CN116315508A - Lower plastic plate, battery top cover and battery - Google Patents

Lower plastic plate, battery top cover and battery Download PDF

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Publication number
CN116315508A
CN116315508A CN202310539635.8A CN202310539635A CN116315508A CN 116315508 A CN116315508 A CN 116315508A CN 202310539635 A CN202310539635 A CN 202310539635A CN 116315508 A CN116315508 A CN 116315508A
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CN
China
Prior art keywords
liquid
plastic
plastic plate
plate body
top cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310539635.8A
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Chinese (zh)
Inventor
甘俊凡
张旭东
黄天翔
罗在锋
程飞杨
王万胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chuneng New Energy Co Ltd
Original Assignee
Chuneng New Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chuneng New Energy Co Ltd filed Critical Chuneng New Energy Co Ltd
Priority to CN202310539635.8A priority Critical patent/CN116315508A/en
Publication of CN116315508A publication Critical patent/CN116315508A/en
Pending legal-status Critical Current

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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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/673—Containers for storing liquids; Delivery conduits therefor
    • H01M50/682—Containers for storing liquids; Delivery conduits therefor accommodated in battery or cell casings
    • 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 & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Filling, Topping-Up Batteries (AREA)

Abstract

The embodiment of the invention provides a lower plastic plate, a battery top cover and a battery. The lower plastic plate comprises a plastic plate body, a first supporting portion and a second supporting portion. The plastic plate body is provided with a liquid injection channel; the first supporting part and the second supporting part are respectively arranged at two ends of the plastic plate body in the length direction, and can be abutted to the area, close to the edge, of the winding core so that an interval is formed between the plastic plate body and the winding core, the liquid injection channel is communicated with the liquid cavity, at least one of the first supporting part and the second supporting part is provided with a liquid inlet channel communicated with the liquid cavity, and at least one part of a liquid outlet of the liquid inlet channel can be arranged in a dislocation mode with the winding core in the thickness direction of the plastic plate body so that the liquid injection channel, the liquid cavity and the liquid inlet channel form an electrolyte infiltration channel. The lower plastic plate provided by the embodiment of the invention has the advantages of improving the uniformity of winding core infiltration, the cycle performance of the battery and the processing efficiency.

Description

Lower plastic plate, battery top cover and battery
Technical Field
The invention relates to the technical field of batteries, in particular to a lower plastic plate, a battery top cover with the lower plastic plate and a battery.
Background
The power battery generally comprises a top cover, a winding core, an outer cylinder shell, lower plastic and other structures, wherein the winding core is arranged in the outer cylinder shell, a pole piece extends from the top end of the winding core and is connected with a pole column fixed on the top cover, and a lower plastic plate is arranged between the top cover and the top end of the winding core and insulates the top cover from the winding core through lower plastic.
In the related art, the electrolyte injection channel is arranged in the area close to the middle of the winding core, when the electrolyte is injected or supplemented, as the gap between the top cover and the winding core is smaller, the limiting structure (the first supporting part and the second supporting part) of the lower plastic plate presses the diaphragm, so that the electrolyte cannot directly flow into the two sides of the winding core through the gap between the lower plastic plate and the winding core, and the problem of slow injection speed is caused.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an embodiment of the present invention proposes a lower plastic plate. The lower plastic plate has the advantages of improving the infiltration uniformity of the winding core and the cycle performance of the battery.
The embodiment of the invention also provides a battery top cover.
The embodiment of the invention also provides a battery.
The lower plastic plate comprises a plastic plate body, a first supporting portion and a second supporting portion.
The plastic board body has relative first side and the second side that sets up along its thickness direction, first side be used for with the lamina tecti meets, be equipped with on the plastic board body and annotate the liquid channel, first supporting part with the second supporting part sets up respectively the both ends of the length direction of plastic board body, and can the butt be in on the area that the core is close to the edge in order to make the plastic board body with roll up and have the interval so that form the liquid chamber between the core, annotate the liquid channel with liquid chamber intercommunication, be equipped with on at least one of first supporting part with second supporting part with liquid inlet channel that the liquid chamber intercommunication, at least a portion of liquid outlet of liquid inlet channel can with roll up the core and be in the thickness direction dislocation setting of plastic board body is in order to annotate the liquid channel liquid chamber with liquid inlet channel forms the infiltration passageway of electrolyte.
According to the lower plastic plate disclosed by the embodiment of the invention, the liquid inlet channel communicated with the liquid cavity is formed in at least one of the first supporting part and the second supporting part, at least one part of the liquid outlet of the liquid inlet channel can be arranged in a staggered manner with the winding core in the thickness direction of the plastic plate body so as to form the electrolyte impregnating channel of the electrolyte in the liquid injecting channel, and the electrolyte injecting channel, the liquid cavity and the liquid inlet channel on the plastic plate body can directly flow the electrolyte between the winding core and the outer cylinder shell through the formed impregnating channel from the diaphragm part pressed by the first supporting part and the second supporting part, so that the edge of the winding core can be prevented from blocking the inflow of the electrolyte due to the pressing of the supporting part (the first supporting part and the second supporting part) on the winding core diaphragm, and therefore, the electrolyte injecting speed and the winding core impregnating uniformity are improved, and the advantages of improving the cycle performance and the processing efficiency of a battery are further facilitated.
Therefore, the lower plastic plate provided by the embodiment of the invention has the advantages of improving the uniformity of winding core infiltration, the cycle performance of the battery and the processing efficiency.
In some embodiments, a liquid inlet of the liquid inlet channel is formed in a side wall of one side, connected with the plastic plate body, of at least one of the first support portion and the second support portion, and the liquid inlet of the liquid inlet channel is communicated with the liquid cavity.
In some embodiments, at least one of the first support portion and the second support portion is provided with a liquid containing groove with an opening at a first side, the liquid containing groove extends along the thickness direction of the plastic plate body, a liquid outlet of the liquid inlet channel is arranged on the bottom wall of the liquid containing groove, and a liquid inlet of the liquid inlet channel is arranged on the side wall of the liquid containing groove.
In some embodiments, the first supporting portion and the second supporting portion each include a connecting wall and a supporting bottom wall, the supporting bottom wall can be abutted to an area, close to the edge, of the winding core, the connecting wall and the supporting bottom wall enclose into the containing liquid groove, one side of the connecting wall is connected with the plastic plate body, a liquid outlet of the liquid inlet channel is formed in the supporting bottom wall, and a liquid inlet of the liquid inlet channel is formed in one side of the connecting wall connected with the plastic plate body.
In some embodiments, the plurality of winding cores are stacked, a liquid inlet gap extending along the thickness direction of the plastic plate body is formed between adjacent winding cores, the plurality of liquid outlets of the liquid inlet channel are arranged on the supporting bottom wall at intervals along the width direction of the plastic plate body, and the hydraulic diameter of the liquid outlet is larger than that of the other liquid outlets, which are arranged corresponding to the liquid inlet gap in the thickness direction of the plastic plate body.
In some embodiments, the lower plastic panel further comprises a stiffener portion connected between the support bottom wall of the receiving well and the side wall of the receiving well.
In some embodiments, the liquid inlet of the liquid inlet channel is disposed in a region of the connecting wall adjacent to the supporting bottom wall.
In some embodiments, the first side of the plastic plate body has one of a limit protrusion and a limit groove, and the one of the limit protrusion and the limit groove of the plastic plate body is capable of being mated with the other of the limit protrusion and the limit groove on the top cover plate.
In some embodiments, the lower plastic panel further comprises a stop edge extending along an edge of the second side of the plastic panel body toward a side proximate to the winding core.
In some embodiments, the plastic plate body includes a first plastic sub-plate and a second plastic sub-plate that are sequentially disposed along a length direction of the lower plastic plate, and the first support portion and the second support portion are correspondingly disposed on the first plastic sub-plate and the second plastic sub-plate, and the first plastic sub-plate and the second plastic sub-plate are disposed at intervals.
In some embodiments, the lower plastic plate further includes a plate sinking platform portion and a third supporting portion, the plate sinking platform portion is disposed on the second side of the first plastic plate, the third supporting portion is disposed on the second side of the second plastic plate, the third supporting portion can be abutted to the winding core, and the third supporting portion and the second supporting portion are connected with the second plastic plate at intervals along the length direction of the plastic plate body, and the side wall of the first plastic plate is abutted to the side wall of the second plastic plate.
In some embodiments, the glue plate sinking platform part is provided with a sinking platform groove with an opening towards the first side, and the liquid outlet of the liquid injection channel is arranged on the side wall and/or the bottom wall of the sinking platform groove so as to form the liquid injection channel on the glue plate sinking platform part.
In some embodiments, the glue plate countersink is integrally formed with the first plastic split plate.
In some embodiments, the first support is integrally formed with the first plastic split plate.
In some embodiments, the second support portion is integrally formed with the second plastic split plate.
In some embodiments, the third support portion is integrally formed with the second plastic split plate.
The battery top cover of the embodiment of the invention can comprise a top cover plate and the lower plastic plate of any embodiment, wherein the lower plastic plate is attached to the top cover plate, the top cover plate is provided with a top cover liquid injection port corresponding to the liquid injection channel, and the top cover liquid injection port is communicated with the liquid injection channel.
In some embodiments, the battery top cover according to the embodiment of the present invention further includes a sealing nail, the sealing nail includes a head portion and a main body portion that are connected, a cover plate sink is disposed in a region of the top cover plate opposite to the liquid injection channel, the liquid injection port is disposed on a bottom wall of the cover plate sink, the main body portion is disposed in the liquid injection channel and the liquid injection port in a penetrating manner, the head portion can be abutted to the bottom wall of the cover plate sink, the plastic structure of the top cover further includes a glue plate sink portion, a sink groove having an opening towards the first side is disposed on the glue plate sink portion, a drain port of the liquid injection channel is disposed on a side wall and a bottom wall of the sink groove, and a cross-sectional area of the drain port disposed on the bottom wall of the sink groove is larger than a cross-sectional area of the main body portion.
The battery comprises an outer cylinder shell, a winding core and the battery top cover according to the embodiment of the invention, wherein the winding core is arranged in the outer cylinder shell, the lower plastic plate is arranged between the winding core and the top cover plate, the first supporting part and the second supporting part are abutted to one end of the winding core in the height direction, the plastic plate body and the winding core are arranged at intervals so as to form a liquid cavity, at least one of the first supporting part and the second supporting part is provided with a liquid inlet channel communicated with the liquid cavity, and at least one part of a liquid outlet of the liquid inlet channel and the winding core can be arranged in a dislocation mode in the thickness direction of the plastic plate body so as to form an electrolyte infiltration channel in the liquid injection channel, the liquid cavity and the liquid inlet channel.
In some embodiments, the plurality of winding cores are stacked, a plurality of liquid inlet gaps extending along the thickness direction of the plastic body are formed between adjacent winding cores, the plurality of liquid outlet ports of the liquid inlet channels are arranged on the supporting bottom plate at intervals along the width direction of the plastic body, the hydraulic diameter of the liquid outlet port corresponding to the liquid inlet gaps in the thickness direction of the plastic body is larger than that of the other liquid outlet ports, and the liquid outlet ports of the liquid inlet channels corresponding to the liquid inlet gaps and the liquid inlet gaps are correspondingly arranged in the thickness direction of the plastic body.
Drawings
Fig. 1 is a perspective view of a lower plastic plate according to an embodiment of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is another perspective view of the lower plastic plate according to an embodiment of the present invention.
Fig. 4 is an enlarged view of fig. 3 at B.
Fig. 5 is a bottom view of the lower plastic panel of an embodiment of the present invention.
Fig. 6 is a top view of a lower plastic panel according to an embodiment of the present invention.
Fig. 7 is a perspective view of a first plastic separator plate according to an embodiment of the present invention.
Fig. 8 is a perspective view of a second plastic separator plate according to an embodiment of the present invention.
Fig. 9 is a front view of a battery top cover according to an embodiment of the present invention.
Fig. 10 is a front view of a battery according to an embodiment of the present invention.
Fig. 11 is a schematic view of the mating of a winding core and a battery top cover according to an embodiment of the invention.
Fig. 12 is an enlarged view at C in fig. 11.
Reference numerals:
a battery top cover 100; a winding core 200; an outer cartridge housing 300;
a lower plastic plate 10; a top cover plate 20;
a plastic plate body 1;
a liquid injection passage 11; a post hole 12; a positive electrode post hole 121; a negative electrode post hole 122;
a first plastic split plate 13; a second plastic split plate 14;
a first support part 2; a liquid inlet 21 of the liquid inlet channel; a liquid outlet 22 of the liquid inlet channel;
a second support 3;
a liquid accommodating tank 4; a support bottom wall 41; a connecting wall 42;
a reinforcing rib part 5;
a limit protrusion 6;
a limit edge 7;
a glue plate sinking platform part 8; a third support 9.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The lower plastic plate 10 and the battery top cover 100 and the battery having the lower plastic plate 10 according to the embodiment of the present invention are described below with reference to fig. 1 to 12.
The lower plastic plate 10 of the embodiment of the present invention includes a plastic plate body 1, a first supporting part 2, and a second supporting part 3.
The plastic plate body 1 has a first side (e.g., an upper surface shown in fig. 1 and 10) and a second side (e.g., a lower surface shown in fig. 1 and 10) disposed opposite to each other in a thickness direction thereof, the first side being for attachment with the top cover plate 20, the plastic plate body 1 being provided with a liquid injection passage 11 and a post hole 12, the first support 2 and the second support 3 being disposed at both ends in the length direction of the plastic plate body 1, respectively, and being capable of abutting on an area of the winding core 200 near the edge so as to have a space (e.g., as shown in fig. 10) between the plastic plate body 1 and the winding core 200 so as to form a liquid chamber, the liquid injection passage 11 being in communication with the liquid chamber, at least one of the first support 2 and the second support 3 being provided with a liquid inlet passage communicating with the liquid chamber, at least a portion of a liquid discharge port 22 of the liquid inlet passage being capable of being disposed in offset from the winding core 200 in the thickness direction of the plastic plate body 1 so as to form an electrolyte infiltration passage between the liquid injection passage 11, the liquid chamber and the liquid chamber. It will be appreciated that the inlet of the inlet channel is located near the edge of the winding core 200.
According to the lower plastic plate 10 of the embodiment of the invention, the liquid inlet channel communicated with the liquid cavity is arranged on at least one of the first support part 2 and the second support part 3, and at least one part of the liquid outlet 22 of the liquid inlet channel can be arranged in a staggered manner with the winding core 200 in the thickness direction of the plastic plate body 1 so as to form an electrolyte infiltration channel in the liquid injection channel 11, the liquid cavity and the liquid inlet channel on the plastic plate body 1, and the electrolyte can be directly flowed into the space between the winding core 200 and the outer cylinder shell 300 from the diaphragm part pressed by the first support part 2 and the second support part 3 through the formed infiltration channel, so that the phenomenon that the edge of the winding core 200 is blocked by the pressing of the diaphragm of the support part (the first support part 2 and the second support part 3) on the winding core 200 is avoided, and therefore, the electrolyte injection speed and the electrolyte infiltration uniformity of the winding core 200 are improved, and the advantages of improving the circulation performance and the processing efficiency of a battery are further facilitated.
Therefore, the lower plastic plate 10 of the embodiment of the invention has the advantages of improving the infiltration uniformity of the winding core 200, the cycle performance of the battery and the processing efficiency.
Specifically, the upper surface of the plastic plate body 1 is attached to the lower surface of the top cover plate 20. The upper surface of the plastic plate body 1 is disposed opposite to the upper end surface of the winding core 200 in the up-down direction.
The plastic plate body 1 is also provided with a pole hole 12.
As shown in fig. 1 and 3, a liquid inlet 21 of a liquid inlet channel is arranged on the side wall of one side of at least one of the first support part 2 and the second support part 3 connected with the plastic plate body 1, and the liquid inlet is communicated with the liquid cavity.
In the lower plastic plate 10 of the embodiment of the invention, the liquid inlet 21 of the liquid inlet channel is arranged on the side wall of one side, which is connected with the plastic plate body 1, of at least one of the first supporting part 2 and the second supporting part 3 (in the related art, the side wall is abutted with the diaphragm of the winding core 200 to form a gap for preventing electrolyte from flowing into the adjacent winding core 200 from the side wall, and when the electrolyte is injected, the peripheral wall of the electrolyte tends to flow into the outer cylinder shell 300, but the problem of slow electrolyte injection speed is caused by the fact that the gap between the peripheral direction of the module and the outer cylinder shell 300 is particularly limited, the electrolyte in the liquid cavity can be directly injected into the outer cylinder shell 300 from the side wall, so that the liquid injection speed is greatly improved, and the setting difficulty of the liquid inlet 21 of the liquid inlet channel can be reduced. Therefore, the liquid injection device has the advantage of improving the liquid injection efficiency.
As shown in fig. 1 and 3, at least one of the first support portion 2 and the second support portion 3 is provided with a liquid accommodating groove 4 having an opening on a first side, the liquid accommodating groove 4 extends in a thickness direction of the plastic plate body 1, a liquid discharge port 22 of a liquid inlet passage is provided on a bottom wall 41 of the liquid accommodating groove 4, and a liquid inlet port 21 of the liquid inlet passage is provided on a side wall of the liquid accommodating groove 4. In other words, the first support part 2 is provided with the liquid containing groove 4, or the second support part 3 is provided with the liquid containing groove 4; or, the first support part 2 and the second support part 3 are provided with a liquid accommodating groove 4.
According to the lower plastic plate 10 provided by the embodiment of the invention, the containing liquid groove 4 with the opening at the first side is arranged on at least one of the first supporting part 2 and the second supporting part 3, so that a part of electrolyte can be contained, the pressed part of the winding core 200 can be kept in a soaked state all the time, and the space utilization rate of the inside of the battery is improved. In addition, the weight of the whole lower plastic sheet 10 can be reduced by providing the containing liquid tank 4, and the energy density of the winding core 200 can be improved.
Optionally, the liquid containing groove 4 extends along the thickness direction of the plastic plate body 1, the liquid containing groove 4 is formed in the first supporting portion 2 and the second supporting portion 3, the liquid inlet of the liquid inlet channel is formed in the side wall of one side, connected with the plastic plate body 1, of the first supporting portion 2 and the second supporting portion 3, and the liquid inlet of the liquid inlet channel is communicated with the liquid containing groove 4.
As shown in fig. 3 and 4, the first supporting portion 2 and the second supporting portion 3 each include a supporting bottom wall 41 and a connecting wall 42, the supporting bottom wall 41 can be abutted on an area of the winding core 200 near the edge, the connecting wall 42 and the supporting bottom wall 41 enclose a containing liquid tank 4, one side of the connecting wall 42 is connected with the plastic plate body 1, a liquid outlet 22 of the liquid inlet channel is formed in the supporting bottom wall 41, and the liquid inlet 21 of the liquid inlet channel is formed in one side of the connecting wall 42 connected with the plastic plate body 1.
According to the lower plastic plate 10 provided by the embodiment of the invention, the liquid inlet 21 of the liquid inlet channel is arranged on one side of the connecting wall 42 connected with the plastic plate body 1, so that the difficulty of opening the liquid inlet of the liquid inlet channel can be reduced, and the electrolyte in the liquid cavity can flow into the liquid inlet channel. Therefore, the device has the advantage of simple structure. In addition, the edge of the winding core 200 corresponding to the liquid inlet is guaranteed to be in a soaking state all the time. This has the advantage of further improving the capacity of the battery and its cycle life.
As shown in fig. 3 and 4, the liquid inlet 21 of the liquid inlet passage is provided in the area of the connecting wall 42 near the support bottom wall 41.
In the lower plastic plate 10 according to the embodiment of the present invention, the liquid inlet 21 passing through the liquid inlet channel is provided in the area of the connecting wall 42 near the supporting bottom wall 41. The electrolyte can flow into the liquid inlet channel from the liquid cavity in time, so that the electrolyte is prevented from forming liquid accumulation in the liquid cavity to reduce the flow speed of the electrolyte.
Specifically, as shown in fig. 1 and 3, the support bottom wall 41 is provided with a plurality of liquid discharge ports 22 for liquid inlet passages. The portions of the plurality of liquid discharge ports may be provided corresponding to the winding cores 200 in the thickness direction of the plastic sheet 1 of the winding cores 200, and the electrolyte may be allowed to flow between the winding cores 200. Thus, the winding core 200 has the advantage of good infiltration effect.
Alternatively, the liquid inlets on the first support part 2 and the second support part 3 may each have a plurality of liquid inlets.
Further, the lower plastic plate 10 may be injection-molded with the corresponding receiving liquid grooves 4 at the corresponding positions of the first support part 2 and the second support part 3 by injection molding. It will be appreciated that a portion of the lower surface of the first support 2 projects downwardly relative to the remainder of the first support 2 to form the first support 2, and a portion of the upper surface of the first support 2 projects downwardly relative to the remainder of the first support 2 to form the first receiving recess. Similarly, a portion of the lower surface of the second support 3 projects downwardly relative to the remainder of the second support 3 to form the second support 3, and a portion of the upper surface of the second support 3 projects downwardly relative to the remainder of the second support 3 to form the second receiving well. Therefore, the method has the advantage of high processing convenience.
As shown in fig. 1 and 3, the plurality of winding cores 200 are stacked, and the adjacent winding cores 200 have a liquid inlet gap extending in the thickness direction of the plastic sheet body 1, the liquid discharge ports 22 of the liquid inlet channel have a plurality of liquid discharge ports which are arranged on the support bottom wall 41 at intervals in the width direction of the plastic sheet body 1, wherein the hydraulic diameter of the liquid discharge ports arranged corresponding to the liquid inlet gap in the thickness direction of the plastic sheet body 1 is larger than that of the other liquid discharge ports.
According to the lower plastic plate 10 provided by the embodiment of the invention, the hydraulic diameter of the liquid outlet is larger than that of other liquid outlets by arranging the liquid outlet corresponding to the liquid inlet gap in the thickness direction of the plastic plate body 1, so that most of electrolyte flows into the outer cylinder shell 300 through the liquid outlet corresponding to the liquid inlet gap, and the electrolyte flowing from the liquid outlet is not blocked, and the advantage of high electrolyte circulation speed is achieved.
The lower plastic plate 10 further comprises a reinforcing rib portion 5, the reinforcing rib portion 5 being connected between the supporting bottom wall 41 of the liquid containing tank 4 and the side wall of the liquid containing tank 4. Thus, the lower plastic sheet 10 has an advantage of high structural strength.
Further, as shown in fig. 1 and 3, the reinforcing rib portion 5 has a plurality of reinforcing rib portions 5, and the plurality of reinforcing rib portions 5 are provided at intervals in the width direction of the plastic plate body 1. Thereby, the structural strength of the lower plastic plate 10 is further improved.
As shown in fig. 1 and 3, the first side of the plastic plate body 1 has one of a limit protrusion 6 and a limit groove so as to be able to be engaged with the other of the limit protrusion 6 and the limit groove on the cover plate. In other words, the first side of the plastic plate body 1 has a limiting protrusion 6, and the top cover plate 20 has a limiting groove. Or the first side of the plastic plate body 1 is provided with a limiting groove, the top cover plate 20 is provided with a limiting protrusion 6, and the limiting protrusion 6 is clamped in the limiting groove.
The lower plastic plate 10 of the embodiment of the present invention is matched with one of the limit protrusion 6 and the limit groove on the top cover plate 20 by having the limit protrusion 6 and the limit groove on the first side of the plastic plate body 1. Therefore, the problem of deflection of the lower plastic plate 10 is prevented, and the stability of the cooperation between the top cover plate 20 and the lower plastic plate 10 can be improved.
As shown in fig. 1 and 7, the lower plastic panel 10 further includes a limiting rim 7, the limiting rim 7 extends along the edge of the second side of the plastic panel body 1 toward the side close to the winding core 200, and the limiting rim 7 abuts against the outer side wall of the winding core 200. And further limit the winding core 200 by the limit edge 7. Thus, the stability of the fit between the winding core 200 and the lower plastic sheet 10 can be improved.
For example, as shown in fig. 1 and 10, a limiting rim 7 is provided on the lower surface of the plastic plate body 1, and the limiting rim 7 is disposed opposite to each other in the front-rear direction shown in fig. 3.
As shown in fig. 1 and 7, the plastic plate body 1 includes a first plastic sub-plate 13 and a second plastic sub-plate 14 sequentially disposed along a length direction of the lower plastic plate 10, the first support part 2 and the second support part 3 are correspondingly disposed on the first plastic sub-plate 13 and the second plastic sub-plate 14, the first plastic sub-plate 13 and the second plastic sub-plate 14 are disposed at a distance, the post hole 12 includes a positive post hole 121 and a negative post hole 122, the positive post hole 121 is disposed on the first plastic sub-plate 13, and the negative post hole 122 is disposed on the second plastic sub-plate 14.
The lower plastic plate 10 of the embodiment of the present invention is formed by dividing the plastic plate body 1 into a first plastic sub-plate 13 and a second plastic sub-plate 14 which are spaced apart. Because, lower plastic board 10 is at the thermal expansion shrinkage of environmental change, can effectually reduce the laminating relaxation that deformation brought, can avoid appearing the circumstances that plastic tension is big and bending deformation and avoid the problem of gas leakage or weeping that the sealing washer is not hard up and lead to. Therefore, the yield of battery production is improved.
Alternatively, the first plastic part plate 13 and the second plastic part plate 14 are spaced 1mm-2mm apart.
Alternatively, the vicinity of the periphery of the positive electrode post hole 121 of the first plastic partial plate 13 is upwardly protruded and is engaged with the top cover plate 20, and the vicinity of the periphery of the negative electrode post hole 122 of the second plastic partial plate 14 is upwardly protruded and is engaged with the top cover plate 20.
Specifically, the first plastic sub-plate 13 and the second plastic sub-plate 14 are provided with limiting edges 7. Further, the stopper edges 7 may be oppositely disposed in the width direction of the first plastic part plate 13 so as to prevent the first plastic part plate 13 from being displaced with the winding core 200 in the front-rear direction shown in fig. 1.
The lower plastic plate 10 of the embodiment of the invention further comprises a plastic plate sinking platform part and a third supporting part 9, wherein the plastic plate sinking platform part is arranged on the second side of the first plastic plate, the third supporting part 9 is arranged on the second side of the second plastic plate 14, the third supporting part 9 can be abutted on the winding core 200, the third supporting part 9 and the second supporting part 3 are connected with the second plastic plate 14 at intervals along the length direction of the plastic plate body 1, and the side wall of the first plastic plate 13 is abutted with the side wall of the second plastic plate 14.
According to the lower plastic plate 10 disclosed by the embodiment of the invention, the third supporting part 9 and the second supporting part 3 are arranged on the second plastic dividing plate 14 at intervals along the length direction of the plastic plate body 1, and the side wall of the first plastic dividing plate 13 is abutted with the side wall of the second plastic dividing plate 14, so that the first plastic dividing plate 13 and the second plastic dividing plate 14 have the function of stably supporting, and the problem that the first plastic dividing plate 13 and the second plastic dividing plate 14 are easy to deviate due to unbalanced stress is solved.
As shown in fig. 1 and 3, the sinking table portion 8 of the rubber plate is provided with a sinking table groove having an opening toward the first side, and the liquid discharge port of the liquid injection passage 11 is provided on the side wall and/or the bottom wall of the sinking table groove so as to form the liquid injection passage 11 on the sinking table portion 8 of the rubber plate.
In the lower plastic plate 10 of the embodiment of the invention, the liquid discharge port of the liquid injection channel 11 is arranged on the side wall and/or the bottom wall of the sinking table groove through the sinking table groove arranged on the plastic plate sinking table part 8 so as to form the liquid injection channel 11. Thus, the length of the pouring channel 11 can be increased, whereby the stability of pouring can be improved.
As shown in fig. 1 and 3, the slab-sinking stage 8 is integrally formed with the first plastic split plate 13. Therefore, the structure has the advantage of good structural integrity.
As shown in fig. 1 and 3, the first supporting portion 2 is integrally formed with the first plastic split plate 13. Therefore, the structure has the advantage of good structural integrity.
As shown in fig. 1 and 3, the second supporting portion 3 is integrally formed with the second plastic split plate 14; therefore, the structure has the advantage of good structural integrity.
As shown in fig. 1 and 3, the third supporting portion 9 is integrally formed with the second plastic split plate 14. Therefore, the structure has the advantage of good structural integrity.
As shown in fig. 9, the battery top cover 100 according to the embodiment of the present invention includes a top cover plate 20 and any one of the lower plastic plates 10, the lower plastic plate 10 is attached to the top cover plate 20, and the top cover plate 20 is provided with a liquid filling port corresponding to the liquid filling channel 11. Therefore, the battery top cover 100 of the embodiment of the invention has the advantages of being beneficial to improving the infiltration uniformity of the winding core 200, the cycle performance of the battery and the processing efficiency.
The battery top cover 100 of the embodiment of the invention further comprises a sealing nail, the sealing nail comprises a head part and a main body part which are connected, a cover plate sinking groove is arranged in the area of the top cover plate 20 opposite to the liquid injection channel 11, the liquid injection port is arranged on the bottom wall of the cover plate sinking groove, the main body part is arranged in the liquid injection channel 11 and the liquid injection port in a penetrating way, the head part can be abutted on the bottom wall of the cover plate sinking groove, and the cross section area of a liquid outlet on the bottom wall of the sinking groove is larger than that of the main body part.
According to the battery top cover 100 disclosed by the embodiment of the invention, the liquid cavity can be sealed after the liquid injection is completed through the arranged sealing nails, so that the electrolyte is prevented from flowing out, and the service life of the battery top cover is prolonged. In addition, the main body part is in clearance fit in the liquid injection channel 11, so that the applicability of the sealing nail can be improved. Therefore, the portable electric heating device has the advantage of high use convenience.
Optionally, the cross-sectional area of the body portion increases in a direction from its free end to the head portion.
As shown in fig. 10 to 12, the battery according to the embodiment of the invention includes an outer cylinder case 300, a winding core 200 and the battery top cover 100 described above, the winding core 200 is disposed in the outer cylinder case 300, a lower plastic plate 10 is disposed between the winding core 200 and the top cover 20, a first support portion 2 and a second support portion 3 are abutted against one end of the winding core 200, the plastic plate body 1 and the winding core 200 are disposed at intervals so as to form a liquid chamber, at least one of the first support portion 2 and the second support portion 3 is provided with a liquid inlet channel communicating with the liquid chamber, and at least a part of a liquid outlet 22 of the liquid inlet channel can be disposed in dislocation with the winding core 200 in the thickness direction of the plastic plate body 1 so as to form a wetting channel of electrolyte in the liquid injection channel 11, the liquid chamber and the liquid inlet channel. Therefore, the battery provided by the embodiment of the invention has the advantage of good cycle performance.
Optionally, the plurality of winding cores 200 are stacked, and a liquid inlet gap extending along the thickness direction of the plastic plate body 1 is formed between the adjacent winding cores 200, the liquid outlet 22 of the liquid inlet channel is provided with a plurality of liquid outlets which are arranged on the supporting bottom wall 41 at intervals along the width direction of the plastic plate body 1, wherein the hydraulic diameter of the liquid outlet corresponding to the liquid inlet gap in the thickness direction of the plastic plate body 1 is larger than that of the other liquid outlets, and the liquid inlet gap is arranged in a dislocation manner in the thickness direction of the plastic plate body 1 corresponding to the liquid outlet and the winding cores 200 in the thickness direction of the plastic plate body 1.
According to the battery pack provided by the embodiment of the invention, the hydraulic diameter of the liquid outlet of the liquid inlet channel is larger than that of the liquid outlets of other liquid outlets, which are correspondingly arranged in the thickness direction of the plastic plate body 1, and the liquid inlet gap is correspondingly arranged in the thickness direction of the plastic plate body 1, so that the liquid outlet of most electrolyte corresponding to the liquid inlet gap can flow into the outer cylinder shell 300 without blocking the electrolyte flowing from the liquid outlet of the liquid inlet channel, and the battery pack further has the advantage of improving the electrolyte flowing speed.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (14)

1. Lower plastic board, its characterized in that, lower plastic board is used for spacing core and lamina tecti, lower plastic board includes:
the plastic plate body is provided with a first side and a second side which are oppositely arranged along the thickness direction of the plastic plate body, the first side is used for being connected with the top cover plate, and the plastic plate body is provided with a liquid injection channel;
the first supporting part and the second supporting part are respectively arranged at two ends of the plastic plate body in the length direction, and can be abutted to the area, close to the edge, of the winding core, so that the plastic plate body and the winding core are provided with intervals so as to form a liquid cavity, the liquid injection channel is communicated with the liquid cavity, at least one of the first supporting part and the second supporting part is provided with a liquid inlet channel communicated with the liquid cavity, and at least one part of a liquid outlet of the liquid inlet channel can be staggered with the winding core in the thickness direction of the plastic plate body so as to form an electrolyte infiltration channel of the liquid injection channel, the liquid cavity and the liquid inlet channel.
2. The lower plastic plate according to claim 1, wherein a liquid inlet of the liquid inlet channel is formed in a side wall of one side, connected with the plastic plate body, of at least one of the first support portion and the second support portion, and the liquid inlet of the liquid inlet channel is communicated with the liquid cavity.
3. The lower plastic plate according to claim 2, wherein at least one of the first support portion and the second support portion is provided with a liquid containing groove having an opening at a first side, the liquid containing groove extends in a thickness direction of the plastic plate body, a liquid outlet of the liquid inlet channel is provided on a bottom wall of the liquid containing groove, and a liquid inlet of the liquid inlet channel is provided on a side wall of the liquid containing groove.
4. A lower plastic plate according to claim 3, wherein the first supporting portion and the second supporting portion each comprise a connecting wall and a supporting bottom wall, the supporting bottom wall can be abutted against an area, close to the edge, of the winding core, the connecting wall and the supporting bottom wall enclose the containing liquid groove, one side of the connecting wall is connected with the plastic plate body, a liquid outlet of the liquid inlet channel is formed in the supporting bottom wall, and a liquid inlet of the liquid inlet channel is formed in one side, connected with the plastic plate body, of the connecting wall.
5. The lower plastic panel according to claim 4, wherein,
the plurality of winding cores are arranged in a stacked manner, liquid inlets extending along the thickness direction of the plastic plate body are arranged between adjacent winding cores, the plurality of liquid outlets of the liquid inlets are arranged on the supporting bottom wall at intervals along the width direction of the plastic plate body, and the hydraulic diameter of the liquid outlet corresponding to the liquid inlets in the thickness direction of the plastic plate body is larger than that of the other liquid outlets;
and/or, further comprising a reinforcing rib portion connected between the supporting bottom wall of the liquid containing tank and the side wall of the liquid containing tank;
and/or the liquid inlet of the liquid inlet channel is arranged in the area of the connecting wall, which is close to the bottom wall of the support.
6. The lower plastic panel of claim 1, wherein the first side of the plastic panel body has one of a limit projection and a limit groove, the one of the plastic panel body having a limit projection and a limit groove capable of mating with the other of the limit projection and the limit groove on the top cover plate;
and/or, the plastic plate further comprises a limiting edge, and the edge of the limiting edge on the second side of the plastic plate extends towards one side close to the winding core.
7. The lower plastic panel according to any one of claims 1 to 6, wherein the plastic panel body includes a first plastic part and a second plastic part sequentially disposed along a length direction of the lower plastic panel, the first support portion and the second support portion being disposed on the first plastic part and the second plastic part, respectively, the first plastic part and the second plastic part being disposed at a distance from each other.
8. The lower plastic panel of claim 7, further comprising a panel countersink and a third support, the panel countersink being disposed on the second side of the first plastic panel, the third support being disposed on the second side of the second plastic panel, the third support being capable of abutting the winding core, and the third support and the second support being connected to the second plastic panel in spaced relation along the length of the plastic panel, the side wall of the first plastic panel abutting the side wall of the second plastic panel.
9. The lower plastic plate according to claim 8, wherein a sinking platform groove with an opening towards the first side is arranged on the plastic plate sinking platform part, and a liquid outlet of the liquid injection channel is arranged on the side wall and/or the bottom wall of the sinking platform groove so as to form the liquid injection channel on the plastic plate sinking platform part.
10. The lower plastic panel of claim 8, wherein the panel countersink is integrally formed with the first plastic panel;
and/or, the first supporting part and the first plastic split plate are integrally formed;
and/or the second supporting part and the second plastic split plate are integrally formed;
and/or the third supporting part and the second plastic split plate are integrally formed.
11. A battery top cover, characterized by comprising a top cover plate and a lower plastic plate according to any one of claims 1-10, wherein the lower plastic plate is attached to the top cover plate, a top cover liquid injection port corresponding to the liquid injection channel is arranged on the top cover plate, and the top cover liquid injection port is communicated with the liquid injection channel.
12. The battery top cover according to claim 11, further comprising a sealing nail, wherein the sealing nail comprises a head part and a main body part which are connected, a cover plate sinking groove is arranged in a region of the top cover plate opposite to the liquid injection channel, the liquid injection port is arranged on the bottom wall of the cover plate sinking groove, the main body part is arranged in the liquid injection channel and the liquid injection port in a penetrating manner, the head part can be abutted on the bottom wall of the top cover plate, the plastic structure of the top cover further comprises a rubber plate sinking table part, a sinking table groove with an opening towards the first side is arranged on the rubber plate sinking table part, the liquid outlet of the liquid injection channel is arranged on the side wall and the bottom wall of the sinking table groove, and the cross section area of the liquid outlet on the bottom wall of the sinking table groove is larger than that of the main body part.
13. The battery is characterized by comprising an outer cylinder shell, a winding core and a battery top cover according to claim 11 or 12, wherein the winding core is arranged in the outer cylinder shell, the lower plastic plate is arranged between the winding core and the top cover plate, the first supporting part and the second supporting part are in butt joint with one end of the winding core in the height direction, the plastic plate body and the winding core are arranged at intervals so as to form a liquid cavity, at least one of the first supporting part and the second supporting part is provided with a liquid inlet channel communicated with the liquid cavity, and at least one part of a liquid outlet of the liquid inlet channel can be arranged in a dislocation mode with the winding core in the thickness direction of the plastic plate body so as to form an electrolyte infiltration channel of the liquid injection channel, the liquid cavity and the liquid inlet channel.
14. The battery according to claim 13, wherein the winding cores are provided in a plurality, the winding cores are stacked, liquid inlets extending in a thickness direction of the plastic plate body are provided between adjacent winding cores, the liquid outlets of the liquid inlets are provided in a plurality, the liquid outlets are provided on the support base plate at intervals in a width direction of the plastic plate body, hydraulic diameters of the liquid outlets corresponding to the liquid inlets in the thickness direction of the plastic plate body are larger than hydraulic diameters of the other liquid outlets, and the liquid outlets of the liquid inlets corresponding to the liquid inlets and the liquid inlets are provided corresponding to the thickness direction of the plastic plate body.
CN202310539635.8A 2023-05-11 2023-05-11 Lower plastic plate, battery top cover and battery Pending CN116315508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310539635.8A CN116315508A (en) 2023-05-11 2023-05-11 Lower plastic plate, battery top cover and battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310539635.8A CN116315508A (en) 2023-05-11 2023-05-11 Lower plastic plate, battery top cover and battery

Publications (1)

Publication Number Publication Date
CN116315508A true CN116315508A (en) 2023-06-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310539635.8A Pending CN116315508A (en) 2023-05-11 2023-05-11 Lower plastic plate, battery top cover and battery

Country Status (1)

Country Link
CN (1) CN116315508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116581467A (en) * 2023-07-12 2023-08-11 深圳海辰储能控制技术有限公司 Lower plastic, top cover assembly, energy storage device and electric equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116581467A (en) * 2023-07-12 2023-08-11 深圳海辰储能控制技术有限公司 Lower plastic, top cover assembly, energy storage device and electric equipment
CN116581467B (en) * 2023-07-12 2023-10-03 深圳海辰储能控制技术有限公司 Lower plastic, top cover assembly, energy storage device and electric equipment

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