CN111584812A - Lithium battery pack - Google Patents
Lithium battery pack Download PDFInfo
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- CN111584812A CN111584812A CN202010270888.6A CN202010270888A CN111584812A CN 111584812 A CN111584812 A CN 111584812A CN 202010270888 A CN202010270888 A CN 202010270888A CN 111584812 A CN111584812 A CN 111584812A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a lithium battery pack, which comprises a conversion circuit and an output port, wherein the conversion circuit is connected with the output port; the conversion circuit comprises at least two battery modules with the same voltage and a multi-stage bidirectional conversion switch; the battery modules are electrically connected through the multi-stage bidirectional transfer switch, the multi-stage bidirectional transfer switch comprises a series switch and a parallel switch, when the series switch is closed, the parallel switch is disconnected, and the series switch converts the battery modules from parallel connection to series connection; when the parallel switch is closed, the series connection is disconnected, and the parallel switch converts the series connection between the battery modules into the parallel connection; the output port comprises an anode port and a cathode port, the anode port is electrically connected with the input end of the conversion circuit, and the cathode port is electrically connected with the output end of the conversion circuit. The lithium battery pack provided by the invention can freely switch the serial or parallel connection mode among the battery modules to adjust the voltage of the lithium battery pack.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a lithium battery pack.
Background
With the development of the lithium battery industry, the application of the lithium battery is more and more extensive. Due to different application scenes, the battery pack with the same installation structure is required to have different electrical parameters for universality, one battery pack needs to be subjected to several series-parallel combination to meet the actual use requirement, and when the series-parallel combination is completed, the battery pack is not easy to change and needs different electrical parameters, the series-parallel combination needs to be carried out again, so that the manpower, material resources and financial resources are greatly consumed.
Disclosure of Invention
The invention mainly aims to provide a lithium battery pack, which can realize free switching of a series connection mode or a parallel connection mode between battery modules and adjust voltage and current parameters of the lithium battery pack.
The invention provides a lithium battery pack, which comprises a conversion circuit and an output port, wherein the conversion circuit is connected with the output port;
the conversion circuit comprises at least two battery modules with the same voltage and a multi-stage bidirectional conversion switch; the battery modules are electrically connected through the multi-stage bidirectional transfer switch, the multi-stage bidirectional transfer switch comprises a series switch and a parallel switch, when the series switch is closed, the parallel switch is disconnected, and the series switch converts the battery modules from parallel connection to series connection; when the parallel switch is closed, the series connection is disconnected, and the parallel switch converts the series connection between the battery modules into the parallel connection; the output port comprises an anode port and a cathode port, the anode port is electrically connected with the input end of the conversion circuit, and the cathode port is electrically connected with the output end of the conversion circuit.
Furthermore, the lithium battery pack further comprises a protection circuit, one end of the protection circuit is electrically connected with the positive electrode port, and the other end of the protection circuit is electrically connected with the input end of the conversion circuit.
Furthermore, the conversion circuit comprises two battery modules with the same voltage, namely a first battery module and a second battery module, and the multistage bidirectional conversion switch comprises a switch handle, a switch cover plate, a switch connecting rod, a switch lower shell, a pole and a first cam;
the four poles are respectively a first pole, a second pole, a third pole and a fourth pole, the positive end of the first battery module is electrically connected with the first pole, the negative end of the first battery module is electrically connected with the second pole, the positive end of the second battery module is electrically connected with the third pole, and the negative end of the second battery module is electrically connected with the fourth pole;
the middle part of the lower switch shell is provided with a cavity, the first cam, the parallel switch and the series switch are positioned in the cavity, one end of the switch connecting rod is connected with the first cam, the other end of the switch connecting rod penetrates through the switch cover plate to be connected with the switch handle, the first cam is rotationally connected with the lower switch shell, four grooves are circumferentially arranged on the first cam, the grooves have two different depths, the depths of the oppositely arranged grooves are the same, the parallel switch comprises a first parallel switch and a second parallel switch, the first parallel switch and the second parallel switch are oppositely arranged, and the series switch is arranged on the side edge of the first parallel switch; when the parallel switch enters a deeper groove, the series switch enters a shallower groove, the parallel switch is closed, the series switch is disconnected, and the second pole is connected with the third pole; when the series switch enters the deeper groove, the parallel switch enters the shallower groove, the series switch is closed, the parallel switch is disconnected, and the first pole, the second pole, the third pole and the fourth pole are connected.
Further, the lithium battery pack further includes: the detection assembly is connected with the poles, the detection assembly is electrically connected with the display assembly, the detection assembly detects the conduction relation between the poles and judges the serial connection or parallel connection mode between the battery modules according to the conduction relation, and the display assembly displays the serial connection or parallel connection mode.
Further, the first parallel switch, the second parallel switch and the series switch comprise a second cam, an elastic component, a static contact component and a movable contact component;
one end of the second cam is connected with one end of the elastic component, the other end of the second cam is in contact with the first cam, and the other end of the elastic component is connected with the side edge of the cavity; the static contact component is connected to the side edge of the cavity and is provided with a static contact; the movable contact component is connected to the second cam, two ends of the movable contact component are respectively provided with a movable contact, when the parallel switch is closed, the fixed contact and the movable contact of the first parallel switch are contacted, the fixed contact and the movable contact of the second parallel switch are contacted, the fixed contact and the movable contact of the series switch are far away, when the series switch is closed, the fixed contact and the movable contact of the series switch are contacted, and the fixed contact and the movable contact of the first parallel switch and the movable contact of the second parallel switch are far away; the pole is connected with the static contact component.
Further, the switch handle is detachably connected with the other end of the switch connecting rod.
Furthermore, one end of the second cam is provided with an arc-shaped structure matched with the groove, and the arc-shaped structure is contacted with the groove.
Further, the stationary contact assembly is connected with the switch lower shell through a bolt.
Furthermore, the other end of the elastic component is detachably connected with the side edge of the cavity.
Furthermore, the elastic component comprises a pressure spring, one end of the pressure spring is connected with the second cam, and the other end of the pressure spring is connected with the side edge of the cavity.
According to the lithium battery pack provided by the invention, the battery modules are connected through the multistage bidirectional change-over switch, the series connection or parallel connection mode among the battery modules can be freely switched, the voltage of the lithium battery pack is adjusted, and when the lithium battery pack is connected in series, the voltage of the lithium battery pack and the voltage of the battery modules are in a multiple relation, so that a large amount of manpower, material resources and financial resources can be saved, a new battery pack can be developed, the time is saved, the production cost is reduced, and the lithium battery pack can be flexibly suitable for scenes with different electrical parameters. The lithium battery pack provided by the invention is simple in structure, convenient to operate, safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of lithium battery packs connected in parallel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of lithium battery packs connected in series according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of lithium battery packs connected in parallel according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of lithium battery packs connected in series according to another embodiment of the present invention;
fig. 5 is an exploded view of a multi-stage bidirectional switch according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a parallel structure of a multi-stage bidirectional transfer switch according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a series structure of a multi-stage bidirectional switch according to an embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 7, the present invention provides a lithium battery pack including a conversion circuit and an output port;
the conversion circuit comprises at least two battery modules with the same voltage and a multi-stage bidirectional conversion switch; the battery modules are electrically connected through the multi-stage bidirectional transfer switch, the multi-stage bidirectional transfer switch comprises a series switch and a parallel switch, when the series switch is closed, the parallel switch is disconnected, and the series switch converts the battery modules from parallel connection to series connection; when the parallel switch is closed, the series connection is disconnected, and the parallel switch converts the series connection between the battery modules into the parallel connection; the output port comprises an anode port 11 and a cathode port 12, the anode port 11 is electrically connected with the input end of the conversion circuit, and the cathode port 12 is electrically connected with the output end of the conversion circuit.
In the embodiment, the lithium battery pack provided by the invention can freely switch the serial connection or the parallel connection between the battery modules through the multistage bidirectional change-over switch in the change-over circuit, achieves the electrical parameters required by a user by switching the connection mode between the battery modules without resetting the lithium battery pack, and when the battery modules are switched from the parallel connection to the serial connection, the voltage of the lithium battery pack is in a multiple relation with the voltage of the battery modules. In the process of series-parallel switching between the battery modules, the series switch and the parallel switch are both disconnected, so that unnecessary loss caused by generated arc sparks is prevented. In the lithium battery pack in this embodiment, the series-parallel switching is performed after the lithium battery pack is disconnected from the external load.
In an embodiment, the lithium battery pack further includes a protection circuit 3, one end of the protection circuit 3 is electrically connected to the positive electrode port 11, and the other end of the protection circuit 3 is electrically connected to the input end of the conversion circuit.
In this embodiment, the protection circuit 3 includes a thermistor 31, a fuse or a circuit breaker, the thermistor 31 is connected in series with the switching circuit, and when the circuit is in a normal operating state, the current flowing through the thermistor 31 is not enough to make the self-heating temperature rise exceed the curie temperature of the thermistor 31, so that the thermistor 31 is always in a low-resistance state. When the circuit is in fault and the loop current is increased, the resistance value of the thermistor 31 is stepped due to self-heating temperature rise until the circuit is cut off. After the circuit fault is cleared, the thermistor 31 cools and recovers to a low resistance state, and the circuit also enters a normal operating state. When the next circuit fails again, the thermistor 31 can enter a protection state; the safety of the lithium battery pack is improved by providing the thermistor 31 for circuit protection.
In one embodiment, the conversion circuit includes two battery modules with the same voltage, namely a first battery module 211 and a second battery module 212, and the multi-stage bidirectional conversion switch includes a switch handle 22, a switch cover 23, a switch link 24, a switch lower shell 25, a pole, and a first cam 27;
the poles are connected to the lower switch shell 25, the four poles include a first pole 261, a second pole 262, a third pole 263 and a fourth pole 264, the positive end of the first battery module 211 is electrically connected to the first pole 261, the negative end of the first battery module is electrically connected to the second pole 262, the positive end of the second battery module 212 is electrically connected to the third pole 263, and the negative end of the second battery module is electrically connected to the fourth pole 264;
a cavity is arranged in the middle of the lower switch shell 25, the first cam 27, the parallel switch and the series switch are located in the cavity, one end of the switch connecting rod 24 is connected with the first cam 27, the other end of the switch connecting rod penetrates through the switch cover plate 23 to be connected with the switch handle 22, the first cam 27 is rotatably connected with the lower switch shell 25, four grooves are circumferentially arranged on the first cam 27, the grooves have two different depths, the depths of the oppositely arranged grooves are the same, the parallel switch comprises a first parallel switch and a second parallel switch, the first parallel switch and the second parallel switch are oppositely arranged, and the series switch is arranged on the side edge of the first parallel switch; when the parallel switch enters a deeper groove, the series switch enters a shallower groove, the parallel switch is closed, the series switch is opened, and the second pole 262 is connected with the third pole 263; when the series switch enters a deeper groove, the parallel switch enters a shallower groove, the series switch is closed, the parallel switch is opened, and the first pole 261, the second pole 262, the third pole 263 and the fourth pole 264 are turned on.
In this embodiment, as shown in fig. 3 and 4, the switch handle 22 is rotated to drive the first cam 27 to rotate, so as to control the on/off of the series switch and the parallel switch, and further to achieve the conduction of the poles, the structure is simple, the operation is convenient, and the user can freely rotate the switch handle 22 to achieve the switching between the series connection and the parallel connection of the battery modules. Specifically, a mark can be arranged on the switch cover plate 23 to indicate that the switch handle 22 is rotated to which position in series and rotated to which position in parallel, so that the operation of a user is facilitated.
In one embodiment, the lithium battery pack further comprises a detection component 4 and a display component 5, the detection component 4 is connected with the poles, the detection component 4 is electrically connected with the display component 5, the detection component 4 detects the conduction relation between the poles and judges the serial connection or parallel connection mode between the battery modules according to the conduction relation, and the display component 5 displays the serial connection or parallel connection mode.
In this embodiment, the detection assembly 4 can detect whether the positive terminal of one battery module is connected to the positive terminal or the negative terminal of another battery module, so as to determine whether the battery modules are connected in series or in parallel. Specifically, whether the first pole 261 and the fourth pole 264 are conducted or not can be detected. The detection component 4 may include a BMU (Battery Management Unit) or a BMS (Battery Management System), the detection component 4 may also measure a temperature and a voltage of the Battery pack, the detection Unit sends measured information to the display component 5, the display component 5 displays the information, and a user may conveniently and directly view the information on the display component 5 to know related information of the lithium Battery pack.
In one embodiment, the first parallel switch, the second parallel switch, and the series switch each include a second cam 281, a resilient member 282, a stationary contact member 283, and a movable contact member 284;
one end of the second cam 281 is connected with one end of the elastic member 282, the other end of the second cam 281 is in contact with the first cam 27, and the other end of the elastic member 282 is connected with the side of the cavity; the static contact component 283 is connected to the side edge of the cavity, and a static contact is arranged on the static contact component 283; the movable contact assembly 284 is connected to the second cam 281, two ends of the movable contact assembly 284 are respectively provided with a movable contact, when the parallel switch is closed, the fixed contact and the movable contact of the first parallel switch are contacted, the fixed contact and the movable contact of the second parallel switch are contacted, the fixed contact and the movable contact of the series switch are far away, when the series switch is closed, the fixed contact and the movable contact of the series switch are contacted, and the fixed contact and the movable contact of the first parallel switch and the movable contact of the second parallel switch are far away; the pole is connected to the stationary contact assembly 283.
In the embodiment, the parallel switch and the series switch are switched on and off simply and effectively by arranging the fixed contact and the movable contact. The positive pole and the negative pole of the battery module are respectively connected with the corresponding poles, the switch handle 22 is rotated, the first parallel switch and the second parallel switch enter the deeper groove, namely, the second cams 281 on the upper side and the lower side enter the deeper groove, the second cams 281 on the right side enter the shallower groove, at the moment, the movable contact assembly 284 of the first parallel switch and the second parallel switch moves along with the corresponding second cams 281, the movable contact on the movable contact assembly 284 is in contact with the corresponding fixed contact, so that the first parallel switch and the second parallel switch are closed, when the second cams 281 on the right side enter the shallower groove, the movable contact assembly 284 of the series switch moves along with the second cams 281, the movable contact and the fixed contact of the series switch are far away, so that the series switch is disconnected, and at the moment, the second poles 262 are conducted with the third poles 263. When the second cam 281 on the right side enters the deeper groove, the movable contact of the second cam 281 on the right side contacts the corresponding stationary contact, the series switch is closed, the second cams 281 on the upper and lower sides enter the shallower groove, the movable contact of the second cams 281 on the upper and lower sides is distant from the stationary contact, and the parallel switch is opened. Further, the stationary contact members 283 between adjacent stationary contact members may be an integral structure, as shown in the figure, the integral structure formed by two stationary contact members 283 is a right angle type, and a stationary contact is respectively arranged at two ends of the right angle.
In one embodiment, the switch handle 22 is removably coupled to the other end of the switch link 24. Switch handle 22 can be dismantled with switch connecting rod 24 and be connected in this embodiment, and convenient to overhaul, during the maintenance, dismantle switch handle 22 get off and open the inside condition of multistage two-way change over switch again alright directly see.
In one embodiment, one end of the second cam 281 is provided with an arc structure matched with the groove, and the arc structure is contacted with the groove.
In this embodiment, an arc structure is disposed at one end of the second cam 281 to match with the groove, so that the second cam 281 and the first cam 27 can rotate relatively when the switch handle 22 is rotated.
In one embodiment, the stationary contact assembly 283 is bolted to the switch lower housing 25.
In this embodiment, the static contact assembly 283 is a right-angle conductive metal sheet, and the static contact assembly 283 is connected to the side edge of the cavity of the lower shell 25 of the switch through a bolt, so that the structure is simple and the assembly is convenient.
In one embodiment, the other end of the elastic member 282 is detachably connected to the side of the cavity.
In this embodiment, can dismantle with the cavity side through the other end with elastic component 282 and be connected, the assembly of being convenient for, simultaneously, when elastic component 282 was insensitive, can dismantle and change, practiced thrift the cost.
In one embodiment, the elastic member 282 includes a compression spring, one end of which is connected to the second cam 281, and the other end of which is connected to the side of the cavity.
In this embodiment, the pressure spring has a simple structure, is convenient to install, and is low in cost, and the second cam 281 compresses the pressure spring to realize contact control between the movable contact and the stationary contact.
According to the lithium battery pack provided by the invention, the serial connection and parallel connection modes between the battery modules with the same voltage are freely switched through the conversion circuit, when the battery modules are converted from parallel connection to serial connection, the voltage of the lithium battery pack is in a multiple relation with the voltage of the battery modules, when the battery modules are connected in parallel, the voltage of the lithium battery pack is the same as the voltage of the battery modules, and the electrical parameters required by a user are achieved by switching the serial connection or parallel connection modes between the battery modules, and the lithium battery pack is directly switched through the multi-stage bidirectional conversion switch, so that the lithium battery pack is simple in structure and convenient to operate, and the user does not need to independently spend manpower, material resources and financial resources to reset a.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A lithium battery pack is characterized by comprising a conversion circuit and an output port;
the conversion circuit comprises at least two battery modules with the same voltage and a multi-stage bidirectional conversion switch; the battery modules are electrically connected through the multi-stage bidirectional transfer switch, the multi-stage bidirectional transfer switch comprises a series switch and a parallel switch, when the series switch is closed, the parallel switch is disconnected, and the series switch converts the battery modules from parallel connection to series connection; when the parallel switch is closed, the series connection is disconnected, and the parallel switch converts the series connection between the battery modules into the parallel connection; the output port comprises an anode port and a cathode port, the anode port is electrically connected with the input end of the conversion circuit, and the cathode port is electrically connected with the output end of the conversion circuit.
2. The lithium battery pack according to claim 1, further comprising a protection circuit, wherein one end of the protection circuit is electrically connected to the positive terminal port, and the other end of the protection circuit is electrically connected to the input terminal of the conversion circuit.
3. The lithium battery pack as claimed in claim 1, wherein the switching circuit comprises two battery modules with the same voltage, namely a first battery module and a second battery module, and the multi-stage bidirectional switch comprises a switch handle, a switch cover plate, a switch connecting rod, a switch lower shell, a pole and a first cam;
the four poles are respectively a first pole, a second pole, a third pole and a fourth pole, the positive end of the first battery module is electrically connected with the first pole, the negative end of the first battery module is electrically connected with the second pole, the positive end of the second battery module is electrically connected with the third pole, and the negative end of the second battery module is electrically connected with the fourth pole;
the middle part of the lower switch shell is provided with a cavity, the first cam, the parallel switch and the series switch are positioned in the cavity, one end of the switch connecting rod is connected with the first cam, the other end of the switch connecting rod penetrates through the switch cover plate to be connected with the switch handle, the first cam is rotationally connected with the lower switch shell, four grooves are circumferentially arranged on the first cam, the grooves have two different depths, the depths of the oppositely arranged grooves are the same, the parallel switch comprises a first parallel switch and a second parallel switch, the first parallel switch and the second parallel switch are oppositely arranged, and the series switch is arranged on the side edge of the first parallel switch; when the parallel switch enters a deeper groove, the series switch enters a shallower groove, the parallel switch is closed, the series switch is disconnected, and the second pole is connected with the third pole; when the series switch enters the deeper groove, the parallel switch enters the shallower groove, the series switch is closed, the parallel switch is disconnected, and the first pole, the second pole, the third pole and the fourth pole are connected.
4. The lithium battery pack according to claim 3, further comprising a detection component and a display component, wherein the detection component is connected to the poles, the detection component is electrically connected to the display component, the detection component detects conduction relations between the poles, and judges a serial or parallel connection mode between the battery modules according to the conduction relations, and the display component displays the serial or parallel connection mode.
5. The lithium battery pack of claim 3, wherein the first parallel switch, the second parallel switch, and the series switch each include a second cam, a resilient member, a stationary contact member, and a movable contact member;
one end of the second cam is connected with one end of the elastic component, the other end of the second cam is in contact with the first cam, and the other end of the elastic component is connected with the side edge of the cavity; the static contact component is connected to the side edge of the cavity and is provided with a static contact; the movable contact component is connected to the second cam, two ends of the movable contact component are respectively provided with a movable contact, when the parallel switch is closed, the fixed contact and the movable contact of the first parallel switch are contacted, the fixed contact and the movable contact of the second parallel switch are contacted, the fixed contact and the movable contact of the series switch are far away, when the series switch is closed, the fixed contact and the movable contact of the series switch are contacted, and the fixed contact and the movable contact of the first parallel switch and the movable contact of the second parallel switch are far away; the pole is connected with the static contact component.
6. The lithium battery pack as claimed in claim 3, wherein the switch handle is detachably connected to the other end of the switch link.
7. The lithium battery pack as recited in claim 5, wherein an end of the second cam is provided with an arc structure engaged with the groove, the arc structure contacting the groove.
8. The lithium battery pack as recited in claim 5, wherein the stationary contact assembly is bolted to the switch lower case.
9. The lithium battery pack as claimed in claim 5, wherein the other end of the elastic member is detachably connected to the side of the cavity.
10. The lithium battery pack as claimed in claim 5, wherein the elastic member comprises a compression spring, one end of the compression spring is connected with the second cam, and the other end of the compression spring is connected with the side of the cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010270888.6A CN111584812A (en) | 2020-04-08 | 2020-04-08 | Lithium battery pack |
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| CN202010270888.6A CN111584812A (en) | 2020-04-08 | 2020-04-08 | Lithium battery pack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816817A (en) * | 2020-08-04 | 2020-10-23 | 格力博(江苏)股份有限公司 | Battery pack, tool system and charging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816817A (en) * | 2020-08-04 | 2020-10-23 | 格力博(江苏)股份有限公司 | Battery pack, tool system and charging system |
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Address after: 518000 201 / F, building C, Xinwangda electronics factory, Tangjia community, Fenghuang street, Guangming District, Shenzhen City, Guangdong Province Applicant after: SHENZHEN XWODA ELECTRONICS Co.,Ltd. Address before: 518000 5th floor, building D, Jinye industrial city, Tianliao community, Yutang street, Guangming District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN XWODA ELECTRONICS Co.,Ltd. |
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Inventor after: Cui Wengang Inventor after: Yuan Yong Inventor after: Luo Feiyan Inventor before: Cui Wengang |
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Address after: 518000 201 / F, building C, Xinwangda electronics factory, Tangjia community, Fenghuang street, Guangming District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Xinwangda Energy Technology Co.,Ltd. Address before: 518000 201 / F, building C, Xinwangda electronics factory, Tangjia community, Fenghuang street, Guangming District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN XWODA ELECTRONICS CO.,LTD. |