CN210007449U - low-voltage automatic separation protection circuit with window value for storage battery monitoring - Google Patents
low-voltage automatic separation protection circuit with window value for storage battery monitoring Download PDFInfo
- Publication number
- CN210007449U CN210007449U CN201921204762.8U CN201921204762U CN210007449U CN 210007449 U CN210007449 U CN 210007449U CN 201921204762 U CN201921204762 U CN 201921204762U CN 210007449 U CN210007449 U CN 210007449U
- Authority
- CN
- China
- Prior art keywords
- resistor
- resistance
- voltage
- protection circuit
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an low-voltage automatic protection circuit that breaks away from of battery monitoring area window value, including front end low pressure protection circuit and rear end step-down circuit, front end low pressure protection circuit includes battery voltage input end, master switch Q6, adjustable accurate shunt regulator Q3, resistance R21, resistance R17, resistance R24, resistance R25, resistance R26 and resistance R27, battery voltage input end is three routes respectively connecting resistance R21, resistance R26 and master switch Q6, resistance R26 divides the K end of two routes connecting resistance R27 and adjustable accurate shunt regulator Q3, adjustable accurate shunt regulator Q3's A end is connected to resistance R24's end, resistance R21 connecting resistance R17, resistance R17 divides three routes to connect adjustable accurate shunt regulator Q3's R end respectively, resistance R24 and resistance R25, resistance R25 divides two routes to connect master switch Q6 and rear end respectively when single battery start-up circuit the utility model discloses when the function of battery self appears, the protection of battery self can the battery.
Description
Technical Field
The utility model relates to a power supply circuit charges especially relates to kinds of battery monitoring take the low-voltage automatic protection circuit that breaks away from of window value.
Background
The battery is kinds of devices that directly convert chemical energy into electric energy, the battery is at the charging process, along with service environment and self difference can appear float the phenomenon that the charging voltage is not and causes, influence the discharge capacity of battery then, prior art's like circuit only can play voltage automatic monitoring function, balanced voltage function etc. but can't set for the fixed value in the aspect of the window value, can't start the automatic of reaching the low-voltage value and break away from even more, consequently, research and development kinds of battery monitoring take the low-voltage of window value to break away from protection circuit automatically, become the problem that technical staff in the field await solution urgently.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve above-mentioned not enough, provide kinds of battery monitoring and take the low-voltage automatic protection circuit that breaks away from of window value.
The utility model discloses an above-mentioned purpose is realized through following technical scheme that kind of battery monitoring take the low-voltage automatic protection circuit that breaks away from of window value, including front end low pressure protection circuit and rear end step-down circuit, front end low pressure protection circuit connects rear end step-down circuit, front end low pressure protection circuit includes battery voltage input end, controlgear operation power's master switch Q6, adjustable accurate shunt regulator Q3, resistance R21, resistance R17, resistance R24, resistance R25, resistance R26 and resistance R27, battery voltage input end is three routes respectively connecting resistance R21, resistance R26 and master switch Q6;
the resistor R26 is connected with the resistor R27 and the K end of the adjustable precision shunt regulator Q3 in two ways, and the A end of the adjustable precision shunt regulator Q3 is connected with the end of the resistor R24;
the resistor R21 is connected with the resistor R17, and the resistor R17 is divided into three paths which are respectively connected with the R end of the adjustable precision shunt regulator Q3, the resistor R24 and the resistor R25; the resistor R25 is divided into two paths and is respectively connected with the main switch Q6 and the rear-end voltage reduction circuit.
Preferably, the step-down power supply U3 adopts an MP2307DN chip, and a front-end low-voltage protection circuit of the chip supplies power to the chip.
Q6 is the master switch of the running power supply of the control device, Q6 is turned on, the back-end apparatus can be powered on and operated.Q 6 is PMOS, it turns on the condition that Vs > Vg, utilize this characteristic of PMOS, can set fixed voltage values of Vg, when VS ≦ Vg, Q6 is closed automatically (Vs ═ VBattery). Vg's size is controlled by Q3TL431 output voltage, Q3 output value determines Q6 is turned on directly, Q3 output voltage is determined by resistance R21, R17, R24, namely Vg 2.5 × (R21+ R17)/R24+1 ], so when VBattery Vg < Vg, Q6 is closed, the apparatus power cut-off, R25 has just changed window values of Vg that Q6 is turned off and turned on, namely the window value is smaller than when VBattery is turned off, avoid restarting continuously.
The utility model discloses well adjustable accurate shunt regulator Q3's output voltage is decided by resistance R21, R17, R24, and R25 has only changed window values that Q6 shut off and the Vg that switches on.
The utility model discloses when storage battery and single battery appear unusually, can start the protect function of self, more can adapt to product and safety need like this.
When the current is output or input to a single battery of the storage battery pack, when the voltage reaches the lower limit of the set window value, the module is automatically separated from the battery due to the protection of the battery, so that the battery is prevented from being over-discharged, and the protection is performed. When the charging is recovered and the voltage reaches the self-starting window value, the module is automatically started and put into operation.
The module plays an important role in a storage battery monitoring system, can automatically separate after the voltage reaches the peak value so as to play a protection function, and is a new technology application in the field of .
Compared with the prior art, the utility model the advantage be:
1. the efficiency advantage is as follows:
the utility model discloses an upgrade in original technique makes the advantage and the function of product obtain showing.
2. The cost advantage is as follows:
the utility model discloses an intelligence and automation technology's application, with the cost of bigger saving product, the harm that causes in the event says, and this product is the best with protectiveness and preventative doing, is the very big cost of having practiced thrift.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The present invention is further described in with reference to the following drawings.
As shown in fig. 1, types of low-voltage automatic disengagement protection circuits with window values for battery monitoring include a front-end low-voltage protection circuit and a rear-end voltage-dropping circuit, wherein the front-end low-voltage protection circuit is connected with the rear-end voltage-dropping circuit, the front-end low-voltage protection circuit includes a battery voltage input end, a main switch Q6 for controlling an equipment operation power supply, an adjustable precision shunt regulator Q3, a resistor R21, a resistor R17, a resistor R24, a resistor R25, a resistor R26 and a resistor R27, and the battery voltage input end is respectively connected with a resistor R21, a resistor R26 and a main switch Q6 in three ways;
the resistor R26 is connected with the resistor R27 and the K end of the adjustable precision shunt regulator Q3 in two ways, and the A end of the adjustable precision shunt regulator Q3 is connected with the end of the resistor R24;
the resistor R21 is connected with the resistor R17, and the resistor R17 is divided into three paths which are respectively connected with the R end of the adjustable precision shunt regulator Q3, the resistor R24 and the resistor R25; the resistor R25 is divided into two paths and is respectively connected with the main switch Q6 and the rear-end voltage reduction circuit.
Preferably, the step-down power supply U3 adopts an MP2307DN chip, and a front-end low-voltage protection circuit of the chip supplies power to the chip.
Q6 is the master switch of the running power supply of the control device, Q6 is turned on, the back-end apparatus can be powered on and operated.Q 6 is PMOS, it turns on the condition that Vs > Vg, utilize this characteristic of PMOS, can set fixed voltage values of Vg, when VS ≦ Vg, Q6 is closed automatically (Vs ═ VBattery). Vg's size is controlled by Q3TL431 output voltage, Q3 output value determines Q6 is turned on directly, Q3 output voltage is determined by resistance R21, R17, R24, namely Vg 2.5 × (R21+ R17)/R24+1 ], so when VBattery Vg < Vg, Q6 is closed, the apparatus power cut-off, R25 has just changed window values of Vg that Q6 is turned off and turned on, namely the window value is smaller than when VBattery is turned off, avoid restarting continuously.
The utility model discloses well adjustable accurate shunt regulator Q3's output voltage is decided by resistance R21, R17, R24, and R25 has only changed window values that Q6 shut off and the Vg that switches on.
The utility model discloses when storage battery and single battery appear unusually, can start the protect function of self, more can adapt to product and safety need like this.
When the current is output or input to a single battery of the storage battery pack, when the voltage reaches the lower limit of the set window value, the module is automatically separated from the battery due to the protection of the battery, so that the battery is prevented from being over-discharged, and the protection is performed. When the charging is recovered and the voltage reaches the self-starting window value, the module is automatically started and put into operation.
The module plays an important role in a storage battery monitoring system, can automatically separate after the voltage reaches the peak value so as to play a protection function, and is a new technology application in the field of .
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (2)
- The low-voltage automatic disconnection protection circuit with the window value for monitoring the storage batteries is characterized by comprising a front-end low-voltage protection circuit and a rear-end voltage reduction circuit, wherein the front-end low-voltage protection circuit is connected with the rear-end voltage reduction circuit, the front-end low-voltage protection circuit comprises a battery voltage input end, a main switch Q6 for controlling an equipment operation power supply, an adjustable precision shunt regulator Q3, a resistor R21, a resistor R17, a resistor R24, a resistor R25, a resistor R26 and a resistor R27, and the battery voltage input end is respectively connected with a resistor R21, a resistor R26 and a main switch Q6 in three ways;the resistor R26 is connected with the resistor R27 and the K end of the adjustable precision shunt regulator Q3 in two ways, and the A end of the adjustable precision shunt regulator Q3 is connected with the end of the resistor R24;the resistor R21 is connected with the resistor R17, and the resistor R17 is divided into three paths which are respectively connected with the R end of the adjustable precision shunt regulator Q3, the resistor R24 and the resistor R25; the resistor R25 is divided into two paths and is respectively connected with the main switch Q6 and the rear-end voltage reduction circuit.
- 2. The protection circuit for automatic low-voltage drop-out during battery monitoring with window value as claimed in claim 1, wherein the voltage-dropping power supply U3 is MP2307DN chip, and its front-end low-voltage protection circuit supplies power to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921204762.8U CN210007449U (en) | 2019-07-29 | 2019-07-29 | low-voltage automatic separation protection circuit with window value for storage battery monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921204762.8U CN210007449U (en) | 2019-07-29 | 2019-07-29 | low-voltage automatic separation protection circuit with window value for storage battery monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210007449U true CN210007449U (en) | 2020-01-31 |
Family
ID=69310978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921204762.8U Active CN210007449U (en) | 2019-07-29 | 2019-07-29 | low-voltage automatic separation protection circuit with window value for storage battery monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210007449U (en) |
-
2019
- 2019-07-29 CN CN201921204762.8U patent/CN210007449U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102709882B (en) | Short circuit protection circuit of direct current power supply provided with precharging function | |
| CN104044538B (en) | Electricity loss prevention device and electricity loss prevention method of low-voltage storage battery | |
| CN107248771A (en) | The battery protection system and its method of new energy | |
| CN102222942A (en) | Power supply circuit and charging method for electronic equipment | |
| KR102187107B1 (en) | Battery system for a battery-operated electric vehicle and method for utilizing a remaining range of same | |
| CN107399287B (en) | Vehicle power system for boost start | |
| CN205489670U (en) | Automobile emergency starting power source | |
| CN208257490U (en) | A kind of photovoltaic energy storage device | |
| WO2013147489A1 (en) | Charger for blocking standby power and method of controlling same | |
| CN210007449U (en) | low-voltage automatic separation protection circuit with window value for storage battery monitoring | |
| CN104037842A (en) | Soft power outage battery management system used for electric vehicles | |
| CN113644704A (en) | Two-way battery charging and discharging constant current control and circulating current suppression device, power supply and method | |
| CN201893589U (en) | Serial battery pack charge balance system | |
| CN110450675B (en) | Power battery system, control method and electric automobile | |
| CN104300605A (en) | Power circuit and control method thereof | |
| CN102280916A (en) | Power supply module compatible with a plurality of batteries and GPS receiving equipment | |
| CN207896718U (en) | A kind of wearable electronic equipment is for electric installation | |
| CN102064580A (en) | Series connected battery pack charging balance system and charging balance method thereof | |
| CN106183825A (en) | Accumulator preventing electric loss method | |
| CN206977128U (en) | The battery protection system of new energy | |
| CN112061056B (en) | Processing method for reducing quiescent current of whole vehicle | |
| CN210957837U (en) | Detection control circuit, battery pack and electric tool | |
| CN114655071A (en) | Battery, battery control method and electric vehicle | |
| CN208539622U (en) | A kind of battery activated charging circuit | |
| CN111404237A (en) | Onboard charging controller for battery with taps and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |