CN108091804B - Explosion-proof special type power supply unit - Google Patents
Explosion-proof special type power supply unit Download PDFInfo
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- CN108091804B CN108091804B CN201810095170.0A CN201810095170A CN108091804B CN 108091804 B CN108091804 B CN 108091804B CN 201810095170 A CN201810095170 A CN 201810095170A CN 108091804 B CN108091804 B CN 108091804B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
- H01M50/541—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges for lead-acid accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides an explosion-proof special power supply device which comprises a protective box, two explosion-proof electric control boxes, a plurality of lead-acid storage batteries, storage battery connecting wires, storage battery outgoing wires, a post sheath, a ventilation baffle plate and an acid-resistant insulating rubber plate, wherein two storage battery boxes which are symmetrically arranged left and right are arranged in the protective box, each storage battery box comprises a box body and a box cover, two baffle plates are arranged in the box body at equal intervals, the box body is divided into three battery boxes, a plurality of lead-acid storage batteries are arranged in each battery box, and the acid-resistant insulating rubber plate is arranged between the protective box and each storage battery box. The explosion-proof special power supply device provided by the invention has the advantages that the protective box and the storage battery box are divided into the inner layer and the outer layer, the outer layer protective box is used for protecting, the lead-acid storage battery is arranged in the inner layer storage battery box, and the acid-resistant insulating rubber plate is used for buffering and damping, so that the stability and reliability of the whole power supply device are ensured, and the anti-collision, anti-vibration, anti-tilting and other protective performances of the power supply device in the use process are greatly improved.
Description
Technical Field
The invention belongs to the technical field of power supply devices, and particularly relates to an explosion-proof special power supply device.
Background
The explosion-proof special type accumulator power supply device is mainly used for an electric locomotive as a power source, and is a power supply device composed of a special type lead-acid accumulator, an accumulator box, a junction box (or a plug-in device) and connecting wires, and is suitable for underground explosive gas dangerous places of coal mines, and the design requirement of the explosion-proof special type power supply device is based on MT658-2011 standard. At present, the largest 100-ton rubber-tyred shovel board carrier used underground in a coal mine runs in a tunnel under the coal mine, the vehicle body of the carrier is oversized, and in the running process, the carrier inevitably has bad running states such as collision, friction, jolt, oscillation and the like. The prior explosion-proof power supply device is mainly used for railway vehicles, does not have any anti-collision, anti-vibration and other protection functions, and has very low power because the protection and safety performance cannot be achieved.
Disclosure of Invention
The invention aims to provide an explosion-proof special power supply device, which adopts an inner layer structure, an outer layer box body is used for protection, a storage battery is arranged on the inner layer box body, and the power supply device adopts a split box type control design to divide the power supply device into a left storage battery box and a right storage battery box.
The technical scheme adopted by the invention is as follows:
an explosion-proof special power supply device comprises a protective box, two explosion-proof electric control boxes, a plurality of lead-acid batteries, a battery connecting wire, two pairs of battery outgoing wires, a pole sheath, a ventilation baffle plate and an acid-resistant insulating rubber plate; two storage battery boxes which are symmetrically arranged left and right are arranged in the protective box, each storage battery box comprises a box body and a box cover, two partition boards are arranged in the box body at equal intervals to divide the box body into three storage battery boxes, a plurality of lead-acid storage batteries are arranged in the storage battery boxes, and a plurality of liquid discharge holes are formed in the bottoms and the side faces of the storage battery boxes; the top of the storage battery box is provided with the box cover; the adjacent lead-acid storage batteries and the storage battery box are separated by insulating ventilation partition boards and are firmly plugged; the adjacent lead-acid batteries are fixedly connected by adopting a battery connecting wire; the outsides of the two pairs of outgoing lines of the storage battery are respectively connected with the two explosion-proof type electric control boxes; the connection between adjacent lead-acid storage batteries and the outgoing lines of the storage batteries are of bipolar column structures, and each polar column can independently bear loop current; the electrode post is provided with the electrode post sheath outside, and the exposed part of the storage battery connecting wire connected with the electrode post is protected by adopting an acid-resistant insulating sheath; an acid-resistant insulating rubber plate is arranged between the protective box and the storage battery box.
The invention discloses an explosion-proof special power supply device, wherein a protective box comprises two protection plates, two transverse plates and a protective box body, wherein the upper end and the lower end of the side wall of the protective box body are respectively provided with one transverse plate, the protection plates are respectively arranged at corners of two sides of one end of the top of the protective box body, explosion-proof electric control boxes are respectively and fixedly arranged on the transverse plates on two sides of the other end of the top of the protective box body, and six liquid draining holes are formed in the middle of an inner bottom plate of the protective box body.
The invention discloses an explosion-proof special power supply device, wherein two ends of the bottom of a protective box body are respectively provided with a foot pad, the foot pads are of a box structure, a reinforcing plate is arranged in the middle of the bottom of the protective box body, and the inner wall of the protective box body is lined with glass fiber reinforced plastics with the thickness of 2-5 mm.
The invention relates to an explosion-proof special power supply device, wherein a protection plate adopts a chamfer and arc structure.
The invention discloses an explosion-proof special power supply device, wherein a box cover comprises a box cover I, a box cover II, a box cover III and a box cover IV, the box cover I and the box cover II are connected through a rotation shaft in a rotating way, the box cover III and the box cover IV are connected through a rotation shaft in a rotating way, the box cover I, the box cover II, the box cover III and the box cover IV are all provided with inclined angles which are negative 5 degrees with the horizontal direction, the box cover I, the box cover II, the box cover III and the box cover IV are all connected through box cover locking devices, the box cover locking devices are of four-bar lateral double-open structures, three vent holes are respectively formed in the box cover I, the box cover II, the box cover III and the box cover IV, cover plates are arranged on the vent holes, and cofferdams with the height of 8-10mm are arranged around the vent holes; cover locks are respectively arranged on the first cover, the second cover, the third cover and the fourth cover.
The explosion-proof special power supply device provided by the invention has the advantages that the inner wall and the outer wall of the box body are treated by adopting an antistatic plastic spraying process, and the insulation resistance value in the box body is not lower than 100MΩ.
The invention relates to an explosion-proof special power supply device, wherein a lead-acid storage battery comprises a tubular positive plate, a negative plate, a storage battery groove and electrolyte, grids of the tubular positive plate and the negative plate are made of lead-base alloy, the lead-base alloy is lead-calcium alloy, and the storage battery groove and a case cover are sealed by a heat sealing process.
The invention relates to an explosion-proof special power supply device, wherein a joint of a storage battery connecting wire is connected in a cast-welding mode; and the lead-out wire of the storage battery is also connected with the pole post by adopting a cast-weld method.
The invention relates to an explosion-proof special power supply device, wherein a measuring small hole is reserved on an acid-resistant insulating sheath.
The explosion-proof special power supply device is characterized in that the protective box is formed by welding high-strength steel plates with the thickness of 20-50mm, the protective plate is formed by welding steel plates with the thickness of 50mm, and the reinforcing plate is a steel plate with the thickness of 60 mm.
The invention has the beneficial effects that:
the explosion-proof special power supply device provided by the invention has the advantages that the protective box and the storage battery box are divided into the inner layer and the outer layer, the outer layer protective box is used for protecting, the lead-acid storage battery is arranged in the inner layer storage battery box, and the acid-resistant insulating rubber plate is used for buffering and damping, so that the stability and reliability of the whole power supply device are ensured, and the anti-collision, anti-vibration, anti-tilting and other protective performances of the power supply device in the use process are greatly improved. The design of the special lead-acid storage battery for the D1200KT coal mine matched with the power supply device is based on MT658-2010 standard.
According to the explosion-proof special power supply device, a lead-acid storage battery is made into a bipolar column structure, and each pole column can bear loop current independently; the battery groove and the case cover are sealed by a heat sealing process, so that reliable sealing between the case covers and between the polar post and the lead-acid battery is ensured; the use of the tubular positive plate improves the service performance and service life of the storage battery; the grids of the positive plate and the negative plate are respectively made of lead-base alloy, so that the grid alloy of the negative plate is readjusted, the loss of water in the charging process is reduced, and the safety performance of the storage battery is improved; through the improvement, the use of the underground 100-ton shovel type carrier in the coal mine can be met, and meanwhile, the maintenance times in use are reduced.
Drawings
FIG. 1 is a schematic top view of an explosion-proof special power supply device according to the present invention;
FIG. 2 is a view in the direction A of FIG. 1;
FIG. 3 is a view in the direction B of FIG. 1;
fig. 4 is a schematic top view of the special explosion-proof power supply device with the cover removed.
The invention will be further described with reference to specific examples and figures.
Detailed Description
As shown in fig. 1, 2, 3 and 4, an explosion-proof special power supply device comprises a protective box 1, two explosion-proof electric control boxes 3, a plurality of lead-acid batteries 4, a battery connecting wire 5, two pairs of battery outgoing wires 6, a pole sheath 7, a ventilation baffle 8 and an acid-proof insulating rubber plate 9, wherein the protective box 1 is a cuboid box body with an opening at the upper end, and the battery connecting wire 5 adopts 70mm 2 The mining cable can improve the service performance of the lead-acid storage battery 4 and prolong the service life of the lead-acid storage battery 4;
the protective housing 1 includes two guard plates 11, two transverse plates 12, the protective housing 13, two pad feet 14 and reinforcing plate 15, the upper end and the lower extreme of protective housing 13 lateral wall are equipped with a transverse plate 12 respectively and do the protection, the corner punishment of protective housing 13 top one end both sides do not is equipped with guard plate 11, guard plate 11 adopts the chamfer to add the arc shape structure, prevent collision and friction, be equipped with explosion-proof electrical control case 3 on the transverse plate 12 of protective housing 13 top other end both sides respectively fixedly, the bottom both ends of protective housing 13 are equipped with pad feet 14 respectively, pad feet 14 are box structure, adopt a plurality of triangle-shaped fixed plates one 16 to be located the transverse plate 12 and the pad foot 14 reinforcing connection of protective housing 13 lower extreme, adopt two triangle-shaped fixed plates two 17 to be located the transverse plate 12 and the protective housing 13 reinforcing connection of protective housing 13 lower extreme, the bottom centre of housing 13 is equipped with reinforcing plate 15, the Q550 high strength steel plate welding that adopts 20-50mm thick forms, the Q550 steel plate welding that adopts 50mm thick is formed, reinforcing plate 15 is 60mm thick steel plate, the reinforcing plate is 60 thick steel plate is big, the improvement of the inner wall of protective housing 1 has been equipped with the overall protection housing 13, the liquid resistance is shown in the guard plate's the inner wall of the protective housing, six-proof housing's the whole resistance is avoided building the liquid resistance to be equipped with the protective housing's the inner wall, the protection device is protected in the inner wall of the protective housing's the resistance to prevent the liquid from accumulating.
The protection box 1 is internally provided with two storage battery boxes 2 which are arranged in a bilateral symmetry manner, the two storage battery boxes 2 are separated by adopting I-steel, the two storage battery boxes 2 are respectively controlled by using an explosion-proof electric control box 3, the voltage of each storage battery box 2 is 240V, the storage battery box 2 comprises a box body 21 and a box cover 22, two partition boards 211 are arranged in the box body 21 at equal intervals, the box body 21 is divided into three storage battery boxes 212, a plurality of lead-acid storage batteries 4 are arranged in the storage battery boxes 212, the inside of the box body 21 adopts a three-section structure so as to reduce the voltage difference between the adjacent lead-acid storage batteries, the creepage between the adjacent lead-acid storage batteries 4 is prevented, the partition boards 211 are made of Q345 steel plates and are processed by using insulating plastic spraying, and the bottom and the side surfaces of the storage battery boxes 212 are provided with a plurality of drain holes so as to prevent the flushing water and cooling water of the lead-acid storage batteries from accumulating at the bottom, thereby causing electric leakage; in order to improve the acid-resistant insulating performance of the box body 21, the inner wall and the outer wall of the box body 21 are treated by adopting an antistatic plastic spraying process, and the insulating resistance value in the box body 21 is not lower than 100MΩ and is far higher than that specified by the similar standard by not lower than 5MΩ;
the top of the storage battery box 2 is provided with a box cover 22, the box cover 22 comprises a first box cover 221, a second box cover 222, a third box cover 223 and a fourth box cover 224, the first box cover 221 and the second box cover 222 are connected in a rotating way through a first rotating shaft 23, the third box cover 223 and the fourth box cover 224 are connected in a rotating way through a second rotating shaft 24, in order to avoid hydrogen accumulation in the storage battery box 2, the first box cover 221, the second box cover 222, the third box cover 223 and the fourth box cover 224 are all provided with inclined angles which are negative 5 degrees with the horizontal direction, three vent holes are respectively formed in the first box cover 221, the second box cover 222, the third box cover 223 and the fourth box cover 224, and in order to prevent water from entering the storage battery box 2, cover plates 25 are arranged on the vent holes, and cofferdams which are 10mm high are arranged around the vent holes; in order to prevent the power supply device from being randomly opened in the using process, the first cover 221, the second cover 222, the third cover 223 and the fourth cover 224 are respectively provided with cover locks, the first cover 221, the second cover 222, the third cover 223 and the fourth cover 224 are connected by adopting cover lock devices, and the cover lock devices are of four-bar lateral double-open structures, are flexible in rotation and portable in opening and closing, and occupy small space in the opening and closing process.
The lead-acid storage battery 4 comprises a tubular positive plate, a negative plate, a storage battery groove and electrolyte, wherein grid plates of the tubular positive plate and the negative plate are made of lead-base alloy, the lead-base alloy is lead-calcium alloy, the storage battery groove and the case cover 22 are sealed by a heat sealing process, namely, the joint of the storage battery groove and the case cover 22 is heated and melted respectively firstly, then the two are pressed together, and the adjacent lead-acid storage batteries 4 and the lead-acid storage battery 4 and the storage battery case 2 are separated by adopting special insulating ventilation partition plates 8 and are firmly plugged, so that ventilation and liquid discharge inside the storage battery case 2 are facilitated; the adjacent lead-acid storage batteries 4 are fixedly connected by adopting a storage battery connecting wire 5, the storage battery connecting wire 5 is formed by casting lead alloy and a cable, so that once the lead-acid storage batteries 4 have small displacement, no influence is caused on the connecting point, the joints of the storage battery connecting wire 5 are connected in a cast welding mode, and the cast joint is firm and reliable; the two storage battery boxes 2 are respectively provided with a pair of storage battery outgoing lines 6, and the outer sides of the two pairs of storage battery outgoing lines 6 are respectively connected with the two explosion-proof type electric control boxes 3; the connection between adjacent lead-acid storage batteries 4 and the storage battery outgoing lines 6 are of a bipolar column structure, each polar column can bear loop current independently, ignition caused by poor contact of a storage battery connecting line 5 is avoided in the use process, a polar column jacket 7 is arranged outside each polar column, and the storage battery outgoing lines 6 are connected with the polar columns by adopting a cast-weld method; the exposed part of the storage battery connecting wire 5 connected with the pole is protected by an acid-resistant insulating sheath, and a measuring small hole is reserved on the acid-resistant insulating sheath so as to prevent conductive impurities from entering a storage battery box to cause short circuit of the storage battery, thus greatly improving the overall safety performance of the product; the acid-resistant insulating rubber plate 9 is arranged between the protective box 1 and the storage battery box 2 for buffering and damping, so that the overall stability and reliability of the power supply device are ensured, and the anti-collision, anti-vibration, anti-jolt and other protective performances of the power supply device in the use process are greatly improved.
The explosion-proof type electric control box 3 is KXB-600/240 (C), the number of single batteries of the lead-acid storage battery 4 is 240, and the rated capacity of the power supply device is as follows: 1200Ah (5 hour rate), rated voltage: 480V, during the use, the one end that protective housing 1 was equipped with guard plate 11 is placed at mining locomotive portion, and the voltage of two battery boxes is put into the vehicle host computer and is established ties again.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. An explosion-proof special power supply device, characterized in that: the anti-explosion type lead-acid storage battery comprises a protective box (1), two anti-explosion type electric control boxes (3), a plurality of lead-acid storage batteries (4), a storage battery connecting wire (5), two pairs of storage battery outgoing wires (6), a pole sheath (7), a ventilation baffle plate (8) and an acid-resistant insulating rubber plate (9); two storage battery boxes (2) which are symmetrically arranged left and right are arranged in the protective box (1), the storage battery boxes (2) comprise a box body (21) and a box cover (22), two partition plates (211) are arranged in the box body (21) at equal intervals, the box body (21) is divided into three battery boxes (212), a plurality of lead-acid storage batteries (4) are arranged in the battery boxes (212), and a plurality of liquid discharge holes are formed in the bottom and the side surfaces of the battery boxes (212); the top of the storage battery box (2) is provided with the box cover (22); the adjacent lead-acid storage batteries (4) and the storage battery box (2) are separated by insulating ventilation partition boards (8) and are firmly plugged; the adjacent lead-acid storage batteries (4) are fixedly connected by adopting a storage battery connecting wire (5); the outsides of the two pairs of battery outgoing lines (6) are respectively connected with the two explosion-proof electrical control boxes (3); the connection between adjacent lead-acid storage batteries (4) and the lead-out wires (6) of the storage batteries adopt a bipolar column structure, and each polar column can independently bear loop current; the electrode post is provided with the electrode post sheath (7), and the exposed part of the storage battery connecting wire (5) connected with the electrode post is protected by adopting an acid-resistant insulating sheath; an acid-resistant insulating rubber plate (9) is arranged between the protective box (1) and the storage battery box (2).
2. The explosion-proof special power supply device according to claim 1, wherein: the protection box (1) comprises two protection plates (11), two transverse plates (12) and a protection box body (13), wherein the upper end and the lower end of the side wall of the protection box body (13) are respectively provided with one transverse plate (12), the corners of two sides of one end of the top of the protection box body (13) are respectively provided with the protection plates (11), two sides of the other end of the top of the protection box body (13) are respectively fixedly provided with an explosion-proof electric control box (3) on the transverse plates (12), and six liquid draining holes are formed in the middle of the inner bottom plate of the protection box body (13).
3. The explosion-proof special power supply device according to claim 1, wherein: the two ends of the bottom of the protection box body (13) are respectively provided with a foot pad (14), the foot pad (14) is of a box type structure, a reinforcing plate (15) is arranged in the middle of the bottom of the protection box body (13), and the inner wall of the protection box body (13) is lined with glass fiber reinforced plastics with the thickness of 2-5 mm.
4. The explosion-proof special power supply device according to claim 2, wherein: the protection plate (11) adopts a chamfer and arc structure.
5. The explosion-proof special power supply device according to claim 1, wherein: the box cover (22) comprises a first box cover (221), a second box cover (222), a third box cover (223) and a fourth box cover (224), wherein the first box cover (221) and the second box cover (222) are rotationally connected through a first rotating shaft (23), the third box cover (223) and the fourth box cover (224) are rotationally connected through a second rotating shaft (24), the first box cover (221), the second box cover (222), the third box cover (223) and the fourth box cover (224) are respectively provided with an inclined angle which is negative 5 degrees with the horizontal direction, the first box cover (221), the second box cover (222), the third box cover (223) and the fourth box cover (224) are respectively connected by adopting a box cover locking device, the box cover locking device is of a four-bar side double-opening structure, three vent holes are respectively formed in the first box cover (221), the third box cover (223) and the fourth box cover (224), cover plates (25) are respectively arranged on the vent holes, and cofferdams with heights of 8-10mm are arranged around the vent holes; cover locks are respectively arranged on the first cover (221), the second cover (222), the third cover (223) and the fourth cover (224).
6. The explosion-proof special power supply device according to claim 1, wherein: the inner wall and the outer wall of the box body (21) are treated by adopting an antistatic plastic spraying process, and the insulation resistance value in the box body (21) is not lower than 100MΩ.
7. The explosion-proof special power supply device according to claim 1, wherein: the lead-acid storage battery (4) comprises a tubular positive plate, a negative plate, a storage battery groove and electrolyte, grids of the tubular positive plate and the negative plate are made of lead-base alloy, the lead-base alloy is lead-calcium alloy, and the storage battery groove and the case cover (22) are sealed by a heat sealing process.
8. The explosion-proof special power supply device according to claim 1, wherein: the joints of the storage battery connecting wires (5) are connected in a cast-weld mode; the battery outgoing line (6) is also connected with the pole post by adopting a cast-weld method.
9. The explosion-proof special power supply device according to claim 1, wherein: and a small measuring hole is reserved on the acid-resistant insulating sheath.
10. The explosion-proof special power supply apparatus according to any one of claims 2 to 9, wherein: the protective box (1) is formed by welding high-strength steel plates with the thickness of 20-50mm, the protective plate (11) is formed by welding steel plates with the thickness of 50mm, and the reinforcing plate (15) is a steel plate with the thickness of 60 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810095170.0A CN108091804B (en) | 2018-01-31 | 2018-01-31 | Explosion-proof special type power supply unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810095170.0A CN108091804B (en) | 2018-01-31 | 2018-01-31 | Explosion-proof special type power supply unit |
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| CN108091804A CN108091804A (en) | 2018-05-29 |
| CN108091804B true CN108091804B (en) | 2023-07-28 |
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| CN111416084A (en) * | 2020-04-26 | 2020-07-14 | 东风海博新能源科技有限公司 | Cool pipeline of winding type liquid and no modular structure battery package |
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