CN111044919B - Probe module and modularized lithium battery testing device - Google Patents
Probe module and modularized lithium battery testing device Download PDFInfo
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- CN111044919B CN111044919B CN201911246957.3A CN201911246957A CN111044919B CN 111044919 B CN111044919 B CN 111044919B CN 201911246957 A CN201911246957 A CN 201911246957A CN 111044919 B CN111044919 B CN 111044919B
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- fixing seat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/3865—Arrangements for measuring battery or accumulator variables related to manufacture, e.g. testing after manufacture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
- G01R1/07307—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card
- G01R1/07357—Multiple probes with individual probe elements, e.g. needles, cantilever beams or bump contacts, fixed in relation to each other, e.g. bed of nails fixture or probe card with flexible bodies, e.g. buckling beams
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention discloses a probe module and a modularized lithium battery testing device, wherein the probe module comprises a probe mounting frame and a plurality of probe components which are arranged on the probe mounting frame in an interval adjustable mode, and the probe components comprise: the probe fixing seat is slidably arranged on the probe mounting frame and is provided with a through hole which is axially formed; the probe is movably arranged in the through hole and is provided with an extending state which extends outwards relative to the probe fixing seat and can be contacted with the battery pack to be tested and a retracting state which retracts inwards relative to the probe fixing seat and is separated from the battery pack to be tested. This kind of probe module can switch into the probe module of different grade type, can detect the lithium cell group of different grade type under the condition that need not change probe module type, has solved the inconvenient problem of probe module remodelling.
Description
Technical Field
The invention relates to the technical field of lithium battery testing, in particular to a probe module and a modularized lithium battery testing device.
Background
Nowadays, with the development of microelectronic technology, miniaturized devices are increasing, and thus, high requirements are placed on power supplies. The lithium battery is delicate and convenient and has a charging and discharging function, so that a large-scale practical stage is entered. And the test equipment of the lithium battery is an indispensable ring in battery production.
The upper assembly structure of the modular lithium battery testing device shown in fig. 1 and 2 comprises a frame 100 ', a negative pressure cup module 300 ' and a probe module 200 ' which are arranged on the frame 100 ', wherein the negative pressure cup module 300 ' comprises eight groups of negative pressure cups, and each negative pressure cup corresponds to a single lithium battery; the probe module 200 'includes a probe fixing plate 210' and probe assemblies 220 'mounted on the probe fixing plate 210' for respectively detecting eight groups of single-stage lithium batteries; the probe assembly 220 'is connected to a probe mounting base 230', and the probe mounting base 230 'is fixed to the probe fixing plate 210' by screws.
In practical applications, the lithium battery pack has various types including 8 groups of lithium batteries, 12 groups of lithium batteries and 16 groups of lithium batteries, and the distances between adjacent lithium batteries in the lithium battery packs of different types are also different. The probe components in the probe module are fixed on the probe fixing plate through screws, and the positions of the probe components on the probe fixing plate cannot be adjusted; at present, the test to different grade type lithium cell group needs through the probe module of changing the different grade type, has the inconvenient problem of probe module remodelling.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problem that different types of probe modules are required to be adopted for testing lithium battery packs with different numbers or intervals in the prior art, so that the probe modules and the modularized lithium battery testing device which are convenient to change types and meet the testing requirements of the different types of lithium battery modules are provided.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a probe module comprising a probe mount and a plurality of probe assemblies pitch adjustably mounted to said probe mount, said probe assemblies comprising:
the probe fixing seat is slidably arranged on the probe mounting frame and is provided with a through hole which is axially formed;
the probe is movably arranged in the through hole and is provided with an extending state which extends outwards relative to the probe fixing seat and can be contacted with the battery pack to be tested and a retracting state which retracts inwards relative to the probe fixing seat and is separated from the battery pack to be tested.
Furthermore, a sliding groove structure is arranged on the probe mounting frame, and the probe fixing seat is slidably mounted on the sliding groove structure.
Further, the probe is a current probe.
Furthermore, a first clamping position and a second clamping position which are sequentially arranged along the axis direction of the through hole are arranged on the inner peripheral wall of the probe fixing seat; the current probe includes:
a current probe body;
the current probe sleeve is fixedly sleeved on the periphery of the current probe needle body, and is provided with a buckling body which can be buckled with the first buckling position on the probe fixing seat so as to enable the current probe needle body to be in the extending state or buckled with the second buckling position so as to enable the current probe needle body to be in the retracting state;
the first elastic piece is sleeved on the periphery of the current probe sleeve, one end of the first elastic piece is connected with the top of the probe fixing seat, and the elastic force of the first elastic piece drives the current probe sleeve to overcome self gravity and enable the buckle body to be buckled on the first clamping position or the second clamping position.
Further, the spout structure is for setting up the logical groove that just the tank bottom link up on the probe mounting bracket, the probe subassembly still establishes including the cover current probe sheathed tube periphery and with the probe mounting bracket is located lead to the fixed roof that the roof of the relative both sides of groove offset, the probe fixing base is relative the one end of fixed roof be equipped with the probe mounting bracket is located lead to the PMKD that the diapire of the relative both sides of groove offset, the last locating pin that is equipped with of PMKD, seted up on the diapire of probe mounting bracket a plurality of with the locating hole that the locating pin corresponds.
Furthermore, a hook body which is convenient for holding the probe fixing seat so as to pull the positioning pin out of the positioning hole is connected to the fixing bottom plate.
Further, the probe is a temperature probe.
Further, be equipped with the draw-in groove on the inner wall of probe fixing base, temperature probe includes:
the temperature probe mounting seat is fixedly connected to the probe fixing seat, and one end of the temperature probe mounting seat extends out of the through hole in the probe fixing seat;
the temperature probe needle body is movably connected to the temperature probe mounting seat along the axial direction of the temperature probe needle body, one end of the temperature probe needle body is provided with a lower limiting block which can be embedded into the clamping groove to enable the temperature probe needle body to be in the retraction state, and the other end of the temperature probe needle body is provided with an upper limiting block which can be abutted against the temperature probe mounting seat to enable the temperature probe needle body to be in the extension state;
the second elastic piece is sleeved on the periphery of the temperature probe needle body, and when the lower limiting block of the temperature probe needle body is separated from the clamping groove of the probe fixing seat, the elastic force of the lower limiting block drives the temperature probe needle body to move from the retraction state to the extension state.
Further, the chute structure is a T-shaped chute arranged on the side wall of the probe mounting frame, and a T-shaped clamping block which is slidably mounted on the T-shaped chute is connected to the probe fixing seat.
On the other hand, the embodiment of the invention also provides a modular lithium battery testing device which comprises the probe module.
The technical scheme of the invention has the following advantages:
1. according to the probe module provided by the invention, the probe body of the probe assembly has two forms of an extending state and a retracting state relative to the probe fixing seat, and the positions of a plurality of groups of probe assemblies on the probe mounting frame are adjustable, so that when different types of lithium battery packs are tested, the positions of the plurality of probe assemblies are only required to be moved on the probe mounting frame, the probe assemblies with the number of single batteries on the lithium battery pack to be tested are in the extending state, and the rest probe assemblies are in the retracting state, so that the different types of lithium battery packs can be tested under the condition that the types of the probe modules are not required to be replaced, and the problem that the probe module is inconvenient to replace.
2. According to the probe module provided by the invention, the probe fixing seat realizes the positioning mode of the probe assembly through the positioning pin on the fixing bottom plate and the positioning hole on the probe mounting frame, when the position of the probe assembly needs to be moved, the fixing bottom plate of the probe fixing seat only needs to be pulled downwards, so that the positioning pin is separated from the positioning hole, and meanwhile, the first elastic piece is compressed; then along the required position of spout structure slip probe fixing base, loosen fixed baseplate, probe fixing base upward movement under the elastic restoring force effect of first elastic component makes the locating pin on the fixed baseplate stretch into in another locating hole of probe fixing base to realize the location of probe fixing base and probe subassembly, improve the stability of probe subassembly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of an overall structure of an upper assembly body structure in a lithium battery formation and capacity grading device in the prior art;
FIG. 2 is a schematic diagram of an overall structure of a probe module in the prior art;
FIG. 3 is a front view of a 16-channel probe module in accordance with an embodiment of the present invention;
FIG. 4 is a front view of a 16-channel probe module transformed into a 12-channel probe module according to an embodiment of the present invention;
FIG. 5 is a front view of an embodiment of the present invention after a 16-channel probe module is converted into an 8-channel probe module;
FIG. 6 is a schematic diagram of the overall structure of the probe module with 16 channels after being transformed into the probe module with 12 channels according to the embodiment of the present invention;
FIG. 7 is an enlarged view taken at A in FIG. 6;
FIG. 8 is an elevational view of the current probe assembly in an extended state in accordance with an embodiment of the present invention;
FIG. 9 is a cross-sectional view of a current probe assembly in an extended state in accordance with an embodiment of the present invention;
FIG. 10 is an elevational view of the current probe assembly in a retracted state in accordance with an embodiment of the present invention;
FIG. 11 is a cross-sectional view of a current probe assembly in a retracted state in accordance with an embodiment of the present invention;
FIG. 12 is an enlarged view at B in FIG. 6;
FIG. 13 is an elevational view of the temperature probe assembly in an extended condition in accordance with an embodiment of the present invention;
FIG. 14 is a cross-sectional view taken along plane C-C of FIG. 13;
FIG. 15 is a schematic view of the overall structure of the temperature probe assembly in the retracted state according to the embodiment of the present invention
FIG. 16 is an elevational view of the temperature probe assembly in a retracted state in accordance with an embodiment of the present invention;
FIG. 17 is a cross-sectional view taken along plane D-D of FIG. 16;
fig. 18 is a cross-sectional view taken along plane E-E of fig. 17.
Description of reference numerals:
100', a frame; 200' and a probe module; 210', a probe fixing plate; 220', a probe assembly; 230', a probe mounting seat; 300', a negative pressure cup module;
10. a current probe mounting bracket; 110. a through groove;
20. a current probe assembly; 210. a current probe fixing seat; 211. a first clamping position; 212. a second card position; 213. fixing the bottom plate; 214. positioning pins; 215. a hook-shaped body; 220. a current probe body; 230. a current probe sleeve; 231. a buckle body; 240. a first elastic member; 250. fixing a top plate;
30. a temperature probe mounting bracket; 310. a T-shaped chute;
40. a temperature probe assembly; 410. a temperature probe fixing seat; 411. a T-shaped fixture block; 412. a card slot; 420. a temperature probe mounting base; 430. a temperature probe body; 431. a lower limiting block; 432. an upper limit block; 440. a second elastic member; 450. a soft rubber sleeve; 460. a temperature probe tip.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
A probe module, as shown in fig. 3-6, includes a probe mount and a number of probe assemblies pitch-adjustably mounted to the probe mount. Because common lithium cell group has three kinds including eight group lithium cells, twelve group lithium cells and sixteen group lithium cells, in this embodiment, the probe subassembly specifically is provided with sixteen groups to conveniently test three kinds of above-mentioned lithium cell group. It should be understood herein that the number of probe assemblies may be selected as desired for the application.
In this embodiment, the probe assembly can be a current probe assembly 20 or a temperature probe assembly 40. It should be understood herein that any sensing device that measures certain properties of a lithium battery pack by contact with a lithium battery is within the scope of the present invention, such as a negative pressure chuck that detects lithium battery leaks by contact with a lithium battery, may also be understood as a probe assembly in the present application.
In this embodiment, the probe mounting bracket for mounting the current probe assembly 20 is the current probe mounting bracket 10, and the current probe mounting bracket 10 is provided with a through groove 110 penetrating through the bottom of the groove. The current probe assembly 20 comprises a current probe fixing seat 210 and a current probe, wherein the current probe fixing seat 210 is slidably mounted on the through groove 110 of the current probe mounting frame 10 and is provided with a through hole which is axially formed; the current probe is movably installed in the through hole and has an extending state which extends outwards relative to the current probe fixing seat 210 and can be contacted with a battery pack to be tested and a retracting state which retracts inwards relative to the current probe fixing seat 210 and is separated from the battery pack to be tested.
As shown in fig. 3-5, a probe module having sixteen sets of current probe assemblies 20 is used as an example to describe a rapid prototyping process of the probe module. When the probe module needs to test a lithium battery pack containing twelve lithium batteries, the twelve current probe assemblies 20 are kept in an extending state, the other four current probe assemblies 20 are in a retracting state, and the distance between the sixteen current probe assemblies 20 is adjusted, so that the twelve current probe assemblies 20 in the extending state correspond to the twelve lithium batteries on the lithium battery pack one by one; similarly, when the probe module needs to test the lithium battery pack containing eight groups of lithium batteries, the eight groups of current probe assemblies 20 are kept in a stretching state, the eight groups of current probe assemblies 20 are in a retracting state, and the distance between the sixteen groups of current probe assemblies 20 is adjusted, so that the eight groups of current probe assemblies 20 in the stretching state correspond to the eight groups of lithium batteries on the lithium battery pack one by one. When testing the lithium battery packs of different types, the probe module does not need to be replaced, the problem that the probe module is inconvenient to replace is solved, and then the working efficiency is improved.
In this embodiment, the inner peripheral wall of the current probe holder 210 is provided with a first detent 211 and a second detent 212 sequentially arranged along the axial direction of the through hole. Preferably, the first and second detents 211 and 212 are oppositely disposed on the inner peripheral wall of the current probe holder 210. The current probe comprises at least a current probe needle 220, a current probe sleeve 230 and a first elastic member 240; wherein, the current probe sleeve 230 is fixedly sleeved on the periphery of the current probe pin body 220 and the upper end thereof penetrates out from the upper end of the current probe fixing seat 210, and the two ends of the current probe pin body 220 respectively penetrate out from the upper end and the lower end of the current probe sleeve 230; the outer peripheral wall of the current probe sleeve 230 is provided with a buckle 231 which is buckled with the first detent 211 on the current probe holder 210 to make the current probe pin 220 in an extended state or buckled with the second detent 212 on the current probe holder 210 to make the current probe pin 220 in a retracted state. The first elastic element 240 is disposed around the current probe sleeve 230, and has one end connected to the top of the current probe holder 210 and the other end connected to the extending portion of the top end of the current probe sleeve 230, and the elastic force thereof drives the current probe sleeve 230 to overcome its own gravity and make the buckle 231 buckle the first lock position 211 or the second lock position 212. Specifically, the button 231 is a protruding ring located at the lower end of the current probe sleeve 230 and protruding out of the outer sidewall of the current probe sleeve 230, and the first elastic element 240 is a spring.
The current probe is adjusted from the extended state to the retracted state as follows: the current probe pin 220 is rotated 180 degrees along the axial direction of the current probe pin 220, so that the buckle 231 on the current probe sleeve 230 is adjusted from the position buckled with the first buckle position 211 to the position corresponding to the second buckle position 212, the current probe pin 220 is loosened, the current probe pin 220 and the current probe sleeve 230 move upwards under the elastic restoring force of the first elastic member 240 until the buckle 231 on the current probe sleeve 230 is buckled with the second buckle position 212 on the inner wall of the current probe fixing seat 210, and the current probe pin 220 is kept in a retraction state under the elastic force of the first elastic member 240 and the limiting action of the second buckle position 212 on the buckle 231. The process of adjusting the current probe from the retracted state to the extended state is the reverse of the above process, and the specific process is as follows: the current probe pin 220 is pulled downwards, so that the buckle 231 at the lower end of the current probe sleeve 230 penetrates out of the lower end edge of the through hole in the current probe fixing seat 210, the current probe pin 220 is rotated 180 degrees along the axial direction of the current probe pin 220, the buckle 231 on the current probe sleeve 230 is adjusted to a position corresponding to the first clamp 211 from the position buckled with the second clamp 212, the current probe pin 220 is loosened, the current probe pin 220 and the current probe sleeve 230 move upwards under the action of the elastic restoring force of the first elastic piece 240 until the buckle 231 on the current probe sleeve 230 is buckled with the first clamp 211 on the inner wall of the current probe fixing seat 210, and the current probe 220 keeps an extending state under the elastic force of the first elastic piece 240 and the limiting action of the first clamp 211 on the buckle 231; the current probe can be switched between the extending state and the retracting state at will, and the current probe has the advantages of simple structure and convenience in operation.
In this embodiment, the current probe assembly 20 further includes a fixed top plate 250 disposed on the periphery of the current probe sleeve 230 and abutting against the top walls of the current probe mounting frame 10 on the two opposite sides of the through slot 110; one end of the current probe fixing base 210 opposite to the fixing top plate 250 is provided with a fixing bottom plate 213 which is abutted against the bottom wall of the current probe mounting frame 10 on the opposite two sides of the through groove 110. The fixing base plate 213 is provided with a positioning pin 214, and the bottom wall of the current probe mounting frame 10 is provided with a plurality of positioning holes (not shown) corresponding to the positioning pin 214. Specifically, the number and the positions of the positioning holes are determined according to the number of the current probe assemblies 20 in the probe module and the positions of the current probe assemblies 20 after the probe module is remodeled. The current probe fixing seat 210 realizes the positioning of the current probe assembly 20 through the positioning pin 214 on the fixing base plate 213 and the positioning hole on the current probe mounting bracket 10, when the position of the current probe assembly 20 needs to be moved, only the fixing base plate 213 of the current probe fixing seat 210 needs to be pulled out downwards, so that the positioning pin 214 is disengaged from the positioning hole, and meanwhile, the first elastic member 240 is compressed; then, the current probe fixing base 210 is slid to a desired position along the direction of the through groove 110, the fixing base plate 213 is loosened, the current probe fixing base 210 moves upward under the elastic restoring force of the first elastic member 240, so that the positioning pin 214 on the fixing base plate 213 extends into another positioning hole of the current probe fixing base 210, thereby positioning the current probe fixing base 210 and the current probe assembly 20, and improving the stability of the current probe assembly 20.
Preferably, hooks 215 are attached to opposite sides of the fixing base plate 213 to facilitate gripping the current probe fixing base 210 so as to pull the positioning pins 214 out of the positioning holes.
In the present embodiment, the probe mounting bracket where the temperature probe assembly 40 is mounted is a temperature probe mounting bracket 30, and the temperature probe mounting bracket 30 is connected to one side of the current probe mounting bracket 10. The side wall of the temperature probe mounting frame 30 is provided with a T-shaped sliding groove 310, and the temperature probe assembly 40 is slidably mounted on the T-shaped sliding groove 310. Specifically, the temperature probe assembly 40 includes a temperature probe fixing seat 410 and a temperature probe, the temperature probe fixing seat 410 is slidably mounted on the T-shaped chute 310 of the temperature probe mounting frame 30 and has an axially opened through hole; the temperature probe is movably arranged in the through hole and is provided with an extending state which extends outwards relative to the temperature probe fixing seat 410 and can be contacted with a battery pack to be tested, and a retracting state which retracts inwards relative to the temperature probe fixing seat 410 and is separated from the battery pack to be tested. The remodeling process of the probe module having the sixteen sets of temperature probe assemblies 40 is the same as that of the probe module having the sixteen sets of current probe assemblies 20, and thus, the description thereof is omitted.
In this embodiment, the temperature probe fixing seat 410 is connected with a T-shaped fixture block 411 slidably mounted on the T-shaped sliding groove 310, the shape of the T-shaped fixture block 411 matches with the shape of the T-shaped sliding groove 310 and is embedded in the T-shaped sliding groove 310, two ends of the T-shaped fixture block 411 are respectively provided with a first mounting hole, a plurality of second mounting holes (not shown) corresponding to the first mounting holes are formed at the bottom of the T-shaped sliding groove 310, and the first mounting holes and the second mounting holes corresponding to each other are connected through locking screws (not shown) to fix the temperature probe fixing seat 410 on the temperature probe mounting frame 30. Specifically, the number and the positions of the second mounting holes are determined according to the number of the temperature probe assemblies 40 in the probe module and the positions of the temperature probe assemblies 40 after the probe module is remodeled. Temperature probe fixing base 410 realizes the mode of being connected with temperature probe mounting bracket 30 through the locking screw that passes first mounting hole and second mounting hole, when the position of temperature probe subassembly 40 is removed to needs, only need dismantle the locking screw earlier, remove temperature probe fixing base 410 to required position, rethread locking screw locking can, this kind of structure of realizing temperature probe subassembly 40 installation location has simple structure, the high advantage of adjustability.
In this embodiment, a clamping groove 412 is formed on an inner wall of the temperature probe fixing seat 410, and the temperature probe includes a temperature probe mounting seat 420, a temperature probe pin body 430 and a second elastic member 440. Wherein, the temperature probe mounting seat 420 is fixedly connected to the through hole of the temperature probe fixing seat 410, and the upper end of the temperature probe mounting seat extends out of the through hole. The temperature probe needle body 430 is movably connected in the middle hole of the temperature probe mounting seat 420 along the axial direction, two ends of the temperature probe needle body respectively extend out of openings at two ends of the middle hole on the temperature probe mounting seat 420, the bottom end of the temperature probe needle body 430 is connected with the temperature probe needle head 460, a lower limiting block 431 protruding outwards is integrally formed on the outer peripheral wall of one end, close to the temperature probe needle head 460, of the temperature probe needle body 430, and an upper limiting block 432 protruding outwards is integrally formed on the outer peripheral wall of the other end of the temperature probe needle body 430. The lower limit block 431 has a first position inserted into the catching groove 412 to make the temperature probe pin 430 in a retracted state and a second position disengaged from the catching groove 412; the upper restraint block 432 may abut against the top of the temperature probe mount 420 to place the temperature probe pin body 430 in an extended state. The second elastic member 440 is sleeved on the outer circumference of the temperature probe pin 430, and when the lower limit block 431 of the temperature probe pin 430 is disengaged from the slot 412 of the probe fixing seat, the elastic force thereof drives the temperature probe pin 430 to move from the retracted state to the extended state. Specifically, the second elastic member 440 is also a spring.
The temperature probe is adjusted from the retracted state to the extended state as follows: the temperature probe pin body 430 is rotated 180 degrees along the axial direction of the temperature probe pin body 430, so that the lower limiting block 431 on the temperature probe pin body 430 is separated from the buckling position of the clamping groove 412 on the temperature probe fixing seat 410, then the temperature probe pin body 430 moves downwards under the action of the second elastic piece 440 until the upper limiting block 432 on the upper end of the temperature probe pin body 430 is abutted against the top of the temperature probe mounting seat 420, and the temperature probe pin body 430 is kept in an extending state under the elastic force of the second elastic piece 440 and the limiting action of the temperature probe mounting seat 420 on the upper limiting block 432; the process of adjusting the temperature probe from the extended state to the retracted state is the reverse of the above process and will not be described further herein. The temperature probe with the structure can be randomly switched between the extending state and the retracting state, and has the advantages of simple structure and convenient operation.
As shown in fig. 18, the lower stopper 431 is specifically three ribs circumferentially and uniformly spaced at the outer peripheral wall of the temperature probe tip 460.
Preferably, a soft rubber sleeve 450 is sleeved on one end of the temperature probe needle body 430 opposite to the end provided with the temperature probe needle 460.
On the other hand, the embodiment of the invention also provides a modular lithium battery testing device, which comprises a current probe mounting rack 10, a temperature probe mounting rack 30, a current probe assembly 20 which is installed on the current probe mounting rack 10 and adopts the above embodiment, and a temperature probe assembly 40 which is installed on the temperature probe mounting rack 30 and adopts the above embodiment.
In summary, according to the probe module and the modularized lithium battery testing device provided by the embodiments of the present invention, the probe body of the probe assembly has two forms, i.e., the extending state and the retracting state, relative to the probe fixing seat, and the positions of the plurality of sets of probe assemblies on the probe mounting frame are adjustable, when testing lithium battery packs of different types, only the positions of the plurality of probe assemblies need to be moved on the probe mounting frame, and the probe assemblies corresponding to the number of single batteries on the lithium battery pack to be tested are in the extending state, and the rest of the probe assemblies are in the retracting state, so that the lithium battery packs of different types can be tested without changing the types of the probe modules, and the problem of inconvenience in changing the types of.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. A probe module comprising a probe mount and a plurality of probe assemblies adjustably pitch mounted to said probe mount, said probe assemblies comprising:
the probe fixing seat is slidably arranged on the probe mounting frame and is provided with a through hole which is axially formed;
the probe is movably arranged in the through hole and is provided with an extending state which extends outwards relative to the probe fixing seat and can be contacted with a battery pack to be tested and a retracting state which retracts inwards relative to the probe fixing seat and is separated from the battery pack to be tested;
the probe mounting frame is provided with a sliding groove structure, and the probe fixing seat is slidably mounted on the sliding groove structure;
the probe is a current probe;
the inner peripheral wall of the probe fixing seat is provided with a first clamping position and a second clamping position which are sequentially arranged along the axis direction of the through hole; the current probe includes:
a current probe body;
the current probe sleeve is fixedly sleeved on the periphery of the current probe needle body, and is provided with a buckling body which can be buckled with the first buckling position on the probe fixing seat so as to enable the current probe needle body to be in the extending state or buckled with the second buckling position so as to enable the current probe needle body to be in the retracting state;
the first elastic piece is sleeved on the periphery of the current probe sleeve, one end of the first elastic piece is connected with the top of the probe fixing seat, and the elastic force of the first elastic piece drives the current probe sleeve to overcome self gravity and enable the buckle body to be buckled on the first clamping position or the second clamping position.
2. The probe module of claim 1, wherein the sliding groove structure is a through groove arranged on the probe mounting frame and through which a groove bottom is communicated, the probe assembly further comprises a fixed top plate sleeved on the periphery of the current probe sleeve and abutted against top walls of two opposite sides of the through groove, the probe fixing seat is opposite to the fixed top plate, a fixed bottom plate abutted against bottom walls of two opposite sides of the through groove is arranged at one end of the fixed top plate, the probe mounting frame is arranged on the fixed bottom plate, a positioning pin is arranged on the fixed bottom plate, and a plurality of positioning holes corresponding to the positioning pin are arranged on the bottom wall of the probe mounting frame.
3. The probe module as claimed in claim 2, wherein a hook is connected to the fixing base for holding the probe fixing base to pull the positioning pin out of the positioning hole.
4. The probe module of claim 1, wherein the probe is a temperature probe.
5. The probe module of claim 4, wherein a clamping groove is formed on an inner wall of the probe fixing seat, and the temperature probe comprises:
the temperature probe mounting seat is fixedly connected to the probe fixing seat, and one end of the temperature probe mounting seat extends out of the through hole in the probe fixing seat;
the temperature probe needle body is movably connected to the temperature probe mounting seat along the axial direction of the temperature probe needle body, one end of the temperature probe needle body is provided with a lower limiting block which can be embedded into the clamping groove to enable the temperature probe needle body to be in the retraction state, and the other end of the temperature probe needle body is provided with an upper limiting block which can be abutted against the temperature probe mounting seat to enable the temperature probe needle body to be in the extension state;
the second elastic piece is sleeved on the periphery of the temperature probe needle body, and when the lower limiting block of the temperature probe needle body is separated from the clamping groove of the probe fixing seat, the elastic force of the lower limiting block drives the temperature probe needle body to move from the retraction state to the extension state.
6. The probe module of claim 5, wherein the sliding groove structure is a T-shaped sliding groove formed in a side wall of the probe mounting frame, and a T-shaped clamping block slidably mounted in the T-shaped sliding groove is connected to the probe fixing seat.
7. A modular lithium battery testing device, characterized in that, comprises the probe module of any one of claims 1-6.
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| CN114878877A (en) * | 2022-06-02 | 2022-08-09 | 中国农业大学 | Probe card and wafer testing method |
| CN115032539B (en) * | 2022-08-09 | 2023-05-23 | 江苏时代新能源科技有限公司 | Test equipment |
| TWI827269B (en) * | 2022-09-21 | 2023-12-21 | 致茂電子股份有限公司 | Detection device and probe module thereof |
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Denomination of invention: Probe module and modular lithium battery testing device Effective date of registration: 20210930 Granted publication date: 20210115 Pledgee: China Co. truction Bank Corp Dongguan branch Pledgor: Guangdong Hengyi Energy Technology Co.,Ltd. Registration number: Y2021980010342 |
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