CN115332602A - New energy accumulator - Google Patents

Abstract

The invention discloses a new energy accumulator, which comprises a positive electrode, a negative electrode and a plurality of solid electrolytes respectively arranged between the positive electrode and the negative electrode; the positive electrode material of the positive electrode, the solid electrolyte and the negative electrode material of the negative electrode are overlapped to form an energy storage section, the first bending part and the second bending part at one end of each energy storage section are bent, the first bending part and the second bending part at the other end of each energy storage section are reversely bent, so that the positive electrode conducting layers at one side of any two energy storage sections are mutually folded and contacted, the negative electrode conducting layers at one side of any two energy storage sections are mutually folded and contacted, a plurality of energy storage sections can be mutually overlapped, and the plurality of energy storage sections are in a parallel connection state.

Description

Translated fromChinese

新能源储能器New Energy Storage

技术领域technical field

本发明涉及一种储能器，尤其涉及一种新能源储能器。The invention relates to an energy storage device, in particular to a new energy storage device.

背景技术Background technique

锂离子电池是由多孔隔板分隔的正极和负极及作用离子导电基质的液体电解质所组成，在这些锂离子电池中，液体电解为可燃性的物质，而当该锂离子电池若发生短路时，容易在短路过程中会引起火灾，使用上具有一定安全性的隐忧；故后续越来越多人采用固态电解质取代传统液态电解质，做成固态电池，不仅可改善锂电池的安全性问题，同时也解决锂电池能量密度的需求。Lithium-ion batteries are composed of positive and negative electrodes separated by porous separators and liquid electrolytes that act as ion-conducting substrates. In these lithium-ion batteries, the liquid is electrolyzed into flammable substances, and when the lithium-ion battery is short-circuited, It is easy to cause fire in the short circuit process, and there is a certain safety concern in use; therefore, more and more people use solid electrolytes instead of traditional liquid electrolytes to make solid-state batteries, which can not only improve the safety of lithium batteries, but also Solve the demand for energy density of lithium batteries.

参阅图1，一般固态电池1其包含有多个电池芯11，以及分别设于任二电池芯11间的隔离膜12所堆叠而成；其中，该每一电池芯11具备有一固态电解质111，分别设于该固态电解质111两侧的正极片112、负极片113，而上述该正极片112一端凸伸有一正极连接端1121，另该负极片113上且相反于该正极连接端1121则凸伸一负极连接端1131，至于，该隔离膜12设于该每一正极片112与另一电池芯11的负极片113间；故制作时，依序所设定的容量，其必须一层一层的堆叠该电池芯11与该隔离膜12，造成生产效率降低，及生产成本的提高外，且在相互堆叠过程中，因每一该电池芯11与另一电池芯11间都须再堆叠该隔离膜12，进而增加厚度，同时堆叠后又需将该等正极连接端1121连接形成一正极输出，即将该等负极连接端1131连接形成一负极输出，将会造成整体体积增加、散热效果不佳的情形，有改善的空间。Referring to FIG. 1 , a general solid-state battery 1 comprises a plurality ofbattery cores 11 and a stack ofseparators 12 respectively arranged between any twobattery cores 11; wherein eachbattery core 11 has asolid electrolyte 111, Thepositive electrode sheet 112 and thenegative electrode sheet 113 respectively arranged on both sides of thesolid electrolyte 111, and the above-mentionedpositive electrode sheet 112 protrudes from one end with a positiveelectrode connection end 1121, and on thenegative electrode sheet 113 opposite to the positiveelectrode connection end 1121 protrudes a Negativeelectrode connecting terminal 1131, as for, this separatingfilm 12 is arranged between this everypositive electrode sheet 112 and thenegative electrode sheet 113 of anothercell 11; Therefore when making, the capacity that is set in sequence, it must be layer by layer Stacking thebattery core 11 and theseparator 12 causes a decrease in production efficiency and an increase in production cost, and in the process of stacking each other, because eachbattery core 11 and anotherbattery core 11 must be stacked with theseparator film 12, and then increase the thickness, and at the same time, after stacking, it is necessary to connect thepositive connection terminals 1121 to form a positive output, that is, to connect thenegative connection terminals 1131 to form a negative output, which will cause the overall volume to increase and the heat dissipation effect to be poor. situation, there is room for improvement.

发明内容Contents of the invention

因此，本发明的目的，是在提供一种新能源储能器，其能提高生产速度及降低生产成本的功效。Therefore, the object of the present invention is to provide a new energy accumulator, which can improve the production speed and reduce the production cost.

于是，本发明一种新能源储能器，其包含有一正极、一负极，以及多个分别设于该正极与负极间的固态电解质；其中，该正极、固态电解质、负极间形成有多个储能区段，即每一储能区段由该正极的正极材料、固态电解质、负极的负极材料相叠形成，同时该每一储能区段一端的该第一弯折部、第二弯折部呈现弯曲，同时该储能区段另一端的该第一弯折部、第二弯折部呈现反向弯折，而使位于任二储能区段一侧的正极导电层相互折叠接触、同时位于任二储能区段一侧的负极导电层相互折叠接触，将可使多个该储能区段相互叠层一起，并使该多个储能区段形成并联状态，能有提升生产效率及降低生产成本，同时采用堆叠大面积接触的并联的方式，也可以相对提高充电、放电的性能。Therefore, a new energy storage device of the present invention includes a positive electrode, a negative electrode, and a plurality of solid electrolytes respectively arranged between the positive electrode and the negative electrode; The energy section, that is, each energy storage section is formed by stacking the positive electrode material of the positive electrode, the solid electrolyte, and the negative electrode material of the negative electrode. At the same time, the first bending part and the second bending part at one end of each energy storage section part presents a bend, and at the same time, the first and second bends at the other end of the energy storage section present reverse bends, so that the positive conductive layers on one side of any two energy storage sections are folded and contact each other. At the same time, the negative electrode conductive layers located on one side of any two energy storage sections are folded and in contact with each other, so that multiple energy storage sections can be stacked together, and the multiple energy storage sections can form a parallel state, which can improve production efficiency and reduce production costs, and at the same time, the parallel connection method of stacking large-area contacts can also relatively improve the performance of charging and discharging.

附图说明Description of drawings

图1为现有技术的示意图分解图；Fig. 1 is a schematic exploded view of the prior art;

图2为本发明第一较佳实施例的分解示意图；Fig. 2 is the exploded schematic diagram of the first preferred embodiment of the present invention;

图3为本发明第一较佳实施例的示意图；Fig. 3 is the schematic diagram of the first preferred embodiment of the present invention;

图4为本发明第一较佳实施例的弯折示意图；Fig. 4 is a schematic diagram of bending of the first preferred embodiment of the present invention;

图5为本发明第一较佳实施例的弯折后示意图；Fig. 5 is a schematic diagram after bending of the first preferred embodiment of the present invention;

图6为本发明第二较佳实施例的分解示意图；6 is an exploded schematic view of a second preferred embodiment of the present invention;

图7为本发明第二较佳实施例的弯折示意图；Fig. 7 is a schematic diagram of bending of the second preferred embodiment of the present invention;

图8为本发明第二较佳实施例的弯折后示意图；Fig. 8 is a schematic diagram after bending of the second preferred embodiment of the present invention;

图9为本发明第三较佳实施例的分解示意图；Fig. 9 is an exploded schematic diagram of a third preferred embodiment of the present invention;

图10为本发明第三较佳实施例的弯折示意图。Fig. 10 is a schematic bending diagram of the third preferred embodiment of the present invention.

符号说明：Symbol Description:

[现有技术][current technology]

1：新能源储能器1: New energy storage device

11：电池芯11: battery cell

12：隔离膜12: isolation film

111：固态电解质111: solid electrolyte

112：正极片112: positive plate

113：负极片113: negative plate

1121：正极连接端1121: Positive terminal

1131：负极连接端1131: Negative terminal

[本发明][this invention]

3:新能源储能器3: New energy storage device

31:正极31: Positive pole

311:正极导电层311: Positive electrode conductive layer

312:正极材料312: Cathode material

3111:第一弯折部3111: the first bending part

32:负极32: negative pole

321:负极导电层321: Negative electrode conductive layer

322:负极材料:322: Anode material:

3211:第二弯折部3211: the second bending part

33:固态电解质33: Solid electrolyte

A:储能区段A: Energy storage section

34:隔离膜34: Isolation film

341:隔离层341: isolation layer

342:开孔342: opening

具体实施方式Detailed ways

有关本发明的上述及其他技术内容、特点与功效，在以下配合参考图式的较佳实施例的详细说明中，将可清楚地明白。The above and other technical content, features and effects of the present invention will be clearly understood in the following detailed description of preferred embodiments with reference to the drawings.

参阅图2、图3，本发明第一较佳实施例，其包含有一正极31、一负极32，以及多个分别设于该正极31与负极32间的固态电解质33；其中，该正极31具有一正极导电层311，一间隔设置于该正极导电层311上的正极材料312，而上述该正极导电层311上且位于该任二正极材料312间设置有一第一弯折部3111，而上述该正极导电层311可为具导电的金属(如铜箔)，而该正极材料312则可为磷酸铁锂，该正极材料312厚度可为10um至1mm间为最佳；另，该负极32具有一负极导电层321，及一间隔设置于该负极导电层321上的负极材料322，而上述该负极导电层321上且位于该任二负极材料322间设置有一与该第一弯折部3111相对设置的第二弯折部3211，该负极导电层321可为具导电的金属(如铜箔)，而该负极材料322可为锂金属，该负极材料322的厚度可为1nm～1mm间为最佳。Referring to Fig. 2 and Fig. 3, the first preferred embodiment of the present invention includes apositive electrode 31, anegative electrode 32, and a plurality ofsolid electrolytes 33 respectively arranged between thepositive electrode 31 and thenegative electrode 32; wherein, thepositive electrode 31 has A positive electrodeconductive layer 311, apositive electrode material 312 arranged at intervals on the positive electrodeconductive layer 311, and afirst bending portion 3111 is arranged on the positive electrodeconductive layer 311 and between any twopositive electrode materials 312, and the above-mentioned The positive electrodeconductive layer 311 can be a conductive metal (such as copper foil), and thepositive electrode material 312 can be lithium iron phosphate, and the thickness of thepositive electrode material 312 can be optimal between 10um and 1mm; in addition, thenegative electrode 32 has a Negative electrodeconductive layer 321, and anegative electrode material 322 arranged at intervals on the negative electrodeconductive layer 321, and on the above-mentioned negative electrodeconductive layer 321 and between any twonegative electrode materials 322, a Thesecond bending part 3211, the negative electrodeconductive layer 321 can be a conductive metal (such as copper foil), and thenegative electrode material 322 can be lithium metal, and the thickness of thenegative electrode material 322 can be between 1nm and 1mm. .

仍续上述，该固态电解质33分别设置于该正极材料312与该负极材料322间，该固态电解质33可为硫化物固态电解质(如Li₁₀GEP₂S₁₂)、氧化物固态电解质(如Li₇LAZr₂O₁₂)、碳化物固态电解质的其一，而该固态固态电解质厚度可为10um～2mm；配合参阅图4、图5，该正极材料312、该固态电解质33、该负极材料322相叠形成一储能区段A，且该每一储能区段A一端的该第一弯折部3111、第二弯折部3211呈现弯曲，同时该储能区段A另一端的该第一弯折部3111及第二弯折部3211为反向弯折，而使位于任二储能区段A一侧的正极导电层311相互折叠接触，同时位于任二储能区段A另一侧的负极导电层321相互折叠接触。Continuing from the above, thesolid electrolyte 33 is respectively disposed between thepositive electrode material 312 and thenegative electrode material 322, and thesolid electrolyte 33 can be a sulfide solid electrolyte (such as Li₁₀ GEP₂ S₁₂ ), an oxide solid electrolyte (such as Li₇ LAZr₂ O₁₂ ), one of carbide solid electrolytes, and the thickness of the solid solid electrolyte can be 10um-2mm; refer to Figure 4 and Figure 5, thepositive electrode material 312, thesolid electrolyte 33, and thenegative electrode material 322 are stacked An energy storage section A is formed, and thefirst bending part 3111 and thesecond bending part 3211 at one end of each energy storage section A are bent, and at the same time, the first bending part at the other end of the energy storage section A The foldedportion 3111 and thesecond bent portion 3211 are reversely bent, so that the positiveconductive layer 311 located on one side of any two energy storage sections A is folded and in contact with each other, while the positive electrodeconductive layer 311 located on the other side of any two energy storage sections A The negative electrodeconductive layers 321 are folded and in contact with each other.

参阅图4、图5，制造时，其可先依据制作出该正极31、该负极32后，再将该正极31、该负极32及该固态电解质33分别进行结合后，依照所需堆叠的电容量决定需采用多少数量的储能区段A进行弯折后，即可使任二储能区段A进行推叠，即可快速的制造出该新能源储能器3，因此相较现有技术采用一层一层逐渐堆叠黏合方式，而本发明则可通过整条事先进行黏合后，直接通过弯折即可使该储能区段A进行堆叠，能有效提升生产效率及降低生产成本，且每一堆叠中的该储能区段A的正极导电层311与正极导电层311间相互大面积连接，该负极导电层321与负极导电层321间相互大面积连接，其也有助于散热效果，再者，通过此堆叠方式能降低整体的体积，使该新能源储能器3在相同能量密度的情况下，能变的更轻更薄，或者在有限体积限制下，提高能量密度，同时本发明中的储能区段A与储能区段A间采用并联的方式，其也具有提高充电、放电的性能。Referring to Fig. 4 and Fig. 5, during manufacture, it can be based on making thepositive electrode 31 and thenegative electrode 32 first, and then combining thepositive electrode 31, thenegative electrode 32 and thesolid electrolyte 33 respectively, according to the required stacked electrodes. The capacity determines how many energy storage sections A need to be bent, then any two energy storage sections A can be pushed and stacked, and the newenergy storage device 3 can be manufactured quickly. Therefore, compared with the existing The technology adopts the method of gradually stacking and bonding layer by layer, while the present invention can stack the energy storage section A directly by bending after bonding the whole strip in advance, which can effectively improve production efficiency and reduce production cost. Moreover, the positive electrodeconductive layer 311 and the positive electrodeconductive layer 311 of the energy storage section A in each stack are connected to each other in a large area, and the negative electrodeconductive layer 321 and the negative electrodeconductive layer 321 are connected to each other in a large area, which also contributes to the heat dissipation effect Moreover, the overall volume can be reduced through this stacking method, so that thenew energy accumulator 3 can become lighter and thinner under the same energy density, or the energy density can be increased under the limited volume limit, and at the same time In the present invention, the energy storage section A is connected in parallel with the energy storage section A, which also has the performance of improving charging and discharging.

参阅图6、图7、图8，本发明新能源储能器的第二较佳实施例，仍包含有正极31、负极32及固态电解质33等结构，且上述构件、连接关系及欲达成的功效均与第一实施例相同在此不做详细描述，特别是，本实施例中，更包含有至少一设于该正极31与该负极32间的隔离膜34，或者也可如图9、图10设置有二隔离膜34，而本实施例以设置有一隔离膜34进行说明，而上述该隔离膜34具有一隔离层341，以及多个等距开设于该隔离层341上的开孔342，而上述该开孔342可供该固态电解质33穿设，配合参阅图8，该隔离层341更能将该正极导电层311与该负极导电层321阻隔，而该开孔342可供该固态电解质33穿设，故通过该隔离膜34的设计，使得弯折后，能有效避免该正极导电层311与该负极导电层321相互接触而产生短路的情形。Referring to Fig. 6, Fig. 7 and Fig. 8, the second preferred embodiment of the new energy storage device of the present invention still includes structures such aspositive electrode 31,negative electrode 32 andsolid electrolyte 33, and the above-mentioned components, connection relationship and desired The functions are the same as those of the first embodiment and will not be described in detail here. In particular, in this embodiment, at least oneseparator 34 disposed between thepositive electrode 31 and thenegative electrode 32 is included, or as shown in FIG. 9, Figure 10 is provided with twoisolating films 34, and the present embodiment is described by setting oneisolating film 34, and the above-mentionedisolating film 34 has anisolating layer 341, and a plurality ofopenings 342 equidistantly provided on theisolating layer 341 , and the above-mentionedopening 342 can be used for thesolid electrolyte 33 to pass through. With reference to FIG. Theelectrolyte 33 is pierced, so through the design of theisolation film 34 , after being bent, it can effectively avoid the situation that the positive electrodeconductive layer 311 and the negative electrodeconductive layer 321 contact each other and produce a short circuit.

归纳上述，本发明新能源储能器其通过该正极、固态电解质、负极间形成有多个储能区段，即每一储能区段由该正极的正极材料、固态电解质、负极的负极材料相叠形成，同时该每一储能区段一端的该第一弯折部、第二弯折部呈现弯曲，同时该储能区段另一端的该第一弯折部、第二弯折部呈现反向弯折，而使位于任二储能区段一侧的正极导电层相互折叠接触、同时位于任二储能区段一侧的负极导电层相互折叠接触，将可使多个该储能区段相互叠层一起，并使该多个储能区段形成并联状态，能有提升生产效率及降低生产成本，同时也能相对提高充电、放电的性能，故的确能达到本发明的目的。To sum up the above, the new energy accumulator of the present invention forms a plurality of energy storage sections through the positive electrode, the solid electrolyte, and the negative electrode, that is, each energy storage section is composed of the positive electrode material of the positive electrode, the solid electrolyte, and the negative electrode material of the negative electrode. The first bent part and the second bent part at one end of each energy storage section are bent, and the first bent part and the second bent part at the other end of the energy storage section Reverse bending is presented, and the positive conductive layers on one side of any two energy storage sections are folded and contacted with each other, while the negative conductive layers on one side of any two energy storage sections are folded and contacted with each other, which will enable multiple storage The energy storage sections are stacked together, and the multiple energy storage sections are formed into a parallel state, which can improve production efficiency and reduce production costs, and can also relatively improve the performance of charging and discharging, so the purpose of the present invention can indeed be achieved .

惟以上所述者，仅为说明本发明的较佳实施例而已，当不能以此限定本发明实施的范围，即大凡依本发明申请专利范围及发明说明书内容所作的简单的等效变化与修饰，皆应仍属本发明专利涵盖的范围内。But the above are only preferred embodiments for illustrating the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention , all should still belong to the scope covered by the patent of the present invention.

Claims (10)

1. A new energy accumulator is characterized by comprising:

the positive electrode is provided with a positive electrode conducting layer and a positive electrode material arranged on the positive electrode conducting layer at intervals, and a first bending part is arranged on the positive electrode conducting layer and positioned between any two positive electrode materials;

a negative electrode, which is provided with a negative electrode conducting layer and a negative electrode material arranged on the negative electrode conducting layer at intervals, wherein a second bending part arranged opposite to the first bending part is arranged on the negative electrode conducting layer and positioned between any two negative electrode materials; and

the positive material, the solid 24907 and the negative material are overlapped to form an energy storage region, the first bending part and the second bending part at one end of each energy storage region are bent, and the first bending part and the second bending part at the other end of each energy storage region are bent reversely, so that positive conducting layers positioned on one side of any two energy storage regions are mutually folded and contacted, and negative conducting layers positioned on the other side of any two energy storage regions are mutually folded and contacted.

2. The new energy storage device as claimed in claim 1, further comprising at least one isolation film disposed between the positive electrode and the negative electrode, wherein the isolation film has an isolation layer and a plurality of openings equidistantly formed on the isolation layer, the isolation layer can isolate the positive conductive layer from the negative conductive layer, and the openings can allow the solid electrolyte to pass through.

3. The new energy accumulator according to claim 1, wherein the thickness of the positive electrode material is 10um to 1mm.

4. The new energy accumulator according to claim 1, wherein the thickness of the negative electrode material is 1nm to 1mm.

5. The new energy accumulator according to claim 1, wherein the solid electrolyte has a thickness of 10um to 2mm.

6. The new energy accumulator according to claim 1, wherein the positive electrode material is lithium iron phosphate.

7. The new energy accumulator as claimed in claim 1, wherein the negative electrode material is lithium metal.

8. The new energy accumulator according to claim 1, wherein the solid electrolyte is one of a sulfide solid electrolyte, an oxide solid electrolyte, and a carbide solid electrolyte.

9. The new energy accumulator as claimed in claim 1, characterized in that the sulfide solid-state electrolyte is Li₁₀ GEP₂ S₁₂ 。

10. The new energy storage device according to claim 1, wherein the oxide solid state electrolyte is Li₇ LAZr₂ O₁₂ 。

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