CN211789131U - Battery box for electric energy meter - Google Patents
Battery box for electric energy meter Download PDFInfo
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- CN211789131U CN211789131U CN201922496377.1U CN201922496377U CN211789131U CN 211789131 U CN211789131 U CN 211789131U CN 201922496377 U CN201922496377 U CN 201922496377U CN 211789131 U CN211789131 U CN 211789131U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a battery box for an electric energy meter, which comprises a box body, a battery box and a battery box, wherein the box body is provided with a cavity with an open top for accommodating the battery; the box cover is arranged at the opening and used for opening or closing the opening; the first conducting strip is partially positioned in the containing cavity, the first end of the first conducting strip is used for being fixedly connected with the bottom of the battery, and the second end of the first conducting strip is positioned outside the box body; it is characterized by also comprising: and the second conducting strip is partially positioned in the containing cavity, the first end of the second conducting strip is fixedly connected with a top contact of the battery, the second end of the second conducting strip is positioned outside the box body, and the second conducting strip and the first conducting strip are locally limited in the containing cavity. The second conducting strip does not act together with the box cover, the situation that the second conducting strip is not in contact with the top contact of the battery due to the action of the box cover is prevented, and the connection is more reliable and convenient.
Description
Technical Field
The utility model belongs to the technical field of the electric energy meter, concretely relates to a battery case for electric energy meter.
Background
An external battery is usually arranged in the electric energy meter, so that the electric energy meter can be continuously powered after the system is powered down, partial functions of the electric energy meter can be continuously maintained, and the MCU can conveniently report power down events by supplying power to the main chip.
A conventional battery box, such as a battery box for an electric energy meter in the chinese utility model patent, whose patent number is ZL201821584935.9 (publication number is CN209104200U), discloses a battery box for an electric energy meter, which includes a box body that accommodates a battery and has an open upper end; the box cover is in close fit with the opening at the upper end of the box body; the method is characterized in that: be equipped with the first connecting strip that one end and battery bottom electricity are connected in the box body, the other end of first connecting strip extends to box body upper portion and buckles downwards in the box body outside and forms first contact pin, the lid inboard is equipped with the second connecting strip that one end and battery top electricity are connected, the other end of second connecting strip extends to the lid outer fringe and buckles downwards and forms the second contact pin, first contact pin and the vertical parallel arrangement of second contact pin. In the practical use process of the battery box in the patent, because the spring is arranged on the first connecting strip, in the process of covering the box cover, the spring enables the box cover to have the trend of moving towards the direction away from the box body, and the situation that the box cover is separated from the box body can occur, so that the contact of the battery is unreliable, and even the situation that the battery cannot supply power after power failure can be influenced; in addition, the second connecting strip is connected with the lid, and the second connecting strip rotates with the lid is synchronous, under the installation state of finishing, when the lid was touched, the second connecting strip can be followed the lid and moved together to make the reliability that the second connecting strip is connected reduce.
Therefore, further improvements to existing battery packs are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the current situation of above-mentioned prior art, a connect reliable and convenient battery case for electric energy meter is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a battery box for an electric energy meter comprises
The box body is provided with a cavity with an opening at the top and used for accommodating a battery;
the box cover is arranged at the opening and used for opening or closing the opening;
the first conducting strip is partially positioned in the cavity, the first end of the first conducting strip is used for being fixedly connected with a bottom contact of a battery, and the second end of the first conducting strip is positioned outside the box body;
it is characterized by also comprising:
the second conducting strip is partially positioned in the containing cavity, the first end of the second conducting strip is fixedly connected with the top of the battery, the second end of the second conducting strip is positioned outside the box body, and the second conducting strip and the first conducting strip are locally limited in the containing cavity.
In order to facilitate the subsequent insertion of the first conducting strip and the second conducting strip, an installation part is arranged on the position, close to the top, of the outer side wall of the box body, a first perforation for the second end of the first conducting strip to penetrate out and a second perforation for the second end of the second conducting strip to penetrate out are formed in the installation part, and the first perforation and the second perforation extend along the length direction of the box body.
In order to realize the positioning and installation of the first conducting strip and the second conducting strip, a first slot for containing the first conducting strip and a second slot for containing the second conducting strip are arranged on the top surface of the installation part. So, first conducting strip and the installation of second conducting strip are firm, prevent the condition of rocking to appear.
Preferably, the first slot is communicated with the first through hole, the first through hole is formed in the bottom wall of the first slot, the second slot is communicated with the second through hole, and the second through hole is formed in the bottom wall of the second slot.
In order to avoid interference generated by covering the box cover, the first conducting plate and the second conducting plate are in the state of being installed completely, the top surfaces of the first conducting plate and the second conducting plate are lower than the top surface of the installation part or the top surfaces of the first conducting plate and the second conducting plate are flush with the top surface of the installation part.
The first conductive sheet has multiple structural forms, and preferably, the first conductive sheet includes a first conductive segment, a second conductive segment, a third conductive segment and a fourth conductive segment, the first conductive segment is located at the bottom of the cavity and is used for being connected with a bottom contact of a battery, the second conductive segment extends from one end of the first conductive segment towards the opening direction, the third conductive segment extends outwards from the tail end of the second conductive segment, the fourth conductive segment extends from the tail end of the third conductive segment towards the bottom direction of the box body in a bending manner, the third conductive segment is limited in the first slot, and the fourth conductive segment partially penetrates through the first through hole.
In order to limit the second conductive segment, a containing groove for containing the second conductive segment is formed in the inner side wall of the box body, and the containing groove extends along the length direction of the box body and is consistent with the extending direction of the second conductive segment.
The second conductive sheet has various structural forms, but preferably, the second conductive sheet includes a first connecting section for fixedly connecting with a top contact of a battery, a second connecting section extending outward from the first connecting section, and a third connecting section extending from a terminal of the second connecting section and bending toward a bottom of the case, the second connecting section is partially limited in the second slot, and the third connecting section partially penetrates through the second through hole.
In order to prevent the second conducting strip from being stressed and having poor contact with the battery due to strong vibration of the electric energy meter, the second connecting section comprises a first extending section which is in plug-in fit with the second slot, a second extending section which is connected with the first connecting section and a middle section which is connected with the first extending section and the second extending section, the second extending section and the first extending section are arranged at intervals, and the second extending section is positioned below the first extending section. So, when the third linkage segment atress, avoid stress transfer to first linkage segment, then reduce the solder joint atress between battery positive terminal and the first linkage segment, avoid the bad contact phenomenon that the solder joint fracture leads to then appearing.
In a further improvement, the second extending section is provided with a bending part which is bent and extended upwards. The existence of the portion of bending avoids stress transmission to first linkage segment, then prevents that first linkage segment from moving towards the anodal end direction of keeping away from the battery to avoid the solder joint the fracture to appear and with the battery top contact bad condition.
The structure of the bending part is various, but preferably, the bending part is in an inverted U shape.
In order to realize the installation of the box cover and the box body, the top surface of the box cover is provided with a flange extending along the circumferential direction of the box cover, a convex part is arranged on the circumferential wall of the flange, correspondingly, a sliding groove in sliding fit with the convex part is arranged on the circumferential wall of the box body, the sliding groove extends along the circumferential direction of the box body, and a limiting part in clamping fit with the convex part is arranged in the sliding groove.
In order to restrict the box cover to further rotate, so that the box cover is installed in place, an extension part extending towards the direction of the box body is arranged on the box cover, the installation part is positioned on a rotation path of the box cover, the box cover is in an installation finishing state, and the extension part is abutted to the installation part.
In order to facilitate the welding fixation of the first conducting strip and the bottom contact of the battery, an opening for realizing the welding fixation of the first conducting strip and the bottom contact of the battery is formed in the bottom of the box body.
Compared with the prior art, the utility model discloses a hold the intracavity and place first conducting strip in proper order, battery and second conducting strip in the battery case for electric energy meter, the one end of first conducting strip and the bottom contact looks fixed connection of battery, the one end of second conducting strip and the top contact looks fixed connection of battery, and realize the installation of battery, above-mentioned second conducting strip does not act along with the lid, prevent that the second conducting strip from acting because of the lid and with the bad condition of battery top contact, first conducting strip, the connection of second conducting strip and battery is more reliable, and is convenient, furthermore, the structure of this battery case is more reasonable.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;
FIG. 3 is a schematic view of the structure of FIG. 1 with the lid removed;
FIG. 4 is a cross-sectional view of FIG. 1;
FIG. 5 is a schematic perspective exploded view of FIG. 1;
FIG. 6 is a schematic view of the structure of FIG. 5 at another angle;
FIG. 7 is a schematic structural view of the cartridge of FIG. 1;
FIG. 8 is a schematic view of the structure of FIG. 7 at another angle;
fig. 9 is a schematic structural view of a first conductive sheet according to the first embodiment;
fig. 10 is a schematic structural view of a second conductive sheet according to the first embodiment;
fig. 11 is a schematic structural view of the box cover of the first embodiment;
FIG. 12 is a schematic view showing the structure of the second embodiment with the lid removed;
fig. 13 is a schematic view of a structure of the second conductive sheet of fig. 12;
FIG. 14 is a schematic view showing a structure of the third embodiment with the cover removed;
fig. 15 is a schematic view of the structure of the second conductive sheet in fig. 14.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The first embodiment is as follows:
as shown in fig. 1 to 11, the battery box for the electric energy meter according to the embodiment of the present invention includes a box body 1, a box cover 2, a first conductive sheet 3, a second conductive sheet 4 and a battery 5, wherein the box cover 2 and the box body 1 are arranged from top to bottom, a top contact of the battery 5 is a positive terminal 52, and a bottom contact of the battery 5 is a negative terminal.
As shown in fig. 3 and 4, the box body 1 has a cavity 11 for accommodating the battery 5, a top of the cavity 11 is open 111, the first conductive sheet 3 is partially located in the cavity 11, a first end of the first conductive sheet 3 is used for being fixedly connected with a bottom negative terminal of the battery 5, and a second end of the first conductive sheet 3 extends out of the box body 1; the second conducting strip 4 is partially positioned in the cavity 11, a first end of the second conducting strip 4 is used for being electrically connected with a positive terminal 52 of the battery 5, a second end of the second conducting strip 4 extends out of the box body 1, and the second conducting strip 4 and the first conducting strip 3 are locally limited in the cavity 11 up and down in a state that the box cover 2 is closed to the opening 111.
As shown in fig. 9, the first conductive sheet 3 includes a first conductive segment 31, a second conductive segment 32, a third conductive segment 33, and a fourth conductive segment 34, the first conductive segment 31 is located at the bottom of the cavity 11 and is used for being connected to the negative end of the bottom of the battery 5, an opening 15 for realizing welding and fixing of the negative ends of the first conductive sheet 3 and the battery 5 is opened at the bottom of the box 1, and the opening 15 corresponds to the position of the negative end of the battery 5. The second conductive segment 32 extends upward from one end of the first conductive segment 31 toward the opening 111, the third conductive segment 33 extends outward from the end of the second conductive segment 32, and the fourth conductive segment 34 bends downward from the end of the third conductive segment 33.
For positioning the first conductive sheet conveniently, as shown in fig. 1 to 8, a mounting portion 12 is disposed on a position of the outer side wall of the box body 1 adjacent to the top portion, a first slot 121 for inserting the third conductive segment 33 therein is disposed on the top surface of the mounting portion 12, a first through hole 122 for penetrating the fourth conductive segment 34 is disposed on the bottom wall of the first slot 121, the first through hole 122 is communicated with the first slot 121, and the first through hole 122 and the second through hole 124 are both vertically disposed and extend along the length direction of the box body 1. In addition, the inner side wall of the box body 1 is provided with a containing groove 13 for containing the second conductive segment 32, and the containing groove 13 extends along the length direction of the box body 1 and is consistent with the extending direction of the second conductive segment 32, as shown in fig. 8.
As shown in fig. 3, 8 and 10, the second conductive sheet 4 includes a first connecting section 41, a second connecting section 42 and a third connecting section 43 connected in sequence, the first connecting section 41 is used for being fixedly connected with the positive terminal 52 of the battery 5, in this embodiment, the first connecting section 41 is a circular sheet adapted to the positive terminal 52 of the battery 5, the circular sheet and the positive terminal 52 of the battery are fixed by welding, and the first connecting section 41 is located above the battery 5; the second connecting section 42 extends outwards from the tail end of the first connecting section 41, and the third connecting section 43 extends from the tail end of the second connecting section 42 towards the bottom of the box body 1 in a bending manner; in order to position the second conductive plate conveniently, the mounting portion 12 is provided with a second slot 123 into which the second conductive segment 32 is inserted, a bottom wall of the second slot 123 is provided with a second through hole 124 through which the third connecting segment 43 passes, and the second slot 123 is communicated with the second through hole 124.
As shown in fig. 3, in a state where the first conductive plate 3 is partially inserted into the first slot 121 and the second conductive plate 4 is partially inserted into the second slot 123, top surfaces of the first conductive plate 3 and the second conductive plate 4 are both lower than a top surface of the mounting portion 12 or the top surfaces of the first conductive plate 3 and the second conductive plate 4 are flush with the top surface of the mounting portion 12, in this embodiment, the top surfaces of the first conductive plate 3 and the second conductive plate 4 are both lower than the top surface of the mounting portion 12, that is, are located below the top surface of the mounting portion 12, specifically, as shown in fig. 8.
As shown in fig. 1, 2, 4 to 6, the box cover 2 is disposed at the opening 111 for opening or closing the opening 111; in this embodiment, the top surface of the box cover 2 has a flange 21 extending along the circumferential direction thereof, a convex portion 211 is provided on the outer circumferential wall of the flange 21, correspondingly, a sliding groove 14 in sliding fit with the convex portion 211 is provided on the circumferential wall of the box body 1, the sliding groove 14 extends along the circumferential direction of the box body 1, a limiting portion 141 in clamping fit with the convex portion 211 is provided in the sliding groove 14, the limiting portion 141 is a protrusion provided on the bottom of the sliding groove 14, and in a state where the box cover 2 is mounted in place, the convex portion 211 of the box cover 2 is limited in a limiting space formed by the protrusion and the limiting groove. In addition, the box cover 2 is provided with an extending portion 22 extending towards the direction of the box body 1, the mounting portion is located on a rotation path of the box cover 2, and when the box cover 2 is in a mounted state, the extending portion 22 abuts against the mounting portion 12, and a positioning block 221 in an inverted T shape is arranged on a side surface of the extending portion 22 facing the mounting portion, as shown in fig. 11 in particular, correspondingly, the mounting portion 12 is provided with a positioning groove 126 adapted to the positioning block 221, as shown in fig. 5 and 7 in particular, so as to limit the box cover 2 from rotating continuously relative to the box body 1.
In order to facilitate the integral installation of the battery box, as shown in fig. 1 and 2, the lower surface of the mounting portion 12 has a positioning column 125 extending downward for inserting and positioning, and the extending direction of the positioning column 125 is the same as the extending direction of the fourth conductive segment 34, so as to facilitate the installation of the whole battery box.
The specific installation process is as follows:
firstly, inserting the third conductive segment 33 of the first conductive sheet 3 into the first slot 121, inserting the fourth conductive segment 34 through the first through hole 122, at this time, limiting the second conductive segment 32 in the accommodating groove 13 to realize the installation and positioning of the first conductive sheet 3, secondly, inserting the battery 5 into the accommodating cavity 11, at this time, contacting the negative end of the bottom of the battery 5 with the first conductive segment 31, and welding and fixing the negative end of the battery 5 with the first conductive segment 31 from the bottom opening 15 of the box body 1; then, the second conducting strip 4 is inserted into the cavity 11, at this time, the first connecting section 41 of the second conducting strip 4 is fixedly connected to the positive terminal 52 of the battery 5 by welding, the second connecting section 42 is inserted into the second slot 123, and the third connecting section 43 penetrates through the second through hole 424, so that the mounting and positioning of the second conducting strip 4 are realized.
Directional terms such as "upper", "lower", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to orientations opposite or consistent with the direction of gravity.
Example two:
fig. 12 to 13 show a second preferred embodiment of the present invention. This embodiment differs from the first embodiment described above in that: the second conductive sheets have different structures; specifically, the second connecting section 42 of the second conductive plate 4 includes a first extending section 421 inserted into the second slot 123, a second extending section 422 connected to the first connecting section 41, and a middle section 423 connecting the first extending section 421 and the second extending section 422, the second extending section 422 and the first extending section 421 are arranged at intervals, and the second extending section 422 is located below the first extending section 421. The first connecting section 41 and the second extending section 422 in this embodiment are both horizontally disposed. The structural form of the second connecting section 42 is similar to the lever principle, stress is reduced to be transmitted to the first connecting section 41 when the third connecting section 43 is stressed, the first connecting section 41 is prevented from moving towards the direction away from the positive end 52 of the battery 5, poor contact caused by the cracking of a welding point between the first connecting section and the positive end of the battery is avoided, and connection is more reliable.
Example three:
as shown in fig. 14 to 15, it is a third preferred embodiment of the present invention. This embodiment differs from the first embodiment described above in that: the second conductive sheets have different structures; specifically, the second connection section 42 of the second conductive sheet includes a first extension section 421 inserted into the second slot 123, a second extension section 422 connected to the first connection section 41, and a middle section 423 connecting the first extension section 421 and the second extension section 422, the second extension section 422 and the first extension section 421 are arranged at intervals, the second extension section 422 is located below the first extension section 421, the second extension section 422 of the second conductive sheet has a bending portion 4221 bent upward (arched upward), and the bending portion 4221 is in an inverted U shape. The existence of the bending part, when the second end (the third connecting section 43) of the second conducting strip is stressed, the stress is reduced to be transmitted to the first end (the first connecting section 41), the condition that the first connecting section 41 is in poor contact with the top contact of the battery 5 is prevented, and the connection is more reliable and convenient.
Claims (14)
1. A battery box for an electric energy meter comprises
The battery box comprises a box body (1) and a battery box, wherein the box body is provided with a top opening (111) and a containing cavity (11) for containing a battery (5);
a box cover (2) arranged at the opening (111) and used for opening or closing the opening (111);
the first conducting plate (3) is partially positioned in the accommodating cavity (11), the first end of the first conducting plate is fixedly connected with a bottom contact of the battery (5), and the second end of the first conducting plate is positioned outside the box body (1);
it is characterized by also comprising:
the second conducting strip (4) is partially positioned in the cavity (11), the first end of the second conducting strip is fixedly connected with a top contact of a battery (5), the second end of the second conducting strip is positioned outside the box body (1), and the second conducting strip (4) and the first conducting strip (3) are partially limited in the cavity (11).
2. A battery pack as claimed in claim 1, wherein: be equipped with installation department (12) on the position of the neighbouring top of lateral wall of box body (1), set up first perforation (122) that the second end that supplies first conducting strip (3) to wear out and second perforation (124) that the second end that supplies second conducting strip (4) to wear out on installation department (12), first perforation (122) and second perforation (124) are all followed the length direction of box body (1) extends.
3. A battery pack as claimed in claim 2, wherein: and a first slot (121) used for accommodating the first conducting plate (3) and a second slot (123) used for accommodating the second conducting plate (4) are formed in the top surface of the mounting part (12).
4. A battery pack as claimed in claim 3, wherein: the first slot (121) is communicated with the first through hole (122), the first through hole (122) is formed in the bottom wall of the first slot (121), the second slot (123) is communicated with the second through hole (124), and the second through hole (124) is formed in the bottom wall of the second slot (123).
5. A battery pack as claimed in claim 3, wherein: under first conducting strip (3) and second conducting strip (4) are in the installation state of finishing, the top surface of first conducting strip (3) and second conducting strip (4) all is less than the top surface of installation department (12) or the top surface of first conducting strip (3) and second conducting strip (4) with the top surface of installation department (12) flushes mutually.
6. A battery cartridge according to any one of claims 3 to 5, wherein: the first conducting strip (3) comprises a first conducting segment (31), a second conducting segment (32), a third conducting segment (33) and a fourth conducting segment (34), the first conducting segment (31) is located at the bottom of the accommodating cavity (11) and used for being connected with a bottom contact of a battery (5), the second conducting segment (32) extends from one end of the first conducting segment (31) towards the direction of the opening (111), the third conducting segment (33) extends outwards from the tail end of the second conducting segment (32), the fourth conducting segment (34) extends from the tail end of the third conducting segment (33) towards the bottom direction of the box body (1) in a bending mode, the third conducting segment (33) is limited in the first inserting groove (121), and the fourth conducting segment (34) partially penetrates out of the first through hole (122).
7. A battery pack as claimed in claim 6, wherein: and a containing groove (13) for containing the second conductive section (32) is formed in the inner side wall of the box body (1), and the containing groove (13) extends along the length direction of the box body (1) and is consistent with the extending direction of the second conductive section (32).
8. A battery pack as claimed in claim 3, wherein: the second conducting strip (4) comprises a first connecting section (41) fixedly connected with a top contact of a battery (5), a second connecting section (42) extending outwards from the first connecting section (41) and a third connecting section (43) extending from the tail end of the second connecting section (42) in a bending mode towards the bottom direction of the box body (1), the second connecting section (42) is partially limited in the second slot (123), and the third connecting section (43) partially penetrates out of the second through hole (124).
9. A battery pack as claimed in claim 8, wherein: the second connecting section (42) comprises a first extending section (421) matched with the second inserting groove (123) in an inserting mode, a second extending section (422) connected with the first connecting section (41) and a middle section (423) connected with the first extending section (421) and the second extending section (422), the second extending section (422) and the first extending section (421) are arranged at intervals, and the second extending section (422) is located below the first extending section (421).
10. A battery pack as claimed in claim 9, wherein: the second extending section (422) is provided with a bending part (4221) which is bent and extended upwards.
11. A battery pack as claimed in claim 10, wherein: the bending part (4221) is in an inverted U shape.
12. A battery pack as claimed in claim 1, wherein: the top surface of lid (2) has along its circumference flange (21) that extends, be equipped with convex part (211) on the periphery wall of flange (21), correspondingly, seted up on the periphery wall of box body (1) with convex part (211) sliding fit's spout (14), spout (14) are followed the circumference of box body (1) extends, just be provided with in spout (14) with convex part (211) looks joint complex spacing portion (141).
13. A battery pack as claimed in claim 2, wherein: have extension (22) towards box body (1) direction extension on lid (2), the installation department is located on the rotation path of lid (2), and lid (2) are in under the state that finishes of installation, extension (22) with installation department (12) offset.
14. A battery pack as claimed in claim 1, wherein: the bottom of the box body (1) is provided with an opening (15) for realizing the welding fixation of the bottom contact of the first conducting strip (3) and the battery (5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201922496377.1U CN211789131U (en) | 2019-12-31 | 2019-12-31 | Battery box for electric energy meter |
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CN201922496377.1U CN211789131U (en) | 2019-12-31 | 2019-12-31 | Battery box for electric energy meter |
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CN211789131U true CN211789131U (en) | 2020-10-27 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112952266A (en) * | 2021-01-28 | 2021-06-11 | 南华大学 | New forms of energy battery case elasticity hasp structure |
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2019
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112952266A (en) * | 2021-01-28 | 2021-06-11 | 南华大学 | New forms of energy battery case elasticity hasp structure |
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