CN203553910U - Storage-battery charging protection circuit - Google Patents
Storage-battery charging protection circuit Download PDFInfo
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- CN203553910U CN203553910U CN201320576153.1U CN201320576153U CN203553910U CN 203553910 U CN203553910 U CN 203553910U CN 201320576153 U CN201320576153 U CN 201320576153U CN 203553910 U CN203553910 U CN 203553910U
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Abstract
The utility model provides a storage-battery charging protection circuit, and the protection circuit is connected between the output end of a charger and a storage battery. The protection circuit comprises a low-voltage power-switching circuit, a storage battery voltage collection circuit, and a comparison control circuit. The comparison control circuit comprises a relay which is connected with the charger and the storage battery, and also comprises a comparator. The input end of the storage battery voltage collection circuit is connected with the storage battery, and the output end of the storage battery voltage collection circuit is connected with the input end of the comparator in the comparison control circuit. The output end of the comparator controls and is connected with a relay drive power loop. The protection circuit provided by the utility model is scientific in design, is convenient to use, is good in safety, and protects the storage battery.
Description
Technical field
The utility model relates to a kind of charging protection circuit for storage battery, specifically, has related to a kind of charging protection circuit for storage battery that can automatically disconnect charger.
Background technology
Storage battery adopts charger to charge more, existing charger construction is simple, after being directly connected with storage battery, charge, but because the charge in batteries time is longer, be difficult to accomplish in battery charging process, someone guards always, and by the time storage battery cannot disconnect after being full of and being connected of charger in time.After so just having caused storage battery to be full of, still connecting charger and then charging,, there is potential safety hazard in the long damage that easily causes storage battery of charging interval simultaneously.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of and can when storage battery is full of electricity, disconnect the charging protection circuit for storage battery between charger and storage battery, protection storage battery
To achieve these goals, the technical scheme that the utility model adopts is: a kind of charging protection circuit for storage battery, be connected between the output and storage battery of charger, it comprises low-tension supply change-over circuit, battery tension Acquisition Circuit and comparison control circuit, described comparison control circuit comprises relay and the comparator of connecting charger and storage battery, the input of described battery tension Acquisition Circuit connects storage battery, the output of described battery tension Acquisition Circuit connects the input of comparator in comparison control circuit, the output control connection relay driving power loop of described comparator, according to the voltage signal collecting, judge whether to disconnect or closed described relay, described low-tension supply change-over circuit provides working power for described comparator and described relay.
Based on above-mentioned, described low-tension supply change-over circuit comprises polar capacitor C34, polar capacitor C36, diode D16, inductance L 2 and LM2575-12 type power supply chip, the two ends of described polar capacitor C34 are as the input of described low-tension supply change-over circuit, the positive pole of described polar capacitor C34 connects the Vin pin of described LM2575-12 type power supply chip, and the negative pole of described polar capacitor C34 connects respectively the Groud pin of described LM2575-12 type power supply chip, described LM2575-12 type power supply chip
the negative pole of the anode of/OFF pin, described diode D16 and described polar capacitor C36, the Output pin of described LM2575-12 type power supply chip connects respectively the negative electrode of described diode D16 and one end of described inductance L 12, the Feedback pin of described LM2575-12 type power supply chip connects respectively the other end of described inductance L 12 and the positive pole of described polar capacitor C36, the minus earth of described polar capacitor C36, the two ends of described polar capacitor C36 are as the output of described low-tension supply change-over circuit.
Based on above-mentioned, described low-tension supply change-over circuit also comprises relay indicating light circuit, described relay indicating light circuit comprises resistance R 6 and light-emitting diode D3, one end of described resistance R 6 connects the positive pole of described polar capacitor C36, the other end of described resistance R 6 connects the anode of described light-emitting diode D3, and the negative electrode of described light-emitting diode D3 connects the negative pole of described polar capacitor C36.
Based on above-mentioned, the reference voltage input of described comparator is provided with reference voltage regulating circuit, described reference voltage regulating circuit comprises resistance R 7, voltage stabilizing didoe D4, resistance R 10, resistance R 13, adjustable resistance R14 and capacitor C 2, one end of described resistance R 7 connects the positive pole of described polar capacitor C36, the other end of described resistance R 7 connects respectively one end of described resistance R 10 and the negative electrode of described voltage stabilizing didoe D4, the negative pole of polar capacitor C36 described in the anodic bonding of described voltage stabilizing didoe D4, the anode of one end of described resistance R 7 and described voltage stabilizing didoe D4 is as the input of described reference voltage regulating circuit, the other end of described resistance R 10 connects respectively one end of described resistance R 13, one end of one end of described adjustable resistance R14 and described capacitor C 2, the other end of described resistance R 13 connects respectively the anode of described voltage stabilizing didoe D4, the other end of the other end of described adjustable resistance R14 and described capacitor C 2, the two ends of described capacitor C 2 are as the output of described reference voltage regulating circuit.
Based on above-mentioned, described battery tension Acquisition Circuit comprises resistance R 1, resistance R 2, resistance R 12 and capacitor C 1, one end of described resistance R 1 and one end of described resistance R 12 are connected respectively the both positive and negative polarity of storage battery, the other end of described resistance R 1 connects one end of described resistance R 2, the other end of described resistance R 2 connects respectively the other end of described resistance R 12 and one end of described capacitor C 1, the other end of described capacitor C 1 connects one end of described resistance R 12 and the other end of described capacitor C 2, and the two ends of described capacitor C 1 are as the output of described battery tension Acquisition Circuit.
Based on above-mentioned, described comparison control circuit comprises comparator U1A, resistance R 4, resistance R 5, resistance R 8, resistance R 9, resistance R 11, triode Q1, diode D1 and relay K 1, the negative input of described comparator U1A connects one end of described resistance R 4, the positive input of described comparator U1A connects respectively one end of described resistance R 11 and one end of described resistance R 9, the output of described comparator U1A connects respectively the other end of described resistance R 9 and one end of described resistance R 5, the power supply input cathode node of described comparator is connected with the output of described low-tension supply change-over circuit respectively with power supply input negative pole node, the other end of described resistance R 5 connects respectively one end of described resistance R 8 and the base stage of described triode Q1, the emitter of described triode Q1 connects the other end the ground connection of described resistance R 8, the collector electrode of described triode Q1 connects respectively one end of anode and described relay K 1 coil of described diode D1, the anode of described diode D1 connects respectively the other end of described electrical equipment K1 coil and the positive pole of described polar capacitor C36, described comparator U1A connects one end of described capacitor C 1 by the other end of described resistance R 4, described comparator U1A connects one end of described capacitor C 2 by the other end of described resistance R 11, the two ends of described relay K 1 are connecting charger forward output and storage battery positive input respectively.
Based on above-mentioned, described comparison control circuit also comprises charging indicator light circuit, described charging indicator light circuit comprises resistance R 3 and light-emitting diode D2, one end of described resistance R 3 connects the positive pole of described polar capacitor C36, the other end of described resistance R 3 connects the anode of described light-emitting diode D2, and the negative electrode of described light-emitting diode D2 connects the collector electrode of described triode Q1.
The relative prior art of the beneficial effects of the utility model has substantive distinguishing features and progress, specifically, the utility model is connected traditional artificial disconnection charger mode with storage battery automatically shuts down by charge protector, efficiently solve the problem that artificial disconnection cannot disconnect charger in time, reduce the battery damage that long-term charging causes, and then prevented the potential safety hazard that long-term charging brings; Specifically, utilize the output of low-tension supply change-over circuit connecting charger that working power is provided, described reference voltage regulating circuit provides reference voltage, described battery tension Acquisition Circuit gathers battery tension voltage as a comparison, described comparison control circuit judges whether to disconnect or closing relay according to the reference voltage collecting and comparative voltage, then automatically controls being connected of charger and storage battery; It has advantages of the good and protection storage battery of design science, property easy to use, safe.Circuit structure is simple, and cost is low, easily realizes favourable popularization.
Accompanying drawing explanation
Fig. 1 is structural representation block diagram of the present utility model.
Fig. 2 is the particular circuit configurations schematic diagram of described low-tension supply change-over circuit, described reference voltage regulating circuit, described battery tension Acquisition Circuit and described comparison control circuit.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As shown in Figure 1, a kind of charging protection circuit for storage battery, be connected between the output and storage battery of charger, it comprises low-tension supply change-over circuit, reference voltage regulating circuit, battery tension Acquisition Circuit and comparison control circuit, described comparison control circuit comprises relay and the comparator of connecting charger and storage battery, the input of described battery tension Acquisition Circuit connects storage battery, the output of described battery tension Acquisition Circuit connects the input of comparator in comparison control circuit, the output control connection relay driving power loop of described comparator, according to the voltage signal collecting, judge whether to disconnect or closed described relay, described low-tension supply change-over circuit provides working power for described comparator and described relay.
The output of the input connecting charger of described low-tension supply change-over circuit, described low-tension supply change-over circuit can carry out step-down by the output voltage of charger output, applicable working power is provided, the output of described low-tension supply change-over circuit connects respectively described reference voltage regulating circuit and described comparison control circuit and provides working power with this, the input of described battery tension Acquisition Circuit connects storage battery, with this, gather current voltage the voltage as a comparison of storage battery, described reference voltage regulating circuit provides applicable reference voltage as required, described comparison control circuit comprises the relay of connecting charger and storage battery, disconnection or closure between the disconnection of described relay or Closed control charger and storage battery, the input of described comparison control circuit connects respectively the output of described battery tension Acquisition Circuit and the output of described reference voltage regulating circuit obtains reference voltage and comparative voltage with this, and judge whether to disconnect or closed described relay according to the voltage signal collecting, if comparative voltage is lower than reference voltage, relay closes charger charges to storage battery, if comparative voltage is higher than reference voltage, relay disconnects rechargable battery to be stopped to charge in batteries.
In the present embodiment, provided concrete electrical block diagram, as shown in Figure 2, described low-tension supply change-over circuit comprises polar capacitor C34, polar capacitor C36, diode D16, inductance L 2 and LM2575-12 type power supply chip, the two ends of described polar capacitor C34 are as the input of described low-tension supply change-over circuit, the anodal connecting charger forward output of described polar capacitor C34, the negative pole connecting charger negative sense output of described polar capacitor C34, with this, obtain power supply, the positive pole of described polar capacitor C34 connects the Vin pin of described LM2575-12 type power supply chip, the negative pole of described polar capacitor C34 connects respectively the Groud pin of described LM2575-12 type power supply chip, described LM2575-12 type power supply chip
the negative pole of the anode of/OFF pin, described diode D16 and described polar capacitor C36, the Output pin of described LM2575-12 type power supply chip connects respectively the negative electrode of described diode D16 and one end of described inductance L 12, the Feedback pin of described LM2575-12 type power supply chip connects respectively the other end of described inductance L 12 and the positive pole of described polar capacitor C36, the minus earth of described polar capacitor C36, the two ends of described polar capacitor C36 are as the output of described low-tension supply change-over circuit.
Described reference voltage regulating circuit comprises resistance R 7, voltage stabilizing didoe D4, resistance R 10, resistance R 13, adjustable resistance R14 and capacitor C 2, one end of described resistance R 7 connects the positive pole of described polar capacitor C36, the other end of described resistance R 7 connects respectively one end of described resistance R 10 and the negative electrode of described voltage stabilizing didoe D4, the negative pole of polar capacitor C36 described in the anodic bonding of described voltage stabilizing didoe D4, the anode of one end of described resistance R 7 and described voltage stabilizing didoe D4 is as the input of described reference voltage regulating circuit, the other end of described resistance R 10 connects respectively one end of described resistance R 13, one end of one end of described adjustable resistance R14 and described capacitor C 2, the other end of described resistance R 13 connects respectively the anode of described voltage stabilizing didoe D4, the other end of the other end of described adjustable resistance R14 and described capacitor C 2, the two ends of described capacitor C 2 are as the output of described reference voltage regulating circuit.
Described battery tension Acquisition Circuit comprises resistance R 1, resistance R 2, resistance R 12 and capacitor C 1, the positive input of one end connection storage battery of described resistance R 1 is connected the negative input of storage battery with one end of described resistance R 12, the other end of described resistance R 1 connects one end of described resistance R 2, the other end of described resistance R 2 connects respectively the other end of described resistance R 12 and one end of described capacitor C 1, the other end of described capacitor C 1 connects one end of described resistance R 12 and the other end of described capacitor C 2, the two ends of described capacitor C 1 are as the output of described battery tension Acquisition Circuit.
Described comparison control circuit comprises comparator U1A, resistance R 4, resistance R 5, resistance R 8, resistance R 9, resistance R 11, triode Q1, diode D1 and relay K 1, the negative input of described comparator U1A connects one end of described resistance R 4, the positive input of described comparator U1A connects respectively one end of described resistance R 11 and one end of described resistance R 9, the output of described comparator U1A connects respectively the other end of described resistance R 9 and one end of described resistance R 5, the power supply input cathode node of described comparator is connected with the output of described low-tension supply change-over circuit respectively with power supply input negative pole node, the other end of described resistance R 5 connects respectively one end of described resistance R 8 and the base stage of described triode Q1, the emitter of described triode Q1 connects the other end the ground connection of described resistance R 8, the collector electrode of described triode Q1 connects respectively one end of anode and described relay K 1 coil of described diode D1, the anode of described diode D1 connects respectively the other end of described electrical equipment K1 coil and the positive pole of described polar capacitor C36.
Described comparator U1A connects one end of described capacitor C 1 by the other end of described resistance R 4, described comparator U1A connects one end of described capacitor C 2 by the other end of described resistance R 11, the two ends of described relay K 1 are connecting charger forward output and storage battery positive input respectively.
Described LM2575-12 type power supply chip is a switching power source chip of MOTOROLA company, chip internal integrated MOS pipe, typical case's switching frequency is 50KHZ, and this chip comprises five pins respectively: the Groud pin of the Vin pin of LM2575-12 type power supply chip, the Output pin of LM2575-12 type power supply chip, LM2575-12 type power supply chip, the Feedback pin of LM2575-12 type power supply chip and LM2575-12 type power supply chip
/ OFF pin, described LM2575-12 type power supply chip
/ OFF pin Low level effective, charger forward output enters the Vin pin of described LM2575-12 type power supply chip after polar capacitor C34 filtering, charger negative sense output enters the Groud pin of described LM2575-12 type power supply chip, through the inner metal-oxide-semiconductor of described LM2575-12 type power supply chip, with 50KHZ switching frequency, carry out producing DC power supply after PWM adjusting, and export by the Output pin of LM2575-12 type power supply chip the Voltage Feedback that carries out the Feedback pin of power transfer and described LM2575-12 type power supply chip through inductance L 2, make to export the burning voltage of VCC12V, and provide working power to coil and the comparator U1A of relay K 1.
The two ends that the input of described reference voltage regulating circuit connects described polar capacitor C36 obtain the burning voltage of VCC12V with this; adjustable resistance R14 can produce a reference voltage between adjustable resistance R14 and ground; according to the model of storage battery, regulate the reference voltage of this charging protection circuit for storage battery; the reference voltage of described reference voltage regulating circuit output by resistance R 11 enter described comparator U1A positive input, described capacitor C 2 can prevent the voltage jump and the filtering interference signals that when regulating adjustable resistance R14, cause.For example: arrange and when battery tension reaches voltage U, stop charging, reference voltage is U1, according to the concrete structure of battery tension Acquisition Circuit in conjunction with formula:
, can calculate the reference voltage that needs setting.
Described battery tension Acquisition Circuit can gather the current voltage of storage battery and by resistance R 4, enter the negative input of described comparator U1A, with this, provides comparative voltage.
Described comparator U1A analyzes relatively according to the reference voltage collecting and comparative voltage, the output of described comparator U1A is exported corresponding low level or high level, with this, controlling triode Q1 turn-offs or conducting, and then control relay K1 disconnects or closure, reach the object of automatic disconnection charger.
In the present embodiment, provide a kind of charging of 12V storage battery, battery tension reaches voltage U and gets 14V, according to formula, calculate, while giving 12V charge in batteries, the reference voltage of employing is 0.67V, the comparative voltage collecting when battery tension Acquisition Circuit is during higher than 0.67V, the output output low level of described comparator U1A, now triode Q1 cut-off, relay coil no power, relay K 1 disconnects, and rechargable battery stops to charge in batteries; Otherwise rechargable battery is to charge in batteries.
For the ease of observing described low-tension supply change-over circuit, whether normally work, described low-tension supply change-over circuit also comprises relay indicating light circuit, described relay indicating light circuit comprises resistance R 6 and light-emitting diode D3, one end of described resistance R 6 connects the positive pole of described polar capacitor C36, the other end of described resistance R 6 connects the anode of described light-emitting diode D3, the negative electrode of described light-emitting diode D3 connects the negative pole of described polar capacitor C36, according to using, need described light-emitting diode D3 to adopt the light-emitting diode that can send green glow, when low-tension supply change-over circuit is normally worked, described light-emitting diode D3 lights.
For the ease of whether observing charger to charge in batteries, described comparison control circuit also comprises charging indicator light circuit, described charging indicator light circuit comprises resistance R 3 and light-emitting diode D2, one end of described resistance R 3 connects the positive pole of described polar capacitor C36, the other end of described resistance R 3 connects the anode of described light-emitting diode D2, the negative electrode of described light-emitting diode D2 connects the collector electrode of described triode Q1, according to using, need the described light-emitting diode D2 can be with the light-emitting diode that can send ruddiness, during charging, telescopic light-emitting diode D2 lights.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (7)
1. a charging protection circuit for storage battery, be connected between the output and storage battery of charger, it comprises low-tension supply change-over circuit, battery tension Acquisition Circuit and comparison control circuit, it is characterized in that: described comparison control circuit comprises relay and the comparator of connecting charger and storage battery, the input of described battery tension Acquisition Circuit connects storage battery, the output of described battery tension Acquisition Circuit connects the input of comparator in comparison control circuit, the output control connection relay driving power loop of described comparator, according to the voltage signal collecting, judge whether to disconnect or closed described relay, described low-tension supply change-over circuit provides working power for described comparator and described relay.
2. charging protection circuit for storage battery according to claim 1; it is characterized in that: described low-tension supply change-over circuit comprises polar capacitor C34, polar capacitor C36, diode D16, inductance L 2 and LM2575-12 type power supply chip; the two ends of described polar capacitor C34 are as the input of described low-tension supply change-over circuit; the positive pole of described polar capacitor C34 connects the Vin pin of described LM2575-12 type power supply chip, and the negative pole of described polar capacitor C34 connects respectively the Groud pin of described LM2575-12 type power supply chip, described LM2575-12 type power supply chip
the negative pole of the anode of/OFF pin, described diode D16 and described polar capacitor C36, the Output pin of described LM2575-12 type power supply chip connects respectively the negative electrode of described diode D16 and one end of described inductance L 12, the Feedback pin of described LM2575-12 type power supply chip connects respectively the other end of described inductance L 12 and the positive pole of described polar capacitor C36, the minus earth of described polar capacitor C36, the two ends of described polar capacitor C36 are as the output of described low-tension supply change-over circuit.
3. charging protection circuit for storage battery according to claim 2; it is characterized in that: described low-tension supply change-over circuit also comprises relay indicating light circuit; described relay indicating light circuit comprises resistance R 6 and light-emitting diode D3; one end of described resistance R 6 connects the positive pole of described polar capacitor C36; the other end of described resistance R 6 connects the anode of described light-emitting diode D3, and the negative electrode of described light-emitting diode D3 connects the negative pole of described polar capacitor C36.
4. according to the charging protection circuit for storage battery described in claim 2 or 3, it is characterized in that: the reference voltage input of described comparator is provided with reference voltage regulating circuit, described reference voltage regulating circuit comprises resistance R 7, voltage stabilizing didoe D4, resistance R 10, resistance R 13, adjustable resistance R14 and capacitor C 2, one end of described resistance R 7 connects the positive pole of described polar capacitor C36, the other end of described resistance R 7 connects respectively one end of described resistance R 10 and the negative electrode of described voltage stabilizing didoe D4, the negative pole of polar capacitor C36 described in the anodic bonding of described voltage stabilizing didoe D4, the anode of one end of described resistance R 7 and described voltage stabilizing didoe D4 is as the input of described reference voltage regulating circuit, the other end of described resistance R 10 connects respectively one end of described resistance R 13, one end of one end of described adjustable resistance R14 and described capacitor C 2, the other end of described resistance R 13 connects respectively the anode of described voltage stabilizing didoe D4, the other end of the other end of described adjustable resistance R14 and described capacitor C 2, the two ends of described capacitor C 2 are as the output of described reference voltage regulating circuit.
5. charging protection circuit for storage battery according to claim 4, it is characterized in that: described battery tension Acquisition Circuit comprises resistance R 1, resistance R 2, resistance R 12 and capacitor C 1, one end of described resistance R 1 and one end of described resistance R 12 are connected respectively the both positive and negative polarity of storage battery, the other end of described resistance R 1 connects one end of described resistance R 2, the other end of described resistance R 2 connects respectively the other end of described resistance R 12 and one end of described capacitor C 1, the other end of described capacitor C 1 connects one end of described resistance R 12 and the other end of described capacitor C 2, the two ends of described capacitor C 1 are as the output of described battery tension Acquisition Circuit.
6. charging protection circuit for storage battery according to claim 5, it is characterized in that: described comparison control circuit comprises comparator U1A, resistance R 4, resistance R 5, resistance R 8, resistance R 9, resistance R 11, triode Q1, diode D1 and relay K 1, the negative input of described comparator U1A connects one end of described resistance R 4, the positive input of described comparator U1A connects respectively one end of described resistance R 11 and one end of described resistance R 9, the output of described comparator U1A connects respectively the other end of described resistance R 9 and one end of described resistance R 5, the power supply input cathode node of described comparator is connected with the output of described low-tension supply change-over circuit respectively with power supply input negative pole node, the other end of described resistance R 5 connects respectively one end of described resistance R 8 and the base stage of described triode Q1, the emitter of described triode Q1 connects the other end the ground connection of described resistance R 8, the collector electrode of described triode Q1 connects respectively one end of anode and described relay K 1 coil of described diode D1, the anode of described diode D1 connects respectively the other end of described electrical equipment K1 coil and the positive pole of described polar capacitor C36, described comparator U1A connects one end of described capacitor C 1 by the other end of described resistance R 4, described comparator U1A connects one end of described capacitor C 2 by the other end of described resistance R 11, the two ends of described relay K 1 are connecting charger forward output and storage battery positive input respectively.
7. charging protection circuit for storage battery according to claim 6; it is characterized in that: described comparison control circuit also comprises charging indicator light circuit; described charging indicator light circuit comprises resistance R 3 and light-emitting diode D2; one end of described resistance R 3 connects the positive pole of described polar capacitor C36; the other end of described resistance R 3 connects the anode of described light-emitting diode D2, and the negative electrode of described light-emitting diode D2 connects the collector electrode of described triode Q1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320576153.1U CN203553910U (en) | 2013-09-18 | 2013-09-18 | Storage-battery charging protection circuit |
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| CN201320576153.1U CN203553910U (en) | 2013-09-18 | 2013-09-18 | Storage-battery charging protection circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836302A (en) * | 2015-05-25 | 2015-08-12 | 泉州市南安市轴飞电子科技有限公司 | Self-protection battery charging circuit structure |
| CN105375615A (en) * | 2015-11-20 | 2016-03-02 | 苏州太阳都信息科技有限公司 | Fire-fighting host computer comprehensive power supply system equipped with main and standby power detecting circuit |
| CN110400981A (en) * | 2019-06-20 | 2019-11-01 | 江苏永贵新能源科技有限公司 | One kind being used for locomotive storage batteries safety protective circuit |
| CN111431148A (en) * | 2020-04-14 | 2020-07-17 | 深圳供电局有限公司 | Battery protection circuit |
-
2013
- 2013-09-18 CN CN201320576153.1U patent/CN203553910U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836302A (en) * | 2015-05-25 | 2015-08-12 | 泉州市南安市轴飞电子科技有限公司 | Self-protection battery charging circuit structure |
| CN105375615A (en) * | 2015-11-20 | 2016-03-02 | 苏州太阳都信息科技有限公司 | Fire-fighting host computer comprehensive power supply system equipped with main and standby power detecting circuit |
| CN110400981A (en) * | 2019-06-20 | 2019-11-01 | 江苏永贵新能源科技有限公司 | One kind being used for locomotive storage batteries safety protective circuit |
| CN111431148A (en) * | 2020-04-14 | 2020-07-17 | 深圳供电局有限公司 | Battery protection circuit |
| CN111431148B (en) * | 2020-04-14 | 2022-07-22 | 深圳供电局有限公司 | Battery protection circuit |
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