Device for measuring internal resistance of battery through digital bridge measuring instrument

Abstract

The utility model relates to a device for measuring the internal resistance of a battery through a digital bridge measuring instrument. The device comprises the digital bridge measuring instrument (LCR Meter); and the test circuit comprises a test port and a battery mounting seat, the test port and the battery mounting seat are connected with the digital bridge measuring instrument (LCR Meter), and the test circuit is connected with the digital bridge measuring instrument (LCR Meter). Through simple design, the digital bridge meter (LCR Meter) can test the resistance value of the internal resistance of the battery.

Description

Technical Field

[0001] The present disclosure belongs to the field of electronic test instruments, and particularly relates to a device for measuring the internal resistance of a battery by means of a digital bridge measuring instrument. Background Art

[0002] A digital bridge measuring instrument (LCR Meter) can only measure the resistance values of passive devices, such as the magnitudes of inductance, capacitance, resistance, and impedance, and cannot measure the resistance value of the internal resistance of a battery. Utility Model Content

[0003] The present utility model provides a device for measuring the internal resistance of a battery by means of a digital bridge measuring instrument, aiming to solve at least one of the technical problems existing in the prior art.

[0004] The technical solution of the present utility model is a device for measuring the internal resistance of a battery by means of a digital bridge measuring instrument, including:

[0005] A digital bridge measuring instrument (LCR Meter);

[0006] A test circuit, the test circuit includes a test port and a battery mounting base connected to the digital bridge measuring instrument (LCR Meter), and the test circuit is connected to the digital bridge measuring instrument (LCR Meter).

[0007] Further, the test port includes LCR_HC terminal, LCR_HP terminal, LCR_LP terminal, and LCR_LC terminal. The LCR_HC terminal is connected to the Hcur port of the digital bridge measuring instrument (LCR Meter) through a cable, the LCR_HP terminal is connected to the Hpot port of the digital bridge measuring instrument (LCR Meter) through a cable, the LCR_LP terminal is connected to the Lpot port of the digital bridge measuring instrument (LCR Meter) through a cable, and the LCR_LC terminal is connected to the Lcur port of the digital bridge measuring instrument (LCR Meter) through a cable.

[0008] Further, the LCR_HC terminal, LCR_HP terminal, LCR_LP terminal, and LCR_LC terminal included in the test port are all SMB terminals.

[0009] Further, the test circuit includes a first capacitor C1, a second capacitor C2, a first resistor R1, BATTERY_HC terminal, BATTERY_HP terminal, BATTERY_LP terminal, and BATTERY_LC terminal.

[0010] The first end of the first capacitor C1 is connected to the LCR_HC terminal, and the second end of the first capacitor C1 is connected to the BATTERY_HC terminal.

[0011] The first end of the second capacitor C2 is connected to the LCR_HP terminal, and the second end of the second capacitor C2 is connected to the BATTERY_HP terminal;

[0012] The first end of the first resistor R1 is connected to the LCR_HP terminal, and the second end of the first resistor R1 is connected to the LCR_LP terminal;

[0013] The LCR_LC terminal is connected to the BATTERY_LC terminal.

[0014] Furthermore, the BATTERY_HC terminal, the BATTERY_HP terminal, the BATTERY_LP terminal, and the BATTERY_LC terminal are all SMB terminals.

[0015] Furthermore, the resistance value of the first resistor R1 is greater than 47 kΩ.

[0016] Furthermore, the first capacitor C1 is 15 μF, the second capacitor C2 is 100 nF, and the first resistor R1 is 100 kΩ.

[0017] Furthermore, it further includes a host computer, and the host computer is connected to the digital bridge measuring instrument (LCR Meter) through a USB cable.

[0018] Furthermore, the battery mounting base includes a bottom plate, a positive electrode mounting plate, a negative electrode mounting plate, side plates, a first wiring terminal, a second wiring terminal, a third wiring terminal, and a fourth wiring terminal,

[0019] The positive electrode mounting plate, the negative electrode mounting plate, and the side plates are mounted on the bottom plate, and the battery is mounted in the space formed by the positive electrode mounting plate, the negative electrode mounting plate, the side plates, and the bottom plate,

[0020] The positive electrode of the battery is respectively connected to the first wiring terminal and the second wiring terminal, and the negative electrode of the battery is respectively connected to the third wiring terminal and the fourth wiring terminal.

[0021] The beneficial effects of the present utility model are as follows,

[0022] In this application, through a simple design, the digital bridge measuring instrument (LCR Meter) can measure the resistance value of the battery internal resistance. Brief Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the test block diagram of the device for measuring the battery internal resistance by the digital bridge measuring instrument of the present utility model.

[0024] Figure 2 It is a schematic diagram of the test circuit of the device for measuring the battery internal resistance by the digital bridge measuring instrument of the present utility model.

[0025] Figure 3 It is the front projection diagram of the circuit board of the test circuit of the device for measuring the internal resistance of a battery by a digital bridge measuring instrument of the present utility model.

[0026] Figure 4 It is the circuit diagram of the test circuit of the device for measuring the internal resistance of a battery by a digital bridge measuring instrument of the present utility model.

[0027] Figure 5 It is the schematic diagram of the battery mounting base of the device for measuring the internal resistance of a battery by a digital bridge measuring instrument of the present utility model.

[0028] Figure 6 It is the schematic diagram of the test application of the device for measuring the internal resistance of a battery by a digital bridge measuring instrument of the present utility model.

[0029] In the above figures, 100 is the digital bridge measuring instrument; 200 is the test circuit; 201 is the LCR_HC terminal; 202 is the LCR_HP terminal; 203 is the LCR_LP terminal; 204 is the LCR_LC terminal; 205 is the first capacitor; 206 is the second capacitor; 207 is the first resistor; 208 is the BATTERY_HC terminal; 209 is the BATTERY_HP terminal; 210 is the BATTERY_LP terminal; 211 is the BATTERY_LC terminal; 220 is the battery mounting base; 221 is the bottom plate; 222 is the positive electrode mounting plate; 223 is the negative electrode mounting plate; 224 is the side plate; 225 is the first wiring terminal; 226 is the second wiring terminal; 227 is the third wiring terminal; 228 is the fourth wiring terminal; 300 is the upper computer. Specific embodiments

[0030] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and the drawings, so as to fully understand the purpose, solution and effects of the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, top, bottom, etc. used in the present utility model are only relative to the mutual positional relationship of the components of the present utility model in the drawings.

[0032] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this technology belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any combination of one or more of the related listed items.

[0033] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of this disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0034] Referring to Figures 1 to 6 , in this application, a device for measuring the internal resistance of a battery by a digital bridge measuring instrument is proposed, including:

[0035] A digital bridge measuring instrument 100 (LCR Meter);

[0036] A test circuit 200, the test circuit 200 includes a test port connected to the digital bridge measuring instrument 100 (LCR Meter) and a battery mount 220, and the test circuit 200 is connected to the digital bridge measuring instrument 100 (LCR Meter).

[0037] Further, referring to Figures 2 to 4 , the test port includes an LCR_HC terminal 201, an LCR_HP terminal 202, an LCR_LP terminal 203, and an LCR_LC terminal 204. The LCR_HC terminal 201 is connected to the Hcur port of the digital bridge measuring instrument 100 (LCR Meter) through a cable, the LCR_HP terminal 202 is connected to the Hpot port of the digital bridge measuring instrument 100 (LCR Meter) through a cable, the LCR_LP terminal 203 is connected to the Lpot port of the digital bridge measuring instrument 100 (LCR Meter) through a cable, and the LCR_LC terminal 204 is connected to the Lcur port of the digital bridge measuring instrument 100 (LCR Meter) through a cable.

[0038] Further, referring to Figures 2 to 4 , the test port includes the LCR_HC terminal 201, the LCR_HP terminal 202, the LCR_LP terminal 203, and the LCR_LC terminal 204, all of which are SMB terminals.

[0039] Further, referring to Figures 2 to 4, the test circuit 200 includes a first capacitor C1 205, a second capacitor C2 206, a first resistor R1 207, a BATTERY_HC terminal 208, a BATTERY_HP terminal 209, a BATTERY_LP terminal 210, and a BATTERY_LC terminal 211,

[0040] A first end of the first capacitor C1 205 is connected to an LCR_HC terminal 201, and a second end of the first capacitor C1 205 is connected to the BATTERY_HC terminal 208;

[0041] A first end of the second capacitor C2 206 is connected to an LCR_HP terminal 202, and a second end of the second capacitor C2 206 is connected to the BATTERY_HP terminal 209;

[0042] A first end of the first resistor R1 207 is connected to the LCR_HP terminal 202, and a second end of the first resistor R1 207 is connected to an LCR_LP terminal 203;

[0043] The LCR_LC terminal 204 is connected to the BATTERY_LC terminal 211.

[0044] Further, referring to Figures 2 to 4 , the BATTERY_HC terminal 208, the BATTERY_HP terminal 209, the BATTERY_LP terminal 210, and the BATTERY_LC terminal 211 are all SMB terminals.

[0045] Further, referring to Figures 2 to 4 , the resistance value of the first resistor R1 207 is greater than 47 kΩ. The first resistor R1 207 is used to prevent oscillation.

[0046] Further, referring to Figures 2 to 4 , the first capacitor C1 205 is 15 uf, the second capacitor C2 206 is 100 nf, and the first resistor R1 207 is 100 kΩ.

[0047] Further, referring to Figure 1 and Figure 6 , it further includes a host computer 300, and the host computer 300 is connected to the digital bridge measuring instrument 100 (LCR Meter) through a USB cable.

[0048] Further, referring to Figure 5 , the battery mounting base 220 includes a bottom plate 221, a positive electrode mounting plate 222, a negative electrode mounting plate 223, side plates 224, a first wiring terminal 225, a second wiring terminal 226, a third wiring terminal 227, and a fourth wiring terminal 228,

[0049] The positive electrode mounting plate 222, the negative electrode mounting plate 223 and the side plate 224 are mounted on the bottom plate 221, and the battery is mounted in the space formed by the positive electrode mounting plate 222, the negative electrode mounting plate 223, the side plate 224 and the bottom plate 221.

[0050] The positive electrode of the battery is respectively connected to the first wiring terminal 225 and the second wiring terminal 226, and the negative electrode of the battery is respectively connected to the third wiring terminal 227 and the fourth wiring terminal 228.

[0051] In a specific embodiment, the battery models available for testing at least include No. 1 battery, No. 2 battery, No. 5 battery, No. 7 battery, No. 8 battery, and No. 9 battery.

[0052] The beneficial effects of the present utility model are as follows.

[0053] In this application, through a simple design, the digital bridge measuring instrument 100 (LCR Meter) can measure the resistance value of the battery internal resistance.

[0054] As mentioned above, it is only a preferred embodiment of the present utility model. The present utility model is not limited to the above-mentioned implementation manners. As long as it achieves the technical effects of the present utility model by the same means, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure. All of them shall belong to the protection scope of the present utility model. Within the protection scope of the present utility model, its technical solutions and / or implementation manners can have various different modifications and changes.

Claims

1. A device for measuring the internal resistance of a battery using a digital bridge measuring instrument, characterized in that, Comprising: Digital bridge measuring instrument LCR Meter (100); A test circuit (200), the test circuit (200) includes a test port and a battery mount (220) connected to the digital bridge measuring instrument LCR Meter (100), and the test circuit (200) is connected to the digital bridge measuring instrument LCR Meter (100); The test port includes an LCR_HC terminal (201), an LCR_HP terminal (202), an LCR_LP terminal (203), and an LCR_LC terminal (204). The LCR_HC terminal (201) is connected to the Hcur port of the digital bridge measuring instrument LCR Meter (100) through a cable. The LCR_HP terminal (202) is connected to the Hpot port of the digital bridge measuring instrument LCR Meter (100) through a cable. The LCR_LP terminal (203) is connected to the Lpot port of the digital bridge measuring instrument LCR Meter (100) through a cable. The LCR_LC terminal (204) is connected to the Lcur port of the digital bridge measuring instrument LCR Meter (100) through a cable.

2. The device for measuring the internal resistance of a battery through a digital bridge measuring instrument according to claim 1, wherein The LCR_HC terminal (201), the LCR_HP terminal (202), the LCR_LP terminal (203), and the LCR_LC terminal (204) of the test port are all SMB terminals.

3. The device for measuring the internal resistance of a battery through a digital bridge measuring instrument according to claim 1, wherein The test circuit (200) includes a first capacitor C1 (205), a second capacitor C2 (206), a first resistor R1 (207), a BATTERY_HC terminal (208), a BATTERY_HP terminal (209), a BATTERY_LP terminal (210), and a BATTERY_LC terminal (211). The first end of the first capacitor C1 (205) is connected to the LCR_HC terminal (201), and the second end of the first capacitor C1 (205) is connected to the BATTERY_HC terminal (208); The first end of the second capacitor C2 (206) is connected to the LCR_HP terminal (202), and the second end of the second capacitor C2 (206) is connected to the BATTERY_HP terminal (209); The first end of the first resistor R1 (207) is connected to the LCR_HP terminal (202), and the second end of the first resistor R1 (207) is connected to the LCR_LP terminal (203); The LCR_LC terminal (204) is connected to the BATTERY_LC terminal (211).

4. The device for measuring the internal resistance of a battery through a digital bridge measuring instrument according to claim 3, wherein The BATTERY_HC terminal (208), the BATTERY_HP terminal (209), the BATTERY_LP terminal (210), and the BATTERY_LC terminal (211) are all SMB terminals.

5. The device for measuring the internal resistance of a battery by a digital bridge measuring instrument according to claim 3, wherein the resistance value of the first resistor R1 (207) is greater than 47 kΩ.

6. The device for measuring the internal resistance of a battery by a digital bridge measuring instrument according to claim 3, wherein the first capacitor C1 (205) is 15 μF, the second capacitor C2 (206) is 100 nF, and the first resistor R1 (207) is 100 kΩ.

7. The device for measuring the internal resistance of a battery by a digital bridge measuring instrument according to claim 1, wherein it further includes a host computer (300), and the host computer (300) is connected to the digital bridge measuring instrument LCR Meter (100) through a USB cable.

8. The device for measuring the internal resistance of a battery by a digital bridge measuring instrument according to claim 1, wherein the battery mounting base (220) includes a bottom plate (221), a positive electrode mounting plate (222), a negative electrode mounting plate (223), side plates (224), a first wiring terminal (225), a second wiring terminal (226), a third wiring terminal (227), and a fourth wiring terminal (228), the positive electrode mounting plate (222), the negative electrode mounting plate (223), and the side plates (224) are mounted on the bottom plate (221), and the battery is mounted in the space formed by the positive electrode mounting plate (222), the negative electrode mounting plate (223), the side plates (224), and the bottom plate (221), the positive electrode of the battery is respectively connected to the first wiring terminal (225) and the second wiring terminal (226), and the negative electrode of the battery is respectively connected to the third wiring terminal (227) and the fourth wiring terminal (228).

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