CN209104849U - A kind of battery charging and discharging equalising control device - Google Patents
A kind of battery charging and discharging equalising control device Download PDFInfo
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- CN209104849U CN209104849U CN201822132237.1U CN201822132237U CN209104849U CN 209104849 U CN209104849 U CN 209104849U CN 201822132237 U CN201822132237 U CN 201822132237U CN 209104849 U CN209104849 U CN 209104849U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
A kind of battery charging and discharging equalising control device provided by the utility model.The battery charging and discharging equalising control device includes: the first detection circuit, the second detection circuit, controller and charge-discharge circuit, and the first detection circuit is used to detect the voltage of each battery of battery pack；Controller is used to calculate the pressure difference of battery pack according to the voltage of each battery of battery pack of detection, and the pressure difference refers to the difference of battery cell ceiling voltage and minimum voltage；Controller determines corresponding euqalizing current according to the range of the pressure difference；According to the euqalizing current to battery carry out equilibrium fill electric discharge.The adaptive equalization electric current that the utility model passes through different pressure differences, accomplish that big pressure difference high current is balanced, small pressure difference low current is balanced, adjustment in real time, guarantee the optimum state of battery pack, by the utility model, the battery pressure difference problems of too that echelon utilizes battery, the effective appearance for mitigating short -board effect are solved.
Description
Technical field
The utility model relates to charging technique fields, in particular to a kind of battery charging and discharging equalising control device.
Background technique
With the domestic and international popularization to new energy industry, the new-energy automobile market based on power battery is occupied
Amount also improves rapidly, and electric car is higher to the performance requirement of power battery, when the performance of power battery declines to a certain extent
(70-80% of capacity attenuation to rated capacity) afterwards, in order to ensure the power performance of electric car, continual mileage and operational process
In security performance, it must just be replaced, retired battery can be used to do other storages there are also very big residual capacity
Energy product, and retired battery haves the characteristics that internal resistance increase, self discharge are fast, is influenced by charge and discharge, therefore feeds back and arrive monomer sheet
Body just will appear that voltage change is obvious, the big problem of pressure difference between battery pack.
Utility model content
In view of this, the utility model embodiment is designed to provide a kind of battery charging and discharging equalising control device, with
Improve the existing battery pack larger problem of pressure difference in use.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of battery charging and discharging equalising control device, the battery charging and discharging equalising control device packet
Include: the first detection circuit is electrically connected with battery pack, is also electrically connected with the controller, for detecting the electricity of each battery in battery pack
Pressure, and the cell voltage that will test is sent to controller；Controller is connect with charge-discharge circuit, for according to cell voltage
Confirm corresponding euqalizing current, and according to the control signal of the default duty ratio of the euqalizing current of confirmation generation to charge-discharge circuit；
Charge-discharge circuit is connect with controller, is also connect with battery pack, for carrying out default mould to battery pack according to the control signal
The charge and discharge of formula are so that euqalizing current is the value of setting.
Further, the controller is used to calculate the pressure difference of battery pack according to the voltage of each battery of battery pack of detection
Value, the pressure difference refer to the difference of battery cell ceiling voltage and minimum voltage.
Further, the controller is used to determine corresponding euqalizing current according to the range of the pressure difference, specific to wrap
It includes: when the pressure difference is greater than the first preset pressure value, determining that the euqalizing current is the first pre-set current value；When the pressure
Difference is less than the first preset pressure value, when being greater than or equal to the second preset pressure value, determines that the euqalizing current is second default
Current value；When the pressure difference determines that the euqalizing current is when being greater than third preset pressure value less than the second preset pressure value
Third pre-set current value.
Further, the first preset pressure value is 150mV, and the second preset pressure value is 100mV, described the
Three preset pressure values are 50mV.
Further, first pre-set current value is 5A, and second pre-set current value is 4A, the default electricity of the third
Flow valuve is 3A.
Further, the battery charging and discharging equalising control device further includes the second detection circuit, the second detection electricity
Road is electrically connected with the controller, and second detection circuit is also electrically connected with battery, and second detection circuit is for detecting
The euqalizing current of battery, and the euqalizing current that will test is sent to controller, the controller is according to the equilibrium electricity detected
Stream generates the control signal of default duty ratio to the charge-discharge circuit, and the charge-discharge circuit is according to the control signal to electricity
Pond group carries out the charge and discharge of preset mode so that euqalizing current is the value of setting.
Further, second detection circuit includes sampling resistor and detector, the sampling resistor and the battery
The output end electrical connection of group, the detector are used to detect the voltage or voltage at sampling resistor both ends, and the voltage hair that will test
It send to controller.
Further, the detector is bidirectional shunt monitor.
Compared with the prior art, the utility model has the following beneficial effects:
A kind of battery charging and discharging equalising control device provided by the utility model.The battery charging and discharging equalising control device
It include: the first detection circuit, the second detection circuit, controller and charge-discharge circuit, the first detection circuit is for detecting battery pack
The voltage of each battery；Controller is used to calculate the pressure difference of battery pack, the pressure according to the voltage of each battery of battery pack of detection
Difference refers to the difference of battery cell ceiling voltage and minimum voltage；Controller determines corresponding according to the range of the pressure difference
Euqalizing current；According to the euqalizing current to battery carry out equilibrium fill electric discharge.The utility model is adaptive by different pressure differences
Euqalizing current is answered, accomplishes that big pressure difference high current is balanced, small pressure difference low current is balanced, adjusts in real time, guarantees the optimal shape of battery pack
State solves the battery pressure difference problems of too that echelon utilizes battery by the utility model, effective to mitigate going out for short -board effect
It is existing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 shows a kind of flow chart of battery charging and discharging balance control method provided by the utility model.
Fig. 2 shows the schematic diagrames of battery charging and discharging equalising control device.
Fig. 3 shows the circuit diagram of battery charging and discharging equalising control device
Icon: 100- battery charging and discharging equalising control device；110- controller；The first detection circuit of 120-；130- charge and discharge
Circuit；The second detection circuit of 140-；200- battery pack.
Specific embodiment
Below in conjunction with attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.
It is in the description of the present invention, it should also be noted that, herein, such as first and second or the like pass
It is that term is only used to distinguish one entity or operation from another entity or operation, and not necessarily requires or secretly
Show that there are any actual relationship or orders between these entities or operation.The terms "include", "comprise" or its
What his variant is intended to non-exclusive inclusion, so that including the process, methods of a series of elements, article or setting
Standby includes not only those elements, but also including other elements that are not explicitly listed, or further includes for this process, side
Method, article or the intrinsic element of equipment.In the absence of more restrictions, limited by sentence "including a ..."
Element, it is not excluded that there is also other identical elements in the process, method, article or apparatus that includes the element.It is right
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
With reference to the accompanying drawing, it elaborates to some embodiments of the utility model.In the absence of conflict, under
The feature in embodiment and embodiment stated can be combined with each other.
First embodiment
Present embodiments provide a kind of battery charging and discharging balance control method, the battery charging and discharging balance control method institute
Battery charging and discharging balance control method is stated applied to a battery charging and discharging equalising control device 100, the battery charging and discharging is balanced
Control device 100 includes: the first detection circuit 120, controller 110, charge-discharge circuit 130 and the second detection circuit 140,
For the balance charge/discharge of battery pack 200, by the adaptive equalization electric current of different pressure differences, accomplish that big pressure difference high current is balanced,
Small pressure difference low current is balanced, adjusts in real time, guarantees the optimum state of battery pack 200.Referring to Fig. 1, the described method includes: S10
~S60.
The cell voltage that S10: the first detection circuit 120 detects the voltage of each battery of battery pack 200, and will test is sent
To controller 110.
First detection circuit 120 is electrically connected with battery, and the first detection circuit 120 is also electrically connected with controller 110, and first
Detection circuit 120 is used to detect the voltage of each battery in battery pack 200, to obtain the voltage value of each battery.Yu Ben
In embodiment, the first detection circuit 120 may include multiple high-precision AFE(analog front end)s to realize detection cell voltage, this simulation
Front end can be the 6804 of Liner, and 6811 etc., it is also possible to the MC33771 of NXP or the AFE(analog front end) of other producers, needs
What is illustrated says, cell voltage precision needs to control within 5Mv or smaller error.First detection circuit 120 detects each electricity
After the voltage in pond, the cell voltage that will test is sent to controller 110.
S20: controller 110 calculates the pressure difference of battery pack 200 according to the voltage of each battery of battery pack 200 of detection.
The pressure difference refers to the difference of battery pack 200 maximum battery voltage and minimum voltage.Controller 110 is according to
The cell voltage of one detection circuit 120 detection calculates the pressure difference of battery pack 200, and specifically, controller 110 is from the multiple of detection
Maximum cell voltage, the i.e. ceiling voltage of battery pack 200 are chosen in cell voltage；And from multiple cell voltages of detection
Choose the smallest cell voltage, the i.e. minimum voltage of battery pack 200, the ceiling voltage and battery of the battery pack 200 of controller 110
The minimum voltage of group 200 asks difference to obtain the pressure difference of battery pack 200.It is each battery in battery pack 200 there are the reason of pressure difference
Charging and discharging state it is asynchronous, will lead to battery pack 200 occur more lossy, reduce battery pack 200 energy storage capacity.
S30: controller 110 determines corresponding euqalizing current according to the range of the pressure difference, according to determining equilibrium electricity
Stream generates control signal, and the control signal of generation is sent to charge-discharge circuit 130.
Euqalizing current is for state different between balanced each battery, and active equalization is carried out in a manner of electricity transfer
Equilibrium, it is high-efficient, it loses small.The utility model euqalizing current is 0-5A, and self application adjusts euqalizing current, in this present embodiment,
It enables Δ V indicate the pressure difference of battery pack 200, three or more pressure difference Δ V can be set and use different euqalizing currents, example
First preset pressure value A1, the second preset pressure value A2, third preset pressure value A3, A1=150mV, A2=100mV is such as set,
A3=50mV determines that the euqalizing current is the first pre-set current value, institute when the pressure difference is greater than the first preset pressure value
Stating the first pre-set current value is 5A, i.e., as Δ V >=A1, euqalizing current is automatically set as 5A；When the pressure difference is less than first
Preset pressure value when being greater than or equal to the second preset pressure value, determines that the euqalizing current is the second pre-set current value, described the
Two pre-set current values are 4A, i.e., as A1 > Δ V >=A2, euqalizing current is automatically set as 4A；When the pressure difference is pre- less than second
If pressure difference, when being greater than third preset pressure value, determine that the euqalizing current is third pre-set current value, the default electricity of the third
Flow valuve is 3A, i.e., as A2 > Δ V >=A3, euqalizing current is automatically set as 3A, as Δ V < A3, when can not do equilibrium treatment, but
Can also further stepping time it is balanced, to guarantee better use demand.
It should be noted that in this present embodiment, since there may be certain errors for the voltage of detection, so pressure difference
There is also errors, therefore, carry out balanced electricity again after pressure difference Δ V is maintained at a range certain time (such as 10s or 20s)
Stream switching guarantees that equilibrium will not ceaselessly be jumped in critical value.
After controller 110 determines euqalizing current according to the range of pressure difference, control letter is generated according to determining euqalizing current
Number, and the control signal of generation is sent to charge-discharge circuit 130；Determining euqalizing current is sent to charge-discharge circuit 130.
The control signal includes charging control signal and discharge control signal, and controller 110 adjusts charging control signal or electric discharge control
The adjustable euqalizing current of the duty ratio of signal processed, generally, the duty ratio for controlling signal is bigger, then euqalizing current is bigger.
S40: charge-discharge circuit 130 according to the control signal to battery carry out equilibrium fill electric discharge.
Charge-discharge circuit 130 includes charging circuit and discharge circuit, and charge-discharge circuit 130 is used for according to charging control signal
It charging the battery, it is possible to understand that the duty ratio on ground, charging control signal is different, and charging duration is different, so as to
With the euqalizing current of regulating cell group 200.Similarly, the duty ratio of discharge control signal is different, when battery pack 200 discharges lasting
Between different, the euqalizing current of adjustable battery pack 200.In this present embodiment, charge-discharge circuit 130 is sent out according to controller 110
The control signal sent carries out the charge and discharge of preset mode, so that the euqalizing current of battery pack 200 is the value that controller 110 determines.
In this present embodiment, the method also includes:
The detection of S50: the second detection circuit 140 obtains the euqalizing current of battery pack 200, and will test the euqalizing current of acquisition
It is sent to controller 110.
Second detection circuit 140 is connect with battery pack 200, and the second detection circuit 140 is also electrically connected with controller 110, the
Two detection circuits 140 are used to detect the euqalizing current of battery pack 200.And the euqalizing current that will test feeds back to controller 110.Control
Device 110 processed can adjust the control signal dutyfactor of charge-discharge circuit 130 in real time according to the euqalizing current of feedback, so that balanced electricity
Stream remains preset value.
S60: when the euqalizing current of acquisition determines that corresponding euqalizing current has difference with the range according to the pressure difference
When being worth larger, the charge and discharge duty ratio of 110 regulating cell of controller is so that the euqalizing current is the value of setting.
The euqalizing current that second detection circuit 140 will test is sent to controller 110, the equilibrium that controller 110 will test
Electric current is compared with predetermined euqalizing current, for example, if the euqalizing current of detection is greater than predetermined euqalizing current,
The duty ratio of low control signal is then dropped, to pass through the charge and discharge of 130 regulating cell group 200 of charge-discharge circuit, makes battery pack 200
Euqalizing current be maintained at presetting value.The euqalizing current of detection is less than predetermined euqalizing current, then increases control letter
Number duty ratio, to make the euqalizing current of battery pack 200 by the charge and discharge of 130 regulating cell group 200 of charge-discharge circuit
It is maintained at presetting value.
Second embodiment
Referring to Fig. 2, Fig. 2 is a kind of battery charging and discharging equalising control device that the utility model preferred embodiment provides
100, battery charging and discharging equalising control device 100 can be used for executing the battery charging and discharging Balance route side of first embodiment offer
Method.It should be noted that battery charging and discharging equalising control device 100 provided by the present embodiment, basic principle and generation
Technical effect and battery charging and discharging balance control method provided by the above embodiment are essentially identical, to briefly describe, the present embodiment
Part does not refer to place, can refer to corresponding contents in the above embodiments.
Fig. 2 and Fig. 3 are please referred to, the battery charging and discharging equalising control device 100 includes: the first detection circuit 120, second
Detection circuit 140, controller 110 and charge-discharge circuit 130.
Wherein, the first detection circuit 120 is electrically connected with battery pack 200, is also electrically connected with controller 110, for detecting electricity
The voltage of each battery in pond group 200, and the cell voltage that will test is sent to controller 110.
First detection circuit 120 may include multiple high-precision AFE(analog front end)s to realize detection cell voltage, this simulation
Front end can be the 6804 of Liner, and 6811 etc., it is also possible to the MC33771 of NXP or the AFE(analog front end) of other producers, needs
Explanation says that cell voltage precision needs to control within 5Mv or smaller error.First detection circuit 120 detects each battery
Voltage after, the cell voltage that will test is sent to controller 110.
It is to be appreciated that the first detection circuit 120 can be used for executing S10.
Controller 110 is connect with charge-discharge circuit 130, for confirming corresponding euqalizing current, and root according to cell voltage
The control signal of default duty ratio is generated to charge-discharge circuit 130 according to the euqalizing current of confirmation.
Specifically, controller 110 calculates the pressure difference of battery pack 200 according to the cell voltage that the first detection circuit 120 detects
It is worth Δ V, for example, asking difference to obtain the pressure of battery pack 200 according to the minimum voltage of the ceiling voltage of battery pack 200 and battery pack 200
Difference.The controller 110 is used to determine corresponding euqalizing current according to the range of the pressure difference, specifically include: when described
When pressure difference is greater than the first preset pressure value, determine that the euqalizing current is the first pre-set current value；When the pressure difference is less than
First preset pressure value when being greater than or equal to the second preset pressure value, determines that the euqalizing current is the second pre-set current value；When
The pressure difference is less than the second preset pressure value, when being greater than third preset pressure value, determines that the euqalizing current is default for third
Current value.
In this present embodiment, the first preset pressure value is 150mV, and the second preset pressure value is 100mV, described
Third preset pressure value is 50mV；First pre-set current value is 5A, and second pre-set current value is 4A, and the third is pre-
If current value is 3A.But not limited to this, it may be arranged as other values, the present embodiment is not construed as limiting this.
It should be noted that in this present embodiment, since there may be certain errors for the voltage of detection, so pressure difference
There is also errors, therefore, carry out balanced electricity again after pressure difference Δ V is maintained at a range certain time (such as 10s or 20s)
Stream switching guarantees that equilibrium will not ceaselessly be jumped in critical value.
After controller 110 determines euqalizing current according to the range of pressure difference, control letter is generated according to determining euqalizing current
Number, and the control signal of generation is sent to charge-discharge circuit 130；Determining euqalizing current is sent to charge-discharge circuit 130.
The control signal includes charging control signal and discharge control signal, and controller 110 adjusts charging control signal or electric discharge control
The adjustable euqalizing current of the duty ratio of signal processed, generally, the duty ratio for controlling signal is bigger, then euqalizing current is bigger.
Charge-discharge circuit 130 is connect with controller 110, is also connect with battery pack 200, for according to the control signal
To battery pack 200 carry out preset mode equilibrium fill electric discharge.
Charge-discharge circuit 130 includes charging circuit and discharge circuit, and charge-discharge circuit 130 is used for according to charging control signal
It charges the battery or discharges, charging circuit is connect by the control terminal of first switch tube Q1 with controller 110, for receiving
Charging control signal, discharge circuit is connect by second switch Q2 with controller 110, for receiving discharge control signal, in
In the present embodiment, charging control signal, discharge control signal are pulse waveform signal.It is to be appreciated that charging control signal
(PWMA) duty ratio is different, and charging duration is different, so as to the euqalizing current of regulating cell group 200.Similarly,
The duty ratio of discharge control signal (PWMB) is different, and the electric discharge duration of battery pack 200 is different, adjustable battery pack 200
Euqalizing current.In this present embodiment, charge-discharge circuit 130 carries out preset mode according to the control signal that controller 110 is sent
Charge and discharge so that the euqalizing current of battery pack 200 be controller 110 determine value.
The battery charging and discharging equalising control device 100 further includes the second detection circuit 140, second detection circuit
140 are electrically connected with the controller 110, and second detection circuit 140 is also electrically connected with battery, second detection circuit
140 for detecting the euqalizing current of battery, and the euqalizing current that will test is sent to controller 110.
Specifically, second detection circuit 140 can be bidirectional shunt monitor U1, pass through bidirectional shunt monitor U1
(port IN- and the port IN+) acquire in real time the voltage (or electric current) on accurate sampling resistor Rs (sampling resistor Rs and battery
Output end electrical connection), the Rs voltage (passing through the port out of U1) of sampling is sent to controller 110, controller 110 calculates
To the electric current flowed through on Rs i.e. euqalizing current (charge or discharge), the controller 110 is according to the euqalizing current life detected
At the control signal of default duty ratio to the charge-discharge circuit 130, for example, if the euqalizing current of detection is greater than predetermined
The duty ratio of low control signal then drops in euqalizing current, to pass through the charge and discharge of 130 regulating cell group 200 of charge-discharge circuit, makes
The euqalizing current of battery pack 200 is maintained at presetting value.The euqalizing current of detection is less than predetermined euqalizing current, then increases
The duty ratio of big control signal makes the equal of battery pack 200 to pass through the charge and discharge of 130 regulating cell group 200 of charge-discharge circuit
Weighing apparatus electric current is maintained at presetting value.The charge-discharge circuit 130 carries out default mould to battery pack 200 according to the control signal
The charge and discharge of formula are so that euqalizing current is the value of setting.
In conclusion a kind of battery charging and discharging equalising control device provided by the utility model.The battery charging and discharging is equal
The control method that weighs is used for the balance charge/discharge of battery pack, which comprises the voltage of detection each battery of battery pack；According to detection
Each battery of battery pack voltage calculate battery pack pressure difference, the pressure difference refer to battery cell ceiling voltage with it is minimum
The difference of voltage；Corresponding euqalizing current is determined according to the range of the pressure difference；Battery is carried out according to the euqalizing current
Equilibrium fill electric discharge, the utility model accomplishes big pressure difference high current equilibrium, small pressure by the adaptive equalization electric currents of different pressure differences
Poor low current is balanced, adjusts in real time, guarantees the optimum state of battery pack, by the utility model, solves echelon using battery
Battery pressure difference problems of too, the effective appearance for mitigating short -board effect.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of battery charging and discharging equalising control device, which is characterized in that the battery charging and discharging equalising control device includes:
First detection circuit, is electrically connected with battery pack, is also electrically connected with the controller, for detecting the electricity of each battery in battery pack
Pressure, and the cell voltage that will test is sent to controller；
Controller is connect with charge-discharge circuit, for confirming corresponding euqalizing current according to cell voltage, and according to the equal of confirmation
The electric current that weighs generates the control signal of default duty ratio to charge-discharge circuit；
Charge-discharge circuit is connect with controller, is also connect with battery pack, pre- for being carried out according to the control signal to battery pack
If the equilibrium of mode fill electric discharge.
2. battery charging and discharging equalising control device as described in claim 1, which is characterized in that the controller is used for according to inspection
The voltage of each battery of the battery pack of survey calculates the pressure difference of battery pack, the pressure difference refer to battery cell ceiling voltage with most
The difference of low-voltage.
3. battery charging and discharging equalising control device as claimed in claim 2, which is characterized in that the controller is used for according to institute
The range for stating pressure difference determines corresponding euqalizing current, specifically includes: when the pressure difference is greater than the first preset pressure value, really
The fixed euqalizing current is the first pre-set current value；
When the pressure difference is less than the first preset pressure value, when being greater than or equal to the second preset pressure value, the balanced electricity is determined
Stream is the second pre-set current value；
When the pressure difference is less than the second preset pressure value, is greater than third preset pressure value, determine that the euqalizing current is the
Three pre-set current values.
4. battery charging and discharging equalising control device as claimed in claim 3, which is characterized in that the first preset pressure value is
150mV, the second preset pressure value are 100mV, and the third preset pressure value is 50mV.
5. battery charging and discharging equalising control device as claimed in claim 3, which is characterized in that first pre-set current value is
5A, second pre-set current value are 4A, and the third pre-set current value is 3A.
6. battery charging and discharging equalising control device as described in claim 1, which is characterized in that the battery charging and discharging equilibrium control
Device processed further includes the second detection circuit, and second detection circuit is electrically connected with the controller, second detection circuit
It is also electrically connected with battery, second detection circuit is used to detect the euqalizing current of battery, and the euqalizing current hair that will test
It send to controller, the controller generates the control signal of default duty ratio to the charge and discharge according to the euqalizing current that detects
Circuit, the charge-discharge circuit carry out the charge and discharge of preset mode so that euqalizing current is to battery pack according to the control signal
The value of setting.
7. battery charging and discharging equalising control device as claimed in claim 6, which is characterized in that second detection circuit includes
Sampling resistor and detector, the sampling resistor are electrically connected with the output end of the battery pack, and the detector is adopted for detecting
The voltage or voltage at sample resistance both ends, and the voltage that will test is sent to controller.
8. battery charging and discharging equalising control device as claimed in claim 7, which is characterized in that the detector is bidirectional shunt
Monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132237.1U CN209104849U (en) | 2018-12-18 | 2018-12-18 | A kind of battery charging and discharging equalising control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132237.1U CN209104849U (en) | 2018-12-18 | 2018-12-18 | A kind of battery charging and discharging equalising control device |
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| CN209104849U true CN209104849U (en) | 2019-07-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600354A (en) * | 2020-06-03 | 2020-08-28 | 桑顿新能源科技(长沙)有限公司 | Grouping protection system for batteries used in echelon and battery pack forming method |
-
2018
- 2018-12-18 CN CN201822132237.1U patent/CN209104849U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600354A (en) * | 2020-06-03 | 2020-08-28 | 桑顿新能源科技(长沙)有限公司 | Grouping protection system for batteries used in echelon and battery pack forming method |
| CN111600354B (en) * | 2020-06-03 | 2021-09-17 | 桑顿新能源科技(长沙)有限公司 | Grouping protection system for batteries used in echelon and battery pack forming method |
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