CN220022355U - Multifunctional battery switching circuit and electric bicycle sharing lithium battery - Google Patents
Multifunctional battery switching circuit and electric bicycle sharing lithium battery Download PDFInfo
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- CN220022355U CN220022355U CN202320810106.2U CN202320810106U CN220022355U CN 220022355 U CN220022355 U CN 220022355U CN 202320810106 U CN202320810106 U CN 202320810106U CN 220022355 U CN220022355 U CN 220022355U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 77
- 238000004891 communication Methods 0.000 claims abstract description 46
- 230000008859 change Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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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 multifunctional battery switching circuit and an electric bicycle sharing lithium battery. The battery multifunctional switching circuit comprises a communication read-write circuit, a voltage switching circuit and a system access circuit; the communication read-write circuit comprises a first optical coupler and a first identification diode, wherein the cathode of the first identification diode is used for being connected with a communication read-write identification end of the battery manager; the voltage switching circuit comprises a second optocoupler and a second identification diode; the system access circuit comprises a system access electronic switching tube and a seventh resistor, and a first end of the system access electronic switching tube is used for being connected with a system access identification end of the battery manager. The starting of the communication read-write function and the system access function are based on the voltage change of the multifunctional port of the same battery, and under the condition of having the functions of communication read-write and system access identification, a plurality of ports are omitted, so that the cost is effectively reduced.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a multifunctional battery switching circuit and an electric bicycle sharing lithium battery.
Background
Nowadays, electric bicycles are increasingly used in various scenes by virtue of their flexibility, environmental protection, and the like. However, the safety problem of lithium batteries frequently occurs, and the lithium batteries are forbidden to be brought into a building for charging by various legislation. Under the condition that the shared lithium battery becomes the optimal solution, the shared lithium battery is combined with the charging cabinet to provide a convenient and safe charging method for the electric bicycle user, but the shared lithium battery is easy to generate the condition that a battery interface is ignited and then a joint is damaged in actual use, and in order to realize the requirement of an ignition prevention function, a corresponding port is added on the interface to judge the system access condition, for example, the Chinese patent application with the application number of CN 201410249300.3. Because the battery is applied to the sharing scene, in order to adapt to the communication function of some vehicle types, the sharing battery is also required to have the communication function.
However, the traditional shared lithium battery product has no design of the anti-sparking function and the communication function, which results in poor use experience of users, joint damage and other conditions, and in order to realize the two functions, a system access signal port and a communication port are required to be added, and at least 2PIN ports are reserved in the joint, so that the design of the joint, the reduction of cost and the adaptation of vehicle types are not facilitated.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a multifunctional battery switching circuit with communication read-write and system access identification functions and an electric bicycle shared lithium battery.
The aim of the utility model is realized by the following technical scheme:
a battery multi-function switching circuit comprising: the system comprises a communication read-write circuit, a voltage switching circuit and a system access circuit; the communication read-write circuit comprises a first optical coupler and a first identification diode, wherein the light-emitting first end of the first optical coupler is used for being connected with a multifunctional port of a battery, the light-receiving first end of the first optical coupler is connected with the positive electrode of the first identification diode, the negative electrode of the first identification diode is used for being connected with the communication read-write identification end of a battery manager, and the light-receiving second end of the first optical coupler is grounded; the voltage switching circuit comprises a second optical coupler and a second identification diode, the battery multifunctional port is connected with a light-emitting first end of the second optical coupler through the second identification diode, a light-emitting second end of the second optical coupler is used for being connected with a battery cathode, a light-receiving first end of the second optical coupler is connected with a light-emitting second end of the first optical coupler, and a light-receiving second end of the second optical coupler is connected with the battery cathode; the system access circuit comprises a system access electronic switch tube and a seventh resistor, wherein the first light-emitting end of the second optical coupler is connected with the control end of the system access electronic switch tube, the first light-emitting end of the second optical coupler is grounded through the seventh resistor, the first end of the system access electronic switch tube is used for being connected with the system access identification end of the battery manager, and the second end of the system access electronic switch tube is grounded.
In one embodiment, the communication read-write circuit further includes a first resistor, a first end of the first resistor is used for connecting with a reference power supply, and a second end of the first resistor is connected with a light receiving first end of the first optical coupler.
In one embodiment, the communication read-write circuit further includes a second resistor, and the light emitting first end of the first optical coupler is connected with the light emitting second end of the first optical coupler through the second resistor.
In one embodiment, the voltage switching circuit further includes a third resistor, a cathode of the second identification diode is connected to a first end of the third resistor, and a second end of the third resistor is connected to the light emitting first end of the second optocoupler.
In one embodiment, the voltage switching circuit further includes a voltage switching regulator tube, and the second end of the third resistor is connected to the light emitting first end of the second optocoupler through the voltage switching regulator tube.
In one embodiment, the voltage switching circuit further includes a fourth resistor, and the light emitting first end of the second optocoupler is connected to the light emitting second end of the second optocoupler through the fourth resistor.
In one embodiment, the system access circuit further comprises a fifth resistor, a first end of the fifth resistor is used for being connected with a reference power supply, and a second end of the fifth resistor is connected with a first end of the system access electronic switching tube.
In one embodiment, the system access circuit further comprises a sixth resistor, and the first end of the system access electronic switch tube is connected with the system access identification end of the battery manager through the sixth resistor.
In one embodiment, the system access electronic switching tube is an NPN triode.
The electric bicycle shared lithium battery comprises the battery multifunctional switching circuit in any embodiment.
Compared with the prior art, the utility model has at least the following advantages:
after the second optical coupler is conducted, so that the communication read-write function of the battery is started conveniently; after the system access electronic switching tube is conducted, the first end of the system access electronic switching tube is provided with voltage, so that the system access function of the battery is started conveniently, and the starting of the communication read-write function and the system access function are both based on the voltage change of the multifunctional port of the same battery, so that a plurality of ports are omitted under the condition of having the functions of communication read-write and system access identification, and the cost is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a circuit diagram of a battery multi-function switching circuit in an embodiment;
FIG. 2 is a circuit diagram of a communication read-write circuit in the battery multifunction switch circuit shown in FIG. 1;
FIG. 3 is a circuit diagram of a voltage switching circuit in the multi-function switching circuit of the battery shown in FIG. 1;
fig. 4 is a circuit diagram of a system access circuit in the battery multifunction switching circuit shown in fig. 1.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model relates to a multifunctional battery switching circuit. In one embodiment, the battery multifunctional switching circuit comprises a communication read-write circuit, a voltage switching circuit and a system access circuit; the communication read-write circuit comprises a first optical coupler and a first identification diode, wherein the light-emitting first end of the first optical coupler is used for being connected with a multifunctional port of a battery, the light-receiving first end of the first optical coupler is connected with the positive electrode of the first identification diode, the negative electrode of the first identification diode is used for being connected with the communication read-write identification end of a battery manager, and the light-receiving second end of the first optical coupler is grounded; the voltage switching circuit comprises a second optical coupler and a second identification diode, the battery multifunctional port is connected with a light-emitting first end of the second optical coupler through the second identification diode, a light-emitting second end of the second optical coupler is used for being connected with a battery cathode, a light-receiving first end of the second optical coupler is connected with a light-emitting second end of the first optical coupler, and a light-receiving second end of the second optical coupler is connected with the battery cathode; the system access circuit comprises a system access electronic switch tube and a seventh resistor, wherein the first light-emitting end of the second optical coupler is connected with the control end of the system access electronic switch tube, the first light-emitting end of the second optical coupler is grounded through the seventh resistor, the first end of the system access electronic switch tube is used for being connected with the system access identification end of the battery manager, and the second end of the system access electronic switch tube is grounded. After the second optical coupler is conducted, so that the communication read-write function of the battery is started conveniently; after the system access electronic switching tube is conducted, the first end of the system access electronic switching tube is provided with voltage, so that the system access function of the battery is started conveniently, and the starting of the communication read-write function and the system access function are both based on the voltage change of the multifunctional port of the same battery, so that a plurality of ports are omitted under the condition of having the functions of communication read-write and system access identification, and the cost is effectively reduced.
Please refer to fig. 1, which is a circuit diagram of a battery multi-function switching circuit according to an embodiment of the utility model.
The battery multifunctional switching circuit 10 of an embodiment includes a communication read-write circuit 100, a voltage switching circuit 200, and a system access circuit 300. Referring to fig. 2, the communication read/write circuit 100 includes a first optocoupler U1 and a first identification diode D1. The first light-emitting end of the first optical coupler U1 is used for being connected with a multifunctional port of a battery, the first light-receiving end of the first optical coupler U1 is connected with the positive electrode of the first identification diode D1, the negative electrode of the first identification diode D1 is used for being connected with a communication read-write identification end of a battery manager, and the second light-receiving end of the first optical coupler U1 is grounded. Referring to fig. 3, the voltage switching circuit 200 includes a second optocoupler U2 and a second identification diode D2. The multifunctional battery port is connected with the light-emitting first end of the second optical coupler U2 through the second identification diode D2, the light-emitting second end of the second optical coupler U2 is used for being connected with a battery cathode, the light-receiving first end of the second optical coupler U2 is connected with the light-emitting second end of the first optical coupler U1, and the light-receiving second end of the second optical coupler U2 is connected with the battery cathode. Referring to fig. 3, the system access circuit 300 includes a system access electronic switch Q1 and a seventh resistor R7. The first light-emitting end of the second optical coupler U2 is connected with the control end of the system access electronic switching tube Q1, the first light-emitting end of the second optical coupler U2 is grounded through the seventh resistor R7, the first end of the system access electronic switching tube Q1 is used for being connected with the system access identification end of the battery manager, and the second end of the system access electronic switching tube Q1 is grounded.
In this embodiment, after the second optocoupler U2 is turned on, so as to facilitate starting the communication read-write function of the battery; after the system access electronic switch tube Q1 is conducted, the first end of the system access electronic switch tube Q1 is provided with voltage, so that the system access function of the battery is started conveniently, and the starting of the communication read-write function and the system access function are both based on the voltage change of the multifunctional port of the same battery, so that a plurality of ports are omitted under the condition of having both the communication read-write function and the system access identification function, and the cost is effectively reduced. Wherein, battery manager is BMS battery management chip.
In another embodiment, the system access electronic switching tube Q1 is an NPN triode, a first end of the system access electronic switching tube Q1 is a collector of the NPN triode, a second end of the system access electronic switching tube Q1 is an emitter of the NPN triode, and a control end of the system access electronic switching tube Q1 is a base of the NPN triode.
In one embodiment, referring to fig. 2, the communication read-write circuit 100 further includes a first resistor R1, a first end of the first resistor R1 is used for reference power connection, and a second end of the first resistor R1 is connected to a light receiving first end of the first optical coupler U1. In this embodiment, the first resistor R1 is connected to the first optical coupler U1, specifically, the first resistor R1 is connected in parallel to the light receiving first end of the first optical coupler U1, and the first resistor R1 pulls up the voltage of the light receiving first end of the first optical coupler U1, that is, the first resistor R1 serves as a pull-up resistor of the light receiving first end of the first optical coupler U1, so that the voltage output by the light receiving first end of the first optical coupler U1 is increased, and the battery manager can accurately collect the communication read-write identification voltage.
In one embodiment, referring to fig. 2, the communication read-write circuit 100 further includes a second resistor R2, and the light emitting first end of the first optocoupler U1 is connected to the light emitting second end of the first optocoupler U1 through the second resistor R2. In this embodiment, the second resistor R2 is connected to the first optical coupler U1, specifically, the second resistor R2 is connected in parallel to the light emitting first end and the light emitting second end of the first optical coupler U1, the second resistor R2 is used as a light emitting input resistor of the first optical coupler U1, and the second resistor R2 rapidly conducts the light emitting first end and the light emitting second end of the first optical coupler U1, so as to improve the conducting rate of the first optical coupler U1, and thereby improve the response rate to the communication read/write function.
In one embodiment, referring to fig. 3, the voltage switching circuit 200 further includes a third resistor R3, the cathode of the second identification diode D2 is connected to the first end of the third resistor R3, and the second end of the third resistor R3 is connected to the light emitting first end of the second optocoupler U2. In this embodiment, the third resistor R3 is connected to the second optocoupler U2, specifically, the third resistor R3 is connected in series between the second identification diode D2 and the second optocoupler U2, and the third resistor R3 limits the input current of the light emitting end of the second optocoupler U2, so as to avoid the input current of the light emitting end of the second optocoupler U2 from being too large, so as to ensure the normal operation of the second optocoupler U2.
Further, the voltage switching circuit 200 further includes a voltage switching regulator DZ1, and the second end of the third resistor R3 is connected to the light emitting first end of the second optocoupler U2 through the voltage switching regulator DZ 1. In this embodiment, the voltage switching regulator DZ1 is connected to the second optocoupler U2, specifically, the voltage switching regulator DZ1 is connected in series between the third resistor R3 and the light emitting end of the second optocoupler U2, and the voltage switching regulator DZ1 limits the voltage of the light emitting end of the second optocoupler U2, so that the conducting voltage of the light emitting end of the second optocoupler U2 is stable.
In one embodiment, referring to fig. 3, the voltage switching circuit 200 further includes a fourth resistor R4, and the light emitting first end of the second optocoupler U2 is connected to the light emitting second end of the second optocoupler U2 through the fourth resistor R4. In this embodiment, the fourth resistor R4 is connected to the second optocoupler U2, specifically, the fourth resistor R4 is connected in parallel to the light emitting first end and the light emitting second end of the second optocoupler U2, the fourth resistor R4 is used as a light emitting input resistor of the second optocoupler U2, and the fourth resistor R4 rapidly conducts the light emitting first end and the light emitting second end of the second optocoupler U2, so as to improve the conducting rate of the second optocoupler U2, and thereby improve the response rate of switching communication read-write and system access identification functions.
In one embodiment, referring to fig. 4, the system access circuit 300 further includes a fifth resistor R5, a first end of the fifth resistor R5 is used for being connected to a reference power supply, and a second end of the fifth resistor R5 is connected to a first end of the system access electronic switching tube Q1. In this embodiment, the fifth resistor R5 is connected to the system access electronic switching tube Q1, specifically, the fifth resistor R5 is connected in parallel to the first end of the system access electronic switching tube Q1, and the fifth resistor R5 pulls up the voltage of the first end of the system access electronic switching tube Q1, that is, the fifth resistor R5 is used as a pull-up resistor of the first end of the system access electronic switching tube Q1, so as to increase the voltage output by the first end of the system access electronic switching tube Q1, thereby facilitating the battery manager to accurately collect the system access identification voltage.
In one embodiment, referring to fig. 4, the system access circuit 300 further includes a sixth resistor R6, and the first end of the system access electronic switching tube Q1 is connected to the system access identification end of the battery manager through the sixth resistor R6. In this embodiment, the sixth resistor R6 is connected to the system access electronic switching tube Q1, specifically, the sixth resistor R6 is connected in series to the first end of the system access electronic switching tube Q1, and the sixth resistor R6 limits current on the first end of the system access electronic switching tube Q1, so as to avoid a situation that the current on the first end of the system access electronic switching tube Q1 is too large, and ensure normal operation of the system access electronic switching tube Q1.
In one embodiment, the utility model further provides an electric bicycle shared lithium battery, which comprises the battery multifunctional switching circuit in any embodiment. In this embodiment, the battery multifunctional switching circuit includes a communication read-write circuit, a voltage switching circuit, and a system access circuit; the communication read-write circuit comprises a first optical coupler and a first identification diode, wherein the light-emitting first end of the first optical coupler is used for being connected with a multifunctional port of a battery, the light-receiving first end of the first optical coupler is connected with the positive electrode of the first identification diode, the negative electrode of the first identification diode is used for being connected with the communication read-write identification end of a battery manager, and the light-receiving second end of the first optical coupler is grounded; the voltage switching circuit comprises a second optical coupler and a second identification diode, the battery multifunctional port is connected with a light-emitting first end of the second optical coupler through the second identification diode, a light-emitting second end of the second optical coupler is used for being connected with a battery cathode, a light-receiving first end of the second optical coupler is connected with a light-emitting second end of the first optical coupler, and a light-receiving second end of the second optical coupler is connected with the battery cathode; the system access circuit comprises a system access electronic switch tube and a seventh resistor, wherein the first light-emitting end of the second optical coupler is connected with the control end of the system access electronic switch tube, the first light-emitting end of the second optical coupler is grounded through the seventh resistor, the first end of the system access electronic switch tube is used for being connected with the system access identification end of the battery manager, and the second end of the system access electronic switch tube is grounded. After the second optical coupler is conducted, so that the communication read-write function of the battery is started conveniently; after the system access electronic switching tube is conducted, the first end of the system access electronic switching tube is provided with voltage, so that the system access function of the battery is started conveniently, and the starting of the communication read-write function and the system access function are both based on the voltage change of the multifunctional port of the same battery, so that a plurality of ports are omitted under the condition of having the functions of communication read-write and system access identification, and the cost is effectively reduced.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A battery multifunctional switching circuit, comprising:
the communication read-write circuit comprises a first optical coupler and a first identification diode, wherein the light-emitting first end of the first optical coupler is connected with the multifunctional port of the battery, the light-receiving first end of the first optical coupler is connected with the positive electrode of the first identification diode, the negative electrode of the first identification diode is connected with the communication read-write identification end of the battery manager, and the light-receiving second end of the first optical coupler is grounded;
the voltage switching circuit comprises a second optical coupler and a second identification diode, the battery multifunctional port is connected with the light-emitting first end of the second optical coupler through the second identification diode, the light-emitting second end of the second optical coupler is used for being connected with a battery cathode, the light-receiving first end of the second optical coupler is connected with the light-emitting second end of the first optical coupler, and the light-receiving second end of the second optical coupler is connected with the battery cathode;
the system access circuit comprises a system access electronic switch tube and a seventh resistor, wherein the first light-emitting end of the second optical coupler is connected with the control end of the system access electronic switch tube, the first light-emitting end of the second optical coupler is grounded through the seventh resistor, the first end of the system access electronic switch tube is used for being connected with the system access identification end of the battery manager, and the second end of the system access electronic switch tube is grounded.
2. The battery multifunctional switching circuit according to claim 1, wherein the communication read-write circuit further comprises a first resistor, a first end of the first resistor is used for reference power connection, and a second end of the first resistor is connected with a light receiving first end of the first optical coupler.
3. The battery multifunction switching circuit of claim 1, wherein the communication read-write circuit further comprises a second resistor, the light emitting first end of the first optocoupler being connected to the light emitting second end of the first optocoupler through the second resistor.
4. The battery multifunction switching circuit of claim 1, further comprising a third resistor, wherein a negative electrode of the second identification diode is connected to a first end of the third resistor, and a second end of the third resistor is connected to a light emitting first end of the second optocoupler.
5. The battery multifunction switching circuit of claim 4, further comprising a voltage switching regulator tube, wherein the second end of the third resistor is connected to the light emitting first end of the second optocoupler through the voltage switching regulator tube.
6. The battery multifunction switching circuit of claim 1, wherein the voltage switching circuit further comprises a fourth resistor, the light emitting first end of the second optocoupler being connected to the light emitting second end of the second optocoupler through the fourth resistor.
7. The battery multifunction switching circuit of claim 1, wherein the system access circuit further comprises a fifth resistor, a first end of the fifth resistor is configured to be connected to a reference power source, and a second end of the fifth resistor is configured to be connected to a first end of the system access electronic switching tube.
8. The battery multifunction switching circuit of claim 1, wherein the system access circuit further comprises a sixth resistor, the first end of the system access electronic switching tube being connected to the system access identification end of the battery manager through the sixth resistor.
9. The battery multifunction switching circuit of claim 1, wherein the system access electronic switching tube is an NPN transistor.
10. A shared lithium battery for an electric bicycle, characterized by comprising the battery multifunctional switching circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320810106.2U CN220022355U (en) | 2023-04-12 | 2023-04-12 | Multifunctional battery switching circuit and electric bicycle sharing lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320810106.2U CN220022355U (en) | 2023-04-12 | 2023-04-12 | Multifunctional battery switching circuit and electric bicycle sharing lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220022355U true CN220022355U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320810106.2U Active CN220022355U (en) | 2023-04-12 | 2023-04-12 | Multifunctional battery switching circuit and electric bicycle sharing lithium battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN220022355U (en) |
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2023
- 2023-04-12 CN CN202320810106.2U patent/CN220022355U/en active Active
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