CN213240439U

CN213240439U - Battery testing device and handheld device

Info

Publication number: CN213240439U
Application number: CN202022176710.3U
Authority: CN
Inventors: 徐志勤; 费伟文
Original assignee: Huizhou Power Source Technology Co ltd
Current assignee: Huizhou Power Source Technology Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-05-18
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a battery testing arrangement and handheld device. This battery testing arrangement includes: a display screen; the battery detection circuit is used for detecting the battery to be detected and outputting a corresponding detection signal; the main controller is electrically connected with the display screen and the battery detection circuit respectively; the main controller is used for driving the battery detection circuit to detect the battery to be detected and outputting a detection signal detected by the battery detection circuit to the display screen; the display screen is used for displaying the battery information corresponding to the detection signal in a digital form. The utility model discloses battery testing arrangement can make the audio-visual battery testing result that reads of user.

Description

Battery testing device and handheld device

Technical Field

The utility model relates to a battery test technical field, in particular to battery testing arrangement and handheld device.

Background

At present, with the gradual increase of the application range of the column battery and the button battery in life, a user needs to detect the column battery and the button battery in time so as to determine whether the battery needs to be replaced according to the related information of the current battery.

The conventional general battery tester on the market (not only can detect a column battery, but also can detect a button battery) expresses a detection result in a mode of displaying an electric quantity grid, a user needs to count the electric quantity grid when reading the detection result, the reading is very inconvenient, and the residual electric quantity of the battery cannot be accurately judged when the electric quantity is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery testing arrangement, aim at solving the inconvenient problem of user's reading battery testing result.

In order to achieve the above object, the present invention provides a battery testing device. The battery testing device comprises:

a display screen;

the battery detection circuit is used for detecting the battery to be detected and outputting a corresponding detection signal; and

the main controller is electrically connected with the display screen and the battery detection circuit respectively; the main controller is used for driving the battery detection circuit to detect the battery to be detected and outputting a detection signal detected by the battery detection circuit to the display screen;

and the display screen is used for displaying the battery information corresponding to the detection signal in a digital form.

Optionally, the battery information includes a percentage of an electric quantity of the battery to be measured and a voltage of the battery to be measured.

Optionally, the battery information further includes an electric quantity of the battery to be tested;

the display screen is also used for correspondingly displaying the electric quantity of the battery to be detected in the form of an electric quantity grid.

Optionally, the display screen is an LCD display screen.

Optionally, the battery testing apparatus further includes:

the key circuit is electrically connected with the main controller and used for outputting key signals;

the power supply comprises a power supply battery for outputting direct-current voltage; the power supply is electrically connected with the display screen, the key circuit, the battery detection circuit and the main controller respectively; the power supply is used for respectively supplying power to the display screen, the key circuit and the battery detection circuit under the control of the main controller;

the main controller is also used for detecting the electric quantity of the power supply battery and switching and displaying the electric quantity of the power supply battery and the electric quantity of the battery to be detected according to the key signal output by the key circuit.

Optionally, the power supply further comprises:

the power supply management circuit is electrically connected with the power supply battery, the display screen, the key circuit, the battery detection circuit and the main controller respectively; the power management circuit is used for respectively outputting the direct-current voltage output by the power supply battery to the display screen, the key circuit and the battery detection circuit after corresponding voltage conversion under the control of the main controller so as to respectively supply power to the display screen, the key circuit and the battery detection circuit.

Optionally, the main controller is further configured to detect an electric quantity of the power supply battery, and switch and display the electric quantity of the power supply battery and the electric quantity of the battery to be tested according to a key signal output by the key circuit.

Optionally, the battery detection circuit includes a first capacitor and a first resistor; the first end of the first capacitor is connected with the anode of the battery to be detected through the first resistor, and the common end of the first capacitor and the first resistor is connected with the main controller; and the second end of the first capacitor is connected with the negative electrode of the battery to be detected and grounded.

Optionally, the battery detection circuit further comprises:

the anti-reverse connection circuit comprises a second resistor, a third resistor and a first switch device; one end of the second resistor is connected with the anode of the battery to be detected, and the other end of the second resistor is connected with the second end of the first capacitor through the third resistor; the controlled end of the first switch device is connected with the common end of the second resistor and the third resistor, the input end of the first switch device is connected with the negative electrode of the battery to be detected, and the output end of the first switch device is connected with the second end of the first capacitor.

The utility model also provides a handheld device, handheld device includes:

the button battery test slot comprises a contact point for contacting the negative electrode of the button battery to be tested;

the column type battery test slot comprises a contact point for contacting the positive pole of the column type battery to be tested;

the negative electrode meter pen line is used for contacting the negative electrode of the column type battery to be tested; and

according to the battery testing device, the battery testing device is electrically connected with the button battery testing groove, the column battery testing groove and the negative meter pen line respectively.

The utility model is provided with a display screen, a battery detection circuit and a main controller; the main controller drives the battery detection circuit to detect the detected battery, and the main controller can also analyze a detection signal output by the battery detection circuit to obtain corresponding battery information and output the battery information to the display screen, so that the display screen can correspondingly display the battery information in a digital form. The utility model discloses battery testing arrangement is through detecting the multinomial battery information of being surveyed the battery to battery information that will record is through reasonable layout design back, with the audio-visual presentation of digital form on the display screen, so that the user can audio-visually read the test result, thereby has solved the inconvenient problem of user's reading battery test result, and is favorable to the user to accurately acquire battery residual capacity when low-power.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic diagram of functional modules of an embodiment of the battery testing apparatus of the present invention;

fig. 2 is a schematic diagram of a functional module of another embodiment of the battery testing apparatus of the present invention;

FIG. 3 is a schematic diagram illustrating a display effect of the display screen of FIG. 1 according to an embodiment;

fig. 4 is a schematic circuit diagram of an embodiment of the battery detection circuit in fig. 1.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a battery testing arrangement.

Referring to fig. 1 to 4, in an embodiment of the present invention, the battery testing apparatus includes:

a display screen 10;

the battery detection circuit 20 is used for detecting the battery to be detected and outputting a corresponding detection signal; and

a main controller 30 electrically connected to the display screen 10 and the battery detection circuit 20, respectively; the main controller 30 is configured to drive the battery detection circuit 20 to detect a battery to be detected, and output a detection signal detected by the battery detection circuit 20 to the display screen 10;

the display screen 10 is configured to display battery information corresponding to the detection signal in a digital form.

In this embodiment, the display screen 10 may be an LCD display screen or an LED display screen. The display screen 10 may be used to correspondingly display various test information, such as range information, selected by a user of the battery test apparatus before testing, and various battery information obtained after testing.

The battery detection circuit 20 may be implemented by a discharge circuit, and the battery detection circuit 20 is configured to discharge the current of the battery under test when the battery under test is connected, and output the discharge current or the discharge voltage as a detection signal.

The main controller 30 may be a single chip, a DSP, an FPGA, or other microprocessor. Those skilled in the art can integrate some hardware circuits and software programs or algorithms in the main controller 30, store related data, and utilize various interfaces and lines to connect with the display screen 10, the key circuit 40 and the battery detection circuit 20 in the battery test device, so that when receiving the electrical signals output by the key circuit 40, the battery test device can execute various functions of the battery test device and perform overall monitoring thereof by operating or executing the software programs and/or modules in the main controller 30 and calling up the data in the main controller 30. When the battery to be detected is accessed, the main controller 30 may control the battery detection circuit 20 to be powered on or output a corresponding enable signal, so that the battery detection circuit 20 detects the battery to be detected and outputs a corresponding detection signal; the main controller 30 may further integrate a sampling circuit, an ADC conversion circuit, a filter circuit, and other hardware circuits, and is connected to the battery detection circuit 20 through a relevant interface and line, so that the sampling circuit may sample the detection signal and output a sampling signal to the ADC conversion circuit, and the ADC conversion circuit may convert the sampling signal in the form of an analog signal into a digital signal, so that a relevant software program or algorithm may analyze and process the sampling signal of the digital signal to obtain multiple items of battery information in the sampling signal, and send the multiple items of battery information to the display screen 10 directly or after corresponding calculation, so that different battery information may be displayed in corresponding areas on the display screen 10 in a digital form. For example, the main controller 30 may obtain the total battery power and the current battery power of the battery to be tested through analysis, and directly send the total battery power and the current battery power to the display screen 10 for corresponding display; the main controller 30 can also obtain the total battery power and the current battery power of the battery to be tested, divide the current battery power by the total battery power through a pre-stored correlation calculation algorithm to obtain the percentage of the current battery power of the battery to be tested, and send the calculation result to the display screen 10 so as to only display the percentage of the current battery power of the battery to be tested. It can be understood that in the actual design, the battery information concerned by the user can be obtained through market research and user feedback, and the battery information is reasonably arranged in the design process, so that the battery information can be intuitively read by the user.

The display screen 10 may include a plurality of thin film transistors or LED lamps for displaying, and the main controller 30 may control the corresponding thin film transistors or LED lamps in the display screen 10 to turn on/off, so that the turned on thin film transistors or LED lamps may exhibit a digital display effect, thereby displaying battery information corresponding to the detection signals in a digital form.

The utility model is provided with a display screen 10, a battery detection circuit 20 and a main controller 30; the main controller 30 drives the battery detection circuit 20 to detect the battery to be detected, and the main controller 30 can also analyze the detection signal output by the battery detection circuit 20 to obtain the corresponding battery information and output the battery information to the display screen 10, so that the display screen 10 can display the battery information in a digital form. The utility model discloses battery testing arrangement is through detecting the multinomial battery information of being surveyed the battery to battery information that will record is through reasonable layout design back, with the audio-visual presentation of digital form on display screen 10, so that the user can audio-visually read the test result, thereby has solved the inconvenient problem of user's reading battery test result, and is favorable to the user to accurately acquire battery residual capacity when low-power.

Referring to fig. 1 to 4, in an embodiment of the present invention, the battery information includes percentage of electric quantity of the battery to be measured and voltage of the battery to be measured.

Further, the battery information also comprises the electric quantity of the battery to be detected;

the display screen 10 is also used for correspondingly displaying the electric quantity of the battery to be tested in the form of an electric quantity grid.

In this embodiment, the main controller 30 is configured to perform corresponding analysis processing on the detection signal output by the battery detection circuit 20 to obtain the total battery power, the current battery power, and the voltage of the battery to be detected, and to display the calculated total battery power and the calculated current battery power on the display screen 10 in the form of the percentage of the current battery power; and the voltage of the battery to be measured is directly presented in a digital form independently, so that a user can intuitively know whether the residual capacity of the battery to be measured and the discharge voltage of the battery to be measured are changed or not. And the utility model discloses battery testing arrangement has also kept the display mode of electric quantity check among the original battery testing arrangement for show the current electric quantity of being surveyed the battery, obtain the demand of being surveyed battery information with the fully provided user. Of course, it will be appreciated that in alternative embodiments, the battery power may be displayed in the form of a number.

Referring to fig. 1 to 4, in an embodiment of the present invention, the display screen 10 is an LCD display screen 10.

In this embodiment, the LCD display screen 10 may be implemented by using a plurality of thin film transistors, and the size, shape and position of the LCD display screen 10 are determined according to actual needs, which is not limited herein. The main controller 30 can control the corresponding thin film transistors to be turned on so that the display screen 10 displays different numbers and different power grids. In practical application, the battery information most concerned by the user, such as the current electric quantity percentage, can be displayed in a larger display scale, so that the user can conveniently obtain the battery information most concerned.

Referring to fig. 1 to 4, in an embodiment of the present invention, the battery testing apparatus further includes:

a key circuit 40 electrically connected to the main controller 30 for outputting a key signal;

a power supply 50 including a power supply battery 51 for outputting a direct-current voltage; the power supply 50 is electrically connected to the display screen 10, the key circuit 40, the battery detection circuit 20 and the main controller 30; the power supply 50 is used for respectively supplying power to the display screen 10, the key circuit 40 and the battery detection circuit 20 under the control of the main controller 30.

The main controller 30 is further configured to detect an electric quantity of the power supply battery 51, and switch and display the electric quantity of the power supply battery 51 and the electric quantity of the battery to be tested according to the key signal output by the key circuit 40.

Optionally, the power supply 50 further includes:

a power management circuit 52 electrically connected to the power supply battery 51, the display screen 10, the key circuit 40, the battery detection circuit 20, and the main controller 30, respectively; the power management circuit 52 is configured to, under the control of the main controller 30, convert the dc voltage output by the power supply battery 51 into corresponding voltages and output the converted voltages to the display screen 10, the key circuit 40, and the battery detection circuit 20, so as to supply power to the display screen 10, the key circuit 40, and the battery detection circuit 20, respectively.

In this embodiment, the key circuit 40 may include a plurality of keys disposed on the housing of the battery test apparatus, and each key may be disposed corresponding to a corresponding function, for example: the battery test device comprises a power-on/power-off key, a start/end detection key, a range selection key, a switching display key and the like, so that when the key action is received, corresponding key signals can be output to other functional modules in the battery test device, and corresponding functions can be realized. It is understood that the key arrangement is determined according to actual needs, and is not limited herein.

In the present embodiment, the power supply 50 includes a power supply battery 51 and a power management circuit 52; in other alternative embodiments, the power supply 50 may be only the power management circuit 52, and the power management circuit 52 may be connected to an external power source through an external power adapter to supply power to the battery testing apparatus. It will be appreciated that the housing may be configured with a battery well for receiving the power supply battery 51 and a removable back cover, with associated circuitry for connecting the power supply battery 51 to the power management circuit 52.

The power management circuit 52 may be implemented by a power management integrated chip or a multi-channel DC-DC, wherein a controlled terminal of the power management circuit 52 is connected to the main control chip, an input terminal thereof is connected to the power supply battery 51, and a plurality of output terminals thereof are respectively connected to corresponding functional circuits. The power management circuit 52 is used for supplying power to other functional circuits according to various control signals output by the main controller 30; for example, when the battery testing apparatus is just powered on, the power management circuit 52 may first supply power to the main controller 30, and when the main controller 30 functions normally, the power management circuit 52 may output a corresponding power-on control signal to the power management circuit 52, so that the power management circuit 52 supplies power to the display screen 10 and the key circuit 40; when the key circuit 40 returns a key signal for starting the test to the main controller 30, the main controller 30 may output a corresponding power supply control signal to enable the power management circuit 52 to supply power to the battery detection circuit 20 so that it can start the detection. So configured, the main controller 30 can drive the corresponding functional circuit to operate by controlling the power supply of the functional circuit.

The main controller 30 may further integrate a current sampling circuit and a timing circuit, and connect a sampling terminal of the current sampling circuit with an output terminal of the power supply battery 51 through a related port, so as to sample the power supply current of the power supply battery 51, so as to obtain a current sampling signal and a corresponding discharging time, and through a pre-stored software program, algorithm and a total electric quantity parameter of the power supply battery 51, the related battery information of the power supply battery 51 may be obtained by calculation, for example: the percentage of the current capacity of the power supply battery 51 and the battery voltage; and switches and displays the battery information related to the corresponding power supply battery 51 on the display screen 10 when the main controller 30 receives the corresponding key signal. In an alternative embodiment, after the user presses a specific key for a long time to reach the preset threshold time, the display area displaying the power of the battery to be tested in the form of the power grid is switched to display the power percentage of the power supply battery 51. Of course, the switching display of the battery information of the power supply battery 51 can also be realized by adopting a single key; the display area for switching display is determined according to actual needs, and is not limited herein. By setting the display switching function, the user can know the electric quantity of the power supply battery 51 of the battery test device at any time and change the power supply battery 51 at any time.

Referring to fig. 1 to 4, in an embodiment of the present invention, the battery detection circuit 20 includes a first capacitor C1 and a first resistor R1; a first end of the first capacitor C1 is connected with the anode of the battery to be tested through the first resistor R1, and a common end of the first capacitor C1 and the first resistor R1 is connected with the main controller 30; and the second end of the first capacitor C1 is connected with the negative electrode of the tested resistor and grounded.

Further, the battery detection circuit 20 further includes:

the anti-reverse connection circuit comprises a second resistor R2, a third resistor R3 and a first switching device Q1; one end of the second resistor R2 is connected with the anode of the battery to be tested, and the other end of the second resistor R2 is connected with the second end of the first capacitor C1 through the third resistor R3; the controlled end of the first switching device Q1 is connected with the common end of the second resistor R2 and the third resistor R3, the input end of the first switching device Q1 is connected with the negative electrode of the battery to be tested, and the output end of the first switching device Q1 is connected with the second end of the first capacitor C1.

In practical tests, the conventional universal battery tester has a button battery test slot and a column battery test slot, but the contact point of the button battery test slot is used for contacting the negative pole of the button battery (the positive pole of the button battery is on the side edge), and the contact point of the column battery is used for contacting the positive pole of the column battery (after the slot is inserted, the negative pole pen line is also needed to touch the negative pole of the column battery). Since the contact points are very similar in appearance, the negative electrode of the column battery is easily inserted into the test slot of the button battery, so that the negative electrode of the column battery is in contact with the contact point of the test slot of the button battery, and the negative electrode pen wire touches the positive electrode of the column battery. At the moment, the column type battery is in a short-circuit discharge state, and the battery tester is irreversibly damaged by excessive discharge current.

In this embodiment, the common terminal of the first capacitor C1 and the first resistor R1 may be connected to the AD sampling port of the main controller 30, so as to sample the discharge current or the discharge voltage of the battery under test. In an alternative embodiment, the discharge voltage of the battery to be tested sampled by the AD sampling port is 1.44V. The first resistor R1 is a current limiting resistor to limit the magnitude of the discharge current. The switch device can be realized by N-MOS tube, NPN type triode or high-level conducting switch device of silicon controlled rectifier, etc. The second resistor R2 and the third resistor R3 form a voltage dividing circuit for detecting the voltage of the positive electrode of the battery to be detected.

When the column type battery or the button type battery is normally connected into the corresponding test slot, the voltage of the controlled end of the switching device is pulled up to the positive voltage of the tested battery by the second resistor R2, the switching device is conducted, the reverse connection prevention circuit does not work, the positive electrode of the tested battery outputs small current for testing, and the negative electrode of the tested battery can be normally grounded to form a test loop; when the wrong use occurs, the voltage of the controlled end of the switch device is pulled down to the grounding voltage by the third resistor R3, the switch device is closed, and the negative electrode of the tested battery cannot be normally grounded to form a test loop, so that irreversible damage to the battery tester caused by the overlarge discharge current of the column battery when the wrong use occurs is avoided. And the battery to be tested is subjected to low-current discharge for detection, so that the virtual high voltage of the battery to be tested can be avoided, and the accuracy of a battery test result can be ensured.

The utility model also provides a handheld device, handheld device includes:

In the embodiment, the bottom plate of the button cell test slot is provided with a contact point for contacting the cathode of the button cell; the walls of the groove can be made of conductive material and used for contacting with the positive electrode on the side of the button cell. The button cell test slot, the column cell test slot and the negative meter pen line can be connected with a cell detection circuit 20 of a test circuit in the test device so as to test the accessed column cell and the button cell.

The detailed structure of the battery testing device can refer to the above embodiments, and is not described herein; it can be understood that, because the above-mentioned battery testing apparatus is used in the handheld device, the embodiment of the handheld device includes all technical solutions of all embodiments of the above-mentioned battery testing apparatus, and the achieved technical effects are also completely the same, and are not described herein again.

The above is only the optional embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all of which are in the concept of the present invention, the equivalent structure transformation of the content of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. A battery testing apparatus, characterized in that the battery testing apparatus comprises:

a display screen;

2. The battery testing apparatus of claim 1, wherein the battery information comprises a percentage of a charge of the battery under test and a voltage of the battery under test.

3. The battery test apparatus of claim 2, wherein the battery information further includes a charge level of the battery under test;

4. The battery testing apparatus of claim 3, wherein the display screen is an LCD display screen.

5. The battery test apparatus of any one of claims 1-4, further comprising:

6. The battery test apparatus of claim 5, wherein the power supply further comprises:

7. The battery test apparatus of claim 1, wherein the battery detection circuit comprises a first capacitor and a first resistor; the first end of the first capacitor is connected with the anode of the battery to be detected through the first resistor, and the common end of the first capacitor and the first resistor is connected with the main controller; and the second end of the first capacitor is connected with the negative electrode of the battery to be detected and grounded.

8. The battery test apparatus of claim 7, wherein the battery detection circuit further comprises:

9. A handheld device, characterized in that the handheld device comprises:

the battery testing device of any one of claims 1-8, in electrical communication with the button battery test slot, the post battery test slot, and the negative gauge cable, respectively.