CN106558899B - Battery pack balance repairing management system - Google Patents
Battery pack balance repairing management system Download PDFInfo
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- CN106558899B CN106558899B CN201710005217.5A CN201710005217A CN106558899B CN 106558899 B CN106558899 B CN 106558899B CN 201710005217 A CN201710005217 A CN 201710005217A CN 106558899 B CN106558899 B CN 106558899B
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- resistor
- triode
- circuit
- battery pack
- balance
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- 230000008439 repair process Effects 0.000 claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 210000004460 N cell Anatomy 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H02J7/0026—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a battery pack balance repair management system, which comprises an acquisition circuit, a processing circuit and a balance repair circuit, wherein the acquisition circuit is used for acquiring a battery pack balance signal; the acquisition circuit is used for acquiring the electric quantity of each battery of the battery pack after the emergency starting power supply successfully starts the automobile and transmitting each acquired electric quantity to the processing circuit; the processing circuit is used for judging whether the difference value between the electric quantity value with the largest numerical value and the electric quantity value with the smallest numerical value in the electric quantities is larger than a safety set value, if so, the balance repairing circuit is started to repair the battery pack, and if not, the balance repairing circuit stops working. The invention detects the reverse charge condition of the battery pack in real time, carries out real-time balance repair on the unbalanced battery pack, furthest reduces the unbalanced condition of the battery pack, ensures that each battery of the battery pack is in the optimal balance state as far as possible, and ensures that a user can work uniformly whether charging or discharging before next use, thereby effectively prolonging the service life of the battery pack.
Description
Technical Field
The invention relates to an emergency starting power supply, in particular to a balance repair management system for a battery pack in the emergency starting power supply.
background
Although a general emergency starting power supply is provided with conventional technologies such as charging shutdown and charging balance, in practical application, the charging damage of a battery pack in the emergency starting power supply is not from a normally configured charging control system of a charging machine to the maximum extent, but the battery pack charging is unbalanced due to the reverse charging of a generator charging system with ultrahigh power of an automobile after the automobile is successfully started, the high-power reverse charging cannot realize balance control, and if the battery pack is directly idle in an unbalanced state or is continuously started for use, the vicious circle of the original battery pack which is not balanced can be accelerated, so that the battery pack is finally prematurely failed and damaged.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention provides a battery pack balance repair management system.
the invention solves the technical problems through the following technical scheme:
the invention provides a battery pack balance repair management system which is characterized by comprising an acquisition circuit, a processing circuit and a balance repair circuit, wherein the acquisition circuit is connected with the processing circuit;
The acquisition circuit is used for acquiring the electric quantity of each battery of the battery pack in the emergency starting power supply after the emergency starting power supply successfully starts the automobile, and transmitting each acquired electric quantity to the processing circuit;
the processing circuit is used for judging whether the difference value between the electric quantity value with the largest numerical value and the electric quantity value with the smallest numerical value in the received electric quantities is larger than a safety set value or not, if so, the balance repairing circuit is called to repair the battery pack, and if not, the balance repairing circuit stops working.
Preferably, the battery pack is provided with N batteries which are connected in series, and the balance repair circuit comprises N sub-balance repair circuits which correspond to the N batteries one by one;
Each sub-balance repairing circuit in the front (N-1) sub-balance repairing circuits comprises a first triode, a second triode, a first resistor, a second resistor and a third resistor;
the emitting electrode of the second triode is electrically connected with the positive electrode of one battery in the first (N-1) batteries, the collector electrode of the second triode is electrically connected with the battery electrically connected with the negative electrode of the battery through the third resistor, the base electrode of the second triode is electrically connected with the collector electrode of the first triode through the first resistor, the emitting electrode of the first triode is grounded, and the base electrode of the first triode is electrically connected with the processing circuit through the second resistor;
The Nth sub-balance repairing circuit comprises a fourth resistor, a third triode and a fifth resistor;
The collector of the third triode is electrically connected with the anode of the Nth battery through the fourth resistor, the emitter of the third triode is grounded, and the base of the third triode is electrically connected with the processing circuit through the fifth resistor;
The processing circuit is used for starting the battery with the maximum electric quantity value to discharge through the corresponding sub-balance restoration circuit when the difference value is larger than the safety set value.
Preferably, the acquisition circuit comprises N sub-acquisition circuits and a main switch circuit, which are in one-to-one correspondence with the N batteries;
each sub-acquisition circuit in the first (N-1) sub-acquisition circuits comprises a fourth triode, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, an operational amplifier, a tenth resistor, a first capacitor and an eleventh resistor;
one end of a collector of the fourth triode and one end of the sixth resistor are both electrically connected with the anode of one of the first (N-1) batteries, an emitter of the fourth triode is electrically connected with the positive input end of the operational amplifier through the seventh resistor and is grounded through the seventh resistor and the ninth resistor, the other end of the sixth resistor is respectively electrically connected with the base of the fourth triode and the master switch circuit, the negative input end of the operational amplifier is electrically connected with the battery electrically connected with the cathode of the battery through the eighth resistor and is also electrically connected with the output end of the operational amplifier through the tenth resistor, the output end of the operational amplifier is electrically connected with the processing circuit through the eleventh resistor, and the output end is also grounded through the eleventh resistor and the first capacitor;
The Nth sub-acquisition circuit comprises a fifth triode, a twelfth resistor and a second capacitor;
the collector electrode of the fifth triode is electrically connected with the anode of the Nth battery, the base electrode of the fifth triode is electrically connected with the main switch circuit, and the emitter electrode of the fifth triode is electrically connected with the processing circuit through the twelfth resistor and is grounded through the twelfth resistor and the second capacitor.
Preferably, the main switch circuit includes a thirteenth resistor, a sixth triode and a fourteenth resistor;
The collector of the sixth triode is electrically connected with the base of the fifth triode through the thirteenth resistor, the emitter of the sixth triode is grounded, and the base of the sixth triode is electrically connected with the processing circuit through the fourteenth resistor;
The processing circuit is used for controlling the conduction of the sixth triode after the emergency starting power supply successfully starts the automobile, so that the triodes in each sub-acquisition circuit are conducted, and the acquisition circuit is started.
Preferably, the battery pack balance repair management system further includes a charge and discharge control circuit for controlling charging or discharging of the battery pack.
preferably, the battery pack balance repair management system further comprises a temperature sensor, wherein the temperature sensor is used for detecting the temperature of the battery pack and transmitting the temperature value to the processing circuit;
the processing circuit is used for judging whether the temperature value is in a safe temperature range after the difference value is larger than the safe set value, stopping the balance repairing circuit to work if the temperature value is not in the safe temperature range, and restarting the balance repairing circuit if the temperature value is not in the safe temperature range.
on the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
the invention detects the reverse charging condition of the battery pack in real time after the emergency starting power supply successfully starts the automobile, collects the electric quantity of each battery, and carries out real-time balance repair on the unbalanced battery pack, thereby furthest reducing the unbalance of the battery pack, enabling each battery of the battery pack to be in the best balance state at any time as far as possible, and enabling a user to uniformly work no matter whether the battery is charged or discharged before the next use, thereby effectively prolonging the service life of the battery pack.
Drawings
fig. 1 is a block diagram of a battery pack balance repair management system according to a preferred embodiment of the present invention.
Fig. 2 is a circuit diagram of a battery pack according to a preferred embodiment of the present invention.
Fig. 3 is a circuit diagram of a balance repair circuit and an acquisition circuit according to a preferred embodiment of the invention.
Fig. 4 is a circuit diagram of a charge and discharge control circuit according to a preferred embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the present embodiment provides a battery pack balance repair management system, which includes an acquisition circuit 1, a charge and discharge control circuit 2, a CPU processing circuit 3, and a balance repair circuit 4.
The CPU processing circuit 3 is electrically connected with the acquisition circuit 1, the charge and discharge control circuit 2 and the balance repair circuit 4 respectively, and the acquisition circuit 1, the charge and discharge control circuit 2 and the balance repair circuit 4 are electrically connected with a battery pack 5 in an emergency starting power supply.
the main realization function is to automatically continue balance repair of unbalance of the battery pack caused by each charge and discharge of an emergency starting power supply, and the key point is to repair unbalance of the battery pack caused by ultrahigh power charging reversely charged by an automobile generator charging system after an automobile is successfully started, so that the battery pack can reach the optimal balance state before each use.
The functions of the above circuits are described in detail below:
The CPU processing circuit 3 is used for starting the acquisition circuit 1 to work after the emergency starting power supply successfully starts the automobile.
The acquisition circuit 1 is configured to acquire an electric quantity of each battery of the battery pack 5 in the emergency starting power supply, and transmit each acquired electric quantity to the CPU processing circuit 3.
the CPU processing circuit 3 is configured to determine whether a difference between a largest electric quantity value and a smallest electric quantity value among the received electric quantities is greater than a safety setting value, if so, start the balance repairing circuit 4 to repair the battery pack, and if not, stop the balance repairing circuit 4.
The charge and discharge control circuit 2 is used to control the charging or discharging of the battery pack.
Specifically, the battery pack 5 is formed by connecting N batteries in series, and the specific circuit is as shown in fig. 2, i.e., BAT-1+ BAT-2+ BAT-3+ - - - + BAT-N. The battery pack 5 may be a lead-acid battery, or a lithium battery or other new energy batteries.
as shown in fig. 3, the balance repair circuit includes N sub-balance repair circuits corresponding to the N cells one to one.
Each sub-balance repair circuit in the front (N-1) sub-balance repair circuits comprises a first triode, a second triode, a first resistor, a second resistor and a third resistor.
the emitting electrode of the second triode is electrically connected with the positive electrode of one battery in the first (N-1) batteries, the collecting electrode of the second triode is electrically connected with the battery electrically connected with the negative electrode of the battery through the third resistor, the base electrode of the second triode is electrically connected with the collecting electrode of the first triode through the first resistor, and the emitting electrode of the first triode is grounded and the base electrode of the first triode is electrically connected with the processing circuit through the second resistor.
the Nth sub-balance repair circuit comprises a fourth resistor, a third triode and a fifth resistor.
The collector of the third triode is electrically connected with the anode of the Nth battery through the fourth resistor, the emitter of the third triode is grounded, and the base of the third triode is electrically connected with the processing circuit through the fifth resistor.
the processing circuit is used for starting the battery with the maximum electric quantity value to discharge through the corresponding sub-balance restoration circuit when the difference value is larger than the safety set value.
Referring to fig. 3, resistors R2, R3 and R4, a transistor Q1, Q2, Q3, resistors R5, R6, R7, R8 and R9, and transistors Q11, Q12, Q13 and Q4 form a balance repair circuit.
the other electronic components in fig. 3 constitute the acquisition circuit. The acquisition circuit comprises N sub-acquisition circuits and a main switch circuit, wherein the N sub-acquisition circuits correspond to the N batteries one by one.
each sub-acquisition circuit in the first (N-1) sub-acquisition circuits comprises a fourth triode, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, an operational amplifier, a tenth resistor, a first capacitor and an eleventh resistor.
One end of a collector of the fourth triode and one end of the sixth resistor are both electrically connected with the anode of one of the first (N-1) batteries, an emitter of the fourth triode is electrically connected with the positive input end of the operational amplifier through the seventh resistor and is grounded through the seventh resistor and the ninth resistor, the other end of the sixth resistor is respectively electrically connected with the base of the fourth triode and the master switch circuit, the negative input end of the operational amplifier is electrically connected with the battery electrically connected with the cathode of the battery through the eighth resistor and is also electrically connected with the output end of the operational amplifier through the tenth resistor, the output end of the operational amplifier is electrically connected with the processing circuit through the eleventh resistor, and the output end is also grounded through the eleventh resistor and the first capacitor.
The Nth sub-acquisition circuit comprises a fifth triode, a twelfth resistor and a second capacitor.
The collector electrode of the fifth triode is electrically connected with the anode of the Nth battery, the base electrode of the fifth triode is electrically connected with the main switch circuit, and the emitter electrode of the fifth triode is electrically connected with the processing circuit through the twelfth resistor and is grounded through the twelfth resistor and the second capacitor.
The main switch circuit comprises a thirteenth resistor, a sixth triode and a fourteenth resistor.
the collector of the sixth triode is electrically connected with the base of the fifth triode through the thirteenth resistor, the emitter of the sixth triode is grounded, and the base of the sixth triode is electrically connected with the processing circuit through the fourteenth resistor.
The processing circuit is used for controlling the conduction of the sixth triode after the emergency starting power supply successfully starts the automobile, so that the triodes in each sub-acquisition circuit are conducted, and the acquisition circuit is started.
As shown in fig. 4, the charge/discharge control circuit 2 includes a charging loop that is turned on and off, and a high current start loop that is turned on and off, so as to ensure that the battery pack is not overcharged or overdischarged during any use. The charging system switch control circuit comprises resistors R13, R14, R43, R44, a triode Q6, a Q14, a diode D1 and the like, and is in a conventional configuration. The resistors R45, R47, the capacitor C1 and the like form a charger access information acquisition circuit and transmit the charger access information acquisition circuit to the CPU processing circuit 3. R18, R50, D2, D7, Q15, K1 and the like form a charging and discharging control loop for large-current starting, and the control loop can realize large-current switching-on required by automobile starting and automatic switching-off control and the like when the automobile is reversely charged and is too high.
in summary, the present invention has the following functions:
1. The battery pack balance repairing management system is utilized to constantly monitor the health state of any battery in the battery pack, and unbalanced battery packs caused after each charge and discharge are timely and balance repaired, so that the battery packs are constantly kept in the optimal balance state.
2. After each time of emergency rescue is successful, the battery pack balance repair management system can automatically carry out continuous balance repair on the unbalanced battery pack no matter whether the user continues to use the battery pack or not, so that the user does not worry about the problem of unbalance caused by charging and discharging of the battery pack.
3. when the reverse charge of the automobile is too high, the connection with the automobile is automatically cut off, when the electric quantity of any battery is too low, the balance repair is automatically stopped, the battery is ensured not to be over discharged, the repair time is automatically prolonged in an idle state, and the system is automatically closed to save energy when the battery is overtime.
4. When the difference between the highest electricity-saving quantity and the lowest electricity-saving quantity in the battery pack is smaller than a safety set value, the balance restoration is automatically stopped.
5. When the temperature of the battery is overhigh, the system automatically stops the balance repair, and when the temperature of the battery is reduced to a safe range, the balance repair is restored again.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (5)
1. A battery pack balance repair management system is characterized by comprising an acquisition circuit, a processing circuit and a balance repair circuit;
The acquisition circuit is used for acquiring the electric quantity of each battery of the battery pack in the emergency starting power supply after the emergency starting power supply successfully starts the automobile, and transmitting each acquired electric quantity to the processing circuit;
The processing circuit is used for judging whether the difference value between the electric quantity value with the largest numerical value and the electric quantity value with the smallest numerical value in the received electric quantities is larger than a safety set value or not, if so, the balance repairing circuit is called to repair the battery pack, and if not, the balance repairing circuit stops working;
the battery pack is provided with N batteries which are connected in series, and the balance repair circuit comprises N sub-balance repair circuits which correspond to the N batteries one by one;
Each sub-balance repairing circuit in the first N-1 sub-balance repairing circuits comprises a first triode, a second triode, a first resistor, a second resistor and a third resistor;
the emitting electrode of the second triode is electrically connected with the positive electrode of one battery in the first N-1 batteries, the collector electrode of the second triode is electrically connected with the battery electrically connected with the negative electrode of the battery through the third resistor, the base electrode of the second triode is electrically connected with the collector electrode of the first triode through the first resistor, the emitting electrode of the first triode is grounded, and the base electrode of the first triode is electrically connected with the processing circuit through the second resistor;
The Nth sub-balance repairing circuit comprises a fourth resistor, a third triode and a fifth resistor;
The collector of the third triode is electrically connected with the anode of the Nth battery through the fourth resistor, the emitter of the third triode is grounded, and the base of the third triode is electrically connected with the processing circuit through the fifth resistor;
The processing circuit is used for starting the battery with the maximum electric quantity value to discharge through the corresponding sub-balance restoration circuit when the difference value is larger than the safety set value.
2. The battery pack balance repair management system according to claim 1, wherein the acquisition circuit includes N sub-acquisition circuits and a main switch circuit that correspond one-to-one to the N batteries;
each sub-acquisition circuit in the first N-1 sub-acquisition circuits comprises a fourth triode, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, an operational amplifier, a tenth resistor, a first capacitor and an eleventh resistor;
a collector of the fourth triode and one end of the sixth resistor are both electrically connected with a positive electrode of one of the first N-1 batteries, an emitter of the fourth triode is electrically connected with a positive input end of the operational amplifier through the seventh resistor and is grounded through the seventh resistor and the ninth resistor, the other end of the sixth resistor is respectively electrically connected with a base electrode of the fourth triode and the master switch circuit, a negative input end of the operational amplifier is electrically connected with a battery electrically connected with a negative electrode of the battery through the eighth resistor, a negative input end of the operational amplifier is also electrically connected with an output end of the operational amplifier through a tenth resistor, an output end of the operational amplifier is electrically connected with the processing circuit through the eleventh resistor, and an output end of the operational amplifier is also grounded through the eleventh resistor and the first capacitor;
the Nth sub-acquisition circuit comprises a fifth triode, a twelfth resistor and a second capacitor;
the collector electrode of the fifth triode is electrically connected with the anode of the Nth battery, the base electrode of the fifth triode is electrically connected with the main switch circuit, and the emitter electrode of the fifth triode is electrically connected with the processing circuit through the twelfth resistor and is grounded through the twelfth resistor and the second capacitor.
3. the battery pack balance repair management system according to claim 2, wherein the main switch circuit includes a thirteenth resistor, a sixth transistor, and a fourteenth resistor;
The collector of the sixth triode is electrically connected with the base of the fifth triode through the thirteenth resistor, the emitter of the sixth triode is grounded, and the base of the sixth triode is electrically connected with the processing circuit through the fourteenth resistor;
The processing circuit is used for controlling the conduction of the sixth triode after the emergency starting power supply successfully starts the automobile, so that the triodes in each sub-acquisition circuit are conducted, and the acquisition circuit is started.
4. The battery pack balance repair management system according to claim 1, further comprising a charge and discharge control circuit for controlling charging or discharging of the battery pack.
5. The battery pack balancing repair management system according to claim 1, further comprising a temperature sensor for detecting a temperature of the battery pack and transmitting the temperature value to the processing circuit;
The processing circuit is used for judging whether the temperature value is in a safe temperature range after the difference value is larger than the safe set value, stopping the balance repairing circuit to work if the temperature value is not in the safe temperature range, and restarting the balance repairing circuit if the temperature value is not in the safe temperature range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005217.5A CN106558899B (en) | 2017-01-04 | 2017-01-04 | Battery pack balance repairing management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005217.5A CN106558899B (en) | 2017-01-04 | 2017-01-04 | Battery pack balance repairing management system |
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| CN106558899A CN106558899A (en) | 2017-04-05 |
| CN106558899B true CN106558899B (en) | 2019-12-06 |
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| CN201710005217.5A Active CN106558899B (en) | 2017-01-04 | 2017-01-04 | Battery pack balance repairing management system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111497684A (en) * | 2019-01-31 | 2020-08-07 | 北京新能源汽车股份有限公司 | Power battery system, repairing method and device thereof, BMS (battery management system) and automobile |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2880995B1 (en) * | 2005-01-14 | 2007-04-06 | Pellenc Sa | METHOD FOR BALANCED LOADING OF LITHIUM-ION OR POLYMER LITHIUM BATTERY |
| PL2092627T3 (en) * | 2006-11-10 | 2018-10-31 | Lithium Balance A/S | A battery management system |
| CN102148519A (en) * | 2011-03-31 | 2011-08-10 | 杭州高特电子设备有限公司 | Automatic equalization method and circuit for battery pack |
| CN102522798B (en) * | 2011-12-30 | 2014-01-08 | 深圳桑达国际电子器件有限公司 | Method for realizing active equalization among battery pack modules and circuit |
| CN104505912A (en) * | 2015-01-15 | 2015-04-08 | 中国科学技术大学 | Power lithium battery pack passive equalization system with temperature detection function |
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Address after: 201109 floor 1-2, building 1, No. 18, Lane 4916, Hongmei South Road, Minhang District, Shanghai Patentee after: SHANGHAI POWER STATION Co.,Ltd. Address before: 200241 building 3, No.18 Lane 4916, Hongmei South Road, Minhang District, Shanghai Patentee before: SHANGHAI POWER STATION Co.,Ltd. |
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