CN114851863A - Detachable lithium battery charging protection assembly - Google Patents
Detachable lithium battery charging protection assembly Download PDFInfo
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- CN114851863A CN114851863A CN202210469724.5A CN202210469724A CN114851863A CN 114851863 A CN114851863 A CN 114851863A CN 202210469724 A CN202210469724 A CN 202210469724A CN 114851863 A CN114851863 A CN 114851863A
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- card
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- side wall
- charging protection
- main body
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 51
- 238000005452 bending Methods 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- 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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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a detachable lithium battery charging protection assembly which comprises a fire extinguisher and a card combined lithium battery charging protection box, wherein the charging protection box comprises two first side wall cards, two second side wall cards and a box bottom card; under the equipment state of protection case charges, the first card main part plane portion parallel arrangement of two first lateral wall cards, the second card main part plane portion parallel arrangement of two second lateral wall cards, the side tip of two second lateral wall cards is connected to every first lateral wall card, makes two first lateral wall cards and two second lateral wall card joint through the joint cooperation constitute the protection case main part that charges, the bottom of the case card is located bottom in the protection case main part that charges, the fire extinguisher setting is on a first lateral wall card, or a second lateral wall card, or the bottom of the case card towards the inside one surface of protection case that charges, has reached safe in utilization, the dismouting is convenient, cost-effective technical effect.
Description
Technical Field
The invention relates to the technical field of battery charging protection, in particular to a detachable lithium battery charging protection assembly.
Background
The market of the electric vehicle in China is high in stock quantity and high in speed increasing speed, and potential safety hazards brought by charging of the battery of the electric vehicle come along with the market. At the district that does not have the electric motor car to fill electric pile, or have the condition of trading electric charge, often need take off the battery of electric motor car from the car and charge, and common lithium cell often leads to the inside divider membrane of battery to break when receiving reasons such as extrusion, puncture, high temperature, circuit short circuit, ageing, crowd and explode the battery, produce the conflagration to produce combustible gas, if this lithium cell charges at integral charging protection incasement, under the untimely condition of integral charging protection incasement exhaust, cause the explosion easily.
Disclosure of Invention
Based on the above situation, the main objective of the present invention is to provide a detachable lithium battery charging protection assembly, which can overcome the above drawbacks of the prior art, and is very convenient to disassemble and assemble and convenient to use.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a detachable lithium battery charging protection assembly which comprises a fire extinguisher and a card combined lithium battery charging protection box, wherein the charging protection box is used for placing a lithium battery and the fire extinguisher in the box so as to provide fire extinguishing protection when the lithium battery is charged;
each first side wall card comprises a first card main body plane part and two first clamping parts, wherein the two first clamping parts are respectively positioned at the top end and the bottom end of the first card main body plane part, and the two first clamping parts are respectively vertical to the first card main body plane part and positioned at the same side of the first card main body plane part; each first clamping part is provided with a first clamping groove and a second clamping groove near the two end parts;
each second side wall card comprises a second card main body plane part and two second clamping parts, the two second clamping parts are respectively positioned at the top end and the bottom end of the second card main body plane part, and the two second clamping parts are respectively vertical to the second card main body plane part and positioned at the same side of the second card main body plane part; each second clamping part is provided with a first buckle and a second buckle near two ends respectively and used for clamping the first clamping groove and the second clamping groove;
in an assembly state of the charging protection box, first card main body plane portions of two first side wall cards are arranged in parallel, second card main body plane portions of two second side wall cards are arranged in parallel, each first side wall card is connected with side end portions of the two second side wall cards, the first clamping groove is matched with the first buckle, the second clamping groove is matched with the second buckle, so that the two first side wall cards and the two second side wall cards are connected in a clamping mode to form the charging protection box main body, the box bottom card is located at the bottom in the charging protection box main body, and the box bottom card is supported by a first clamping portion located at the bottom end of each first side wall card and a second clamping portion located at the bottom end of each second side wall card;
the fire extinguisher is arranged on one surface of the first side wall clamping piece, the second side wall clamping piece or the box bottom clamping piece facing the inside of the charging protection box.
Preferably, a U-shaped groove is formed in the first card main body plane part of the at least one first side wall card and/or the second card main body plane part of the at least one second side wall card, so that the part encircled by the U-shaped groove becomes a fire extinguisher hanging lug; the fire extinguisher comprises a fire extinguisher suspension structure, and the fire extinguisher can be hung on the fire extinguisher suspension convex sheet through the fire extinguisher suspension structure.
Preferably, the first buckle and the second buckle are the same in structural form and opposite in buckling direction.
Preferably, the first buckle and the second buckle are strip-shaped elastic buckles, each strip-shaped elastic buckle comprises a root and a free end, and the distance between the two roots of the two strip-shaped elastic buckles on the same clamping portion is smaller than the distance between the two free ends.
Preferably, each strip-shaped elastic buckle sequentially comprises a first bent-up part, a first plane part and a second bent-up part from the root to the free end, and the first bent-up part and the second bent-up part are bent up towards the direction far away from the second card main body plane part.
Preferably, the first card slot and the second card slot have the same structural form.
Preferably, the first clamping groove and the second clamping groove are both trapezoidal clamping grooves, in an assembled state of the charging protection box, a longer one of the two parallel sides in the trapezoid is closer to the root of the strip-shaped elastic buckle, and the length of the side of the longer one of the two sides is greater than the width of the strip-shaped elastic buckle.
Preferably, the first side wall clamping sheet and the second side wall clamping sheet are both sheet metal parts; the two first clamping parts are integrally formed at the top end and the bottom end of the first card main body plane part in a bending mode, and the two second clamping parts are integrally formed at the top end and the bottom end of the second card main body plane part in a bending mode; the first buckle and the second buckle are formed by blanking and bending corresponding parts of the second clamping portion, and the first clamping groove and the second clamping groove are formed by blanking corresponding parts of the first clamping portion.
Preferably, a wire passing hole is formed in one first side wall clamping sheet and/or one second side wall clamping sheet, and a charging wire of the lithium battery can pass through the wire passing hole.
Preferably, each first side wall card and each second side wall card are provided with a wire passing hole for a charging wire of the lithium battery to pass through.
The invention provides a detachable lithium battery charging protection component, which is mainly designed for the condition of vehicle-electricity separated charging, because a card combined lithium battery charging protection box is not provided with a top cover, dangerous gas can not be compressed in a small space, the condition that the charging protection box hurts people due to explosion can not occur, and the charging protection box is formed by splicing a plurality of cards, is simple to assemble, saves cost, and has the advantages of being free to disassemble, free to take along, free to occupy redundant space and the like.
Other advantages of the present invention will be described in the detailed description, and those skilled in the art will understand the technical features and technical solutions presented in the description.
Drawings
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 is a schematic perspective view of a detachable lithium battery charging protection assembly according to a preferred embodiment of the present invention;
fig. 2 is a schematic perspective view of a preferred embodiment of a card-combined lithium battery charging protection box according to the present invention;
fig. 3 is a partial perspective view of a preferred embodiment of a card-combined lithium battery charging protection box according to the present invention;
FIG. 4 is a schematic perspective view of a preferred embodiment of a second side wall card according to the present invention;
FIG. 5 is a schematic perspective view of another preferred embodiment of a second side wall card according to the present invention;
FIG. 6 is a schematic perspective view of another preferred embodiment of a second side wall card according to the present invention;
FIG. 7 is a schematic partial perspective view of another preferred embodiment of a second side wall card according to the present invention;
FIG. 8 is a schematic perspective view of a preferred embodiment of a first side wall card according to the present invention;
fig. 9 is a schematic perspective view of a preferred embodiment of a bottom card according to the present invention.
The reference numbers illustrate:
Detailed Description
The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in order to avoid obscuring the nature of the present invention, well-known methods, procedures, and components have not been described in detail.
Furthermore, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In a first aspect, referring to fig. 1 to 9, the present invention provides a detachable lithium battery charging protection assembly, comprising a fire extinguisher 300 and a card-combined lithium battery charging protection box 100, wherein the charging protection box 100 is used for placing a lithium battery 200 and the fire extinguisher 300 in the box so as to provide fire extinguishing protection when the lithium battery 200 is charged, and the charging protection box 100 comprises two first side wall cards 110, two second side wall cards 120 and a box bottom card 130;
each first side wall card 110 includes a first card main body plane portion 111 and two first clamping portions 112, the two first clamping portions 112 are respectively located at the top end and the bottom end of the first card main body plane portion 111, and the two first clamping portions 112 are respectively perpendicular to the first card main body plane portion 111 and located at the same side of the first card main body plane portion 111; each first clamping portion 112 is provided with a first clamping groove 1121 and a second clamping groove 1122 near two ends;
each second side wall card 120 includes a second card main body plane portion 121 and two second clamping portions 122, the two second clamping portions 122 are respectively located at the top end and the bottom end of the second card main body plane portion 121, and the two second clamping portions 122 are respectively perpendicular to the second card main body plane portion 121 and located at the same side of the second card main body plane portion 121; each second clamping portion 122 is provided with a first buckle 1221 and a second buckle 1222 near two ends thereof, respectively, for clamping the first clamping groove 1121 and the second clamping groove 1122;
in an assembled state of the charging protection box, the first card body plane portions 111 of the two first side wall cards 110 are arranged in parallel, the second card body plane portions 121 of the two second side wall cards 120 are arranged in parallel, each first side wall card 110 is connected with the side end portions of the two second side wall cards 120, the first clamping groove 1121 is matched with the first buckle 1221, and the second clamping groove 1122 is matched with the second buckle 1222, so that the two first side wall cards 110 are connected with the two second side wall cards 120 in a clamping manner to form the charging protection box main body, the box bottom card 130 is located at the bottom in the charging protection box main body, and the box bottom card 130 is supported by the first clamping portion 112, located at the bottom end, of each first side wall card 110 and the second clamping portion 122, located at the bottom end, of each second side wall card 120;
the fire extinguisher 300 is disposed on a surface of a first sidewall card 110, or a second sidewall card 120, or the case bottom card 130 facing the inside of the charging protection case.
The invention discloses a detachable lithium battery charging protection component, which is mainly designed for the condition of vehicle-electricity separated charging, after a lithium battery is taken down from an electric vehicle, the lithium battery is placed into a card combined lithium battery charging protection box in an assembly state to be charged, because the lithium battery charging protection box is not provided with a top cover, dangerous gas can not be compressed in a small space, even if the lithium battery breaks at a separation membrane, the temperature rises rapidly, the heat productivity is increased instantly, but because the dangerous gas is removed in time, the condition that the charging protection box hurts people due to explosion can not occur, for different model specifications, the heating rate after damage, lithium batteries with different heat productivity have great compatibility, generally, as long as the volume of the lithium battery can be fully placed into the box, and the setting space for a fire extinguisher is reserved.
Meanwhile, the charging protection box is formed by splicing a plurality of cards, is simple to assemble, saves cost, has the advantages of being free to disassemble, capable of being taken along with the lithium battery, free of occupying redundant space and the like, can be assembled when the lithium battery needs to be charged, can be disassembled and stored after charging is finished, and obviously reduces the occupation of space after storage. The clamping connection between the side wall cards is convenient to operate, simple and easy to implement, the box bottom cards are directly placed in the charging protection box main body and are supported by the first clamping portion, located at the bottom end, of each first side wall card and the second clamping portion, located at the bottom end, of each second side wall card, an additional fixing structure is not needed to be designed, the operation step of specially fixing the box bottom cards is also saved, and the charging protection box is particularly suitable for daily charging protection of lithium batteries of electric vehicles by common electric vehicle consumers.
Furthermore, the charging protection box and the fire extinguisher are matched for use, the fixing mode of the fire extinguisher in the charging protection box is not limited, for example, the fire extinguisher can be fixed in the charging protection box in a simple and easy way such as sticking, and the side wall cards provide the fixing surface of the fire extinguisher; or the fire extinguisher can be directly placed on the side surface of the box bottom card facing the inside of the protection box without sticking. The fire extinguisher can be selected as, for example, a high-temperature trigger type fire extinguisher, if the battery reacts due to self reasons, when an open fire occurs, the fire extinguisher in the protection box is automatically started immediately to extinguish the open fire, gas generated by the battery reaction and gas generated by the fire extinguishing device can be safely discharged from the upper part of the protection box, and the explosion condition is also avoided.
Preferably, the first card body plane portion 111 of the at least one first sidewall card 110 and/or the second card body plane portion 121 of the at least one second sidewall card 120 are provided with U-shaped grooves 1227, so that the portion surrounded by the U-shaped grooves 1227 becomes the fire extinguisher hanging tab 1228; the fire extinguisher 300 includes a fire extinguisher suspension structure (not shown in the drawings) by which the fire extinguisher 300 can be hung on the fire extinguisher suspension tab 1228.
Taking fig. 6 as an example, a U-shaped groove 1227 can be formed in the second card main body plane portion 121 of one second side wall card 120, and a portion surrounded by the U-shaped groove 1227 becomes a fire extinguisher hanging lug 1228 capable of being used for hanging a fire extinguisher. Further, if this fire extinguisher is not triggered the use in this charging process, in next charging process, this fire extinguisher can used repeatedly, this fire extinguisher's reinstallation location also can realize through hanging on fire extinguisher suspension convex piece easily and conveniently, compare and paste the fire extinguisher at every turn and fix on the lateral wall card, fixed reliable degree and convenience degree have been taken into account to the fixed mode that this preferred embodiment provided, needn't worry to paste the inefficacy, also need not to set up the viscose at fire extinguisher corresponding part specially at every turn and just paste the location with the fire extinguisher, also need not specially to go to destroy the viscose when dismantling the fire extinguisher.
Preferably, the first catch 1221 and the second catch 1222 have the same structure and opposite catching directions.
In order to facilitate the design and improve the manufacturing efficiency, the first buckle 1221 and the second buckle 1222 can be designed to be the same structure, and since the first buckle 1221 and the second buckle 1222 are used for fixing two first sidewall cards 110 respectively located at two sides of the same second card main body plane portion 121 in a clamping manner, the clamping directions of the first buckle 1221 and the second buckle 1222 are opposite, so that the clamping is conveniently spliced to the two first sidewall cards 110 at two sides of the same second card main body plane portion 121 along the opposite direction.
The first and second catches 1221, 1222 are not limited in their configuration and may include various configurations that provide a snap fit between the first and second slots 1121, 1122 with which they are engaged. For example, referring to fig. 4, a material (e.g. a metal sheet) with certain elasticity may be used as the material of the charging protection box, and a U-shaped notch 1226 is formed (e.g. punched out) on the same second fastening portion 122 corresponding to the first fastening 1221 and the second fastening 1222, so as to obtain the first fastening/the second fastening surrounded by the U-shaped notch 1126, that is, the first fastening/the second fastening may be a simple tab structure, and the first locking/the second locking cooperating with the first fastening/the second fastening may be a simple rectangular notch, the extension length of the tab structure in the length direction of the second fastening portion thereof is greater than the extension length of the rectangular notch cooperating with the first fastening/the second fastening, after the tab structure is opened away from the main body of the planar card portion and extended into the rectangular notch, then, the card is pressed down, the first buckle/the second buckle and the first clamping groove/the second clamping groove matched with the first buckle/the second buckle form clamping matching, two first side wall cards positioned at two sides of the plane part of the same second card main body move outwards, and the root part of the lug structure is clamped in the rectangular notch, so that the lug structure is limited.
Preferably, the first buckle 1221 and the second buckle 1222 are elastic strip buckles, each elastic strip buckle includes a root and a free end, and a distance between the two roots of the two elastic strip buckles on the same buckle portion is smaller than a distance between the two free ends.
The first latch 1221 and the second latch 1222 are elastic to facilitate smooth engagement, and a metal sheet may be used as the material of the charging protection box, and the metal sheet has a certain elasticity due to its material property and thickness, so that the first latch 1221 and the second latch 1222 formed by the material have elasticity. The distance between two roots of two strip elastic buckles in same joint portion is less than the distance between two free ends, make the free end can meet along opposite direction concatenation in two first lateral wall cards 110 of same second card main part plane portion 121 both sides, be convenient for the free end stretch into corresponding draw-in groove earlier after, through pressing the free end, make first buckle 1221/second buckle 1222 and rather than form the joint cooperation between the first draw-in groove 1121 of matched with/second draw-in groove 1122 (the concrete form behind the joint cooperation refers to fig. 3), at this moment, be located the outside motion of two first lateral wall cards 110 of same second card main part plane portion 121 both sides, because the root of aforementioned strip elastic buckle has been gone into to the card in the draw-in groove, thereby be restricted.
Preferably, referring to fig. 8, each of the strip-shaped elastic buckles includes, in order from the root portion to the free end, a first bent-up portion 1223, a first flat portion 1224, and a second bent-up portion 1225, and each of the first bent-up portion 1223 and the second bent-up portion 1225 is bent up in a direction away from the second card body flat portion 121.
Specifically, the bent height of the first bent-up portion 1223 should match the thickness of the first clamping portion 112 ("matching" does not mean to be necessarily equal), and ideally, the bent height is smaller than the thickness of the first clamping portion 112 of the first side wall clamping piece 110, so, with reference to fig. 3, after the root of the strip-shaped elastic buckle passes through the corresponding clamping slot on the first clamping portion 112, the second bent-up portion 1225 can be firmly clamped at the bent-up point of itself (the height of the bent-up point is equal to the bent height of the first bent-up portion 1223) in the area near the corresponding clamping slot on the first clamping portion 112, so that the same second side wall clamping piece 120 can be firmly clamped with two first side wall clamping pieces 110 located at two sides of the second side wall clamping piece 121 plane portion. The second bent-up portion 1225 at the free end of the strip-shaped elastic buckle is arranged so that the finger of a user can be conveniently matched with the second bent-up portion 1225, the strip-shaped elastic buckle is broken in a direction away from the second card main body plane portion 121, the strip-shaped elastic buckle extends into the corresponding clamping groove, and then the second bent-up portion 1225 is pressed down so that the strip-shaped elastic buckle can be firmly clamped in an area near the corresponding clamping groove on the first clamping portion 112 at the bent-up point of the second bent-up portion; after the charging protection box is used once and needs to be disassembled, the user can also easily open the elastic strip-shaped buckles along the direction away from the second card main body plane part 121 by the cooperation of the fingers and the second bent-up part 1225, so that the elastic strip-shaped buckles are separated from the corresponding card slots, and the second side wall card 120 and the first side wall card 110 are separated from each other.
Preferably, the first card slot 1121 and the second card slot 1122 have the same structure.
For convenience of design and improvement of manufacturing efficiency, the first card slot 1121 and the second card slot 1122 may be designed to have the same structure. The first and second slots 1121, 1122 are not limited in structure and may include various structures that can form a snap fit with the first and second latches 1221, 1222 engaged therewith. For example, first card slot 1121 and second card slot 1122 can be in the form of simple rectangular notches.
Preferably, with reference to fig. 7, the first slot 1121 and the second slot 1122 are both trapezoidal slots, in an assembled state of the charging protection box, a longer one of two parallel sides in the trapezoid is closer to a root of the strip-shaped elastic buckle, and a length of the longer one of the two sides is greater than a width of the strip-shaped elastic buckle.
Through the design, one of two parallel sides in the trapezoid is longer, the longer side is closer to the root of the strip-shaped elastic buckle, the side length of the side is also larger than the width of the strip-shaped elastic buckle, so that the strip-shaped elastic buckle can smoothly extend into the corresponding clamping groove, further, while the firm clamping is not affected, the processing precision requirements of the first clamping groove 1121 and the second clamping groove 1122 are reduced, so that the processing is more convenient, and it can be understood that if the clamping groove is a rectangular clamping groove with the same width as the strip-shaped elastic buckle, although the clamping groove can be matched with the strip-shaped elastic buckle in a clamping manner, in the rectangular clamping groove form, if the processing precision is slightly defective, for example, the width of the rectangular clamping groove is slightly smaller than the width of the strip-shaped elastic buckle, the root of the strip-shaped elastic buckle cannot pass through the clamping groove, normal clamping between the strip-shaped elastic buckle and the clamping groove is influenced; or although the width of each of the first engaging groove 1121 and the second engaging groove 1122 is not processed with an error, the distance between the first engaging groove 1121 and the second engaging groove 1122 is slightly too close or too wide due to the processing reason, and if the first engaging groove and the strip-shaped elastic buckle corresponding to the first engaging groove are engaged with each other, the second engaging groove and the strip-shaped elastic buckle corresponding to the second engaging groove may not be engaged with each other due to misalignment. And through the design of trapezoidal draw-in groove for longer limit is more close the root of strip elasticity buckle in two limits that are parallel to each other in the trapezoidal, and the length of a side on this limit also is greater than the width of strip elasticity buckle, even there is the error slightly in processing, no matter this error is to every draw-in groove itself, still to the interval between two draw-in grooves, can both satisfy two strip elasticity buckles in same joint portion normally stretch into rather than the needs of two draw-in grooves of mutually supporting.
Preferably, the first sidewall card 110 and the second sidewall card 120 are both sheet metal parts; two first clamping portions 112 are integrally formed at the top end and the bottom end of the first card main body plane portion 111 in a bending manner, and two second clamping portions 122 are integrally formed at the top end and the bottom end of the second card main body plane portion 121 in a bending manner; the first and second hooks 1221 and 1222 are formed by punching and bending corresponding portions of the second engaging portion 122, and the first and second engaging grooves 1121 and 1122 are formed by punching corresponding portions of the first engaging portion 112.
In this way, the first clamping portion, the second clamping portion, the first buckle and the second buckle can be simply and conveniently formed, and the first clamping groove and the second clamping groove can be formed.
Preferably, referring to fig. 2, a first sidewall clip and/or a second sidewall clip is provided with a wire hole 140 for a charging wire 210 of the lithium battery 200 to pass through.
Because the lithium battery 200 is usually placed at the bottom of the charging protection box during charging, the arrangement of the wire passing hole 140 formed in the side wall card is convenient for the charging wire 210 of the lithium battery 200 not to extend outwards after passing through the box opening of the charging protection box 100, the requirement on the length of the charging wire of the lithium battery is reduced, and the whole structural system during charging is more tidy and beautiful; furthermore, the lithium battery can enable the charging end of the charging wire to be close to the wire passing hole on the arrangement position of the lithium battery, and the adverse effect on the charging wire part in the box, which is possibly caused by the rapid rise of the ambient air temperature when the temperature of the lithium battery rapidly rises after the separation film of the lithium battery is broken, can be reduced.
Preferably, each of the first side wall clamping pieces and each of the second side wall clamping pieces are provided with a wire passing hole 140 for passing through a charging wire of the lithium battery.
Through all having the mode of setting up of crossing line hole 140 on every lateral wall card, can be so that lithium cell 200 when charging, can be close to the line hole 140 of crossing on the arbitrary lateral wall, have great randomness in the position, can also shorten the part that the charging wire of lithium cell is located the protection case that charges as far as possible.
It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.
Claims (10)
1. A detachable lithium battery charging protection assembly is characterized by comprising a fire extinguisher and a card combined lithium battery charging protection box, wherein the charging protection box is used for placing a lithium battery and the fire extinguisher in the box so as to provide fire extinguishing protection when the lithium battery is charged;
each first side wall card comprises a first card main body plane part and two first clamping parts, wherein the two first clamping parts are respectively positioned at the top end and the bottom end of the first card main body plane part, and the two first clamping parts are respectively vertical to the first card main body plane part and positioned at the same side of the first card main body plane part; each first clamping part is provided with a first clamping groove and a second clamping groove near the two end parts;
each second side wall card comprises a second card main body plane part and two second clamping parts, the two second clamping parts are respectively positioned at the top end and the bottom end of the second card main body plane part, and the two second clamping parts are respectively vertical to the second card main body plane part and positioned at the same side of the second card main body plane part; each second clamping part is provided with a first buckle and a second buckle near two ends respectively and used for clamping the first clamping groove and the second clamping groove;
in an assembly state of the charging protection box, first card main body plane portions of two first side wall cards are arranged in parallel, second card main body plane portions of two second side wall cards are arranged in parallel, each first side wall card is connected with side end portions of the two second side wall cards, the first clamping groove is matched with the first buckle, the second clamping groove is matched with the second buckle, so that the two first side wall cards and the two second side wall cards are connected in a clamping mode to form the charging protection box main body, the box bottom card is located at the bottom in the charging protection box main body, and the box bottom card is supported by a first clamping portion located at the bottom end of each first side wall card and a second clamping portion located at the bottom end of each second side wall card;
the fire extinguisher is arranged on one surface of the first side wall clamping piece, the second side wall clamping piece or the box bottom clamping piece facing the inside of the charging protection box.
2. The charging protection assembly of claim 1, wherein the first planar card body portion of the at least one first side wall card and/or the second planar card body portion of the at least one second side wall card define U-shaped slots, such that a portion of the U-shaped slots surrounds a fire extinguisher hanging tab; the fire extinguisher comprises a fire extinguisher suspension structure, and the fire extinguisher can be hung on the fire extinguisher suspension convex sheet through the fire extinguisher suspension structure.
3. The charging protection assembly of claim 1, wherein the first and second latches are of the same configuration and have opposite latching directions.
4. The charging protection assembly according to claim 3, wherein the first and second clips are elastic bar-shaped clips, each elastic bar-shaped clip comprises a root and a free end, and a distance between the two roots of the two elastic bar-shaped clips on the same clip portion is smaller than a distance between the two free ends.
5. The charging protection assembly of claim 4, wherein each strip-shaped elastic buckle comprises a first bent-up portion, a first plane portion and a second bent-up portion in sequence from the root portion to the free end, and the first bent-up portion and the second bent-up portion are bent up towards a direction away from the second card body plane portion.
6. The charging protection assembly of claim 5, wherein the first card slot and the second card slot are identical in configuration.
7. The charging protection assembly according to claim 6, wherein the first and second engaging grooves are both trapezoidal engaging grooves, and in an assembled state of the charging protection box, a longer one of two parallel sides of the trapezoid is closer to a root of the elastic strip-shaped fastener, and a length of a side of the longer one is greater than a width of the elastic strip-shaped fastener.
8. The charging protection assembly of any one of claims 1-7, wherein the first sidewall tab and the second sidewall tab are both sheet metal parts; the two first clamping parts are integrally formed at the top end and the bottom end of the first card main body plane part in a bending mode, and the two second clamping parts are integrally formed at the top end and the bottom end of the second card main body plane part in a bending mode; the first buckle and the second buckle are formed by blanking and bending corresponding parts of the second clamping portion, and the first clamping groove and the second clamping groove are formed by blanking corresponding parts of the first clamping portion.
9. The charging protection assembly as claimed in any one of claims 1 to 8, wherein a first side wall clip and/or a second side wall clip is provided with a wire through hole for a charging wire of the lithium battery to pass through.
10. The charging protection assembly of claim 1, wherein each of the first side wall cards and each of the second side wall cards are provided with a wire passing hole for a charging wire of the lithium battery to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210469724.5A CN114851863A (en) | 2022-04-28 | 2022-04-28 | Detachable lithium battery charging protection assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210469724.5A CN114851863A (en) | 2022-04-28 | 2022-04-28 | Detachable lithium battery charging protection assembly |
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| CN114851863A true CN114851863A (en) | 2022-08-05 |
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|---|---|---|---|
| CN202210469724.5A Pending CN114851863A (en) | 2022-04-28 | 2022-04-28 | Detachable lithium battery charging protection assembly |
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| CN (1) | CN114851863A (en) |
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Application publication date: 20220805 |
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