charge and discharge, improve ageing efficiency.For example, as illustrated in fig. 2, it is assumed that in the battery pack aging equipment 10
One bidirectional DC-DC converter 12, the second bidirectional DC-DC converter 13, the number of the first battery pack 14 and the second battery pack 15 are equal
It is two.So controller 11 can control two the first battery packs 14 while discharge, and two the second battery packs 15 are simultaneously
It charges as load, or one the first battery pack 14 of control and second battery pack 15 are discharged simultaneously, another the
One battery pack 14 and another second battery pack 15 as load charge, etc. simultaneously.
In one embodiment, which further includes external equipment connectivity port.The controller 11 outside this by setting
Standby connectivity port is communicated to connect with terminal 30.Wherein, which can be the external equipments such as computer.Battery pack aging fills in this way
Interaction can be carried out by terminal 30 and user by setting 10, and for example, controller 11 can get user setting by terminal 30
Ageing process is shown to user's viewing etc. by the parameter or controller 11 of ageing process by terminal 30.
In one embodiment, which further includes low-tension supply 113.The low-tension supply 113 and AC-DC converter 16
It is electrically connected, for obtaining electric energy from AC-DC converter 16 and powering to controller 11.
In the battery pack aging equipment 10 of the present embodiment, the controller 11 is according to the first battery pack 14 and the second battery pack
15 output voltage, control AC-DC converter 16 export predeterminated voltage, and the first bi-directional DC-DC of control to DC bus 17
The voltage change range and current direction of converter 12 and the second bidirectional DC-DC converter 13, to realize to the first battery pack
14 and second battery pack 15 burin-in process.In the charge and discharge ageing process of the first battery pack 14 and the second battery pack 15, into
The battery pack of row charging aging can be as the load for the battery pack for carrying out electric discharge aging so that electric energy is in battery pack aging equipment
Cycle is utilized in 10, improves the utilization rate of the energy, reduces aging cost.
Referring to Fig. 3, Fig. 3 is a kind of flow diagram of battery pack aging method in the utility model embodiment.The electricity
Pond group aging method is applied to any one battery pack aging equipment in the utility model.The battery pack aging method can be by electricity
Controller in the group aging equipment of pond executes.Since the battery pack aging equipment is described in previous embodiment in detail
Circuit structure, details are not described herein.
The battery pack aging method includes step S101 to step S109.
S101, the output voltage that the first battery pack is obtained by the first bidirectional DC-DC converter.
S102, the output voltage that the second battery pack is obtained by the second bidirectional DC-DC converter.
S103, predeterminated voltage is determined according to the output voltage of first battery pack and the output voltage of the second battery pack.
In one embodiment, output voltage of the controller in the output voltage and the second battery pack for getting the first battery pack
Afterwards, by the output voltage for obtaining the first battery pack and an output voltage larger in the output voltage of the second battery pack, and will
The larger output voltage is multiplied by default weight to obtain predeterminated voltage.
For example, the output voltage of the first battery pack is 3V, and the output voltage of the second battery pack is 5V, then controller obtains
Larger output voltage is just 5V.Assuming that the default weight is 1.2, then the predeterminated voltage that controller is calculated is just 6V.
It is understood that the default weight can also be other numerical value.The default weight can according to actual demand into
Row setting.In general, predeterminated voltage is higher than 10% to 20% of maximum output voltage in battery pack, therefore, Ke Yigen
Default weight is adjusted according to above-mentioned percentage, is not particularly limited herein.
It should be noted that in other embodiments, controller is according to the output voltage and the second battery of the first battery pack
The output voltage of group determines that the mode of predeterminated voltage is not limited to aforesaid way, can also be other modes.For example, in controller
It is previously stored with voltmeter, which includes the correspondence of maximum output voltage and predeterminated voltage.Controller obtains first
A larger output voltage, then larger according to this in the output voltage of battery pack and the output voltage of the second battery pack
Output voltage searches the voltmeter to obtain corresponding predeterminated voltage.
S104, voltage control signal is generated according to the predeterminated voltage, and sends the voltage control signal to AC-DC changes
Parallel operation exports the predeterminated voltage to control the AC-DC converter to DC bus.
Controller will generate voltage control signal, and by the voltage after getting predeterminated voltage according to the predeterminated voltage
Control signal is sent to AC-DC converter.It, will be according to the voltage control after AC-DC converter receives the voltage control signal
Signal processed exports predeterminated voltage to DC bus.
S105, first bidirectional DC-DC converter and the second bidirectional DC-DC converter are determined according to default charge and discharge rule
The current direction of device.
In one embodiment, as shown in figure 4, Fig. 4 is the idiographic flow schematic diagram of battery pack aging method shown in Fig. 3.It should
Step S105 includes：
S1051, the electricity that first battery pack is obtained by first bidirectional DC-DC converter.
In the present embodiment, the electricity of first battery pack can be remaining capacity in the first battery pack.
S1052, the electricity that second battery pack is obtained by second bidirectional DC-DC converter.
In the present embodiment, the electricity of second battery pack can be remaining capacity in the second battery pack.
If the electricity of S1053, first battery pack is more than the electricity of second battery pack, determine that described first is two-way
The current direction of DC-DC converter is from the DC bus to the direction of first battery pack, and determining described second
The current direction of bidirectional DC-DC converter is from second battery pack to the direction of the DC bus.
When controller judges that the electricity of the first battery pack is more than the electricity of the second battery pack, in order to reduce charging damage
Consumption improves and saves electric energy, and controller will determine that the current direction of first bidirectional DC-DC converter is charging direction, i.e., from straight
Flow busbar to the direction of the first battery pack, and determine that the current direction of the second bidirectional DC-DC converter is course of discharge, i.e., from
Second battery pack is to the direction of DC bus.
If the electricity of S1054, first battery pack is not more than the electricity of second battery pack, described first pair is determined
It is and to determine described the from first battery pack to the direction of the DC bus to the current direction of DC-DC converter
The current direction of two bidirectional DC-DC converters is from the DC bus to the direction of second battery pack.
When controller judges that the electricity of the first battery pack is not more than the electricity of the second battery pack, controller will determine should
The current direction of first bidirectional DC-DC converter is course of discharge, i.e., from the first battery pack to the direction of DC bus, and really
The current direction of fixed second bidirectional DC-DC converter is charging direction, i.e., from DC bus to the direction of the second battery pack.
Certainly, in other embodiments, controller can also be determined using other modes the first bidirectional DC-DC converter and
The current direction of second bidirectional DC-DC converter, is not particularly limited herein.
S106, according to the output voltage of first battery pack, the electric current of predeterminated voltage and the first bidirectional DC-DC converter
Direction determines the voltage change range of first bidirectional DC-DC converter.
For example, the output voltage of the first battery pack is 3V, predeterminated voltage 6V, the electricity of first bidirectional DC-DC converter
It is charging direction to flow direction, then controller determines that the voltage change range of first bidirectional DC-DC converter is to be converted from 6V
To 3V.That is, first bidirectional DC-DC converter needs the electricity that the 6V predeterminated voltages on DC bus are converted into 3V
Pressure.
S107, according to the output voltage of second battery pack, the electric current of predeterminated voltage and the second bidirectional DC-DC converter
Direction determines the voltage change range of second bidirectional DC-DC converter.
For example, the output voltage of the second battery pack is 5V, predeterminated voltage 6V, the electricity of second bidirectional DC-DC converter
Stream direction is course of discharge, then controller determines that the voltage change range of second bidirectional DC-DC converter is to be converted from 5V
To 6V.That is, second bidirectional DC-DC converter needs the predeterminated voltage that the voltage of 5V is converted into 6V.
S108, the first control is generated according to the voltage change range and current direction of first bidirectional DC-DC converter
Signal, and second control signal is generated according to the voltage change range of second bidirectional DC-DC converter and current direction.
S109, the first control signal is sent to first bidirectional DC-DC converter and sends second control
Signal processed is to second bidirectional DC-DC converter, to realize the burin-in process to first battery pack and the second battery pack.
For example, it is course of discharge which controls current direction according to second control signal, and electric
Bucklingization is ranging from changed to 6V from 5V.At this point, electric energy is transmitted to DC bus by second battery pack, that is, carry out electric discharge aging
Processing.First bidirectional DC-DC converter controls current direction as charging direction according to first control signal, and voltage change model
It encloses to be changed to 3V from 6V.The first battery pack obtains electric energy from DC bus and carries out charging burin-in process at this time.
In one embodiment, as shown in figure 5, the flow that Fig. 5 is battery pack aging method in the utility model embodiment is shown
It is intended to.After step S109, further include：
The state of charge of S110, monitoring first battery pack and the second battery pack.
Controller by the first bidirectional DC-DC converter and the second bidirectional DC-DC converter come monitor the first battery pack and
The state of charge of second battery pack.
S111, first battery pack and second are judged according to the state of charge of first battery pack and the second battery pack
Whether battery pack completes a burin-in process.
Specifically, controller judges whether the electricity for carrying out the battery pack of electric discharge aging discharges, and judges to charge
Whether the electricity of the battery pack of aging is full of.Wherein, the battery pack for carrying out electric discharge aging is to carry out the battery of electric discharge ageing process
Group, the battery pack for carrying out charging aging are to carry out the battery pack of charging ageing process.
When the electricity that controller judges to carry out the battery pack of electric discharge aging has discharged, and carry out the battery pack of charging aging
Electricity have been filled with, controller will judge that first battery pack and the second battery pack complete a burin-in process, and execute step
S112。
When the electricity that controller judges to carry out the battery pack of electric discharge aging does not discharge, and carry out the battery pack of charging aging
Electricity have been filled with, controller will execute step S113.
When the electricity that controller judges to carry out the battery pack of electric discharge aging has discharged, and carry out the battery pack of charging aging
Electricity underfill, controller will execute step S114.
If S112, first battery pack and the second battery pack complete a burin-in process, to first bi-directional DC-DC
Converter sends third control signal so that first bidirectional DC-DC converter carries out negative direction to first battery pack
Burin-in process, and the 4th control signal is sent so that second bi-directional DC-DC to second bidirectional DC-DC converter
Converter carries out negative direction burin-in process to second battery pack.
For example, when controller judges that the electricity of first battery pack has discharged, and the second battery pack has been filled with electricity,
Controller sends third to the first bidirectional DC-DC converter and controls signal, so that the first bidirectional DC-DC converter control circuit
Direction is charging direction, and corresponding voltage change range is to be converted into 3V from 6V, is charged to the first battery pack to realize
Burin-in process, i.e. negative direction burin-in process.Similarly, which sends the 4th control signal to the second bidirectional DC-DC converter,
So that the second bidirectional DC-DC converter control circuit direction is course of discharge, corresponding voltage change range is to be converted from 5V
To 6V, electric discharge burin-in process, i.e. negative direction burin-in process are carried out to the second battery pack to realize.In the negative direction burin-in process
In the process, load of first battery pack as the second battery pack, the electric energy which releases carry out for the first battery pack
Charging is realized and is recycled inside electric energy.
It is understood that the negative direction burin-in process is for last burin-in process, and for example, the first battery
The first time burin-in process of group is electric discharge burin-in process, then negative direction burin-in process is just charging burin-in process.
If S113, the battery pack for carrying out charging aging fill with electricity, and carry out the electricity of the battery pack of electric discharge aging
It does not discharge, voltage changeover control signal is sent to the AC-DC converter, so that the AC-DC converter is according to the electricity
Press changeover control signal by the converting direct-current power into alternating-current power on DC bus to be fed back to AC network.
In the present embodiment, when carry out charging aging battery pack fill with electricity, and carry out electric discharge aging battery
When the electricity of group does not discharge, the remaining capacity for the battery pack for carrying out electric discharge aging can be converted into alternating current and fed back to by controller
AC network avoids the waste of electric energy to save electric energy.
It certainly, in other embodiments, can also be by putting when the electricity of battery pack for carrying out electric discharge aging does not discharge
Electric module falls the extra power consumption in DC bus.
If the electricity of S114, the battery pack for carrying out electric discharge aging have discharged, and carry out the electricity of the battery pack of charging aging
Underfill sends charging control signal, so that the AC-DC converter is believed according to charge control to the AC-DC converter
Number the alternating current in the AC network is converted into direct current electricity output to the DC bus, with to it is described charge it is old
The battery pack of change charges.
In the present embodiment, when the not enough power supply for the battery pack for carrying out electric discharge aging is with full of the battery for carrying out charging aging
When the electricity of group, controller can control AC-DC converter and the alternating current in AC network is converted into direct current, with to carrying out
The battery pack of charging aging continues to charge, so that the battery pack for carrying out charging aging can complete charging ageing process.
In one embodiment, the number of the first bidirectional DC-DC converter and the first battery pack in battery pack aging equipment
It is at least two, the number of the second bidirectional DC-DC converter and the second battery pack is at least two.That is, the electricity
The number of bidirectional DC-DC converter and battery pack is at least three in the group aging equipment of pond.At this point, controller control at least three
The ageing process of a battery pack is similar with the above process.Those skilled in the art can easily obtain according to the above process
Corresponding control process when to the case where at least three battery packs, details are not described herein.
It should be noted that in other embodiments, after step sl 12, controller can also return to step
S110 continues the state of charge for monitoring the first battery pack and the second battery pack, to realize to the first battery pack and the second electricity
The third time burin-in process of pond group and more times burin-in process, are not limited the number of burin-in process herein.
In addition, it is necessary to illustrate, in the battery pack aging method in the present embodiment, the sequencing between each step
It can be adjusted.For example, step S101 and step S102 can exchange sequencing in Fig. 3.Or in Fig. 4, step
S1051 and step S1052 can exchange sequencing.Or in Fig. 4, the electricity in step S1051 can be with step S101
In output voltage obtain together, i.e. step S1051 and step S101 can be merged into a step, similarly, in step S1052
Electricity can be obtained together with the output voltage in step S102, i.e. step S1052 and step S102 can be merged into one
Step.
Battery pack aging method in the present embodiment, to battery pack carry out ageing process in, electric energy battery pack it
Between recycled, save electric energy, avoid waste of energy.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality
Novel protection domain should be subject to the protection scope in claims.
Claims (10)
1. a kind of battery pack aging equipment, which is characterized in that including：It is controller, the first bidirectional DC-DC converter, second two-way
DC-DC converter, the first battery pack, the second battery pack and AC-DC converter；First bidirectional DC-DC converter, second pair
It is communicated to connect respectively with the controller to DC-DC converter and AC-DC converter；The AC-DC converter passes through direct current mother
Line is electrically connected with first bidirectional DC-DC converter and the second bidirectional DC-DC converter；First bi-directional DC-DC becomes
Parallel operation is also electrically connected with first battery pack；Second bidirectional DC-DC converter is also electrical with second battery pack
Connection；Wherein, the controller is used for the output voltage according to first battery pack and the second battery pack, controls the AC-
DC converters export predeterminated voltage to the DC bus, and control first bidirectional DC-DC converter and second two-way
The voltage change range and current direction of DC-DC converter, to realize the aging to first battery pack and the second battery pack
Processing.
2. battery pack aging equipment according to claim 1, which is characterized in that the AC-DC converter is two-way AC-DC
Converter；The controller is additionally operable to control the AC-DC converter by the DC conversion on the DC bus into exchange
Electricity is to be fed back to AC network.
3. battery pack aging equipment according to claim 1, which is characterized in that further include discharge module；The electric discharge mould
Block is electrically connected with the DC bus.
4. battery pack aging equipment according to claim 1, which is characterized in that first bidirectional DC-DC converter and
The number of first battery pack is at least two.
5. battery pack aging equipment according to claim 1, which is characterized in that second bidirectional DC-DC converter and
The number of second battery pack is at least two.
6. battery pack aging equipment according to claim 2, which is characterized in that the controller includes that the first communication connects
Mouthful；The AC-DC converter is communicated to connect by first communication interface and the controller.
7. battery pack aging equipment according to claim 1, which is characterized in that the controller includes that the second communication connects
Mouthful；First bidirectional DC-DC converter and the second bidirectional DC-DC converter pass through second communication interface and the control
Device communicates to connect.
8. battery pack aging equipment according to claim 1, which is characterized in that the controller further includes that external equipment connects
Connect port；The controller is communicated to connect by the external equipment connectivity port and terminal.
9. battery pack aging equipment according to claim 7, which is characterized in that first bidirectional DC-DC converter and
Second bidirectional DC-DC converter is connect by communication bus with second communication interface.
10. battery pack aging equipment according to claim 1, which is characterized in that the controller includes low-tension supply, institute
Low-tension supply is stated to be electrically connected with the AC-DC converter.
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| CN201721899009.6U CN207965088U (en) | 2017-12-29 | 2017-12-29 | A kind of battery pack aging equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107976639A (en) * | 2017-12-29 | 2018-05-01 | 深圳市百耐信科技有限公司 | A kind of battery pack aging equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976639A (en) * | 2017-12-29 | 2018-05-01 | 深圳市百耐信科技有限公司 | A kind of battery pack aging equipment and method |
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