CN204397155U - A kind of electron beam welding device - Google Patents
A kind of electron beam welding device Download PDFInfo
- Publication number
- CN204397155U CN204397155U CN201420667642.2U CN201420667642U CN204397155U CN 204397155 U CN204397155 U CN 204397155U CN 201420667642 U CN201420667642 U CN 201420667642U CN 204397155 U CN204397155 U CN 204397155U
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- China
- Prior art keywords
- negative terminal
- copper
- multiple layer
- red copper
- negative electrode
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Links
- 238000003466 welding Methods 0.000 title claims abstract description 57
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 144
- 239000010949 copper Substances 0.000 claims abstract description 144
- 229910052802 copper Inorganic materials 0.000 claims abstract description 144
- 230000017525 heat dissipation Effects 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a kind of electron beam welding device, comprise the red copper heat dissipation base being packed in and chassis being placed negative terminal welding ends and the base for supporting placing battery core, be characterized in: be connected with a vertically moveable briquetting above described red copper heat dissipation base, there is hollow slots at described briquetting middle part vertically; The multiple layer of copper negative electrode lug of drawing from battery core above negative terminal welding ends and negative terminal welding ends is accompanied between described briquetting and red copper heat dissipation base; Circumferentially there is a red copper radiating block at the middle part being positioned at multiple layer of copper negative electrode lug two ends; The other end of negative terminal is connected with a red copper heat-conducting block.The utility model is aimed at the electronics muzzle rifle in electron-beam welder by the hollow slots of briquetting, the interface of multiple layer of copper negative electrode lug and copper negative terminal is made to be fused into molten bath, multiple layer of copper negative electrode lug and negative terminal are fused into indivisible one, ensure that the reliability that multiple layer of copper negative electrode lug is connected with negative terminal, even if guarantee that the vibration of battery experience several times mechanics still can reliably working.
Description
Technical field
The utility model belongs to high power lithium ion cell technical field, particularly relates to a kind of electron beam welding device of high power lithium ion cell lug and pole.
Background technology
Features such as specific energy is high owing to having for lithium ion battery, discharge and recharge life-span length, serviceability temperature wide ranges and being widely used.Along with being showing improvement or progress day by day of electronic technology, require more and more higher to the high power of lithium ion battery.
Due to copper, to have thermal conductivity factor very high, and copper material has become the preferred material of high power lithium ion cell negative terminal and multiple layer of copper negative electrode lug.Multiple layer of copper negative electrode lug and the copper negative terminal of high-power battery should not adopt electric resistance welding mode to be connected; Because the reflectivity of copper is higher, should not adopt Laser Welding, the high-power battery multiple layer of copper negative electrode lug number of plies is more in addition, inherently increases the difficulty of welding, and at present, riveted joint becomes the main flow connected mode of multiple layer of copper negative electrode lug and copper negative terminal.
In conventional environment, the riveting method of high power lithium ion cell multiple layer of copper negative electrode lug and copper negative terminal can meet instructions for use.Along with the development of aeronautical and space technology, the high power of high power lithium ion cell and the requirement of high reliability are also improved thereupon, because aerospace environment has the particularity that complicated mechanics vibrates and the temperature difference is very large, the multiple layer of copper negative electrode lug of riveting in high power lithium ion cell and copper negative terminal are in use, because battery will experience the high/low temperature circulation that several times mechanics vibrates and the temperature difference is very large, the riveted joint position of multiple layer of copper negative electrode lug and copper negative terminal can loosen, cause the virtual connection of battery electrode, affect battery operated reliability, shorten the service life of battery.
Summary of the invention
The utility model is solve the technical problem existed in background technology, after a kind of experience several times mechanics vibration or high/low temperature circulation are provided, still can ensure that multiple layer of copper negative electrode lug is reliably connected with copper negative terminal, guarantee a kind of electron beam welding device of battery reliably working.
The utility model comprises following technical scheme:
A kind of electron beam welding device, comprise the red copper heat dissipation base being packed in and chassis being placed negative terminal welding ends and the base for supporting placing battery core, be characterized in: be connected with a vertically moveable briquetting above described red copper heat dissipation base, there is hollow slots at described briquetting middle part vertically; The multiple layer of copper negative electrode lug of drawing from battery core above negative terminal welding ends and negative terminal welding ends is accompanied between described briquetting and red copper heat dissipation base; Circumferentially there is a red copper radiating block at the middle part being positioned at multiple layer of copper negative electrode lug two ends; The other end of negative terminal is connected with a red copper heat-conducting block.
The utility model can also adopt following technical measures:
Described chassis is fixed the protective cover that covers battery core, be positioned at battery core draw multiple layer of copper negative electrode lug position protective cover on have an opening.
Described negative terminal welding ends is copper negative terminal welding ends; Described red copper heat dissipation base upper surface is shaped with the retention grooves identical with copper negative terminal welding ends width.
Described red copper radiating block is vertically with the cuboid of two specular of groove, and the side of two cuboids is for being flexibly connected, and opposite side is locking connection.
Described red copper heat-conducting block is shaped with the tapped blind hole be threaded with negative terminal, and the length of described tapped blind hole is less than the length of the thread spindle of negative terminal.
The advantage that the utility model has and good effect are:
1, the multiple layer of copper negative electrode lug clamping that the utility model will be drawn above negative terminal welding ends and negative terminal welding ends by briquetting and red copper heat dissipation base from battery core, the electronics muzzle rifle in electron-beam welder is aimed at by the hollow slots in the middle part of briquetting vertical direction, the interface of multiple layer of copper negative electrode lug and copper negative terminal is melted, form molten bath, the multiple layer of copper negative electrode lug of identical material and negative terminal welding is made to become indivisible one, ensure that the reliability that multiple layer of copper negative electrode lug is connected with negative terminal, even if the possibility of multiple layer of copper negative electrode lug and negative terminal virtual connection also can not be there is under mechanics vibration or high/low temperature circulation, ensure, between multiple layer of copper negative electrode lug and negative terminal, both there is good conductive effect, there is again very high mechanical strength, even if guarantee the mechanics vibration of battery experience several times or high/low temperature circulation, still can reliably working.
2, the most of heat produced when the utility model has taken away fusing multiple layer of copper negative electrode lug and negative terminal by red copper heat dissipation base; Taken away from multiple layer of copper negative electrode lug by the heat produced during the electron beam welding of red copper radiating block, effectively prevent because heat is delivered to along multiple layer of copper negative electrode lug the barrier film fusing that battery core causes, and multiple monolithic negative electrode lugs that battery core is drawn are fixed together; By connecting a red copper tapped blind hole red copper heat-conducting block at negative terminal away from the threaded one end of multiple layer of copper negative electrode lug, on red copper heat-conducting block, the length of tapped blind hole is less than the length of thread spindle on negative terminal, guarantee that the end of negative terminal withstands on the bottom of red copper heat-conducting block tapped blind hole, make the heat on negative terminal to the opposite direction transmission having multiple layer of copper negative electrode lug, red copper heat-conducting block prevents further because too much heat is delivered to battery core side and damages battery core.
3, the utility model by fixing the protective cover that covers battery core on chassis, effectively prevent foreign material and fall into battery core, ensure that the safe, reliable of battery.
Accompanying drawing explanation
Fig. 1 is the utility model multiple layer of copper negative electrode lug and negative terminal device for welding schematic diagram;
Fig. 2 is the schematic perspective view of Fig. 1;
Fig. 3 is the welding position schematic diagram of the utility model multiple layer of copper negative electrode lug and negative terminal.
In figure, 1-chassis, 2-red copper heat-conducting block; 3-negative terminal, 4-briquetting, 5-negative terminal welding ends; 6-multiple layer of copper negative electrode lug, 7-red copper heat dissipation base, 8-red copper radiating block; 9-base for supporting, 10-battery core, 11-protective cover; 12-multiple layer of copper negative electrode lug and negative terminal interface; the cross-sectional width in molten bath on 13-interface, 14-molten bath, the degree of depth in 15-molten bath.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be disclosed further, be described in detail as follows especially exemplified by following instance:
A kind of electron beam welding device, comprise the red copper heat dissipation base being packed in and chassis being placed negative terminal welding ends and the base for supporting placing battery core, be characterized in: be connected with a vertically moveable briquetting above described red copper heat dissipation base, there is hollow slots at described briquetting middle part vertically; The multiple layer of copper negative electrode lug of drawing from battery core above negative terminal welding ends and negative terminal welding ends is accompanied between described briquetting and red copper heat dissipation base; Circumferentially there is a red copper radiating block at the middle part being positioned at multiple layer of copper negative electrode lug two ends; The other end of negative terminal is connected with a red copper heat-conducting block.
Described chassis is fixed the protective cover that covers battery core, be positioned at battery core draw multiple layer of copper negative electrode lug position protective cover on have an opening.
Described negative terminal welding ends is copper negative terminal welding ends; Described red copper heat dissipation base upper surface is shaped with the retention grooves identical with copper negative terminal welding ends width.
Described red copper radiating block is vertically with the cuboid of two specular of groove, and the side of two cuboids is for being flexibly connected, and opposite side is locking connection.
Described red copper heat-conducting block is shaped with the tapped blind hole be threaded with negative terminal, and the length of described tapped blind hole is less than the length of the thread spindle of negative terminal.
Manufacturing process of the present utility model
Step 1: the part making electron beam welding device
As Figure 1-Figure 2, aluminium alloy makes and simultaneously uses the rectangular plate of screw as chassis 1 with being fixedly connected with; Make red copper heat dissipation base 7, red copper radiating block 8 and red copper heat-conducting block 2 respectively; Select stainless steel to make the briquetting 4 be connected with red copper heat dissipation base, there is a hollow slots at described briquetting middle part vertically; The polytetrafluoroethylene (PTFE) block making area of plane is selected to be greater than the base for supporting 9 of battery core; Aluminium alloy makes the protective cover 11 that can cover battery core;
Step 2: assembling multiple layer of copper negative electrode lug and negative terminal electron beam welding device
(1) the base for supporting of the red copper heat dissipation base and placement battery core 10 of placing copper negative terminal welding ends 5 is packed on chassis; The upper surface of red copper heat dissipation base makes the retention grooves identical with copper negative terminal welding ends width, copper negative terminal welding ends is placed in the retention grooves of red copper heat dissipation base, the multiple layer of copper negative electrode lug 6 of drawing from battery core is placed on the end face of copper negative terminal welding ends, briquetting is pressed on multiple layer of copper negative electrode lug, by briquetting and red copper heat dissipation base, negative terminal welding ends and negative terminal welding ends are clamped, to ensure multiple layer of copper negative electrode lug and negative terminal welding ends close contact;
(2) a periphery of the multiple layer of copper negative electrode lug between battery core exit and welding ends clamps with red copper radiating block; Described red copper radiating block is vertically with the cuboid of two specular of groove, and the side of two cuboids is for being flexibly connected, and opposite side is locking connection;
(3) described red copper heat-conducting block is shaped with the tapped blind hole be threaded with negative terminal, the length of described tapped blind hole is less than the length of the thread spindle of negative terminal, red copper heat-conducting block is connected to the other end of negative terminal 3;
(4) be packed on the protective cover on chassis and have an opening, on the multiple layer of copper negative electrode lug that described opening sleeve is drawn in battery core; Complete the manufacturing process of multiple layer of copper negative electrode lug and negative terminal electron beam welding device.
The course of work of the present utility model
(1) the device that step 1 is assembled is put into electron-beam welder vacuum chamber, the hollow slots on briquetting aims at the electronics muzzle in electron-beam welder, by vacuum chamber;
(2) start electron-beam welder, electron gun sends in hollow slots that electron beam outputs on briquetting to penetrate multiple layer of copper negative electrode lug and squeeze in negative terminal and forms a molten bath 14, the weld seam that multiple layer of copper negative electrode lug and negative terminal interface 12 are formed is fused into one, the degree of depth 15 in molten bath controlled at the thickness being greater than multiple layer of copper negative electrode lug, be less than multiple layer of copper negative electrode lug thickness and negative terminal welding ends thickness sum, control the width 13 of center, molten bath cross section on multiple layer of copper negative electrode lug and negative terminal interface at more than 0.5mm, as shown in Figure 3; Complete the electron beam welding process at a place between multiple layer of copper negative electrode lug and negative terminal interface.
Operation principle of the present utility model
The utility model passes through the interface of beam bombardment multiple layer of copper negative electrode lug and negative terminal, huge kinetic transformation is heat energy, penetrating multiple layer of copper negative electrode lug makes the interface of multiple layer of copper negative electrode lug and negative terminal melt, form molten bath, multiple layer of copper negative electrode lug and the negative terminal welding of identical material become indivisible one, even if the possibility of multiple layer of copper negative electrode lug and negative terminal virtual connection also can not be there is under mechanics vibration or high/low temperature circulation, ensure, between multiple layer of copper negative electrode lug and negative terminal, both there is good conductive effect, there is again very high mechanical strength, even if guarantee the mechanics vibration of battery experience several times or high/low temperature circulation, still can reliably working.For heat fusing multiple layer of copper negative electrode lug and negative terminal produced sheds fast, the red copper heat dissipation base having selected red copper to make in the device of assembling has taken away most of heat; For multiple monolithic negative electrode lugs of battery core being drawn are fixed together, and prevent because heat is delivered to along multiple layer of copper negative electrode lug the barrier film fusing that battery core causes, on the multiple layer of copper negative electrode lug between red copper heat dissipation base and battery core, hard-pressed bale one encloses the red copper radiating block that red copper is made; By connecting a red copper tapped blind hole red copper heat-conducting block at negative terminal away from the threaded one end of multiple layer of copper negative electrode lug, guarantee that the thread spindle end of negative terminal withstands on the bottom of tapped blind hole on red copper heat-conducting block, make the heat on negative terminal to the opposite direction transmission having multiple layer of copper negative electrode lug, red copper heat-conducting block prevents further because too much heat is delivered to battery core side and damages battery core, ensure that multiple layer of copper negative electrode lug and negative terminal do not damage any parts on battery in electron beam welding process.
Although be described preferred embodiment of the present utility model above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing under the ambit that the utility model aim and claim protect, a lot of form can also be made.These all belong within protection domain of the present utility model.
Claims (5)
1. an electron beam welding device, comprise the red copper heat dissipation base being packed in and chassis being placed negative terminal welding ends and the base for supporting placing battery core, it is characterized in that: be connected with a vertically moveable briquetting above described red copper heat dissipation base, there is hollow slots at described briquetting middle part vertically; The multiple layer of copper negative electrode lug of drawing from battery core above negative terminal welding ends and negative terminal welding ends is accompanied between described briquetting and red copper heat dissipation base; Circumferentially there is a red copper radiating block at the middle part being positioned at multiple layer of copper negative electrode lug two ends; The other end of negative terminal is connected with a red copper heat-conducting block.
2. a kind of electron beam welding device according to claim 1, is characterized in that: described chassis is fixed the protective cover that covers battery core, is positioned on protective cover that battery core draws multiple layer of copper negative electrode lug position and has an opening.
3. a kind of electron beam welding device according to claim 1, is characterized in that: described negative terminal welding ends is copper negative terminal welding ends; Described red copper heat dissipation base upper surface is shaped with the retention grooves identical with copper negative terminal welding ends width.
4. a kind of electron beam welding device according to claim 1, is characterized in that: described red copper radiating block is vertically with the cuboid of two specular of groove, and the side of two cuboids is for being flexibly connected, and opposite side connects for locking.
5. a kind of electron beam welding device according to claim 1, it is characterized in that: described red copper heat-conducting block is shaped with the tapped blind hole be threaded with negative terminal, the length of described tapped blind hole is less than the length of the thread spindle of negative terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667642.2U CN204397155U (en) | 2014-11-10 | 2014-11-10 | A kind of electron beam welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667642.2U CN204397155U (en) | 2014-11-10 | 2014-11-10 | A kind of electron beam welding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204397155U true CN204397155U (en) | 2015-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420667642.2U Expired - Fee Related CN204397155U (en) | 2014-11-10 | 2014-11-10 | A kind of electron beam welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204397155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001919A (en) * | 2019-12-27 | 2020-04-14 | 哈尔滨工业大学 | Thick plate aluminum alloy electron beam welding follow-up temperature field regulating and controlling device and welding method thereof |
-
2014
- 2014-11-10 CN CN201420667642.2U patent/CN204397155U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001919A (en) * | 2019-12-27 | 2020-04-14 | 哈尔滨工业大学 | Thick plate aluminum alloy electron beam welding follow-up temperature field regulating and controlling device and welding method thereof |
| CN111001919B (en) * | 2019-12-27 | 2021-06-22 | 哈尔滨工业大学 | Thick plate aluminum alloy electron beam welding follow-up temperature field regulating and controlling device and welding method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180515 Address after: 300384 Tianjin Binhai New Area Huayuan Industrial Area (outside the ring) Hainai Hua five road 6, 6 buildings. Patentee after: TIANJIN SPACE POWER TECHNOLOGY Co.,Ltd. Address before: 300384 No. 6, Hua Ke seven road, hathai Industrial Park, Xiqing District, Tianjin Patentee before: The 18th Research Institute of China Electronics Technology Group Corporation |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |