CN221102258U - Battery box and gas meter with battery box - Google Patents

Abstract

The utility model relates to a battery box and a gas meter with the battery box, comprising a battery bin, wherein a containing cavity for containing a battery is formed in the battery bin; the locking device comprises a clamping part and a locking part; the clamping part is assembled on the battery cover, and the locking part is assembled on the battery bin; the battery bin and the battery cover are detachably connected through the cooperation of the clamping part and the locking part; the inner side of the battery cover is provided with a positive plate and a negative plate; the bottom of the battery bin is provided with a duplex electrode plate; the positive electrode plate and the negative electrode plate are arranged corresponding to the double electrode plates; the utility model has simple and reasonable structure, the battery compartment and the battery cover are sealed by the sealing ring, the sealing ring is made of silica gel, when the battery cover is closed, the sealing ring is deformed by pressure loss, so that the sealing effect is achieved, the waterproof grade can reach IP66 or above, and the service life of the battery box is prolonged.

Description

Battery box and gas meter with battery box

Technical Field

The utility model belongs to the technical field of gas meters, and particularly relates to a battery box and a gas meter with the battery box.

Background

The intelligent gas meter converts mechanical readings into electronic readings, and then the functions of background settlement, valve control, reporting and the like are realized through the intelligent control part, if water is fed into the intelligent control part, the gas meter cannot be normally used, more and more gas meters are currently selected to be installed outdoors, so the waterproof performance of the intelligent gas meter shell is particularly important; the waterproof performance of the battery compartment is achieved through the water guide groove or the sealing ring between the face cover and the door cover in the current market, the household gas meter is generally arranged at a high position or below the water guide groove, a user is extremely inconvenient to ascend or bend down to replace when replacing the battery, the situation that the door cover is usually not closed or forgets to close after the battery is replaced, the battery and the battery pole piece are directly leaked in the air, oxidation corrosion of the battery piece can be caused due to the fact that the battery is wet and liquid leakage of the battery is caused, particularly, the gas meter installed in coastal areas and outdoors is serious, after-sales maintenance is troublesome, the shell needs to be removed for replacement, the operation is inconvenient and the required cost is high, after-sales replacement is facilitated by a part of gas companies in the form of a replaceable battery box, the problem still exists, the problem is not solved, and the experience of the user is rapidly reduced due to frequent replacement.

In view of the above-described problems, improvements are needed.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art, and provides the battery box and the gas meter with the battery box, which have the advantages of simple structure, ingenious design, good sealing performance, convenience in battery replacement, convenience in after-sale maintenance and low repair cost.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the battery box comprises a battery bin, a containing cavity for containing a battery is formed in the battery bin, one side of the battery bin is connected with a battery cover, and the battery bin is clamped with the battery cover through a locking device; the locking device comprises a clamping part and a locking part; the clamping part is assembled on the battery cover, and the locking part is assembled on the battery bin; the battery bin and the battery cover are detachably connected through the cooperation of the clamping part and the locking part; the inner side of the battery cover is provided with a positive plate and a negative plate; the bottom of the battery bin is provided with a duplex electrode plate; the positive electrode plate and the negative electrode plate are arranged corresponding to the double electrode plates.

As a preferable scheme of the utility model, a mounting groove is formed in the circumferential direction of the inner side of the bottom of the battery cover, a sealing ring is assembled in the mounting groove, a convex rib is circumferentially arranged at the top of the battery compartment corresponding to the mounting groove, the battery cover is assembled on the battery compartment, and the convex rib on the battery compartment abuts against and presses the sealing ring.

As a preferable scheme of the utility model, the convex rib is of a structure with a wide bottom and a narrow top, and the top of the convex rib is arc-shaped.

As a preferable scheme of the utility model, an upper pole piece fixing bracket is arranged on the battery cover; the positive electrode plate and the negative electrode plate are respectively assembled between the battery cover and the upper electrode plate fixing bracket; the bottom of the battery compartment is provided with a lower pole piece fixing bracket, and the double electrode pole piece is assembled between the battery compartment and the lower pole piece fixing bracket.

As a preferable scheme of the utility model, the lock catch part comprises a lower positioning frame, and a spring and a pressing plate are assembled in the positioning frame; the spring is abutted on the pressing plate, and a locking plate which is matched and clamped with the clamping part is fixedly arranged at one end of the pressing plate.

As a preferable scheme of the utility model, the locking plate comprises locking blocks, the locking blocks are distributed along the length direction of the pressing plate, the side surfaces of the tops of the locking blocks are provided with protrusions, and the upper surfaces of the protrusions are inclined surfaces.

As a preferable scheme of the utility model, the clamping part comprises an upper positioning frame corresponding to the lower positioning frame, a limiting groove is formed in the upper positioning frame, when the battery cover is assembled on the battery compartment, the bulge on the locking part is abutted against the limiting groove and used for locking the battery cover on the battery compartment, and when the battery cover is separated from the battery compartment, the bulge on the locking part is separated from the limiting groove.

As a preferable scheme of the utility model, a supporting frame for clamping the battery is arranged at the bottom of the battery bin, and the supporting frame is positioned in the accommodating cavity.

As a preferable scheme of the utility model, the supporting frame is positioned in the middle of the battery compartment, and the height of the supporting frame is 1/2-1/3 of the height of the battery compartment.

As a preferable mode of the utility model, the supporting frame has a cross-shaped structure, and the width of the supporting frame increases in sequence along the insertion direction of the battery.

A gas meter with a battery box comprises a base, wherein the battery box is detachably assembled in the base.

As a preferable scheme of the utility model, a groove is formed in the base, the battery box is arranged in the groove, and the base is rotatably connected with the door cover.

As a preferable scheme of the utility model, the base is provided with the limiting plate which is arranged in an annular mode, and the door cover is correspondingly provided with the mounting plate which is arranged in an annular mode, and when the door cover is connected with the base, the mounting plate is assembled on the inner side of the limiting plate.

As a preferable scheme of the utility model, the door cover is clamped with the base through a limiting mechanism.

As a preferable scheme of the utility model, the limiting mechanism comprises a connecting block, a limiting buckle is fixedly arranged at the end part of the connecting block, a positioning buckle is fixedly arranged at the end part of the positioning block on a base, a positioning hole is formed on one side, close to the positioning block, of the base, and when the door cover is connected with the base, the limiting buckle on the connecting block is in adaptive clamping connection with the positioning buckle on the positioning block, and the end part of the limiting buckle extends into the positioning hole.

As a preferable scheme of the utility model, the outer side of the door cover and the limiting plate of the base are arranged on the same vertical plane, and the two sides of the limiting plate are provided with concave parts for facilitating the opening or closing of the door cover.

The beneficial effects of the utility model are as follows:

1. The utility model has simple and reasonable structure, the battery compartment and the battery cover are sealed by the sealing ring, the sealing ring is made of silica gel, when the battery cover is closed, the sealing ring is deformed by pressure loss, so that the sealing effect is achieved, the waterproof grade can reach IP66 or above, and the service life of the battery box is prolonged.

2. The utility model has ingenious design, and the battery box can be detachably assembled in the base of the gas meter, so that the whole battery box can be conveniently replaced.

3. The battery compartment and the battery cover are limited and locked through the locking device, wherein the locking device comprises a clamping part and a locking part; the clamping structure through the clamping part and the locking part is used for limiting, wherein the pressing plate is propped against the spring, so that the problem that the pressing plate is not tripped due to vibration is solved, the sealing reliability of the battery box is ensured, the damage risk of the battery piece is reduced, the service life of the battery box is prolonged, and even if a user forgets to close the door cover after replacing the battery, the independent waterproof sealing performance of the battery box can also ensure the working environment of the battery and the electrode piece.

Drawings

FIG. 1 is a schematic diagram of an assembled structure of a battery case and a gas meter according to an embodiment of the present utility model;

FIG. 2 is a front view of a battery case according to an embodiment of the present utility model;

FIG. 3 is a view showing an opened state of a battery case according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a battery case according to an embodiment of the present utility model;

FIG. 5 is a partially exploded cross-sectional view of a battery compartment according to an embodiment of the present utility model;

fig. 6 is a rear view of a battery cover according to an embodiment of the present utility model;

FIG. 7 is an enlarged view of part of the A-direction of FIG. 5 according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a battery cover according to an embodiment of the present utility model;

Reference numerals: the battery pack comprises a battery compartment 1, a battery cover 2, a positive plate 3, a negative plate 4, an upper pole piece fixing support 5, a lower pole piece fixing support 6, a clamping part 7, a locking device 8, a locking part 9, a base 10, a groove 11, a door cover 12, a limiting plate 13, an inner concave part 13-1, a mounting plate 14, a positioning block 15, a positioning buckle 16, a positioning hole 17, a double electrode plate 18, a convex rib 19, an arc 19-1, a limiting mechanism 20, a connecting block 21, a limiting buckle 22, a mounting groove 23, a sealing ring 24, a supporting frame 25, a waterproof plug 26, a wire passing rubber plug 27, an upper positioning frame 70, a limiting groove 71, a lower positioning frame 90, a spring 91, a pressing plate 92, a locking plate 93, a locking block 94, a protrusion 95, an inclined surface 96, a battery box 100 and a containing cavity 200.

Detailed Description

The embodiments of the present utility model will be described in detail below.

Examples:

As shown in fig. 2-8, the battery box comprises a battery compartment 1, wherein an accommodating cavity 200 for accommodating a battery is formed in the battery compartment 1, one side of the battery compartment 1 is connected with a battery cover 2, and the battery compartment 1 is clamped with the battery cover 2 through a locking device 8; the locking device 8 comprises a clamping part 7 and a locking part 9; wherein, the clamping part 7 is assembled on the battery cover 2, and the locking part 9 is assembled on the battery compartment 1; the battery compartment 1 and the battery cover 2 are detachably connected through the cooperation of the clamping part 7 and the locking part 9; the inner side of the battery cover 2 is provided with a positive plate 3 and a negative plate 4; the bottom of the battery compartment 1 is provided with a duplex electrode plate 18; the positive electrode plate 3 and the negative electrode plate 4 are arranged corresponding to the double electrode plate 18.

The battery cover 2 is provided with an upper pole piece fixing bracket 5; the positive electrode plate 3 and the negative electrode plate 4 are respectively assembled between the battery cover 2 and the upper electrode plate fixing bracket 5; the bottom of the battery compartment 1 is provided with a lower pole piece fixing bracket 6, and a double electrode piece 18 is assembled between the battery compartment 1 and the lower pole piece fixing bracket 6; the lower pole piece fixing bracket 6 is fixed with 2 double electrode pieces 18 which are staggered with the upper pole piece fixing bracket 5 and are arranged at the bottom of the battery compartment 1, so that 4 batteries can be connected in series; the positive plate 3 and the negative plate 4 are provided with connecting wires, the connecting wires penetrate out of the top holes of the battery cover 2 through the wire passing rubber plug 27, the wire passing rubber plug 27 and the battery cover 2 play an interference sealing role, the tail end of each wire is provided with a waterproof plug-in 26 which is used for being connected with an intelligent control part of the gas meter, and the gas meter is convenient to replace in the later period.

The inner side circumference of the bottom of the battery cover 2 is provided with a mounting groove 23, a sealing ring 24 is arranged in the mounting groove 23, a convex rib 19 is circumferentially arranged at the top of the battery compartment 1 correspondingly, the battery cover 2 is arranged on the battery compartment 1, the convex rib 19 on the battery compartment 1 abuts against and presses the sealing ring 24, and the battery cover 2 is sealed when being turned over and the battery compartment 1 is closed.

The utility model has simple and reasonable structure, the battery compartment 1 and the battery cover 2 are sealed by the sealing ring, the sealing ring is made of silica gel, when the battery cover is closed, the sealing ring is deformed by pressure loss to achieve the sealing effect, the waterproof grade can reach IP66 or above, and the service life of the battery box is prolonged.

The convex rib 19 is of a structure with a wide bottom and a narrow top, so that stress is concentrated more in the extrusion process of the convex rib 19 and the sealing ring 24, the assembly efficiency and the tightness between the battery compartment 1 and the battery cover 2 are improved, and meanwhile, the top of the convex rib 19 forms an arc 19-1; the stress concentration is improved, meanwhile, the damage of the end part of the convex rib 19 to the sealing ring 24 is avoided, the arc 19-1 is arranged to increase the stress area of the convex rib 19 and the sealing ring 24, and the service life of the sealing ring 24 is prolonged.

The locking part 9 comprises a lower positioning frame 90, and a spring 91 and a pressing plate 92 are assembled in the positioning frame 90; the spring 91 is abutted against the pressing plate 92, and a locking plate 93 which is matched and clamped with the clamping part 7 is fixedly arranged at one end of the pressing plate 92; specifically, the clamping portion 7 includes an upper positioning frame 70 corresponding to the lower positioning frame 90, a limiting groove 71 is formed in the upper positioning frame 70, when the battery cover 2 is assembled on the battery compartment 1, a protrusion 95 on the locking portion 9 abuts against the limiting groove 71, and is used for locking the battery cover 2 on the battery compartment 1, and when the battery cover 2 is separated from the battery compartment 1, the protrusion 95 on the locking portion 9 is separated from the limiting groove 71.

The locking plate 93 comprises locking blocks 94, the locking blocks 94 are distributed along the length direction of the pressing plate 92, protrusions 95 are arranged on the side faces of the tops of the locking blocks 94, and the upper surfaces of the protrusions 95 are inclined faces 96;

The arrangement of the locking plate 93 is beneficial to enhancing the stability of the locking part 9 and avoiding damage; on the one hand, the elasticity of the locking block 94 can be reduced, and the rigidity of the locking block 94 is increased, so that the structure of the locking block 94 is more stable, the locking block 94 is prevented from generating amplitude vibration, and the service life is prolonged; on the other hand, the locking block 94 is arranged along the length direction of the pressing plate 92, so that the locking block 94 can keep certain elasticity, and the locking block 94 can be elastically deformed under the extrusion of the clamping part 7 and achieve the purpose of locking through elastic deformation.

The latch plate 93 can block the joint portion to realize firm connection, the setting of inclined plane 96 can play the effect of direction, makes joint portion 7 when cooperating with latch plate 93, can follow this inclined plane 96 downwardly moving, and extrudees the outside skew in upper portion of latch plate 94, thereby makes joint portion 7 can be smooth, convenient card in the below of protruding 95, realizes the detachable connection of two, makes the connection process more laborsaving on the one hand, on the other hand is difficult to damage joint portion 7 and hasp portion 9.

The pressing plate 92 is connected with the battery compartment 1 through a middle rotating shaft, and a spring 91 is arranged between the pressing plate 92 and the battery compartment, so that the pressing plate 92 can realize up-and-down reciprocating motion; the battery cover 2 and the battery compartment 1 are connected in a hinge flip mode, when the battery cover 2 is rotated until the battery cover 2 is closed, the battery cover 2 and the battery compartment 1 are firmly fixed by the pressing plate 92, the battery cover 2 and the battery compartment 1 cannot be easily separated under the action of the spring 91, the tail end of the pressing plate 92 is slightly pressed, and the locking plate 93 is tilted to separate the battery cover 2 from the battery compartment 1.

The battery compartment and the battery cover are limited and locked through the locking device, wherein the locking device comprises a clamping part and a locking part; the clamping structure through the clamping part and the locking part is used for limiting, wherein the pressing plate is propped against the spring, so that the problem that the pressing plate is not tripped due to vibration is solved, the sealing reliability of the battery box is ensured, the damage risk of the battery piece is reduced, the service life of the battery box is prolonged, and even if a user forgets to close the door cover after replacing the battery, the independent waterproof sealing performance of the battery box can also ensure the working environment of the battery and the electrode piece.

A supporting frame 25 for clamping the battery is arranged at the bottom of the battery compartment 1, and the supporting frame 25 is positioned in the accommodating cavity 200; the supporting frame 25 is positioned in the middle of the battery compartment 1, and the height of the supporting frame 25 is 1/2-1/3 of the height of the battery compartment 1; in this embodiment, the height of the supporting frame 25 is 1/2 of the height of the battery compartment 1.

The supporting frame 25 has a cross-shaped structure, and the width of the supporting frame 25 is sequentially increased along the insertion direction of the battery; so arranged, the support frame 25 can realize the support of the battery, and the problem of loosening and shaking does not occur; in addition, adopt the support frame 25 that is cross structure can play the guide effect when the battery is assembled, improve the assembly efficiency of battery, the battery case that this scheme provided, not only simple structure, compactness can effectively reduce cost, and battery case 200 is convenient, reliable with being connected of gas table moreover, more satisfies market demand.

As shown in fig. 1, there is provided a gas meter with a battery box, comprising a base 10, wherein a battery box 100 is detachably assembled in the base 10, a groove 11 is formed in the base 10, the battery box 100 is arranged in the groove 11, and a door cover 12 is rotatably connected to the base 10; the groove 11 is isolated from the intelligent control part, the periphery of the cavity of the intelligent control part is completely sealed by gluing, so that even if water enters the cavity of the battery box, the intelligent control part is not influenced, the intelligent control end is led out into the cavity of the battery box through a lead, and the end part of the lead is provided with a waterproof plug-in (female head) connected with a waterproof plug-in (male head) on the battery box; the battery box is arranged in the cavity of the face cover, if the battery box is damaged, the waterproof plug-in can be directly pulled out for replacement, the replacement is convenient, and the after-sale cost is low; when the battery is replaced, a user can pull out the waterproof plug and take out the battery box to replace the battery, and the waterproof plug can be inserted back after the battery is replaced, so that the battery can be normally used; the utility model has ingenious design, and the battery box can be detachably assembled in the base of the gas meter, so that the whole battery box can be conveniently replaced.

The battery in the battery case 100 is communicated through the upper electrode plate and the lower electrode plate, when the battery cover 2 is turned over and closed, the electrode plate at the upper end is fully contacted with the 4 battery to form conduction, the battery case supplies power to the intelligent control part at the moment, the pressing plate 92 is slightly pressed, the battery cover can be sprung open due to the spring on the negative electrode plate, the electrode plate cannot be fully contacted with the 4 batteries and cannot form conduction, at the moment, the intelligent part is in a power-off valve-closing state, the situation that a user leaks to close and forgets to close the battery cover is effectively avoided, the independent sealing performance of the battery case is ensured, the battery is more convenient to replace, the old battery is only required to be opened, the new battery is sequentially assembled, and the battery cover is covered.

The battery cover and the battery compartment are sealed through the sealing ring, the sealing ring is made of silica gel, when the battery cover is closed, the sealing ring is deformed to enable the battery cover to achieve a sealing effect, the waterproof grade can reach IP66 and above, the battery cover and the battery compartment are limited through a buckle structure arranged on the locking device 8, a spring is further arranged in the pressing plate 92, the pressing plate 92 can not trip due to vibration, the sealing reliability of the battery box is guaranteed, the damage risk of the battery piece is reduced, the service life of the battery box is prolonged, and even if a user forgets to close the door cover after replacing the battery, the independent waterproof sealing performance of the battery box can also guarantee the working environment of the battery and the electrode piece.

The base 10 is formed with a limiting plate 13 arranged in an annular shape, and correspondingly, the door cover 12 is formed with a mounting plate 14 arranged in an annular shape, and when the door cover 12 is connected with the base 10, the mounting plate 14 is assembled on the inner side of the limiting plate 13.

The door cover 12 is clamped with the base 10 through a limiting mechanism 20; specifically, the limiting mechanism 20 comprises a connecting block 21, a limiting buckle 22 is fixedly arranged at the end part of the connecting block 21, a positioning block 15 is fixedly arranged on the base 10, a positioning buckle 16 is fixedly arranged at the end part of the positioning block 15, a positioning hole 17 is formed on one side, close to the positioning block 15, of the base 10, and when the door cover 12 is connected with the base 10, the limiting buckle 22 on the connecting block 21 is in fit and clamping connection with the positioning buckle 16 on the positioning block 15, and the end part of the limiting buckle 22 stretches into the positioning hole 17.

The outer side of the door cover 12 and the limiting plate 13 of the base 10 are arranged on the same vertical plane, and concave parts 13-1 used for facilitating the opening or closing of the door cover 12 are formed on two sides of the limiting plate 13; the recess 13-1 is provided to facilitate opening or closing of the door 12.

A door cover 12 is hinged to the base 10 for closing said recess 11. The battery box can be stored in the gas meter, so that the purposes of dust prevention and internal device protection can be achieved, and the door cover 12 is convenient to open for replacing the battery box.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals are used more herein: the battery pack 1, the battery cover 2, the positive electrode sheet 3, the negative electrode sheet 4, the upper pole piece fixing support 5, the lower pole piece fixing support 6, the clamping part 7, the locking device 8, the locking part 9, the base 10, the groove 11, the door cover 12, the limiting plate 13, the concave part 13-1, the mounting plate 14, the positioning block 15, the positioning buckle 16, the positioning hole 17, the double electrode sheet 18, the convex rib 19, the arc 19-1, the limiting mechanism 20, the connecting block 21, the limiting buckle 22, the mounting groove 23, the sealing ring 24, the supporting frame 25, the waterproof plug 26, the wire passing rubber plug 27, the upper positioning frame 70, the limiting groove 71, the lower positioning frame 90, the spring 91, the pressing plate 92, the locking plate 93, the locking block 94, the protrusion 95, the inclined surface 96, the battery box 100, the accommodating cavity 200 and other terms are not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims (10)

1. The battery case, its characterized in that: the battery box comprises a battery box (1), wherein a containing cavity (200) for containing a battery is formed in the battery box (1), one side of the battery box (1) is connected with a battery cover (2), and the battery box (1) is clamped with the battery cover (2) through a locking device (8); the locking device (8) comprises a clamping part (7) and a locking part (9); the clamping part (7) is assembled on the battery cover (2), and the locking part (9) is assembled on the battery bin (1); the battery bin (1) and the battery cover (2) are detachably connected through the matching of the clamping part (7) and the locking part (9); the inner side of the battery cover (2) is provided with a positive plate (3) and a negative plate (4); the bottom of the battery bin (1) is provided with a duplex electrode plate (18); the positive plate (3) and the negative plate (4) are arranged corresponding to the double electrode plates (18).

2. The battery case according to claim 1, wherein: the battery cover (2) is characterized in that a mounting groove (23) is formed in the circumference of the inner side of the bottom of the battery cover (2), a sealing ring (24) is assembled in the mounting groove (23), a convex rib (19) is circumferentially distributed at the top of the battery compartment (1), the battery cover (2) is assembled on the battery compartment (1), and the convex rib (19) on the battery compartment (1) abuts against and presses the sealing ring (24).

3. The battery case according to claim 2, wherein: the convex rib (19) is of a structure with a wide bottom and a narrow top, and the top of the convex rib (19) is in an arc shape (19-1).

4. The battery case according to claim 1, wherein: an upper pole piece fixing bracket (5) is arranged on the battery cover (2); the positive plate (3) and the negative plate (4) are respectively assembled between the battery cover (2) and the upper plate fixing bracket (5); the bottom of the battery compartment (1) is provided with a lower pole piece fixing bracket (6), and the double electrode pole piece (18) is assembled between the battery compartment (1) and the lower pole piece fixing bracket (6).

5. The battery case according to claim 1, wherein: the lock catch part (9) comprises a lower positioning frame (90), and a spring (91) and a pressing plate (92) are assembled in the positioning frame (90); the spring (91) is abutted on the pressing plate (92), and a locking plate (93) which is matched and clamped with the clamping part (7) is fixedly arranged at one end of the pressing plate (92).

6. The battery case according to claim 5, wherein: the locking plate (93) comprises locking blocks (94), the locking blocks (94) are distributed along the length direction of the pressing plate (92), protrusions (95) are arranged on the side faces of the tops of the locking blocks (94), and the upper surfaces of the protrusions (95) are inclined faces (96).

7. The battery case according to claim 1, wherein: the clamping part (7) comprises an upper positioning frame (70) corresponding to the lower positioning frame (90), a limiting groove (71) is formed in the upper positioning frame (70), when the battery cover (2) is assembled on the battery compartment (1), a protrusion (95) on the locking part (9) is abutted against the limiting groove (71) and used for locking the battery cover (2) on the battery compartment (1), and when the battery cover (2) is separated from the battery compartment (1), the protrusion (95) on the locking part (9) is separated from the limiting groove (71); the bottom of the battery bin (1) is provided with a supporting frame (25) for clamping the battery, and the supporting frame (25) is positioned in the accommodating cavity (200).

8. The battery pack according to claim 7, wherein: the supporting frame (25) is positioned in the middle of the battery compartment (1), and the height of the supporting frame (25) is 1/2-1/3 of the height of the battery compartment (1); the support frame (25) is of a cross-shaped structure, and the width of the support frame (25) is sequentially increased along the insertion direction of the battery.

9. A gas meter with battery box, characterized in that: comprising a base (10), wherein a battery box (100) is detachably assembled in the base (10), and the battery box is a battery box as claimed in any one of claims 1 to 8; a groove (11) is formed in the base (10), the battery box (100) is arranged in the groove (11), and a door cover (12) is connected to the base (10) in a rotating mode.

10. A gas meter with a cell according to claim 9, wherein: a limiting plate (13) which is annularly arranged is formed on the base (10), and a mounting plate (14) which is annularly arranged is correspondingly formed on the door cover (12), and when the door cover (12) is connected with the base (10), the mounting plate (14) is assembled on the inner side of the limiting plate (13).