CN210297324U - Battery charging circuit and battery of electric tool - Google Patents
Battery charging circuit and battery of electric tool Download PDFInfo
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- CN210297324U CN210297324U CN201921740866.0U CN201921740866U CN210297324U CN 210297324 U CN210297324 U CN 210297324U CN 201921740866 U CN201921740866 U CN 201921740866U CN 210297324 U CN210297324 U CN 210297324U
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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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Abstract
The utility model discloses a battery charging circuit and a battery of an electric tool, which are arranged in the battery, and the battery is electrically connected with the electric tool, comprising a control module for detecting the voltage of the battery and sending out a control signal; the display unit is used for responding to the control signal, displaying the percentage of the electric quantity of the battery, and is electrically connected with the battery to form a power supply loop for supplying power to the display unit; the switch unit is connected in the power supply loop in series and responds to the control signal to control the on-off of the power supply loop; the control module detects the low level signal, and then outputs the low level signal to control the switch unit to be disconnected, so that the power supply circuit is disconnected, and the display unit does not display the electric quantity; the control module detects a high level signal, and then outputs the high level signal to control the switch unit to be conducted, so that the power supply loop is conducted, and the display unit displays the electric quantity; when the battery is fully charged or nearly fully charged, the display unit displays the power and displays the change of the power in the form of percentage.
Description
Technical Field
The utility model relates to a battery charging field especially relates to an electric tool's battery charging circuit and battery.
Background
The electric tools mainly comprise an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an electric impact drill, a concrete vibrator, an electric planer and the like, and when the electric tools work, a power socket is difficult to be arranged nearby, so that the conventional electric tools are generally provided with rechargeable batteries and regularly charge the rechargeable batteries, and the moving requirements of the electric tools are met;
the conventional delavay DCB209 series electric tool cannot accurately display the charging electric quantity in the charging process, does not have the function of automatically displaying the percentage of the electric quantity when the electric tool is fully charged, and can cause the situation that the electric tool is overcharged or damaged even if the electric tool is continuously charged after the electric tool is fully charged due to the negligence of a user, and can even cause unsafe accidents such as fire explosion and the like, so that the problem is urgently needed to be solved.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the above-mentioned technique, the utility model provides an electric tool's battery charging circuit and battery has solved current morally DCB209 series electric tool's battery and when carrying out full charge, does not have the electric quantity to show the problem of reminding the user.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a battery charging circuit of an electric tool is arranged in a battery, the battery is electrically connected with the electric tool, and the battery charging circuit comprises a control module, a charging module and a control module, wherein the control module is used for detecting the voltage of the battery and sending out a control signal; the display unit is used for responding to the control signal, displaying the percentage of the electric quantity of the battery, and is electrically connected with the battery to form a power supply loop for supplying power to the display unit; the switch unit is connected in the power supply loop in series and responds to the control signal to control the on-off of the power supply loop; the control module detects the low level signal, and then outputs the low level signal to control the switch unit to be disconnected, so that the power supply circuit is disconnected, and the display unit does not display the electric quantity; the control module detects the high level signal, and then outputs the high level signal and controls the switch unit to switch on, and then the power supply loop switches on, and the display element carries out the electric quantity display.
The switch unit comprises a mos tube, the S pole of the mos tube is connected with the negative pole of the battery, the D pole of the mos tube is connected with the display unit, the display unit is further connected with the positive pole of the battery, and the control module is connected with the G pole of the mos tube and controls the on-off of the mos tube so as to control the on-off of the power supply loop.
Wherein, the quantity of battery is 15, and control module detects the electric quantity of 15 batteries total and shows.
The battery voltage stabilizing device comprises a battery, a control module and a voltage stabilizing module, wherein the battery voltage is detected by the control module, the voltage stabilizing module is coupled between the battery and the control module, and the voltage stabilizing module is used for stabilizing the voltage signal of the battery detected by the control module.
The display unit comprises a plurality of display tubes, the number of the control module corresponding to the display tubes is provided with a plurality of output pins, and the plurality of output pins respectively output different control signals to control the opening and closing of the display tubes corresponding to the display tubes.
The device comprises a detection unit and a display switch, wherein the detection unit is electrically connected with the display switch, the display switch is turned on or turned off, then the detection unit outputs a high level or low level signal, and the control module responds to the high level or low level signal to control the switch unit to be turned on or turned off.
Still provide an electric tool's battery, including shell and the battery and the circuit board of holding in the shell, the circuit board includes foretell electric tool's battery charging circuit, still is provided with the display screen that is connected with electric tool matched with output interface and with the circuit board electricity on the shell, and the display screen is used for carrying out the percentage to the electric quantity of battery and shows.
The number of the batteries is 15, the 15 batteries are all accommodated in the shell, the batteries are arranged in a5 x 3 mode, and the side parts of the batteries are mutually attached.
Wherein, one side of display screen still is provided with the display switch, and the display switch is connected with the circuit board electricity.
The utility model has the advantages that: compared with the prior art, the battery charging circuit and the battery of the electric tool are arranged in the battery, and the battery is electrically connected with the electric tool and comprises a control module for detecting the voltage of the battery and sending out a control signal; the display unit is used for responding to the control signal, displaying the percentage of the electric quantity of the battery, and is electrically connected with the battery to form a power supply loop for supplying power to the display unit; the switch unit is connected in the power supply loop in series and responds to the control signal to control the on-off of the power supply loop; the control module detects the low level signal, and then outputs the low level signal to control the switch unit to be disconnected, so that the power supply circuit is disconnected, and the display unit does not display the electric quantity; the control module detects a high level signal, and then outputs the high level signal to control the switch unit to be conducted, so that the power supply loop is conducted, and the display unit displays the electric quantity; when the battery is fully charged or nearly fully charged, the display unit displays the power and displays the change of the power in the form of percentage.
Drawings
FIG. 1 is a main block diagram of the present invention;
fig. 2 is a detailed block diagram of the present invention;
FIG. 3 is a circuit diagram illustrating the operation of the present invention;
fig. 4 is a circuit diagram of a switching unit of the present invention;
FIG. 5 is a diagram of a battery structure of the present invention
Fig. 6 is an exploded view of the battery structure of the present invention.
Description of the main elements
1. Electric tool 2 and battery
3. Control module 4, switch unit
5. Display unit 6 and detection unit
7. Display switch 8, shell
9. Display screen 10, output interface.
Detailed Description
In order to more clearly illustrate the technical solutions in the present technology, the drawings used in the description of the embodiments or the prior art will be described below.
Referring to fig. 1, the present embodiment provides a battery charging circuit of an electric tool, which is disposed in a battery 2, and the battery 2 is electrically connected to the electric tool 1, and includes a control module 3 for detecting a voltage of the battery 2 and sending a control signal; the display unit 5 is used for responding to the control signal, displaying the percentage of the electric quantity of the battery 2, and is electrically connected with the battery 2 to form a power supply loop for supplying power to the display unit 5; the switch unit 4 is connected in series in the power supply loop and responds to the control signal to control the on-off of the power supply loop; the control module 3 detects a low level signal, and then outputs the low level signal to control the switch unit 4 to be switched off, so that the power supply circuit is switched off, and the display unit 5 does not display the electric quantity; the control module 3 detects a high level signal, and then outputs the high level signal to control the switch unit 4 to be conducted, so that the power supply loop is conducted, and the display unit 5 displays the electric quantity; when the battery 2 is fully charged or nearly fully charged, the display unit 5 displays the power and displays the change of the power in the form of percentage; the user can directly obtain the information that battery 2 is full or is about to be full, timely take off battery 2, avoid battery 2 overcharge to take place danger.
Referring to fig. 1 to 4, the switch unit 4 of the present embodiment includes a mos tube, an S pole of the mos tube is connected to a negative pole of the battery 2, a D pole of the mos tube is connected to the display unit 5, the display unit 5 is further connected to a positive pole of the battery 2, and the control module 3 is connected to a G pole of the mos tube and controls on/off of the mos tube, so as to control on/off of the power supply loop; the type of the mos tube is an N-channel mos tube, the chip U2 is used as the control module 3, preferably, a chip with a type of HLX0311 is used as the control module 3, the chip U2 detects that the voltage of the battery is too high, then outputs a high level signal to the display unit 5, controls the content displayed by the display unit 5, and also outputs a high level signal to the G pole of the mos tube, at this time, the S pole and the D pole of the mos tube are connected, and further, the power supply loop is connected, the display unit 5 can display when powered on, and if the chip U2 detects that the voltage of the battery 2 is too low, then outputs a low level signal to the display unit 5, controls the content displayed by the display unit 5, and also outputs a low level signal to the G pole of the mos tube, at this time, the S pole and the D pole of the mos tube are disconnected, further, the power supply loop is disconnected, and the display unit 5 cannot display the content; and then realized that the electric quantity of battery 2 does not show when normal, carry out the electric quantity display when full charge or will full charge, can set up battery 2 voltage and be greater than the setting value, display element 5 just carries out automatic display, can control the size of setting value through setting up the turn-on voltage of mos pipe.
Referring to fig. 3 and fig. 6, the number of the batteries 2 in the embodiment is 15, and the control module 3 detects and displays the total amount of electricity of the 15 batteries; detecting the whole battery 2; the battery voltage stabilizing device further comprises a voltage stabilizing module, wherein the voltage stabilizing module is coupled between the battery 2 and the control module 3 and is used for stabilizing the battery voltage signal detected by the control module 3; a voltage stabilizing module is selected as a chip U1, preferably a chip with the model number of ME6203A50, if the voltage of the battery 2 is overhigh, the voltage of the circuit is stabilized at a fixed value, and the chip U2 is prevented from being burnt out due to overhigh voltage; the display unit 5 of this embodiment includes a plurality of display tubes, the control module 3 is provided with a plurality of output pins corresponding to the number of the display tubes, and the plurality of output pins respectively output different control signals to control the opening and closing of the display tubes corresponding to the display tubes; preferably 4 digital display tubes, i.e. "188%", are included, with each display unit 5 being controlled individually; the embodiment further comprises a detection unit 6 and a display switch 7, wherein the detection unit 6 is electrically connected with the display switch 7, the display switch 7 is turned on or turned off, the detection unit 6 outputs a high level or low level signal, and the control module 3 responds to the high level or low level signal to control the switch unit 4 to be turned on or turned off; when the battery is not charged, the user can press the display switch 7, and the display unit 5 can display the electric quantity in real time.
Referring to fig. 5 and 6, the present embodiment further provides a battery for an electric tool, which includes a housing 8, and a battery and a circuit board accommodated in the housing 8, where the circuit board includes the battery charging circuit of the electric tool, the housing 8 is further provided with an output interface 10 matched with the electric tool and a display screen 9 electrically connected to the circuit board, and the display screen 9 is used for displaying the percentage of the electric quantity of the battery; when the battery is fully charged or nearly fully charged, the display screen 9 displays the electric quantity, and displays the change of the electric quantity in a percentage mode; a user can directly acquire information that the battery is fully charged or is about to be fully charged, and take down the battery in time, so that the danger of overcharge of the battery is avoided; the number of the batteries of the embodiment is 15, the 15 batteries are all accommodated in the shell 8, and the batteries are arranged according to a5 × 3 mode, and the side parts of the batteries are mutually attached, so that the internal space of the shell 8 is greatly saved, and the capacity of the whole battery is increased; one side of the display screen 9 of this embodiment still is provided with the display switch 7, and the display switch 7 is connected with the circuit board electricity, can realize even when not fully charged, and the user presses down the display switch 7, and the display screen 9 still can show real-time electric quantity.
The utility model has the advantages that:
(1) when the battery is fully charged or nearly fully charged, the display unit displays the electric quantity and displays the change of the electric quantity in a percentage mode; a user can directly acquire information that the battery is fully charged or is about to be fully charged, and take down the battery in time, so that the danger of overcharge of the battery is avoided;
(2) the display unit automatically displays the set value by setting the conduction voltage of the mos tube;
(3) when the battery is not charged, a user presses the display switch, and the display unit can also display the electric quantity in real time.
The above disclosure is only one or several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (9)
1. A battery charging circuit of an electric tool is arranged in a battery, and the battery is electrically connected with the electric tool, and the battery charging circuit is characterized by comprising
The control module is used for detecting the voltage of the battery and sending out a control signal;
the display unit is used for responding to the control signal, displaying the percentage of the electric quantity of the battery, and is electrically connected with the battery to form a power supply loop for supplying power to the display unit;
the switch unit is connected in the power supply loop in series and responds to the control signal to control the on-off of the power supply loop;
the control module detects a low level signal, and then outputs the low level signal to control the switch unit to be switched off, so that the power supply circuit is switched off, and the display unit does not display the electric quantity; the control module detects a high level signal, then outputs the high level signal to control the switch unit to be switched on, and then the power supply loop is switched on, and the display unit displays the electric quantity.
2. The battery charging circuit of the electric tool as claimed in claim 1, wherein the switch unit comprises a mos tube, the S pole of the mos tube is connected to the negative pole of the battery, the D pole of the mos tube is connected to a display unit, the display unit is further connected to the positive pole of the battery, and the control module is connected to the G pole of the mos tube and controls the on-off of the mos tube, so as to control the on-off of the power supply loop.
3. The battery charging circuit of claim 1, wherein the number of the batteries is 15, and the control module detects and displays the total amount of electricity of the 15 batteries.
4. The battery charging circuit of the power tool of claim 1, further comprising a voltage regulation module coupled between the battery and the control module, the voltage regulation module configured to stabilize the control module from detecting the battery voltage signal.
5. The battery charging circuit of claim 1, wherein the display unit comprises a plurality of display tubes, the control module is provided with a plurality of output pins corresponding to the number of the display tubes, and the plurality of output pins respectively output different control signals to control the display tubes corresponding to the display tubes to be opened and closed.
6. The battery charging circuit of the electric tool according to claim 1, further comprising a detection unit and a display switch, wherein the detection unit is electrically connected with the display switch to turn on or off the display switch, the detection unit further outputs a high level or low level signal, and the control module controls the switch unit to be turned on or off in response to the high level or low level signal.
7. A battery of an electric tool is characterized by comprising a shell, and a battery and a circuit board which are accommodated in the shell, wherein the circuit board comprises a battery charging circuit of the electric tool as claimed in any one of claims 1 to 6, an output interface matched with the electric tool and a display screen electrically connected with the circuit board are further arranged on the shell, and the display screen is used for displaying the electric quantity of the battery in percentage.
8. The battery of claim 7, wherein the number of the batteries is 15, the 15 batteries are all accommodated in the housing, and the batteries are arranged in a5 x 3 manner and the side parts of the batteries are attached to each other.
9. The battery of claim 7, wherein a display switch is further disposed on one side of the display screen, and the display switch is electrically connected to the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921740866.0U CN210297324U (en) | 2019-10-17 | 2019-10-17 | Battery charging circuit and battery of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921740866.0U CN210297324U (en) | 2019-10-17 | 2019-10-17 | Battery charging circuit and battery of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297324U true CN210297324U (en) | 2020-04-10 |
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ID=70066369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921740866.0U Active CN210297324U (en) | 2019-10-17 | 2019-10-17 | Battery charging circuit and battery of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210297324U (en) |
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2019
- 2019-10-17 CN CN201921740866.0U patent/CN210297324U/en active Active
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