CN206003880U - Vacuum liquid injection machine for lithium ion battery and its lithium ion battery liquid injection header structure - Google Patents
Vacuum liquid injection machine for lithium ion battery and its lithium ion battery liquid injection header structure Download PDFInfo
- Publication number
- CN206003880U CN206003880U CN201620779725.XU CN201620779725U CN206003880U CN 206003880 U CN206003880 U CN 206003880U CN 201620779725 U CN201620779725 U CN 201620779725U CN 206003880 U CN206003880 U CN 206003880U
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- CN
- China
- Prior art keywords
- liquid injection
- ion battery
- lithium ion
- seal
- header structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002347 injection Methods 0.000 title claims abstract description 102
- 239000007924 injection Substances 0.000 title claims abstract description 102
- 239000007788 liquid Substances 0.000 title claims abstract description 65
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 48
- 238000002955 isolation Methods 0.000 claims abstract description 25
- 238000004891 communication Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 abstract description 18
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model is related to technical field of lithium-ion battery, there is provided a kind of vacuum liquid injection machine for lithium ion battery and its lithium ion battery liquid injection header structure.The lithium ion battery liquid injection header structure includes filling head body and the seal being sealingly disposed in the liquid outlet of filling head body, offers isolation channel and lead to the reservoir channel in the intrinsic fluid injection chamber of filling head on seal；When seal is conflicted with cell cover plate, reservoir channel connects fluid injection chamber and the liquid injection hole on cell cover plate, and isolation channel is located at outside the rivet on cell cover plate.Thus, during electrolyte is injected into battery by fluid injection chamber, electrolyte can't be leaked into outside reservoir channel, therefore will not be remained on cell cover plate in a large number after fluid injection is finished, it is to avoid cause to waste；While also will not enter in isolation channel and contact with rivet and the corrosion to rivet is caused, fluid injection quality is finally improved, make fluid injection operation more efficiently, simply.
Description
Technical field
The utility model relates to technical field of lithium-ion battery, there is provided a kind of vacuum liquid injection machine for lithium ion battery and its
Lithium ion battery liquid injection header structure.
Background technology
Cylindrical eccentric liquid injection hole lithium-ion-power cell is needed through fluid injection operation, the purpose of this operation in preparation process
It is so that electrolyte is sufficiently contacted with battery core.As cylindrical aluminium case lithium ion power battery liquid-injection mouth is less, for reaching more preferably
Fluid injection effect, need pressurizeed in fluid injection.
And original filling head is only columnar hollow channel structure, middle hole is larger, liquid injection hole directly with whole electricity
Pond upper cover plate is connected, and after causing fluid injection, electrolyte remains in whole lid surface, causes the wasting phenomenon of electrolyte very serious；Separately
Outward, electrolyte can be also remained on the rivet at cover plate central region and rivet edge, the electrolyte remained when this and in the air
After contact with moisture, generation hydrofluoric acid can be reacted, the nickel coating to upper cover plate rivet surface causes certain corrosion so that battery core exists
Follow-up make and use during rivet surface the phenomenon that gets rusty occurs, cause bad order even use etc. serious
Quality problems.
Utility model content
(1) technical problem to be solved
To be solved in the utility model is that existing lithium ion battery liquid injection head electrolyte in fluid injection is easily wasted, and electricity
Solution liquid easily remains the technical problem with the rivet on corrosion cell upper cover plate.
(2) technical scheme
For solving above-mentioned technical problem, the utility model provides a kind of lithium ion battery liquid injection header structure, the filling head
Including filling head body and the seal being sealingly disposed in the liquid outlet of the filling head body, offer on the seal
Isolation channel and the reservoir channel for leading to the intrinsic fluid injection chamber of the filling head；When the seal is conflicted with cell cover plate
When, the reservoir channel connects the fluid injection chamber and the liquid injection hole on cell cover plate, and the isolation channel is located at cell cover
Outside rivet on plate.
Preferably, the liquid injection port inner circumferential of filling head body offers cannelure, and seal is circumferentially extending outward to be provided with positioning
Boss, the positioning boss are embedded in the cannelure.
Preferably, the reservoir channel is the loop configuration that circumference is opened up on the seal.
Preferably, multiple first fixed beams are connected between the inwall of the reservoir channel and outer wall.
Preferably, offer for the draw-in groove with filling machine clamping on the outer wall of the filling head body.
Preferably, the isolation channel is in communication with the outside by passage.
Preferably, the passage includes to be arranged on intrinsic first airway of the filling head and is arranged on described close
On sealing, lead to the second airway of the isolation channel, go out liquid when what the seal was sealingly disposed in the filling head body
When in mouthful, first airway is connected with second airway.
Preferably, it is taper-face contact before first airway and second airway.
Preferably, multiple second fixed beams are connected between first airway and the inwall in fluid injection chamber.
The utility model additionally provides a kind of vacuum liquid injection machine for lithium ion battery, the filling machine include lithium as above from
Sub- battery liquid-filling header structure.
(3) beneficial effect
A kind of vacuum liquid injection machine for lithium ion battery and its lithium ion battery liquid injection header structure that the utility model is provided, pass through
A seal is set up at the liquid outlet of the filling head body, using the reservoir channel on the seal by cell cover plate
Liquid injection hole connect with the intrinsic fluid injection chamber of filling head, while using the isolation channel on the seal by cell cover plate
Rivet separates with respect to reservoir channel, and during electrolyte is injected into battery by fluid injection chamber, electrolyte can't be leaked into
Outside reservoir channel, therefore will not be remained on cell cover plate in a large number after fluid injection is finished, it is to avoid cause to waste；While also not
Can enter in isolation channel and contact with rivet and the corrosion to rivet is caused, fluid injection quality is finally improved, operate fluid injection
More efficiently, simple.
Description of the drawings
Fig. 1 is a kind of stereogram of lithium ion battery liquid injection header structure of the utility model embodiment.
Fig. 2 is a kind of sectional view of lithium ion battery liquid injection header structure of the utility model embodiment.
Fig. 3 is the sectional view of the sleeve of the utility model embodiment.
Fig. 4 is the sectional view of the bushing of the utility model embodiment.
Fig. 5 is the upward view of the bushing of the utility model embodiment.
Fig. 6 is the sectional view of the seal of the utility model embodiment.
Fig. 7 is the upward view of the seal of the utility model embodiment.
Fig. 8 is the section view that a kind of lithium ion battery liquid injection header structure of the utility model embodiment is coordinated with cell cover plate
Figure.
Reference：
1st, filling head body；2nd, sleeve；3rd, bushing；4th, seal；5th, draw-in groove；6th, cannelure；8th, the first airway；9th, bore
Shape enlarging；11st, bullet；12nd, the second airway；13rd, positioning boss；14th, reservoir channel；15th, curved channel；16th, on battery
Cover plate；17th, liquid injection hole；18th, fluid injection chamber；19th, the second fixed beam；20th, the first fixed beam；21st, rivet；22nd, isolation channel.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used for the utility model to be described, but is not limited to scope of the present utility model.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " connects "
Should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be direct phase
Even, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, can be with concrete condition understanding
State concrete meaning of the term in the utility model.
In conjunction with shown in Fig. 1 to Fig. 5, a kind of lithium ion battery liquid injection header structure that the utility model embodiment is provided, including
Filling head body 1 and seal 4；Filling head body 1 can be made up of split type sleeve 2 and bushing 3, and sleeve 2 is hollow cylinder
Shape structure, the diameter of the bottom of sleeve 2 are big compared with the diameter on its top；Bushing 3 can be made using polytetrafluoro material, be substantially also round
Tubular structure, external diameter are adapted with the internal diameter of the bottom of sleeve 2, are plugged on the bottom of sleeve 2 by interference fit, thus, set
The inner space limited by cylinder 2 and bushing 3 just defines the fluid injection chamber 18 of filling head body 1, and the opening of the bottom of bushing 3 is just
Become the liquid outlet in the fluid injection chamber 18；Seal 4 can be made up of fluorubber material, its shape and size substantially with bushing 3
Inwall shape and size be adapted；As shown in figure 3, circumference offers cannelure 6,4 periphery of seal on the inwall of sleeve 2
Positioning boss 13 is provided with to extension, the positioning boss 13 is embedded in cannelure 6, so that seal 4 is formed with the inwall of bushing 3
In sealing contact, and partial seal 4 exposes by the bottom of sleeve 2, coordinates for conflicting with the compression of cell cover plate 16.
In conjunction with shown in Fig. 6 to Fig. 8, being further opened with isolation channel 22 on the lateral surface of seal 4 and lead to filling head body 1
The reservoir channel 14 in interior fluid injection chamber 18；When seal 4 is conflicted with cell cover plate 16, the bottom of reservoir channel 14 is close to
Liquid injection hole 17 on cell cover plate 16 is simultaneously located at wherein by the top surface of cell cover plate 16, so as to by fluid injection chamber 18 and electricity
Liquid injection hole 17 on pond upper cover plate 16 is connected, so that the electrolyte in fluid injection chamber 18 is injected in battery；The notch of isolation channel 22
Also outside the rivet 21 that is close to the top surface of cell cover plate 16 and is located on cell cover plate 16, so as to rivet 21 is enclosed
It is located in a space mutually completely cut off with reservoir channel 14.During electrolyte is injected into battery by fluid injection chamber 18, electricity
Solution liquid can't be leaked into outside reservoir channel 14, therefore will not be remained in a large number on cell cover plate 16 after fluid injection is finished,
Avoid causing to waste；While also will not enter in isolation channel 22 and contact with rivet 21 and cause the corrosion to rivet 21, most
Improve fluid injection quality eventually, make fluid injection operation more efficiently, simply.
Wherein, reservoir channel 14 is preferably the loop configuration that circumference is opened up on seal 4, i.e. the reservoir channel 14
Section is loop configuration, therefore, for widely used centering type liquid injection hole battery, even if seal 4 and cell cover
Rotate against between plate 16, on cell cover plate 16, the liquid injection hole 17 of eccentric setting is all connected with the reservoir channel 14 all the time
Logical, that is to say, that in the operation that seal 4 and cell cover plate 16 are mutually compressed, need not consider liquid injection hole 17 whether with note
The relative problem of liquid passage 14, facilitates operation.Furthermore it is also possible on the upper cover plate of battery the multiple liquid injection holes of circumference array
17, the circumference of 17 array of multiple liquid injection holes is relative with the reservoir channel 14 of annular, so need not equally consider liquid injection hole 17 whether
The problem relative with reservoir channel 14, but also electrolyte injection flow can be improved, so as to improve fluid injection efficiency.
Certainly, the liquid injection hole 17 on cell cover plate 16 also and is not limited to the eccentric setting mode shown in accompanying drawing,
Also there is the form that liquid injection hole 17 is arranged on 16 center of cell cover plate, in this regard, reservoir channel of the present utility model 14 and isolation
The position of groove 22 is arranged can also be corresponding with the position of liquid injection hole 17 and rivet 21, as long as realize reservoir channel 14 can connect
Liquid injection hole on fluid injection chamber and cell cover plate, isolation channel are located at the rivet on cell cover plate Wai.
Further, as seal 4 can be divided into inner ring and outerring two parts by the reservoir channel 14 of annular, therefore,
Multiple first fixed beams 20, multiple first fixed beams are preferably also associated between the inwall and outer wall of the reservoir channel 14 of annular
20 cylinders are uniform, so as to the annular inner portion of seal 4 and outer ring portion are firmly connected as an entirety, per adjacent two
Curved channel 15 between first fixed beam 20 is used for passing through electrolyte.
In addition, isolation channel 22 is preferably in communication with the outside by passage, due to the presence of the passage, when seal 4 with
When cell cover plate 16 is compressed, the inner space of isolation channel 22 is reduced because of compression, the gas inside isolation channel 22 can lead to
Cross the passage to discharge, therefore will not affect isolation channel 22 and cell cover plate 16 because gases at high pressure being formed in isolation channel 22
Between sealing effectiveness.
Further, the passage includes the first airway 8 being arranged in filling head body 1 and is arranged on seal 4
The second airway 12 that is upper, leading to isolation channel 22, when seal 4 is sealingly disposed in the liquid outlet of filling head body 1, first
Airway 8 is connected with the second airway 12.And, it is taper-face contact between the first airway 8 and the second airway 12, such as,
The bottom of the first airway 8 can be set to pyramidal structure, i.e. the taper enlarging 12 of enlarging shape, while by the second airway 12
Residing partial seal 4 is set to bullet 11, and second airway 12 is then opened in the pyramidal center, works as taper
When body is contacted with the taper enlarging 9 of 12 bottom of the second airway, taper-face contact therebetween can be oriented to naturally, most
End form becomes to be in close contact, and the top of the second airway 12 can be moved to the bottom of the first airway 8 just to position, make the
One airway 8 is formed with the second airway 12 and is closely connected.
First airway 8 is preferably connected with the inwall in fluid injection chamber 18 by multiple second fixed beams 19, and multiple second fix
19 circumference uniform distribution of beam, for forming stable support to the first airway 8, to ensure which is being in close contact with the second airway 12
When do not deform.
The present embodiment additionally provides a kind of vacuum liquid injection machine for lithium ion battery, the vacuum liquid injection machine for lithium ion battery include as
Upper described lithium ion battery liquid injection header structure, preferably offers draw-in groove 5 in the outer wall of filling head body, by the draw-in groove 5 with
The head of filling machine forms fast inserting structure.Before fluid injection, fluid injection head quantitatively weighs electrolyte, is injected into 18 body of fluid injection chamber, so
Afterwards overall fluid injection support is moved in autoclave and vacuumized, battery core internal gas are extracted out, now electrolyte slowly can enter
Enter inside battery core, pressurizeed after vacuumizing end, remaining electrolyte is all pressed into inside battery core, and electricity is caused by pressurization
Solution liquid energy enough preferably infiltrates battery core inner pole piece and barrier film.Reduce pressure after fluid injection is complete, by related for filling machine fluid injection support electricity
Pond integrally removes autoclave, then rises and go lower electricity by the fluid injection machine support upper cover plate with filling liquid to new type lithium ion battery head
Pond, completes fluid injection, is to increase fluid injection efficiency fluid injection machine support to may be designed to parallel-connection structure, and concrete parallel connection quantity can be according to autoclave
Size be adjusted.By modifying to the structure of original filling head, the structure of the seal of increase, whole so as to improve
The fluid injection quality of machine, reduce the waste of electrolyte and solve the problems, such as that the rivet that original fluid injection header structure is caused gets rusty.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from the utility model know-why, some improvement and replacement can also be made, these change
Enter and replace also to should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of lithium ion battery liquid injection header structure, it is characterised in that including filling head body and be sealingly disposed in the fluid injection
Seal in the liquid outlet of head body, offers isolation channel and leads to the intrinsic fluid injection of the filling head on the seal
The reservoir channel in chamber；When the seal is conflicted with cell cover plate, the reservoir channel connects the fluid injection chamber and battery
Liquid injection hole on upper cover plate, the isolation channel are located at outside the rivet on cell cover plate.
2. lithium ion battery liquid injection header structure according to claim 1, it is characterised in that in the liquid injection port of filling head body
Circumference offers cannelure, and seal is circumferentially extending outward to be provided with positioning boss, and the positioning boss is embedded in the cannelure.
3. lithium ion battery liquid injection header structure according to claim 1, it is characterised in that the reservoir channel be described
The loop configuration that circumference is opened up on seal.
4. lithium ion battery liquid injection header structure according to claim 3, it is characterised in that the inwall of the reservoir channel with
Multiple first fixed beams are connected between outer wall.
5. lithium ion battery liquid injection header structure according to claim 1, it is characterised in that the outer wall of the filling head body
On offer for the draw-in groove with filling machine clamping.
6. the lithium ion battery liquid injection header structure according to any one of claim 1 to 5, it is characterised in that the isolation channel
It is in communication with the outside by passage.
7. lithium ion battery liquid injection header structure according to claim 6, it is characterised in that the passage includes to be arranged on
Intrinsic first airway of the filling head and the second airway of the isolation channel is arranged on the seal, leads to,
When the seal is sealingly disposed in the liquid outlet of the filling head body, first airway and described second is ventilated
Road is connected.
8. lithium ion battery liquid injection header structure according to claim 7, it is characterised in that first airway with described
It is taper-face contact before second airway.
9. lithium ion battery liquid injection header structure according to claim 7, it is characterised in that first airway and fluid injection
Multiple second fixed beams are connected between the inwall in chamber.
10. a kind of vacuum liquid injection machine for lithium ion battery, it is characterised in that include lithium as described in any one of claim 1 to 9 from
Sub- battery liquid-filling header structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620779725.XU CN206003880U (en) | 2016-07-22 | 2016-07-22 | Vacuum liquid injection machine for lithium ion battery and its lithium ion battery liquid injection header structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620779725.XU CN206003880U (en) | 2016-07-22 | 2016-07-22 | Vacuum liquid injection machine for lithium ion battery and its lithium ion battery liquid injection header structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206003880U true CN206003880U (en) | 2017-03-08 |
Family
ID=58201040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620779725.XU Active CN206003880U (en) | 2016-07-22 | 2016-07-22 | Vacuum liquid injection machine for lithium ion battery and its lithium ion battery liquid injection header structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206003880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635933A (en) * | 2020-12-28 | 2021-04-09 | 成都市银隆新能源有限公司 | Battery sealing device |
-
2016
- 2016-07-22 CN CN201620779725.XU patent/CN206003880U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635933A (en) * | 2020-12-28 | 2021-04-09 | 成都市银隆新能源有限公司 | Battery sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116450 Dalian City, Dalian Province garden economic zone, the administrative office of the room A1-148 Patentee after: Dalian China Power Battery Co., Ltd. Address before: 116450 Dalian City, Dalian Province garden economic zone, the administrative office of the room A1-148 Patentee before: DALIAN BAK POWER BATTERY CO., LTD. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 116450 East Street, Rose Street, Garden Economic Zone, Liaoning, Dalian, China, No. 11 Patentee after: Dalian China Power Battery Co., Ltd. Address before: 116450 Dalian City, Dalian Province garden economic zone, the administrative office of the room A1-148 Patentee before: Dalian China Power Battery Co., Ltd. |