CN218767056U - Eccentric probe and charge-discharge detection device - Google Patents
Eccentric probe and charge-discharge detection device Download PDFInfo
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- CN218767056U CN218767056U CN202222507367.5U CN202222507367U CN218767056U CN 218767056 U CN218767056 U CN 218767056U CN 202222507367 U CN202222507367 U CN 202222507367U CN 218767056 U CN218767056 U CN 218767056U
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Abstract
The application provides an eccentric probe and charge-discharge detection device. The eccentric probe comprises a voltage probe, a current probe, a base, a first nut, a second nut and an outer spring; the current probe is hollow and sleeved outside the voltage probe, and an insulating sleeve is arranged between the voltage probe and the current probe; the current probe comprises a rod body and a needle head arranged at one end of the rod body, and the orthographic projection of the rod body falls into the orthographic projection of the needle head along the extending direction of the rod body; the base is sleeved on the rod body, the center of the base is staggered with the central axis of the probe, and the central axis of the probe is the central axis of the voltage probe and the central axis of the current probe; the first nut and the second nut are screwed on the rod body through the external threads of the rod body respectively, and the second nut is arranged between the first nut and the base; the outer spring is sleeved on the part of the rod body between the needle head and the base. This application is with voltage probe and current probe eccentric settings, is favorable to avoiding negative pressure suction nozzle and probe mutual interference when the distance between electrode and notes liquid hole is less.
Description
Technical Field
The application relates to the technical field of probes, in particular to an eccentric probe and a charging and discharging detection device.
Background
Currently, negative pressure formation is commonly used in the industry to exhaust gas generated inside the battery, for example, by inserting a negative pressure suction nozzle into a liquid injection hole of the battery to vacuumize the inside of the battery. The electrolyte injection hole is generally provided in the top cover of the battery together with an electrode (positive electrode or negative electrode) located at the center of the battery, and the electrolyte injection hole is offset from the center of the battery. When the distance between the electrode and the liquid injection hole is small, for example, the center distance between the electrode and the liquid injection hole is less than 9mm, the center axis of the negative pressure suction nozzle and the center axis of the probe are necessarily parallel, so that the short center distance can cause mutual interference between the negative pressure suction nozzle and the probe, and the negative pressure resistance piece and the probe cannot be assembled.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides an eccentric probe and a charge and discharge detection device, which can solve the problem of interference between a negative pressure suction nozzle and a probe caused by a small distance between an electrode and a liquid injection hole.
The application provides an eccentric probe, includes:
a voltage probe;
the current probe is hollow and sleeved outside the voltage probe, and an insulating sleeve is arranged between the voltage probe and the current probe; the current probe comprises a rod body and a needle head arranged at one end of the rod body, and the orthographic projection of the rod body falls into the orthographic projection of the needle head along the extending direction of the rod body;
the base is sleeved on the rod body, the center of the base is staggered with the central axis of the probe, and the central axis of the probe is the central axis of the voltage probe and the central axis of the current probe;
the first nut and the second nut are screwed on the rod body through the external threads of the rod body respectively, and the second nut is arranged between the first nut and the base;
the outer spring is sleeved on the part of the rod body between the needle head and the base.
Optionally, along the extending direction of the rod body, the orthographic projection of the outer spring falls into the orthographic projection of the base.
Optionally, the distance between the inner wall of the current probe and the voltage probe is greater than the thickness of the insulating sleeve.
Optionally, the base includes uide bushing and installation department, the uide bushing is established in one side of installation department and dorsad the outer spring extends (move towards promptly the second nut extends), the opposite side orientation of installation department the outer spring, the installation department is provided with two mounting holes, the body of rod is located between two mounting holes and with the distance of two mounting holes equals.
Optionally, the eccentric probe further comprises a snap ring fixedly arranged outside the voltage probe and abutted against the other end of the rod body.
Optionally, the eccentric probe further comprises an inner spring sleeved outside the voltage probe and located in the insulating sleeve, and the inner spring is used for applying a force towards the needle head to the voltage probe in a stressed state.
Optionally, the inner spring is sleeved in a preset region of the voltage probe, the diameter of the preset region is smaller than the diameter of other regions, and two ends of the inner spring are abutted to the boundary between the preset region and other regions in a stressed state.
Optionally, in an unstressed state of the outer spring, the voltage probe protrudes out of the needle.
The application provides a charge-discharge detection device, including the support to and as above any one eccentric probe, the base is fixed in on the support, voltage probe with the same electrode butt of current probe and battery.
Optionally, charge-discharge detection device still includes electric current line and voltage line, the voltage line connect in voltage probe keeps away from the one end of syringe needle, the electric current line encloses to be located the body of rod is located first nut with part between the second nut, and the accessible first nut with the second nut presss from both sides the clamp fixedly.
As above, this application staggers the setting with the center of base and probe axis, and this probe axis is voltage probe and current probe's axis, promptly, with probe eccentric settings, is favorable to avoiding negative pressure suction nozzle and probe mutual interference when the distance between electrode and notes liquid hole is less.
Drawings
Fig. 1 is a schematic structural diagram of an eccentric probe according to an embodiment of the present disclosure;
FIG. 2 is a partial schematic view of the eccentric probe shown in FIG. 1 in a top view;
fig. 3 is a schematic diagram of an inner spring and a voltage probe according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described below in detail with reference to specific embodiments and accompanying drawings. It should be apparent that the embodiments described below are only some embodiments of the present application, and not all embodiments. In the following embodiments and technical features thereof, all of which are described below may be combined with each other without conflict, and also belong to the technical solutions of the present application.
It should be understood that in the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience of describing technical solutions and simplifying the description of the respective embodiments of the present application, but do not indicate or imply that a device or an element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Referring to fig. 1 and 2, the eccentric probe 1 includes a voltage probe 11, a current probe 12, a base 13, a first nut 141, a second nut 142, and an outer spring 151.
The voltage probe 11 and the current probe 12 are both cylindrical structural members, the diameter of the voltage probe 11 is smaller and is used for detecting a voltage signal of the battery, and the diameter of the current probe 12 is larger and is used for detecting a current signal of the battery or charging the battery. The current probe 12 is hollow inside and sleeved outside the voltage probe 11, and an insulating sleeve 16, such as a rubber sleeve, is disposed between the voltage probe 11 and the current probe 12 to electrically insulate the voltage probe 11 and the current probe 12 through the insulating sleeve 16. Optionally, the length of the voltage probe 11 is greater than that of the current probe 12, so that two ends of the voltage probe 11 extend out of the current probe 12, and the insulating sleeve 16 extends out of the current probe 12, thereby preventing the end of the current probe 12 from electrically contacting the voltage probe 11, and achieving a better insulating effect.
Optionally, the eccentric probe 1 further comprises an inner spring 152, the inner spring 152 is sleeved outside the voltage probe 11 and is located in the insulating sleeve 16, and the inner spring 152 is used for applying a force to the voltage probe 11 towards the battery in a stressed state. In one implementation, as shown in fig. 3, the voltage probe 11 may be provided with a preset region 112, the inner spring 152 is sleeved on the preset region 112, the diameter of the preset region 112 is smaller than that of the other regions 111, and two ends of the inner spring 152 abut against the boundaries of the preset region 112 and the other regions 111 in a stressed state. It should be understood that the mating configuration of the inner spring 152 and the voltage probe 11 shown in fig. 3 is merely an exemplary illustration, and other mating configurations may be provided in other scenarios of the present application.
The current probe 12 includes a shaft 121 and a tip 122, the tip 122 being disposed at an end of the shaft 121 for contacting a battery electrode, such as a lower end of the orientation shown in fig. 1. The diameter of needle 122 is larger than the diameter of rod 121, so that the orthographic projection of rod 121 falls within the orthographic projection of needle 122 along the extending direction y of rod 121, and needle 122 forms an annular protrusion outside rod 121.
The extending direction y of the rod body 121 may be regarded as the height direction of the eccentric probe 1, the width direction of the eccentric probe 1 may be the first direction x, and the thickness direction of the eccentric probe 1 may be the third direction z. The directions x, y and z are perpendicular to each other. In view of process, measurement and other errors, the term perpendicular throughout this application does not require that the angle between the two must be 90 °, but allows a deviation of ± 10 °, i.e. perpendicular is understood to mean that the angle between any two directions is 80 ° to 100 °. Likewise, throughout this application, the term parallel does not require that the angle between the two must be 0 ° or 180 °, but rather that a deviation of ± 10 ° is allowed, i.e. parallel is understood to mean that the angle between any two directions is 0 ° to 10 ° or 170 ° to 190 °.
Optionally, the eccentric probe 1 further includes a snap ring 17, the snap ring 17 is fixedly disposed outside the voltage probe 11, for example, a diameter of the snap ring 17 is larger than a diameter of the other end (e.g., the upper end shown in fig. 1) of the rod 121, so that the snap ring 17 abuts against the other end of the rod 121. In the orientation shown in fig. 1, the voltage probe 11 moves downward under the action of gravity, and the snap ring 17 abuts against the upper end of the rod 121, so as to prevent the voltage probe 11 from moving downward relative to the current probe 12 and separating from the current probe 12.
The base 13 is sleeved on the rod body 121; the first nut 141 and the second nut 142 are screwed on the rod body 121 through the external threads of the rod body 121, and the second nut 142 is located between the first nut 141 and the base 13; the outer spring 151 is disposed on the rod 121 between the needle 122 and the base 13.
Taking the base 13 shown in fig. 2 as an example, the base 13 includes a guiding sleeve 131 and a mounting portion 132, the guiding sleeve 131 is disposed on one side of the mounting portion 132 and extends toward the second nut 142, the other side of the mounting portion 132 faces the outer spring 151, the mounting portion 132 is in a rounded rectangle and is provided with two mounting holes 133, and the rod 121 is located between the two mounting holes 133 and is equal to the distance between the two mounting holes 133. Here, the center O of the base 13 1 At equidistant points between the two mounting holes 133.
The base 13 is fixed to an external device, such as a bracket of a negative pressure forming assembly, through the two mounting holes 133, and the second nut 142 is screwed so that the second nut 142 abuts against the guide sleeve 131 of the base 13 to limit the base 13 from moving toward the first nut 141. The two terminal electrodes (positive electrode and negative electrode) of the battery are respectively connected to an eccentric probe 1, taking one terminal of the battery as an example, the voltage line is connected to one terminal of the voltage probe 11 away from the needle 122, the current line is enclosed in the portion of the rod body 121 between the first nut 141 and the second nut 142, and the current line is clamped and fixed between the first nut 141 and the second nut 14 and electrically connected to the rod body 121 by screwing the first nut 141. The voltage probe 11 contacts the electrode, the fixed base 13 makes the outer spring 151 in a stressed state (i.e. a compressed state), and the outer spring 151 will abut against the needle 122 and apply a force to the needle 122 toward the battery, so that the needle 122 of the current probe 12 makes good contact with the electrode of the battery. At the same time, inner spring 152 is also under compression in the stressed state, and applies a force to voltage probe 11 toward needle 122 (and also toward the battery), so that the lower end of voltage probe 11 makes good contact with the electrode of the battery. In this way, the eccentric probe 1 can detect the current and voltage of the battery, and complete the charge and discharge detection of the battery, for example.
Alternatively, in an unstressed state of the external spring 151, the lower end of the voltage probe 11 protrudes out of the needle 122, so that the voltage probe 11 can be brought into close contact with the electrode of the battery.
Referring to fig. 1, when viewed along the extending direction y of the rod 121, the orthographic projection of the outer spring 151 falls into the orthographic projection of the base 13, so as to prevent the outer spring 151 from deviating from the base 13 when in a compressed state.
Optionally, the distance between the inner wall of the current probe 12 and the voltage probe 11 is larger than the thickness of the insulating sleeve 16, and here the voltage probe 11 may have a slightly movable space within the hollow cavity of the current probe 12, avoiding the current probe 12 to break or deform irreversibly.
In the eccentric probe 1 of the present application, the central axes of the voltage probe 11 and the current probe 12 coincide to form the probe central axis L 0 Center O of base 13 1 And the central axis L of the probe 0 The arrangement is staggered. The offset arrangement is understood to mean: center O of the base 13 1 Not located in the probeCentral axis L 0 The above. Referring to fig. 2, the centers of the two mounting holes 133 of the base 13 are located on the same straight line L along the third direction z 1 The center point between the two mounting holes 133 is the center O of the base 13 1 In a first direction x, the center O of the base 13 1 And the center point O of the probe 0 With a distance of unequal zero, wherein the probe center point O 0 Can be regarded as the central axis L of the probe 0 Points viewed along direction y.
That is, the probe is made eccentric (offset from the center O of the base 13) 1 ) Setting the central axis L of the probe 0 The distance between the first edge 13a of the base 13 is less than the central axis L of the probe 0 And a second edge 13b of the base 13, wherein the first edge 13a and the second edge 13b are oppositely disposed. In the process of carrying out the negative pressure formation to the battery, eccentric probe 1 and negative pressure suction nozzle parallel arrangement, the adjacent negative pressure suction nozzle of second edge 13b of base 13 compares in prior art, and the distance between eccentric probe 1 and the negative pressure suction nozzle can increase to be favorable to avoiding the mutual interference between negative pressure suction nozzle and the eccentric probe 1.
The embodiment of the present application further provides a charge and discharge detection device, which includes a bracket and the eccentric probe 1 according to any one of the above embodiments, and thus has the beneficial effects that the eccentric probe 1 according to the corresponding embodiment can produce. The base 13 of the eccentric probe 1 is fixed to a support, which may be a structural part of a negative pressure assembly, the voltage probe 11 and the current probe 12 being intended to abut the same electrode of the battery.
Optionally, the charge/discharge detecting device further includes a current line and a voltage line, the voltage line is connected to an end of the voltage probe 11 away from the needle 122, the current line is enclosed in a portion of the rod body 121 located between the first nut 141 and the second nut 142, and can be clamped and fixed by the first nut 141 and the second nut 14, so that the current line is in close contact with (the rod body 121 of) the current probe 12.
The operation principle or process of the eccentric probe 1 and the charge/discharge detecting device of the present invention will be described based on fig. 1 to 3.
By screwing the second nut 142, the second nut 142 drives the base 13 to press the outer spring 151 downwards, the outer spring 151 in a compressed state abuts against the pin 122 and applies a force to the pin 122 towards the battery, so that the pin 122 of the current probe 12 moves downwards to contact with the electrode of the battery. The upper end of the outer spring 151 in the compressed state applies an upward acting force to the base 13, and the current probe 12 cannot move upwards due to the blocking of the snap ring 17, so that the outer spring 151 is always in the compressed state, and the needle 122 of the current probe 12 moves downwards to be in continuous contact with the electrode of the battery.
Meanwhile, the lower end of the voltage probe 11, which originally extends out of the needle 122, is acted upward by the battery contact, as shown in fig. 3, the other region 111 of the lower half of the voltage probe 11 compresses the inner spring 152, and the compressed inner spring 152 applies a downward acting force to the other region 111 of the lower half of the voltage probe 11, so that the lower end of the voltage probe 11 is in good contact with the electrode of the battery. Since the upper end of the voltage probe 11 is fixed to the current probe 12 or can slide relatively only in a short range, the voltage probe 11 is prevented from moving upward, so that the inner spring 152 is always in a compressed state, and the lower end of the voltage probe 11 is in continuous contact with the electrode of the battery.
Therefore, the current line and the voltage line are electrically connected with the electrode of the battery, and the current parameter and the voltage parameter are respectively read by the instrument respectively connected with the current line and the voltage line, so that the charging and discharging detection of the battery can be completed.
The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent structural changes made by using the contents of the present specification and the drawings will be included in the protection scope of the present application for a person skilled in the art.
Although the terms "first, second, etc. are used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. In addition, the singular forms "a", "an" and "the" are intended to include the plural forms as well. The terms "or" and/or "are to be construed as inclusive or meaning any one or any combination. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.
Claims (10)
1. An eccentric probe, comprising:
a voltage probe;
the current probe is hollow and sleeved outside the voltage probe, and an insulating sleeve is arranged between the voltage probe and the current probe; the current probe comprises a rod body and a needle head arranged at one end of the rod body, and the orthographic projection of the rod body falls into the orthographic projection of the needle head along the extending direction of the rod body;
the base is sleeved on the rod body, the center of the base is staggered with the central axis of the probe, and the central axis of the probe is the central axis of the voltage probe and the central axis of the current probe;
the first nut and the second nut are screwed on the rod body through the external threads of the rod body respectively, and the second nut is arranged between the first nut and the base;
the outer spring is sleeved on the part of the rod body between the needle head and the base.
2. An eccentric probe according to claim 1, characterized in that the orthographic projection of the outer spring falls within the orthographic projection of the base in the direction of extension of the shaft.
3. The eccentric probe of claim 1, wherein the distance between the inner wall of the current probe and the voltage probe is greater than the thickness of the insulating sleeve.
4. The eccentric probe of claim 1, wherein the base comprises a guide sleeve and an installation part, the guide sleeve is arranged on one side of the installation part and extends away from the outer spring, the other side of the installation part faces the outer spring, the installation part is provided with two installation holes, and the rod body is positioned between the two installation holes and is equal to the distance between the two installation holes.
5. The eccentric probe of claim 1, further comprising a snap ring fixedly disposed outside the voltage probe and abutting against the other end of the rod.
6. The eccentric probe of claim 1, further comprising an inner spring sleeved outside the voltage probe and within the insulating sleeve, the inner spring for applying a force to the voltage probe towards the needle head in a stressed state.
7. The eccentric probe of claim 6, wherein said inner spring is sleeved in a predetermined region of said voltage probe, said predetermined region has a diameter smaller than that of other regions, and both ends of said inner spring abut against the boundary between said predetermined region and said other regions under a force.
8. An eccentric probe according to claim 1, characterized in that the voltage probe protrudes beyond the needle head in the unstressed state of the outer spring.
9. A charge and discharge detecting device comprising a holder and the eccentric probe of any one of claims 1 to 8, wherein the base is fixed to the holder, and the voltage probe and the current probe abut against the same electrode of a battery.
10. The device of claim 9, further comprising a current line and a voltage line, wherein the voltage line is connected to an end of the voltage probe away from the needle, and the current line is enclosed in a portion of the rod between the first nut and the second nut and is clamped and fixed by the first nut and the second nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222507367.5U CN218767056U (en) | 2022-09-20 | 2022-09-20 | Eccentric probe and charge-discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222507367.5U CN218767056U (en) | 2022-09-20 | 2022-09-20 | Eccentric probe and charge-discharge detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218767056U true CN218767056U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222507367.5U Active CN218767056U (en) | 2022-09-20 | 2022-09-20 | Eccentric probe and charge-discharge detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218767056U (en) |
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2022
- 2022-09-20 CN CN202222507367.5U patent/CN218767056U/en active Active
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