CN116505128B - Power battery with external ptc structure and use method - Google Patents
Power battery with external ptc structure and use method Download PDFInfo
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- CN116505128B CN116505128B CN202310447363.9A CN202310447363A CN116505128B CN 116505128 B CN116505128 B CN 116505128B CN 202310447363 A CN202310447363 A CN 202310447363A CN 116505128 B CN116505128 B CN 116505128B
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/249—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
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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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
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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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of power batteries, in particular to a power battery with an external ptc structure and a use method thereof. The technical scheme includes that the power battery pack is provided with a ptc structure outside the power battery pack, the ptc structure comprises a heat dissipation bottom plate and an external frame, a ptc heat conduction silica gel gasket is arranged on the upper surface of the heat dissipation bottom plate and below the power battery pack, an inserting strip is fixedly connected to the bottom of the external frame, a through hole for the inserting strip to vertically penetrate is formed in the heat dissipation bottom plate, the inserting strip is fixedly connected through a limit threaded pin after vertically penetrating the through hole, and a locating strip for carrying out center locating on the ptc heat conduction silica gel gasket is horizontally and slidably connected to the upper surface of the heat dissipation bottom plate. According to the invention, the power battery is assembled into the power battery pack, and then the external ptc structures such as the ptc heat-conducting silica gel gasket and the heat-dissipating bottom plate are added, so that the external ptc structures and the power battery are mutually independent, the independent operation is convenient, and the use is more flexible.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a power battery with an external ptc structure and a use method thereof.
Background
The power battery is a power source for providing power for tools, and is a storage battery for providing power for electric automobiles, electric trains, electric bicycles and golf carts.
The power battery can be by a plurality of batteries constitution group battery, and the conduction of heat is carried out to group battery below installation heat conduction silica gel gasket, and this kind is with the nimble dismouting of gasket not only influenced to the built-in connected mode of each battery direct and the gasket contact of group battery, also is difficult for carrying out independent processing to the group battery. Therefore, the invention provides the power battery with the external ptc structure and the use method thereof, and the external connection mode is easier for independent operation of the ptc heat conduction silica gel gasket and the battery pack.
Disclosure of Invention
The invention aims at solving the problems in the background technology and provides a power battery with an external ptc structure and a use method thereof.
The power battery with the external ptc structure comprises a power battery pack, wherein the ptc structure is arranged outside the power battery pack, the ptc structure comprises a heat radiation bottom plate and an external frame, a ptc heat conduction silica gel gasket is arranged on the upper surface of the heat radiation bottom plate and below the power battery pack, an inserting strip is fixedly connected to the bottom of the external frame, a through hole for the inserting strip to vertically penetrate is formed in the heat radiation bottom plate, the inserting strip is fixedly connected through a limit screw pin after vertically penetrating through the through hole, and a positioning strip for carrying out center positioning on the ptc heat conduction silica gel gasket is horizontally and slidably connected to the upper surface of the heat radiation bottom plate, and comprises two opposite first positioning strips and two opposite second positioning strips.
Preferably, the heat dissipation bottom plate is provided with a first positioning component for adjusting the distance between two first positioning strips, the first positioning component comprises a first screw shaft rotationally connected inside the heat dissipation bottom plate, the bottom of each first positioning strip is fixedly connected with a first screw sleeve, and the first screw sleeve is in screw sleeve joint with the first screw shaft.
Preferably, a first sliding groove is formed in the upper surface of the heat dissipation bottom plate, and a first sliding block matched with the first sliding groove is fixedly connected to the lower surface of the first positioning strip.
Preferably, the heat dissipation bottom plate is provided with the second locating component that is used for adjusting two second locating strip intervals, the second locating component is including rotating a pair of second screw shafts of connecting in the inside of heat dissipation bottom plate, the bottom fixedly connected with second swivel nut of second locating strip, the second swivel nut cup joints with the one end spiral of the single second screw shaft of corresponding position, the other end fixedly connected with gear A of second screw shaft, the bottom rotation of heat dissipation bottom plate is connected with the gear that can be connected with gear A meshing and links the axle.
Preferably, the gear connecting shaft comprises two gears B which are rotationally connected with the heat dissipation bottom plate through a rotating shaft and a connecting shaft which fixedly connects the two gears B, and the two gears B are respectively meshed and connected with the gears A at corresponding positions.
Preferably, a rotary groove for the connecting shaft to be clamped in is formed in the lower surface of the heat dissipation bottom plate, so that a larger rotation angle of the gear connecting shaft is provided, and the second positioning strip can translate for a larger distance.
Preferably, a second sliding groove is formed in the upper surface of the heat dissipation bottom plate, and a second sliding block matched with the second sliding groove is fixedly connected to the lower surface of the second positioning strip.
Preferably, the bottom fixedly connected with location sand grip of external frame, the upper surface of radiating bottom plate has seted up the constant head tank that enables the vertical card of location sand grip and go into.
Preferably, a plurality of heat dissipation holes are formed in positions, close to the lower edge, of each vertical plate of the external frame.
A method for using an external ptc structure power battery comprises the steps of firstly assembling a single power battery in a shell to form an integrated power battery pack, reserving a cavity at the bottom of the shell to be in contact with a ptc heat conduction silica gel gasket, enabling generated heat to be transmitted outwards through the ptc heat conduction silica gel gasket and a heat dissipation bottom plate, finally assembling an external frame on the heat dissipation bottom plate to complete external packaging of the power battery pack, arranging binding posts on the external frame, and electrically connecting the binding posts with the internal power battery pack.
Compared with the prior art, the invention has the following beneficial technical effects:
(1) According to the application, the power battery is assembled into the power battery pack, and then the external ptc structures such as the ptc heat-conducting silica gel gasket and the heat-dissipating bottom plate are added, so that the external ptc structures and the power battery are mutually independent, the independent operation is convenient, and the use is more flexible;
(2) The application can position the ptc heat conduction silica gel pad and the power battery pack thereon by the design of the positioning strip, thereby facilitating the assembly between the power battery pack and the external ptc structure.
Drawings
Fig. 1 is a schematic diagram of an external ptc structured power cell and method of use;
FIG. 2 is a schematic diagram of the separation structure of FIG. 1;
fig. 3 is a schematic connection diagram of the ptc thermally conductive silica gel pad, the heat dissipating bottom plate, and the positioning strips;
FIG. 4 is a schematic diagram of the connection of the positioning strips and the heat dissipating bottom plate;
FIG. 5 is a schematic diagram of the connection between the first positioning assembly, the second positioning assembly and the positioning strip;
Fig. 6 is a bottom schematic view of a heat dissipating bottom plate.
Reference numeral 1, a power battery pack;
2. A ptc structure;
21. A heat radiation bottom plate 211, a through hole 212, a rotary groove 213 and a positioning groove;
22. External frame 221, cutting 2211, limiting through hole 222, positioning convex strip 223 and heat dissipation hole;
23. ptc thermally conductive silicone pad;
24. A limit screw pin;
25. Positioning strips 251, first positioning strips 252 and second positioning strips;
26. The first positioning assembly comprises 261, a first screw shaft, 262, a first screw sleeve, 263, a first sliding block, 264 and a first sliding groove;
27. The second positioning component comprises 271, a second screw shaft, 272, a second screw sleeve, 273, a second sliding block, 274, a second sliding groove, 275, a gear A, 276, a gear connecting shaft, 2761, a rotating shaft, 2762, a gear B, 2763 and a connecting shaft.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.
Example 1
As shown in fig. 1-2, the power battery with an external ptc structure provided by the invention comprises a power battery pack 1. The power battery pack 1 is provided with the ptc structure 2 outside, and ptc structure 2 has included radiating bottom plate 21 and external frame 22, and radiating bottom plate 21 adopts aluminum plate, aluminum plate upper surface installation heat pipe, can carry out the conduction of heat well. The upper surface of the heat dissipation bottom plate 21 and the lower part of the power battery pack 1 are provided with ptc heat conduction silica gel gaskets 23, the four corners of the bottom of the external frame 22 are integrally and fixedly connected with a cutting 221, the heat dissipation bottom plate 21 is provided with a through hole 211 for the cutting 221 to vertically penetrate, the cutting 221 is provided with a limit through hole 2211, after the cutting 221 vertically penetrates through the through hole 211, the limit screw pin 24 horizontally moves to a threaded hole through the level arranged on the heat dissipation bottom plate 21 so as to be inserted into the corresponding limit through hole 2211, the limit of the external frame 22 on the heat dissipation bottom plate 21 is realized, the bottom of the external frame 22 is integrally and fixedly connected with a positioning raised line 222, the upper surface of the heat dissipation bottom plate 21 is provided with a positioning groove 213 which can be vertically clamped in by the positioning raised line 222, and the positioning groove 213 and the positioning raised line 222 are in a frame structure. A plurality of heat dissipation holes 223 are formed on each vertical plate of the external frame 22 near the lower edge, so as to increase the heat dissipation effect of the device.
The working principle of the embodiment is that a single power battery is assembled in a shell to form an integrated power battery pack 1, a cavity is reserved at the bottom of the shell to be in contact with a ptc heat conduction silica gel gasket 23, generated heat is transmitted outwards through the ptc heat conduction silica gel gasket 23 and a heat dissipation bottom plate 21, an external frame 22 is assembled on the heat dissipation bottom plate 21 to complete external packaging of the power battery pack 1, a binding post is arranged on the external frame 22 and is electrically connected with the internal power battery pack 1, and the ptc structure is externally connected in a way that the power battery pack 1 and the ptc structure are mutually independent and more flexible to use;
The above process of assembling the external frame 22 is that the external frame 22 is placed down on the heat dissipation base plate 21 as shown in fig. 1-2, the positioning protruding strips 222 are clamped into the positioning grooves 213, meanwhile, the inserts 221 pass through the corresponding through holes 211, then the limit screw pins 24 are rotated, and the limit screw pins 24 translate through screw connection with the threaded holes on the heat dissipation base plate 21 so as to pass through the corresponding limit through holes 2211, i.e. limit the external frame 22 on the heat dissipation base plate 21.
Example two
The invention provides a power battery with an external ptc structure, which comprises a power battery pack 1, wherein a ptc structure 2 is arranged outside the power battery pack 1, the ptc structure 2 comprises a heat dissipation bottom plate 21 and an external frame 22, a ptc heat conduction silica gel gasket 23 is arranged on the upper surface of the heat dissipation bottom plate 21 and below the power battery pack 1, an inserting strip 221 is integrally and fixedly connected to the four corners of the bottom of the external frame 22, a through hole 211 for the inserting strip 221 to vertically penetrate is formed in the heat dissipation bottom plate 21, a limiting through hole 2211 is formed in the inserting strip 221, after the inserting strip 221 vertically penetrates through the through hole 211, a limiting threaded pin 24 horizontally moves to a threaded hole through the level formed in the heat dissipation bottom plate 21 to be inserted into the corresponding limiting through hole 2211, so as to limit the external frame 22 on the heat dissipation bottom plate 21, a positioning raised strip 222 is integrally and fixedly connected to the bottom of the external frame 22, a positioning groove 213 capable of enabling the positioning raised strip 222 to vertically clamp in is formed on the upper surface of the heat dissipation bottom plate 21, and the positioning groove 213 and the positioning raised strip 222 are in a frame-shaped structure. A plurality of heat dissipation holes 223 are formed on each vertical plate of the external frame 22 near the lower edge, so as to increase the heat dissipation effect of the device.
Compared to the first embodiment, the present embodiment further includes:
As shown in fig. 3-4, the upper surface of the heat dissipation bottom plate 21 is horizontally and slidably connected with a positioning strip 25 for centering the ptc thermally conductive silica gel pad 23, and the positioning strip 25 includes two opposite first positioning strips 251 and two opposite second positioning strips 252.
As shown in fig. 4-5, the heat dissipation base plate 21 is provided with a first positioning component 26 for adjusting the distance between two first positioning strips 251, the first positioning component 26 comprises a first screw shaft 261 rotatably connected inside the heat dissipation base plate 21, the bottom of the first positioning strip 251 is fixedly connected with a first screw sleeve 262, and the first screw sleeve 262 is in screw sleeve connection with the end part of the first screw shaft 261. The upper surface of the heat dissipation bottom plate 21 is provided with a first sliding groove 264, and the lower surface of the first positioning strip 251 is fixedly connected with a first sliding block 263 matched with the first sliding groove 264.
As shown in fig. 4-6, the heat dissipation base plate 21 is provided with a second positioning assembly 27 for adjusting the distance between two second positioning strips 252, the second positioning assembly 27 comprises a pair of second screw shafts 271 rotatably connected inside the heat dissipation base plate 21, the bottom of each second positioning strip 252 is fixedly connected with a second screw sleeve 272, the second screw sleeve 272 is in screw sleeve connection with one end of a single second screw shaft 271 at a corresponding position, the other end of each second screw shaft 271 is fixedly connected with a gear a275, and the bottom of the heat dissipation base plate 21 is rotatably connected with a gear connecting shaft 276 capable of being in meshed connection with the gear a 275. The gear connecting shaft 276 comprises two gears B2762 which are rotatably connected with the heat dissipation bottom plate 21 through a rotating shaft 2761 and a connecting shaft 2763 which fixedly connects the two gears B2762, and the two gears B2762 are respectively meshed with the gears A275 at corresponding positions. The lower surface of the heat dissipation base plate 21 is provided with a rotation groove 212 for the connection shaft 2763 to be rotationally clamped in, so that a larger rotation angle of the gear connection shaft 276 is provided, and the second positioning strip 252 can translate more distances. A second sliding groove 274 is formed in the upper surface of the heat dissipation bottom plate 21, and a second sliding block 273 matched with the second sliding groove 274 is fixedly connected to the lower surface of the second positioning strip 252.
The working principle of the embodiment is that the ptc heat conduction silica gel gasket 23, namely the power battery pack 1 thereon, can be positioned at the center position of the heat dissipation bottom plate 21 through the first positioning bar 251 and the second positioning bar 252, the assembly is convenient, and the translation of the first positioning bar 251 and the second positioning bar 252 can be respectively realized through the first positioning assembly 26 and the second positioning assembly 27;
specifically, as shown in fig. 5, the first screw shaft 261 is rotated, and the first screw shaft 261 can drive the two first positioning strips 251 to reversely move through the screw connection with the first screw sleeve 262 so as to adjust the distance;
As shown in fig. 5-6, one of the second screw shafts 271 is rotated, the second screw shaft 271 drives a single second positioning bar 252 to translate through screw sleeve connection with the second screw sleeve 272, meanwhile, the gear a275 at the end of the second screw shaft 271 drives the whole gear connecting shaft 276 to rotate through meshed connection with one of the gears B2762, and further drives the other second screw shaft 271 to rotate through meshed connection between the other gear B2762 and the gear a275 at the corresponding position so as to drive the other second positioning bar 252 to translate.
The above-described embodiments are merely a few preferred embodiments of the present invention, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present invention and the related teachings of the above-described embodiments.
Claims (5)
1. The power battery with the external ptc structure comprises a power battery pack (1) and is characterized in that a ptc structure (2) is arranged outside the power battery pack (1), the ptc structure (2) comprises a radiating bottom plate (21) and an external frame (22), a ptc heat-conducting silica gel gasket (23) is arranged on the upper surface of the radiating bottom plate (21) and below the power battery pack (1), an inserting strip (221) is fixedly connected to the bottom of the external frame (22), a penetrating hole (211) for the vertical penetration of the inserting strip (221) is formed in the radiating bottom plate (21), the inserting strip (221) is fixedly connected with the upper surface of the radiating bottom plate (21) through a limit screw pin (24) after the vertical penetration of the inserting strip (211), and a positioning strip (25) for centering the ptc heat-conducting silica gel gasket (23) is horizontally and slidingly connected with the upper surface of the radiating bottom plate (21), and the positioning strip (25) comprises two opposite first positioning strips (251) and two opposite second positioning strips (252);
The heat dissipation base plate (21) is provided with a first positioning assembly (26) for adjusting the distance between two first positioning strips (251), the first positioning assembly (26) comprises a first screw shaft (261) rotatably connected inside the heat dissipation base plate (21), the bottom of the first positioning strips (251) is fixedly connected with a first screw sleeve (262), and the first screw sleeve (262) is in screw sleeve joint with the first screw shaft (261);
The heat dissipation bottom plate (21) is provided with a second positioning assembly (27) for adjusting the distance between two second positioning strips (252), the second positioning assembly (27) comprises a pair of second screw shafts (271) rotatably connected inside the heat dissipation bottom plate (21), the bottom of each second positioning strip (252) is fixedly connected with a second screw sleeve (272), the second screw sleeves (272) are in screw sleeve connection with one end of a single second screw shaft (271) at a corresponding position, the other end of each second screw shaft (271) is fixedly connected with a gear A (275), and the bottom of the heat dissipation bottom plate (21) is rotatably connected with a gear connecting shaft (276) capable of being in meshed connection with the gear A (275);
The gear connecting shaft (276) comprises two gears B (2762) which are rotationally connected with the heat dissipation bottom plate (21) through a rotating shaft (2761) and a connecting shaft (2763) which fixedly connects the two gears B (2762), and the two gears B (2762) are respectively meshed and connected with the gears A (275) at corresponding positions;
a rotary groove (212) for the connecting shaft (2763) to be clamped in a rotary way is formed in the lower surface of the radiating bottom plate (21) so as to provide a larger rotary angle of the gear connecting shaft (276) and enable the second positioning strip (252) to translate for a larger distance;
A second sliding groove (274) is formed in the upper surface of the heat dissipation bottom plate (21), and a second sliding block (273) matched with the second sliding groove (274) is fixedly connected to the lower surface of the second positioning strip (252).
2. The power battery with the external ptc structure according to claim 1, wherein the upper surface of the heat dissipation bottom plate (21) is provided with a first sliding groove (264), and the lower surface of the first positioning strip (251) is fixedly connected with a first sliding block (263) matched with the first sliding groove (264).
3. The power battery with the external ptc structure according to claim 1, wherein the bottom of the external frame (22) is fixedly connected with a positioning convex strip (222), and the upper surface of the heat dissipation bottom plate (21) is provided with a positioning groove (213) which can vertically clamp in the positioning convex strip (222).
4. The power battery with the external ptc structure according to claim 1, wherein a plurality of heat dissipation holes (223) are formed on each vertical plate of the external frame (22) near the lower edge.
5. The method for using the external ptc structure power battery according to claims 1-4, characterized in that the single power battery is assembled in the housing to form the integrated power battery pack (1), the cavity is reserved at the bottom of the housing to be in contact with the ptc heat conduction silica gel pad (23), the generated heat is transmitted outwards through the ptc heat conduction silica gel pad (23) and the heat dissipation bottom plate (21), finally the external frame (22) is assembled on the heat dissipation bottom plate (21) to complete the external packaging of the power battery pack (1), the external frame (22) is provided with the binding post, the binding post is electrically connected with the internal power battery pack (1), and the connection mode of the external ptc structure enables the power battery pack (1) and the ptc structure to be mutually independent, so that the use is more flexible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310447363.9A CN116505128B (en) | 2023-04-24 | 2023-04-24 | Power battery with external ptc structure and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310447363.9A CN116505128B (en) | 2023-04-24 | 2023-04-24 | Power battery with external ptc structure and use method |
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| CN116505128A CN116505128A (en) | 2023-07-28 |
| CN116505128B true CN116505128B (en) | 2025-01-03 |
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| WO2016155032A1 (en) * | 2015-03-31 | 2016-10-06 | 深圳市格瑞普电池有限公司 | Lithium ion battery having adjustable offset center of gravity |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210379183U (en) * | 2019-09-16 | 2020-04-21 | 捷威动力工业江苏有限公司 | A battery module end plate assembly and battery module |
| CN214848930U (en) * | 2021-06-17 | 2021-11-23 | 福州迪弗科技有限公司 | New forms of energy positioning device |
| CN218039596U (en) * | 2022-07-24 | 2022-12-13 | 合肥众禾动力新能源科技有限公司 | A casing for a power battery |
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| CN116505128A (en) | 2023-07-28 |
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Effective date of registration: 20250521 Address after: 223000 Jiangsu Province Suqian City Suqian Economic and Technological Development Zone Business Center Building Room 2237 Patentee after: Shilian New Energy Battery Suqian Co.,Ltd. Country or region after: China Address before: 223001 Huaian, Jiangsu Province, No. Salt Road, No. 8 Patentee before: SHIHLIEN CHEMICAL INDUSTRIAL JIANGSU CO. Country or region before: China |