CN213843477U - Accurate detection probe and equipment for battery internal resistance - Google Patents
Accurate detection probe and equipment for battery internal resistance Download PDFInfo
- Publication number
- CN213843477U CN213843477U CN202022755501.4U CN202022755501U CN213843477U CN 213843477 U CN213843477 U CN 213843477U CN 202022755501 U CN202022755501 U CN 202022755501U CN 213843477 U CN213843477 U CN 213843477U
- Authority
- CN
- China
- Prior art keywords
- threaded
- section
- internal resistance
- nut
- guide rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses an accurate test probe and equipment of battery internal resistance, accurate test probe of battery internal resistance includes: the device comprises a threaded copper guide rod, a copper nut, a spring, a fixed sleeve and a limiting piece; the threaded copper guide rod sequentially comprises a limiting section, a transition section, a first threaded section and a bearing section along the axis direction of the threaded copper guide rod; the outer diameter of the bearing section is larger than that of the first threaded section; the copper nut is in threaded connection with the first threaded section so as to realize that the internal resistance detection line is clamped between the bearing section and the copper nut; the fixing sleeve and the spring are sequentially sleeved on the outer side of the threaded copper guide rod, the spring is arranged between the fixing sleeve and the copper nut, and the threaded copper guide rod is movably inserted into the fixing sleeve; the locating part is connected with the limiting section to realize that the threaded copper guide rod is hung on the fixed sleeve. The utility model discloses can improve the uniformity of product internal resistance, reduce the undulant big problem of numerical value that leads to because of the contact resistance who causes before improving, fundamentally improves the comprehensive properties that the battery used in groups.
Description
Technical Field
The utility model relates to a resistance detects technical field in the lead acid battery, indicates especially an accurate test probe and equipment of battery internal resistance.
Background
The lead-acid storage battery is a resource circulation type energy product which has high safety, stable electrical property, low manufacturing cost, wide application field and low cost and can be recycled. In the last decade, with the development of world energy economy and the increasing improvement of people's living standard, lead-acid storage batteries face a wide development space as a green industry without consuming earth resources.
In the production process of lead-acid storage batteries, particularly valve-regulated sealed lead-acid storage batteries, more and more customers pay more attention to the consistency of internal resistance, and the consistency is taken as an important part for measuring the performance of the batteries and has very important influence on the performance of the batteries. Under the condition of ensuring normal use, the internal resistance value of a batch of products is required to be within +/-15% by customers, and the internal resistance value of the batch of products is required to be within +/-10% by the customers for the control of the wind energy system. The detection of the internal resistance value is very strict. However, at present, many manufacturers adopt automatic machine-passing detection matched with a four-function detection machine, and the method has strong randomness and low accuracy, so that the performance of the battery pack is influenced.
Disclosure of Invention
The utility model aims at providing an accurate test probe and equipment of battery internal resistance, through the detection of this test probe, can improve the uniformity of product internal resistance, reduce the problem that the numerical value that leads to because of the contact resistance that causes before improving is undulant big, and then can solve the main problem that produced contact electrolysis existed in the battery internal resistance testing process, fundamentally improves the comprehensive properties that the battery used in groups.
The utility model provides a technical scheme as follows:
the utility model discloses an accurate test probe of battery internal resistance, include:
the device comprises a threaded copper guide rod, a copper nut, a spring, a fixed sleeve and a limiting piece;
the threaded copper guide rod sequentially comprises a limiting section, a transition section, a first threaded section and a bearing section along the axis direction of the threaded copper guide rod; the outer diameter of the bearing section is larger than that of the first threaded section;
the copper nut is in threaded connection with the first threaded section so that the internal resistance detection line is clamped between the bearing section and the copper nut;
the fixing sleeve and the spring are sequentially sleeved on the outer side of the threaded copper guide rod, the spring is arranged between the fixing sleeve and the copper nut, and the threaded copper guide rod is movably inserted into the fixing sleeve;
the limiting part is connected with the limiting section to realize that the threaded copper guide rod is hung on the fixed sleeve.
Preferably, a first nut is in threaded connection with the first threaded section, and the first nut is disposed between the spring and the copper nut.
Preferably, the limiting section is a second threaded section, and the limiting member is more than one second nut which is sequentially screwed with the second threaded section.
Preferably, the limiting section is a cylindrical section, and the limiting part is a bayonet; and a clamping groove is radially arranged at the end part of one side of the cylindrical section, which is far away from the transition section, and the clamping pin penetrates through the clamping groove along the radial direction.
Preferably, the end of the spring near one side of the copper nut extends to the first threaded section.
Preferably, the fixing sleeve comprises a plastic nut and a threaded plastic fixing block; the plastic nut and the threaded plastic fixing block are respectively provided with a guide rod channel corresponding to the threaded copper guide rod; the plastic nut is in threaded connection with the threaded plastic fixing block.
Preferably, the plastic nut sequentially comprises a large-diameter section and a small-diameter section along the axis direction of the plastic nut, and the outer diameter of the large-diameter section is larger than that of the small-diameter section; the small-diameter section is a third thread section; the threaded plastic fixing block is in threaded connection with the third threaded section, and the outer diameter of the threaded plastic fixing block is larger than that of the small-diameter section.
The utility model also discloses an accurate check out test set of battery internal resistance, include: the battery internal resistance precision detection probe comprises an insulating plate, a linear driving mechanism and any one of the battery internal resistance precision detection probes; the insulation board is equipped with the installation through-hole that is used for installing fixed sleeve, so that the accurate test probe of battery internal resistance install in the insulation board, the locating part and the internal resistance detection line branch of the accurate test probe of battery internal resistance locate the both sides of insulation board, sharp actuating mechanism with the insulation board is connected, in order to drive the insulation board drives the internal resistance detection line is close to or keeps away from the battery that awaits measuring.
Preferably, the deflection range of the internal resistance detection line is not more than 0.5 mm.
Preferably, the insulating plate is a PVC plate.
The utility model provides a pair of accurate test probe and equipment of battery internal resistance can bring following at least one beneficial effect:
1. the traditional internal resistance detection probe is connected with an internal resistance detection line at the upper part, the internal resistance detection probe with the structure generates large fluctuation of contact resistance values in the detection process, the detection probe changes the existing detection mode that the internal resistance detection line is connected at the upper part into the internal resistance detection line connected at the lower part, the problem of large numerical value fluctuation caused by the contact resistance before improvement (the internal resistance value fluctuates greatly when the whole storage battery is used, so that the process data is distorted) is reduced, the main problems of contact electrolysis generated in the internal resistance detection process of the storage battery can be solved, the comprehensive performance of the whole storage battery is fundamentally improved, and the consistency of the internal resistance values of the storage battery is fundamentally improved. Satisfy the fluctuation requirement of high-end customer and the product internal resistance scope of using in groups, just the utility model discloses compact structure, simple and easy operation, the practicality is strong.
2. The lower part crew cut (bearing section promptly) of screw thread copper guide arm is convenient for well with the terminal contact of battery, insert the lower part of screw thread copper guide arm with the internal resistance detection line, consolidate with the copper nut, the spring of installing can regard as the elasticity effect of this check out test set in-operation from top to bottom, improve the error allowed range of stroke between this check out test set and the battery, make the contact of this test probe and terminal be the flexible contact simultaneously, avoided the rigid contact of this check out test set operation from top to bottom and terminal to the impact of terminal and/or screw thread copper guide arm, avoid the internal resistance detection line to strike the probability that the in-process drops because of vibrations simultaneously at rigid contact, improved the utility model provides a security and reliability.
3. The nut is further arranged above the copper nut and used for reinforcing the copper nut, so that the compression and the limiting of the double nuts on the internal resistance detection line are realized, the phenomenon that the internal resistance detection line moves up and down along with the detection equipment is avoided, the fact that the reality and the scientificity of the internal resistance detection are influenced due to the fact that the internal resistance detection line is loosened is avoided, and the reality and the reliability of the internal resistance detection are guaranteed. More excellent, not only guaranteed through the plastic fixed sleeve that the screw thread copper guide arm is installed in the fastness and the linearity of insulation board, guaranteed the straightness nature of operation from top to bottom of screw thread copper guide arm simultaneously to guaranteed the good contact of screw thread copper guide arm and terminal, guaranteed the high detection efficiency of equipment.
Drawings
The above features, technical features, advantages and implementation manners of the probe and the device for accurately detecting the internal resistance of the battery will be further described in the following detailed description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the accurate detection probe for battery internal resistance of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic structural view of an embodiment of the threaded copper guide bar of the present invention;
fig. 4 is a schematic structural view of an embodiment of the threaded plastic fixing block of the present invention;
FIG. 5 is a schematic top view of the structure of FIG. 4;
FIG. 6 is a schematic cross-sectional view of FIG. 4;
fig. 7 is a diagram of fluctuation values of internal resistance detection data of a conventional internal resistance detection probe;
fig. 8 is a fluctuation value diagram of the internal resistance detection data of the present invention.
The reference numbers illustrate: 1-second nut, 2-threaded plastic fixing block, 3-plastic nut, 31-large diameter section, 32-small diameter section, 33-guide rod channel, 4-spring, 5-copper nut, 6-threaded copper guide rod, 61-limiting section, 62-transition section, 63-first thread section, 64-bearing section, 01-existing 1m omega upper limit line, 02-existing measured value line, 03-existing 1m omega lower limit line, 04-1m omega upper limit line, 05-measured value line and 06-1m omega lower limit line.
Detailed Description
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure of the product.
In an embodiment of the present invention, as shown in fig. 1 to 6, a probe for accurately detecting the internal resistance of a battery includes: a threaded copper guide rod 6, a copper nut 5, a spring 4, a fixed sleeve and a limiting piece; the threaded copper guide rod 6 sequentially comprises a limiting section 61, a transition section 62, a first threaded section 63 and a bearing section 64 along the axis direction; the outer diameter of the bearing section 64 is larger than that of the first threaded section 63; the copper nut 5 is in threaded connection with the first threaded section 63, so that the internal resistance detection line is clamped between the bearing section 64 and the copper nut 5; the fixed sleeve and the spring 4 are sequentially sleeved outside the threaded copper guide rod 6, the spring 4 is arranged between the fixed sleeve and the copper nut 5, and the threaded copper guide rod 6 is movably inserted in the fixed sleeve; the limiting piece is connected with the limiting section 61 to realize that the threaded copper guide rod 6 is hung on the fixing sleeve.
In practical application, each part of the detection probe can be designed and manufactured according to the detection equipment installed on the detection probe, firstly, the threaded copper guide rod 6, the spring 4, the fixed sleeve and the limiting part are manufactured according to the structure on the detection equipment, the utility model discloses the internal resistance detection line on the original detection equipment is accessed from the upper part of the threaded copper guide rod 6, the access from the lower part of the threaded copper guide rod 6 is changed, the fluctuation of the contact internal resistance generated by the detection equipment in the operation process is reduced, the comprehensive performance of the whole group of storage batteries is fundamentally improved, and the consistency of the internal resistance of the storage batteries is fundamentally improved; the fluctuation requirement of the internal resistance range of products used in groups and high-end customers is met.
Preferably, a first nut is further included, which is in threaded connection with the first threaded section 63 and is disposed between the spring 4 and the copper nut 5. In practical applications, the first nut may be a general nut, such as a steel nut, a ferrous nut, etc.
Preferably, the limiting section 61 is a second threaded section, and the limiting member is more than one second nut 1 which is sequentially screwed with the second threaded section. In practical applications, the second nut 1 may be a general nut, such as a copper nut, an iron nut, or the like. Connect in the second screw thread section through 1 spiro union of second nut to make the spacing section 61 of screw thread copper guide arm 6 pass through 1 butt of second nut in fixed sleeve's upper end, thereby screw thread copper guide arm 6 can not drop from fixed sleeve, and screw thread copper guide arm 6 can not drop from the insulation board for the in-process that spring 4 takes place to deform.
Preferably, the end of the spring 4 on the side close to the copper nut 5 extends to the first threaded section 63, and when the spring 4 is in the extended state, the end of the spring 4 on the side close to the fixed sleeve extends to the second threaded section. Of course, in another embodiment of the present invention, when the spring 4 is in the extended state, the end of the spring 4 near the side of the fixed sleeve does not extend to the second thread section. Preferably, the spring 4 is in a pre-stressed state after the inspection probe is assembled, i.e. the spring 4 is in a compressed state.
Preferably, the fixed sleeve comprises a plastic nut 3 and a threaded plastic fixed block 2; the plastic nut 3 and the threaded plastic fixing block 2 are respectively provided with a guide rod channel 33 corresponding to the threaded copper guide rod 6; the plastic nut 3 is screwed with the threaded plastic fixing block 2. In practical applications, the fixing sleeve may be sleeved on the transition section 62 or the limiting section 61. Due to the elastic deformation performance of the plastic fixing sleeve, the error allowance of the assembly of the threaded copper guide rod 6 and the fixing sleeve is increased, and meanwhile, the installation allowance of the detection probe installed on the detection equipment is also increased. It should be noted that, in another embodiment of the present invention, the fixing sleeve may also be made of other materials, such as a steel fixing sleeve or an iron fixing sleeve. The mounting error allowance of the detection probe mounted on the detection equipment is improved in a threaded connection mode, so that the detection probe is mounted on the insulation plates with different thicknesses.
Preferably, the plastic nut 3 sequentially comprises a large-diameter section 31 and a small-diameter section 32 along the axis direction thereof, and the outer diameter of the large-diameter section 31 is larger than that of the small-diameter section 32; the small diameter section 32 is a third thread section; the threaded plastic fixing block 2 is in threaded connection with the third threaded section, and the outer diameter of the threaded plastic fixing block 2 is larger than that of the small-diameter section 32. In practical application, the small-diameter section 32 penetrates through the insulating plate, the surface of the large-diameter section 31 close to one side of the insulating plate abuts against the insulating plate, the surface of the threaded plastic fixing block 2 close to one side of the insulating plate abuts against the insulating plate, and the fixing sleeve is installed on the insulating plate in an up-and-down clamping mode, so that the detection probe is installed on the insulating plate, the linearity of the threaded copper guide rod 6 in up-and-down reciprocating motion relative to the insulating plate is guaranteed, in addition, the insulating plate is driven by the linear driving mechanism, the linearity of the threaded copper guide rod 6 in linear motion along with the insulating plate under the driving of the linear driving mechanism is guaranteed, and the contact between the threaded copper guide rod 6 and a terminal and the small fluctuation range of internal resistance detection are guaranteed. Of course, in another embodiment of the present invention, the fixing sleeve can also be installed on the insulating plate in a straight tube state structure by a close-fitting manner.
In another embodiment of the present invention, different from the above embodiments, the limiting section 61 of the present embodiment is a cylindrical section, and the limiting member is a bayonet; the end part of the cylindrical section far away from one side of the transition section 62 is radially provided with a clamping groove, and the clamping pin penetrates through the clamping groove along the radial direction. In another embodiment of the present invention, the cylindrical section may be replaced by regular or irregular polygons, such as a square, but the present invention is also within the protection scope.
The utility model also discloses an accurate check out test set of battery internal resistance, include: the device comprises an insulating plate, a linear driving mechanism and any one of the accurate detection probes for the internal resistance of the battery; the insulation board is provided with an installation through hole for installing the fixing sleeve, so that the battery internal resistance accurate detection probe is installed on the insulation board, the limiting part and the internal resistance detection line of the battery internal resistance accurate detection probe are respectively arranged on two sides of the insulation board, and the linear driving mechanism is connected with the insulation board to drive the internal resistance detection line to be close to or far away from the battery to be detected.
For example, as shown in fig. 7, in order to obtain a fluctuation map of internal resistance detection data of the conventional internal resistance detection probe, the conventional measured value line 02 greatly fluctuates between the conventional 1m Ω upper limit line 01 and the conventional 1m Ω lower limit line 03, and is very unstable. And as shown in fig. 8, for the utility model discloses a measuring probe's internal resistance detects data fluctuation value picture, and the fluctuation of measured value line 05 between 1m omega upper limit line 04 and 1m omega lower limit line 06 is less, and is very stable, and is visible the utility model discloses fundamentally has improved the uniformity that the internal resistance value of battery detected, satisfies the undulant requirement of high-end customer and the product internal resistance scope of using in groups.
Preferably, the deflection range of the internal resistance detection line is not more than 0.5 mm. Namely, the deflection range of the internal resistance detection wire wound around the fixed sleeve is not more than 0.5 mm.
Preferably, the insulating plate is a PVC plate.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an accurate test probe of battery internal resistance which characterized in that includes:
the device comprises a threaded copper guide rod, a copper nut, a spring, a fixed sleeve and a limiting piece;
the threaded copper guide rod sequentially comprises a limiting section, a transition section, a first threaded section and a bearing section along the axis direction of the threaded copper guide rod; the outer diameter of the bearing section is larger than that of the first threaded section;
the copper nut is in threaded connection with the first threaded section so that the internal resistance detection line is clamped between the bearing section and the copper nut;
the fixing sleeve and the spring are sequentially sleeved on the outer side of the threaded copper guide rod, the spring is arranged between the fixing sleeve and the copper nut, and the threaded copper guide rod is movably inserted into the fixing sleeve;
the limiting part is connected with the limiting section to realize that the threaded copper guide rod is hung on the fixed sleeve.
2. The accurate detection probe of battery internal resistance of claim 1, characterized by further comprising:
the first nut is in threaded connection with the first threaded section, and the first nut is arranged between the spring and the copper nut.
3. The accurate detection probe of battery internal resistance of claim 1, characterized in that:
the limiting part is a second threaded section, and the limiting part is more than one second nut which is sequentially in threaded connection with the second threaded section.
4. The accurate detection probe of battery internal resistance of claim 1, characterized in that:
the limiting section is a cylindrical section, and the limiting part is a bayonet lock; and a clamping groove is radially arranged at the end part of one side of the cylindrical section, which is far away from the transition section, and the clamping pin penetrates through the clamping groove along the radial direction.
5. The accurate detection probe of battery internal resistance of claim 1, characterized in that:
the end part of the spring, which is close to one side of the copper nut, extends to the first thread section.
6. The accurate detection probe of battery internal resistance according to any one of claims 1-5, characterized in that:
the fixed sleeve comprises a plastic nut and a threaded plastic fixed block; the plastic nut and the threaded plastic fixing block are respectively provided with a guide rod channel corresponding to the threaded copper guide rod; the plastic nut is in threaded connection with the threaded plastic fixing block.
7. The accurate detection probe of battery internal resistance of claim 6, characterized in that:
the plastic nut sequentially comprises a large-diameter section and a small-diameter section along the axis direction of the plastic nut, and the outer diameter of the large-diameter section is larger than that of the small-diameter section; the small-diameter section is a third thread section; the threaded plastic fixing block is in threaded connection with the third threaded section, and the outer diameter of the threaded plastic fixing block is larger than that of the small-diameter section.
8. The utility model provides an accurate check out test set of battery internal resistance which characterized in that includes: an insulating plate, a linear driving mechanism and the accurate detection probe for the internal resistance of the battery of any one of the claims 1 to 7; the insulation board is equipped with the installation through-hole that is used for installing fixed sleeve, so that the accurate test probe of battery internal resistance install in the insulation board, the locating part and the internal resistance detection line branch of the accurate test probe of battery internal resistance locate the both sides of insulation board, sharp actuating mechanism with the insulation board is connected, in order to drive the insulation board drives the internal resistance detection line is close to or keeps away from the battery that awaits measuring.
9. The accurate detection equipment of battery internal resistance according to claim 8, characterized in that:
the deflection range of the internal resistance detection line is not more than 0.5 mm.
10. The accurate detection apparatus of battery internal resistance according to claim 8 or 9, characterized in that:
the insulating plate is a PVC plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022755501.4U CN213843477U (en) | 2020-11-25 | 2020-11-25 | Accurate detection probe and equipment for battery internal resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022755501.4U CN213843477U (en) | 2020-11-25 | 2020-11-25 | Accurate detection probe and equipment for battery internal resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213843477U true CN213843477U (en) | 2021-07-30 |
Family
ID=76990897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022755501.4U Active CN213843477U (en) | 2020-11-25 | 2020-11-25 | Accurate detection probe and equipment for battery internal resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213843477U (en) |
-
2020
- 2020-11-25 CN CN202022755501.4U patent/CN213843477U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101051054A (en) | Device and method for detecting heavy gas flow speed value of gas relay | |
| CN213843477U (en) | Accurate detection probe and equipment for battery internal resistance | |
| CN201277965Y (en) | Novel experiment apparatus for unsusceptibility to fishscaling of enameled pressed steel | |
| CN204287256U (en) | A kind of many spring-piece types probe assembly | |
| CN218238606U (en) | Verticality form and position tolerance measuring device for large parts | |
| CN105973548A (en) | Water vapor transmittance testing clamp based on active metal electrical method | |
| CN203024670U (en) | Automobile left front column reinforcing plate detection upright column | |
| CN205720309U (en) | A kind of ultracapacitor detection fixture | |
| CN209167509U (en) | A kind of battery mass test device | |
| CN212872862U (en) | Magnetic ring performance detection equipment with double-sensor structure | |
| CN213813708U (en) | A whole stamping forming shell fragment probe for test fixture | |
| CN212779058U (en) | Device for detecting parallel error of opposite end faces of wind power bearing channel | |
| CN218211958U (en) | Comprehensive detection device for lifting table legs | |
| CN215005507U (en) | Cylinder type lithium battery detection tool | |
| CN206192317U (en) | Comprises a workbench, | |
| CN217764771U (en) | Experimental sample thickness detection structure of low-temperature impact testing machine | |
| CN209181754U (en) | A kind of total high detection tooling of cylindrical electrical core | |
| CN219996752U (en) | Furniture board pressure testing machine | |
| CN212031627U (en) | ICT test fixture | |
| CN220961579U (en) | Piezoresistor electrical property test fixture | |
| CN215575467U (en) | Glass fiber product insulating property detection device | |
| CN219417602U (en) | Surface resistance detection device of battery pole piece | |
| CN219736176U (en) | Cylinder chute position gauge | |
| CN211262033U (en) | Quick electronic product leading-out terminal inspection tool | |
| CN219715311U (en) | Miniature in-situ stretching-electrochemical coupling testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |