CN109613350A - Battery protecting apparatus Auto-Test System - Google Patents

Battery protecting apparatus Auto-Test System Download PDF

Info

Publication number
CN109613350A
CN109613350A CN201811331826.0A CN201811331826A CN109613350A CN 109613350 A CN109613350 A CN 109613350A CN 201811331826 A CN201811331826 A CN 201811331826A CN 109613350 A CN109613350 A CN 109613350A
Authority
CN
China
Prior art keywords
circuit board
strip
groove body
plate
main control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201811331826.0A
Other languages
Chinese (zh)
Other versions
CN109613350B (en
Inventor
王彦兵
黄星云
刘江涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SGS-CSTC STANDARDS TECHNICAL SERVICES Co Ltd
Original Assignee
SGS-CSTC STANDARDS TECHNICAL SERVICES Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SGS-CSTC STANDARDS TECHNICAL SERVICES Co Ltd filed Critical SGS-CSTC STANDARDS TECHNICAL SERVICES Co Ltd
Priority to CN201811331826.0A priority Critical patent/CN109613350B/en
Publication of CN109613350A publication Critical patent/CN109613350A/en
Application granted granted Critical
Publication of CN109613350B publication Critical patent/CN109613350B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses a kind of battery protecting apparatus Auto-Test Systems; it include: cabinet body; the shelf of multiple-layer horizontal is provided with inside it from top to bottom, circuit board fixing device is provided on middle layer shelf, the circuit board fixing device includes: groove body, two movable plates and top plate etc.;Main control module circuit board, one end are connect with the narrow bottom surface for the strip block that a section is isosceles trapezoid, and one end that the main control module circuit board is connected with strip block can be inserted between two movable plates;Connecting terminal is set on lowest level shelf, and to connect mesuring battary protective device, the connecting terminal is connect with the main control module circuit board;Wherein, the main control module circuit board is to be tested battery protecting apparatus to be measured by method in GB31241.Circuit board inside the present invention is directly plugged in groove body, without being screwed, convenient disassembly, and do not have to worry that screw is lost.

Description

Battery protecting apparatus Auto-Test System
Technical field
The present invention relates to testing equipment fields.It is more particularly related to which a kind of battery protecting apparatus is tested automatically System.
Background technique
Lithium battery is the important main at part of new energy industry, have that specific capacity is high, self-discharge rate is low due to lithium battery and The high advantage of cost performance, numerous enterprises are put into the research and development of lithium battery, however lithium battery is used due to its own positive and negative anodes The reason of material, needs that positive and negative pole material is avoided to contact and causes explosion, therefore needs to prevent battery from being hit in charge and discharge process It pierces into and causes battery plus-negative plate material, people are that lithium battery is equipped with battery protecting apparatus accordingly thus, and battery is protected Protection unit is required to be tested before use, to examine whether it can play a protective role to lithium battery, so battery protection Device test system also occurs together, and existing battery protecting apparatus test macro is protected by integrated circuit board regulating cell The test condition of protection unit, and general integrated circuit board is to be fixed by screws in cabinet, is needed if breaking down to collection It places under repair at circuit board, all screws under this needs to dismantle, the process is extremely cumbersome, while screw is also easy to lose.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of battery protecting apparatus Auto-Test System, internal circuit board is straight It connects and is plugged in slot, without being screwed, convenient disassembly, and do not have to worry that screw is lost.
In order to realize these purposes and other advantages according to the present invention, provides a kind of battery protecting apparatus and test automatically System, comprising:
Cabinet body, inside be provided with the shelf of multiple-layer horizontal from top to bottom, be provided with circuit board on middle layer shelf and fix Device, the circuit board fixing device include:
Groove body, is set on the shelf and opening upwards, is respectively provided on two inner walls of the groove body along its length There is the strut of a pair of of level, and two pairs of struts on the groove body inner wall are in identical height, each strut end is connected with The annulus placed vertically;
Two movable plates, the opposite end face center of a pair of each movable plate are each provided with a shaft, and the two of each movable plate Shaft is rotatably connected on respectively in the annulus on a pair of of strut, and two movable plates are obliquely installed and form the V-arrangement of opening upwards, often The upper end-face edge of one movable plate contradicts the inner wall to the groove body, and each movable plate is provided with the end face of shaft close to lower edge Place is provided with horizontal wheel shaft, an idler wheel is provided on each wheel shaft, the minimum point of the idler wheel is lower than the movable plate Lower edge;
Top plate is horizontally placed below the idler wheel, be provided between the top plate and the groove body inner bottom surface it is multiple The flexible spring of vertical direction so that the top plate always with the roller conflicting;
Wherein, two inner walls that the groove body is provided with strut are equipped with strip through-hole along the vertical direction, the strip The upper end of shape through-hole is concordant with the stroke upper limit of the top plate, the lower end of the strip through-hole and the lower travel limit of the top plate Concordantly, the top plate is respectively connected with a horizontal pressing plate respectively close to the portion end surface at two through hole, and the pressing plate is from the length It is pierced by and is extended to outside the groove body in strip through-hole;
Main control module circuit board, one end is connect with the narrow bottom surface for the strip block that a section is isosceles trapezoid, described Center spacing of the width in the wide bottom face of strip block slightly larger than two movable plates with respect to plate face, and the material of the strip block Matter is rubber, so that one end that the main control module circuit board is connected with strip block can be inserted between two movable plates;
Connecting terminal is set on lowest level shelf, to connect mesuring battary protective device, the connecting terminal with The main control module circuit board connection;
Wherein, the main control module circuit board is to be tested battery protecting apparatus to be measured by method in GB31241.
Preferably, horizontal strip protrusion, the strip protrusion are provided in the opposite plate face of two movable plates Positioned at the movable plate in the part plate face of upper end-face edge;
The groove to match with the strip protrusion is provided on the inclined-plane of the strip block.
Preferably, the cabinet floor four corners are respectively provided with a universal wheel.
Preferably, on the side wall of the cabinet body on middle layer shelf described in face and middle layer shelf between one layer of shelf Part is provided with radiator window.
Preferably, there are three the springs, the groove body bottom surface is respectively arranged at the two close end and groove body bottom surface Middle.
Preferably, wear-resistant coating is provided in the opposite plate face of two movable plates.
The present invention is include at least the following beneficial effects: by by intracorporal two movable plate of main control module circuit board insertion groove Between, so that movable plate is changed heeling condition and clamp main control module circuit board, to realize the fixation of main control module circuit board, is not required to Consider to remain screw hole in circuit board surface, be also fixed without using screw, both expanded circuit board usable area or tears open It unloads conveniently, and does not have to worry that screw is lost.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the side structure schematic diagram of main control module circuit board described in a wherein embodiment of the invention;
Fig. 2 is the side structure schematic diagram of circuit board fixing device described in a wherein embodiment of the invention;
Fig. 3 is the schematic diagram of internal structure of circuit board fixing device described in a wherein embodiment of the invention;
Fig. 4 is the external structure schematic diagram of circuit board fixing device described in a wherein embodiment of the invention;
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text Word can be implemented accordingly.
It should be noted that in the description of the present invention, term " transverse direction ", " longitudinal direction ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and is not the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention System.
As shown in figures 1-4, the present invention provides a kind of battery protecting apparatus Auto-Test System, comprising:
Cabinet body, inside be provided with the shelf of multiple-layer horizontal from top to bottom, be provided with circuit board on middle layer shelf and fix Device, the circuit board fixing device include:
Groove body 1, is set on the shelf and opening upwards, is all provided on two inner walls of the groove body 1 along its length It is equipped with the strut 2 of a pair of of level, and two pairs of struts 2 on 1 inner wall of the groove body are in identical height, each 2 end of strut It is connected with the annulus 3 placed vertically;
Two movable plates 4, the end face center that a pair of each movable plate 4 is opposite are each provided with a shaft, each movable plate 4 Two shafts are rotatably connected on respectively in the annulus 3 on a pair of of strut 2, and two movable plates 4 are obliquely installed and form the V of opening upwards Shape, the upper end-face edge of each movable plate 4 contradict the inner wall to the groove body 1, and the end face that each movable plate 4 is provided with shaft is leaned on It is provided with horizontal wheel shaft at nearly lower edge, an idler wheel 5 is provided on each wheel shaft, the minimum point of the idler wheel 5 is lower than institute State the lower edge of movable plate 4;
Top plate 6 is horizontally placed on 5 lower section of idler wheel, is provided between 1 inner bottom surface of the top plate 6 and the groove body more A spring 7 to stretch in vertical direction, the spring 7 is in compressive state so that the top plate 6 always with the idler wheel 5 It contradicts;
Wherein, two inner walls that the groove body 1 is provided with strut 2 are equipped with strip through-hole 8 along the vertical direction, the length The upper end of strip through-hole 8 is concordant with the stroke upper limit of the top plate 6, when under the upper end-face edge or movable plate 4 of the movable plate 4 When 1 inner wall of groove body is arrived in the conflict of idler wheel 5 at end, top plate 6 is resisted by idler wheel 5 and can not be moved up, and the position of top plate 6 is the top at this time The stroke upper limit of plate 6, the lower end of the strip through-hole 8 is concordant with the lower travel limit of the top plate 6, when the spring 7 compresses When to maximum, the top plate 6 can not be moved down, and the position of top plate 6 is the lower travel limit of top plate 6 at this time, the top plate 6 respectively close to Portion end surface at two through hole 8 is respectively connected with a horizontal pressing plate 9, and the pressing plate 9 is pierced by extension from the strip through-hole 8 Outside to the groove body 1;
Main control module circuit board 10, one end are connect with the narrow bottom surface for the strip block 11 that a section is isosceles trapezoid, The width in the wide bottom face of the strip block 11 is slightly larger than the center spacing of the opposite plate face of two movable plates 4, and the strip The material of block 11 is rubber, which is vulcanie, slightly elastic, so that the main control module circuit board 10 connects There is one end of strip block 11 that can be inserted between two movable plates 4;
Connecting terminal is set on lowest level shelf, to connect mesuring battary protective device, the connecting terminal with The main control module circuit board 10 connects;
Wherein, the main control module circuit board 10 is to be surveyed battery protecting apparatus to be measured by method in GB31241 It tries, the main control module in the main control module circuit board 10 is preset with over-voltage charging measurement journey by the 10th chapter content in GB31241 Sequence, overcurrent charging measurement program, under-voltage discharge test program, overload discharge test program and short-circuit test program, due to each survey The logic function of examination program is write by method in GB31241, therefore is no longer gone to live in the household of one's in-laws on getting married and chatted herein.
In use, one end that main control module circuit board 10 is connected with strip block 11 is inserted into for above-described embodiment Between two movable plates 4, since two movable plates 4 form the V-arrangement of opening upwards, therefore strip block 11 is entering two movable plates 4 It can be smoothly inserted into before centre-height.When strip block 11 enters the centre-height of two movable plates 4, due to strip block The width in the wide bottom face of body 11 is slightly larger than the center spacing of the opposite plate face of two movable plates 4, therefore needing slightly to exert a force makes strip block The position across the centre-height of two movable plates 4 of body 11, or be slightly tilted main control module circuit board 10 and make strip block 11 across the centre-height of two movable plates 4 position.When main control module circuit board 10 continues to inject downwards, due to two activities Width between plate 4 gradually becomes smaller, therefore the wide bottom edge of strip block 11 can constantly push two movable plates, 4 lower edge to two 1 inner wall of groove body of side is close, and when two movable plates 4 are after vertical state changes slope trend, top plate 6 is under the action of spring 7 It can give idler wheel 5 one torques, so that two movable plates 4 continue close to 1 inner wall of groove body, two movable plates, 4 upper end-face edge then can at this time It is close to each other, simultaneously as top plate 6 is contacted with the idler wheel 5 always under the action of spring 7,4 lower edge of movable plate to 1 inner wall of groove body, by the rolling connection between idler wheel 5 and top plate 6, avoids 4 lower edge of movable plate in top plate 6 during Upper sliding friction.After the idler wheel 5 of 4 lower end of movable plate connection, which contradicts, arrives 1 inner wall of groove body, movable plate 4 can not rotate again, and top plate 6 resist idler wheel 5 under the action of spring 7, and two movable plates, 4 upper end-face edge spacing is less than two movable plates, 4 lower edge spacing at this time, The V-arrangement that Open Side Down is formed, strip block 11 is fixed in the space that two movable plates 4 and top plate 6 are constituted, while two 4 upper end-face edge of movable plate blocks strip block respectively, carries out so that main control module circuit board 10 is fixed.It is led when needing to take out When controlling module board 10, by pressing pressing plate 9 with hand, so that top plate 6 is not contacted with idler wheel 5, movable plate 4 just restores rotation energy Power, at this point, only needing to extract main control module circuit board 10 upwards.
Between above-described embodiment is by being inserted into two movable plates 4 in groove body 1 for main control module circuit board 10, change movable plate 4 Become heeling condition and clamp main control module circuit board 10, to realize the fixation of main control module circuit board 10, dismantles main control module Circuit board 10 need to press pressing plate 9, extract main control module circuit board 10.Entire disassembly process is simple, without the concern in circuit Plate surface remains screw hole, is also fixed without using screw, has both expanded circuit board usable area or convenient disassembly, and do not have to Worry that screw is lost.
In another embodiment, horizontal strip protrusion 12, the length are provided in the opposite plate face of two movable plates 4 Strip bulge 12 is located at the movable plate 4 in the part plate face of upper end-face edge;
The groove 13 to match with the strip protrusion 12 is provided on the inclined-plane of the strip block 11.
Above-described embodiment in use, when two movable plates, 4 upper end-face edge is close to each other until touch strip block When 11 inclined-plane, strip protrusion 12, which is embedded just below in groove 13, enables two movable plates 4 tightly to clamp strip block 11, this Sample is fixed stronger.
In another embodiment, the cabinet floor four corners are respectively provided with a universal wheel so that it is convenient to which user's movement should Battery protecting apparatus Auto-Test System is to different testing locations.
In another embodiment, middle layer shelf described in face is put with one layer on middle layer shelf on the side wall of the cabinet body Part between plate is provided with radiator window, and the heat issued in such 10 course of work of main control module circuit board can be distributed in time, be kept away Exempt from that circuit board temperature is excessively high to be burnt.
In another embodiment, there are three the springs 7, be respectively arranged at 1 bottom surface of groove body at the two close end and The stress of 1 bottom surface middle of groove body, the top plate 6 described in this way is relatively uniform, and the power that top plate 6 passes to movable plate 4 is also relatively uniform, The movement of two movable plates 4 reaches unanimity just convenient for users to dismounting main control module circuit board 10.
In another embodiment, it is provided with wear-resistant coating in the opposite plate face of two movable plates 4, since two movable plates 4 are opposite Plate face need repeatedly with strip block 11 rub, in order to reduce to movable plate 4 abrasion thus movable plate 4 plate face coat Wear-resistant coating, to extend the service life of movable plate 4.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited In specific details and legend shown and described herein.

Claims (6)

1. battery protecting apparatus Auto-Test System characterized by comprising
Cabinet body, inside be provided with the shelf of multiple-layer horizontal from top to bottom, be provided with circuit board fixing device on middle layer shelf, The circuit board fixing device includes:
Groove body, is set on the shelf and opening upwards, is provided with one on two inner walls of the groove body along its length To horizontal strut, and two pairs of struts on the groove body inner wall are in identical height, and each strut end is connected with vertically The annulus of placement;
Two movable plates, the end face center that a pair of each movable plate is opposite are each provided with a shaft, two shafts of each movable plate It is rotatably connected in the annulus on a pair of of strut respectively, two movable plates are obliquely installed and are formed the V-arrangement of opening upwards, each work The upper end-face edge of movable plate contradicts the inner wall to the groove body, and the end face that each movable plate is provided with shaft is set at lower edge It is equipped with horizontal wheel shaft, an idler wheel is provided on each wheel shaft, the minimum point of the idler wheel is lower than the lower end of the movable plate Edge;
Top plate is horizontally placed below the idler wheel, is provided between the top plate and the groove body inner bottom surface multiple vertical The flexible spring in direction so that the top plate always with the roller conflicting;
Wherein, two inner walls that the groove body is provided with strut are equipped with strip through-hole along the vertical direction, and the strip is logical The upper end in hole is concordant with the stroke upper limit of the top plate, and the lower end of the strip through-hole and the lower travel limit of the top plate are flat Together, the top plate is respectively connected with a horizontal pressing plate respectively close to the portion end surface at two through hole, and the pressing plate is from the strip It is pierced by and is extended to outside the groove body in shape through-hole;
Main control module circuit board, one end are connect with the narrow bottom surface for the strip block that a section is isosceles trapezoid, the strip Center spacing of the width in the wide bottom face of shape block slightly larger than two movable plates with respect to plate face, and the material of the strip block is Rubber, so that one end that the main control module circuit board is connected with strip block can be inserted between two movable plates;
Connecting terminal is set on lowest level shelf, to connect mesuring battary protective device, the connecting terminal with it is described Main control module circuit board connection;
Wherein, the main control module circuit board is to be tested battery protecting apparatus to be measured by method in GB31241.
2. battery protecting apparatus Auto-Test System as described in claim 1, which is characterized in that the opposite plate face of two movable plates On be provided with horizontal strip protrusion, the strip protrusion is located at the movable plate close to the part plate face of upper end-face edge On;
The groove to match with the strip protrusion is provided on the inclined-plane of the strip block.
3. battery protecting apparatus Auto-Test System as described in claim 1, which is characterized in that the cabinet floor four corners It is respectively provided with a universal wheel.
4. battery protecting apparatus Auto-Test System as described in claim 1, which is characterized in that on the side wall of the cabinet body just Radiator window is provided with to the part between one layer of shelf on the middle layer shelf and middle layer shelf.
5. battery protecting apparatus Auto-Test System as described in claim 1, which is characterized in that there are three the springs, point It is not set to the groove body bottom surface at the two close end and the middle of groove body bottom surface.
6. battery protecting apparatus Auto-Test System as described in claim 1, which is characterized in that the opposite plate face of two movable plates On be provided with wear-resistant coating.
CN201811331826.0A 2018-11-09 2018-11-09 Automatic test system for battery protection device Active CN109613350B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811331826.0A CN109613350B (en) 2018-11-09 2018-11-09 Automatic test system for battery protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811331826.0A CN109613350B (en) 2018-11-09 2018-11-09 Automatic test system for battery protection device

Publications (2)

Publication Number Publication Date
CN109613350A true CN109613350A (en) 2019-04-12
CN109613350B CN109613350B (en) 2020-09-01

Family

ID=66003709

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811331826.0A Active CN109613350B (en) 2018-11-09 2018-11-09 Automatic test system for battery protection device

Country Status (1)

Country Link
CN (1) CN109613350B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709685A1 (en) * 1994-10-26 1996-05-01 GENERAL ELEKTRONIK GmbH bei MAGDEBURG Electrical measuring apparatus with battery compartment with access protection
CN102117992A (en) * 2011-03-01 2011-07-06 慈溪市公牛电器有限公司 Anti-falling socket
CN201955401U (en) * 2010-03-29 2011-08-31 刘辉国 Automatic test equipment for battery protection board
CN102360048A (en) * 2011-09-05 2012-02-22 江苏天鹏电源有限公司 Detection device for lithium ion battery protection plate
CN202404172U (en) * 2011-12-27 2012-08-29 浙江天能能源科技有限公司 Device for detecting lithium battery pack protection board
CN204076077U (en) * 2014-10-15 2015-01-07 惠州市兴源自动化设备有限公司 Battery protection plate positioning device
CN107498481A (en) * 2017-07-31 2017-12-22 无锡厚发自动化设备有限公司 A kind of clamp method of frock clamp
CN206990640U (en) * 2017-08-09 2018-02-09 福建猛狮新能源科技有限公司 A kind of lithium ion battery protecting plate detection means

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709685A1 (en) * 1994-10-26 1996-05-01 GENERAL ELEKTRONIK GmbH bei MAGDEBURG Electrical measuring apparatus with battery compartment with access protection
CN201955401U (en) * 2010-03-29 2011-08-31 刘辉国 Automatic test equipment for battery protection board
CN102117992A (en) * 2011-03-01 2011-07-06 慈溪市公牛电器有限公司 Anti-falling socket
CN102360048A (en) * 2011-09-05 2012-02-22 江苏天鹏电源有限公司 Detection device for lithium ion battery protection plate
CN202404172U (en) * 2011-12-27 2012-08-29 浙江天能能源科技有限公司 Device for detecting lithium battery pack protection board
CN204076077U (en) * 2014-10-15 2015-01-07 惠州市兴源自动化设备有限公司 Battery protection plate positioning device
CN107498481A (en) * 2017-07-31 2017-12-22 无锡厚发自动化设备有限公司 A kind of clamp method of frock clamp
CN206990640U (en) * 2017-08-09 2018-02-09 福建猛狮新能源科技有限公司 A kind of lithium ion battery protecting plate detection means

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
安桂雪: ""电动车锂电池保护板检测仪的设计"", 《中国优秀硕士学位论文全文数据库 (工程科技Ⅱ辑)》 *

Also Published As

Publication number Publication date
CN109613350B (en) 2020-09-01

Similar Documents

Publication Publication Date Title
CN109613350A (en) Battery protecting apparatus Auto-Test System
CN107991522A (en) A kind of lithium battery voltage detection device
CN212963973U (en) Fatigue test device for spring leaf
CN208060556U (en) Battery performance test dedicated test cabinet in a kind of lithium battery
CN206202952U (en) A kind of battery storing support
CN211042493U (en) Notebook computer mainboard function rapid detection electric appliance
CN209914335U (en) Electrical cabinet card formula mounting structure
CN207675903U (en) A kind of lithium battery heat resistance detection device
CN205660604U (en) Special portable screwdriver of anti -electricity -stealing
CN212960775U (en) Mobile electric power automatic monitoring terminal
CN210952902U (en) Signal generator for simulating rotary transformer
CN210247220U (en) Device for judging optical interaction behavior of display system
CN209766934U (en) Drawer type low damping switch board
CN106405426A (en) Lithium cell detection two-board-structure press machine
CN209589804U (en) A kind of slippery tester
CN207894801U (en) A kind of Multifunction emplastrum tester
CN213658101U (en) Portable thermal temperature calibrator
CN206133107U (en) A combination formula teaching slide glass for clinical laboratory
CN205429780U (en) Balanced device of monomer cell voltage
CN218382938U (en) Novel detection device
CN217133206U (en) Storage structure for PCB detection equipment display
CN208833732U (en) A kind of air detection case
CN215768496U (en) Portable atmospheric environment quality monitoring device
CN208506050U (en) A kind of CRP measuring device and analyzer
CN215901799U (en) Experiment table for physics electricity experiment for high school teaching

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant