High-power multi-tab pole-free water-based lithium battery

Abstract

The invention discloses a high-power multi-tab pole-free water-based lithium battery, which comprises an outer shell, a metal shell, a positive electrode, a negative electrode, a positive electrode interface and a negative electrode interface, the positive electrode and the negative electrode are welded on the shell, the positive electrode is connected with the positive electrode interface, and the negative electrode is connected with the negative electrode interface; the battery structure is changed into an integrated non-diaphragm arrangement, so that electrolyte, namely liquid, can be in indirect contact with the metal shell effectively, the heat dissipation efficiency can be effectively improved after the arrangement, and a further monitoring temperature generation zone can be easily monitored and analyzed; and a multi-tab effect can be formed by connecting the negative electrode with the shell, so that the assembly and arrangement mode is simpler.

Description

Technical Field

[0001] The invention relates to the technical field of lithium batteries, and more specifically to a high-power multi-electrode and non-polar column aqueous lithium battery. Background Art

[0002] Lithium battery is a kind of battery that uses lithium metal or lithium alloy as positive / negative electrode material and non-aqueous electrolyte solution. Lithium metal battery was first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, MS Whittingham proposed and began to study lithium-ion battery. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high requirements on the environment. With the development of science and technology, lithium batteries have become mainstream.

[0003] According to the packaging method, the current batteries are mainly divided into soft-pack batteries, square batteries, cylindrical batteries, etc. According to the electrolyte classification, they are roughly divided into liquid batteries and solid-state batteries;

[0004] Currently, the most commonly used batteries are ternary lithium and lithium iron phosphate batteries, both of which are liquid batteries. When currently used, the temperature conduction distribution in the battery pack is uneven, and the heat dissipation is not very targeted. Because of the current structural problems of the battery, the heat dissipation will cause excess heat dissipation and fail to achieve the ideal heat dissipation effect, resulting in low heat dissipation efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a high-power multi-electrode poleless aqueous lithium battery, which can provide a lithium battery with excellent heat dissipation performance and is easy to be separated from modularization.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A high-power multi-electrode poleless aqueous lithium battery, comprising an outer shell, a metal shell, a positive electrode and a negative electrode welded on the shell, a positive electrode interface, and a negative electrode interface, wherein the positive electrode is connected to the positive electrode interface, and the negative electrode is connected to the negative electrode interface;

[0007] The housing is provided with a receiving cavity, the receiving cavity is provided with an electrolyte, and the inner wall of the housing, the connection between the housing and the positive electrode, and the contact surface between the positive electrode and the negative electrode and the electrolyte are all provided with a diaphragm;

[0008] The positive electrode is at least partially inserted into the electrolyte;

[0009] The positive electrode is arranged at the opening of the shell, and the positive electrode interface and the negative electrode interface are both provided with an insulating plate, the insulating plate covers the positive electrode interface and the negative electrode interface on the side, and the part of the positive electrode located in the shell is provided with a diaphragm and completely covers the surface of the shell in contact with the electrolyte;

[0010] The negative electrode is arranged at the back of the shell;

[0011] The insulating plate is a multi-layer structure with two ends being transparent. The inner layer of the insulating plate is a ceramic plate, and a plastic sealing body which completely covers the ceramic plate is arranged on the outer side of the ceramic plate.

[0012] By changing the battery structure to an integrated non-diaphragm setting, the electrolyte, i.e., liquid, can be effectively allowed to indirectly contact the metal shell. This setting can very effectively improve the heat dissipation efficiency, and further monitoring of temperature zoning can also be easily monitored and analyzed. By connecting the negative electrode to the shell, a multi-pole ear effect can be formed, and the assembly arrangement is simpler.

[0013] The present invention is further configured as follows: the shell is an integrally formed integral shell, the outer shell is hot-melt sealed and connected to the plastic sealing body, the positive electrode interface is inserted into the insulating plate to form a side wrapping, and is hot-melt connected to the plastic sealing body, and the positive electrode at least partially extends out of the shell opening to form an angled positive electrode ear.

[0014] The provision of the angled pole ears enables better mutual connection, and the connection can also be formed by mutual welding between the pole ears, thereby forming a more stable electrical connection.

[0015] The present invention is further configured such that: the positive electrode is in a strip-shaped plate structure.

[0016] The use of a strip-shaped structure for the positive electrode can make subsequent series and parallel connections simpler and more reliable.

[0017] The present invention is further configured such that: the shell is provided with a negative electrode tab in a folded shape connected to the negative electrode.

[0018] The negative electrode tabs can be connected to each other or the positions where the negative electrode tabs can be connected can be expanded individually.

[0019] The present invention is further configured such that the positive electrode tab, the negative electrode tab and the outer side of the shell are all provided with an insulating coating.

[0020] The provision of the insulating coating can prevent the batteries from being connected in series due to contact with each other.

[0021] The above technical objectives of the present invention are achieved through the following technical solutions: A high-power multi-electrode poleless aqueous lithium battery, comprising an outer shell, a metal shell, a battery cell arranged in the shell, and a positive electrode and a negative electrode connected to the battery cell;

[0022] The shell is provided with a receiving cavity for receiving the battery core, and the battery core is a plurality of coils laid flat and stacked and arranged in the shell;

[0023] The positive electrode is embedded in the opening of the shell, and the part of the positive electrode extending into the shell is integrated with the positive electrode of the battery cell, the part of the negative electrode embedded in the shell is integrated with the negative electrode of the battery cell, an insulating plate is arranged between the positive electrode tab and the shell, and the contact surface between the negative electrode and the shell is welded;

[0024] The connection between the negative electrode and the shell is welded and sealed.

[0025] By arranging the battery cells in a flat pattern, the energy density can be increased while taking into account the heat dissipation performance. The setting of the shell can also solve the problem of thinning the square battery.

[0026] The present invention is further configured as follows: the insulating plate is a multi-layer structure with two ends being transparent, the inner layer of the insulating plate is a ceramic plate, and a plastic sealing body fully covering the ceramic plate is arranged on the outer side of the ceramic plate.

[0027] The ceramic plate is provided to prevent the insulating plate from being punctured by the charged shell and causing a short circuit.

[0028] The present invention is further configured as follows: the shell is an integrally formed integral shell, the outer shell is hot-melt sealed and connected to the insulating plate, the positive electrode arranged at the opening of the shell at least partially extends into the shell, and the positive electrode at least partially extends out of the opening of the shell to form an angled positive electrode ear.

[0029] The provision of the angled positive electrode tab can provide more and more reliable fixing methods. The present invention is further provided that: the housing is provided with an angled negative electrode tab connected to the negative electrode.

[0030] The setting of the angled negative electrode tab can provide more series and parallel connection possibilities.

[0031] In summary, the present invention has the following beneficial effects: by changing the battery structure to an integrated non-diaphragm setting, the electrolyte, i.e., the liquid, can be effectively allowed to indirectly contact the metal shell. This setting can very effectively improve the heat dissipation efficiency, and further monitoring of temperature zoning can also be easily monitored and analyzed. By connecting the negative electrode to the shell, a multi-pole ear effect can be formed, and the assembly arrangement method is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the appearance structure of a battery in an embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of the internal structure of a battery in an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the installation structure of the insulation board according to an embodiment of the present invention.

[0035] In the figure:

[0036] 1. Positive electrode; 2. Negative electrode; 3. Outer shell; 4. Insulating plate; 5. Battery cell; 6. Positive electrode ear; 7. Negative electrode ear; 11. Positive electrode interface; 21. Negative electrode interface. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that if the terms "first", "second", etc. are involved in the specification and claims of the present invention and the above-mentioned drawings, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] In addition, in the present invention, the terms "installed", "set", "provided with", "connected", "connected", "socketed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] The following is combined with Figure 1-2 The present invention is described in further detail.

[0042] In response to the existing situation of lithium batteries, most of the lithium iron phosphate batteries used today are wound single cells such as 18650 batteries to form battery packs. The heat inside them accumulates in a very unfavorable place for heat dissipation and heat monitoring. Among them, because there will be a lot of empty spaces in the middle of the round batteries when they are arranged, the temperature monitoring is uneven, and the energy density of the round batteries is also much smaller than that of the square batteries. The square batteries are the batteries with the highest energy density in theory and very good space utilization. The biggest problems of the square batteries are the difficulty in heat dissipation and side bulging. For heat dissipation, the square batteries mainly have the problem of uneven internal heat dissipation. However, when the square batteries are made too small, due to their hard shell, their energy density is low and the volume is too large to ensure heat dissipation.

[0043] Example 1

[0044] like Figure 1-Figure 3 As shown, a high-power multi-electrode tab-free aqueous lithium battery comprises an outer shell, a metal shell 3, a positive electrode 1 and a negative electrode 2 welded on the shell 3, a positive electrode interface 11, and a negative electrode interface 21. The shell 3 is provided with a receiving cavity, and an electrolyte is provided in the receiving cavity. The inner wall of the shell 3, the connection between the shell 3 and the positive electrode 1, and the contact surface between the positive electrode 1 and the negative electrode 2 and the electrolyte are all provided with a diaphragm; the positive electrode 1 is at least partially inserted into the electrolyte; the positive electrode 1 is provided at the opening of the shell 3, Insulating plates 4 are provided at the positive electrode interface 11 and the negative electrode interface 21, and the insulating plates 4 cover the positive electrode interface 11 and the negative electrode interface 21 on the side. The part of the positive electrode 1 located in the shell 3 is provided with a diaphragm and completely covers the surface of the shell 3 in contact with the electrolyte; the negative electrode 2 is arranged at the back of the shell 3; the insulating plate 4 has a multi-layer structure with both ends transparent, the inner layer of the insulating plate 4 is a ceramic plate, and a plastic sealing body that fully covers the ceramic plate is arranged on the outside of the ceramic plate.

[0045] By changing the battery structure to an integrated non-diaphragm setting, the electrolyte, i.e., liquid, can be effectively brought into indirect contact with the metal shell 3. This setting can effectively improve the heat dissipation efficiency, and further monitoring of temperature zoning can also be easily monitored and analyzed. By connecting the negative electrode 2 to the shell 3, a multi-pole ear effect can be formed, and the assembly arrangement method is simpler.

[0046] The shell 3 is an integrally formed integral shell, the outer shell is hot-melt sealed to the plastic sealing body, the positive electrode interface 11 is inserted into the insulating plate 4 to form a side wrapping, and is hot-melt connected to the plastic sealing body, and the positive electrode 1 at least partially extends out of the opening of the shell 3 to form an angled positive electrode ear 6; the setting of the angled ear can better connect with each other, and can also be connected by mutual welding between the ears, thereby forming a more stable electrical connection.

[0047] The positive electrode 1 has a strip-shaped plate structure; the use of a strip-shaped plate structure for the positive electrode 1 can facilitate subsequent series and parallel connection, making it simpler and more reliable.

[0048] The housing 3 is provided with an angled negative electrode tab 7 connected to the negative electrode 2 ; the two negative electrode tabs can be connected to each other or the positions where the two negative electrode tabs can be connected can be expanded separately.

[0049] The positive electrode 1 tab, the negative electrode 2 tab and the outer surface of the shell 3 are all provided with an insulating coating; the provision of the insulating coating can prevent the batteries from contacting each other and forming a series connection.

[0050] In this embodiment, the battery cells can be divided into single-chip cells with a height of 220 mm, a width of 500 mm, and a length of 2000 mm according to actual use, and then several single-chip cells are combined side by side into a battery module, which can be used in conjunction with existing battery management systems such as BMS to manage the battery status in real time and optimize the charging and discharging strategy according to its own capacity to improve safety.

[0051] In this embodiment, conventional components such as necessary safety auxiliary parts such as a pressure relief valve are arranged on the side of the battery.

[0052] In this solution, the battery cells can be directly integrated into the battery pack and arranged side by side to replace the battery module.

[0053] Example 2

[0054] like Figure 1-Figure 3 As shown, a high-power multi-electrode electrodeless aqueous lithium battery comprises an outer shell, a metal shell 3, a battery cell 5 disposed in the shell 3, and a positive electrode 1 and a negative electrode 2 connected to the battery cell 5;

[0055] The housing 3 is provided with a receiving cavity for receiving the battery cell 5. The battery cell 5 is a plurality of coils laid flat and stacked in the housing 3.

[0056] The positive electrode 1 is embedded in the opening of the shell 3, and the part of the positive electrode 1 extending into the shell 3 is integrated with the positive electrode of the battery cell 5, and the part of the negative electrode 2 embedded in the shell 3 is integrated with the negative electrode of the battery cell 5. An insulating plate 4 is provided between the positive electrode tab 6 and the shell 3, and the contact surface between the negative electrode 2 and the shell 3 is welded;

[0057] The connection between the negative electrode 2 and the shell 3 is welded and sealed; by arranging the battery cells 5 in a flat manner, the energy density can be improved while taking into account the heat dissipation performance, and the shell 3 can also solve the problem of thinning the square battery.

[0058] The insulating plate 4 is a multilayer structure with both ends transparent. The inner layer of the insulating plate 4 is a ceramic plate, and a plastic package that fully covers the ceramic plate is arranged on the outer side of the ceramic plate. The arrangement of the ceramic plate prevents the insulating plate 4 from being punctured by the charged shell 3 and causing a short circuit.

[0059] The shell 3 is an integrally formed integral shell, the outer shell is hot-melt sealed to the insulating plate 4, the positive electrode 1 arranged at the opening of the shell 3 at least partially extends into the shell 3, and the positive electrode 1 at least partially extends out of the opening of the shell 3 to form an angled positive electrode ear 6; the setting of the angled positive electrode ear 6 can provide more and more reliable fixing methods.

[0060] The housing 3 is provided with an angled negative electrode tab 7 connected to the negative electrode 2; the arrangement of the angled negative electrode tab can provide more series and parallel connection possibilities.

[0061] By changing the battery structure to an integrated non-diaphragm setting, the electrolyte, i.e., liquid, can be effectively brought into indirect contact with the metal shell 3. This setting can effectively improve the heat dissipation efficiency, and further monitoring of temperature zoning can also be easily monitored and analyzed. By connecting the negative electrode 2 to the shell 3, a multi-pole ear effect can be formed, and the assembly arrangement method is simpler.

[0062] In this embodiment, conventional components such as necessary safety auxiliary parts such as a pressure relief valve are arranged on the side of the battery.

[0063] In this embodiment, in order to achieve better compression resistance of the single cell, an anti-deformation structure such as a compression-resistant groove, an anti-deformation groove, an anti-deformation column, an anti-deformation column groove, etc. may be provided in the battery housing 3 .

[0064] Example 3

[0065] A battery pack composed of high-power multi-electrode and non-polar column aqueous lithium batteries includes a battery pack in which a plurality of batteries arranged in parallel and a cooling group for cooling the batteries are arranged.

[0066] The cooling group includes a plurality of copper tubes. A copper tube is arranged between every two batteries. The copper tube is in a flat and long strip structure. A receiving cavity is arranged inside the copper tube for passing the cooling medium.

[0067] The thickness of the copper tube is 2 mm, and its internal channel is at least 1 mm;

[0068] The height of the copper tube is flush with that of the battery and thermal conductive silicone grease is applied between the copper tube and the battery.

[0069] A plurality of copper tubes arranged between the batteries are interconnected to form an S-shaped cooling channel.

[0070] In this solution, in order to allow the cooling medium to flow evenly through each copper tube, adjacent copper tubes are connected at the top of the copper tubes through connecting tubes. Connecting tubes are provided at both ends of the copper tubes, and adjacent connecting tubes are cross-arranged at both ends of the copper tubes.

[0071] In this solution, in order to achieve faster temperature reduction, refrigerant, coolant or other cooling medium may be present in the copper tube.

[0072] In this solution, in order to reduce the vehicle's own weight, the copper tubes can be connected to the air-conditioning compressor through a three-way solenoid valve for cooling through the refrigerant. The refrigerant control system allows the air-conditioning compressor to compress the refrigerant so that the refrigerant passes through each copper tube evenly for cooling.

[0073] In this embodiment, in order to adapt to batteries with different shapes and structures, such as anti-compression grooves, anti-deformation columns, anti-deformation column grooves and other structures, the copper tube can be provided with corresponding grooves or convex column structures to always keep close to the side wall of the battery.

[0074] In this embodiment, in order to electrically connect the battery electrodes with the copper tubes, heat dissipation fins may be provided between the batteries, and the copper tubes pass through the heat dissipation fins to allow refrigerant to pass through, which can also increase the heat dissipation efficiency at the same time.

[0075] In this embodiment, in order to achieve a better insulation effect, materials such as diamond, aluminum nitride, silicon carbide, etc. may be added as heat sink fins to prevent electrical breakdown, or they may be in the form of isolation insulation.

[0076] Several cooling fins are arranged between the batteries to form several air ducts in the same direction. In order to increase the contact area of ​​the air ducts, the cooling fins are located on both sides of the vehicle body as air outlets and air inlets, and the copper tubes vertically penetrate all the cooling fins in the current gaps.

[0077] Example 4

[0078] A control method for controlling a battery pack composed of high-power multi-electrode and non-polar column aqueous lithium batteries.

[0079] S1. Get real-time temperature data in the battery pack: You can directly measure the temperature of the power lithium battery by sticking an NTC thermistor on the battery module cover, or you can set a temperature sensor in a dot matrix; the battery management system BMS processes the data sent back from the battery pack.

[0080] S2. Based on the big data standard warming trend model, prediction is made by comparing the standard warming trend model with various data obtained in real time.

[0081] According to the data obtained during normal use, the BMS uses sensors to detect the voltage, current, and temperature of the battery in real time, and performs leakage detection, thermal management, battery balancing management, alarm reminders, calculates the remaining capacity SOC, discharge power, reports the battery degradation degree SOH and remaining capacity SOC status and other data, obtains some normal data, and inputs the above normal data into the convolutional neural network for training to obtain a standard temperature rise trend model.

[0082] Among them, the abnormal trend in S2 is that the battery may heat up sharply to the decomposition temperature of the ion membrane, causing a short circuit. By establishing a standard model to compare the current parameters, trend prediction can be achieved;

[0083] BMS can coordinate cooling strategies based on trend prediction results made by the standard heating trend model.

[0084] Among them, the decomposition temperature of the ion membrane is 90° and above.

[0085] According to the cooling strategy of BMS, air cooling or refrigerant cooling is decided according to the situation.

[0086] In daily use,

[0087] When the BMS detects abnormal fluctuations in temperature data, it can control the three-way solenoid valve to connect to the air-conditioning compressor and use refrigerant cooling to lower the battery temperature.

[0088] When the battery heat is abnormal, connecting the refrigerant power to the maximum can effectively prevent fire and explosion incidents. If the temperature can be stably controlled below 90°, the short circuit situation will be greatly reduced.

[0089] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0090] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention description and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-power multi-electrode electrodeless aqueous lithium battery, comprising an outer shell, a metal shell (3), a positive electrode (1) and a negative electrode (2) welded to the shell (3), a positive electrode interface (11), and a negative electrode interface (21), wherein the positive electrode (1) is connected to the positive electrode interface (11), and the negative electrode (2) is connected to the negative electrode interface, characterized in that: The housing (3) is provided with a receiving cavity, an electrolyte is provided in the receiving cavity, and a diaphragm is provided on the inner wall of the housing (3), the connection between the housing (3) and the positive electrode (1), and the contact surface between the positive electrode (1) and the negative electrode (2) and the electrolyte; The positive electrode (1) is at least partially inserted into the electrolyte; The positive electrode (1) is arranged at the opening of the shell (3), and the positive electrode interface (11) and the negative electrode interface (21) are both provided with an insulating plate (4), the insulating plate (4) covers the positive electrode interface (11) and the negative electrode interface (21) on the side, and the part of the positive electrode (1) located in the shell (3) is provided with a diaphragm and completely covers the surface of the shell (3) in contact with the electrolyte; The negative electrode (2) is arranged at the back of the shell (3); The insulating plate (4) is a multi-layer structure with two ends being transparent, the inner layer of the insulating plate (4) being a ceramic plate, and a plastic sealing body which completely covers the ceramic plate is arranged on the outer side of the ceramic plate.

2. A high-power multi-electrode poleless aqueous lithium battery according to claim 1, characterized in that: The shell (3) is an integrally formed integral shell, the outer shell is connected to the plastic sealing body by heat-melt sealing, the positive electrode interface (11) is inserted into the insulating plate (4) to form a side wrapping, and is connected to the plastic sealing body by heat-melt sealing, and the positive electrode (1) at least partially extends out of the opening of the shell (3) to form a folded positive electrode ear (6).

3. A high-power multi-electrode poleless aqueous lithium battery according to claim 2, characterized in that: The positive electrode (1) is in a strip-shaped plate structure.

4. A high-power multi-electrode poleless aqueous lithium battery according to claim 2, characterized in that: The housing (3) is provided with a negative electrode tab (7) in a folded shape connected to the negative electrode (2).

5. A high-power multi-electrode poleless aqueous lithium battery according to claim 4, characterized in that: The positive electrode tab (6), the negative electrode tab (7) and the outer side of the shell (3) are all provided with an insulating coating.

6. A high-power multi-electrode poleless aqueous lithium battery, characterized in that: It comprises an outer shell, a shell (3) made of a metal material, a battery core (5) arranged in the shell (3), and a positive electrode (1) and a negative electrode (2) connected to the battery core (5); The housing (3) is provided with a housing cavity for accommodating a battery cell (5), and the battery cell (5) is a plurality of coils laid flat and stacked and arranged in the housing (3); The positive electrode (1) is embedded in the opening of the shell (3), and the part of the positive electrode (1) extending into the shell (3) is integrally connected with the positive electrode of the battery cell (5), the part of the negative electrode (2) embedded in the shell (3) is integrally connected with the negative electrode of the battery cell (5), an insulating plate (4) is arranged between the positive electrode tab (6) and the shell (3), and the contact surface between the negative electrode (2) and the shell (3) is welded; The connection between the negative electrode (2) and the shell (3) is welded and sealed.

7. A high-power multi-electrode poleless aqueous lithium battery according to claim 6, characterized in that: The insulating plate (4) is a multi-layer structure with both ends being transparent, the inner layer of the insulating plate (4) being a ceramic plate, and a plastic sealing body which completely covers the ceramic plate is arranged on the outer side of the ceramic plate.

8. A high-power multi-electrode poleless aqueous lithium battery according to claim 6, characterized in that: The shell (3) is an integrally formed whole shell, the outer shell is connected to the insulating plate (4) by hot-melt sealing, the positive electrode (1) arranged at the opening of the shell (3) at least partially extends into the shell (3), and the positive electrode (1) at least partially extends outside the opening of the shell (3) to form a folded-angle positive electrode ear (6).

9. A high-power multi-electrode poleless aqueous lithium battery according to claim 8, characterized in that: The housing (3) is provided with a negative electrode tab (7) in a folded shape connected to the negative electrode (2).

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