CN202405819U - Intelligent charge-discharge management module for lead acid storage battery - Google Patents
Intelligent charge-discharge management module for lead acid storage battery Download PDFInfo
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- CN202405819U CN202405819U CN 201120553669 CN201120553669U CN202405819U CN 202405819 U CN202405819 U CN 202405819U CN 201120553669 CN201120553669 CN 201120553669 CN 201120553669 U CN201120553669 U CN 201120553669U CN 202405819 U CN202405819 U CN 202405819U
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Abstract
The utility model discloses an intelligent charge-discharge management module for a lead acid storage battery. The intelligent charge-discharge management module comprises a step-down power supply unit for powering a main control chip, a temperature detection unit for detecting the temperature of single batteries and outputting a temperature signal, a voltage detection unit for detecting the voltage of a single battery and outputting a voltage signal, a single control unit for charging control of the single battery, and the main control chip for receiving the temperature signal and the voltage signal, outputting a control signal to the single control unit, achieving charging control of the single battery and controlling the charge-discharge of an integral battery pack. The management module provided by the utility model corrects the charging voltage through detecting the batteries and environmental temperatures, achieves charging control of the single batteries through the single control unit, eliminates the difference between the single batteries, avoids over-charge and over-discharge through charge-discharge control of the integral battery pack, and has significance on prolonging the service life of the batteries.
Description
Technical field
The utility model relates to lead acid accumulator control technology field, relates in particular to a kind of lead-acid batteries and discharges and recharges the intelligent management module.
Background technology
Present lead acid accumulator, because improper use tends to cause battery life not reach the expection requirement, principal element has:
Stop discharge when discharging into what degree in (1) depth of discharge, i.e. use process,, in the time of can not effectively controlling discharge, can make the battery over-discharge can, badly influence the useful life of battery when control point skew or fault take place the discharge off control circuit.
(2) influence of discharge current density; Normal discharging current should be in the maximum discharge current scope that this battery allows; If discharging current can be accelerated the loose of anode brown lead oxide and come off above the maximum discharge current that this battery allows, thereby have influence on the useful life of battery.
(3) degree affect of overcharging, higher when the charging voltage of charger, battery has a large amount of gases to separate out when overcharging, and at this moment the positive plate active material suffers the impact of gas, and this impact can promote that active material comes off; In addition, positive grid alloy also suffers serious anodic oxidation and corrodes; On the other hand, when surpassing certain pressure, gas can discharge, and the dehydration of battery also can increase; Overcharging in addition to make internal temperature of battery raise, and can cause the thermal runaway of battery to lose efficacy, so during battery overcharge, the battery useful life is shortened.
(4) Influence of Temperature, battery life increase with the temperature rising in certain temperature range, and being increases because capacity raises with temperature.If discharge capacity is constant, then its depth of discharge reduces when temperature raises, Gu the life-span prolongs.But then reduced the life-span because of negative pole sulfuration capacitance loss when being higher than 50 ℃.
(5) influence of sulfuric acid concentration, the increase of sour density, the self discharge meeting of battery increases, and the corrosion of grid is also quickened, and has accelerated the loose of brown lead oxide and has come off, and along with the increase of using sour density in the storage battery, cycle life descends.The dehydration of overcharging and causing also can make the increase of the sour density of battery.
Summary of the invention
The utility model provides a kind of lead-acid batteries to discharge and recharge the intelligent management module, to solve the traditional storage battery group because overcharge, overdischarge, the unbalanced lower problem of the life of storage battery that causes of cell.
A kind of lead-acid batteries discharges and recharges the intelligent management module, comprising:
The step-down power supply unit is supplied power to main control chip;
Temperature detecting unit, the temperature of detection cell, output temperature signal;
Voltage detection unit detects the voltage of single cell, output voltage signal;
The monomer control unit is to the control of charging of single cell;
Main control chip receives temperature signal and voltage signal, and the output control signal is given the monomer control unit, to the cell control of charging, battery pack integral body is discharged and recharged control simultaneously.
This administrative template also comprises the signal receiving unit that is connected with main control chip.
Described monomer control unit is made up of metal-oxide-semiconductor and resistance, and the grid of metal-oxide-semiconductor connects the signal output part of main control chip, and drain electrode connects resistance.
Described temperature detecting unit comprises thermistor and the current limliting divider resistance that is in series, thermistor ground connection, and the current limliting divider resistance connects the step-down power supply unit, and the series connection node of thermistor and current limliting divider resistance is connected main control chip.
Described voltage detection unit is made up of two divider resistances, and both tie-points are connected with main control chip, one of them divider resistance ground connection.
The utility model administration module can be through detecting battery and ambient temperature; Charging voltage is revised; Simultaneously through the monomer control unit to the single battery control of charging, can eliminate the cell differences, in addition through battery pack integral body is discharged and recharged control; Can avoid overcharging and crossing putting, have important function improving battery life.
Description of drawings
Fig. 1 is the structural representation of the utility model administrative template;
Fig. 2 is the structural representation of the utility model step-down power supply unit;
Fig. 3 is the structural representation of the utility model temperature detecting unit;
Fig. 4 is the structural representation of the utility model monomer control unit;
Fig. 5 is the structural representation of the utility model voltage detecting circuit;
Fig. 6 is the structural representation of the utility model master control chip.
Embodiment
As shown in Figure 1, a kind of lead-acid batteries discharges and recharges the intelligent management module, comprises step-down power supply unit 1, temperature detecting unit 2, monomer control unit 3, voltage detection unit 4 and main control chip 5.As shown in Figure 2, step-down power supply unit 1 mainly comprises DC/DC transformer 101, and two inputs of DC/DC transformer 101 connect the both positive and negative polarity that battery pack connects, ground connection of output, and one is working power VCC, connects main control chip 5 and temperature detecting unit 2.
As shown in Figure 3, temperature detecting unit comprises the thermistor RT and the resistance R of series connection, and wherein resistance R connects working power VCC, thermistor RT ground connection, and both link nodes connect the signal input part of main control chip 5.
The present embodiment battery pack comprises six cells, and is as shown in Figure 4, and administration module comprises six monomer control units; Form by resistance R P1 ~ RP6, NMOS pipe MP1 ~ MP6; The source electrode of NMOS pipe connects diode cathode, and drain electrode connects diode cathode, and grid connects main control chip 4.
Six voltage detection units 4 are arranged in the present embodiment, and as shown in Figure 4, R1 ~ R12 forms by divider resistance, and single voltage detection unit is made up of two divider resistances, and the series connection node is connected one of them divider resistance ground connection with main control chip 5.Main control chip 5 also has a control signal output ends control, is mainly used in disconnection and the closure of control switch K.
The operation principle of this administration module is following:
Administration module is with after battery is connected; Step-down power supply unit 1 is given main control chip 5, and main control chip 5 detects the magnitude of voltage of battery temperatures and each cell through temperature detecting unit 2 and voltage detection unit 4, like voltage in normal range (NR); K switch is closed, discharges and recharges.
In charging process, along with the rising of monomer battery voltage, difference can appear in the voltage of each cell; When voltage difference reaches certain value; Through the charging of the single cell of monomer control unit 3 controls, excessive like this monomer battery voltage, its charging current is reduced; The voltage climbing speed reduces, and reaches unanimity until all monomer battery voltages.When temperature appearance fluctuation, main control chip compensates and corrects charging voltage according to temperature parameter (approximately 3mV/ ℃).
When charging voltage reached higher limit or discharge voltage and reaches lower limit, main control chip 5 control switch K broke off, and stop charge or discharge, avoid overcharging or cross putting.
Claims (5)
1. a lead-acid batteries discharges and recharges the intelligent management module, it is characterized in that, comprising:
The step-down power supply unit is supplied power to main control chip;
Temperature detecting unit, the temperature of detection cell, output temperature signal;
Voltage detection unit detects the voltage of single cell, output voltage signal;
The monomer control unit is to the control of charging of single cell;
Main control chip receives temperature signal and voltage signal, and the output control signal is given the monomer control unit, to the cell control of charging, battery pack integral body is discharged and recharged control simultaneously.
2. lead-acid batteries according to claim 1 discharges and recharges the intelligent management module, it is characterized in that, comprises the signal receiving unit that is connected with main control chip.
3. lead-acid batteries according to claim 1 discharges and recharges the intelligent management module, it is characterized in that, described monomer control unit is made up of metal-oxide-semiconductor and resistance, and the grid of metal-oxide-semiconductor connects the signal output part of main control chip, and drain electrode connects resistance.
4. lead-acid batteries according to claim 1 discharges and recharges the intelligent management module; It is characterized in that; Described temperature detecting unit comprises the thermistor and the current limliting divider resistance of series connection; Thermistor ground connection, the current limliting divider resistance connects the step-down power supply unit, and the series connection node of thermistor and current limliting divider resistance is connected main control chip.
5. lead-acid batteries according to claim 1 discharges and recharges the intelligent management module, it is characterized in that, described voltage detection unit is made up of two divider resistances, and both tie-points are connected with main control chip, one of them divider resistance ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120553669 CN202405819U (en) | 2011-12-27 | 2011-12-27 | Intelligent charge-discharge management module for lead acid storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120553669 CN202405819U (en) | 2011-12-27 | 2011-12-27 | Intelligent charge-discharge management module for lead acid storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202405819U true CN202405819U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120553669 Expired - Fee Related CN202405819U (en) | 2011-12-27 | 2011-12-27 | Intelligent charge-discharge management module for lead acid storage battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN202405819U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107520A (en) * | 2013-01-31 | 2013-05-15 | 深圳华粤宝电池有限公司 | System and method for lithium ion battery over-temperature protection |
| US11888340B2 (en) | 2020-12-04 | 2024-01-30 | Schneider Electric It Corporation | Method to enhance the life of a lithium battery |
-
2011
- 2011-12-27 CN CN 201120553669 patent/CN202405819U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107520A (en) * | 2013-01-31 | 2013-05-15 | 深圳华粤宝电池有限公司 | System and method for lithium ion battery over-temperature protection |
| US11888340B2 (en) | 2020-12-04 | 2024-01-30 | Schneider Electric It Corporation | Method to enhance the life of a lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20141227 |
|
| EXPY | Termination of patent right or utility model |