CN117254220B - Overheat fusing type safe lithium battery pack - Google Patents
Overheat fusing type safe lithium battery pack Download PDFInfo
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- CN117254220B CN117254220B CN202311522789.2A CN202311522789A CN117254220B CN 117254220 B CN117254220 B CN 117254220B CN 202311522789 A CN202311522789 A CN 202311522789A CN 117254220 B CN117254220 B CN 117254220B
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- Prior art keywords
- fusing
- alarm
- heat conduction
- fixedly arranged
- heat
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 76
- 238000007789 sealing Methods 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000741 silica gel Substances 0.000 claims abstract description 14
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 14
- 238000010030 laminating Methods 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 25
- 229910052802 copper Inorganic materials 0.000 claims description 25
- 239000010949 copper Substances 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 claims description 18
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 238000012546 transfer Methods 0.000 abstract description 9
- 238000002791 soaking Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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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
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
- H01H85/32—Indicating lamp structurally associated with the protective device
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
-
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- 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
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an overheat fusing type safe lithium battery pack, which relates to the technical field of safe lithium battery packs and comprises a fusing alarm device, an electric conduction connecting device, an overheat fusing device, a heat conduction fastening device and a power lithium battery. The overheat fusing device realizes overheat protection function through fusing of the fusing fuse assembly, and realizes the change function of current and temperature threshold value by changing thickness of the detachable resistance wire on the fusing fuse assembly. The heat conduction fastening device drives the laminating clamping assembly to stretch out and draw back and tightly laminate with the power lithium battery through the movement of the heat conduction supporting assembly, so that the clamping function of the lithium battery is realized, and the heat transfer function is realized through the heat conduction of the heat conduction supporting assembly. The fusing alarm device uniformly distributes heat on each fusing connector through the heat-conducting sealing silica gel pad to realize a soaking function, and the fusing of the fusing connectors and the pulling-down force of the alarm assembly are performed so that the alarm signal lamp is lightened to realize an alarm function.
Description
Technical Field
The invention relates to the technical field of safe lithium battery packs, in particular to an overheat fusing type safe lithium battery pack.
Background
With the rapid development of lithium battery technology on new energy automobiles, the endurance of the lithium battery is greatly improved, and the lithium battery can be even comparable to a fuel oil vehicle. However, there are also problems with the lithium battery pack of the new energy vehicle, such as: overheating of lithium batteries results in reduced life, failure of the lithium batteries to cause explosive combustion, etc. However, these problems are always a mountain in front of the new energy automobile for the traditional lithium battery pack of the new energy automobile, which also greatly restricts the future development path of the new energy automobile, and is a great potential safety hazard of the traditional lithium battery pack. Therefore, there is a need for an overheat fusing type safety lithium battery pack capable of automatically fusing and automatically alarming to power off after overheat of the lithium battery, so as to solve the problem that the conventional lithium battery pack cannot cope with.
The patent of publication number CN207765529U provides a lithium battery module with fuse subassembly, and the device includes lithium battery module and fuse subassembly, the fuse subassembly improves and installs outside the lithium battery module, realizes the convenient dismouting function of fuse, the fuse is sealed to be installed in the fuse safety box on the fuse subassembly, still seals through the sealing washer simultaneously, realizes sealing function. The fuse protector is convenient and simple to maintain and replace. But this scheme does not have corresponding fusing alarm device, after the fusing, can't remind the driver in the first time, and lithium cell overheat triggers the fusing, probably leads to maintenance or the driver can't know the fault cause in the first time. Meanwhile, although the fuse can be disassembled, the specification of the fuse cannot be changed, and the temperature threshold of the fuse cannot be changed, so that the new energy automobile cannot adapt to different use environments. The scheme also has no corresponding heat conduction soaking device, so that the heat of the lithium battery is accumulated under normal conditions, and under the condition of no fault, the fuse is triggered by mistake, thereby causing unnecessary loss.
Disclosure of Invention
The invention aims to provide an overheat fusing type safe lithium battery pack, which aims to solve the technical problems in the prior art such as how to realize automatic overheat fusing of the lithium battery pack, how to realize an automatic alarm function after fusing, how to realize heat averaging of a lithium battery and the like.
Aiming at the technical problems, the invention adopts the following technical scheme: an overheat fusing type safe lithium battery pack comprises a fusing alarm device, an electric conduction connecting device, an overheat fusing device, a heat conduction fastening device and a power lithium battery; the fusing alarm device is fixedly provided with an electric conduction connecting device, a heat conduction fastening device and a power lithium battery, wherein the fusing alarm device uniformly distributes heat on each fusing connector through a heat conduction sealing silica gel pad to keep the temperature of the fusing connectors consistent, and the fusing of the fusing connectors and the pulling force of an alarm assembly are used for enabling an alarm signal lamp to be lightened so as to alarm after overheat fusing; the electric power lithium battery is characterized in that an overheat fusing device is fixedly arranged on the electric connection device, the electric connection device is connected with the anode and the cathode of the power lithium battery through an anode electric conduction binding post and a cathode electric conduction binding post and used for outputting electric energy, the overheat fusing device is used for overheat fusing protection through fusing of a fusing insurance component, and the size of a detachable resistance wire on the fusing insurance component is replaced through replacement to be used for changing of current and temperature threshold values.
Further, the fusing alarm device comprises an insulating protective shell, a heat-conducting sealing silica gel pad, a fusing connector, an alarm assembly, a mounting threaded hole and a mounting groove; the heat conduction sealing silica gel pad is fixedly arranged on the insulating protective shell; the fusing connector is fixedly arranged on the insulating protective shell, and meanwhile, the fusing connector is also fixedly arranged on the alarm assembly; the alarm component is fixedly arranged on the insulating protective shell; the insulating protective shell is provided with a mounting threaded hole and a mounting groove, the mounting threaded hole is used for fixing and positioning, and the mounting groove is used for fixed mounting.
Further, the fusing connector comprises a first magnetic attraction connecting shell, a second magnetic attraction connecting shell, a first fusing connecting column, a second fusing connecting column and a fusing protection wire; the first magnetic connection shell is fixedly arranged on the second magnetic connection shell; the first fusing connecting column is fixedly arranged on the second magnetic connecting shell; the second fusing connecting column is fixedly arranged on the first magnetic attraction connecting shell; the two ends of the fusing protection wire are respectively and fixedly arranged on the first fusing connecting column and the second fusing connecting column.
Further, the alarm assembly comprises an alarm lamp holder, an alarm supporting plate, an alarm capacitor, an alarm conductive plug, an alarm spring and an alarm signal lamp; the two ends of the alarm spring are respectively fixedly arranged on the alarm lamp holder and the alarm supporting plate; the alarm capacitor is fixedly arranged on the alarm supporting plate; the alarm conductive plug is fixedly arranged on the alarm supporting plate, and is fixedly connected with the alarm capacitor through a lead; the alarm signal lamp is fixedly arranged on the alarm lamp holder.
Further, the heat conduction fastening device comprises a heat conduction shell, a lamination clamping assembly, a heat conduction connecting pad, a fastening spring, a heat conduction tightening assembly and a heat conduction sliding rail; the laminating clamping assembly is slidably arranged on the heat conducting shell; the heat conduction connecting pad is fixedly arranged on the heat conduction shell; the two ends of the fastening spring are respectively fixedly arranged on the heat conduction shell and the attaching and clamping assembly; the heat conduction supporting component is slidably arranged on the heat conduction shell; the heat-conducting shell is provided with a heat-conducting slide rail.
Further, the attaching and clamping assembly comprises a sliding connecting column, a heat conducting copper block, a fastening heat conducting plate and a heat conducting patch; the sliding connecting column is fixedly arranged on the fastening heat-conducting plate; the heat conducting copper block is fixedly arranged on the fastening heat conducting plate and is fixedly connected with the heat conducting patch; the heat conduction patch is fixedly arranged on the fastening heat conduction plate.
Further, the heat conduction tightening assembly comprises a counterweight heat insulation cover, a fastening heat conduction cutting and a sliding mounting groove; the fastening heat conduction cutting is fixedly arranged on the counterweight heat insulation cover, and a sliding mounting groove is also formed in the fastening heat conduction cutting.
Further, the overheat fusing device comprises a series conductive box, an insulating cover plate, a fusing insurance component and a threaded binding post; the insulating cover plate is fixedly arranged on the series conductive box; the fusing insurance component is fixedly arranged on the threaded binding post, and meanwhile, an internal thread on the fusing insurance component and an external thread on the threaded binding post form a thread pair; the screw binding post is fixedly arranged on the series connection conductive box.
Further, the fusing insurance component comprises a conductive copper seat, a power-on plug, a detachable resistance wire and a sealing insulation ring; the power-on plug is fixedly arranged on the conductive copper seat; the detachable resistance wire is fixedly arranged on the conductive copper seat, and simultaneously, the detachable resistance wire is in contact with the power-on plug for conduction; the sealing insulating ring is fixedly arranged on the conductive copper seat and used for fixedly sealing the detachable resistance wire.
Further, the conductive connecting device comprises an insulating connecting plate, an anode conductive binding post, a cathode conductive binding post, a mounting through hole and a serial connector; the positive electrode conductive binding post and the negative electrode conductive binding post are fixedly arranged on the insulating connecting plate; the insulating connecting plate is provided with a mounting through hole which is used for fixing and positioning; the series connector is fixedly arranged on the insulating connecting plate and is used for connecting two adjacent rows of power lithium batteries in series.
Compared with the prior art, the invention has the beneficial effects that: (1) The overheat fusing device realizes overheat protection function through fusing of the fusing fuse assembly, and realizes the change function of current and temperature threshold value by changing thickness of the detachable resistance wire on the fusing fuse assembly. (2) The heat conduction fastening device drives the laminating clamping assembly to stretch out and draw back and tightly laminate with the power lithium battery through the movement of the heat conduction supporting assembly, so that the clamping function of the lithium battery is realized, and the heat transfer function is realized through the heat conduction of the heat conduction supporting assembly. (3) The fusing alarm device uniformly distributes heat on each fusing connector through the heat-conducting sealing silica gel pad to realize a soaking function, and the fusing of the fusing connectors and the pulling-down force of the alarm assembly are performed so that the alarm signal lamp is lightened to realize an alarm function.
Drawings
Fig. 1 is a schematic diagram of a general assembly structure of an operating state according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a final assembly structure of an operating state according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of a fuse alarm device according to the present invention.
Fig. 4 is a schematic structural view of a fuse connector according to the present invention.
Fig. 5 is a schematic diagram of a second embodiment of a fuse connector according to the present invention.
FIG. 6 is a schematic diagram of the structure of the alarm assembly of the present invention.
Fig. 7 is a schematic structural diagram of the conductive connection device of the present invention.
Fig. 8 is a schematic structural view of the overheat fusing device of the present invention.
Fig. 9 is a schematic structural diagram of a thermal fuse apparatus according to the present invention.
FIG. 10 is a schematic view of a fuse assembly according to the present invention.
Fig. 11 is a schematic structural view of a heat-conducting fastening device according to the present invention.
Fig. 12 is a schematic structural diagram of a heat-conducting fastening device according to the present invention.
FIG. 13 is a schematic view of a conformable clamp assembly according to the present invention.
Fig. 14 is a schematic structural view of the heat conductive tightening assembly of the present invention.
In the figure: 1-fusing an alarm device; 2-conductive connection means; 3-overheat fusing device; 4-a thermally conductive fastening means; 5-power lithium battery; 101-an insulating protective housing; 102-a heat conduction sealing silica gel pad; 103-fusing the connector; 104-an alarm assembly; 105-mounting a threaded hole; 106-mounting grooves; 10301-a first magnetic connection housing; 10302-a second magnetic connection housing; 10303-a first fused connection post; 10304-a second fusing bond post; 10305-fusing the protective wire; 10401-alarm lamp holder; 10402-an alarm support plate; 10403-an alarm capacitance; 10404-alarm conductive plug; 10405-an alarm spring; 10406-alarm signal lamp; 201-insulating connection plates; 202-an anode conductive binding post; 203-a negative electrode conductive binding post; 204-mounting through holes; 205-a serial connector; 301-series connection of conductive boxes; 302-insulating cover plate; 303-fusing a fuse assembly; 304-a threaded post; 30301-conductive copper mount; 30302-plug for electrical connection; 30303-removable resistance wire; 30304-sealing insulation ring; 401-a thermally conductive housing; 402-fitting the clamping assembly; 403-thermally conductive connection pads; 404-fastening a spring; 405-a thermally conductive tightening assembly; 406-a heat-conducting slide rail; 40201-a sliding connection post; 40202-thermally conductive copper block; 40203-fastening a heat-conducting plate; 40204-a thermally conductive patch; 40501-counterweight insulation cover; 40502-fastening a heat conductive insert; 40503-sliding mounting groove.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Fig. 1 to 14 are preferred embodiments of the present invention.
As shown in fig. 1 and fig. 2, an electrical connection device 2, a thermal conduction fastening device 4 and a power lithium battery 5 are fixedly installed on the fusing alarm device 1, the fusing alarm device 1 uniformly distributes heat on each fusing connector 103 through a thermal conduction sealing silica gel pad 102 to keep the temperature of the fusing connector 103 consistent, and then the fusing of the fusing connector 103 and the pulling down force of an alarm assembly 104 lead an alarm signal lamp 10406 to be lightened so as to be used for alarming after overheat fusing, and the thermal conduction fastening device 4 drives the laminating clamping assembly 402 to stretch and tightly laminate with the power lithium battery 5 through the movement of the thermal conduction tightening assembly 405 so as to be used for clamping the lithium battery, and then the thermal conduction of the thermal conduction tightening assembly 405 is used for transferring heat; the overheat fusing device 3 is fixedly arranged on the conductive connecting device 2, the conductive connecting device 2 is connected with the anode and the cathode of the power lithium battery 5 through the positive conductive binding post 202 and the negative conductive binding post 203 for outputting electric energy, the overheat fusing device 3 is used for overheat fusing protection through fusing the fusing fuse assembly 303, and the size of the detachable resistance wire 30303 on the fusing fuse assembly 303 is changed for changing the current and the temperature threshold value.
As shown in fig. 3, in the fusing alarm device 1, a thermally conductive sealing silica gel pad 102 is fixedly installed on an insulating protective case 101; the fuse connector 103 is fixedly arranged on the insulating protective shell 101, and meanwhile, the fuse connector 103 is also fixedly arranged on the alarm assembly 104; the alarm assembly 104 is fixedly arranged on the insulating protective shell 101; the insulating protective housing 101 is provided with a mounting screw hole 105 and a mounting groove 106, the mounting screw hole 105 is used for fixing and positioning, and the mounting groove 106 is used for fixing and mounting.
As shown in fig. 4 and 5, in the fuse connector 103, a first magnetic connection housing 10301 is fixedly mounted on a second magnetic connection housing 10302; the first fusing bond post 10303 is fixedly mounted on the second magnetic bond housing 10302; the second fusing connecting column 10304 is fixedly arranged on the first magnetic connection shell 10301; the two ends of the fuse protection wire 10305 are respectively and fixedly installed on the first fuse connection post 10303 and the second fuse connection post 10304.
As shown in fig. 6, in the alarm assembly 104, both ends of an alarm spring 10405 are fixedly installed on an alarm lamp holder 10401 and an alarm supporting plate 10402, respectively; the alarm capacitor 10403 is fixedly arranged on the alarm supporting plate 10402; the alarm conductive plug 10404 is fixedly arranged on the alarm supporting plate 10402, and meanwhile, the alarm conductive plug 10404 is fixedly connected with the alarm capacitor 10403 through a wire; the warning signal lamp 10406 is fixedly installed on the warning lamp socket 10401.
As shown in fig. 7, in the conductive connecting device 2, a positive conductive post 202 and a negative conductive post 203 are fixedly mounted on an insulating connecting plate 201; the insulating connecting plate 201 is provided with a mounting through hole 204, and the mounting through hole 204 is used for fixing and positioning; the series connector 205 is fixedly mounted on the insulating connecting plate 201 for series connection of two adjacent rows of power lithium batteries 5.
As shown in fig. 8 and 9, in the thermal fuse device 3, an insulating cover plate 302 is fixedly mounted on a series conductive cartridge 301; the fusing insurance component 303 is fixedly arranged on the threaded binding post 304, and meanwhile, the internal thread on the fusing insurance component 303 and the external thread on the threaded binding post 304 form a thread pair; the threaded post 304 is fixedly mounted to the series conductive box 301.
As shown in fig. 10, in the fuse protector 303, the power plug 30302 is fixedly mounted on the conductive copper base 30301; the detachable resistance wire 30303 is fixedly arranged on the conductive copper seat 30301, and meanwhile, the detachable resistance wire 30303 is in contact conduction with the power-on plug 30302; the sealing insulating ring 30304 is fixedly arranged on the conductive copper seat 30301 and is used for fixedly sealing the detachable resistance wire 30303.
As shown in fig. 11 and 12, in the thermally conductive fastening device 4, the conformable clamping assembly 402 is slidably mounted on the thermally conductive housing 401; the heat conducting connection pad 403 is fixedly installed on the heat conducting shell 401; two ends of the fastening spring 404 are respectively fixedly arranged on the heat conduction shell 401 and the attaching and clamping assembly 402; the thermally conductive cinching assembly 405 is slidably mounted to the thermally conductive housing 401; a thermally conductive slide 406 is provided on the thermally conductive housing 401.
As shown in fig. 13, in conformable clamp assembly 402, a sliding connection post 40201 is fixedly mounted on a fastening heat conductive plate 40203; the heat conducting copper block 40202 is fixedly arranged on the fastening heat conducting plate 40203, and meanwhile, the heat conducting copper block 40202 is fixedly connected with the heat conducting patch 40204; the heat conductive patch 40204 is fixedly mounted on the fastening heat conductive plate 40203.
As shown in fig. 14, in the heat conductive tightening assembly 405, the fastening heat conductive insert 40502 is fixedly mounted on the weight heat insulating cover 40501, and the fastening heat conductive insert 40502 is further provided with a sliding mounting groove 40503.
The working principle of the invention is as follows: fig. 1 and 2 show the use mode and the corresponding scene of the invention, the overheat fusing of the overheat fusing type safety lithium battery pack and the gesture control of the alarming process are determined by the fusing alarming device 1, the overheat fusing device 3 and the heat conducting fastening device 4, the gesture of the alarming process is determined by the fusing alarming device 1, the gesture of the overheat fusing process is determined by the fusing alarming device 1, the overheat fusing device 3 and the heat conducting fastening device 4, the gesture of the overheat fusing device 3 and the heat conducting fastening device 4 is determined by the fusing alarming device 1, and the fusing alarming device 1 is the core of the overheat fusing type safety lithium battery pack.
Taking the first embodiment as an example, when the power lithium battery 5 is overheated but has no fault, the heat conduction fastening device 4 and the heat conduction sealing silica gel pad 102 on the fusing alarm device 1 will average the heat to the four fusing connectors 103 around the power lithium battery 5, when two or more fusing connectors 103 overheat and fuse, the alarm component 104 will drop down to be electrified because the tension of the alarm spring 10405 is greater than the tension of the fusing connectors 103, so as to realize the alarm function of the alarm signal lamp 10406, thereby reminding the driver that the power lithium battery 5 overheat needs cooling and temperature reduction, but not overheat caused by faults such as battery short circuit; when the power lithium battery 5 is short-circuited or has overlarge current, the overheat fusing device 3 used for being connected in series on the conductive connecting device 2 can quickly rise in temperature due to the overlarge current, and when the temperature reaches the temperature threshold value of the fuse fusing component 303 on the overheat fusing device 3, the fuse fusing component 303 can automatically fuse to realize the fault overheat fusing function; when the highest temperature threshold of the power lithium battery 5 is changed under different environments, the detachable resistance wire 30303 on the fusing insurance component 303 and the fusing protection wire 10305 in the fusing connector 103 need to be replaced by a model which can be fused at the corresponding temperature, so that the change of the temperature threshold of the power lithium battery 5 is realized.
Specifically, as shown in fig. 3, 4, 5 and 6, when the power lithium battery 5 is overheated due to non-failure, the heat-conducting sealing silica gel pad 102 on the insulating protective housing 101 uniformly transfers heat to the heat-conducting fastening device 4 and the fusing connector 103 to realize a soaking function; the first fusing connection column 10303 and the second fusing connection column 10304 on the fusing connector 103 can transfer heat to the fusing protection wire 10305, when the temperature is too high and the fusing protection wire 10305 fuses, the first magnetic connection shell 10301 and the second magnetic connection shell 10302 which are originally magnetically attracted together can be separated by the tension of the alarm spring 10405 on the alarm assembly 104, the alarm spring 10405 drives the alarm support plate 10402 to descend, the alarm support plate 10402 drives the alarm capacitor 10403 and the alarm conductive plug 10404 to descend, and when the alarm conductive plug 10404 is inserted into the alarm lamp holder 10401 in a descending manner, the alarm capacitor 10403 can supply power to the alarm signal lamp 10406, so that the alarm signal lamp 10406 is lightened to realize a fusing alarm function; when the temperature threshold of the battery pack needs to be changed, the fuse protection wire 10305 is only needed to be replaced; when the lithium battery pack is assembled, the installation threaded hole 105 on the insulating protective shell 101 is used for positioning and fixing the conductive connecting device 2; the mounting recess 106 on the insulating protective housing 101 is used for positioning the heat-conducting fastening means 4.
As shown in fig. 7, 8, 9 and 10, the mounting through hole 204 on the insulating connecting plate 201 is used for positioning when the conductive connecting device 2 and the fusing alarm device 1 are fixedly mounted; the positive electrode conductive binding post 202 and the negative electrode conductive binding post 203 are respectively connected with the positive electrode and the negative electrode of the power lithium battery 5 to realize a conductive function; the serial connector 205 is used for serial connection between two adjacent rows of power lithium batteries 5; the two ends of the series connection conductive box 301 on the heat conduction fastening device 4 are respectively connected with the positive electrode conductive binding post 202 of the previous power lithium battery 5 and the negative electrode conductive binding post 203 of the next power lithium battery 5 to realize the series connection function of the power lithium batteries 5; the insulating cover plate 302 is used for protecting the fusing insurance component 303; the threaded terminal 304 is used for dismounting and mounting the fusing insurance component 303; when the power lithium battery 5 is overheated due to overlarge current or short-circuit fault, the temperature of the detachable resistance wire 30303 on the fusing safety component 303 is rapidly increased due to overlarge current, so that the detachable resistance wire 30303 is overheated and fused to realize the fault overheat fusing function; when the maximum current threshold and the temperature threshold of the lithium battery need to be changed or the fused fusing insurance component 303 needs to be replaced, the conductive copper seat 30301 needs to be unscrewed from the threaded binding post 304, so that the power-on plug 30302 is pulled out of the threaded binding post 304, the sealing insulating ring 30304 is detached, and a new detachable resistance wire 30303 or detachable resistance wires 30303 with other types and sizes are replaced, so that the functions of replacing the fusing insurance component 303 and changing the maximum current and the temperature threshold are realized.
As shown in fig. 11, 12, 13 and 14, when the power lithium battery 5 is clamped and fixed, the heat conduction tightening assembly 405 is pushed downwards, so that the sliding mounting groove 40503 of the fastening heat conduction cutting 40502 slides on the heat conduction sliding rail 406, during the sliding process, the fastening heat conduction cutting 40502 extrudes and stretches out the heat conduction copper block 40202 attached to the clamping assembly 402, the heat conduction copper block 40202 drives the sliding connection post 40201 to stretch out of the heat conduction shell 401, the heat conduction shell 401 drives the fastening heat conduction plate 40203 and the heat conduction patch 40204 to stretch out, so that the fastening heat conduction plate 40203 and the heat conduction patch 40204 are tightly attached to the surface of the power lithium battery 5, and at this time, the counterweight heat insulation cover 40501 can keep the stretching device for the fastening heat conduction plate 40203 due to gravity, so as to realize the clamping function on the power lithium battery 5; when the power lithium battery 5 heats, the fastening spring 404 tightly attaches the heat conducting copper block 40202 on the heat conducting and fastening component 405 and the fastening heat conducting insert 40502 together due to elastic force, the heat conducting patch 40204 transfers heat on the power lithium battery 5 from the heat conducting copper block 40202 to the fastening heat conducting insert 40502, the fastening heat conducting insert 40502 transfers heat to the heat conducting connecting pad 403, meanwhile, the heat conducting shell 401 transfers heat on the heat conducting sealing silica gel pad 102 to the heat conducting connecting pad 403, and the heat conducting connecting pad 403 transfers heat to the fuse connector 103 to realize a heat transfer function.
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the present invention without inventive labor, as those skilled in the art will recognize from the above-described concepts.
Claims (6)
1. The utility model provides a safe lithium cell group of overheated fusing, includes fusing alarm device (1), electrically conductive connecting device (2), overheated fusing device (3), heat conduction fastener (4), power lithium cell (5), its characterized in that: the fusing alarm device (1) is fixedly provided with an electric conduction connecting device (2), a heat conduction fastening device (4) and a power lithium battery (5), the fusing alarm device (1) uniformly distributes heat on each fusing connector (103) through a heat conduction sealing silica gel pad (102) to be used for keeping the temperature of the fusing connectors (103) consistent, and the fusing of the fusing connectors (103) and the pulling-down force of an alarm assembly (104) lead an alarm signal lamp (10406) to be lightened so as to be used for alarming after overheat fusing, and the heat conduction fastening device (4) drives the attaching clamping assembly (402) to stretch out and draw back to be tightly attached to the power lithium battery (5) through the movement of the heat conduction clamping assembly (405) so as to be used for clamping the lithium battery and transmitting heat through the heat conduction of the heat conduction clamping assembly (405); the overheat fusing device (3) is fixedly arranged on the conductive connecting device (2), the conductive connecting device (2) is connected with the positive electrode and the negative electrode of the power lithium battery (5) through the positive electrode conductive binding post (202) and the negative electrode conductive binding post (203) for outputting electric energy, the overheat fusing device (3) is used for overheat fusing protection through fusing the fusing insurance component (303), and the size of the detachable resistance wire (30303) on the fusing insurance component (303) is replaced for changing the current and the temperature threshold value; the fusing alarm device (1) further comprises an insulating protective shell (101), a heat-conducting sealing silica gel pad (102), a fusing connector (103), an alarm assembly (104), a mounting threaded hole (105) and a mounting groove (106); the heat conduction sealing silica gel pad (102) is fixedly arranged on the insulating protective shell (101); the fuse connector (103) is fixedly arranged on the insulating protective shell (101), and meanwhile, the fuse connector (103) is also fixedly arranged on the alarm assembly (104); the alarm assembly (104) is fixedly arranged on the insulating protective shell (101); the insulation protection shell (101) is provided with a mounting threaded hole (105) and a mounting groove (106), the mounting threaded hole (105) is used for fixing and positioning, and the mounting groove (106) is used for fixing and mounting; the fusing connector (103) further comprises a first magnetic attraction connecting shell (10301), a second magnetic attraction connecting shell (10302), a first fusing connecting column (10303), a second fusing connecting column (10304) and a fusing protection wire (10305); the first magnetic connection shell (10301) is fixedly arranged on the second magnetic connection shell (10302); the first fusing connecting column (10303) is fixedly arranged on the second magnetic connection shell (10302); the second fusing connecting column (10304) is fixedly arranged on the first magnetic connection shell (10301); two ends of the fusing protection wire (10305) are respectively and fixedly arranged on the first fusing connecting column (10303) and the second fusing connecting column (10304); the alarm assembly (104) further comprises an alarm lamp holder (10401), an alarm supporting plate (10402), an alarm capacitor (10403), an alarm conductive plug (10404), an alarm spring (10405) and an alarm signal lamp (10406); both ends of the alarm spring (10405) are respectively and fixedly arranged on the alarm lamp holder (10401) and the alarm supporting plate (10402); the alarm capacitor (10403) is fixedly arranged on the alarm supporting plate (10402); the alarm conductive plug (10404) is fixedly arranged on the alarm supporting plate (10402), and the alarm conductive plug (10404) is fixedly connected with the alarm capacitor (10403) through a lead; the alarm signal lamp (10406) is fixedly arranged on the alarm lamp holder (10401); the heat conduction fastening device (4) further comprises a heat conduction shell (401), a fitting clamping assembly (402), a heat conduction connecting pad (403), a fastening spring (404), a heat conduction tightening assembly (405) and a heat conduction sliding rail (406); the laminating clamping assembly (402) is slidably mounted on the heat conducting shell (401); the heat conduction connecting pad (403) is fixedly arranged on the heat conduction shell (401); two ends of the fastening spring (404) are respectively fixedly arranged on the heat conduction shell (401) and the attaching and clamping assembly (402); the heat conduction tightening component (405) is slidably arranged on the heat conduction shell (401); a heat conduction sliding rail (406) is arranged on the heat conduction shell (401).
2. The overheat, fusion-type and safe lithium battery pack of claim 1 wherein: the fitting clamping assembly (402) comprises a sliding connecting column (40201), a heat conducting copper block (40202), a fastening heat conducting plate (40203) and a heat conducting patch (40204); the sliding connecting column (40201) is fixedly arranged on the fastening heat-conducting plate (40203); the heat conduction copper block (40202) is fixedly arranged on the fastening heat conduction plate (40203), and meanwhile, the heat conduction copper block (40202) is fixedly connected with the heat conduction patch (40204); the heat conductive patch (40204) is fixedly mounted on the fastening heat conductive plate (40203).
3. The overheat, fusion-type safety lithium battery pack of claim 2 wherein: the heat conduction tightening assembly (405) comprises a counterweight heat insulation cover (40501), a fastening heat conduction insert (40502) and a sliding mounting groove (40503); the fastening heat conduction cutting (40502) is fixedly arranged on the counterweight heat insulation cover (40501), and meanwhile a sliding mounting groove (40503) is further formed in the fastening heat conduction cutting (40502).
4. A safety lithium battery pack of claim 3, wherein: the overheat fusing device (3) comprises a series connection conductive box (301), an insulating cover plate (302), a fusing insurance component (303) and a threaded binding post (304); the insulating cover plate (302) is fixedly arranged on the series conductive box (301); the fusing insurance component (303) is fixedly arranged on the threaded binding post (304), and meanwhile, an internal thread on the fusing insurance component (303) and an external thread on the threaded binding post (304) form a thread pair; the threaded binding post (304) is fixedly arranged on the series conductive box (301).
5. The overheat, fusion-type safety lithium battery pack of claim 4 wherein: the fusing insurance component (303) comprises a conductive copper seat (30301), an energizing plug (30302), a detachable resistance wire (30303) and a sealing insulating ring (30304); the energizing plug (30302) is fixedly arranged on the conductive copper seat (30301); the detachable resistance wire (30303) is fixedly arranged on the conductive copper seat (30301), and meanwhile, the detachable resistance wire (30303) is in contact conduction with the power-on plug (30302); the sealing insulating ring (30304) is fixedly arranged on the conductive copper seat (30301) and is used for fixedly sealing the detachable resistance wire (30303).
6. The overheat, fusion-type and safe lithium battery pack of claim 5 wherein: the conductive connecting device (2) comprises an insulating connecting plate (201), a positive conductive binding post (202), a negative conductive binding post (203), a mounting through hole (204) and a serial connector (205); the positive electrode conductive binding post (202) and the negative electrode conductive binding post (203) are fixedly arranged on the insulating connecting plate (201); the insulating connecting plate (201) is provided with a mounting through hole (204), and the mounting through hole (204) is used for fixing and positioning; the series connector (205) is fixedly arranged on the insulating connecting plate (201) and is used for connecting two adjacent rows of power lithium batteries (5) in series.
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| CN202311522789.2A CN117254220B (en) | 2023-11-15 | 2023-11-15 | Overheat fusing type safe lithium battery pack |
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| CN202311522789.2A CN117254220B (en) | 2023-11-15 | 2023-11-15 | Overheat fusing type safe lithium battery pack |
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| CN117254220A (en) | 2023-12-19 |
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