CN209878962U - Probe set for lithium battery detection - Google Patents
Probe set for lithium battery detection Download PDFInfo
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- CN209878962U CN209878962U CN201920544393.0U CN201920544393U CN209878962U CN 209878962 U CN209878962 U CN 209878962U CN 201920544393 U CN201920544393 U CN 201920544393U CN 209878962 U CN209878962 U CN 209878962U
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Abstract
The utility model belongs to the technical field of lithium cell detection equipment, the utility model discloses a probe group for lithium cell detection, it includes five electric current needles, a voltage needle and probe group fixed part, electric current needle and voltage needle all include with the syringe needle and the needle bar of the lithium cell contact that awaits measuring, the syringe needle cup joints in the outside of needle bar, the lateral surface of needle bar is provided with the hemisphere that is inconsistent with the internal surface of syringe needle protrudingly, the probe group fixed part is including the hexagonal terminal surface, joint interface part and the screw thread interface part that connect gradually, it is protruding to be provided with a plurality of profile of tooth on the side of the lithium cell one side that awaits. The utility model discloses a probe group can be applicable to the detection of different contact surface's lithium cell, just the utility model discloses a probe group is difficult not hard up taking place with being connected of check out test set stably. Utilize the utility model discloses a probe group's electric current needle and voltage needle can not produce when the syringe needle is flexible and rock relatively between the needle bar, ensure that check out test set has stable working property.
Description
Technical Field
The utility model relates to a lithium cell detection equipment technical field, concretely relates to a probe group for lithium cell detects.
Background
Lithium batteries have the advantages of high capacity, small size, light weight, and the like, and thus are widely used in various industries and products such as mobile phones, notebook computers, electric tools, electric vehicles, small household appliances, and the like. In the production and processing process of the lithium battery, lithium battery detection equipment is required to be used for detecting the electrical properties of the lithium battery, such as charging and discharging. The detection is mainly carried out after the probe group is contacted with the lithium battery in the equipment for detecting the performance of the lithium battery.
However, the existing probe set for the lithium battery detection device has the following problems: firstly, as the application of lithium batteries is more and more extensive, the shapes of the lithium batteries are various, so that the probes of the probe set of the existing detection equipment can not be in full contact with the lithium batteries, and the detection effect is influenced; secondly, the probe set of the existing detection equipment is easy to loosen when being connected with the detection equipment by adopting a pure thread, so that the fixing effect is poor; the third is in order to ensure that the probe group has certain flexible stroke when examining, the needle axle and the syringe needle of the probe of present probe group that is used for the lithium cell to detect are as an organic whole, through cup jointing the needle cover outside the needle axle to set up the spring and make the syringe needle have certain flexible stroke in the needle cover, this kind of structure makes the needle axle easily take place to rock in the needle cover or the frictional force between needle axle and needle cover is great, causes the syringe needle to stretch out and draw back unsmoothly.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide a probe group for lithium battery detection, which is suitable for the detection of lithium batteries with irregular contact surfaces and is convenient to connect with detection equipment, and can ensure the smooth telescopic process of the needle head of the probe.
The utility model provides a probe group for lithium battery detection, which comprises five current needles, a voltage needle and a probe group fixing part, wherein the current needles are distributed in a regular pentagon shape, the current needles are respectively arranged at five vertexes of the regular pentagon shape, the voltage needle is arranged at the center of the regular pentagon shape where the current needles are arranged, the current needles and the voltage needle respectively comprise a needle rod and a needle head contacted with a lithium battery to be detected, the needle head is sleeved outside one end part of the needle rod, the outer side wall of the needle rod is propped against the inner side wall of the needle head, the needle head can move relative to the needle rod along the axial direction of the needle rod, a plurality of tooth-shaped bulges are arranged on the side surface of the needle head close to one side of the lithium battery to be detected, the needle rods of the current needles and the voltage needle vertically pass through the probe group fixing part and are, keeping away from of current needle and voltage needle's needle bar the one end of syringe needle is the needle bar afterbody, the needle bar afterbody is located one side of probe set fixed part, the syringe needle is located the opposite side of probe set fixed part, the probe set fixed part is being close to needle bar afterbody one side of current needle and voltage needle is provided with joint interface part and screw thread interface part. Through set up a plurality of profile of tooth protrudingly on the syringe needle and make the utility model discloses a probe group can be applicable to the detection of different contact surface's lithium cell, just the utility model discloses a probe group has joint interface and hickey simultaneously for probe group is difficult for taking place not hard up with being connected of check out test set stably. The utility model discloses a probe group's electric current needle and voltage needle cup joint the syringe needle in the needle bar outside and the needle bar inconsistent with the syringe needle can prevent to produce when the syringe needle is flexible and rock relatively between the needle bar.
Furthermore, a plurality of hemispherical bulges which are contacted with the inner surface of the needle head are arranged on the outer side surface of the needle rod sleeved with the needle head. Therefore, when the needle head is extended and retracted back and forth along the needle rod, the hemispherical protrusion can reduce the friction force between the needle head and the needle rod, so that the extension and retraction process of the needle head is smooth.
Further, the utility model discloses a probe set for lithium cell detection the probe set fixed part is including the hexagonal terminal surface, joint interface part and the screw thread interface part that connect gradually, the vertical axis of hexagonal terminal surface, joint interface part and screw thread interface part is located same straight line, the hexagonal terminal surface is located and is close to syringe needle one side of electric current needle and voltage needle, the screw thread interface part is located and is close to needle bar afterbody one side of electric current needle and voltage needle, the external diameter size of hexagonal terminal surface is greater than the external diameter size of joint interface part, the external diameter size of joint interface part is greater than the external diameter size of screw thread interface part. Therefore will the utility model discloses a probe group is at first fixed with check out test set through the screw thread interface part rather than being connected the back joint interface part that targets in place and further die with the check out test set card, has realized probe group and check out test set's firm connection, and difficult emergence is not hard up.
Furthermore, the joint interface part is cylindric, along the circumference direction of the side of joint interface part evenly is provided with two at least elastic block tongues that have, the block tongue has from being close to the screw thread interface part is to keeping away from the direction of screw thread interface part and towards keeping away from the inclined plane of the vertical axis direction slope of joint interface part. Therefore, the clamping interface part can be quickly inserted into the matched detection equipment through the clamping tongue.
Furthermore, the hexagonal end face, the clamping interface part and the thread interface part are separated or integrated.
Furthermore, springs are sleeved outside the needle rods of the current needle and the voltage needle, two ends of each spring are respectively connected with the needle heads and the hexagonal end faces of the current needle and the voltage needle, and the compression stroke of each spring is not less than 8 mm. Set up the spring in the middle of syringe needle and hexagonal terminal surface and make the syringe needle when the pressurized is close to the hexagonal terminal surface, the spring applys reverse elasticity to the syringe needle, therefore the syringe needle can be inseparable with the lithium cell contact that awaits measuring, ensures that detection effect is accurate.
Furthermore, the side of the hexagonal end face close to one side of the needle heads of the current needle and the voltage needle is fixedly provided with a metal sleeve for the current needle and the voltage needle to penetrate through, the surface of the metal sleeve is coated with a nickel layer, the two ends of a spring sleeved outside the needle rods of the voltage needle and the current needle are respectively connected with the needle heads of the current needle and the voltage needle and the metal sleeve, and the distance between the needle heads of the current needle and the voltage needle and the metal sleeve correspondingly arranged on the needle heads of the current needle and the voltage needle is not more than the length of the spring when the spring is relaxed. The metal sleeve that the coating has the nickel layer has better mechanical strength, reduces the spring to the wearing and tearing of hexagonal terminal surface, has prolonged the utility model discloses a life of probe group.
Furthermore, a guide sleeve is arranged outside the spring, at least one part of the needle head is positioned inside the guide sleeve, the needle head can move along the inner side wall of the guide sleeve, and one end of the guide sleeve is fixedly connected with the metal sleeve. Through setting up the uide bushing, further prevent that the syringe needle from producing at flexible in-process and rocking, ensure more accurate testing result.
The utility model discloses a probe group for lithium cell detection the needle bar afterbody of voltage needle with the distance of probe group fixed part is greater than the needle bar afterbody of current needle with the distance of probe group fixed part. Thus, the current pin and the voltage pin can be prevented from interfering with each other when the wires of the inspection apparatus are soldered.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic distribution diagram of current pins and voltage pins according to a first embodiment of the present invention;
fig. 3 is a schematic view of the connection relationship between the guide sleeve and the needle, needle rod and metal sleeve of the second embodiment of the present invention.
In the figure:
the probe comprises a 1-current needle, a 2-voltage needle, a 3-probe set fixing part, a 31-hexagonal end face, a 32-clamping connecting part, a 321-clamping tongue, a 33-thread connecting part, a 4-needle head, a 41-tooth-shaped protrusion, a 5-needle rod, a 51-hemispherical protrusion, a 52-needle rod tail part, a 6-spring, a 7-metal sleeve and an 8-guide sleeve.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
The first embodiment is as follows:
as shown in fig. 1, the probe set for lithium battery detection of this embodiment includes five current needles 1, a voltage needle 2 and probe set fixed part 3, current needle 1 and voltage needle 2 all include with the lithium cell contact's that awaits measuring syringe needle 4 and needle bar 5, syringe needle 4 cup joints in the outside of needle bar 5, the lateral surface of needle bar 5 is provided with the hemisphere protruding 51 inconsistent with the internal surface of syringe needle 4, the lower limb of syringe needle 4 is connected with spring 6, spring 6's compression stroke is not less than 8mm, elasticity is 3500 ± 20% g when wholly pushing down 5 mm. The syringe needle 4 can remove along the relative needle bar 5 of the axial direction of needle bar 5 under the effect of spring 6, makes the utility model discloses a probe group can have good contact force to the lithium cell, ensures better detection effect. The upper end of syringe needle 4 be with the lithium cell contact one end that awaits measuring, be provided with a plurality of profile of tooth protrudingly 41 on the upper surface of the upper end of syringe needle 4, therefore the utility model discloses a probe group can be applicable to the detection of the contact surface's of difference battery. The needle rods 5 of the current needle 1 and the voltage needle 2 vertically penetrate through the probe set fixing part 3, the lower ends of the needle rods 5 of the current needle 1 and the voltage needle 2 are needle rod tail parts 52, the needle rod tail parts 52 are fixed below the probe set fixing part 3, and the needle heads are positioned above the probe set fixing part 3. The utility model discloses a voltage needle 2 establishes ties with a current needle 1 to make it lose test voltage's function in case single voltage needle damages.
As shown in fig. 2, the utility model discloses a current needle 1 is regular pentagon and distributes, five current needles 1 set up respectively in five summits of regular pentagon, voltage needle 2 sets up in the center department of the regular pentagon at current needle 1 place, the distance of the needle bar afterbody 52 of voltage needle 2 and probe set fixed part 3 is greater than the distance of the needle bar afterbody 52 of current needle 1 and probe set fixed part 3, therefore the needle bar afterbody 52 and the wire welding of being convenient for, prevent that the needle bar afterbody 52 of voltage needle 2 and current needle 1 from interfering with each other when the wire welds.
The utility model discloses a probe set fixed part 3 includes hexagonal end face 31, joint interface part 32 and the screw thread interface part 33 that from the top down set gradually, and the vertical axis of hexagonal end face 31, joint interface part 32 and screw thread interface part 33 is located same straight line, and hexagonal end face 31 is a regular hexagon's plate-type, and corresponding being provided with in hexagonal end face 31, joint interface part 32 and screw thread interface part 33 is used for the through-hole that the needle bar of electric current needle 1 and voltage needle 2 passed. The external diameter size of hexagonal terminal surface 31 is greater than the external diameter size of joint interface part 32, and the external diameter size of joint interface part 32 is greater than the external diameter size of screw thread interface part 33, can be with through joint interface part 32 and screw thread interface part 33 the utility model discloses a detection probe group is stable and convenient be connected with the check out test set of lithium cell. The utility model discloses a hexagonal terminal surface 31, joint interface part 32 and the screw thread interface part 33 of probe group fixed part 3 for lithium cell detection are plastics components of a whole that can function independently or an organic whole, and as an preferred embodiment, the material preparation that has flame retardant property that nylon and glass fiber mix is selected for use to probe group fixed part 3.
The utility model discloses a joint interface part 32 is cylindric, evenly is provided with two at least elastic block tongues 321 that have along the circumference direction of the side of joint interface part 32, and block tongues 321 has from upwards and the inclined plane of the vertical axis direction slope of keeping away from joint interface part 32 towards down, therefore is convenient for with the utility model discloses a probe group inserts check out test set and is connected with it.
The fixed metal sleeve 7 that is used for electric current needle 1 and voltage needle 2 to pass that is provided with in the side of the 4 one sides of syringe needle that is close to electric current needle 1 and voltage needle 2 of hexagonal terminal surface 31, the surface coating of metal sleeve 7 has the nickel layer, cup joint the both ends of the outside spring 6 of the needle bar 5 of voltage needle 1 and electric current needle 2 and be connected with the syringe needle 4 and the metal sleeve 7 of electric current needle 1 and voltage needle 2 respectively, the syringe needle 4 of electric current needle 1 and voltage needle 2 and the distance between the metal sleeve 7 that corresponds rather than be greater than spring 6 are being in the length when relaxing, being utilized the utility model discloses a probe group carries out lithium cell detection time measuring, contacts and compresses tightly the protruding 41 of profile of tooth of syringe needle 4 with the lithium cell, and spring 6 makes the utility model discloses a probe group is tighter with the lithium cell contact, ensures that detection.
Example 2:
as shown in fig. 3, the present embodiment is different from embodiment 1 only in that a guide sleeve 8 is further disposed outside the spring 6, at least a portion of the needle 4 is located inside the guide sleeve 8, the needle 4 can move along the inner side wall of the guide sleeve 8, and one end of the guide sleeve 8 is fixedly connected to the metal sleeve 7, so that the guide sleeve 8 can prevent the needle 4 from shaking left and right when the needle 4 moves up and down under the action of the spring 6.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (9)
1. A probe set for lithium battery detection comprises five current needles, a voltage needle and a probe set fixing part, and is characterized in that the current needles are distributed in a regular pentagon shape, the current needles are respectively arranged at five vertexes of the regular pentagon shape, the voltage needle is arranged at the center of the regular pentagon shape where the current needles are located, the current needles and the voltage needle respectively comprise needle rods and needle heads in contact with lithium batteries to be detected, the needle heads are sleeved outside one end part of the needle rods, the outer side walls of the needle rods are in contact with the inner side walls of the needle heads, the needle heads can move relative to the needle rods along the axial direction of the needle rods, a plurality of tooth-shaped protrusions are arranged on the side surfaces of the needle heads, which are close to one side of the lithium batteries to be detected, the needle rods of the current needles and the voltage needles vertically penetrate through the probe set fixing part and are fixedly connected with the probe set fixing part, and one ends of the needle rods of the current, the needle bar afterbody is located one side of probe set fixed part, the syringe needle is located the opposite side of probe set fixed part, the probe set fixed part is being close to needle bar afterbody one side of current needle and voltage needle is provided with joint interface part and screw thread interface part.
2. The probe set for lithium battery detection as claimed in claim 1, wherein a plurality of hemispherical protrusions contacting with the inner surface of the needle head are provided on the outer side surface of the needle rod sleeved with the needle head.
3. The probe set for detecting the lithium battery as claimed in claim 1, wherein the probe set fixing part comprises a hexagonal end face, a clamping interface part and a thread interface part which are connected in sequence, the longitudinal central axes of the hexagonal end face, the clamping interface part and the thread interface part are positioned on the same straight line, the hexagonal end face is positioned at one side of the needle head of the current needle and the needle head of the voltage needle, the thread interface part is positioned at one side of the tail part of the needle rod of the current needle and the needle rod of the voltage needle, the outer diameter of the hexagonal end face is greater than the outer diameter of the clamping interface part, and the outer diameter of the clamping interface part is greater than the outer diameter of the thread interface.
4. The probe set for lithium battery detection as claimed in claim 3, wherein the clamping interface part is cylindrical, and at least two elastic clamping tongues are uniformly arranged along the circumferential direction of the side surface of the clamping interface part, and each clamping tongue is provided with an inclined surface which is inclined from the direction close to the threaded interface part to the direction far away from the threaded interface part and towards the direction far away from the longitudinal central axis of the clamping interface part.
5. The probe set for lithium battery detection as claimed in claim 3, wherein the hexagonal end face, the clamping interface and the threaded interface are separate or integrated.
6. The probe set for detecting the lithium battery as claimed in claim 3, wherein springs are sleeved outside the needle rods of the current needle and the voltage needle, two ends of each spring are respectively connected with the needle heads and the hexagonal end faces of the current needle and the voltage needle, and the compression stroke of each spring is not less than 8 mm.
7. The probe set for lithium battery detection as claimed in claim 6, wherein a metal sleeve for passing the current pin and the voltage pin is fixedly arranged on the side surface of the hexagonal end surface close to the side of the needle heads of the current pin and the voltage pin, the surface of the metal sleeve is coated with a nickel layer, two ends of a spring sleeved outside the needle rods of the voltage pin and the current pin are respectively connected with the needle heads of the current pin and the voltage pin and the metal sleeve, and the distance between the needle heads of the current pin and the voltage pin and the metal sleeve correspondingly arranged is not more than the length of the spring when the spring is relaxed.
8. The probe set for lithium battery detection as claimed in claim 7, wherein a guide sleeve is further disposed outside the spring, at least a portion of the needle is located inside the guide sleeve, the needle is movable along an inner sidewall of the guide sleeve, and one end of the guide sleeve is fixedly connected to the metal sleeve.
9. The probe set for lithium battery detection as claimed in claim 1, wherein a distance between a needle bar tail of the voltage needle and the probe set fixing part is greater than a distance between a needle bar tail of the current needle and the probe set fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920544393.0U CN209878962U (en) | 2019-04-22 | 2019-04-22 | Probe set for lithium battery detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920544393.0U CN209878962U (en) | 2019-04-22 | 2019-04-22 | Probe set for lithium battery detection |
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| Publication Number | Publication Date |
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| CN209878962U true CN209878962U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920544393.0U Active CN209878962U (en) | 2019-04-22 | 2019-04-22 | Probe set for lithium battery detection |
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| CN (1) | CN209878962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735995A (en) * | 2020-05-29 | 2020-10-02 | 浙江杭可科技股份有限公司 | Independently-detachable test probe |
-
2019
- 2019-04-22 CN CN201920544393.0U patent/CN209878962U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735995A (en) * | 2020-05-29 | 2020-10-02 | 浙江杭可科技股份有限公司 | Independently-detachable test probe |
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