CN213275895U - Lithium battery electric quantity display device and laser demarcation device using same - Google Patents
Lithium battery electric quantity display device and laser demarcation device using same Download PDFInfo
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- CN213275895U CN213275895U CN202022368299.XU CN202022368299U CN213275895U CN 213275895 U CN213275895 U CN 213275895U CN 202022368299 U CN202022368299 U CN 202022368299U CN 213275895 U CN213275895 U CN 213275895U
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- electric quantity
- metering chip
- quantity metering
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Abstract
The utility model discloses a lithium battery electric quantity display device and a laser demarcation device using the same, wherein the lithium battery electric quantity display device comprises a current sampling circuit, an electric quantity metering chip, a main controller and a display module; the current sampling circuit is connected with a charge and discharge circuit of the lithium battery and is suitable for collecting the discharge current of the lithium battery; the electric quantity metering chip is connected with the current sampling circuit and is suitable for receiving the discharge current sent by the current sampling circuit and obtaining the residual capacity of the lithium battery according to the discharge current; the main controller is respectively connected with the electric quantity metering chip and the display module, and is suitable for receiving the residual capacity of the lithium battery sent by the electric quantity metering chip and controlling the display module to display. The utility model discloses can the residual capacity of real-time supervision lithium cell and show, the convenient in time charges.
Description
Technical Field
The utility model relates to a lithium cell power display device and use its laser demarcation appearance.
Background
The laser demarcation device is widely applied to the fields of construction engineering and the like to assist workers in construction. The internal battery is composed of 3.7V lithium batteries which are connected in parallel. The electric quantity display in the current market judges the electric quantity of the battery by setting the voltage value of the battery, and under the condition of the same electric quantity of the battery, the voltage is different during charging or discharging and no-load, so that the electric quantity display is very inaccurate, the battery endurance time is misjudged, and the battery is suddenly out of power in the external construction process, so that the project is delayed.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a lithium cell power display device, it can the real-time supervision lithium cell the residual capacity and show out, convenient in time charge.
In order to solve the technical problem, the technical scheme of the utility model is that: a lithium battery electric quantity display device comprises a current sampling circuit, an electric quantity metering chip, a main controller and a display module; wherein the content of the first and second substances,
the current sampling circuit is connected with a charge-discharge circuit of the lithium battery and is suitable for collecting the discharge current of the lithium battery;
the electric quantity metering chip is connected with the current sampling circuit and is suitable for receiving the discharge current sent by the current sampling circuit and obtaining the residual capacity of the lithium battery according to the discharge current;
the main controller is respectively connected with the electric quantity metering chip and the display module, and is suitable for receiving the residual capacity of the lithium battery sent by the electric quantity metering chip and controlling the display module to display.
Furthermore, the electric quantity metering chip is also connected with a charge-discharge circuit of the lithium battery and is also suitable for collecting the discharge voltage of the lithium battery;
the main controller is also suitable for receiving the discharge current and the discharge voltage of the lithium battery sent to the main controller by the electric quantity metering chip, obtaining the real-time output power of the lithium battery according to the discharge current and the discharge voltage, and controlling the display module to display the real-time output power.
Furthermore, the electric quantity metering chip is also suitable for obtaining the endurance time of the lithium battery according to the residual capacity and the discharge current of the lithium battery;
the main controller is also suitable for receiving the endurance time of the lithium battery sent by the electric quantity metering chip and controlling the display module to display.
Furthermore, the electric quantity metering chip is also suitable for obtaining the capacity percentage of the lithium battery according to the rated capacity and the residual capacity of the lithium battery;
the main controller is also suitable for receiving the capacity percentage of the lithium battery sent to the main controller by the electric quantity metering chip and controlling the display module to display the capacity percentage.
Further for convenient understanding lithium cell information, lithium cell electric quantity display device still includes bluetooth module, main control unit still links to each other with cell-phone APP through bluetooth module, still is suitable for the lithium cell information transmission who obtains it to cell-phone APP through bluetooth module.
Further, the electric quantity metering chip is connected with the main controller through an I2C bus.
Further, the current sampling circuit comprises a sampling resistor connected in series in a charging and discharging circuit of the lithium battery, and the sampling resistor is connected with the electric quantity metering chip in parallel.
Further, the electric quantity metering chip comprises an EG2805 chip and peripheral circuits thereof.
Further, the display module is an LED display module.
The utility model also provides a laser demarcation device, it includes lithium cell power display device.
After the technical scheme is adopted, the discharging current of the lithium battery is collected through the current sampling circuit, the electric quantity metering chip integrates the discharging current to obtain the used capacity, the residual capacity of the lithium battery is obtained according to the rated capacity and the used capacity and is sent to the main controller, and the main controller controls the display module to display the residual capacity of the lithium battery; the utility model discloses still convenience of customers in time knows the time of endurance and the capacity percentage of lithium cell, and further convenience of customers in time charges for the lithium cell.
Drawings
Fig. 1 is a schematic block diagram of a lithium battery power display device of the present invention;
fig. 2 is a circuit diagram of the electric quantity measuring chip of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
Example one
As shown in fig. 1 and 2, the lithium battery electric quantity display device comprises a current sampling circuit 1, an electric quantity metering chip 2, a main controller 3 and a display module 4; wherein the content of the first and second substances,
the current sampling circuit 1 is connected with a charge-discharge circuit of the lithium battery and is suitable for collecting the discharge current of the lithium battery;
the electric quantity metering chip 2 is connected with the current sampling circuit 1 and is suitable for receiving the discharge current sent by the current sampling circuit 1 and obtaining the residual capacity of the lithium battery according to the discharge current;
the main controller 3 is respectively connected with the electric quantity metering chip 2 and the display module 4, and is suitable for receiving the residual capacity of the lithium battery sent by the electric quantity metering chip 2 and controlling the display module 4 to display.
In this embodiment, the main controller is selected as model N76E003AT20, but is not limited thereto.
Specifically, gather the discharge current of lithium cell through current sampling circuit 1, electric quantity measurement chip 2 carries out the integral point to discharge current, obtains the capacity of having used, obtains the residual capacity of lithium cell and sends to main control unit 3 according to rated capacity and the capacity of having used, and main control unit 3 controls display module 4 and shows the residual capacity of lithium cell, the utility model discloses the residual capacity that can the real-time supervision lithium cell shows, conveniently in time charges, avoids the lithium cell of the appearance of throwing the line of laser in the work progress that goes out not to have the electricity suddenly, the utility model discloses the integrated level is high, and occupation space is little, and the reliability is high.
In this embodiment, the electric quantity metering chip 2 is further connected to a charge and discharge circuit of the lithium battery, and is further adapted to collect a discharge voltage of the lithium battery;
the main controller 3 is further adapted to receive the discharge current and the discharge voltage of the lithium battery sent to the electric quantity metering chip 2, obtain the real-time output power of the lithium battery according to the discharge current and the discharge voltage, and control the display module 4 to display the real-time output power.
In this embodiment, the electric quantity measuring chip 2 is further adapted to obtain the endurance time of the lithium battery according to the remaining capacity and the discharge current of the lithium battery;
the main controller 3 is also suitable for receiving the endurance time of the lithium battery sent to the main controller by the electric quantity metering chip 2 and controlling the display module 4 to display the endurance time.
In this embodiment, the electric quantity metering chip 2 is further adapted to obtain the capacity percentage of the lithium battery according to the rated capacity and the remaining capacity of the lithium battery;
the main controller 3 is further adapted to receive the capacity percentage of the lithium battery sent to the main controller by the electric quantity metering chip 2 and control the display module 4 to display the capacity percentage.
Specifically, the utility model discloses still convenience of customers in time knows the time of endurance and the capacity percentage of lithium cell, and further convenience of customers in time charges for the lithium cell.
It should be noted that, the remaining capacity of the lithium battery obtained by the electricity quantity metering chip 2 according to the discharge current, the endurance time of the lithium battery obtained according to the remaining capacity of the lithium battery and the discharge current, and the capacity percentage of the lithium battery obtained according to the rated capacity and the remaining capacity of the lithium battery are all inherent properties of the application of the electricity quantity metering chip 2, and no improvement of the program is involved.
As shown in fig. 1, in order to know the information of the lithium battery conveniently, the lithium battery power display device further comprises a bluetooth module 5, the main controller 3 is further connected with the mobile phone APP6 through the bluetooth module 5, and is further suitable for sending the obtained lithium battery information to the mobile phone APP6 through the bluetooth module 5.
In this embodiment, the lithium battery information includes the remaining capacity, the real-time output power, the endurance time, and the capacity percentage of the lithium battery.
As shown in fig. 2, the electricity quantity metering chip 2 is connected with the main controller 3 through an I2C bus.
As shown in fig. 2, the current sampling circuit 1 includes a sampling resistor connected in series in a charging and discharging circuit of a lithium battery, and the sampling resistor is connected in parallel with the electric quantity metering chip 2. The sampling resistor is resistor R6 in fig. 2.
As shown in fig. 2, the electric quantity metering chip 2 includes an EG2805 chip and its peripheral circuits. The EG2805 chip is U1 in fig. 2.
In this embodiment, the display module 4 is an LED display module.
Example two
A laser demarcation device comprises the lithium battery electric quantity display device in the first embodiment.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A lithium battery electric quantity display device is characterized in that,
the device comprises a current sampling circuit (1), an electric quantity metering chip (2), a main controller (3) and a display module (4); wherein the content of the first and second substances,
the current sampling circuit (1) is connected with a charge-discharge circuit of the lithium battery and is suitable for collecting the discharge current of the lithium battery;
the electric quantity metering chip (2) is connected with the current sampling circuit (1) and is suitable for receiving the discharge current sent by the current sampling circuit (1) and obtaining the residual capacity of the lithium battery according to the discharge current;
the main controller (3) is respectively connected with the electric quantity metering chip (2) and the display module (4), and is suitable for receiving the residual capacity of the lithium battery sent by the electric quantity metering chip (2) and controlling the display module (4) to display.
2. The device for displaying the amount of electricity in a lithium battery according to claim 1,
the electric quantity metering chip (2) is also connected with a charge-discharge circuit of the lithium battery and is also suitable for collecting the discharge voltage of the lithium battery;
the main controller (3) is also suitable for receiving the discharge current and the discharge voltage of the lithium battery sent to the electric quantity metering chip (2), obtaining the real-time output power of the lithium battery according to the discharge current and the discharge voltage, and controlling the display module (4) to display.
3. The device for displaying the amount of electricity in a lithium battery according to claim 1,
the electric quantity metering chip (2) is also suitable for obtaining the endurance time of the lithium battery according to the residual capacity and the discharge current of the lithium battery;
the main controller (3) is also suitable for receiving the endurance time of the lithium battery sent to the main controller by the electric quantity metering chip (2) and controlling the display module (4) to display the endurance time.
4. The device for displaying the amount of electricity in a lithium battery according to claim 1,
the electric quantity metering chip (2) is also suitable for obtaining the capacity percentage of the lithium battery according to the rated capacity and the residual capacity of the lithium battery;
the main controller (3) is also suitable for receiving the capacity percentage of the lithium battery sent to the main controller by the electric quantity metering chip (2) and controlling the display module (4) to display the capacity percentage.
5. The device for displaying electric quantity of lithium battery according to any one of claims 1 to 4,
still include bluetooth module (5), main control unit (3) still link to each other with cell-phone APP (6) through bluetooth module (5), still are suitable for through bluetooth module (5) with its lithium cell information transmission who obtains to cell-phone APP (6).
6. The device for displaying the amount of electricity in a lithium battery according to claim 1,
the electric quantity metering chip (2) is connected with the main controller (3) through an I2C bus.
7. The device for displaying the amount of electricity in a lithium battery according to claim 1,
the current sampling circuit (1) comprises a sampling resistor connected in series in a charging and discharging circuit of the lithium battery, and the sampling resistor is connected with the electric quantity metering chip (2) in parallel.
8. The device for displaying the amount of electricity in a lithium battery according to claim 1,
the electricity metering chip (2) comprises an EG2805 chip and peripheral circuits thereof.
9. The device for displaying the amount of electricity in a lithium battery according to claim 1,
the display module (4) is an LED display module.
10. A laser demarcation device is characterized in that,
the lithium battery electric quantity display device comprises the lithium battery electric quantity display device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022368299.XU CN213275895U (en) | 2020-10-22 | 2020-10-22 | Lithium battery electric quantity display device and laser demarcation device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022368299.XU CN213275895U (en) | 2020-10-22 | 2020-10-22 | Lithium battery electric quantity display device and laser demarcation device using same |
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| Publication Number | Publication Date |
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| CN213275895U true CN213275895U (en) | 2021-05-25 |
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| CN202022368299.XU Active CN213275895U (en) | 2020-10-22 | 2020-10-22 | Lithium battery electric quantity display device and laser demarcation device using same |
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