CN217848159U - Battery box - Google Patents
Battery box Download PDFInfo
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- CN217848159U CN217848159U CN202221396146.9U CN202221396146U CN217848159U CN 217848159 U CN217848159 U CN 217848159U CN 202221396146 U CN202221396146 U CN 202221396146U CN 217848159 U CN217848159 U CN 217848159U
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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 provides a battery box, including box, battery, PCB face guard, liquid magnetic circuit breaker, connecting terminal, control panel and pilot lamp, the lower box includes the bottom plate, fixes first baffle, second baffle, third baffle and the fourth baffle that connects gradually on the bottom plate, the battery is located the lower box, be equipped with the switch board that connects gradually on the PCB face guard, discharge electrode, heating panel and display panel, this application technical scheme simple structure to because the volume of liquid magnetic circuit breaker, connecting terminal and control panel is less, make whole PCB panel volume less, light in weight, space utilization is high, and the battery of different electric quantities can be connected to this PCB panel, realize the general to the battery of different electric quantities.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery box.
Background
The battery box commonly applied to the existing market is complex in structure, large in size, low in space utilization rate and energy density, large in weight and not beneficial to moving.
Disclosure of Invention
An object of the utility model is to provide a battery box to solve among the prior art structure complicacy, bulky and use great problem of weight on the product.
The embodiment of the utility model provides a first aspect provides a battery box, battery box includes:
the box body comprises a box cover and a lower box body, wherein the lower box body comprises a bottom plate, a first baffle, a second baffle, a third baffle and a fourth baffle which are fixed on the bottom plate and connected in sequence;
a battery located within the lower case;
the PCB mask is provided with a switch board, a discharge board, a heat dissipation board and a display board which are connected in sequence and is arranged on the first baffle;
the liquid magnetic breaker is arranged on the back surface of the switch board, and the control end of the liquid magnetic breaker is connected with the switch on the switch board;
the connecting terminal is arranged on the back surface of the discharge plate, is electrically connected with the liquid magnetic circuit breaker and the battery, comprises two connecting rods connected with the anode and the cathode of the battery, and is positioned at the opening of the discharge plate through a connecting piece respectively connected with the two connecting rods;
a control board positioned between the heat dissipation plate and the first barrier, and electrically connected to the battery;
and the indicating lamp is positioned on the front surface of the display panel and is electrically connected with the control panel.
Furthermore, the radiating plates are provided with radiating fins which are connected in sequence.
Furthermore, a controller is arranged on the control panel and is positioned between the heat dissipation plate and the control panel.
Furthermore, the second baffle with be equipped with the hangers on the fourth baffle respectively, be equipped with the handle on the hangers.
Furthermore, a first pressing strip is arranged between the box cover and the second baffle, and a second pressing strip is arranged between the box cover and the fourth baffle.
Further, the connection terminal includes:
the base is provided with a first hollow-out area and a second hollow-out area which are arranged at intervals;
the first U-shaped copper bar is positioned in the first hollow area and comprises a first copper arm and a second copper arm which are connected together, a first through hole is formed in the first copper arm, and a second through hole is formed in the second copper arm;
the first adapter is positioned in the first U-shaped copper bar and comprises a first fixing part, a first extending part and a second extending part, the first extending part and the second extending part are fixed on the first fixing part, and the first adapter is fixed on the base through the first extending part and the second extending part;
the first connecting rod penetrates through the first through hole to be fixedly connected with the first adapter, and the head of the first connecting rod is in contact with the first copper arm;
the second connecting rod penetrates through the second through hole to be fixedly connected with the first adapter, and the head of the second connecting rod is in contact with the second copper arm;
the second U-shaped copper bar is positioned in the second hollow area and comprises a third copper arm and a fourth copper arm which are connected together, a third through hole is formed in the third copper arm, and a fourth through hole is formed in the fourth copper arm;
the second adapter is positioned in the second U-shaped copper bar and comprises a second fixing part, a third extending part and a fourth extending part, wherein the third extending part and the fourth extending part are fixed on the second fixing part;
the third connecting rod penetrates through the third through hole to be fixedly connected with the second adapter, and the head of the third connecting rod is in contact with the third copper arm;
and the fourth connecting rod penetrates through the fourth through hole to be fixedly connected with the second adapter, and the head of the fourth connecting rod is in contact with the fourth copper arm.
Further, first U type copper bar still includes:
the first copper arm and the second copper arm are respectively perpendicular to and fixedly connected with the first copper connecting part, the first copper arm and the second copper arm are arranged in parallel, and opposite through holes are formed in the first through hole and the second through hole;
the second U type copper bar still includes:
the third copper arm and the fourth copper arm are respectively perpendicular to and fixedly connected with the second copper connecting portion, the third copper arm and the fourth copper arm are arranged in parallel, and the third through hole and the fourth through hole are provided with opposite through holes.
Further, the first adapter further comprises:
a fifth through hole;
the first nut is arranged at one end of the fifth through hole and used for fixing the first connecting rod;
the second nut is arranged at the other end of the fifth through hole and used for fixing the second connecting rod;
the second adapter further comprises:
a sixth through hole;
the third nut is arranged at one end of the sixth through hole and used for fixing the third connecting rod;
and the fourth nut is arranged at the other end of the sixth through hole and is used for fixing the fourth connecting rod.
Further, the connection terminal further includes:
the partition plate is arranged on the base and used for isolating the first hollow area and the second hollow area, and a first mounting hole and a second mounting hole are further formed in the two ends of the partition plate.
Furthermore, a first mounting seat and a second mounting seat are arranged on the base;
the connection terminal further includes:
the first screw is used for fixing the first extension part on the first mounting seat;
the second screw is used for fixing the second extending part on the second mounting seat;
a third mounting seat and a fourth mounting seat are arranged on the base;
the connection terminal further includes:
a third screw for fixing the third extension part on the third mounting seat;
and the fourth screw is used for fixing the fourth extending part on the fourth mounting seat.
The utility model provides a battery box, including box, battery, PCB face guard, liquid magnetic circuit breaker, connecting terminal, control panel and pilot lamp, the lower box includes the bottom plate, fixes first baffle, second baffle, third baffle and the fourth baffle that connects gradually on the bottom plate, the battery is located the lower box, be equipped with the switch board that connects gradually on the PCB face guard, discharge electrode, heating panel and display panel, this application technical scheme simple structure to because the volume of liquid magnetic circuit breaker, connecting terminal and control panel is less, make whole PCB panel volume less, light in weight, space utilization is high, and the battery of different electric quantities can be connected to this PCB panel, realize the general to the battery of different electric quantities.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a battery box according to an embodiment of the present invention;
fig. 2 is a front view of a battery box according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of a PCB panel of a battery box according to an embodiment of the present invention;
fig. 4 is an exploded schematic view of a battery box according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a connection terminal of a battery box according to an embodiment of the present invention;
fig. 6 is an exploded schematic view of a connection terminal of a battery box according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word cover the elements or items listed after that word and their equivalents, without excluding the remaining elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
An embodiment of the utility model provides a battery box, as shown in fig. 1 to fig. 4, the battery box includes:
the box body comprises a box cover 201 and a lower box body 202, wherein the lower box body 202 comprises a bottom plate, a first baffle, a second baffle, a third baffle and a fourth baffle which are fixed on the bottom plate and connected in sequence;
a battery 200 located within the lower case 202;
a PCB mask 100 provided with a switching plate 101, a discharging plate 102, a heat radiating plate 103, and a display panel 104 connected in sequence, and mounted on the first barrier;
a liquid magnetic breaker 110 installed on the back surface of the switch board 101, a control end of which is connected to a switch on the switch board 101;
the connecting terminal 111 is installed on the back of the discharge plate 102, is electrically connected with the liquid magnetic breaker 110 and the battery, comprises two connecting rods connected with the anode and the cathode of the battery, and is positioned at the opening of the discharge plate 102 through connecting pieces respectively connected with the two connecting rods;
a control board 112, which is located between the heat dissipation plate 103 and the first barrier, and is electrically connected to the battery;
and an indicator lamp 114, which is positioned on the front surface of the display panel 104 and electrically connected to the control board 112.
Wherein, the one end of first baffle fixed connection second baffle in the lower box 202 and the one end of fourth baffle, third baffle and first baffle parallel arrangement to the other end of third baffle fixed connection second baffle and the other end of fourth baffle.
Wherein, including a plurality of regions on the PCB face guard 100, be the switch region respectively, discharge area, heat dissipation area and display area, the switch region comprises switch board 101, discharge area comprises discharge plate 102, be equipped with the discharge hole on discharge plate 102, be equipped with discharge cover 115 on the discharge hole, it can be connected with the connecting piece in the discharge hole to open discharge cover 115, heat dissipation area comprises heating panel 103, heating panel 103 includes the fin of a plurality of connections, the display area comprises display panel 104, be equipped with display lamp 114 on the display panel, when the battery is in operating condition, the display lamp is in the state of lighting.
The liquid magnetic breaker 110 is in a disconnected state when the external electric equipment is connected to the discharge port, so that the battery stops discharging, and live working is avoided.
Wherein, control panel 112 is located between PCB face guard 100 and the first baffle, is equipped with the controller on the control panel 112, the controller is located the heating panel with between the control panel, still be equipped with communication board 113 on the control panel, the controller can be power manager for monitor the battery through the communication board when the battery discharges, control the battery and stop discharging when the process of discharging current appears when unusual, the current can be too big for the electric current unusually.
The second baffle plate and the fourth baffle plate are respectively provided with a hanging lug, the hanging lug is provided with a handle, as shown in fig. 4, the second baffle plate is provided with a hanging lug 204, and the hanging lug 204 is provided with a handle 205.
A first pressing strip is arranged between the box cover and the second baffle, a second pressing strip is arranged between the box cover and the fourth baffle, and as shown in fig. 4, a first pressing strip 203 is arranged between the box cover 201 and the second baffle.
Wherein, the battery 200 is connected with the control board 112 through the soft copper bar 206.
This embodiment provides a battery box, including box, battery, PCB face guard, liquid magnetic circuit breaker, connecting terminal, control panel and pilot lamp, the lower box includes the bottom plate, fixes first baffle, second baffle, third baffle and fourth baffle that connect gradually on the bottom plate, the battery is located the lower box, be equipped with the switch board that connects gradually on the PCB face guard, discharge electrode, heating panel and display panel, this application technical scheme simple structure, and because the volume of liquid magnetic circuit breaker, connecting terminal and control panel is less, make whole PCB panel volume less, light in weight, space utilization is high, and the battery of different electric quantities can be connected to this PCB panel, realize the general to the battery of different electric quantities.
As shown in fig. 5 and 6, the connection terminal 111 includes:
the base 10 is provided with a first hollow-out area and a second hollow-out area which are arranged at intervals;
the first U-shaped copper bar 11 is positioned in the first hollow area and comprises a first copper arm and a second copper arm which are connected together, a first through hole is formed in the first copper arm, and a second through hole is formed in the second copper arm;
the first adapter 12 is positioned in the first U-shaped copper bar 11 and comprises a first fixing portion, a first extending portion and a second extending portion, wherein the first extending portion and the second extending portion are fixed on the first fixing portion, and the first adapter 12 is fixed on the base 10 through the first extending portion and the second extending portion;
a first connecting rod 13 which passes through the first through hole and is fixedly connected with the first adapter 12, and the head of the first connecting rod is contacted with the first copper arm;
a second connecting rod 14 which passes through the second through hole and is fixedly connected with the first adapter 12, and the head part of the second connecting rod is contacted with the second copper arm;
the second U-shaped copper bar 15 is positioned in the second hollow area and comprises a third copper arm and a fourth copper arm which are connected together, a third through hole is formed in the third copper arm, and a fourth through hole is formed in the fourth copper arm;
the second adapter 16 is positioned in the second U-shaped copper bar 15 and comprises a second fixing part, a third extending part and a fourth extending part, and the second adapter 16 is fixed on the base 10 through the third extending part and the fourth extending part;
a third connecting rod 17 which passes through the third through hole and is fixedly connected with the second adapter 16, and the head part of the third connecting rod is contacted with the third copper arm;
and a fourth connecting rod 18, which passes through the fourth through hole and is fixedly connected with the second adapter 16, and the head of the fourth connecting rod is in contact with the fourth copper arm.
When the battery is connected with an external device through the connecting terminal 112, the positive pole of the battery is led out of the connecting line or the connecting terminal and is fixedly connected to the second copper arm through the head of the second connecting rod 14, the head of the first connecting rod 13 is used for fixedly connecting the connecting line or the connecting terminal to the first copper arm to lead out the positive output end of the battery, the abdominal muscle of the battery is led out of the connecting line or the connecting terminal and is fixedly connected to the fourth copper arm through the head of the fourth connecting rod 18, and the head of the third connecting rod 17 is used for fixedly connecting the connecting line or the connecting terminal to the third copper arm to lead out the negative output end of the battery.
The embodiment provides a connecting terminal 112, connecting terminal 112 includes the base, first U type copper bar, first adapter, the head rod, the second connecting rod, second U type copper bar, the second adapter, the third connecting rod, the fourth connecting rod, this connecting terminal 112 passes through the positive pole of second connecting rod connection battery, the second connecting rod is connected with the head rod through first U type copper bar, the head rod is exported through the connecting wire, this connecting terminal 112 passes through the negative pole of fourth connecting rod connection battery, the fourth connecting rod passes through second U type copper bar and is connected with the third connecting rod, the third connecting rod exports through the connecting wire, this technical scheme can realize always positive always negative integral type terminal, compare in traditional wall-piercing terminal simple structure, and workable, the assembly is simple, and small in size, space utilization is high.
Further, the first U-shaped copper bar 11 further includes:
the first copper connecting portion, first copper arm and second copper arm are perpendicular and fixed connection with first copper connecting portion respectively, first copper arm and second copper arm parallel arrangement are equipped with relative through-hole on first through-hole and the second through-hole.
Wherein, the first copper arm and the second copper arm are connected by a copper connecting part, which can realize good electric conduction between the first connecting rod 13 and the second connecting rod 14.
Further, the second U-shaped copper bar 15 further includes:
the second copper connecting part, the third copper arm and the fourth copper arm are respectively perpendicular to and fixedly connected with the second copper connecting part, the third copper arm and the fourth copper arm are arranged in parallel, and the third through hole and the fourth through hole are provided with opposite through holes.
Wherein the third copper arm and the fourth copper arm are connected by a copper connection, which enables good electrical conduction between the third connecting rod 17 and the fourth connecting rod 18.
Further, the first adapter 12 further includes:
a fifth through hole;
a first nut provided at one end of the fifth through hole for fixing the first connecting rod 13;
and a second nut provided at the other end of the fifth through hole for fixing the second connecting rod 14.
The first nut is used to fix the first connecting rod 13 to the first adapter 12, and the second nut is used to fix the second connecting rod 14 to the first adapter 12, wherein the first nut and the second nut are integrally formed on the mold of the first adapter 12.
Further, the second adapter 16 further includes:
a sixth via hole;
a third nut provided at one end of the sixth through hole for fixing the third connecting rod 17;
and a fourth nut provided at the other end of the sixth through hole for fixing the fourth connecting rod 18.
The third nut is used for fixing the third connecting rod 17 on the second adapter 16, the fourth nut is used for fixing the fourth connecting rod 18 on the second adapter 16, and the third nut and the fourth nut are integrally formed on a die of the second adapter 16.
Further, the connection terminal 112 further includes:
and the partition plate is arranged on the base 10 and used for isolating the first hollow area from the second hollow area.
Wherein the spacer is configured to separate the first adapter 12 in the first hollow region from the second adapter 16 in the second hollow region.
Furthermore, a first mounting hole and a second mounting hole are further formed in the two ends of the partition plate.
Wherein the first and second mounting holes are used to connect the connection terminal 112 on the cover plate.
Further, a first mounting seat and a second mounting seat are arranged on the base 10;
the connection terminal 112 further includes:
a first screw 19 for fixing the first extension part to the first mounting seat;
and a second screw 20 for fixing the second extension portion to the second mounting seat.
The first screw 19 and the second screw 20 are used for fixing the first U-shaped copper bar 11 on the base 10.
Further, a third mounting seat and a fourth mounting seat are arranged on the base 10;
the connection terminal 112 further includes:
a third screw 21 for fixing the third extension part on the third mounting seat;
and a fourth screw 22 for fixing the fourth extension part to the fourth mounting seat.
The third screw 21 and the fourth screw 22 are used for fixing the second U-shaped copper bar 15 on the base 10.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. For those skilled in the art to which the invention pertains, numerous equivalent substitutions or obvious variations may be made without departing from the spirit of the invention, and the same properties or uses are deemed to fall within the scope of the invention as defined by the claims appended hereto.
Claims (10)
1. A battery box, characterized in that the battery box comprises:
the box body comprises a box cover and a lower box body, wherein the lower box body comprises a bottom plate, a first baffle, a second baffle, a third baffle and a fourth baffle which are fixed on the bottom plate and connected in sequence;
a battery located within the lower case;
the PCB mask is provided with a switch board, a discharge board, a heat dissipation board and a display board which are connected in sequence and is arranged on the first baffle;
the liquid magnetic breaker is arranged on the back surface of the switch board, and the control end of the liquid magnetic breaker is connected with the switch on the switch board;
the connecting terminal is arranged on the back surface of the discharge plate, is electrically connected with the liquid magnetic circuit breaker and the battery, comprises two connecting rods connected with the anode and the cathode of the battery, and is positioned at the opening of the discharge plate through a connecting piece respectively connected with the two connecting rods;
a control board positioned between the heat dissipation plate and the first barrier, and electrically connected to the battery;
and the indicator light is positioned on the front surface of the display panel and is electrically connected with the control panel.
2. The battery box according to claim 1, wherein the heat dissipating plate is provided with heat dissipating fins connected in series.
3. The battery box according to claim 1, wherein a controller is provided on the control board, the controller being located between the heat dissipation plate and the control board.
4. The battery box according to claim 1, wherein the second baffle and the fourth baffle are respectively provided with a hanging lug, and the hanging lug is provided with a handle.
5. The battery box of claim 1, wherein a first bead is disposed between the box cover and the second baffle, and a second bead is disposed between the box cover and the fourth baffle.
6. The battery box according to claim 1, wherein the connection terminal includes:
the base is provided with a first hollow-out area and a second hollow-out area which are arranged at intervals;
the first U-shaped copper bar is positioned in the first hollow area and comprises a first copper arm and a second copper arm which are connected together, a first through hole is formed in the first copper arm, and a second through hole is formed in the second copper arm;
the first adapter is positioned in the first U-shaped copper bar and comprises a first fixing part, a first extending part and a second extending part, the first extending part and the second extending part are fixed on the first fixing part, and the first adapter is fixed on the base through the first extending part and the second extending part;
the first connecting rod penetrates through the first through hole to be fixedly connected with the first adapter, and the head of the first connecting rod is in contact with the first copper arm;
the second connecting rod penetrates through the second through hole to be fixedly connected with the first adapter, and the head of the second connecting rod is in contact with the second copper arm;
the second U-shaped copper bar is positioned in the second hollow area and comprises a third copper arm and a fourth copper arm which are connected together, a third through hole is formed in the third copper arm, and a fourth through hole is formed in the fourth copper arm;
the second adapter is positioned in the second U-shaped copper bar and comprises a second fixing part, a third extending part and a fourth extending part, wherein the third extending part and the fourth extending part are fixed on the second fixing part;
the third connecting rod penetrates through the third through hole to be fixedly connected with the second adapter, and the head of the third connecting rod is in contact with the third copper arm;
and the fourth connecting rod penetrates through the fourth through hole to be fixedly connected with the second adapter, and the head of the fourth connecting rod is in contact with the fourth copper arm.
7. The battery box of claim 6, wherein the first U-shaped copper bar further comprises:
the first copper arm and the second copper arm are respectively perpendicular to and fixedly connected with the first copper connecting part, the first copper arm and the second copper arm are arranged in parallel, and the first through hole and the second through hole are provided with opposite through holes;
the second U type copper bar still includes:
the third copper arm and the fourth copper arm are respectively perpendicular to and fixedly connected with the second copper connecting portion, the third copper arm and the fourth copper arm are arranged in parallel, and opposite through holes are formed in the third through hole and the fourth through hole.
8. The battery box of claim 6, wherein the first adapter further comprises:
a fifth through hole;
the first nut is arranged at one end of the fifth through hole and used for fixing the first connecting rod;
the second nut is arranged at the other end of the fifth through hole and used for fixing the second connecting rod;
the second adapter further comprises:
a sixth through hole;
the third nut is arranged at one end of the sixth through hole and used for fixing the third connecting rod;
and the fourth nut is arranged at the other end of the sixth through hole and used for fixing the fourth connecting rod.
9. The battery box according to claim 6, wherein the connection terminal further comprises:
the partition plate is arranged on the base and used for isolating the first hollow area and the second hollow area, and a first mounting hole and a second mounting hole are further formed in the two ends of the partition plate.
10. The battery box of claim 6, wherein the base is provided with a first mounting seat and a second mounting seat;
the connection terminal further includes:
the first screw is used for fixing the first extension part on the first mounting seat;
the second screw is used for fixing the second extending part on the second mounting seat;
a third mounting seat and a fourth mounting seat are arranged on the base;
the connection terminal further includes:
the third screw is used for fixing the third extending part on the third mounting seat;
and the fourth screw is used for fixing the fourth extending part on the fourth mounting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221396146.9U CN217848159U (en) | 2022-06-06 | 2022-06-06 | Battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221396146.9U CN217848159U (en) | 2022-06-06 | 2022-06-06 | Battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217848159U true CN217848159U (en) | 2022-11-18 |
Family
ID=84021493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221396146.9U Active CN217848159U (en) | 2022-06-06 | 2022-06-06 | Battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217848159U (en) |
-
2022
- 2022-06-06 CN CN202221396146.9U patent/CN217848159U/en active Active
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