CN217901849U - Combined probe tool for testing cylindrical batteries on same side - Google Patents

Abstract

The utility model discloses a combination probe frock of test homonymy cylinder battery, including base, two negative pole probes and an anodal probe, two negative pole probe and an anodal probe all wear to locate along the direction of base center pin in the base, anodal probe set up in the center of base, two negative pole probes are arranged in the both sides of anodal probe, two all be provided with on negative pole probe and the anodal probe and prevent rotating-structure, seted up on the base three with prevent the through-hole that rotating-structure corresponds. The part of the positive and negative electrode probe rods close to the wiring end of the utility model adopts the D-shaped shaft with the same cross section as the base through hole, on one hand, the mutual rotation between the positive and negative electrode probe rods and the base can be prevented; on the other hand, the D-shaped through hole on the base plays a guiding role. In addition, the limiting step surfaces of the positive and negative probe rods play roles in positioning and limiting, and further movement of the positive and negative probe rods is limited, so that the positive and negative probes are positioned at a test position.

Description

Combined probe tool for testing cylindrical batteries on same side

Technical Field

The utility model belongs to the process equipment field, concretely relates to combination probe frock of test homonymy cylinder battery.

Background

At present, the high-current cylindrical battery is a tab on two sides, and battery probes are needed to be arranged on the two sides during testing, so that the battery is firmly clamped due to the large current ratio, and the clamping force is large. If fixed probe is taken to one end, and the spring probe is taken to the other end, and battery centre gripping dynamics is not enough, and probe contact position generates heat easily and influences the battery test result, if the spring probe is all adopted at both ends, and it is very inconvenient to operate, needs both ends all to use locking device (if press from both sides fast) for whole frock cost-push.

In view of the above disadvantages, new cylindrical jigs with the positive and negative electrodes on the same side are introduced in the market for testing the positive and negative electrodes of a battery on one side by using probes on the same side. Publication No. CN114509587A proposes a cylindrical battery combined probe, which comprises a probe base, a battery contact temperature probe, a negative electrode probe and a positive electrode probe. Battery contact temperature needle, negative pole probe and positive pole probe all wear to locate along probe base center pin direction in the probe base, wherein positive pole probe set up in the centre position of probe base, the negative pole probe with battery contact temperature needle branch list is in the both sides of positive pole probe, just battery contact temperature needle, negative pole probe and positive pole probe's test end all is located same one side of probe base. The scheme can be used for charging the novel cylindrical battery on the same side, but the scheme has the following problems that the structure of the base is complex, and the size of the negative probe is large, so that the measurement accuracy is not high; the elasticity of the temperature probe is different from that of the cathode probe, so that the whole device is unbalanced, and the stress is uneven, so that the device fails; in addition, the positive and negative probes are consistent in height, so that poor contact is easily caused to affect a test result.

In view of the above, it is necessary to provide a new technical solution to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is realized through the following technical scheme: the utility model provides a test combination probe frock of homonymy cylinder battery which characterized in that: including the base, two negative probes and an anodal probe, two negative probe and an anodal probe all wear to locate along the direction of base center pin in the base, anodal probe set up in the center of base, two negative probes are arranged in anodal probe's both sides, two all be provided with anti-rotating structure on negative probe and the anodal probe, seted up on the base three with the through-hole that anti-rotating structure corresponds.

Furthermore, the two negative electrode probes are the same in shape and size, and the length of the two negative electrode probes is larger than that of the positive electrode probe.

Further, the length difference between the negative electrode probe and the positive electrode probe is 2-3 mm.

Further, the negative pole probe includes negative pole probe pole, and it is the hollow tube, the negative pole probe pole includes the test end that links to each other with homonymy cylinder battery, the wiring end that links to each other with test equipment, still including being located the cross section between the two for the first interlude of circular shape negative pole probe pole and the negative pole probe pole second interlude of cross section for D shape, the first interlude of negative pole probe pole is close to the test end, negative pole probe pole second interlude is worn to locate in the through-hole, form the restriction between first interlude of negative pole probe pole and the negative pole probe pole second interlude the spacing step face of negative pole probe pole that the negative pole probe pole removed, rotation-proof structure includes negative pole probe pole second interlude.

Further, anodal probe includes anodal probe pole, and it is the hollow tube, anodal probe pole includes the test end that links to each other with homonymy cylinder battery, the wiring end that links to each other with test equipment, still including the cross section that is located between the two for the first interlude of circular shape anodal probe pole and cross section be the anodal probe pole second interlude of D shape, anodal probe pole first interlude is close to the test end, anodal probe pole second interlude wear to locate in the through-hole, form the restriction between anodal probe pole first interlude and the anodal probe pole second interlude anodal probe pole spacing step face that anodal probe pole removed, it still includes anodal probe pole second interlude to prevent rotating the structure.

Further, the diameter of the first middle section of the positive electrode probe rod is larger than that of the first middle section of the negative electrode probe rod.

Further, the base is the stairstepping, including being close to the first base of wiring end and being close to the second base of test end, the height that highly is greater than the second base of first base, correspond on the second base the tip of three through-hole is seted up three and is used for holding the processing hole of positive negative pole probe spring.

Further, the length of the first middle section of the negative electrode probe rod and the length of the first middle section of the positive electrode probe rod are both larger than the height of the second base.

Further, the size and the shape of the cross section of the three through holes on the first base correspond to the size and the shape of the cross section of the second middle section of the positive electrode probe rod and the second middle section of the negative electrode probe rod.

Further, the end parts of the positive probe voltage contact and the negative probe voltage contact are circular in shape, and a plurality of protruding sharp points are uniformly arranged along the circumference.

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

1. the part of the positive and negative probe rods close to the wiring end of the utility model adopts the D-shaped shaft with the same cross section as the base through hole, on one hand, the mutual rotation between the positive and negative probe rods and the base can be prevented; on the other hand, the D-shaped through hole on the base plays a role in guiding;

2. the limiting step surface of the positive and negative electrode probe rods of the utility model plays the roles of positioning and limiting, and limits the further movement of the positive and negative electrode probe rods, when the positive and negative electrode probe springs are compressed to make the end part of the D-shaped shaft contact with the limiting step surface, the positive and negative electrode probes are just in the testing position at the moment;

3. the utility model adopts two cathode probes with the same size and positioned at two sides and one anode probe positioned at the middle position, thereby ensuring the balance of the whole tool; in addition, the negative probes are slightly longer than the positive probes, so that the compression amount of all the probes is consistent, the cylindrical battery on the same side is ensured to be contacted with all the probes, and a more accurate test result is obtained;

4. the end parts of all the probe voltage contact heads of the utility model adopt a structure of adding a plurality of protruding sharp points in a circular shape, and under the condition that the outer diameter of the probe head is as large as the outer diameter of the probe head, the current contact area can be increased, so that the overcurrent capacity is larger, and the probe voltage contact heads are not easy to generate heat under the condition of passing through the current with the same size, so that the test result is more accurate;

5. the utility model discloses a base simple structure, through the guide effect of D shape through-hole, saved the setting of sliding sleeve among the contrast file, simplified the structure of base, reduced the construction degree of difficulty and manufacturing cost.

Drawings

Fig. 1 is a perspective view of the utility model in a natural state with a cylindrical battery on the same side;

fig. 2 is a perspective view of the utility model when the fixture and the cylindrical battery on the same side are in a test state;

FIG. 3 is a perspective view of the whole tool of the present invention;

fig. 4 is a bottom view of the tool base of the present invention;

FIG. 5 is a longitudinal cross-sectional view of FIG. 4;

fig. 6 is a front view of three probes of the present invention;

fig. 7 is a schematic view of a positive electrode probe of the tool of the present invention;

fig. 8 is a schematic view of a negative probe of the tool of the present invention;

fig. 9 is the utility model discloses the top view of positive negative pole probe rod test end of frock.

In the figure: 1-same-side cylindrical battery, 2-base, 2.1-first base, 2.2-second base, 2.3-first countersunk head fixing hole, 2.4-first through hole, 2.5-second through hole, 2.6-third through hole, 2.7-second countersunk head fixing hole, 3-negative probe, 3.1-negative probe voltage contact head, 3.2-negative probe current contact surface, 3.3-negative probe protection layer, 3.4-negative probe spring, 3.5-negative probe nut, 3.6-negative probe current terminal, 3.7-negative probe voltage terminal, 3.8-negative probe rod, 3.81-first middle section of negative probe rod, 3.82-second middle section of negative probe rod, 3.83-negative probe rod limit step surface, 3.9-first insulation layer, 4-positive probe middle section, 4.1-positive probe voltage contact head, 4.2-positive probe current probe surface, 4.2-positive probe surface, 4.83-negative probe rod limit step surface, 4.9-first insulation layer, 4.9-positive probe middle section, 4.1-positive probe voltage contact head, 4.2-positive probe surface, 4.2-positive probe terminal, 4.2-positive probe surface, 4.6-positive probe nut, 4.7-negative probe surface, 4.6 positive probe voltage terminal, 4.7-negative probe voltage terminal, 4.7-positive probe surface, 4.7-negative probe.

Detailed Description

The utility model provides a combination probe frock of test homonymy cylinder battery, as shown in fig. 1 ~ 9, including base 2, two negative pole probes 3 that the shape size is the same and a positive pole probe 4. Two negative pole probes 3 and positive pole probe 4 all wear to locate along the direction of base 2 center pin in the base 2. The positive probe 4 set up in the center of base 2, two negative pole probes 3 symmetrical arrangement in the both sides of positive probe 4, set up respectively on the base 2 and supply two negative pole probes 3 and a positive pole probe 4 to link up first through-hole 2.4, second through-hole 2.5 and third through-hole 2.6 of wearing to establish. And anti-rotation structures are arranged on the two negative probes 3 and the positive probe 4, and the shapes of the three through holes correspond to the shapes of the anti-rotation structures. The negative pole probe that adopts the symmetry to set up has improved the holistic stability of this probe frock on the one hand, and on the other hand has reduced the size of every negative pole probe, has increased its measuring degree of accuracy.

As shown in fig. 6, according to a preferred embodiment of the present invention, the two negative electrode probes 3 have the same shape and size, and the two negative electrode probes 3 and the positive electrode probe 4 have the same shape and structure, but the length of the negative electrode probe 3 is longer than that of the positive electrode probe 4, and the difference between the lengths is 3mm, but other values between 2 and 3mm may be used. In the embodiment, the compression amount of all the probes is consistent, so that the cylindrical battery on the same side can be in good contact with all the probes, and a more accurate test result is obtained.

As shown in fig. 8, the negative probe 3 includes a negative probe shaft 3.8, a first insulating layer 3.9, a negative probe voltage terminal 3.7, a negative probe current terminal 3.6, a negative probe nut 3.5, a negative probe spring 3.4, a negative probe protection layer 3.3, a negative probe current contact surface 3.2, and a negative probe voltage contact 3.1.

The negative pole probe 3 includes negative pole probe pole 3.8, and it is the hollow tube, negative pole probe pole 3.8 includes the test end that links to each other with homonymy cylinder battery 1, the wiring end that links to each other with test equipment, still including the cross section that is located between the two for the first interlude 3.81 of circular shape negative pole probe pole and the negative pole probe pole second interlude 3.82 of cross section for D shape, the first interlude 3.81 of negative pole probe pole is close to the test end, negative pole probe pole second interlude 3.82 wears to locate in the through-hole, form the restriction between the first interlude 3.81 of negative pole probe pole and the negative pole probe pole second interlude 3.82 the spacing step face 3.83 of negative pole probe pole that negative pole probe pole 3.8 removed, prevent that the rotating-structure includes negative pole probe pole second interlude 3.82.

In this embodiment, the D-shaped cross section refers to a major arc formed by a central angle greater than 180 degrees and a straight line connecting end points at two ends of the major arc, and the center of the major arc coincides with the center of the cross section of 3.81 in the first middle section of the negative probe rod. Therefore, the cathode probe rod is ensured to have certain strength, and a good anti-rotation effect is achieved.

The testing end of the negative probe rod 3.8 is provided with a negative probe current contact surface 3.2 and a negative probe voltage contact head 3.1 which are contacted with the cylindrical battery 1 on the same side, and the surface of the negative probe voltage contact head 3.1 exceeds the surface of the negative probe current contact surface 3.2.

The wiring end of the negative probe rod 3.8 is provided with the negative probe voltage terminal 3.7 and the negative probe current terminal 3.6, the negative probe current terminal 3.6 is electrically connected with the negative probe current contact surface 3.2 through the negative probe rod 3.8, the negative probe voltage terminal 3.7 is electrically connected with the negative probe voltage contact head 3.1, and the first insulating layer 3.9 is used for isolating the negative probe voltage terminal 3.7 from the negative probe current terminal 3.6.

The wiring end of the negative probe rod 3.8 is provided with external threads for mounting the negative probe nut 3.5 and fixing the negative probe current terminal 3.6.

The negative probe protection layer 3.3 is arranged at the testing end, the negative probe protection layer 3.3 is arranged around the negative probe current contact surface 3.2 and the negative probe voltage contact head 3.1 in a surrounding mode, and the negative probe voltage contact head 3.1 penetrates out of the end portion of the negative probe protection layer 3.3 and extends out of the end portion. And a gold plating layer is arranged outside the negative probe protection layer 3.3 to play a role in oxidation resistance.

As shown in fig. 7, the positive probe 4 includes a positive probe rod 4.8, a second insulating layer 4.9, a positive probe voltage terminal 4.7, a positive probe current terminal 4.6, a positive probe nut 4.5, a positive probe spring 4.4, a positive probe protective layer 4.3, a positive probe current contact surface 4.2, and a positive probe voltage contact head 4.1.

The positive pole probe 4 includes positive pole probe pole 4.8, and it is the hollow tube, positive pole probe pole 4.8 includes the test end that links to each other with homonymy cylinder battery 1, the wiring terminal that links to each other with test equipment, still including being located between the two cross section for the first interlude 4.81 of circular shape positive pole probe pole and cross section for the anodal probe pole second interlude 4.82 of D shape. Anodal probe pole first interlude 4.81 is close to the test end, anodal probe pole second interlude 4.82 wears to locate in the through-hole, form the restriction between anodal probe pole first interlude 4.81 and the anodal probe pole second interlude 4.82 anodal probe pole spacing step face 4.83 that anodal probe pole 4.8 removed, anti-rotation structure still includes anodal probe pole second interlude 4.82.

The testing end of the positive probe rod 4.8 is provided with a positive probe current contact surface 4.2 and a positive probe voltage contact head 4.1 which are contacted with the cylindrical battery 1 on the same side, and the surface of the positive probe voltage contact head 4.1 exceeds the surface of the positive probe current contact surface 4.2.

The wiring end of the positive probe rod 4.8 is provided with a positive probe voltage terminal 4.7 and a positive probe current terminal 4.6, the positive probe current terminal 4.6 is electrically connected with the positive probe current contact surface 4.2 through the positive probe rod 4.8, the positive probe voltage terminal 4.7 is electrically connected with the positive probe voltage contact head 4.1, and the second insulating layer 4.9 is used for isolating the positive probe voltage terminal 4.7 from the positive probe current terminal 4.6.

The wiring end of the positive probe rod 4.8 is provided with external threads which are used for installing the positive probe nut 4.5 and fixing the positive probe current terminal 4.6.

The positive probe protective layer 4.3 is arranged at the testing end, the positive probe protective layer 4.3 is arranged around the positive probe current contact surface 4.2 and the positive probe voltage contact head 4.1 in a surrounding mode, and the positive probe voltage contact head 4.1 penetrates out of the end portion of the positive probe protective layer 4.3 and extends out of the end portion.

As shown in fig. 7 to 9, the voltage contacts of all the positive and negative probes of this embodiment have circular end shapes, and eight protruding sharp points are uniformly arranged along the circumference, plus one sharp point at the center of the center, so that the whole structure is a nine-claw quincunx head. Other numbers may of course be used. Under the condition that the outer diameter of the probe head is the same as large, the current contact area of the probe head can be increased, so that the overcurrent capacity of the probe head is larger, the probe head is not easy to generate heat under the condition of passing through the current with the same size, and the test result is more accurate.

As shown in fig. 2 to 4, the base 2 is stepped, and includes a first base 2.1 close to the terminal of the negative probe rod 3.8 and a second base 2.2 close to the testing end thereof, and the two ends of the second base 2.2 are respectively provided with a first countersunk head fixing hole 2.3 and a second countersunk head fixing hole 2.7 for fixing the combined probe tool, and the first countersunk head fixing hole 2.3 and the second countersunk head fixing hole 2.7 are provided with matched countersunk head screws. The countersunk-head screws are mounted in both of the fixing holes before testing.

As shown in fig. 4 to 5, in the present embodiment, the cross-sectional shapes of the first through hole 2.4, the second through hole 2.5, and the third through hole 2.6 corresponding to the entire height direction of the first base 2.1 and a part of the second base 2.2 located above the first through hole are D-shaped. The cross-sectional dimensions and shapes of the three through holes correspond to the cross-sectional dimensions and shapes of the positive probe rod second middle section 4.82 and the negative probe rod second middle section 3.82. A certain axial gap is left between the two, so that the sliding up and down is convenient. By adopting the design of the D-shaped shaft and the through hole with the corresponding cross section, on one hand, the mutual rotation between the second middle section of the positive and negative probe rods and the base can be prevented; and on the other hand, the D-shaped through holes on the base play a role in guiding the positive and negative electrode probe rods.

As shown in fig. 4 to 5, the through hole is in the shape of a truncated cone at the upper half of the second base 2.2, the circle of the through hole on the surface of the second base 2.2 is larger than the circle of the through hole, and the circle of the through hole is larger than the circle corresponding to the major arc on the D-shaped through hole. The cone frustum is used for accommodating the positive and negative probe springs. The base 2 is made of an insulating material.

Fig. 1 is a state diagram when the probe is not in operation, and the positive and negative probe springs are in a natural state at the time. Fig. 2 is a diagram showing a test state, and referring to fig. 8, the positive and negative probe springs are in a compressed state. At the moment, the positive probe spring 3.4 is compressed to the position of the negative probe rod limiting step surface 3.83, and the smaller circular surface of the circular truncated cone is abutted to the negative probe rod limiting step surface 3.83. The limiting step surfaces of the positive and negative probe rods play roles in positioning and limiting, further movement of the positive and negative probe rods is limited, when the positive and negative probe springs are compressed to enable the end parts of the D-shaped shafts to contact the limiting step surfaces of the positive and negative probe rods, the positive and negative probes are just at the testing positions, and the state diagram is shown in figure 2.

As shown in fig. 2 to 8, the lengths of the first middle section 3.81 of the negative probe rod and the first middle section 4.81 of the positive probe rod are both greater than the height of the second base 2.2, so that a certain gap is left between the second base 2.2 and the protective layer of the positive probe and the negative probe under the test state.

As shown in fig. 1, 2 and 7, the radius of the corresponding circle of the major arc on the D-shaped shaft of the second middle section 4.82 of the positive probe rod is greater than the outer diameter of the external thread of the terminal, so that the positive probe nut 4.5 can be abutted against the end part of the D-shaped shaft, then the wiring copper nose corresponding to the positive probe current terminal 4.6 is put on the D-shaped shaft, and finally the nut with the same type as the positive probe nut 4.5 is sleeved on the external thread to fix the wiring copper nose.

As shown in fig. 6, the diameter of the first middle section 4.81 of the positive probe shaft is larger than the diameter of the first middle section 3.81 of the negative probe shaft, and the difference between the two is 2mm in this embodiment. The two negative probes are adopted, so that the size of each negative probe is reduced, and the measurement accuracy is improved.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a test combination probe frock of homonymy cylinder battery which characterized in that: including base (2), two negative pole probes (3) and an anodal probe (4), two negative pole probe (3) and an anodal probe (4) all wear to locate along the direction of base (2) center pin in base (2), anodal probe (4) set up in the center of base (2), two negative pole probes (3) are arranged in the both sides of anodal probe (4), two all be provided with on negative pole probe (3) and the anodal probe (4) and prevent rotating-structure, seted up on base (2) three with prevent rotating-structure's corresponding through-hole.

2. The combined probe tool for testing the cylindrical battery on the same side as the claim 1, wherein: the two negative electrode probes (3) are identical in shape and size, and the length of the two negative electrode probes is larger than that of the positive electrode probe (4).

3. The combined probe tool for testing the cylindrical battery on the same side as the claim 2, wherein: the length difference between the negative electrode probe (3) and the positive electrode probe (4) is 2-3 mm.

4. The combined probe tool for testing the cylindrical battery on the same side as the claim 3, wherein: negative pole probe (3) include negative pole probe pole (3.8), and it is the hollow tube, negative pole probe pole (3.8) include the test end that links to each other with homonymy cylinder battery (1), the terminal that links to each other with test equipment, still including being located the cross section between the two for circular shape negative pole probe pole first interlude (3.81) and cross section negative pole probe pole second interlude (3.82) for D shape, negative pole probe pole first interlude (3.81) are close to the test end, negative pole probe pole second interlude (3.82) are worn to locate in the through-hole, form the restriction between negative pole probe pole first interlude (3.81) and the negative pole probe pole second interlude (3.82) negative pole probe pole spacing step face (3.83) that negative pole probe pole (3.8) removed, anti-rotation structure includes negative pole probe pole second interlude (3.82).

5. The combined probe tool for testing the cylindrical batteries on the same side as in claim 4, wherein: anodal probe (4) include anodal probe pole (4.8), and it is the hollow tube, anodal probe pole (4.8) include the test end that links to each other with homonymy cylinder battery (1), the wiring end that links to each other with test equipment, still including the cross section that is located between the two for first interlude (4.81) of circular shape anodal probe pole and cross section are anodal probe pole second interlude (4.82) of D shape, anodal probe pole first interlude (4.81) are close to the test end, anodal probe pole second interlude (4.82) wear to locate in the through-hole, form the restriction between anodal probe pole first interlude (4.81) and the anodal probe pole second interlude (4.82) anodal probe pole spacing step face (4.83) that anodal probe pole (4.8) removed, anti-rotation structure still includes anodal probe pole second interlude (4.82).

6. The combined probe tool for testing the cylindrical battery on the same side as the claim 5, wherein: the diameter of the first middle section (4.81) of the anode probe rod is larger than that of the first middle section (3.81) of the cathode probe rod.

7. The combined probe tool for testing the cylindrical batteries on the same side as the combined probe tool in claim 5, wherein the combined probe tool comprises: base (2) are the stairstepping, including being close to first base (2.1) of wiring end and being close to second base (2.2) of test end, the height that highly is greater than second base (2.2) of first base (2.1), correspond on second base (2.2) three process holes that are used for holding positive negative pole probe spring have been seted up to the tip of three through-hole.

8. The combined probe tool for testing the cylindrical batteries on the same side according to claim 7, wherein: the lengths of the first middle section (3.81) of the negative pole probe rod and the first middle section (4.81) of the positive pole probe rod are both larger than the height of the second base (2.2).

9. The combined probe tool for testing the cylindrical battery on the same side as the claim 7, wherein: the size and the shape of the cross section of the three through holes on the first base (2.1) correspond to the size and the shape of the cross section of the second middle section (4.82) of the positive electrode probe rod and the second middle section (3.82) of the negative electrode probe rod.

10. The combined probe tool for testing the cylindrical battery on the same side as the claim 5, wherein: the end parts of the positive probe voltage contact head (4.1) and the negative probe voltage contact head (3.1) are circular, and a plurality of protruding sharp points are uniformly arranged along the circumference.

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