Digital voltmeter

Abstract

The utility model relates to the technical field of voltage detection. A digital voltmeter comprises an acquisition module, a processing module and a display module. The acquisition module is used for acquiring voltage data and state data of the battery, and the state data comprises a charging state or an uncharged state; the processing module outputs electric quantity data based on the voltage data, updates the charging times based on the state data and outputs the updated charging times; and the display module is used for receiving and displaying the voltage data, the electric quantity data and the charging times. The charging device is connected with the storage battery, directly acquires the electric quantity of the storage battery through the acquisition module, directly displays the voltage and the electric quantity of the battery, acquires the charging times, can observe the charging times in real time, can observe the charging condition of the storage battery in real time, and determines the service life of the battery, thereby reducing the potential safety hazard caused by the damage of the storage battery due to short service life.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage detection, in particular to a digital voltmeter. Background Art

[0002] A voltmeter is an instrument for measuring voltage. A mechanical voltmeter usually consists of a permanent magnet and a coil. By energizing the coil to generate a magnetic field, the pointer can move to display the voltage of the device.

[0003] In order to display the battery power of an electric vehicle, a corresponding digital display voltmeter is usually set on the electric vehicle. After obtaining the voltage value, the voltage value is converted into a battery capacity value to reduce the situation that the vehicle cannot run during the journey due to insufficient battery power. However, after long-term use, the number of battery charges will affect the battery life, and it is impossible to determine the battery life, which also poses a certain safety hazard during driving. Summary of the Utility Model

[0004] To solve the problems that the number of battery charges in the prior art will affect the battery life and it is impossible to determine the battery life, which also poses a certain safety hazard during driving, the present application provides a digital voltmeter, and the specific solution is as follows.

[0005] A digital voltmeter includes an acquisition module, a processing module, and a display module;

[0006] The acquisition module is used to acquire the voltage data and status data of the battery, and the status data includes the charging status or the non-charging status;

[0007] The processing module outputs the power data based on the voltage data, and the processing module updates the number of charges based on the status data and outputs the updated number of charges;

[0008] The display module is used to receive the voltage data, power data, and number of charges for display.

[0009] By adopting the above technical solution, directly connect with the battery, obtain the battery power through the acquisition module, and directly display the voltage and power of the battery. At the same time, obtain the number of charges, and the number of charges can be observed in real time, and the charging situation of the battery can be observed in real time to determine the battery life, thereby reducing the situation that the battery is damaged due to insufficient service life and posing a safety hazard.

[0010] Optionally, it further includes a reset module. The reset module is used to output a reset signal in response to the user's operation, and the processing module resets the number of charges in response to the reset signal.

[0011] By adopting the above technical solution, a reset module is set. When the battery is replaced, the counted number of charges can be reset, and the voltmeter can still be used normally after the battery is replaced, improving the reuse rate.

[0012] Optionally, it further includes a judgment module for judging the battery type and outputting battery category data, and the processing module outputs power data based on the battery category data and voltage data.

[0013] By adopting the above technical solution, a judgment module is set up, which can judge whether the battery is a lead-acid battery or a lithium battery, etc., making the power judgment of different batteries more accurate and reducing the situation of misreading the power.

[0014] Optionally, the processing module corresponds to a voltmeter according to the battery type and outputs the power value in percentage form.

[0015] By adopting the above technical solution, by comparing the voltmeters of different types of batteries, the accuracy of power judgment can be further improved, thus reducing the situation of misreading the power.

[0016] Optionally, the display module includes a plurality of display elements, and the display elements are set corresponding to the power value in percentage form output by the voltage processing unit.

[0017] By adopting the above technical solution, the display element can display the power in percentage form, thus realizing the accurate display of the power, further improving the convenience of power prompt, and facilitating the user to read the battery power.

[0018] Optionally, when the state received by the processing module includes the charging state, the processing module outputs a charging signal, and the display module displays "charging" corresponding to the charging signal.

[0019] By adopting the above technical solution, the display module can display the charging state and prompt the user of the charging state. When charging stops, the display module can stop working, which can more conveniently determine whether the battery is in the charging state.

[0020] Optionally, when the state received by the processing module includes the charging state, the processing module outputs a charging signal, and the display module displays "charging" corresponding to the charging signal.

[0021] By adopting the above technical solution, when the power is full, the status display module stops working, prompting the user to be able to unplug the power cord and drive.

[0022] Optionally, the display module includes a voltage display unit, a power display unit, and a charging times display unit. The voltage display unit is used to respond to the voltage data and display it, the power display unit is used to respond to the power data and display it, and the charging times display unit is used to respond to the charging times and display it.

[0023] By adopting the above technical solutions, multiple display units are set to display each data respectively, enabling the voltmeter to display each data more accurately and further improving the accuracy rate.

[0024] In summary, the present application has at least the following beneficial effects:

[0025] The present application solves the problem that the charging times of the battery in the prior art will affect the battery life and there are certain safety hazards in the driving process when the battery life cannot be determined. The present application sets an acquisition module and a processing module, and judges the service duration of the battery by acquiring the charging times. When the acquired charging times are more, it proves that the service duration of the battery is also longer, and the situation of insufficient battery life is likely to occur. Therefore, the situation where the battery cannot be used can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of this embodiment.

[0027] Figure 2 is a perspective view of this embodiment.

[0028] DESCRIPTION OF THE REFERENCE NUMERALS:

[0029] 1. Acquisition module; 2. Processing module; 3. Display module; 31. Voltage display unit; 32. Power display unit; 321. Display element; 33. Times display unit; 34. Status display unit; 4. Judgment module; 5. Reset module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following further details the present application through specific embodiments in conjunction with the drawings.

[0031] A digital voltmeter, as Figure 1 and Figure 2 shown, includes an acquisition module 1, a processing module 2, and a display module 3; the acquisition module 1 is used to acquire the voltage data and status data of the battery, and the status data includes the charging status or the non-charging status; the processing module 2 outputs the power data based on the voltage data, and the processing module 2 updates the charging times based on the status data and outputs the updated charging times; the display module 3 is used to receive the voltage data, the power data, and the charging times for display. Specifically in implementation, the voltage data is read by directly accessing the battery, and then the charging times are counted by counting whether the power increases. The charging times can be counted by counting once for each access to the power supply, or by counting once for each full charge.

[0032] As Figure 1As shown, it further includes a reset module 5. The reset module 5 is used to respond to the user's operation to output a reset signal, and the processing module 2 responds to the reset signal to recharge the charging times. Specifically, the reset module 5 is provided with a designated button. When not in the charging state, pressing it five times continuously can reset the charging times. In other embodiments, other designated reset methods can also be adopted, such as inserting a needle-like object to press a specific button.

[0033] As Figure 1 shown, it further includes a judgment module 4. The judgment module 4 is used to judge the battery type and output battery category data, and the processing module 2 outputs power data based on the battery category data and voltage data. Specifically, the battery type can be judged manually and the corresponding processing module 2 can be set. The corresponding processing module 2 can be directly selected according to the judged battery type, with a lower cost but only able to process data for the corresponding battery type. At this time, the function of the judgment module 4 is only to judge whether the battery belongs to the corresponding type of battery, or the judgment module 4 automatically judges the battery type and then transmits the judged battery type data to the processing module 2 for processing. Among them, the voltage table of lead-acid batteries is: 9V = 0%, 10V = 20%, 11V = 40%, 12V = 60%, 12.5V = 80%, 13.1V = 100%; the voltage table of lithium battery batteries is: 9V = 0%, 10V = 20%, 11V = 40%, 11.5V = 60%, 12V = 80%, 12.5V = 100%.

[0034] As Figure 1 shown, when the state received by the processing module 2 includes the charging state, the processing module 2 outputs a charging signal, and the display module 3 displays "charging" in response to the charging signal. Specifically, the display module 3 displays "charging" when it is charging and not fully charged, and does not display in other states.

[0035] As Figure 1 and Figure 2 shown, the display module 3 includes a voltage display module 3, a power display module 3, and a times display module 3. The voltage display module 3 is used to directly display the voltage data, the power display module 3 is used to display the processed power value, and the times display module 3 is used to display the processed charging times value. The display module 3 includes a plurality of display elements 321, and the display elements 321 are set corresponding to the percentage-form power values output by the voltage processing unit. Specifically, the display element 321 includes a lamp bead, and the lamp beads can form a digital shape to display the percentage of power. The voltage display element 321 and the times display module 3 also use this kind of display element 321 to display the power and charging times.

[0036] As Figure 2 shown, the whole product is ultrasonically sealed and a three-proof paint is applied to each component.

[0037] Working principle: Before leaving the factory, each component is detected through a self-check module. After leaving the factory, it is installed in the battery vehicle and directly electrically connected to the battery. When the battery is started, the voltage of the battery can be obtained and the power data can be calculated based on the voltage. At the same time, the voltage data and the power data are displayed. When the battery is charging, the charging times can be judged and the charging times can be counted. After replacing the battery, resetting can be performed to repeat the counting.

[0038] The above is the preferred embodiment of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A digital voltmeter, characterized in that: It includes an acquisition module (1), a processing module (2), and a display module (3); The acquisition module (1) is used to acquire the voltage data and status data of the battery, and the status data includes the charging status or the non-charging status; The processing module (2) outputs the power data based on the voltage data, and the processing module (2) updates the charging times based on the status data and outputs the updated charging times; The display module (3) is used to receive the voltage data, power data, and charging times for display.

2. The digital voltmeter according to claim 1, wherein: It further includes a reset module (5), the reset module (5) is used to output a reset signal in response to a user's operation, and the processing module (2) resets the charging times in response to the reset signal.

3. A digital voltmeter according to claim 1, characterized in that: It further includes a judgment module (4), the judgment module (4) is used to judge the battery type and output the battery category data, and the processing module (2) outputs the power data based on the battery category data and the voltage data.

4. A digital voltmeter according to claim 3, characterized in that: The processing module (2) outputs the power value in percentage form.

5. A digital voltmeter according to claim 4, characterized in that: The display module (3) includes a plurality of display elements (321), and the display elements (321) are set corresponding to the power value in percentage form output by the processing module (2).

6. A digital voltmeter according to claim 1, characterized in that: When the status received by the processing module (2) includes the charging status, the processing module (2) outputs a charging signal, and the display module (3) displays "charging" corresponding to the charging signal.

7. A digital voltmeter according to claim 6, characterized in that: When the processing module (2) judges that the battery is fully charged based on the voltage data, the processing module (2) outputs a full signal, and the display module (3) does not display "charging" in response to the full signal.

8. A digital voltmeter according to claim 7, characterized in that: The display module (3) includes a voltage display unit (31), a power display unit (32), a times display unit (33), and a status display unit (34). The voltage display unit (31) is used to respond to the voltage data and display it, the power display unit (32) is used to respond to the power data and display it, the times display unit (33) is used to respond to the charging times and display them, and the status display unit (34) is used to respond to the charging status and display it.

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