CN217085213U - Button cell discharge capacity detects box - Google Patents

Abstract

The utility model discloses a button cell discharge capacity detects box, include: the battery connecting module is used for being connected with a tested battery; the voltage detection module is used for detecting the voltage of the battery to be detected; the discharging circuit comprises a plurality of resistors connected in parallel and a switch connected with each resistor in series, and the plurality of resistors connected in parallel are connected with the battery connecting module; the processing unit is connected with the battery connection module, the voltage detection module and the switch of the discharge circuit; and the box body is used for accommodating the battery connection module, the voltage detection module, the discharge circuit and the processing unit. The button cell discharge capacity detection box adopting the technical scheme has the advantages of compact structure, small volume and simple operation.

Description

Button cell discharge capacity detects box

Technical Field

The utility model relates to a battery technology field especially relates to a button cell discharge capacity detects box.

Background

The battery capacity is one of important performance indexes for measuring the performance of the battery, and the electric quantity discharged by the battery under certain conditions is the capacity of the battery, and the battery capacity is usually in units of ampere hour, which is called as A.H for short. The conventional universal meter is generally used for measuring the battery capacity of the button battery, so that the time is long, and the measurement data is not accurate enough.

SUMMERY OF THE UTILITY MODEL

It is necessary to provide a discharge capacity detecting box for button cell, which solves the problems of the background art.

In order to achieve the above object, the present application provides a button cell discharge capacity detecting box, comprising:

the battery connecting module is used for being connected with a tested battery;

the voltage detection module is used for detecting the voltage of the battery to be detected;

the discharging circuit comprises a plurality of resistors connected in parallel and a switch connected with each resistor in series, and the plurality of resistors connected in parallel are connected with the battery connecting module;

the processing unit is connected with the battery connection module, the voltage detection module and the switch of the discharge circuit;

a case housing the battery connection module, the voltage detection module, the discharge circuit, and the processing unit.

Further, the protective plate is further included; the protection board is movably arranged on the box body and used for covering the tested battery.

Further, the device also comprises a display module; the display module is connected with the processing unit and used for displaying discharge parameters of the battery to be detected, wherein the discharge parameters comprise discharge current, discharge voltage, discharge time, initial voltage or battery capacity.

Further, the battery connection module comprises a positive connection plate and a negative connection plate; the positive connecting plate is provided with a positive conductive part, the negative connecting plate is provided with a negative conductive part, the positive conductive part is opposite to the negative conductive part, and the positive conductive part and the negative conductive part are used for being connected with a tested battery.

Further, the battery connection module further comprises a spring thimble; the spring ejector pin is arranged on the positive electrode conductive part or the negative electrode conductive part.

Furthermore, the number of the spring thimbles is multiple, the positive connecting plate is provided with a plurality of positive conductive parts, the negative connecting plate is provided with a plurality of negative conductive parts, each positive conductive part or each negative conductive part is provided with one spring thimble, each positive conductive part is connected with the processing unit through a discharge circuit, and each negative conductive part is grounded.

Further, the device also comprises a key module, wherein the key module is connected with the processing unit; the key module comprises a parameter switching key, and the parameter switching key is used for sending an instruction for checking the discharge parameters to the processing unit; and/or:

the key module comprises a state switching key, and the state switching key is used for sending a command of starting or stopping battery discharge to the processing unit; and/or:

the key module comprises a resistance switching key, and the resistance switching key is used for sending an instruction for closing or opening the switch to the processing unit.

Further, the power supply circuit is also included; the power circuit is connected with the processing unit and is used for supplying power to the button battery discharge capacity detection box.

Further, the power supply circuit includes a battery circuit, and the battery circuit is connected to the processing unit.

Further, the voltage detection module is an analog-to-digital converter.

Be different from prior art, among the above-mentioned technical scheme, the two poles of the earth of being surveyed the battery contacts with voltage detection module, makes being surveyed the battery and forms the electricity with button cell discharge capacity detection box and is connected, adjusts the resistance in the discharge circuit through the switch of closure and resistance connection, can detect the voltage and the electric current of battery in a flexible way, and then obtains comparatively accurate battery capacity. In addition, the button cell discharge capacity detection box has compact structure, small volume and simple operation.

Drawings

FIG. 1 is a schematic structural view of a button cell discharge capacity detecting case according to the present application;

fig. 2 is a schematic structural view of a battery connection module according to the present application;

fig. 3 is a schematic structural view of a battery connection module according to the present application;

FIG. 4 is a schematic diagram of a discharge circuit according to the present application;

FIG. 5 is a second schematic diagram of a discharge circuit according to the present application;

fig. 6 is a schematic structural diagram of a communication interface in the present application.

Description of reference numerals:

1. a box body;

2. a battery connection module;

21. a positive electrode connecting plate; 22. a negative electrode connecting plate; 23. a spring thimble;

3. a protection plate;

4. a display module;

5. a key module;

51. a parameter switching key; 52. a state switching key; 53. a resistance switching key;

6. a communication interface;

7. a processing unit;

8. a voltage detection module;

9. a battery to be tested;

10. a data storage module;

11. a temperature monitoring circuit;

13. a communication circuit;

14. a real-time clock circuit;

15. a power supply circuit;

16. a discharge circuit.

Detailed Description

To explain in detail the possible application scenarios, technical principles, and practical embodiments of the present application, and to achieve the objectives and effects thereof, the following detailed description is given with reference to the accompanying drawings. The embodiments described herein are merely for more clearly illustrating the technical solutions of the present application, and therefore, the embodiments are only used as examples, and the scope of the present application is not limited thereby.

Referring to fig. 1 to 6, the present application provides a discharge capacity detecting box for button cell, which can detect the electrical parameter of the battery 9. The button cell discharge capacity detects the box and includes:

the battery connecting module 2 is used for being connected with a tested battery 9;

the voltage detection module 8 is used for detecting the voltage of the battery 9 to be detected;

a discharge circuit 16 including a plurality of resistors connected in parallel and a switch connected in series to each resistor, the plurality of resistors connected in parallel being connected to the battery connection module 2; if the three resistors (R1, R2 and R3 respectively) are connected in parallel, the switch S1 connected with the resistor R1 is closed, and the resistor R1 is in a load state in the circuit; a switch S2 connected with the resistor R2 is closed, and the resistor R2 is in a load state in the circuit; a switch S3 connected with the resistor R3 is closed, and the resistor R3 is in a load state in the circuit;

a processing unit 7 that connects the battery connection module 2, the voltage detection module 8, and the switch of the discharge circuit 16;

the box body 1 accommodates the battery connection module 2, the voltage detection module 8, the discharge circuit 16 and the processing unit 7.

Among the above-mentioned technical scheme, the two poles of the earth of the battery under test and the contact of voltage detection module make the battery under test and button cell discharge capacity detect the box and form the electricity and be connected, adjust the resistance in the discharge circuit through the switch of closure and resistance connection, can detect the voltage and the electric current of battery in a flexible way, and then obtain comparatively accurate battery capacity. In addition, the button cell discharge capacity detection box has compact structure, small volume and simple operation.

Referring to fig. 4, as an embodiment of the present application, the resistances of the resistors connected in parallel are different, and different batteries 9 to be tested can be flexibly tested through the resistors with different resistances. Taking three parallel resistors as an example, the resistances of the three parallel resistors are 1000 ohm, 10000 ohm and 15000 ohm respectively, and three switching modes are provided, so that the three parallel resistors can adapt to the discharge characteristics of different batteries. Wherein the smaller the resistance value, the shorter the discharge time, and the larger the resistance value, the longer the discharge time. In some embodiments, the resistances of the resistors may be the same, and a plurality of resistors may be turned on simultaneously to change the resistances in the circuit.

The current flowing through the load can be calculated by ohm's law:

i = U/R ohm's law

In ohm's law, I is current (in amperes), U is voltage (in volts), and R is resistance (in ohms).

Wherein the battery voltage can be measured by the voltage detection module 8 and the resistance is known. When S1, S2, S3 are all off, the voltage of the battery can be measured without any load.

Referring to fig. 4, taking the example of parallel connection of three resistors, when the switch S1 is closed, the voltage after the load of the resistor R1 is measured, and the current flowing through R1 is calculated by using ohm' S law; when the switch S2 is closed, the voltage loaded by the resistor R2 can be measured, and the current flowing through the resistor R2 is calculated by using ohm' S law; when the switch S3 is closed, the voltage after the load of the resistor R3 is connected can be measured, and the current flowing through the resistor R3 is calculated by using ohm' S law; after the discharge is started, the processing unit 7 monitors the voltage of the discharged battery in real time, accumulates the calculated current, and writes data into the memory. When the voltage of the battery 9 to be tested is lower than a set value, the current station finishes discharging, and the accumulated current value is converted to obtain the battery capacity. Note that battery capacity (in ma-hr) = discharge current = discharge time.

Referring to fig. 4, as an embodiment of the present application, the processing unit 7 is an electronic component with a data processing function, including but not limited to: a Micro Control Unit (MCU), a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), and a Digital Signal Processor (DSP).

Referring to fig. 4 and 5, as an embodiment of the present application, the resistances of the resistors connected in parallel are different, and different batteries 9 to be tested can be flexibly tested through the resistors with different resistances. Taking three parallel resistors as an example, the resistances of the three parallel resistors are 1000 ohm, 10000 ohm and 15000 ohm respectively, and three switching modes are provided, so that the three parallel resistors can adapt to the discharge characteristics of different batteries. Wherein the smaller the resistance value, the shorter the discharge time, and the larger the resistance value, the longer the discharge time. In some embodiments, the resistances of the resistors may be the same, and a plurality of resistors may be turned on simultaneously to change the resistances in the circuit. As an embodiment of the present application, a switch is a component for opening a circuit, interrupting a current, or flowing a current to another circuit, and a MOS transistor (also referred to as a mosfet), a triode, a thyristor, or the like can be used. Taking NMOS transistors (Q1, Q2, Q3, respectively) and three parallel resistors (R1, R2, R3, respectively) as an example, the structure is shown in fig. 5: the grid electrode of the NMOS tube Q1 is connected with the processing unit 7, the drain electrode of the NMOS tube Q1 is connected with the resistor Q1, the source electrode of the NMOS tube Q1 is grounded, and the resistor R1 can be opened when the NMOS tube Q1 is conducted; the grid electrode of the NMOS tube Q2 is connected with the processing unit 7, the drain electrode of the NMOS tube Q2 is connected with the resistor Q2, the source electrode of the NMOS tube Q2 is grounded, and the resistor R2 can be opened when the NMOS tube Q2 is conducted; the grid electrode of the NMOS tube Q3 is connected with the processing unit 7, the drain electrode of the NMOS tube Q3 is connected with the resistor Q3, the source electrode of the NMOS tube Q3 is grounded, and the resistor R3 can be opened when the NMOS tube Q3 is conducted.

As an embodiment of the present application, the battery connection module 2 includes a positive connection plate 21 and a negative connection plate 22, and the positive connection plate 21 and the negative connection plate 22 are preferably parallel. The negative connection plate 22 may be located below the positive connection plate 21, as shown in fig. 1, 2 and 3, and in some embodiments, the negative connection plate 22 may be located above the positive connection plate 21. The positive connecting plate 21 is provided with a positive conductive part, the negative connecting plate 22 is provided with a negative conductive part, the positive conductive part is opposite to the negative conductive part, the positive conductive part and the negative conductive part are used for being connected with the tested battery 9, and two poles (positive and negative) of the tested battery 9 and the positive conductive part are connected with the positive conductive part, so that the tested battery 9 is connected to the button battery discharge capacity detection box. It should be noted that the positive electrode of the battery 9 to be measured is in contact with the positive electrode conductive part, and the negative electrode of the battery 9 to be measured is in contact with the negative electrode conductive part. The positive conductive part is connected to the voltage detection module 8, the positive conductive part is connected to the processing unit 7, and the negative conductive part is grounded.

The positive electrode conducting part can be made of a metal or nonmetal conductor material, and the negative electrode conducting part can be made of a metal or nonmetal conductor material and has better current conducting capacity. The tested battery 9 can be a button battery, a No. 7 battery, a No. 1 battery and the like. Preferably, the button cell discharge capacity detection case can be applied to a button cell for electronic watch (operating voltage of 1.5 volts, mercury-free zinc-manganese battery) or a button cell for electronic watch (operating voltage of 3.0 volts, lithium-manganese battery).

The tested battery 9 is arranged between the positive connecting plate 21 and the negative connecting plate 22, and if the two poles of the tested battery 9 are not tightly connected with the positive conductive part or the negative conductive part, an open circuit occurs. In order to solve this problem, as an embodiment of the present application, the battery connection module 2 further includes a pogo pin 23, which is shown in fig. 1, 2 and 3. The pogo pin 23 is disposed on the positive electrode conductive portion or the negative electrode conductive portion. If the spring thimble 23 is arranged on the positive electrode conductive part, the spring thimble 23 and the tested battery 9 form electric connection when the spring thimble 23 is put down; if the pogo pin 23 is disposed on the negative conductive portion, the pogo pin 23 and the battery 9 to be tested can be electrically connected when the pogo pin 23 is put down. Therefore, good contact between the two poles of the battery and the battery connecting module 2 can be ensured, and the stability of the button battery discharge capacity detection box is improved.

Referring to fig. 1 to 3, as an embodiment of the present application, the button cell discharge capacity detecting box can detect a plurality of cells simultaneously, the positive connecting plate 21 has a plurality of positive conductive parts spaced apart from each other, the negative connecting plate 22 has a plurality of negative conductive parts spaced apart from each other, and the plurality of positive conductive parts are spaced apart from each other. If the number of the positive electrode conducting parts and the number of the negative electrode conducting parts are respectively 12, the discharge capacity detection box of the button cell can simultaneously detect 12 cells; if the number of the positive electrode conductive parts and the number of the negative electrode conductive parts are respectively 8, the discharge capacity detection box of the button cell can simultaneously detect 8 cells; if the number of the positive electrode conductive parts and the number of the negative electrode conductive parts are respectively 5, the discharge capacity detection box of the button cell can simultaneously detect 5 cells. The non-positive conductive part of the positive connection plate 21 and the non-negative conductive part of the negative connection plate 22 are non-conductive, so that each battery 9 under test is connected to the processing unit 7 via a discharge circuit 16, and each negative conductive part is grounded. Preferably, there are a plurality of pogo pins 23, and one pogo pin 23 is disposed on each of the positive conductive portion and the negative conductive portion.

Referring to fig. 1 to 3, if the battery 9 to be tested is over-discharged, the battery will bulge, and in severe cases, the battery will explode. In order to solve this problem, as an embodiment of the present application, the button cell discharge capacity detecting case further includes a protection plate 3. The protection plate 3 is movably arranged on the box body 1, and the protection plate 3 is used for covering the tested battery 9 and preventing the tested battery 9 from exploding to hurt people. The box body 1 serves as a part for accommodating the battery connection module 2, the voltage detection module 8 and the discharge circuit 16, and the battery connection module 2 is arranged on the outer wall of the box body 1, so that the battery connection module 2 is optimally arranged in a groove on the outer wall of the box body 1. The protection plate 3 may be hinged to the outer wall of the case body 1, and the protection plate 3 rotates around the hinged portion as shown in fig. 1 and covers the battery connection module 2 and the battery under test 9 in the groove of the outer wall of the case body 1 as shown in fig. 3. In some embodiments, the protective cover may be inserted, and a slot is provided on the outer wall of the case 1, and the protective cover is inserted into the slot and covers the battery connection module 2 and the battery 9 inside. Preferably, the protection plate 3 is transparent, so that a user can see the condition of the battery 9 to be detected on the inner side clearly.

Referring to fig. 1, fig. 3 and fig. 4, as an embodiment of the present application, the button cell discharge capacity detecting box further includes a display module 4. Display module 4 with processing unit is connected, and display module 4 can include OLED display screen, LCD liquid crystal display, emitting diode display screen, quantum dot display screen or electron ink display screen for show by survey battery 9's discharge parameter, discharge parameter includes discharge current, discharge voltage, discharge time, initial voltage or battery capacity, and display module 4 can directly perceived display real-time supervision data, promotes the efficiency that detects.

Referring to fig. 1, fig. 3 and fig. 4, as an embodiment of the present application, the button cell discharge capacity detecting box further includes a key module 5. The key module 5 is connected with the processing unit 7, and the key module 5 is arranged on the outer wall of the box body 1, so that the use by a user is facilitated. Specifically, the key module 5 includes the following keys: the key module 5 includes a parameter switching key 51, where the parameter switching key 51 is configured to send an instruction to the processing unit 7 to check the discharge parameter, and then the processing unit 7 displays the discharge parameter through the display module 4; and/or: the key module 5 comprises a state switching key 52, the state switching key 52 is used for sending an instruction of starting or stopping discharging of the battery 9 to be tested to the processing unit 7, and then the processing unit 7 performs or stops discharging on the battery 9 to be tested; and/or: the key module 5 includes a resistance switching key 53, where the resistance switching key 53 is used to send an instruction to the processing unit 7 to close or open the switch, and then the processing unit 7 closes or opens the switch.

Referring to fig. 4, as an embodiment of the present application, the button cell discharge capacity detecting case further includes a power circuit 15. The power circuit 15 is connected with the processing unit 7, and the power circuit 15 is used for supplying power to the button battery discharge capacity detection box. The power circuit 15 includes a storage battery circuit, the storage battery circuit is connected with the processing unit 7, and a storage battery in the storage battery circuit may be a lead-acid battery or a lithium battery. In some embodiments, the button cell discharge capacity detection box can be provided with a plug for connecting with a mains supply, and the button cell discharge capacity detection box is powered by the mains supply. The mains supply all over the world has different voltage standards, for example, 220V (volt) is common in China. The battery circuit can be used without mains supply.

Referring to fig. 4 and fig. 6, as an embodiment of the present application, the button battery discharge capacity detecting box includes a communication interface 6, the communication interface 6 is connected to the processing unit 7, and the communication interface 6 may be a USB interface, an RS232 interface, a Lighting interface, or the like. After the discharge of the battery 9 is finished, the user can transmit the data in the memory to an upper computer (such as a computer) through the communication interface 6, and detailed discharge data is generated on the upper computer.

Referring to fig. 4 and 5, as an embodiment of the present invention, the voltage detecting module 8 is an analog to digital converter (ADC), the ADC can convert an analog signal into a digital signal to measure the voltage of the battery 9, and the positive conductive part and the processing unit 7 are respectively connected to the ADC. Preferably, the analog-to-digital converter is integrated on the processing unit 7, the processing unit 7 can be an STC8H8K64 single chip microcomputer, and the analog-to-digital converter integrated on the STC8H8K64 single chip microcomputer can accurately monitor the voltage and current data of the battery 9 to be tested and the battery capacity in real time. In certain embodiments, the voltage detection module 8 is a voltmeter.

Referring to fig. 4 and 5, as an embodiment of the present application, in order to detect the temperature of the circuit of the button battery discharge capacity detecting box, the button battery discharge capacity detecting box further includes a temperature monitoring circuit 11, and the temperature monitoring circuit 11 is connected to the processing unit 7. The temperature monitoring circuit 11 is used for detecting the temperature of the circuit, and if the temperature of the circuit detected by the temperature monitoring circuit 11 is higher than a preset value (such as 60 ℃, 70 ℃ and the like), the pre-tightening information is sent to the processing unit 7, and the processing unit 7 can start a cooling fan to reduce the temperature or stop discharging detection, so that damage caused by overhigh temperature of the circuit and property loss are avoided.

Referring to fig. 4 and 5, as an embodiment of the present application, the button cell discharge capacity detecting box further includes a data storage module 10, and the data storage module 10 is connected to the processing unit 7. The data storage module 10 can record working parameters and discharge parameters generated in the operation process of the button battery discharge capacity detection box, and after the button battery discharge capacity detection box is connected with the upper computer, the upper computer can copy the working parameters and the discharge parameters so as to perform more detailed analysis in the following process.

Referring to fig. 4 and 5, as an embodiment of the present application, the button cell discharge capacity detecting box further includes a communication circuit 13, and the communication circuit 13 is connected to the processing unit 7. The communication circuit 13 may be a Universal Asynchronous Receiver/Transmitter (UART), which converts data to be transmitted between serial communication and parallel communication, so that the upper computer is in communication connection with the button cell discharge capacity detection box.

Referring to fig. 4 and 5, as an embodiment of the present application, the button cell discharge capacity detecting box further includes a real-time clock circuit 14, and the real-time clock circuit 14 is connected to the processing unit 7. Real-time clock circuit 14 may provide processing unit 7 with the determined time so that processing unit 7 records a variety of time data.

The operation mode of the button cell discharge capacity detection box is as follows:

the main page of the discharge state is selected through the parameter switching key 51, the spring thimble 23 is pulled up (connected with the positive electrode conductive part), the negative electrode of the tested battery 9 is placed downwards on the negative electrode conductive part on the negative electrode connecting plate 22, the spring thimble 23 is put down, the spring thimble 23 is made to be in contact with the positive electrode of the tested battery 9, whether the positive electrode and the negative electrode of the tested battery 9 are in good contact is checked, and 12 batteries can be simultaneously subjected to discharge test at one time. The resistance value to be discharged is selected by the resistance switching button 53, and the discharge is started by the state switching button 52. The parameters of discharge of the current single or multiple batteries 9 to be tested, such as discharge current, discharge voltage, discharge time, starting voltage, voltage during discharge and battery capacity, can be checked through the parameter switching key 51. And waiting until the battery discharge is complete. The discharge is stopped by the state switching key 52. The communication interface 6 (such as ase:Sub>A USB-A interface) can be connected to ase:Sub>A computer to lead out discharge datase:Sub>A, so that ase:Sub>A discharge capacity curve is made, and the battery capacity condition can be checked more visually.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".

In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.

As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. In addition, in the description of the embodiments of the present application, "a plurality" means two or more (including two), and expressions related to "a plurality" similar thereto are also understood, for example, "a plurality of groups", "a plurality of times", and the like, unless specifically defined otherwise.

In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are for convenience of description of the specific embodiments of the present application or for ease of understanding by the reader only, and do not indicate or imply that a device or component referred to must have a specific position, a specific orientation, or be configured or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application are to be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent flow changes made by using the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the scope of the present invention.

Claims (10)

1. A button cell discharge capacity detection box, characterized by, including:

the battery connecting module is used for being connected with a tested battery;

the voltage detection module is used for detecting the voltage of the battery to be detected;

the discharging circuit comprises a plurality of resistors connected in parallel and a switch connected with each resistor in series, and the plurality of resistors connected in parallel are connected with the battery connecting module;

the processing unit is connected with the battery connection module, the voltage detection module and the switch of the discharge circuit;

and the box body is used for accommodating the battery connection module, the voltage detection module, the discharge circuit and the processing unit.

2. The button cell discharge capacity detecting case according to claim 1, further comprising a protection plate; the protection board is movably arranged on the box body and used for covering the tested battery.

3. The button cell discharge capacity detecting box according to claim 1, further comprising a display module; the display module is connected with the processing unit and used for displaying discharge parameters of the battery to be detected, and the discharge parameters comprise discharge current, discharge voltage, discharge time, initial voltage or battery capacity.

4. The button cell discharge capacity detecting box according to claim 1, wherein the cell connecting module comprises a positive connecting plate and a negative connecting plate; the positive connecting plate is provided with a positive conductive part, the negative connecting plate is provided with a negative conductive part, the positive conductive part is opposite to the negative conductive part, and the positive conductive part is connected with the negative conductive part and is connected with a tested battery.

5. The button cell discharge capacity detecting case according to claim 4, wherein the battery connecting module further comprises a pogo pin; the spring thimble is arranged on the positive electrode conductive part or the negative electrode conductive part.

6. The box of claim 5, wherein said plurality of pogo pins are provided, said positive connecting plate has a plurality of positive conductive portions thereon, said negative connecting plate has a plurality of negative conductive portions thereon, one pogo pin is provided on each of said positive conductive portions or said negative conductive portions, each of said positive conductive portions is connected to the processing unit through a discharge circuit, and each of said negative conductive portions is grounded.

7. The button cell discharge capacity detecting box according to any one of claims 1 to 6, further comprising a key module, wherein the key module is connected with the processing unit; the key module comprises a parameter switching key, and the parameter switching key is used for sending an instruction for checking the discharge parameters to the processing unit; and/or:

the key module comprises a state switching key, and the state switching key is used for sending a command of starting or stopping battery discharge to the processing unit; and/or:

the key module comprises a resistance switching key, and the resistance switching key is used for sending an instruction for closing or opening the switch to the processing unit.

8. The button cell discharge capacity detecting case according to any one of claims 1 to 6, further comprising a power circuit; the power circuit is connected with the processing unit and is used for supplying power to the button battery discharge capacity detection box.

9. The button cell discharge capacity detecting box according to claim 8, wherein the power circuit comprises a battery circuit, and the battery circuit is connected with the processing unit.

10. The button cell discharge capacity detecting case according to any one of claims 1 to 6, wherein the voltage detecting module is an analog-to-digital converter.

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