CN210243801U

CN210243801U - Equivalent impedance measuring device for battery

Info

Publication number: CN210243801U
Application number: CN201921021553.XU
Authority: CN
Inventors: Haibin Wang; 王海斌; Junjie Shen; 沈俊杰; Xiantao Chen; 陈现涛; Qiang Sun; 孙强; Song Xie; 谢松; Jia Xu; 徐佳; Yuanhua He; 贺元骅; Jun Guo; 郭君
Original assignee: Civil Aviation Flight University of China
Current assignee: Civil Aviation Flight University of China
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-04-03
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses an equivalent impedance measuring device for battery, the on-line screen storage device comprises a base, the fixed welding in upper end of base has the metal support frame, it has the stand to slide to peg graft on the metal support frame, the upper end fixedly connected with clamp plate of stand, and the insulating installation piece of lower extreme fixedly connected with of stand, insulating installation piece sets up to the insulating installation piece of cavity, be provided with fixed probe and activity probe on the insulating installation piece respectively. The utility model discloses a be provided with stand, clamp plate, compression spring and insulation installation piece to be provided with fixed probe and activity probe on insulation installation piece respectively, and there is the bar copper in insulation installation piece's inside through fixture block fixed mounting, and the electrically conductive connecting block has been cup jointed in the slip on the bar copper, and with activity probe electric connection in the lower extreme of electrically conductive connecting block, can adjust the interval between fixed probe and the activity probe according to the specification of test battery, be applicable to the measurement of the battery of different specifications.

Description

Equivalent impedance measuring device for battery

Technical Field

The utility model relates to an equivalent impedance of battery measures technical field, specifically is an equivalent impedance measuring device for battery.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, the dynamic characteristics of the battery can be effectively measured by the equivalent impedance test of the lithium battery, the current method widely adopts a classic Thevenin equivalent circuit to match with an ideal voltage source, and a series resistor and a first-order RC circuit are used for measuring the dynamic characteristics of the battery, in order to more accurately measure the equivalent impedance of the battery at different environmental temperatures, the first-order parallel RC circuit is added on the basis of the original circuit during measurement, so that the ohmic internal resistance, the polarization internal resistance and the polarization capacitance in the equivalent circuit are changed along with the environmental temperature, and the equivalent impedance measurement accuracy of the battery is improved.

The existing technology mostly adopts a simple self-made testing device when measuring the equivalent impedance of a battery, and in actual use, the distance between testing probes cannot be adjusted, so that the testing probes cannot be suitable for measuring batteries with different specifications, and the application range is small, therefore, the equivalent impedance measuring device for the battery is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an equivalent impedance measuring device for batteries, which is provided with a stand column, a pressing plate, a compression spring and an insulating mounting block, wherein the insulating mounting block is respectively provided with a fixed probe and a movable probe, the insulating mounting block is internally and fixedly provided with a copper bar through a clamping block, the copper bar is sleeved with a conductive connecting block in a sliding way, the movable probe is electrically connected with the lower end of the conductive connecting block, the distance between the fixed probe and the movable probe can be adjusted according to the actual specification of a test battery, the equivalent impedance measuring device is suitable for the measurement of batteries with different specifications, the side wall of a groove is provided with a chute by arranging a groove on the fixed block, the inside of the chute is inserted with a baffle in a sliding way, the chute is symmetrically arranged with no less than four groups on the inner wall of the groove, the groove can be cut by the baffle according to the size of, it is convenient to fix batteries with different external dimensions to solve the problems in the background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an equivalent impedance measuring device for a battery comprises a base, wherein a metal support frame is fixedly welded at the upper end of the base, the metal supporting frame is inserted with a column in a sliding way, the upper end of the column is fixedly connected with a pressing plate, and the lower end of the upright post is fixedly connected with an insulating mounting block which is a hollow insulating mounting block, the insulation mounting block is respectively provided with a fixed probe and a movable probe, the upper end of the base is fixedly provided with an equivalent impedance measurement module body, the fixed probe is electrically connected with the anode of the equivalent impedance measuring module body through a connecting wire, the upper end of the base is fixedly provided with a fixed block for fixing a battery, and the fixed block is positioned under the insulating mounting block, a groove is formed in the fixed block, a sliding groove is formed in the side wall of the groove, and a baffle is inserted in the sliding groove in a sliding mode.

Preferably, the inside of insulating installation piece has the bar copper through fixture block fixed mounting, the electrically conductive connecting block has been cup jointed in the slip on the bar copper, activity probe electric connection is in the lower extreme of electrically conductive connecting block, the negative pole of connecting wire electric connection in equivalent impedance measurement module body is passed through to the one end of bar copper.

Preferably, a through hole is formed in one end of the conductive connecting block, and the copper rod is located inside the through hole.

Preferably, the sliding grooves are symmetrically provided with not less than four groups on the inner wall of the groove.

Preferably, rubber pads are fixedly bonded on one side of the baffle and the inner wall of the groove opposite to the baffle, and the rubber pads are elastic rubber pads with rough surfaces.

Preferably, the upright post is sleeved with a compression spring, one end of the compression spring is fixedly connected to the lower surface of the pressing plate, and the other end of the compression spring is fixedly connected to the upper end of the metal support frame.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with stand, clamp plate, compression spring and insulating installation piece to be provided with fixed probe and activity probe respectively on insulating installation piece, and through fixture block fixed mounting have the bar copper in the inside of insulating installation piece, the slip has cup jointed the electrically conductive connecting block on the bar copper, and with activity probe electric connection in the lower extreme of electrically conductive connecting block, can adjust the interval between fixed probe and the activity probe according to the actual specification of test battery, be applicable to the measurement of the battery of different specifications;

2. the utility model discloses a set up flutedly on the fixed block, seted up the spout on the lateral wall of recess to and it has the baffle to slide to peg graft in the inside of spout, and set up the spout on groove inner wall symmetrically and be not less than four groups, can cut apart the recess with the baffle according to the size of test battery, be convenient for fix different overall dimension's battery.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the insulating mounting block of the present invention;

fig. 3 is a schematic view of the structure of the fixing block of the present invention;

fig. 4 is a schematic view of the structure of the conductive connecting block of the present invention.

In the figure: 1. a base; 2. a metal support frame; 3. a column; 4. pressing a plate; 5. an insulating mounting block; 6. immobilizing the probe; 7. a movable probe; 8. an equivalent impedance measurement module body; 9. a fixed block; 10. a groove; 11. a chute; 12. a baffle plate; 13. a copper bar; 14. a conductive connecting block; 15. a rubber pad; 16. a compression spring; 17. and a through hole.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the equivalent impedance measuring device for the battery comprises a base 1, a metal support frame 2 is fixedly welded at the upper end of the base 1, an upright post 3 is inserted on the metal support frame 2 in a sliding way, a pressing plate 4 is fixedly connected at the upper end of the upright post 3, and the lower end of the upright post 3 is fixedly connected with an insulating mounting block 5, the insulating mounting block 5 is a hollow insulating mounting block, the insulating mounting block 5 is respectively provided with a fixed probe 6 and a movable probe 7, the upper end of the base 1 is fixedly provided with an equivalent impedance measuring module body 8, the fixed probe 6 is electrically connected with the anode of the equivalent impedance measuring module body 8 through a connecting wire, the upper end of the base 1 is fixedly provided with a fixed block 9 for fixing a battery, and the fixed block 9 is located under the insulating mounting block 5, and the fixed block 9 is provided with a groove 10, and the side wall of the groove 10 is provided with a chute 11, and a baffle 12 is inserted in the chute 11 in a sliding manner.

Specifically, the inside of the insulating mounting block 5 is fixedly provided with a copper bar 13 through a clamping block, the copper bar 13 is sleeved with a conductive connecting block 14 in a sliding manner, the movable probe 7 is electrically connected to the lower end of the conductive connecting block 14, and one end of the copper bar 13 is electrically connected to the negative electrode of the equivalent impedance measuring module body 8 through a connecting wire. The movable probe 7 is electrically connected to the cathode of the equivalent impedance measuring module body 8 through the copper bar 13.

Specifically, one end of the conductive connecting block 14 is provided with a through hole 17, and the copper rod 13 is located inside the through hole 17. When the movable probe 7 is moved, the movable probe 7 is contacted with the copper bar 13 through the conductive connecting block 14, so that the movable probe 7 is electrically connected with the cathode of the equivalent impedance measuring module body 8 after moving.

Specifically, the inner wall of the groove 10 of the sliding groove 11 is symmetrically provided with not less than four groups.

Specifically, rubber pads 15 are fixedly bonded to one side of the baffle 12 and the inner wall of the groove 10 opposite to the baffle 12, and the rubber pads 15 are elastic rubber pads with rough surfaces. It is convenient to increase the friction between the baffle 12 and the battery, thereby making the fixation firm.

Specifically, a compression spring 16 is sleeved on the upright post 3, one end of the compression spring 16 is fixedly connected to the lower surface of the pressing plate 4, and the other end of the compression spring 16 is fixedly connected to the upper end of the metal support frame 2. The pressing plate 4 can be conveniently rebounded by the compression spring 16 after the pressing plate 4 is pressed for measurement.

The working principle is as follows: the utility model discloses a through being provided with stand 3, clamp plate 4, compression spring 16 and insulating installation piece 5, and be provided with fixed probe 6 and activity probe 7 respectively on insulating installation piece 5, and install the bar copper through fixture block fixed mounting in insulating installation piece 5, the slip has cup jointed electrically conductive connecting block 14 on bar copper 13, and with activity probe 7 electrical connection in the lower extreme of electrically conductive connecting block 14, can adjust the interval between fixed probe 6 and the activity probe 7 according to the actual specification of test battery, be applicable to the measurement of the battery of different specifications, through seting up recess 10 on fixed block 9, set up spout 11 on the lateral wall of recess 10, and slip the grafting has baffle 12 in the inside of spout 11, and set up spout 11 on the recess 10 inner wall symmetrically and be not less than four groups, can cut apart recess 10 with baffle 12 according to the size of test battery, the batteries with different external dimensions can be fixed conveniently.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An equivalent impedance measuring device for a battery, comprising a base (1), characterized in that: the battery pack is characterized in that a metal support frame (2) is fixedly welded at the upper end of the base (1), a stand column (3) is inserted on the metal support frame (2) in a sliding manner, a pressing plate (4) is fixedly connected at the upper end of the stand column (3), an insulating mounting block (5) is fixedly connected at the lower end of the stand column (3), the insulating mounting block (5) is set to be a hollow insulating mounting block, a fixed probe (6) and a movable probe (7) are respectively arranged on the insulating mounting block (5), an equivalent impedance measuring module body (8) is fixedly installed at the upper end of the base (1), the fixed probe (6) is electrically connected to the positive electrode of the equivalent impedance measuring module body (8) through a connecting wire, a fixed block (9) for fixing a battery is fixedly installed at the upper end of the base (1), and the fixed block (9) is positioned under the, the fixing block (9) is provided with a groove (10), the side wall of the groove (10) is provided with a sliding groove (11), and a baffle (12) is inserted in the sliding groove (11) in a sliding mode.

2. An equivalent impedance measuring apparatus for a battery according to claim 1, wherein: the inside of insulating installation piece (5) has bar copper (13) through fixture block fixed mounting, the slip has cup jointed electrically conductive connecting block (14) on bar copper (13), activity probe (7) electric connection is in the lower extreme of electrically conductive connecting block (14), the negative pole of connecting wire electric connection in equivalent impedance measurement module body (8) is passed through to the one end of bar copper (13).

3. An equivalent impedance measuring apparatus for a battery according to claim 2, wherein: one end of the conductive connecting block (14) is provided with a through hole (17), and the copper rod (13) is positioned in the through hole (17).

4. An equivalent impedance measuring apparatus for a battery according to claim 1, wherein: and no less than four groups of sliding chutes (11) are symmetrically arranged on the inner wall of the groove (10).

5. An equivalent impedance measuring apparatus for a battery according to claim 1, wherein: rubber pads (15) are fixedly bonded on one side of the baffle (12) and the inner wall of the groove (10) opposite to the baffle (12), and the rubber pads (15) are elastic rubber pads with rough surfaces.

6. An equivalent impedance measuring apparatus for a battery according to claim 1, wherein: the upright post (3) is sleeved with a compression spring (16), one end of the compression spring (16) is fixedly connected to the lower surface of the pressing plate (4), and the other end of the compression spring (16) is fixedly connected to the upper end of the metal support frame (2).