CN201717321U - High-capacity button lithium battery - Google Patents
High-capacity button lithium battery Download PDFInfo
- Publication number
- CN201717321U CN201717321U CN 200920289265 CN200920289265U CN201717321U CN 201717321 U CN201717321 U CN 201717321U CN 200920289265 CN200920289265 CN 200920289265 CN 200920289265 U CN200920289265 U CN 200920289265U CN 201717321 U CN201717321 U CN 201717321U
- Authority
- CN
- China
- Prior art keywords
- positive electrode
- ring
- lithium battery
- cover
- side wall
- 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.)
- Expired - Fee Related
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- Y02E60/12—
Abstract
The utility model discloses a high-capacity button lithium battery, which comprises a positive electrode shell and a negative electrode cover in sealing connection with the positive electrode shell. A positive electrode material, a negative electrode material and electrolyte are arranged inside a cavity between the positive electrode shell and the negative electrode cover; a current collector ring is arranged between the positive electrode shell and the positive electrode material; and a gap is arranged between the current collector ring and the lateral wall of the positive electrode shell. After the current collector ring is overlapped between the positive electrode shell and the positive electrode material, contact resistance between the positive electrode material and the positive electrode shell is decreased. Simultaneously, the gap enclosed by the current collector ring and the inner wall of an outer casing of the battery can store sufficient electrolyte, thereby discharging capacity of the battery is improved, and the service life of the battery is prolonged.
Description
Technical field
The utility model belongs to the high power capacity lithium battery, is specifically related to a kind of high power capacity button lithium battery.
Background technology
It is little that li-Mn button cell has a volume, cell voltage height, and discharging voltage balance, and operating temperature range wide (20 ℃～60 ℃), characteristics such as storage life is long are widely used in computer main board, calculator, electronic watch, remote controller, electronic toy and ornaments etc.The present bigger li-Mn button cell (as CR2450, CR2477 etc.) of overall dimensions, its structure as shown in Figure 1, comprise anode cover 1, be connected the negative cover 2 that seals with anode cover, be provided with positive electrode 3, negative material 4 and electrolyte in the cavity between anode cover and the negative cover, since positive electrode Electolyte-absorptive scarce capacity and behind the conventional structure battery seal free electrolyte amount less, make battery discharge or when using especially the middle and later periods battery become that the required electrolyte supply of stream reaction is not gone up, the battery polarization increase; Because negative pole consumes gradually, the thickness attenuation, and anodal lateral expansion increases anodal contact resistance with battery case in addition, finally causes the cell load performance to descend rapidly, capacity is on the low side, shorten useful life.
Summary of the invention
The purpose of this utility model is to provide a kind of high power capacity button lithium battery of new construction, with raising battery discharge ability, thereby addresses the above problem.
The technical solution of the utility model is: the high power capacity button lithium battery, it comprises anode cover, is connected the negative cover of sealing with anode cover, be provided with positive electrode, negative material and electrolyte in the cavity between anode cover and the negative cover, be provided with collecting ring between described anode cover and the positive electrode, gapped between collecting ring and the anode cover sidewall.
Described collecting ring comprises bottom panel, and bottom panel is provided with side wall ring.
Described side wall ring top is provided with the water jacket ring wall, constitutes electrolytic bath between side wall ring and the water jacket ring wall.
On the side wall ring of described collecting ring or side wall ring bottom is provided with electrolysis fluid passage discharge orifice.
Described positive electrode is column type or frustum type.
The utility model has reduced the contact resistance of positive electrode and anode cover behind stack collecting ring between anode cover and the positive electrode, the gap that while collecting ring and battery case inwall surround can store the electrolyte of capacity; Thereby improve discharge capacity of the cell, prolong battery useful life.
Description of drawings
The structural representation of the existing high power capacity button lithium battery of Fig. 1.
The structural representation of Fig. 2 the utility model high power capacity button lithium battery.
Fig. 3 the utility model high power capacity button lithium battery collecting ring schematic diagram.
Embodiment
As shown in Figure 2, in the high-capacity battery structure, comprise that the negative cover 5 that contains the insulated enclosure circle is connected sealing with anode cover 6; Positive electrode 7, negative material 8 are set in the cavity between negative cover 5 and the anode cover 6, between positive electrode 7 and the negative material 8 barrier film are arranged.Be provided with collecting ring 9 between anode cover 6 and positive electrode 7, collecting ring 9 uses stainless steel or stainless iron material to make.Collecting ring 9 comprises bottom panel 9.1, and bottom panel 9.1 is provided with side wall ring 9.2, and side wall ring 9.2 tops are provided with water jacket ring wall 9.3, constitutes electrolytic bath 9.4 between side wall ring 9.2 and the water jacket ring wall 9.3.The side wall ring bottom of collecting ring is provided with electrolysis fluid passage discharge orifice 9.5.Electrolysis fluid passage discharge orifice 9.5 is set to a plurality of, and electrolysis fluid passage discharge orifice 9.5 is located at collecting ring 9 bottom circular arcs in the present embodiment, and electrolysis fluid passage discharge orifice is symmetrical arranged and is 2-8 (as shown in Figure 3).Positive electrode 7 is a frustum type in the present embodiment.Collecting ring 9 is bowl-shape.
Owing to increase collecting ring 9, positive electrode thickness must reduce when making design, in order to keep positive electrode weight and to cooperate negative cover, collecting ring size, the positive electrode external form is changed into taper type, the assembling lateral clearance of positive electrode and collecting ring 9, negative cover 5 is dwindled, limited the lateral expansion of positive electrode in the battery discharge procedure; Behind the anode cover 6 stack collecting rings 9, reduced the contact resistance of anode cover and positive electrode, and the gap that collecting ring 9 and anode cover inwall surround can store the free electrolyte of capacity, has remedied conventional structure battery free electrolyte defect of insufficient; Therefore significantly improve the load performance of battery, effectively improved discharge capacity of the cell.
Claims (4)
1. high power capacity button lithium battery, it comprises anode cover, is connected the negative cover of sealing with anode cover, be provided with positive electrode, negative material and electrolyte in the cavity between anode cover and the negative cover, it is characterized in that being provided with collecting ring between described anode cover and the positive electrode, gapped between collecting ring and the anode cover sidewall; Described collecting ring comprises bottom panel, and bottom panel is provided with side wall ring.
2. high power capacity button lithium battery according to claim 1 is characterized in that described side wall ring top is provided with the water jacket ring wall, constitutes electrolytic bath between side wall ring and the water jacket ring wall.
3. high power capacity button lithium battery as claimed in claim 1 or 2 is characterized in that on the side wall ring of collecting ring or the side wall ring bottom is provided with electrolysis fluid passage discharge orifice.
4. high power capacity button lithium battery according to claim 1 is characterized in that positive electrode is column type or frustum type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920289265 CN201717321U (en) | 2009-12-15 | 2009-12-15 | High-capacity button lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920289265 CN201717321U (en) | 2009-12-15 | 2009-12-15 | High-capacity button lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717321U true CN201717321U (en) | 2011-01-19 |
Family
ID=43463327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920289265 Expired - Fee Related CN201717321U (en) | 2009-12-15 | 2009-12-15 | High-capacity button lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201717321U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000303A1 (en) * | 2010-07-02 | 2012-01-05 | 博特科科技(深圳)有限公司 | Button lithium battery and preparing method thereof |
| CN108023056A (en) * | 2016-11-03 | 2018-05-11 | 罗伯特·博世有限公司 | Battery list pond |
| CN109193023A (en) * | 2018-09-18 | 2019-01-11 | 朱程显 | With lateral opening and convex surface steel loop lithium coin cells |
| CN111919308A (en) * | 2018-04-06 | 2020-11-10 | 三洋电机株式会社 | Battery with a battery cell |
| EP3809484A4 (en) * | 2018-06-15 | 2021-07-28 | Yichang Power Glory Technology Co., Ltd. | Button battery and preparation method therefor |
| CN114639901A (en) * | 2020-12-15 | 2022-06-17 | 雷纳塔股份公司 | Holder for button cell electrode and cell provided with such a holder |
-
2009
- 2009-12-15 CN CN 200920289265 patent/CN201717321U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000303A1 (en) * | 2010-07-02 | 2012-01-05 | 博特科科技(深圳)有限公司 | Button lithium battery and preparing method thereof |
| CN102315480A (en) * | 2010-07-02 | 2012-01-11 | 博特科科技(深圳)有限公司 | Button lithium cell and preparation method thereof |
| CN108023056A (en) * | 2016-11-03 | 2018-05-11 | 罗伯特·博世有限公司 | Battery list pond |
| CN111919308A (en) * | 2018-04-06 | 2020-11-10 | 三洋电机株式会社 | Battery with a battery cell |
| EP3809484A4 (en) * | 2018-06-15 | 2021-07-28 | Yichang Power Glory Technology Co., Ltd. | Button battery and preparation method therefor |
| CN109193023A (en) * | 2018-09-18 | 2019-01-11 | 朱程显 | With lateral opening and convex surface steel loop lithium coin cells |
| CN114639901A (en) * | 2020-12-15 | 2022-06-17 | 雷纳塔股份公司 | Holder for button cell electrode and cell provided with such a holder |
| EP4016707A1 (en) * | 2020-12-15 | 2022-06-22 | Renata AG | A holder for an electrode of a button battery and a battery provided therewith |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20141215 |
|
| EXPY | Termination of patent right or utility model |