CN216351131U

CN216351131U - Portable battery parameter measuring instrument

Info

Publication number: CN216351131U
Application number: CN202122784349.7U
Authority: CN
Inventors: 李培
Original assignee: Ningbo Peizheng Electronic Technology Co ltd
Current assignee: Ningbo Peizheng Electronic Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-04-19
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a portable battery parameter measuring instrument which comprises a shell, a display screen, an elastic structure, a fixed terminal and a movable terminal, wherein the shell comprises a detection part and an accommodating inner cavity; the movable terminal is arranged on the detection part in a sliding way through a sliding structure, so that the movable terminal can perform reciprocating translation along the length direction of the detection part; the elastic structure is respectively connected with the movable terminal and the shell or the circuit board, the circuit board is installed in the containing inner cavity, and the fixed terminal and the movable terminal are arranged oppositely. It utilizes the movable terminal portable to adapt to the battery of different length, and only place fixed terminal and movable terminal in with the battery when detecting, make the positive negative pole of battery respectively with movable terminal and fixed terminal contact can carry out the detection operation, thereby make the measurement comparatively convenient, promote the workman and carry out measuring efficiency to the battery, and small portable.

Description

Portable battery parameter measuring instrument

Technical Field

The utility model relates to the technical field of detection devices, in particular to a portable battery parameter measuring instrument.

Background

At present, a universal meter is generally adopted for detecting the battery after production is finished or for spot inspection, particularly for detecting the internal resistance of the battery, when the universal meter is detected, a user needs to manually position the battery by one hand and respectively contact two detection rods with the positive electrode and the negative electrode of the battery by the other hand, so that the detection is very inconvenient, the detection accuracy is poor, the detection efficiency is influenced, and the universal meter is large in size and inconvenient to carry.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art and provides a portable battery parameter measuring instrument, which has the following specific structure.

The utility model designs a portable battery parameter measuring instrument, which comprises a shell, a display screen, an elastic structure, a fixed terminal and a movable terminal, wherein the shell comprises a detection part and an accommodating inner cavity; the movable terminal is arranged on the detection part in a sliding way through a sliding structure, so that the movable terminal can perform reciprocating translation along the length direction of the detection part; the elastic structure is respectively connected with the movable terminal and the shell or the circuit board, the circuit board is installed in the containing inner cavity, and the fixed terminal and the movable terminal are arranged oppositely.

Preferably, the sliding structure comprises a long sliding groove arranged on the detection part, a guide strip is arranged on the inner wall of the long sliding groove, at least one part of the movable terminal is arranged in the long sliding groove, a sliding groove is arranged on one part of the side wall of the movable terminal, which is arranged in the long sliding groove, and the guide strip is correspondingly inserted into the sliding groove; the structure of the device enables the movable terminal to be stable and reliable when the movable terminal performs reciprocating translation along the length direction of the detection part.

Preferably, the movable terminal comprises a first insulating shell and a first conductive terminal, the first conductive terminal is mounted on the first insulating shell, the lower part of the first insulating shell is arranged in the long sliding groove, and the sliding groove is arranged at the lower part of the first insulating shell; the first conductive terminal comprises a first conductive sleeve installed on a first insulating shell, a first conductive mandrel arranged in the conductive sleeve and a first spring sleeved on the conductive mandrel, the conductive mandrel is sleeved with the first insulating sleeve and a second insulating sleeve, the second insulating sleeve is fixed with the conductive sleeve, a first limiting step is arranged on the inner wall of the front end of the first conductive sleeve, the first insulating sleeve is limited by the first limiting step, a second limiting step is arranged on the first conductive mandrel and is limited by the first insulating sleeve, two ends of the first spring are respectively abutted against the second insulating sleeve and the second limiting step, and the first conductive mandrel is enabled to extend out of the front end of the first conductive sleeve under the action of the first spring. The structure of the detection terminal is more reasonable, the matching degree with the battery is higher during detection, and two detection terminals which are insulated and separated from each other are realized.

Preferably, the elastic structure is arranged in the accommodating inner cavity, and two ends of the elastic structure are respectively connected with the first insulating shell and the inner wall of the accommodating inner cavity or the circuit board; the structure of the measuring instrument is hidden in the elastic structure, so that the measuring instrument is more compact in structure and more attractive.

As preferred, elastic construction's one end is provided with the lasso, its other end is provided with colludes body or inserted bar, be provided with the elongated hole that corresponds with microscler slot position that slides on the circuit board, the side that lies in the elongated hole on the circuit board is provided with the connecting hole, first insulation housing's bottom surface is provided with the connecting rod, be provided with the stopper on the connecting rod, the lasso overlaps on the connecting rod to it is spacing by the stopper, collude body or inserted bar and peg graft in the connecting hole, its structural setting makes the installation to elastic construction comparatively convenient, promote the packaging efficiency of measuring apparatu.

Preferably, the detection part comprises a positioning groove matched with the battery, the long sliding groove is arranged in the positioning groove, one end part of the positioning groove is provided with a fixed terminal, the other end part of the positioning groove is provided with a notch communicated with the long sliding groove, and the notch is matched with the first insulating shell; the arrangement of the positioning groove enables the battery to be reliably positioned during detection.

Preferably, the bottom surface of the positioning groove is provided with a long concave recess, the inner wall of the long concave recess is an arc-shaped inner wall, and the concave recess enables the battery with a smaller diameter to be matched for positioning during detection.

Preferably, the fixed terminal comprises a second insulating shell and a second conductive terminal installed on the second insulating shell, the second conductive terminal corresponds to the first conductive terminal, an installation groove is formed in the end portion of the positioning groove, at least one portion of the second insulating shell is inserted into the installation groove, a protrusion is arranged on the side wall of the second insulating shell, a recess corresponding to the protrusion is formed in the inner wall of the installation groove, or a recess is formed in the side wall of the second insulating shell, a protrusion corresponding to the recess is formed in the inner wall of the installation groove, and the protrusion is correspondingly embedded into the recess for positioning; the second conductive terminal comprises a second conductive sleeve arranged on the second insulating shell, a second conductive mandrel arranged in the second conductive sleeve and a second spring sleeved on the second conductive mandrel, the second conductive mandrel is sleeved with a third insulating sleeve and a fourth insulating sleeve, the fourth insulating sleeve is fixed with the second conductive sleeve, the inner wall of the front end of the second conductive sleeve is provided with a third limiting step, the third insulating sleeve is limited by the third limiting step, the second conductive mandrel is provided with a fourth limiting step, the fourth limiting step is limited by the third insulating sleeve, two ends of the second spring are respectively abutted against the fourth insulating sleeve and the fourth limiting step, and the second conductive mandrel extends out of the front end of the second conductive sleeve under the action of the second spring, the fixed terminals arranged in the structure are stable and reliable in installation and simple and convenient to install, the assembly efficiency of the measuring instrument is improved, and two detection terminals which are insulated and separated from each other are realized; meanwhile, the first conductive sleeve and the second conductive sleeve are respectively contacted with the anode and the cathode of the battery, and the first conductive mandrel and the second conductive mandrel are respectively contacted with the anode and the cathode of the battery, so that two-path detection of the battery is realized.

Preferably, the second insulating shell is provided with an insertion block, and the end part of the positioning groove is also provided with an insertion groove, or the second insulating shell is provided with an insertion groove, the end part of the positioning groove is also provided with an insertion block, and the insertion block is correspondingly inserted into the insertion groove for positioning; the structure of the insulating shell enables the installation and the positioning of the second insulating shell to be more stable and reliable.

Preferably, the display screen is arranged on the surface of the shell, the two corresponding sides of the accommodating inner cavity are provided with limit grooves, and two ends of the rechargeable battery are respectively positioned in the limit grooves; the shell is also provided with a concave part, a switch and a charging interface, and the long concave part, the long sliding groove and the positioning groove are all arranged in the concave part; the arrangement of the limiting groove is chargeable.

The portable battery parameter measuring instrument designed by the utility model utilizes the movable terminal to be movable, so that the portable battery parameter measuring instrument is suitable for batteries with different lengths, and only the batteries are arranged on the fixed terminal and the movable terminal during detection, so that the positive and negative electrodes of the batteries are respectively contacted with the movable terminal and the fixed terminal to carry out detection operation, thereby ensuring that the measurement is more convenient, improving the efficiency of measuring the batteries by workers, and being small in size and convenient to carry.

Drawings

FIG. 1 is a schematic view of the overall structure (one);

FIG. 2 is a schematic view of the overall structure (two);

FIG. 3 is a partial schematic view of the structure;

FIG. 4 is an exploded view (one);

FIG. 5 is an exploded view (two);

FIG. 6 is a schematic view (III) of the overall structure;

FIG. 7 is a first conductive terminal structure;

FIG. 8 is a schematic view (II) of the first conductive terminal;

FIG. 9 is a schematic view (one) of the second conductive terminal structure;

fig. 10 is a schematic view (ii) of the second conductive terminal structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

Example (b):

as shown in the drawings, the portable battery parameter measuring instrument described in the present embodiment includes a housing 1, a display screen 5, an elastic structure 7, a fixed terminal 3 and a movable terminal 2, the housing 1 includes a detection portion 100 and an accommodating cavity, and the fixed terminal 3 is mounted on the detection portion 100; the movable terminal 2 is slidably mounted on the detection part 100 through a sliding structure, so that the movable terminal 2 can perform reciprocating translation along the length direction of the detection part 100; the elastic structure 7 is respectively connected with the movable terminal 2 and the shell 1 or the circuit board 4, the circuit board 4 is arranged in the containing inner cavity, and the fixed terminal 3 and the movable terminal 2 are arranged correspondingly; based on movable terminal 2 can make the translation along detection portion 100 length direction, consequently wait to detect the battery and can arrange between movable terminal 2 and fixed terminal 3 to under the effect of elastic construction 7, make movable terminal 2 towards fixed terminal 3 direction effort, realize waiting to detect the battery and be held between movable terminal 2 and fixed terminal 3 and obtain measuring, elastic construction 7 adopts the spring.

In this embodiment, the sliding structure includes an elongated sliding slot 114 disposed in the detecting portion 100, a guiding bar 116 is disposed on an inner wall of the elongated sliding slot 114, at least a portion of the movable terminal 2 is disposed in the elongated sliding slot 114, a sliding slot 211 is disposed on a portion of a side wall of the movable terminal 2 disposed in the elongated sliding slot 114, and the guiding bar 116 is correspondingly inserted into the sliding slot 211. In order to make the movable terminal 2 slide stably and reliably in the long sliding groove 114, guide bars 116 may be respectively disposed on two corresponding inner walls of the long sliding groove 114.

Preferably, the movable terminal 2 includes a first insulating housing 21 and a first conductive terminal 22, the first conductive terminal 22 is mounted on the upper end of the front side of the first insulating housing 21, the lower portion of the first insulating housing 21 is disposed in the elongated sliding slot 114, and the sliding slot 211 is disposed on the lower portion of the first insulating housing 21; in order to match the two guide bars 116, sliding grooves 211 are respectively formed at two corresponding sides of the lower portion of the first insulating housing 21, so that the first insulating housing 21 slides in the elongated sliding groove 114 more stably.

Preferably, the first conductive terminal 22 includes a first conductive sleeve 221 mounted on the first insulating housing 21, a first conductive mandrel 222 disposed in the first conductive sleeve 221, and a first spring 23 sleeved on the first conductive mandrel 222, the first conductive mandrel 222 is sleeved with a first insulating sleeve 223 and a second insulating sleeve 224, the second insulating sleeve 224 is fixed to the first conductive sleeve 221, a first limit step 225 is disposed on an inner wall of a front end of the first conductive sleeve 221, the first insulating sleeve 223 is limited by the first limit step 225, the first conductive mandrel 222 is provided with a second limit step 226, the second limit step 226 is limited by the first insulating sleeve 223, two ends of the first spring 23 respectively abut against the second insulating sleeve 224 and the second limit step 226, and the first conductive mandrel 222 extends out of the front end of the first conductive sleeve 221 under the action of the first spring 23; wherein first conductive sleeve 221 is through locating piece 300 and the locating recess 200 cooperation location installation first insulating housing 21 in the locating hole, and the front end of first conductive sleeve 221 is conical structure, the locating hole front end of second insulating housing 21 is for conical structure, thereby it is spacing to utilize the circular cone cooperation to carry out, second conductive sleeve 321 can be by two symmetrical structure's half shell to constitute, the last rear end lock joint of first insulating housing has end cover 214, with the rear end to first insulating housing carries out the closing cap, second insulating sleeve 224 is fixed through casting glue or glue with first conductive sleeve 221.

In the present embodiment, the elastic structure 7 is disposed in the accommodating cavity, and two ends of the elastic structure 7 are connected to the first insulating housing 21 and the inner wall of the accommodating cavity or the circuit board 4, respectively.

Preferably, one end of the elastic structure 7 is provided with a ferrule 71, the other end of the elastic structure is provided with a hook body or an insertion rod 72, the circuit board 4 is provided with an elongated hole 41 corresponding to the elongated sliding groove 114, the bottom surface of the first insulating housing 21 is provided with a connecting rod 212, the connecting rod 212 correspondingly penetrates through the elongated hole 41, the connecting rod 212 is provided with a limit block 213, the ferrule 71 is sleeved on the connecting rod 212 and is limited by the limit block 213, when the circuit board 4 is located beside the elongated hole 41 and is provided with a connecting hole 44, the hook body or the insertion rod 72 is inserted into the connecting hole 44; or when the connecting hole 44 is arranged on the ferrule 71 on the inner wall of the accommodating cavity, one end of the elastic structure 7 is provided with a hook body, so that the hook body is hooked on the ferrule 71 by using the connecting sleeve, or when the connecting hole 44 is arranged on the connecting sleeve on the inner wall of the accommodating cavity, one end of the elastic structure 7 is provided with an inserting rod 72, and the inserting rod 72 is correspondingly inserted into the connecting hole 44 of the connecting sleeve for positioning.

In this embodiment, the detecting portion 100 includes a positioning groove 112 matched with the battery, a long sliding groove 114 is disposed in the positioning groove 112, a fixed terminal 3 is mounted at one end of the positioning groove 112, a notch 115 communicated with the long sliding groove 114 is disposed at one end of the positioning groove 112, and the notch 115 is matched with the first insulating housing 21; when the length of the battery is long, the notch 115 is arranged so that the rear end of the first insulating housing 21 can be inserted into the notch 115 after the first insulating housing 21 moves towards the notch 115, thereby increasing the distance between the first conductive terminal 22 and the second conductive terminal 32, and adapting to the battery to be detected with a long length for measurement.

Preferably, the bottom surface of the positioning groove 112 is provided with an elongated recess 113, and the inner wall of the elongated recess 113 is an arc-shaped inner wall.

Preferably, the fixed terminal 3 includes a second insulating housing 31 and a second conductive terminal 32 mounted on the second insulating housing 31, the second conductive terminal 32 corresponds to the first conductive terminal 22, the end of the positioning slot 112 is provided with a mounting groove 118, at least a portion of the second insulating housing 31 is inserted into the mounting groove 118, a sidewall of the second insulating housing 31 is provided with a protrusion 311, an inner wall of the mounting groove 118 is provided with a recess 128 corresponding to the protrusion 311, or a sidewall of the second insulating housing 31 is provided with a recess 128, an inner wall of the mounting groove 118 is provided with a protrusion 311 corresponding to the recess 128, and the protrusion 311 is correspondingly inserted into the recess 128 for positioning, wherein the recesses 128 may be two correspondingly arranged for the second insulating housing 31 to be stably mounted, and the protrusions 311 may also be two correspondingly arranged.

The second conductive terminal 32 includes a second conductive sleeve 321 mounted on the second insulating housing 31, a second conductive mandrel 322 disposed in the second conductive sleeve 321, and a second spring 33 sleeved on the second conductive mandrel 322, the second conductive mandrel 322 is sleeved with a third insulating sleeve 323 and a fourth insulating sleeve 324, the fourth insulating sleeve 324 is fixed to the second conductive sleeve 321, a third limit step 325 is disposed on the inner wall of the front end of the second conductive sleeve 321, the third insulating sleeve 323 is limited by the third limit step 325, the second conductive mandrel 322 is provided with a fourth limit step 326, the fourth limit step 326 is limited by the third insulating sleeve 323, two ends of the second spring 33 respectively abut against the fourth insulating sleeve 324 and the fourth limit step 326, and the second conductive mandrel 322 is extended out of the front end of the first conductive sleeve 221 under the action of the second spring 33; wherein the second conductive sleeve 321 is arranged in the positioning hole of the second insulating shell 31 through the matching and positioning of the positioning block 300 and the positioning recess 200, and the front end of the second conductive sleeve 321 is in a conical structure, and the front end of the positioning hole of the second insulating shell is in a conical structure, so that the second conductive sleeve 321 is limited by the matching of the cone, the second conductive sleeve 321 can be formed by half shells of two symmetrical structures, and the fourth insulating sleeve 324 is fixed with the second conductive sleeve 321 through pouring sealant or glue.

Preferably, the second insulating housing 31 is provided with an insertion block 312, and the end of the positioning slot 112 is further provided with an insertion slot 120, or the second insulating housing 31 is provided with an insertion slot 120, the end of the positioning slot 112 is further provided with an insertion block 312, and the insertion block 312 is correspondingly inserted into the insertion slot 120 for positioning. When the second insulating housing 31 is inserted into the mounting groove 118, the second insulating housing 31 is positioned, and the bottom surface of the positioned second insulating housing 31 is supported by the circuit board 4, so that the second insulating housing 31 is stably mounted.

In this embodiment, the rechargeable battery 6 is further included, the rechargeable battery 6 is disposed in the accommodating cavity, the display screen 5 is mounted on the surface of the housing 1, the two corresponding sides of the accommodating cavity are provided with the limiting grooves 126, and two ends of the rechargeable battery 6 are respectively positioned in the limiting grooves 126; the shell 1 is also provided with a concave part 111, a switch 8 and a charging interface 9, and a long concave 113, a long sliding groove 114 and a positioning groove 112 are all arranged in the concave part 111; the shell 1 comprises an upper shell 11 and a lower shell 12 which are matched and spliced with each other, a concave part 111 and a limiting groove 126 are arranged on the upper shell 11, six first locating sleeves 125 are arranged on the inner wall of the upper shell 11, six locating holes 42 are arranged on the circuit board 4, after the circuit board 4 is arranged in the inner cavity of the upper shell 11, the six first locating sleeves 125 respectively penetrate through the locating holes on the circuit board 4, six counter bores 121 respectively corresponding to the positions of the first locating sleeves 125 and a second locating sleeve 122 corresponding to the position of the counter bore 121 are arranged on the lower shell 12, after the second locating sleeve 122 is sleeved on the first locating sleeve 125, the end surface of the second locating sleeve 122 is abutted against the circuit board 4, and a screw penetrates through the counter bores 121 and the second locating sleeve 122 and is in threaded connection with the first locating sleeve 125, so that the circuit board 4 is also clamped and fixed after the upper shell 11 and the lower shell 12 are mutually fixed, the circuit board 4 is clamped by the second locating sleeve 122 and the locating groove 112 formed by sinking the lower shell 12, the inner wall of the lower shell 12 is provided with a support frame 124 which supports the rechargeable battery 6 to prevent the battery from shaking in the using process.

In addition, the upper shell 11 is provided with a mounting hole, and the display screen 5 is mounted in the mounting hole. The limiting groove 126 is composed of two blocking plates 127 positioned on the inner wall of the upper case 11, and the blocking plates 127 are inserted into the grooves 43 of the circuit board 4, so that the circuit board 4 is positioned.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.

Claims

1. A portable battery parameter measuring instrument is characterized by comprising a shell (1), a display screen (5), an elastic structure (7), a fixed terminal (3) and a movable terminal (2), wherein the shell (1) comprises a detection part (100) and an accommodating inner cavity, and the fixed terminal (3) is arranged on the detection part (100); the movable terminal (2) is arranged on the detection part (100) in a sliding way through a sliding structure, so that the movable terminal (2) can perform reciprocating translation along the length direction of the detection part (100); the circuit board (4) is installed in the containing inner cavity, the elastic structure (7) is respectively connected with the movable terminal (2) and the shell (1) or the circuit board, and the fixed terminal (3) is arranged opposite to the movable terminal (2).

2. The portable battery parameter measuring instrument according to claim 1, wherein the sliding structure comprises a long sliding groove (114) arranged in the detecting portion (100), a guide bar (116) is arranged on an inner wall of the long sliding groove (114), at least a part of the movable terminal (2) is arranged in the long sliding groove (114), a sliding groove (211) is arranged on a part of a side wall of the movable terminal (2) arranged in the long sliding groove (114), and the guide bar (116) is correspondingly inserted into the sliding groove (211).

3. The portable battery parameter measuring instrument according to claim 2, wherein the movable terminal (2) comprises a first insulating housing (21) and a first conductive terminal (22), the first conductive terminal (22) is mounted on the first insulating housing (21), a lower portion of the first insulating housing (21) is disposed in the elongated sliding groove (114), and the sliding groove (211) is disposed at a lower portion of the first insulating housing (21); the first conductive terminal (22) comprises a first conductive sleeve (221) arranged on the first insulating shell (21), a first conductive mandrel (222) arranged in the first conductive sleeve (221) and a first spring (23) sleeved on the first conductive mandrel (222), the first conductive mandrel (222) is sleeved with a first insulating sleeve (223) and a second insulating sleeve (224), the second insulating sleeve (224) is fixed with the first conductive sleeve (221), a first limiting step (225) is arranged on the inner wall of the front end of the first conductive sleeve (221), the first insulating sleeve (223) is limited by the first limiting step (225), a second limiting step (226) is arranged on the first conductive mandrel (222), the second limiting step (226) is limited by the first insulating sleeve (223), two ends of the first spring (23) are respectively abutted against the second insulating sleeve (224) and the second limiting step (226), the first conductive mandrel (222) is extended out of the front end of the first conductive sleeve (221) under the action of the first spring (23).

4. A portable battery parameter measuring instrument according to claim 3, wherein the elastic structure (7) is disposed in the accommodating cavity, and both ends of the elastic structure (7) are connected to the first insulating housing (21) and the inner wall of the accommodating cavity or the circuit board (4), respectively.

5. The portable battery parameter measuring instrument according to claim 4, wherein one end of the elastic structure (7) is provided with a ferrule (71), the other end of the elastic structure is provided with a hook body or an insertion rod (72), the circuit board (4) is provided with an elongated hole (41) corresponding to the elongated sliding groove (114), the circuit board (4) is provided with a connecting hole (44) beside the elongated hole (41), the bottom surface of the first insulating housing (21) is provided with a connecting rod (212), the connecting rod (212) is provided with a limiting block (213), the ferrule (71) is sleeved on the connecting rod (212) and limited by the limiting block (213), and the hook body or the insertion rod (72) is inserted into the connecting hole (44).

6. The portable battery parameter measuring instrument according to any one of claims 3 to 5, wherein the detecting portion (100) comprises a positioning groove (112) matched with the battery, an elongated sliding groove (114) is arranged in the positioning groove (112), a fixed terminal (3) is installed at one end of the positioning groove (112), a notch (115) communicated with the elongated sliding groove (114) is arranged at the other end of the positioning groove (112), and the notch (115) is matched with the first insulating shell (21).

7. The portable battery parameter measuring instrument according to claim 6, wherein the bottom surface of the positioning groove (112) is provided with an elongated recess (113), and the inner wall of the elongated recess (113) is an arc-shaped inner wall.

8. The portable battery parameter measuring instrument according to claim 6, wherein the fixed terminal (3) comprises a second insulating housing (31) and a second conductive terminal (32) mounted on the second insulating housing (31), the second conductive terminal (32) corresponds to the first conductive terminal (22), the end of the positioning slot (112) is provided with a mounting groove (118), at least a portion of the second insulating housing (31) is inserted into the mounting groove (118), the side wall of the second insulating housing (31) is provided with a protrusion (311), the inner wall of the mounting groove (118) is provided with a recess (128) corresponding to the protrusion (311), or a recess (128) is formed in the side wall of the second insulating shell (31), a protrusion (311) corresponding to the recess (128) is formed in the inner wall of the mounting groove (118), and the protrusion (311) is correspondingly embedded into the recess (128) for positioning;

the second conductive terminal (32) comprises a second conductive sleeve (321) arranged on the second insulating shell (31), a second conductive mandrel (322) arranged in the second conductive sleeve (321) and a second spring (33) sleeved on the second conductive mandrel (322), the second conductive mandrel (322) is sleeved with a third insulating sleeve (323) and a fourth insulating sleeve (324), the fourth insulating sleeve (324) is fixed with the second conductive sleeve (321), a third limiting step (325) is arranged on the inner wall of the front end of the second conductive sleeve (321), the third insulating sleeve (323) is limited by the third limiting step (325), a fourth limiting step (326) is arranged on the second conductive mandrel (322), the fourth limiting step (326) is limited by the third insulating sleeve (323), two ends of the second spring (33) respectively abut against the fourth insulating sleeve (324) and the fourth limiting step (326), and the second conductive mandrel (322) extends out of the front end of the second conductive sleeve (321) under the action of a second spring (33).

9. The portable battery parameter measuring instrument according to claim 8, wherein the second insulating housing (31) is provided with an insert (312), and the end of the positioning slot (112) is further provided with an insert (120), or the second insulating housing (31) is provided with an insert (120), and the end of the positioning slot (112) is further provided with an insert (312), and the insert (312) is correspondingly inserted into and positioned in the insert (120).

10. The portable battery parameter measuring instrument according to claim 8 or 9, wherein the first conductive terminal (22) and the second conductive terminal (32) each comprise a conductive sleeve and a conductive core shaft disposed in the conductive sleeve,

the display screen (5) is arranged on the surface of the shell (1), the two corresponding sides of the accommodating inner cavity are provided with limit grooves (126), and the two ends of the rechargeable battery (6) are respectively positioned in the limit grooves (126); still be provided with concave part (111), switch (8) and interface (9) that charge on shell (1), and microscler recessed (113), microscler sliding groove (114) and constant head tank (112) all set up in concave part (111).