CN215870827U - Multifunctional charger - Google Patents
Multifunctional charger Download PDFInfo
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- CN215870827U CN215870827U CN202121738183.9U CN202121738183U CN215870827U CN 215870827 U CN215870827 U CN 215870827U CN 202121738183 U CN202121738183 U CN 202121738183U CN 215870827 U CN215870827 U CN 215870827U
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- battery pack
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Abstract
The utility model discloses a multifunctional charger, which comprises a shell, a control module, a charging module, a voltage detection module and a discharging module, wherein the discharging module is connected with a positive terminal and the control module; the control module stores a first voltage value and a second voltage value smaller than the first voltage value, the charger is provided with a charging mode and a discharging mode, when the charger is in the charging mode, the control module charges the battery pack to the first voltage value, and when the charger is in the discharging mode, the controller discharges the battery pack to the second voltage value. The charger is additionally provided with the discharging module, when a user needs to store or transport the battery pack for a long time, the discharging mode is selected for the charger through the mode selection switch, and meanwhile, the voltage detection module is additionally arranged for detecting the voltage of the battery pack in real time and accurately discharging the battery pack in a full-charge state until the battery pack is reduced to a safe voltage, so that the safety coefficient of the battery pack is greatly improved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the field of electronics, in particular to a multifunctional charger.
[ background of the utility model ]
The charger is used as a charging tool for a battery or a battery pack, generally has only a charging function, and does not have a discharging function, the battery pack in a full-charge state is not used for a long time for placing or needs to be transported for a long distance by electricity, and the battery pack in the full-charge state has high activity, so that a fire phenomenon easily occurs to cause a safety accident, and the safety coefficient of the battery pack is low, so that a user needs to perform discharging operation on the battery pack.
In order to achieve the purposes of reducing the voltage of the battery pack and improving the safety performance of the battery pack, a user generally cannot find a special discharging load or an electric tool to discharge the battery pack, which is very troublesome and unsafe, but the voltage of the battery pack cannot be set to an accurate and reasonable value through the discharging of the electric tool, and the operation of people is required to be ceaselessly performed, which is very inconvenient.
Therefore, there is a need for a multifunctional charger with precise discharging and convenient use to solve the above problems.
[ Utility model ] content
In view of the deficiencies of the prior art, it is an object of the present invention to provide a multi-functional charger that is both dischargeable and rechargeable.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a multifunctional charger is used for being connected with a battery pack and comprises a shell, a positive terminal and a negative terminal which are arranged on the shell and matched with the positive electrode and the negative electrode of the battery pack, and a control circuit board arranged in the shell, wherein the control circuit board comprises a control module, a charging module and a voltage detection module which are connected with the control module, and a discharging module which is connected with the positive terminal and the control module; the control module stores a first voltage value and a second voltage value smaller than the first voltage value, the charger is provided with a charging mode and a discharging mode, when the charger is in the charging mode, the controller charges the battery pack to the first voltage value, and when the charger is in the discharging mode, the controller discharges the battery pack to the second voltage value.
Further, the discharge module includes a discharge resistor and a first switching element, one end of the discharge resistor is connected to the positive terminal, the other end of the discharge resistor is connected to the first switching element, and the first switching element is grounded.
Furthermore, the voltage detection module comprises a voltage division circuit and a filter circuit, the voltage division circuit is connected to the filter circuit, and the filter circuit is connected to the control module.
Further, the voltage dividing circuit includes a voltage dividing resistor R1, a second switching element and a voltage dividing resistor R2, one end of the voltage dividing resistor R1 is connected to the positive terminal, the other end of the voltage dividing resistor R1 is connected to the second switching element, and the other end of the second switching element is connected in series to the voltage dividing resistor R2.
Furthermore, the control circuit board further comprises a mode selection switch, the mode selection switch is used for converting a charging mode and a discharging mode of the battery pack, and the mode selection switch is connected with an indicator light through the control module.
Further, the mode selection switch is a key switch, the key switch is pressed to output a low level signal to the control module, and the control module detects the low level signal to alternately switch the charging mode and the discharging mode.
Furthermore, the indicator light is divided into a charging mode indicator light and a discharging mode indicator light, both of which are connected to the control module, when the battery pack is in a charging mode state, the charging mode indicator light flashes, and the discharging mode indicator light extinguishes; when the battery pack is in a discharge mode state, the discharge mode indicator lamp flashes, and the charge mode indicator lamp extinguishes.
Furthermore, the indicator light is a light emitting diode, the positive electrode of the indicator light is connected to the pull-up power source, the negative electrode of the indicator light is connected to the control module, and the control module is conducted when outputting a low level.
Furthermore, the charging module comprises a third switch element, a charging resistor and a fourth switch element, wherein one end of the third switch element is connected to the positive terminal of the charger, the other end of the third switch element is connected to the charging resistor, the other end of the charging resistor is connected to the fourth switch element, and the fourth switch element is grounded.
Further, the first voltage value is a full-electricity voltage and the voltage value is 4.2V, and the second voltage value is a safety voltage and the voltage value is not higher than 3.8V.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the discharging module is additionally arranged in the charger, when a user needs to store or transport the charged battery pack for a long time, the discharging mode can be selected through the mode selection switch on the charger, the voltage of the battery pack is detected in real time through the voltage detection module, and when the battery pack is discharged to a safe voltage, the discharging is automatically stopped, so that the battery pack in a full-charge state can be discharged, the voltage value can be accurately and reasonably controlled, and the purposes of reducing the activity of the battery pack and improving the safety coefficient of the battery pack are finally realized; and secondly, the user is prevented from seeking a discharging load or an electric tool for discharging the battery pack in a time-consuming and labor-consuming manner, and the practicability is high.
[ description of the drawings ]
The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings:
fig. 1 is an overall structural view of the multi-functional charger of the present invention;
fig. 2 is a control circuit diagram of the multifunctional charger of the present invention.
The meaning of the reference symbols in the figures:
1. the display device comprises a shell 2, an indicator lamp 3, a charging module 4, a voltage detection module 5, a discharging module U1, a control module R0, a discharging resistor R1, a voltage dividing resistor R2, a voltage dividing resistor R3, a charging resistor Q1, a first switching element Q2, a second switching element Q3, a third switching element Q4, a fourth switching element S1 and a mode selection switch
[ detailed description ] embodiments
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 2, a multifunctional charger according to an embodiment of the present invention is configured to be connected to a battery pack, and includes a housing 1, a positive terminal and a negative terminal that are disposed on the housing 1 and are matched with a positive electrode and a negative electrode of the battery pack, and a control circuit board that is mounted in the housing 1, where the control circuit board includes a control module U1, a charging module 3 and a voltage detection module 4 that are connected to the control module U1, and the control circuit board further includes a discharging module 5, and the discharging module 5 is connected to the positive terminal and the control module U1; the control module U1 stores a first voltage value and a second voltage value smaller than the first voltage value, the charger is provided with a charging mode and a discharging mode, when the charger is in the charging mode, the controller charges the battery pack to the first voltage value, when the charger is in the discharging mode, the control module U1 discharges the battery pack to the second voltage value, wherein the first voltage value is the full-charge voltage of the battery pack and is generally 4.2V, the second voltage value is a safe voltage and is generally not higher than 3.8V, and the control module U1 adopts an MCU (micro control unit).
The discharging module 5 includes a discharging resistor R0 and a first switching element Q1, one end of the discharging resistor R0 is connected to the positive terminal, the other end is connected to the first switching element Q1, the first switching element Q1 is grounded, the first switching element adopts a MOS transistor, the first switching element Q1 and the discharging resistor R0 control the discharging function of the charger, and the control module U1 controls the enabling of the first switching element Q1.
The voltage detection module 4 is composed of a voltage division circuit and a filter circuit, the voltage division circuit is connected to the filter circuit, the filter circuit is connected to the control module U1, the voltage division circuit comprises a voltage division resistor R1, a second switch element Q2 and a voltage division resistor R2 which are connected in series, one end of the voltage division resistor R1 is connected to the positive terminal, the other end of the voltage division resistor R1 is connected to the second switch element Q2, the other end of the second switch element Q2 is connected in series to the voltage division resistor R2, the voltage division resistor R2 is grounded, the detection of the voltage of the battery pack is controlled through the second switch element Q2, the sampled voltage value is input into the control module U1, whether the voltage value reaches the full-level voltage is judged through the operation of the voltage division resistor, the third switch element Q3 and the fourth switch element Q4 are controlled to turn off and charge or whether the voltage value is discharged to the safe voltage is judged, and the first switch element Q1 is controlled to turn off and discharge, the control module U1 controls the second switching element Q2 to enable the voltage of the battery pack, and the second switching element is a MOS transistor.
The control circuit board further comprises a mode selection switch S1, which is used for converting a charging mode and a discharging mode of the battery pack, the mode selection switch S1 is a key switch, the key switch is pressed to output a low level signal to the control module U1, the control module U1 detects the low level signal, and alternately switches the charging mode and the discharging mode, namely, the charging mode and the discharging mode are selected through the mode selection switch S1, the charging mode is selected according to S1, and the discharging mode is selected according to S1, and the operation is cycled in sequence, so that the two modes are prevented from being effective at the same time, the safety performance of the battery pack is further improved, the battery pack can be charged at any time in order to adapt to the personalized requirements of users, the daily work requirements are met, and the flexibility is high.
The mode selection switch is connected with an indicator lamp 2 through a control module U1, the indicator lamp 2 is divided into a charging mode indicator lamp LED1 and a discharging mode indicator lamp LED2, the indicator lamp 2 adopts a light emitting diode, the anode is connected with a pull-up power supply, the cathode is connected with the control module U1, the control module U1 is conducted when outputting low level, when the battery pack is in a charging mode state, the charging mode indicator lamp LED1 flashes, and the discharging mode indicator lamp LED2 extinguishes; when the battery pack is in the discharge mode state, the discharge mode indicator light LED2 flashes and the charge mode indicator light LED1 goes off, wherein the indicator light may also adopt a bicolor LED light to indicate the current mode, such as charging to a red light and discharging to a green light.
The charging module 3 is composed of a third switching element Q3, a charging resistor R3 and a fourth switching element Q4, one end of the third switching element Q3 is connected to the positive terminal of the charger, the other end of the third switching element Q3 is connected to the charging resistor R3, the other end of the charging resistor R3 is connected to the fourth switching element Q4, the fourth switching element Q4 is grounded, wherein the control module controls the fourth switch Q4 to be turned on, that is, the third switching element Q3 is turned on.
The working principle of the utility model is as follows:
if a user needs to charge and discharge the first battery pack and the second battery pack, the full-charge voltage threshold of a single battery cell in the control module U1 is set to 4.2V, the safe voltage threshold is set to 3.8V, and the charger is powered on (the charger is powered on in a charging mode by default every time):
s1: when a first battery pack is inserted into the charger, the charger starts to work, the control module U1 controls to switch on the second switch element Q2 and detect the voltage of the battery pack, when the voltage of the battery pack detected by the control module U1 is lower than the full-electricity voltage of 4.2V, the control module U1 switches on the fourth switch element Q4, the third switch element Q3 is switched on, the charger starts to charge the battery pack, the charging mode indicator light LED1 is in a flashing state at the moment, and the discharging mode indicator light LED2 is in an extinguishing state; when the voltage detected by the control module U1 is 4.2V, the control module U1 controls to turn off the fourth switching element Q4, and further the third switching element Q3 is also turned off, the charger stops charging the battery pack, the charging mode indicator light LED1 is in a normally on state at this time, and the discharging mode indicator light LED2 is in an off state.
S2: when the first battery pack is charged completely or the battery pack is in a full-power state, a user presses the mode selection switch S1 to switch the original charging mode to a discharging mode, the charging mode indicator light LED1 is in an off state at the moment, the discharging mode indicator light LED2 is in a flashing state, when the control module U1 detects that the voltage of the battery pack is not higher than the voltage of 3.8V, the discharging action of the battery pack is stopped, the charging mode indicator light LED1 is in an off state at the moment, and the discharging mode indicator light LED2 is in a normally-on state, which indicates that the battery pack meets the long-time storage and transportation requirements.
S3: when the first battery pack is discharged, the first battery pack is taken out, the charging mode indicator light LED1 is in an off state, the discharging mode indicator light LED2 is in a normally on state and is in a discharging mode, when the second battery pack is inserted into the charger, the voltage of the second battery pack is detected by the control module U1, if the voltage value is higher than the safe voltage 3.8V, the control module U1 turns on the first switching element Q1, further, the discharge resistor R0 starts to discharge the battery pack, the charge mode indicator LED1 is turned off, the discharge mode indicator LED2 is turned on, when the control module U1 detects that the voltage of the battery pack is not higher than the safe voltage of 3.8V, the first switch element Q1 is closed, the battery pack is stopped to be discharged, the charging mode indicator light LED1 is in an off state, the discharging mode indicator light LED2 is in a normally on state, and then the second battery pack is taken out; if the voltage value is lower than the safe voltage of 3.8V, the charger does not perform any charging and discharging operation, the charging mode indicator light LED1 is in an off state at the moment, the discharging mode indicator light LED2 is in a normally on state, namely, the second battery pack is in an undischargeable state, at the moment, a user prompts the operable mode selection switch S1 through the indicator light to charge the battery pack, the user can freely select the charging mode or the discharging mode through the mode selection switch S1, the flexibility is high, and finally the battery pack meeting the storage and transportation requirements is obtained.
According to the multifunctional charger, the discharging module is additionally arranged in the charger, when a user needs to store or transport the charged battery pack for a long time, the discharging mode can be selected through the mode selection switch on the charger, and the voltage of the battery pack is detected in real time through the voltage detection module, so that the voltage of the battery pack in a full-charge state can be accurately and reasonably discharged to a safe voltage and automatically stopped to be discharged, the situation that the user finds a discharging load or an electric tool to perform discharging operation of the battery pack in a laborious way when going to charge is avoided, and the purposes of reducing the activity of the battery pack and improving the safety coefficient of the battery pack are finally achieved.
The present invention is not limited to the above-mentioned embodiments, and those skilled in the art can easily understand that there are many other alternatives to the multifunctional charger of the present invention without departing from the principle and scope of the present invention, and the protection scope of the present invention is subject to the contents of the claims.
Claims (10)
1. The utility model provides a multifunctional charger for be connected with the battery package, it includes the casing, locates on the casing and with battery package positive negative pole assorted positive terminal, negative terminal and install the control circuit board in the casing, control circuit board includes control module, connects in control module's the module and the voltage detection module of charging, its characterized in that: the control circuit board further comprises a discharging module, and the discharging module is connected with the positive terminal and the control module; the control module stores a first voltage value and a second voltage value smaller than the first voltage value, the charger is provided with a charging mode and a discharging mode, when the charger is in the charging mode, the control module charges the battery pack to the first voltage value, and when the charger is in the discharging mode, the controller discharges the battery pack to the second voltage value.
2. The multi-functional charger of claim 1, wherein: the discharging module comprises a discharging resistor and a first switching element, one end of the discharging resistor is connected to the positive electrode terminal, the other end of the discharging resistor is connected to the first switching element, and the first switching element is grounded.
3. The multi-functional charger of claim 1, wherein: the voltage detection module comprises a voltage division circuit and a filter circuit, the voltage division circuit is connected to the filter circuit, and the filter circuit is connected to the control module.
4. The multi-functional charger of claim 3, wherein: the voltage division circuit comprises a voltage division resistor R1, a second switching element and a voltage division resistor R2, one end of the voltage division resistor R1 is connected to the positive electrode terminal, the other end of the voltage division resistor R1 is connected to the second switching element, and the other end of the second switching element is connected in series to the voltage division resistor R2.
5. The multi-functional charger of claim 1, wherein: the control circuit board further comprises a mode selection switch, the mode selection switch is used for converting a charging mode and a discharging mode of the battery pack, and the mode selection switch is connected with an indicator lamp through the control module.
6. The multi-functional charger of claim 5, wherein: the mode selection switch is a key switch, the key switch is pressed to output a low level signal to the control module, and the control module detects the low level signal to alternately switch the charging mode and the discharging mode.
7. The multi-functional charger of claim 5, wherein: the indicating lamps are divided into a charging mode indicating lamp and a discharging mode indicating lamp which are both connected to the control module, when the battery pack is in a charging mode state, the charging mode indicating lamp flashes, and the discharging mode indicating lamp is turned off; when the battery pack is in a discharge mode state, the discharge mode indicator lamp flashes, and the charge mode indicator lamp extinguishes.
8. The multi-functional charger according to claim 5 or 7, characterized in that: the indicating lamp adopts a light emitting diode, the anode of the indicating lamp is connected with a pull-up power supply, the cathode of the indicating lamp is connected with the control module, and the control module is conducted when outputting a low level.
9. The multi-functional charger of claim 7, wherein: the charging module comprises a third switching element, a charging resistor and a fourth switching element, one end of the third switching element is connected to the positive terminal of the charger, the other end of the third switching element is connected to the charging resistor, the other end of the charging resistor is connected to the fourth switching element, and the fourth switching element is grounded.
10. The multi-functional charger of claim 1, wherein: the first voltage value is full electricity voltage and 4.2V, and the second voltage value is safe voltage and is not higher than 3.8V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121738183.9U CN215870827U (en) | 2021-07-28 | 2021-07-28 | Multifunctional charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121738183.9U CN215870827U (en) | 2021-07-28 | 2021-07-28 | Multifunctional charger |
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| Publication Number | Publication Date |
|---|---|
| CN215870827U true CN215870827U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121738183.9U Active CN215870827U (en) | 2021-07-28 | 2021-07-28 | Multifunctional charger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115001116A (en) * | 2022-08-02 | 2022-09-02 | 深圳市驰普科达科技有限公司 | Charger charging control method, controller and charger |
| CN115833331A (en) * | 2023-01-09 | 2023-03-21 | 中天宽带技术有限公司 | Charging and discharging switching circuit for energy storage system, and implementation method and device |
-
2021
- 2021-07-28 CN CN202121738183.9U patent/CN215870827U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115001116A (en) * | 2022-08-02 | 2022-09-02 | 深圳市驰普科达科技有限公司 | Charger charging control method, controller and charger |
| CN115833331A (en) * | 2023-01-09 | 2023-03-21 | 中天宽带技术有限公司 | Charging and discharging switching circuit for energy storage system, and implementation method and device |
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