CN212008873U - Device for detecting voltage and internal resistance of battery - Google Patents
Device for detecting voltage and internal resistance of battery Download PDFInfo
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- CN212008873U CN212008873U CN202020539940.9U CN202020539940U CN212008873U CN 212008873 U CN212008873 U CN 212008873U CN 202020539940 U CN202020539940 U CN 202020539940U CN 212008873 U CN212008873 U CN 212008873U
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Abstract
The utility model relates to a detect technical field, disclose a device for battery voltage internal resistance detects, including PMKD, cylinder, holding down plate, test probe and locating plate, the cylinder sets up in PMKD's top, the cylinder pole fixed connection of holding down plate and cylinder, the upper end of test probe respectively with holding down plate horizontal sliding connection, the locating plate setting is on PMKD's up end, the up end of locating plate is spaced concave respectively and is equipped with two constant head tanks that can hold square lithium cell, the test probe sets up the top at the constant head tank respectively, just the lower tip of test probe can be connected with the positive plate and the negative pole piece butt electricity of square lithium cell upper end respectively. The technical scheme of the utility model can effectively improve the efficiency of software testing and the precision of battery internal resistance and voltage, and easy operation, convenient to use, the practicality is strong.
Description
Technical Field
The utility model relates to a detect technical field, in particular to a device for battery voltage internal resistance detects.
Background
The square lithium battery refers to a lithium battery with a rectangular shape, and the main components of the square lithium battery comprise: the device comprises a top cover, a shell, a lamination or winding formed by a positive plate, a negative plate and a diaphragm, an insulating part, a safety component and the like. In general, the smaller the internal resistance of the battery is, the stronger the large-current discharge capability is; the discharge capacity of the battery having a large internal resistance is weak. The internal resistance of the new battery is low, the internal resistance of the old battery is high, and the service life of the battery can be judged from the internal resistance of the battery. The internal resistance values of the batteries are different in different SOC states and different in different discharge current values, so that the internal resistance generally refers to the internal resistance when the batteries are fully charged. Especially for power batteries, the internal resistance is to be tested for the change in the whole charging and discharging process. The cell manufacturers usually evaluate whether the cells are qualified or not by detecting the internal resistance of the battery, and evaluate the process such as the spraying effect, riveting effect and the like of the anode and cathode materials by detecting the waveform of the voltage of the battery.
However, most of the voltage and internal resistance tests of the conventional square lithium battery adopt a meter pen to measure, and because of the characteristics of the meter pen, the voltage and internal resistance tests need to be manually measured on a positive plate and a negative plate, so that each person exerts different forces and different contact positions during the test, the error of the measured voltage and the internal resistance is large, the pole pieces are easily scratched, the production efficiency is low, and the labor intensity is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device for battery voltage internal resistance detects, aim at solving the detection of current square lithium cell survey voltage and internal resistance and adopt artifical the detection, inefficiency, the error is great, the technical problem of easy fish tail pole piece.
In order to realize the above-mentioned purpose, the utility model provides a device for battery voltage internal resistance detects, including PMKD, cylinder, holding down plate, test probe and locating plate, the cylinder sets up PMKD's top, the holding down plate with the cylinder pole fixed connection of cylinder, and follow the cylinder pole up-and-down motion of cylinder, the upper end of test probe respectively with holding down plate horizontal sliding connection, the locating plate sets up on PMKD's the up end, the up end of locating plate is spaced concave respectively and is equipped with two constant head tanks that can hold square lithium cell, the setting of vertical parallel of test probe difference is in the top of constant head tank, just the lower tip of test probe can be connected with the positive plate and the negative pole piece butt electricity of square lithium cell upper end respectively.
Further, still include cylinder backup pad and cylinder mounting panel, the setting of cylinder backup pad vertical parallel respectively is in the both sides of PMKD's rear end portion, the both ends of cylinder mounting panel respectively with the upper end fixed connection of cylinder backup pad, the cylinder sets up on the up end of cylinder mounting panel, the gliding setting from top to bottom of holding down plate is in the below of cylinder mounting panel.
The cylinder mounting plate is characterized by further comprising a guide pillar and a sliding sleeve, wherein the sliding sleeve is embedded in two sides of the cylinder mounting plate respectively, the lower end portion of the guide pillar is fixed on two sides of the upper end wall of the lower pressing plate respectively, and the upper end portion of the guide pillar can penetrate through the sliding sleeve in a vertically sliding mode.
Furthermore, the test device also comprises a mounting bracket, the upper end part of the mounting bracket is respectively connected with the lower pressing plate in a left-right sliding manner, and the test probes are respectively arranged at the lower end part of the mounting bracket.
The upper end part of the mounting bracket is fixedly connected with the upper end part of the sliding block, and the mounting bracket is respectively connected with the lower pressing plate in a sliding manner through the sliding block and the sliding groove.
Furthermore, the bottom of the test probe is respectively provided with a sawtooth convex strip in a protruding way.
Furthermore, four bottom corners of the fixed bottom plate are respectively provided with a supporting leg in a protruding way.
Adopt the technical scheme of the utility model, following beneficial effect has: the technical scheme of the utility model, set up in the top of the fixed baseplate through the cylinder, the holding down plate is fixedly connected with the cylinder pole of cylinder, and move from top to bottom along with the cylinder pole of cylinder, the upper end of test probe is respectively with holding down plate side to side sliding connection, the locating plate sets up on the up end of fixed baseplate, the up end of locating plate is respectively spaced concave and is equipped with two constant head tanks that can hold square lithium cell, the test probe is vertical parallel setting respectively in the top of constant head tank, and the test probe can be connected with the positive plate and the negative pole piece butt electricity of square lithium cell respectively, the test probe is connected with corresponding data detection instrument, thus detect internal resistance and voltage value of battery; during specific test, at first in putting into the constant head tank through waiting to detect the battery, through cylinder drive test probe downstream, until being connected with the positive plate and the negative pole piece butt electricity of battery, compress tightly the battery through the test probe and fix in the constant head tank, it is not hard up to avoid the battery to appear the displacement in the test, thereby effectively reduce measuring error, and can effectively avoid the scratch of adjusting positive plate and negative pole piece, but the position horizontal slip of test probe adjusts, adaptability is wide, the efficiency of software testing and the precision of battery internal resistance and voltage have effectively been improved, and easy operation, high durability and convenient use, therefore, the clothes hanger is strong in practicability.
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 an overall structure of an apparatus for detecting internal resistance of battery voltage according to an embodiment of the present invention;
fig. 2 is a schematic overall structure diagram of another view angle of an apparatus for detecting internal resistance of battery voltage according to an embodiment of the present invention;
fig. 3 is a schematic overall structure diagram of another view angle of an apparatus for detecting internal resistance of battery voltage according to an embodiment of the present invention;
fig. 4 is an enlarged view of a point a in fig. 1.
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 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 device for battery voltage internal resistance detects.
As shown in fig. 1 to 4, in an embodiment of the present invention, the device for detecting internal resistance of battery voltage includes a fixed base plate 101, a cylinder 102, a lower pressing plate 103, a testing probe 104 and a positioning plate 105, wherein the cylinder 102 is disposed above the fixed base plate 101, the lower pressing plate 103 is fixedly connected to a cylinder rod of the cylinder 102 and moves up and down along with the cylinder rod of the cylinder 102, an upper end of the testing probe 104 is slidably connected to the lower pressing plate 103 left and right, the positioning plate 105 is disposed on an upper end surface of the fixed base plate 101, two positioning slots 1051 capable of accommodating a square lithium battery are respectively disposed on the upper end surface of the positioning plate 105 at intervals and concavely, the testing probe 104 is respectively disposed above the positioning slots 1051 in a vertical parallel manner, and a lower end of the testing probe 104 is respectively capable of being electrically connected to a positive plate and a negative plate of the square lithium battery in a butting manner, the internal resistance and voltage of the battery are detected.
Specifically, still include cylinder backup pad 106 and cylinder mounting panel 107, cylinder backup pad 106 is vertical parallel setting respectively and is in the both sides of the rear end of PMKD 101, the both ends of cylinder mounting panel 107 respectively with the upper end fixed connection of cylinder backup pad 106, cylinder 102 sets up on the up end of cylinder mounting panel 107, the setting that holding down plate 103 can be slided from top to bottom is in the below of cylinder mounting panel 107.
Specifically, the device further comprises a guide post 108 and a sliding sleeve 109, wherein the sliding sleeve 109 is respectively embedded in two sides of the cylinder mounting plate 107, the lower end of the guide post 108 is respectively fixed on two sides of the upper end wall of the lower pressing plate 103, and the upper end of the guide post 108 is respectively arranged in the sliding sleeve 109 in a penetrating manner in a vertically slidable manner.
Specifically, the test device further comprises a mounting bracket 110, the upper end of the mounting bracket 110 is connected with the lower press plate 103 in a left-right sliding manner, and the test probes 104 are arranged at the lower end of the mounting bracket 110.
Specifically, the device further includes a slider (not shown), a sliding groove 1031 extending in the length direction is recessed in an upper end wall of the lower pressing plate 103, the slider is respectively slidably disposed in the sliding groove 1031, an upper end portion of the mounting bracket 110 is respectively fixedly connected with the upper end portion of the slider, and the mounting bracket 110 is respectively slidably connected with the lower pressing plate 103 through the slider and the sliding groove 1031.
Specifically, the bottom of the test probe 104 is provided with a sawtooth-shaped protruding strip 1041, which plays a role of anti-slip.
Specifically, a supporting leg 111 is protruded from each of four bottom corners of the fixing base plate 101.
Specifically, the utility model discloses a cylinder setting is in the top of PMKD, the holding down plate is connected with the cylinder pole fixed connection of cylinder, and along with the cylinder pole up-and-down motion of cylinder, the upper end of test probe respectively with the holding down plate side-to-side sliding connection, the locating plate sets up on the up end of PMKD, the up end of locating plate is respectively the spaced constant head tank that has two accomodations square lithium cell of concave, the test probe is vertical parallel setting respectively in the top of constant head tank, and the test probe can be connected with the positive plate and the negative pole piece butt electricity of square lithium cell respectively, the test probe is connected with corresponding data detection instrument, thereby detect internal resistance and the voltage value of battery; during specific test, at first in putting into the constant head tank through waiting to detect the battery, through cylinder drive test probe downstream, until being connected with the positive plate and the negative pole piece butt electricity of battery, compress tightly the battery through the test probe and fix in the constant head tank, it is not hard up to avoid the battery to appear the displacement in the test, thereby effectively reduce measuring error, and can effectively avoid the scratch of adjusting positive plate and negative pole piece, but the position horizontal slip of test probe adjusts, adaptability is wide, the efficiency of software testing and the precision of battery internal resistance and voltage have effectively been improved, and easy operation, high durability and convenient use, therefore, the clothes hanger is strong in practicability.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (7)
1. The device for detecting the voltage and the internal resistance of the battery is characterized by comprising a fixed base plate, a cylinder, a lower pressing plate, a test probe and a positioning plate, wherein the cylinder is arranged above the fixed base plate, the lower pressing plate is fixedly connected with a cylinder rod of the cylinder and moves up and down along with the cylinder rod of the cylinder, the upper end part of the test probe is respectively connected with the lower pressing plate in a left-right sliding mode, the positioning plate is arranged on the upper end face of the fixed base plate, two positioning grooves capable of accommodating square lithium batteries are respectively arranged on the upper end face of the positioning plate in a concave mode at intervals, the test probe is respectively vertically arranged above the positioning grooves in parallel, and the lower end part of the test probe can be respectively abutted and electrically connected with a positive plate and a negative plate on the upper end part of the square lithium batteries.
2. The device for detecting the voltage and the internal resistance of the battery as claimed in claim 1, further comprising a cylinder support plate and a cylinder mounting plate, wherein the cylinder support plate is respectively vertically and parallelly arranged on two sides of the rear end portion of the fixing bottom plate, two ends of the cylinder mounting plate are respectively fixedly connected with the upper end portion of the cylinder support plate, the cylinder is arranged on the upper end surface of the cylinder mounting plate, and the lower pressing plate is arranged below the cylinder mounting plate in a vertically sliding manner.
3. The device for detecting the internal resistance and voltage of a battery according to claim 2, further comprising a guide post and a sliding sleeve, wherein the sliding sleeve is respectively embedded in two sides of the cylinder mounting plate, the lower end of the guide post is respectively fixed on two sides of the upper end wall of the lower pressing plate, and the upper end of the guide post is respectively slidably arranged in the sliding sleeve in an up-and-down manner.
4. The device for detecting the voltage and the internal resistance of the battery as claimed in claim 1, further comprising mounting brackets, wherein the upper end portions of the mounting brackets are respectively connected with the lower pressing plate in a left-right sliding manner, and the test probes are respectively arranged at the lower end portions of the mounting brackets.
5. The device for detecting the internal resistance of the battery to voltage according to claim 4, further comprising a sliding block, wherein a sliding groove extending along the length direction is concavely formed on the upper end wall of the lower pressing plate, the sliding blocks are respectively slidably disposed in the sliding grooves, the upper end portions of the mounting brackets are respectively fixedly connected with the upper end portions of the sliding blocks, and the mounting brackets are respectively slidably connected with the lower pressing plate through the sliding blocks and the sliding grooves.
6. The device for detecting the voltage and the internal resistance of a battery as claimed in claim 1, wherein the bottom of the test probe is provided with a sawtooth-shaped convex strip respectively.
7. The device for detecting the voltage and the internal resistance of a battery as claimed in claim 1, wherein a supporting leg is convexly provided at each of four bottom corners of the fixed bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539940.9U CN212008873U (en) | 2020-04-13 | 2020-04-13 | Device for detecting voltage and internal resistance of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539940.9U CN212008873U (en) | 2020-04-13 | 2020-04-13 | Device for detecting voltage and internal resistance of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212008873U true CN212008873U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020539940.9U Active CN212008873U (en) | 2020-04-13 | 2020-04-13 | Device for detecting voltage and internal resistance of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212008873U (en) |
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2020
- 2020-04-13 CN CN202020539940.9U patent/CN212008873U/en active Active
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