TWI697145B - Soft pack lithium titanate battery safety device - Google Patents

Soft pack lithium titanate battery safety device Download PDF

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Publication number
TWI697145B
TWI697145B TW107123347A TW107123347A TWI697145B TW I697145 B TWI697145 B TW I697145B TW 107123347 A TW107123347 A TW 107123347A TW 107123347 A TW107123347 A TW 107123347A TW I697145 B TWI697145 B TW I697145B
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lithium titanate
titanate battery
soft
plug
air inlet
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TW107123347A
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TW202007000A (en
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王東
趙長亮
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力歐新能源股份有限公司
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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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

軟包鈦酸鋰電池安全裝置，包括有一閥體和一閥芯，該閥體包括有一內筒形殼體及一外筒形殼體，該內筒形殼體的前端具有設有一排氣口的一前端蓋，並固定連接有一寶塔節式排氣管，該外筒形殼體的後端具有設有一進氣口的一後端蓋，並固定連接有一進氣管，該進氣管外部的兩側分別具有一翼狀連接部，該閥芯包括有一堵頭和一彈簧，該堵頭的兩端分別具有一錐狀塞柱和一柱狀連接座，該錐狀塞柱穿過該進氣口塞入該進氣管內，該彈簧的一端套裝在該柱狀連接座上，該彈簧的另一端頂靠在該前端蓋的內側。本發明能夠自動對使用後期的軟包鈦酸鋰電池進行排氣，有效消除了因脹氣所造成的安全隱患，解決了軟包鈦酸鋰電池使用後期脹氣的問題，有效提升了軟包鈦酸鋰電池的性能及使用壽命。 The safety device for a soft-packed lithium titanate battery includes a valve body and a valve core. The valve body includes an inner cylindrical casing and an outer cylindrical casing. The front end of the inner cylindrical casing is provided with an exhaust port A front end cover, and a pagoda section exhaust pipe is fixedly connected, and a rear end cover with an air inlet is provided at the rear end of the outer cylindrical shell, and an air inlet pipe is fixedly connected to the outside of the air inlet pipe The two sides of each have a wing-shaped connecting portion, the valve core includes a plug and a spring, the plug has a tapered plug post and a cylindrical connecting seat at both ends, the tapered plug post passes through the inlet The air port is plugged into the air inlet pipe, one end of the spring is sleeved on the column-shaped connecting seat, and the other end of the spring abuts against the inside of the front end cover. The invention can automatically exhaust the soft-packed lithium titanate battery in the later period of use, effectively eliminate the hidden safety hazards caused by flatulence, solve the problem of flatulence in the soft-packed lithium titanate battery at the later stage of use, and effectively improve the soft-packed titanate Lithium battery performance and service life.

Description

軟包鈦酸鋰電池安全裝置 Soft pack lithium titanate battery safety device

本發明係有關於動力鋰離子電池領域，尤指一種軟包鈦酸鋰電池安全裝置。 The invention relates to the field of power lithium-ion batteries, in particular to a safety device for soft-packed lithium titanate batteries.

鋰離子電池由於具有比能量高、工作電壓高、迴圈壽命長、無記憶效應及污染少等優點，現已廣泛應用於行動電話、可攜式電腦、數位相機等通訊與數位產品中，近年來在電動工具、電動車、航太衛星、武器裝備以及各種儲能裝置等領域的應用開發也逐漸顯示出良好的前景。 Lithium-ion batteries have been widely used in communication and digital products such as mobile phones, portable computers, digital cameras, etc. due to their advantages of high specific energy, high operating voltage, long loop life, no memory effect, and little pollution. The application and development in the fields of power tools, electric vehicles, aerospace satellites, weaponry and various energy storage devices have also gradually shown good prospects.

目前已商品化的鋰離子電池負極材料大多是嵌鋰碳材料，由於嵌鋰後碳電極的電位與金屬鋰的電位很接近，當電池過充電時，碳電極表面易析出金屬鋰，它與電解液反應產生可燃性氣體混合物，因而給電池、特別是動力電池造成很大的安全隱患。因此，尋找比碳負極在稍正的電位下嵌入鋰、廉價易得、安全可靠的發明材料鈦酸鋰引起人們的廣泛注意。 At present, most of the anode materials of commercial lithium-ion batteries are lithium-intercalated carbon materials. Since the potential of the carbon electrode after lithium intercalation is very close to the potential of metallic lithium, when the battery is overcharged, metallic lithium easily precipitates on the surface of the carbon electrode, which is The liquid reaction generates a flammable gas mixture, which poses a great safety hazard to batteries, especially power batteries. Therefore, the search for lithium titanate, an invented material that is less expensive and easier to obtain, safer and more reliable than lithium carbon anode at a slightly positive potential, has attracted widespread attention.

然而，在電池開發中卻發現以鈦酸鋰為負極的動力鋰離子電池普遍存在脹氣問題，一是封閉在電池內部增加內壓直至外包裝破裂，甚至***，二是破壞電池正負極片及隔離膜的接觸距離，降低了電池迴圈壽命和安全性能，從而嚴重影響了電池性能的發揮。鈦酸鋰電池產業化最早的公司東芝在其發表的兩篇專利中均提到了鈦酸鋰電池存在脹氣問題，東芝提出了在電解質溶液中添加高沸點並易成膜的添加劑在負極表面開成鈍 化膜來改善脹氣方法；美國EnerDel公司在美國能源部2009年年度報告上也報導了鈦酸鋰電池存在脹氣問題，並報導採用改進電解質溶液組分來改善脹氣。 However, in the development of batteries, it has been found that power lithium-ion batteries with lithium titanate as the negative electrode generally have a problem of flatulence. First, they are enclosed inside the battery to increase the internal pressure until the outer packaging ruptures or even explodes. Second, the positive and negative electrodes of the battery and the isolation are destroyed. The contact distance of the membrane reduces the battery cycle life and safety performance, which seriously affects the performance of the battery. Toshiba, the earliest company in the industrialization of lithium titanate batteries, mentioned in two of its published patents that the lithium titanate battery has a flatulence problem. Toshiba proposed to add an additive with a high boiling point and easy film formation to the electrolyte solution to make the surface of the negative electrode blunt Membrane to improve flatulence method; EnerDel of the United States also reported that the lithium titanate battery has flattening problems in the 2009 annual report of the US Department of Energy, and reported that the use of improved electrolyte solution components to improve flatulence.

上述方法均有一定可取之處，但是上述方法中對添加劑的純度有較高的要求，極片摻雜會帶來能量密度降低以及分散不均勻的問題，不利於工業化生產。 The above methods have certain merits, but the above methods have higher requirements for the purity of additives. Doping of the pole pieces will bring about the problem of energy density reduction and uneven dispersion, which is not conducive to industrial production.

爰此，為有效解決上述之問題，本發明之主要目的在於使以鈦酸鋰為負極的動力軟包鋰離子電池能夠在儲能及動力領域得到實際應用，提供一種軟包鈦酸鋰電池安全裝置，能夠自動對使用後期的軟包鈦酸鋰電池進行排氣，以解決軟包鈦酸鋰電池使用後期脹氣的問題。 Therefore, in order to effectively solve the above problems, the main purpose of the present invention is to make the power soft lithium ion battery with lithium titanate as the negative electrode can be practically applied in the field of energy storage and power, and to provide a soft lithium titanate battery safety The device can automatically exhaust the soft-packed lithium titanate battery in the later period of use to solve the problem of flatulence in the later period of use of the soft-packed lithium titanate battery.

為達上述目的，本發明係提供一種軟包鈦酸鋰電池安全裝置，包括有一閥體和一閥芯，其特徵在於：所述閥體包括有相固定連接的一內筒形殼體及一外筒形殼體，所述內筒形殼體的前端具有一體連接的一前端蓋，所述前端蓋上設有一排氣口並固定連接有一寶塔節式排氣管，所述外筒形殼體的後端具有一體連接的一後端蓋，所述後端蓋上設有一進氣口並固定連接有一進氣管，所述進氣管外部的兩側分別具有一體連接的一翼狀連接部，所述閥芯包括有設置於所述閥體內部的一堵頭和一彈簧，所述堵頭的兩端分別具有一體連接的一錐狀塞柱和一柱狀連接座，所述錐狀塞柱穿過所述進氣口塞入所述進氣管內，所述彈簧的一端套裝在所述柱狀連接座上，彈簧的另一端頂靠在所述前端蓋的內側。 To achieve the above object, the present invention provides a soft-coated lithium titanate battery safety device, including a valve body and a valve core, characterized in that the valve body includes an inner cylindrical housing and a fixed connection An outer cylindrical shell, the front end of the inner cylindrical shell has an integrally connected front end cover, the front end cover is provided with an exhaust port and a pagoda section exhaust pipe is fixedly connected, and the outer cylindrical shell The rear end of the body has an integrally connected rear end cover, the rear end cover is provided with an air inlet and fixedly connected with an air inlet pipe, and two sides outside the air inlet pipe respectively have an integrally connected wing-shaped connecting portion , The valve core includes a plug and a spring arranged inside the valve body, and two ends of the plug respectively have a conical plug column and a cylindrical connecting seat integrally connected, the conical shape The plug post is inserted into the air intake pipe through the air inlet, one end of the spring is sleeved on the column-shaped connecting seat, and the other end of the spring abuts against the inside of the front end cover.

在一實施例，所述閥體採用PP或PE或PET等耐腐材料製作而 成。 In one embodiment, the valve body is made of anticorrosive materials such as PP, PE or PET. to make.

在一實施例，所述內筒形殼體的外壁上設有複數外螺紋，所述外筒形殼體的內壁上設有複數內螺紋，所述內、外筒形殼體通過螺紋配合相固定連接。 In one embodiment, the outer wall of the inner cylindrical shell is provided with a plurality of external threads, and the inner wall of the outer cylindrical shell is provided with a plurality of internal threads, and the inner and outer cylindrical shells are matched by threads Phase fixed connection.

在一實施例，所述倒寶塔節式排氣管的外部插裝有一排放管。 In one embodiment, an exhaust pipe is inserted outside the inverted pagoda section exhaust pipe.

在一實施例，所述進氣管嵌入軟包鈦酸鋰電池中，並通過其外部兩側的翼狀連接部焊接在軟包鈦酸鋰電池的上、下鋁塑膜之間。 In one embodiment, the air intake pipe is embedded in a soft-coated lithium titanate battery, and is welded between the upper and lower aluminum-plastic films of the soft-coated lithium titanate battery through wing-shaped connection portions on both sides of the outer side thereof.

透過本發明的結構設計，能夠自動對使用後期的軟包鈦酸鋰電池進行排氣，有效消除了使用後期的軟包鈦酸鋰電池產生脹氣所造成的安全隱患，解決了軟包鈦酸鋰電池使用後期脹氣的問題，有效提升了軟包鈦酸鋰電池的性能及使用壽命。 Through the structural design of the present invention, it is possible to automatically exhaust the soft-packed lithium titanate battery in the later period of use, which effectively eliminates the hidden safety problems caused by flatulence caused by the soft-packed lithium titanate battery in the later period of use, and solves the problem of the soft-packed lithium titanate battery. The problem of flatulence in the later stage of the pool effectively improves the performance and service life of the soft-pack lithium titanate battery.

90:閥體 90: valve body

91:閥芯 91: Spool

1:內筒形殼體 1: inner cylindrical shell

10:堵頭 10: plug

11:彈簧 11: Spring

12:塞柱 12: Plug

13:連接座 13: Connector

14:外螺紋 14: external thread

15:內螺紋 15: internal thread

2:外筒形殼體 2: outer cylindrical shell

3:前端蓋 3: front cover

4:排氣口 4: exhaust port

5:排氣管 5: Exhaust pipe

6:後端蓋 6: Rear cover

7:進氣口 7: Air inlet

8:進氣管 8: intake pipe

9:連接部 9: Connection

92:軟包鈦酸鋰電池 92: Soft pack lithium titanate battery

93:鋁塑膜 93: Aluminum plastic film

第1圖係為本發明結構分解圖；第2圖係為本發明內筒形殼體的立體結構圖；第3圖係為本發明內筒形殼體的主視圖；第4圖係為本發明外筒形殼體的立體結構圖；第5圖係為本發明外筒形殼體的主視圖；第6圖係為本發明堵頭的立體結構圖；第7圖係為本發明裝配圖。 Figure 1 is an exploded view of the structure of the present invention; Figure 2 is a perspective structural view of the inner cylindrical housing of the present invention; Figure 3 is a front view of the inner cylindrical housing of the present invention; Figure 4 is the present The perspective structural view of the outer cylindrical shell of the invention; FIG. 5 is a front view of the external cylindrical shell of the present invention; FIG. 6 is the perspective structural view of the plug of the present invention; FIG. 7 is the assembly drawing of the present invention .

本發明之上述目的及其結構與功能上的特性，將依據所附圖式之較佳實施例予以說明。 The above objects, structural and functional characteristics of the present invention will be described based on the preferred embodiments of the accompanying drawings.

請參閱第1至6圖，一種軟包鈦酸鋰電池安全裝置，包括有一閥體90和一閥芯91，該閥體90包括有相固定連接的一內筒形殼體1及一外筒形殼體2，該內筒形殼體1的前端具有一體連接的一前端蓋3，該前端蓋3上設有一排氣口4並固定連接有一寶塔節式排氣管5，該外筒形殼體2的後端具有一體連接的一後端蓋6，該後端蓋6上設有一進氣口7並固定連接有一進氣管8，該進氣管8外部的兩側分別具有一體連接的一翼狀連接部9，該閥芯91包括有設置於該閥體90內部的一堵頭10和一彈簧11，該堵頭10的兩端分別具有一體連接的一錐狀塞柱12和一柱狀連接座13，該錐狀塞柱12穿過該進氣口7塞入該進氣管8內，該彈簧11的一端套裝在該柱狀連接座13上，該彈簧11的另一端頂靠在該前端蓋3的內側。 Please refer to Figures 1 to 6, a soft-pack lithium titanate battery safety device, including a valve body 90 and a valve core 91, the valve body 90 includes an inner cylindrical housing 1 and an outer cylinder fixedly connected Shaped shell 2, the front end of the inner cylindrical shell 1 has an integrally connected front end cover 3, the front end cover 3 is provided with an exhaust port 4 and fixedly connected with a pagoda section exhaust pipe 5, the outer cylindrical shape The rear end of the housing 2 has an integrally connected rear end cover 6. The rear end cover 6 is provided with an air inlet 7 and fixedly connected with an air inlet pipe 8. The two sides outside the air inlet pipe 8 are integrally connected respectively A wing-shaped connecting portion 9, the spool 91 includes a plug 10 and a spring 11 disposed inside the valve body 90, and both ends of the plug 10 are integrally connected with a tapered plug post 12 and a A cylindrical connecting seat 13, the tapered plug 12 is inserted into the intake pipe 8 through the air inlet 7, one end of the spring 11 is sleeved on the cylindrical connecting seat 13, the other end of the spring 11 is on top Lean against the inside of the front end cover 3.

本發明中，該閥體90採用PP或PE或PET等耐腐材料製作而成。 In the present invention, the valve body 90 is made of anticorrosive materials such as PP, PE or PET.

該內筒形殼體1的外壁上設有複數外螺紋14，該外筒形殼體2的內壁上設有複數內螺紋15，所述內、外筒形殼體1、2通過所述外螺紋14與內螺紋15的螺紋配合相固定連接。 A plurality of external threads 14 are provided on the outer wall of the inner cylindrical housing 1, and a plurality of internal threads 15 are provided on the inner wall of the outer cylindrical housing 2. The inner and outer cylindrical housings 1 and 2 pass through The external thread 14 is fixedly connected with the internal thread 15 in a thread fit.

所述倒寶塔節式排氣管5的外部插裝有排放管。 An exhaust pipe is inserted outside the inverted pagoda section exhaust pipe 5.

續請一併參閱第1至7圖，軟包鈦酸鋰電池92在使用過程中，如果軟包鈦酸鋰電池92的內部發生脹氣，那麼，當該電池的內部氣壓大於20KPa時，在氣壓作用下，該彈簧11壓縮，該錐狀塞柱12從該進氣口7和該 進氣管8中脫離，該堵頭10打開，該進氣口7和該進氣管8與該排氣口4和該寶塔節式排氣管5導通，該電池內的氣體自動排出；當該電池的內部氣壓小於10KPa時，該彈簧11開始伸張並復位，該錐狀塞柱12重新塞入該進氣口7和該進氣管8中，該堵頭10堵住該進氣口7，完成自動排氣工作。 Please also refer to Figures 1 to 7 together. During the use of the soft-pack lithium titanate battery 92, if gas expansion occurs inside the soft-pack lithium titanate battery 92, then when the internal pressure of the battery is greater than 20KPa, the pressure Under the action, the spring 11 compresses, and the tapered plug 12 passes from the air inlet 7 and the When the intake pipe 8 is disengaged, the plug 10 is opened, the intake port 7 and the intake pipe 8 are connected to the exhaust port 4 and the pagoda section exhaust pipe 5, and the gas in the battery is automatically discharged; When the internal air pressure of the battery is less than 10KPa, the spring 11 starts to expand and reset, the tapered plug 12 is re-plugged into the air inlet 7 and the air inlet pipe 8, the plug 10 blocks the air inlet 7 , Complete the automatic exhaust work.

另外，當氣體排出時帶出少量積液腐蝕到該電池的外部，從而導致該電池發生短路，為了避免出現上述情況，在倒寶塔節式排氣管5的外部(即塔節處)插裝排放管，引出的排放管可以將氣體和積液排放到固定容器中，以進行酸性中和處理。 In addition, when the gas is discharged, a small amount of accumulated liquid is corroded to the outside of the battery, resulting in a short circuit of the battery. In order to avoid the above situation, it is inserted outside the inverted pagoda section exhaust pipe 5 (that is, at the tower section) Discharge pipe, the discharge pipe can discharge gas and liquid to a fixed container for acid neutralization treatment.

請參閱第7圖，該進氣管8嵌入軟包鈦酸鋰電池92中，並通過其外部兩側的翼狀連接部9焊接在軟包鈦酸鋰電池92的上、下鋁塑膜93之間。 Please refer to FIG. 7, the intake pipe 8 is embedded in the soft-packed lithium titanate battery 92, and is welded to the upper and lower aluminum plastic films 93 of the soft-packed lithium titanate battery 92 through the wing-shaped connection portions 9 on both sides of the outer side thereof. between.

以上已將本發明做一詳細說明，惟以上所述者，僅為本發明之一較佳實施例而已，當不能限定本發明實施之範圍，即凡依本發明申請範圍所作之均等變化與修飾等，皆應仍屬本發明之專利涵蓋範圍。 The present invention has been described in detail above, but the above is only one of the preferred embodiments of the present invention. When the scope of the present invention cannot be limited, that is, all changes and modifications made in accordance with the scope of the application of the present invention Etc., should still be covered by the patent of the present invention.

90:閥體 90: valve body

91:閥芯 91: Spool

1:內筒形殼體 1: inner cylindrical shell

10:堵頭 10: plug

11:彈簧 11: Spring

12:塞柱 12: Plug

13:連接座 13: Connector

14:外螺紋 14: external thread

15:內螺紋 15: internal thread

2:外筒形殼體 2: outer cylindrical shell

3:前端蓋 3: front cover

5:排氣管 5: Exhaust pipe

6:後端蓋 6: Rear cover

7:進氣口 7: Air inlet

8:進氣管 8: intake pipe

9:連接部 9: Connection

Claims (7)

一種軟包鈦酸鋰電池安全裝置，係包括：一閥體，該閥體具有相固定連接的一內筒形殼體及一外筒形殼體，所述內筒形殼體的前端具有一體連接的一前端蓋，所述前端蓋上設有一排氣口並固定連接有一寶塔節式排氣管，並該寶塔節式排氣管的外部插裝有一排放管，所述外筒形殼體的後端具有一體連接的一後端蓋，所述後端蓋上設有一進氣口並固定連接有一進氣管，所述寶塔節式進氣管外部的兩側分別具有一體連接的一連接部；一閥芯，該閥芯具有設置於所述閥體內部的一堵頭和一彈簧，所述堵頭的兩端分別具有一體連接的一塞柱和一連接座，所述塞柱穿過所述寶塔節式進氣口塞入所述進氣管內，所述彈簧的一端套裝在所述連接座上，彈簧的另一端頂靠在所述前端蓋的內側。 A soft pack lithium titanate battery safety device includes: a valve body with an inner cylindrical shell and an outer cylindrical shell fixedly connected, the front end of the inner cylindrical shell is integrated A front end cover is connected, the front end cover is provided with an exhaust port and a pagoda section exhaust pipe is fixedly connected, and an exhaust pipe is inserted outside the pagoda section exhaust pipe, and the outer cylindrical shell The rear end has an integrally connected rear end cover, the rear end cover is provided with an air inlet and fixedly connected with an air inlet pipe, and the two sides of the pagoda section air inlet pipe have an integrally connected one on each side Part; a spool, the spool has a plug and a spring provided inside the valve body, the plug has a plug and a connecting seat integrally connected at both ends of the plug, the plug passes through After being inserted into the intake pipe through the pagoda-shaped air inlet, one end of the spring is sleeved on the connecting seat, and the other end of the spring abuts against the inside of the front end cover. 如請求項1所述之軟包鈦酸鋰電池安全裝置，其中所述閥體採用PP或PE或PET耐腐材料製作而成。 The soft pack lithium titanate battery safety device according to claim 1, wherein the valve body is made of PP or PE or PET anticorrosive material. 如請求項1所述之軟包鈦酸鋰電池安全裝置，其中所述內筒形殼體的外壁上設有複數外螺紋，所述外筒形殼體的內壁上設有複數內螺紋，所述內、外筒形殼體通過螺紋配合相固定連接。 The soft pack lithium titanate battery safety device according to claim 1, wherein a plurality of external threads are provided on the outer wall of the inner cylindrical housing, and a plurality of internal threads are provided on the inner wall of the outer cylindrical housing, The inner and outer cylindrical shells are fixedly connected by screw fitting. 如請求項1所述之軟包鈦酸鋰電池安全裝置，其中所述連接部係呈翼狀。 The safety device for a soft-coated lithium titanate battery according to claim 1, wherein the connecting portion is wing-shaped. 如請求項4所述之軟包鈦酸鋰電池安全裝置，其中所述進氣管嵌入軟包鈦酸鋰電池中，並通過其外部兩側的翼狀連接部焊接在軟包鈦酸鋰電池的上、下鋁塑膜之間。 The soft pack lithium titanate battery safety device according to claim 4, wherein the intake pipe is embedded in the soft pack lithium titanate battery, and is welded to the soft pack lithium titanate battery through the wing-shaped connection parts on both sides of the outside thereof Between the upper and lower aluminum plastic films. 如請求項1所述之軟包鈦酸鋰電池安全裝置，其中所述塞柱係呈錐狀。 The soft pack lithium titanate battery safety device according to claim 1, wherein the plug column is tapered. 如請求項1所述之軟包鈦酸鋰電池安全裝置，其中所述連接座係呈柱狀。 The safety device for a soft-packed lithium titanate battery according to claim 1, wherein the connecting seat is columnar.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200983378Y (en) * 2006-12-15 2007-11-28 比亚迪股份有限公司 A secure valve
CN202042536U (en) * 2010-04-23 2011-11-16 比亚迪股份有限公司 Explosion-proof battery structure and power battery adopting same
CN106953120A (en) * 2017-03-03 2017-07-14 北京大学 A kind of anti-explosion lithium ion battery group
TWM575615U (en) * 2018-07-05 2019-03-11 力歐新能源股份有限公司 Safety device of soft package lithium titanate battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200983378Y (en) * 2006-12-15 2007-11-28 比亚迪股份有限公司 A secure valve
CN202042536U (en) * 2010-04-23 2011-11-16 比亚迪股份有限公司 Explosion-proof battery structure and power battery adopting same
CN106953120A (en) * 2017-03-03 2017-07-14 北京大学 A kind of anti-explosion lithium ion battery group
TWM575615U (en) * 2018-07-05 2019-03-11 力歐新能源股份有限公司 Safety device of soft package lithium titanate battery

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