CN208256829U - A kind of stacked poly-lithium battery - Google Patents

Abstract

The utility model discloses a kind of stacked poly-lithium batteries, including shell, end cap and battery, wherein shell is flat side's shape open at one end, and buffer bar is equipped on outer casing inner wall, is equipped with battery in shell, the open end of shell is equipped with end cap, it is set on end cap there are two through-hole, the positive terminal and negative terminal of battery are each passed through through-hole, through-hole and positive terminal and cathode intercolumniation equipped with insulating trip, buffer bar is equipped on the inside of end cap, buffer bar is contacted with battery.Stacked poly-lithium battery provided by the utility model, end cap and outer casing inner wall set buffer bar, have buffer function to battery, and the insulation performance that insulating trip improves battery is equipped between positive terminal and negative terminal and through-hole.

Description

A kind of stacked poly-lithium battery

Technical field

The utility model relates to technical field of lithium batteries more particularly to a kind of stacked poly-lithium batteries.

Background technique

The difference of the electrolyte according to used in lithium ion battery, lithium ion battery are divided into liquid lithium ionic cell and polymerization Object lithium ion battery or plastic lithium-ion battery, each lithium ion battery working principle is almost the same, their main distinction is The difference of electrolyte, liquid lithium ionic cell use liquid electrolyte, and polymer Li-ion battery is then with solid polymer electrolytic Matter replaces, and this polymer can be " dry state ", is also possible to " colloidal state ", most of at present to use polymer gel Electrolyte.

Current existing poly-lithium battery structural insulation effect is general, and service life is not grown, and security performance is poor, installation Shaking may be generated in battery case due to battery afterwards, great impact force can be generated when shaking violent, may cause The breakage of battery, causes battery to be scrapped.

Summary of the invention

In order to solve the above technical problems, the utility model provides a kind of stacked poly-lithium battery.

A kind of stacked poly-lithium battery, including shell, end cap and battery, wherein the shell is open at one end Flat side's shape is equipped with buffer bar on the outer casing inner wall, is equipped with the battery, the open end of the shell in the shell Equipped with the end cap, set on the end cap there are two through-hole, the positive terminal and negative terminal of the battery are each passed through described logical Hole, the through-hole and the positive terminal and the cathode intercolumniation are equipped with insulating trip, and the insulating trip is bonded in the through-hole, institute It states and is equipped with the buffer bar on the inside of end cap, the buffer bar is contacted with the battery；

The battery includes the anode, insulation diaphragm and cathode set gradually, between the anode and the insulation diaphragm Equipped with electrolyte, the electrolyte, the just extremely lithium cobaltate cathode, the cobalt are equipped between the insulation diaphragm and the cathode The surface of sour lithium anode is coated with graphene layer, and the cathode includes copper foil, and the surface of the copper foil is coated with lithium metal layer, institute It states positive terminal to be electrically connected with the anode, the negative terminal is electrically connected with the cathode.

Above technical scheme is preferred, and the through hole is respectively equipped with first boss and second boss, the first boss It is less than the positive terminal with the height of the second boss and the negative terminal stretches out the height of the end cap, the first boss Be threaded with the first protection cap and the second protection cap in the second boss respectively, first protection cap cover it is described just Pole, second protection cap cover the negative terminal.

Above technical scheme is preferred, and the electrolyte is gel polymer electrolyte.

Above technical scheme is preferred, and the buffer bar is polyvinyl chloride, and shape is strip.

Above technical scheme is preferred, and the shell includes the nylon layer set gradually from inside and outside, aluminium foil layer and poly- third Alkene layer, the nylon layer with a thickness of 30um, the aluminium foil layer with a thickness of 0.4mm, the polypropylene layer with a thickness of 50um.

Above technical scheme is preferred, and the insulating trip is polycarbonate insulating trip.

Above technical scheme is preferred, and the insulation diaphragm is polypropylene film.

The utility model has the advantages and positive effects of: stacked poly-lithium battery provided by the utility model, End cap and outer casing inner wall set buffer bar, have buffer function to battery, insulating trip is equipped between positive terminal and negative terminal and through-hole Improve the insulation performance of battery；Lithium metal layer is coated with as cathode outside copper foil, substantially increases capacity of negative plates, ordinary graphite Capacity density is 350 mAh/g, and lithium metal capacity density is 3861 mAh/g, almost the ten of graphite times, is applied to lithium battery Cathode, it is 1.5 times of ordinary graphite negative pole lithium battery that battery capacity density, which reaches 800Wh/L,；Graphene has the ratio of superelevation Surface and superpower electric conductivity, resistivity is small, good conductivity, and anode is outer to be coated with graphene layer, reduces the internal resistance of cell；At end cap Equipped with the first protection cap and the second protection cap, effective protection positive terminal and negative terminal are not damaged.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of an embodiment of the present invention；

Fig. 2 is the structural schematic diagram of the battery of an embodiment of the present invention；

Fig. 3 is the top view of an embodiment of the present invention；

Fig. 4 is the structural schematic diagram of the shell of an embodiment of the present invention.

Wherein: 1. shells, 2. end caps, 3. batteries, 4. buffer bars, 5. insulating trips, 6. first protection caps, 7. Two protection caps, 11. nylon layers, 12. aluminium foil layers, 13. polypropylene layers, 21. through-holes, 22. first boss, 23. second is convex Platform, 31. positive terminals, 32. negative terminals, 33. anodes, 34. insulation diaphragms, 35. cathode, 36. electrolyte, 331. cobalt acid lithiums Anode, 332. graphene layers, 351. copper foils, 352. lithium metal layers.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For to the utility model system.In addition, term " first ", " second " etc. are used for description purposes only, and it should not be understood as instruction or dark Show relative importance or implicitly indicates the quantity of indicated technical characteristic.The spy of " first ", " second " etc. is defined as a result, Sign can explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise saying Bright, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

A kind of stacked poly-lithium battery, as shown in Figure 1, wherein shell 1 is including shell 1, end cap 2 and battery 3 Flat side's shape open at one end is equipped with buffer bar 4 on outer casing inner wall, is equipped with battery 3 in shell, the open end of shell 1 is set There is end cap 2, there are two through-holes 21 as shown in figure 3, setting on end cap 2, and positive terminal 31 and the negative terminal 32 of battery 3 are each passed through logical Hole 21, through-hole 21 and positive terminal and cathode intercolumniation are equipped with insulating trip 5, and insulating trip is bonded in through-hole, and buffering is equipped on the inside of end cap 2 Item 4, buffer bar 4 are contacted with battery 3；

As shown in Fig. 2, battery 3 includes anode 33, insulation diaphragm 34 and the cathode 35 set gradually, anode 33 and insulation It is equipped with electrolyte 36 between diaphragm, electrolyte is equipped between insulation diaphragm and cathode, anode 33 is lithium cobaltate cathode 331, and cobalt acid lithium is just The surface of pole is coated with graphene layer 332, and cathode 35 includes copper foil 351, and the surface of copper foil is coated with lithium metal layer 352, anode Column 31 is electrically connected with anode 33, and negative terminal 32 is electrically connected with cathode 35.

First boss 22 and second boss 23 are respectively equipped at through-hole 21, first boss 22 and the height of second boss 23 are small The height of end cap 2 is stretched out in positive terminal and negative terminal, is threaded with the first protection cap 6 respectively in first boss and second boss With the second protection cap 7, the first protection cap covers positive terminal, and the second protection cap covers negative terminal.

Electrolyte 36 is gel polymer electrolyte.Buffer bar 4 is polyvinyl chloride, and shape is strip.Such as Fig. 4 institute Show, shell 1 includes nylon layer 11, aluminium foil layer 12 and the polypropylene layer 13 set gradually from inside and outside.Nylon layer is protective layer, Buddhist nun Imperial layer with a thickness of 30um；Aluminium foil layer is conventional battery case, adds nylon layer in conventional battery case, adds outside poly- Propylene layer, aluminium foil layer with a thickness of 0.4mm, polypropylene layer is hot sealing layer, polypropylene layer with a thickness of 50um.Insulating trip 5 is poly- Carbonic ester insulating trip.Insulation diaphragm 34 is polypropylene film.

Stacked poly-lithium battery provided by the utility model, end cap and outer casing inner wall set buffer bar, have to battery There is buffer function, the insulation performance that insulating trip improves battery is equipped between positive terminal and negative terminal and through-hole；Lithium is coated with outside copper foil Metal layer substantially increases capacity of negative plates, the capacity density of ordinary graphite is 350 mAh/g, and lithium metal capacity is close as cathode Degree is 3861 mAh/g, almost the ten of graphite times, and applied to the cathode of lithium battery, battery capacity density reaches 800Wh/L, is 1.5 times of ordinary graphite negative pole lithium battery；Graphene has the specific surface and superpower electric conductivity of superelevation, and resistivity is small, conductive Property it is good, anode is outer to be coated with graphene layer, reduces the internal resistance of cell；The first protection cap and the second protection cap are equipped at end cap, effectively Protect positive terminal and negative terminal not damaged.

One embodiment of the utility model is described in detail above, but the content is only the utility model Preferred embodiment should not be considered as limiting the scope of the present invention.It is all to be made according to application scope of the utility model All the changes and improvements etc., should still belong within the patent covering scope of the utility model.

Claims (7)

1. a kind of stacked poly-lithium battery, it is characterised in that: including shell, end cap and battery, wherein the shell is Flat side's shape open at one end is equipped with buffer bar on the outer casing inner wall, and the battery is equipped in the shell, described outer The open end of shell is equipped with the end cap, is set on the end cap there are two through-hole, the positive terminal and negative terminal of the battery are distinguished Across the through-hole, the through-hole and the positive terminal and the cathode intercolumniation are equipped with insulating trip, and the insulating trip is bonded in institute It states in through-hole, the buffer bar is equipped on the inside of the end cap, the buffer bar is contacted with the battery；

The battery includes the anode, insulation diaphragm and cathode set gradually, is equipped between the anode and the insulation diaphragm Electrolyte is equipped with the electrolyte, the just extremely lithium cobaltate cathode, the cobalt acid lithium between the insulation diaphragm and the cathode The surface of anode is coated with graphene layer, and the cathode includes copper foil, and the surface of the copper foil is coated with lithium metal layer, it is described just Pole is electrically connected with the anode, and the negative terminal is electrically connected with the cathode.

2. stacked poly-lithium battery according to claim 1, it is characterised in that: the through hole is respectively equipped with first The height of boss and second boss, the first boss and the second boss is less than the positive terminal and the negative terminal stretches out The first protection cap and the second protection are threaded in the height of the end cap, the first boss and the second boss respectively Lid, first protection cap cover the positive terminal, and second protection cap covers the negative terminal.

3. stacked poly-lithium battery according to claim 1, it is characterised in that: the electrolyte is gel state polymerization Object electrolyte.

4. stacked poly-lithium battery according to claim 1, it is characterised in that: the buffer bar is polyvinyl chloride, Shape is strip.

5. stacked poly-lithium battery according to claim 1, it is characterised in that: the shell include from inside and outside according to Nylon layer, aluminium foil layer and the polypropylene layer of secondary setting, the nylon layer with a thickness of 30um, the aluminium foil layer with a thickness of 0.4mm, the polypropylene layer with a thickness of 50um.

6. stacked poly-lithium battery according to claim 1, it is characterised in that: the insulating trip is that polycarbonate is exhausted Embolium.

7. stacked poly-lithium battery according to claim 1, it is characterised in that: the insulation diaphragm is that polypropylene is thin Film.