CN211957833U - Battery equalization repairing system - Google Patents
Battery equalization repairing system Download PDFInfo
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- CN211957833U CN211957833U CN202020794060.6U CN202020794060U CN211957833U CN 211957833 U CN211957833 U CN 211957833U CN 202020794060 U CN202020794060 U CN 202020794060U CN 211957833 U CN211957833 U CN 211957833U
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- 238000001514 detection method Methods 0.000 claims abstract description 50
- 239000000178 monomer Substances 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 25
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 19
- 230000008439 repair process Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a battery equalization repairing system, which comprises a battery pack, a main control module, an electric quantity detection chip, a stop switch and a bidirectional DC/DC module; the battery pack is connected with the electric quantity detection chip and the voltage detection module; each battery monomer in the battery pack is respectively connected with a cut-off switch, the bidirectional DC/DC module is connected with the battery pack through the cut-off switch, the bidirectional DC/DC module is respectively connected with the charging circuit or the discharging circuit, the charging circuit and the discharging circuit are connected or disconnected with the battery pack, and the main control module is connected with the electric quantity detection chip, the voltage detection module, each cut-off switch, the bidirectional DC/DC module, the charging circuit and the discharging circuit. The utility model discloses according to capacity difference or voltage difference between the battery, carry out balanced restoration to the battery, make the great free electric current of battery of difference flow to other battery monomer through two-way DC/DC module, restore the difference between the battery effectively, improved group battery performance and cycle life.
Description
Technical Field
The utility model belongs to the technical field of the battery is balanced, particularly, relate to a balanced repair system of battery.
Background
The battery is used as a power source, the performance of the battery pack is good, and whether the maintenance measures are proper or not are important factors directly determining the service life and the use safety of the battery pack. Batteries are usually connected in series and in parallel to meet the requirements of voltage and energy storage capacity, and due to the fact that the internal structure and the working environment of the batteries are different, after the battery pack is used for a period of time, the state difference between single batteries gradually appears, the single batteries are under-charged, over-charged and over-discharged, the performance and the service life of the battery pack are affected, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model aims to provide a battery equalization repairing system to overcome the defects in the prior art.
In order to achieve the above object, the utility model provides a battery equalization repair system, which comprises a battery pack, a main control module, an electric quantity detection chip, a charging circuit, a discharging circuit, a cut-off switch, a voltage detection module and a bidirectional DC/DC module; the battery pack is electrically connected with the electric quantity detection chip, and the electric quantity detection chip is electrically connected with the main control module and is in signal connection, so that the electric quantity detection chip acquires the electric quantity value of each battery monomer in the battery pack and transmits the electric quantity values of all the battery monomers to the main control module; the battery pack is electrically connected with the voltage detection module, and the voltage detection module is electrically connected with the main control module and is in signal connection, so that the voltage detection module acquires the voltage value of each battery monomer in the battery pack and transmits the voltage values of all the battery monomers to the main control module; each battery monomer in the battery pack is respectively connected with a cut-off switch, and each cut-off switch is electrically connected and in signal connection with the main control module so as to enable each cut-off switch to be in forward conduction charging or reverse conduction discharging according to a switch signal of the main control module; the battery pack is respectively electrically connected with the charging circuit and the discharging circuit, and the charging circuit and the discharging circuit are respectively electrically connected with the main control module and in signal connection, so that the main control module controls the charging circuit or the discharging circuit to be connected with or disconnected from the battery pack according to the electric quantity values or the voltage values of all the battery monomers; the bidirectional DC/DC module is connected with the battery pack through the cut-off switch and is respectively connected with the charging circuit or the discharging circuit, so that the bidirectional DC/DC module balances the electric quantity of each battery monomer in the battery pack.
Through the technical scheme, detect the free electric quantity of battery through the electric quantity detection chip, voltage detection module detects the free voltage of battery, and according to capacity difference or voltage difference between the battery, carry out balanced restoration at the charging or discharge in-process to the battery, to the great battery monomer of difference through cutoff switch with its forward conduction charge or reverse conduction discharge, make the great free current flow of battery of difference other battery monomer through two-way DC/DC module, can restore the difference between the battery effectively, the group battery performance has been improved, security performance and cycle life.
As right the balanced repair system of battery further explain, preferably, when host system judged that the group battery was in low electric quantity state, host system control charging circuit switched on with the group battery to and host system control each switched on charging by the switch forward.
Through the technical scheme, the battery pack is charged.
As right battery equalization repair system's further explanation, preferably, main control module judges when the free electric quantity difference of battery that has the battery monomer of maximum electric quantity and minimum electric quantity is greater than the default in the group battery, perhaps when the voltage difference value between the battery monomer is greater than the default, main control module controls in proper order with maximum electric quantity or maximum voltage's the free battery be connected by the switch reverse switch-on discharge, main control module control discharge circuit switches on simultaneously, reverse switch-on discharge's the free electric current of battery passes through two-way DC/DC module flow direction other battery monomers.
Through the technical scheme, the reverse conduction discharge of the cut-off switch of the battery monomer with the electric quantity difference or the voltage difference is controlled in the charging process, the electric quantity difference between the battery monomers is reduced through the bidirectional DC/DC module flowing to other battery monomers, and the overcharge of the battery monomer with the maximum electric quantity is avoided.
As right battery equalization repair system further explain, preferably, when host system judged that the group battery was in high electric quantity state, and host system judged that the battery monomer that has the maximum electric quantity in the group battery and the free electric quantity difference of battery of minimum electric quantity was greater than the default, host system control and the free switch reverse conduction of ending of being connected of the battery of maximum electric quantity discharged, host system control discharge circuit switched on simultaneously, reverse conduction discharged free electric current of battery passed through two-way DC/DC module flow direction other battery monomers.
Through the technical scheme, the reverse conduction discharge of the cut-off switches of the battery monomers with the electric quantity difference or the voltage difference is controlled, and the battery monomers with the minimum electric quantity are prevented from being over-discharged by flowing to other battery monomers through the bidirectional DC/DC module.
As right the balanced repair system of battery further explain, preferably, when host system judged that the group battery was in high electric quantity state, host system timing control discharge circuit switched on with the group battery.
Through the technical scheme, the battery pack is discharged so as to activate the activity of the battery pack.
As right battery balance repair system's further explanation, preferably, still include temperature detection module, temperature detection module is connected with the group battery, and temperature detection module is connected and signal connection with the host system electricity to make temperature detection module detect the temperature of group battery in the balanced in-process of electric quantity, and transmit the temperature of group battery to host system, host system is when the temperature exceedes the default, control charging circuit or discharge circuit and group battery disconnection.
Through the technical scheme, the safety of the battery pack is ensured.
The utility model has the advantages that: the utility model discloses an electric quantity detection chip detects free electric quantity of battery, voltage detection module detects free voltage of battery, and according to capacity difference or voltage difference between the battery, charge or discharge the in-process to the battery and carry out balanced restoration, to the great battery monomer of difference through the cut-off switch with its forward conduction charge or reverse conduction discharge, make the great free electric current of battery of difference flow to other battery monomers through two-way DC/DC module, can restore the difference between the battery effectively, avoid the free overcharge of the battery of the biggest electric quantity or the free overdischarge of battery of minimum electric quantity, the group battery performance has been improved, the security performance and cycle life.
Drawings
Fig. 1 is a schematic structural diagram of the battery equalization repairing system of the present invention.
Detailed Description
In order to further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention.
First, please refer to fig. 1, fig. 1 is a schematic structural diagram of a battery equalization repairing system according to the present invention. As shown in fig. 1, the utility model discloses a battery equalization repair system, including group battery 1, main control module 2, electric quantity detection chip 3, charging circuit 4, discharge circuit 5, stop switch 6, voltage detection module 8 and two-way DC/DC module 9; the battery pack 1 is electrically connected with the electric quantity detection chip 3, and the electric quantity detection chip 3 is electrically connected with the main control module 2 and is in signal connection, so that the electric quantity detection chip 3 acquires the electric quantity value of each battery monomer in the battery pack 1 and transmits the electric quantity values of all the battery monomers to the main control module 2; the battery pack 1 is electrically connected with the voltage detection module 8, and the voltage detection module 8 is electrically connected with the main control module 2 and is in signal connection, so that the voltage detection module 8 acquires the voltage value of each battery monomer in the battery pack 1 and transmits the voltage values of all the battery monomers to the main control module 2; each battery monomer in the battery pack 1 is respectively connected with a cut-off switch 6, and each cut-off switch 6 is electrically connected and in signal connection with the main control module 2, so that each cut-off switch 6 is switched on or off according to a switching signal of the main control module 2; the battery pack 1 is respectively electrically connected with the charging circuit 4 and the discharging circuit 5, and the charging circuit 4 and the discharging circuit 5 are respectively electrically connected with the main control module 2 and in signal connection, so that the main control module 2 controls the charging circuit 4 or the discharging circuit 5 to be in forward conduction charging or disconnection and reverse conduction discharging with the battery pack 1 according to the electric quantity of all the battery monomers. The main control module 2 is controlled by a common chip in the prior art, such as a single chip microcomputer with the model of STC89C52, the electric quantity detection chip 3 is a common chip in the prior art, such as the model BQ27510 and the model LTC2942, the charging circuit 4 is a common device in the prior art, such as the model TP4056, which can charge the battery, the discharging circuit 5 is a common device in the prior art, such as the model MAX8731, which can discharge the battery, the cut-off switch 6 is formed by MOS transistors in the prior art, the voltage detection module 8 is a common device in the prior art, such as the model HVD100, which can detect the voltage of the battery, and the bidirectional DC/DC module 9 is obtained in the prior art.
Above-mentioned structure passes through electric quantity detection chip and detects the free electric quantity of battery, voltage detection module detects the free voltage of battery, and according to capacity difference or voltage difference between the battery, carry out balanced restoration at the charging or discharge in-process to the battery, to the great battery monomer of difference through the cut-off switch with its forward conduction charge or reverse conduction discharge, make the great free electric current of battery of difference flow to other battery monomers through two-way DC/DC module, can restore the difference between the battery effectively, the group battery performance has been improved, security performance and cycle life.
When the main control module 2 determines that the battery pack 1 is in a low power state, it is satisfied that more than two thirds of the battery cells are in a low power state or adjusted according to actual conditions, which is preset by the main control module 2, the main control module 2 controls the charging circuit 4 to be conducted with the battery pack 1, and the main control module 2 controls each cut-off switch) to conduct and charge in the forward direction, so as to charge the battery pack 1. If the main control module 2 determines that the difference between the electric quantities of the battery cell with the maximum electric quantity and the battery cell with the minimum electric quantity in the battery pack 1 is greater than the preset value, or the voltage difference value between the battery cells is greater than the preset value, the main control module 2 sequentially controls the cut-off switch 6 connected with the battery cell with the maximum electric quantity or the maximum voltage to be turned on and discharged in the reverse direction, meanwhile, the main control module 2 controls the discharge circuit 5 to be turned on, the current of the battery cell which is turned on and discharged in the reverse direction flows to other battery cells through the bidirectional DC/DC module 9, when the difference between the electric quantities of the two battery cells which are compared with each other is less than the preset value, the cut-off switch 6 is turned on and charged in the forward direction, the discharge circuit 5 is turned off, so that the reverse conduction and discharge of the cut-off switch of the battery, the electric quantity difference between the battery cells is reduced, and the overcharge of the battery cell with the maximum electric quantity is avoided.
When the main control module 2 judges that the battery pack 1 is in a high-power state, not only more than two thirds of the battery monomers are in high power or adjusted according to the actual situation, which is preset by the main control module 2, and the main control module 2 judges that the difference between the electric quantity of the battery cell with the maximum electric quantity and the electric quantity of the battery cell with the minimum electric quantity in the battery pack 1 is larger than the preset value, the main control module 2 controls the cut-off switch 6 connected with the battery cell with the maximum electric quantity to conduct and discharge reversely, meanwhile, the main control module 2 controls the discharge circuit 5 to be conducted, the current of the battery monomer which is conducted and discharged in the reverse direction flows to other battery monomers through the bidirectional DC/DC module 9, so as to realize reverse conducting discharge by controlling the cut-off switches of the battery cells with electric quantity difference or voltage difference, and the battery cell with the minimum electric quantity is prevented from being over-discharged by flowing to other battery cells through the bidirectional DC/DC module.
In addition, when the main control module 2 determines that the battery pack 1 is in a high power state, the main control module 2 controls the discharging circuit 5 to be conducted with the battery pack 1 at regular time, so as to discharge the battery pack 1, so as to activate the activity of the battery pack 1.
As shown in fig. 1, the battery equalization repairing system further includes a temperature detection module 7, the temperature detection module 7 is connected to the battery pack 1, and the temperature detection module 7 is electrically connected and in signal connection with the main control module 2, so that the temperature detection module 7 detects the temperature of the battery pack 1 in the power equalization process, and transmits the temperature of the battery pack 1 to the main control module 2, and when the temperature of the main control module 2 exceeds a preset value, the main control module controls the charging circuit 4 or the discharging circuit 5 to be disconnected from the battery pack 1, so as to ensure the safety of the battery pack 1. The temperature detection module 7 is a module for detecting the temperature of the battery, which is commonly used in the art.
It should be noted that the above mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be interpreted as limiting the scope of the present invention. Various modifications, equivalent substitutions and improvements will occur to those skilled in the art and are intended to be within the spirit and scope of the present invention. The protection scope of the present invention is subject to the appended claims.
Claims (6)
1. A battery equalization repairing system is characterized by comprising a battery pack (1), a main control module (2), an electric quantity detection chip (3), a charging circuit (4), a discharging circuit (5), a cut-off switch (6), a voltage detection module (8) and a bidirectional DC/DC module (9); wherein,
the battery pack (1) is electrically connected with the electric quantity detection chip (3), and the electric quantity detection chip (3) is electrically connected with the main control module (2) and is in signal connection, so that the electric quantity detection chip (3) acquires the electric quantity value of each battery monomer in the battery pack (1) and transmits the electric quantity values of all the battery monomers to the main control module (2);
the battery pack (1) is electrically connected with the voltage detection module (8), and the voltage detection module (8) is electrically connected with the main control module (2) and is in signal connection, so that the voltage detection module (8) acquires the voltage value of each battery monomer in the battery pack (1) and transmits the voltage values of all the battery monomers to the main control module (2);
each battery monomer in the battery pack (1) is respectively connected with a cut-off switch (6), and each cut-off switch (6) is electrically connected and in signal connection with the main control module (2) so that each cut-off switch (6) is in forward conduction charging or reverse conduction discharging according to a switch signal of the main control module (2);
the battery pack (1) is respectively electrically connected with the charging circuit (4) and the discharging circuit (5), the charging circuit (4) and the discharging circuit (5) are respectively electrically connected with the main control module (2) and in signal connection, so that the main control module (2) controls the charging circuit (4) or the discharging circuit (5) to be connected with or disconnected from the battery pack (1) according to the electric quantity values or voltage values of all the battery monomers;
the bidirectional DC/DC module (9) is connected with the battery pack (1) through the cut-off switch (6), and the bidirectional DC/DC module (9) is respectively connected with the charging circuit (4) or the discharging circuit (5), so that the bidirectional DC/DC module (9) balances the electric quantity of each battery cell in the battery pack (1).
2. The battery equalization repair system according to claim 1, wherein when the main control module (2) determines that the battery pack (1) is in the low-battery state, the main control module (2) controls the charging circuit (4) to be conducted with the battery pack (1), and the main control module (2) controls each cut-off switch (6) to be conducted and charged forward.
3. The battery equalization repair system according to claim 2, wherein the main control module (2) determines that the difference between the electric quantities of the battery cell with the maximum electric quantity and the battery cell with the minimum electric quantity in the battery pack (1) is greater than a preset value, or the voltage difference between the battery cells is greater than a preset value, the main control module (2) sequentially controls the cut-off switch (6) connected with the battery cell with the maximum electric quantity or the maximum voltage to conduct and discharge in the reverse direction, and meanwhile, the main control module (2) controls the discharge circuit (5) to conduct, and the current of the battery cell conducting and discharging in the reverse direction flows to other battery cells through the bidirectional DC/DC module (9).
4. The battery equalization repair system according to claim 1, wherein when the main control module (2) determines that the battery pack (1) is in a high power state, and when the main control module (2) determines that the power difference between the battery cell with the maximum power and the battery cell with the minimum power in the battery pack (1) is greater than a preset value, the main control module (2) controls the cut-off switch (6) connected to the battery cell with the maximum power to conduct and discharge in the reverse direction, and at the same time, the main control module (2) controls the discharge circuit (5) to conduct, and the current of the battery cell conducting and discharging in the reverse direction flows to other battery cells through the bidirectional DC/DC module (9).
5. The battery equalization repair system according to claim 1, wherein when the main control module (2) determines that the battery pack (1) is in the high-power state, the main control module (2) controls the discharge circuit (5) to be conducted with the battery pack (1) at regular time.
6. The battery equalization repair system according to claim 1, further comprising a temperature detection module (7), wherein the temperature detection module (7) is connected with the battery pack (1), and the temperature detection module (7) is electrically connected and in signal connection with the main control module (2), so that the temperature detection module (7) detects the temperature of the battery pack (1) during the power equalization process and transmits the temperature of the battery pack (1) to the main control module (2), and the main control module (2) controls the charging circuit (4) or the discharging circuit (5) to be disconnected from the battery pack (1) when the temperature exceeds a preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794060.6U CN211957833U (en) | 2020-05-13 | 2020-05-13 | Battery equalization repairing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794060.6U CN211957833U (en) | 2020-05-13 | 2020-05-13 | Battery equalization repairing system |
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| CN211957833U true CN211957833U (en) | 2020-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024851A1 (en) * | 2021-08-23 | 2023-03-02 | 深圳市道通科技股份有限公司 | Battery equalization method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024851A1 (en) * | 2021-08-23 | 2023-03-02 | 深圳市道通科技股份有限公司 | Battery equalization method and system |
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