A single high-voltage battery and a pole core for a single high-voltage battery

Abstract

The application discloses a single high-voltage battery, which comprises a first pole core, a second pole core and a switching piece, a positive output end, a negative output end and a packaging shell. The first pole core and the second pole core respectively comprise a pole core body and a pole lug arranged on the pole core body. The first pole core is provided with a first pole lug and a third pole lug, and the second pole core is provided with a second pole lug and a fourth pole lug. The first pole lug is a negative pole of the first pole core, and the second pole lug is a positive pole of the second pole core. The third pole lug is a positive pole of the first pole core, and the fourth pole lug is a negative pole of the second pole core. The switching piece connects the first pole lug and the second pole lug and connects the first pole core and the second pole core in series. The third pole lug and the fourth pole lug are used as positive poles / negative poles of the single high-voltage battery. The first pole core and the second pole core are accommodated in the same packaging shell, and the packaging shell is filled with an electrolyte, which is in contact with the first pole core and the second pole core. The battery voltage is high, and the energy transmission efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of new energy lithium battery technology, specifically to a single high-voltage battery and an electrode core for a single high-voltage battery. Background Technology

[0002] The widespread adoption and diversification of electronic devices have spurred the development of battery technology, and the increasing power demands of high-performance electronic devices have placed higher requirements on the power supply capacity of batteries.

[0003] Traditional low-voltage batteries have weak power output capabilities, failing to meet the demands of current high-power devices. Furthermore, when the device power is fixed, low-voltage batteries require a larger output current to meet the device's needs, resulting in low energy transfer efficiency. Clearly, low-voltage batteries severely limit their application in electronic devices. For lithium batteries commonly found in the market, which use lithium cobalt oxide as the positive electrode and graphite as the negative electrode, increasing the battery voltage by modifying the positive and negative electrode materials is extremely difficult. Therefore, existing technology provides a method of connecting two individual batteries in series to form a high-voltage battery; however, this method leads to increased battery pack system integration costs and a significant reduction in space utilization.

[0004] Therefore, there is an urgent need to provide a high-voltage battery to solve the problems of high battery integration cost and low space utilization in existing technologies. Utility Model Content

[0005] This application provides a single-cell high-voltage battery and an electrode core for the single-cell high-voltage battery, which can effectively improve the output voltage of the single-cell battery, adapt to the high-voltage battery requirements of high-power electronic devices, and by using a soft-pack aluminum-plastic film encapsulation for the electrode core, it can be adapted to the battery placement space of electronic devices of various shapes. The specific solution is as follows: Firstly, this application provides a single-cell high-voltage battery. Includes a first electrode core, a second electrode core, an adapter plate, the positive output terminal of the single high-voltage battery cell, and the negative output terminal of the single high-voltage battery cell: The first electrode core and the second electrode core each include their own independent electrode core bodies and electrode tabs disposed on their respective electrode core bodies; wherein, the first electrode core is provided with a first electrode tab and the second electrode core is provided with a second electrode tab; the first electrode tab is the negative electrode of the first electrode core and the second electrode tab is the positive electrode of the second electrode core; The adapter piece is made of conductive material. The adapter piece connects the first electrode tab and the second electrode tab, and connects the first electrode core and the second electrode core in series. The first electrode core is further provided with a third electrode tab, and the second electrode core is provided with a fourth electrode tab; the third electrode tab is the positive electrode of the first electrode core, and the fourth electrode tab is the negative electrode of the second electrode core; The positive output terminal is electrically connected from the third electrode, and the negative output terminal is electrically connected from the fourth electrode. The first electrode core and the second electrode core are housed together in the same package shell, and the package shell is filled with electrolyte, which is in contact with the first electrode core and the second electrode core.

[0006] Optionally, a gap is provided between the first electrode core and the second electrode core.

[0007] Optionally, the first electrode tab is disposed at the end of the first side of the first electrode core, and the second electrode tab is disposed at the end of the second side of the second electrode core; The first side and the second side are parallel and adjacent to each other, and the first electrode and the second electrode are positioned opposite each other.

[0008] Optionally, the adapter piece is connected to the first electrode and the second electrode by welding or bonding.

[0009] Optionally, the adapter piece is fitted with a flexible protective sleeve, and the insulating protective sleeve at least covers the connection areas of the adapter piece with the first electrode and the second electrode respectively.

[0010] Optionally, the encapsulation shell is an aluminum-plastic film shell, wherein both the third tab and the fourth tab have leads extending beyond the aluminum-plastic film shell.

[0011] Optionally, the flexible protective sleeve is pressed against an aluminum-plastic film for encapsulating the battery. The aluminum-plastic film covers the first electrode core body, the second electrode core body, the adapter plate, and the first and second electrode tabs to fix the first electrode core, the second electrode core, and the adapter plate.

[0012] Optionally, the adapter plate may be made of aluminum alloys and / or tough stainless steel materials that are resistant to metal fatigue.

[0013] Optionally, the adapter piece is a flexible metal sheet that can be bent. Bending the adapter piece can change the relative position and angle between the first electrode core and the second electrode core; wherein, the most extreme bending position can allow the first electrode core and the second electrode core to be stacked together.

[0014] Optionally, it includes an electrode core body and a first electrode tab and a third electrode tab disposed on the electrode core body, wherein the first electrode tab is disposed at one end of a first side of the electrode core body, and the third electrode tab is disposed at the other end away from the first electrode tab; the first electrode tab is a positive electrode tab, and the third electrode tab is a negative electrode tab, and the third electrode tab is used to connect to the positive electrode tab of another electrode core.

[0015] Secondly, this application also provides an electrode core for a single high-voltage battery, including an electrode core body and a first electrode tab and a third electrode tab disposed on the electrode core body, wherein the first electrode tab is disposed at one end of a first side of the electrode core body, and the third electrode tab is disposed at the other end away from the first electrode tab; the first electrode tab is a positive electrode tab, and the third electrode tab is a negative electrode tab, and the third electrode tab is used to connect to the positive electrode tab of another electrode core.

[0016] Compared with the prior art, this application has the following advantages: The high-voltage single-cell battery provided in this application connects the two electrode cores with tabs of different polarities via an adapter plate, thus connecting the two electrode cores in series. The other two tabs on the two electrode cores serve as the positive and negative terminals of the entire battery. This technical solution simplifies the battery integration process, saves integration space, and achieves the technical effect of increasing the voltage of the single-cell battery by connecting the electrode cores in series within the single-cell battery.

[0017] Therefore, the single-cell high-voltage battery provided in this application embodiment can improve the voltage of a single cell, has a simple structure, occupies little space, and is suitable for application scenarios where high-voltage current can be obtained in the limited space of electronic devices. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a single high-voltage battery provided in the embodiments of this application.

[0019] Figure 2 This is a partially enlarged structural diagram of the adapter plate of a single high-voltage battery provided in the embodiments of this application.

[0020] Figure 3 This is a schematic diagram of the first structure of a single high-voltage battery with a fixed and encapsulated structure provided in the embodiments of this application.

[0021] Figure 4 This is a schematic diagram of the second structure of a single high-voltage battery with a fixed and encapsulated structure provided in an embodiment of this application.

[0022] Figure 5A This is a schematic diagram of the first structure of an electrode core for a single high-voltage battery provided in an embodiment of this application.

[0023] Figure 5B This is a schematic diagram of the second structure of an electrode core for a single high-voltage battery provided in an embodiment of this application. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions of this application, the application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. However, this application can be implemented in many other ways different from those described below. Therefore, based on the embodiments provided in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0025] It should be noted that the terms "first," "second," "third," etc., in the claims, specification, and drawings of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Such data are interchangeable where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than that shown or described in this application. Furthermore, the terms "comprising," "having," and their variations are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0026] It should be understood that in the embodiments of this application, "at least one" means one or more, and "more than one" means two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the related objects before and after it are in an "or" relationship. "Contains A, B and / or C" means containing any one, two, or three of A, B, and C.

[0027] It should be understood that in the embodiments of this application, "B corresponding to A", "B corresponding to A", "A corresponds to B" or "B corresponds to A" means that B is associated with A, and B can be determined based on A. Determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0028] To facilitate understanding of the various embodiments of this application, the application background of the embodiments will be explained.

[0029] The nominal voltage of lithium batteries commonly found in the market, which combine lithium cobalt oxide as the positive electrode and graphite as the negative electrode, is mainly determined by the electrochemical potential between the different positive and negative electrode materials, and is generally around 3.7V. Currently, high-voltage lithium cobalt oxide and graphite batteries can reach a maximum voltage of 4.5V, but further increasing the battery voltage by modifying the positive and negative electrode materials is extremely difficult. However, traditional low-voltage batteries have weak power output capabilities, failing to meet the application requirements of high-power devices. Furthermore, when the device power is fixed, low-voltage batteries require a larger output current to meet the device's needs, resulting in low energy transfer efficiency. Therefore, low-voltage batteries severely limit their application in electronic devices. Considering that, under the same maximum allowable discharge current, high-voltage batteries can provide several times the instantaneous power of low-voltage batteries, meeting the application requirements of high-power devices, existing technology proposes connecting two individual batteries in series. While this method can increase the battery pack voltage, the presence of a casing and other structures increases the system integration cost of the battery pack. The casing also requires more space for the battery, making it unsuitable for small, thin devices and significantly reducing space utilization.

[0030] Therefore, based on the current application requirements of high-power electronic devices for high-voltage batteries, and combined with the characteristics of simple electrode core structure and small space occupation, this application proposes to use two separate electrode cores connected in series inside a single cell to increase the voltage of the single cell.

[0031] The single high-voltage battery provided in this application embodiment includes a first electrode core, a second electrode core, an adapter plate, a positive output terminal of the single high-voltage battery, and a negative output terminal of the single high-voltage battery: the first electrode core and the second electrode core each include their own independent electrode core body and electrode tabs disposed on their respective electrode core bodies; wherein, the first electrode core is provided with a first electrode tab, and the second electrode core is provided with a second electrode tab; the first electrode tab is the negative electrode of the first electrode core, and the second electrode tab is the positive electrode of the second electrode core; the adapter plate is made of conductive material, and the adapter plate connects the first electrode tab and the second electrode tab, and connects the first electrode core and the second electrode core in series; the first electrode core is also provided with a third electrode tab, and the second electrode core is provided with a fourth electrode tab; the third electrode tab is the positive electrode of the first electrode core, and the fourth electrode tab is the negative electrode of the second electrode core; the positive output terminal is electrically connected and led out from the third electrode tab, and the negative output terminal is electrically connected and led out from the fourth electrode tab. In this design, the first and second electrode cores are independent, with a gap between them maintaining a certain distance; they are electrically connected only through tabs and an adapter plate. The negative tab of the first electrode core and the positive tab of the second electrode core are connected together via the adapter plate, achieving the connection of tabs of different polarities in the two electrode cores. This design allows the two electrode cores to be connected in series as a key structure of a single high-voltage battery. In practice, the adapter plate is made of materials including aluminum alloy resistant to metal fatigue and / or tough stainless steel.

[0032] If the first and second electrodes are connected via an adapter plate, the adapter plate can be welded or bonded to both electrodes. The adapter plate is also covered with a flexible protective sleeve, which enhances the toughness of the connection and prevents breakage at the connection point. The flexible protective sleeve can be positioned where the adapter plate contacts the first and second electrodes, at least covering the areas where the adapter plate is not connected to either electrode. The flexible protective sleeve also provides insulation. Furthermore, the flexible protective sleeve can extend to both ends to further cover the connection areas of the adapter plate with the first and second electrodes, ensuring a secure connection and good contact between the adapter plate and the electrodes.

[0033] To simplify the spatial structure of a single high-voltage battery and minimize its space occupation, the correspondence between the positions of the first tab and the second tab on their respective electrode cores can be further defined. In one embodiment, the first tab is disposed at one end of a first side of the first electrode core, and the second tab is disposed at one end of a second side of the second electrode core; wherein the first side and the second side are parallel and adjacent, and the positions of the first tab and the second tab are in corresponding positions close to each other, thereby shortening the length of the adapter piece connecting the first electrode core to the second electrode core.

[0034] To form a complete single high-voltage battery cell, the above structure needs to be encapsulated. During the encapsulation process, electrolyte is injected, and then the cell is sealed. Therefore, the single high-voltage battery cell also includes an aluminum-plastic film shell for providing battery encapsulation. The third and fourth tabs are configured to have protruding ends (lead-out portions) extending beyond the edge of the aluminum-plastic film shell. The portions of the third and fourth tabs extending beyond the edge of the aluminum-plastic film can serve as the positive and negative electrodes of the battery, respectively. The first electrode core and the second electrode core are jointly housed within the same encapsulation shell, and the encapsulation shell is filled with electrolyte, which is in contact with the first and second electrode cores. The encapsulation shell includes an aluminum-plastic film, a steel shell, or an aluminum shell.

[0035] Taking the aluminum-plastic film shell as an example, in order to better fix the position of the electrode core structure and prevent the internal structure of the single high-voltage battery from shaking, the flexible protective sleeve is pressed together with the aluminum-plastic film used to encapsulate the battery. The aluminum-plastic film covers the first electrode core body, the second electrode core body, the adapter piece, and the first and second electrode tabs to fix the first electrode core, the second electrode core, and the adapter piece.

[0036] Based on the aforementioned structure of a single high-voltage battery, to further save space, the first and second electrode cores can be folded using an adapter plate. Specifically, the adapter plate is a flexible, bendable metal sheet with toughness. Bending the adapter plate allows the first and second electrode cores to be brought closer together, changing their relative position and angle to the required spatial angle for installation. The most extreme bending position allows the first and second electrode cores to be stacked together. The stacked single high-voltage battery occupies a more concentrated space, improving space utilization to some extent. Furthermore, because there is a certain space between the first and second electrode cores, bending the adapter plate allows them to be folded at any angle. This characteristic provides possibilities for existing folding devices such as foldable screens, enabling them to meet high-voltage current requirements while changing battery shape and saving space.

[0037] The single high-voltage battery provided in this application embodiment can obtain high-voltage current by utilizing the limited space available in electronic devices, supporting the operation of devices requiring higher voltage. Furthermore, since the structure of this application embodiment involves connecting electrode cores in series, and compared to batteries and cells, electrode cores have a simpler structure and occupy less space, the single high-voltage battery obtained by connecting electrode cores in series has the advantages of simple manufacturing process and high space utilization. Secondly, since subsequent steps such as packaging are performed only after the electrode cores are connected in series, the integration of the single high-voltage battery can be achieved through a single packaging process.

[0038] To further adapt to more application scenarios, this application embodiment also provides a foldable function on the basis of providing high voltage from the single high-voltage battery, so as to adapt to more forms of electronic devices. Nowadays, the hardware performance, software functions, and usage requirements of electronic devices such as foldable screen phones and flexible laptops place higher demands on batteries. The power requirements of foldable devices are much higher than those of traditional rigid devices. For example, foldable screen phones usually have dual (multiple) screens or large screens, making the screen power consumption higher than that of a candybar phone, and multitasking increases the power requirements of the motherboard. Existing technologies have proposed foldable batteries that use a single-core structure and achieve folding through electrode plates or tabs. However, this structure has significant drawbacks and cannot meet the usage requirements of electronic devices: on the one hand, traditional foldable batteries have low voltage and require a large current to output high power, but a large current will cause severe battery heating, high stress on the wires, and require thicker wires, increasing the thickness of the device, which contradicts the popular thin and light characteristics; on the other hand, the repeated folding of devices in daily use requires the plates or tabs to be folded repeatedly, but the number of folds for the plates and tabs is limited, thus making the battery prone to breakage. Therefore, traditional foldable batteries are no longer suitable for existing foldable devices.

[0039] Therefore, the high-voltage battery provided in this application embodiment also has a foldable function, which can solve the problem in the prior art that the battery's shape transformation and voltage increase cannot be simultaneously achieved, and better adapts to existing folding devices. The following describes a preferred embodiment in detail with reference to the accompanying drawings to better understand the structure of this application. Some structures in the following content are the same as those in the foregoing embodiments, and the corresponding parts can be understood by comparison.

[0040] The single high-voltage battery provided in this application can be applied to the battery needs of various professional fields, such as foldable screen terminals, flexible wearable devices, new energy portable devices, and robots. Specifically, it can be applied to foldable smartwatches, minimally invasive surgical robots, foldable electric skateboards, portable drones, etc. This application does not specifically limit the application.

[0041] Please refer to Figure 1 and Figure 2 Understanding the embodiments of this application, Figure 1 This is a schematic diagram of the structure of a single high-voltage battery provided in an embodiment of this application. Figure 2 This is a partially enlarged structural diagram of the adapter plate of a single high-voltage battery provided in an embodiment of this application. The single high-voltage battery 100 includes a first electrode core 11, a second electrode core 12, an adapter plate 13, a positive electrode output terminal, and a negative electrode output terminal. The positive and negative electrode output terminals are directly led out by corresponding tabs. Each electrode core includes an independent electrode core body and at least one pair of tabs disposed on its respective electrode core body. The electrode core body is the core component inside the battery, usually composed of alternating stacked or wound positive electrode plates, negative electrode plates, and a separator. It is the core component for the battery to carry out electrochemical reactions and is responsible for storing and releasing electrical energy. The first electrode core 11 and the second electrode core 12 respectively include a first electrode core body 101 and a second electrode core body 102.

[0042] To facilitate the extraction of current from the electrode core, each electrode core is provided with a tab. A tab is typically a thin metal sheet used to extract the current from the battery and connect it to an external circuit or device. This is achieved by welding the tab metal strip to the positive and negative current collectors of the electrode core. Tabs can be drawn from either the positive or negative electrode on either side of the electrode core body. The tab drawn from the positive electrode is the positive tab, and the tab drawn from the negative electrode is the negative tab. In the embodiments of this application, the first tab and the second tab are used to connect the electrode core inside the battery. The first tab is a metal conductor drawn from the positive electrode of the first electrode core, and the second tab is a metal conductor drawn from the negative electrode of the second electrode core. The third tab and the fourth tab are used to connect the internal and external circuits of the electrode core.

[0043] As shown in the figure, in one embodiment of this application, the first electrode core 11 and the second electrode core 12 further include a first electrode tab 1011 led out from the first electrode core body 101 and a second electrode tab 1021 led out from the second electrode core body 102, respectively. In this embodiment, the first electrode core 11 and the second electrode core 12 are separated from each other and exist independently, with the adjacent areas providing space for folding the two electrode cores. To facilitate folding between the two electrode cores, the first electrode tab 1011 is disposed at one end of the folding edge of the first electrode core 11 near the folding area, and the second electrode tab 1021 is disposed at one end of the folding edge of the second electrode core 12 near the folding area, with the first electrode tab 1011 and the second electrode tab 1021 located at the same end of the folding edge. Specifically, the first electrode core 11 has the first electrode tab 1011, and the second electrode core 12 has the second electrode tab 1021; the first electrode tab 1011 is the negative electrode of the first electrode core 11, and the second electrode tab 1021 is the positive electrode of the second electrode core 12. The negative electrode tab of the first electrode core and the positive electrode tab of the second electrode core are connected to each other via an adapter piece 13, thus connecting the electrodes of different polarities in the two electrode cores. This design allows the two electrode cores to be connected in series as a key structure of a single high-voltage battery.

[0044] The first electrode core 11 and the second electrode core 12 are separated from each other by a certain distance, allowing them to be foldable. That is, the distance between the first and second electrode cores provides a foldable space, enabling folding of the first and second electrode cores by bending the adapter piece 13. The edges of the first and second electrode cores 11 and 12 that are close to each other are called folding edges. The distance can refer to the distance between the two folding edges of the two electrode cores, i.e., the width of the foldable space. The lower limit of this width is obviously related to the thickness of the first and second electrode cores 11 and 12, while the upper limit depends on the space provided by the electronic device to which the foldable battery needs to be installed; for example, in an embodiment for a foldable phone, it is approximately 3-5 millimeters. The tabs of each electrode core extend in a direction parallel to the extension direction of the folding edge. At this point, the distance between the tabs of the same electrode core is relatively close, but they cannot directly contact or connect. In this embodiment, a conductive material with bendable properties is used as an adapter piece, serving as the medium connecting the two electrode cores. The adapter piece is connected to the first and second electrode cores by welding or bonding, achieving conductive connection and folding between the first and second electrode cores. The adapter piece must possess conductive and fatigue-resistant properties, and is typically made of fatigue-resistant conductive materials such as aluminum alloys, stainless steel, nickel-based alloys, and cobalt-based alloys. Specific examples include 7076-T6 aluminum alloy, 6086 aluminum alloy, 6061 aluminum alloy, and 316 stainless steel.

[0045] To draw the positive and negative electrodes of a single high-voltage battery cell from the electrode core, the first electrode core is provided with a third tab 1012, and the second electrode core is provided with a fourth tab 1022; the third tab is the positive electrode of the first electrode core, and the fourth tab is the negative electrode of the second electrode core; the positive and negative output terminals are directly led out from the corresponding tabs, including: the positive output terminal is electrically connected to the third tab, and the negative output terminal is electrically connected to the fourth tab, that is, the third tab serves as the positive electrode of the single high-voltage battery cell, and the fourth tab serves as the negative electrode of the single high-voltage battery cell.

[0046] The technical solution described above achieves the folding of the first and second electrode cores by setting an adapter plate between them. Theoretically, as long as the tabs of different polarities from the two electrode cores are connected on the same side, the folding of the two electrode cores can be achieved, providing a technical basis for single-cell high-voltage batteries. Since the voltage of a battery composed of a single electrode core is fixed, if the volume or capacity of a battery composed of two electrode cores is the same as that of a battery composed of a single electrode core, then the volume or capacity of a battery composed of two electrode cores connected in series remains unchanged, while the voltage is increased. Therefore, the structure of the single-cell high-voltage battery provided in the embodiments of this application can increase the overall voltage of the battery.

[0047] Furthermore, to achieve better structure and performance for individual high-voltage cells, the following are some preferred approaches.

[0048] To minimize the length of the adapter piece, the location of the tabs is further defined. In one embodiment, the first tab 1011 is located at one end of the first electrode core 11 near the folded edge, and the second tab 1021 is located at one end of the second electrode core 12 near the folded edge. Since both the first tab 1011 and the second tab 1021 are close to the folded area, the required adapter piece length is short, but should be greater than the width of the folded area. This solution enables the folding of the first and second electrode cores via the adapter piece connection in a material-saving manner.

[0049] The tabs provided in this application embodiment can extend a certain distance to directly serve as the positive / negative electrodes of a single high-voltage battery. In the aforementioned embodiment, the first tab is the negative electrode of the first electrode core, the second tab is the positive electrode of the second electrode core, the third tab is the positive electrode of the first electrode core, and the fourth tab is the negative electrode of the second electrode core. The first and second tabs are connected via an adapter. The positive output terminal of the single high-voltage battery is electrically connected to the third tab, serving as the positive electrode of the single high-voltage battery, and the negative output terminal of the single high-voltage battery is electrically connected to the fourth tab, serving as the negative electrode of the single high-voltage battery. Similarly, in another embodiment, if the first tab is the positive electrode of the first electrode core and the second tab is the negative electrode of the second electrode core, then the first and second tabs are connected via an adapter, and the third tab is electrically connected to the negative output terminal of the single high-voltage battery, serving as the negative electrode of the single high-voltage battery, and the fourth tab is electrically connected to the positive output terminal of the single high-voltage battery, serving as the positive electrode of the single high-voltage battery. Therefore, to facilitate the connection of the tabs to the positive and negative output terminals of the individual high-voltage battery, the tabs, which serve as the positive or negative terminals of the individual high-voltage battery, need to extend outward a certain distance to connect to the battery's external wiring. The definition of tab polarity in the embodiments of this application is not fixed; it aims to satisfy the polarity relationship between tabs. Therefore, the polarity of each tab may not be limited to this, but should all conform to the relative relationship expressed in the embodiments of this application. Other cases will not be illustrated.

[0050] The aforementioned connection of the tabs via the adapter piece can be achieved through welding or bonding, aiming to electrically connect the tabs at both ends of the adapter piece. For example, the welding method can be resistance welding, laser welding, etc., and the bonding method includes pressing, binding, etc. In one embodiment, the first tab and the second tab are connected via the adapter piece, including: bonding one end of the adapter piece 13 to the first tab 1011 and the other end of the adapter piece 13 to the second tab 1021 by welding or bonding. There can be only one adapter piece, placed on the surface of the first and second tabs. In this case, if the folding direction of the single high-voltage battery is to rotate the two cores outwards from the paper surface, preferably, the adapter piece is located on the side facing outwards from the paper surface relative to the bonded tabs. Thus, when folded, the adapter piece is located inside the folding area. Of course, folding in the opposite direction is also entirely feasible under this structure.

[0051] In practice, the adapter piece is not limited to one. In one embodiment, the adapter piece may include adapter piece one and adapter piece two. Specifically, adapter piece one can be attached to a first surface on the same side where the first tab and the second tab are located, while adapter piece two can be attached to a second surface on the opposite side where the first tab and the second tab are located. This structure securely connects the first tab and the second tab via two opposing adapter pieces, and each adapter piece can be directly connected to the tab by welding or bonding. In this embodiment, the single high-voltage battery can be folded arbitrarily in either the upward or downward direction. Because the adapter piece connection structure is provided on both opposite sides of the tab on the same side in this embodiment, the adapter piece provides good support for the folding function regardless of whether the single high-voltage battery is folded upward or downward.

[0052] In the aforementioned embodiment, the folding of the first and second pole pieces is achieved using a connector made of a conductive material with bendable properties. However, in actual use, to improve the buffering effect of the connector and better resist wear caused by repeated folding, a flexible protective sleeve can be provided on the connector to increase the toughness of the folded portion and prevent deformation and damage. Please refer to... Figure 3 , Figure 3 This is a schematic diagram of a first structure of a single high-voltage battery with a fixed and encapsulated structure provided in an embodiment of this application. In one embodiment, a flexible protective sleeve 31 is fitted over the exposed portion of the adapter piece 13 that is not in contact with the first electrode tab 1011 and the second electrode tab 1021. Typically, the length of the adapter piece fitted by the flexible protective sleeve is not less than the width of the folded area provided by the gap between the first electrode core and the second electrode core, thus improving the buffering and toughness of the folded portion. The flexible protective sleeve is a protective structure made of flexible material, which may include materials with both flexibility and toughness such as ABS plastic, PC, and PVC, and the thickness of the flexible material can be 0.1-2 mm.

[0053] The two tabs of the electrode core provided in this application embodiment can serve as the positive and negative electrodes of a single high-voltage battery. The electrode core is an important component of the battery, and is further packaged into a single high-voltage battery based on the structure provided above. Please continue reading. Figure 3In one embodiment, the single high-voltage battery further includes an aluminum-plastic film 32 for providing battery encapsulation. The aluminum-plastic film 32 can fix structures such as the electrode core and adapter plate by pressing. Specifically, the flexible protective sleeve is pressed against the aluminum-plastic film for encapsulating the battery. The aluminum-plastic film covers the first electrode core body, the second electrode core body, the adapter plate, and the first and second tabs to fix the first electrode core, the second electrode core, and the adapter plate. The third and fourth tabs extend beyond the edge of the aluminum-plastic film and serve as the positive and negative electrodes of the single high-voltage battery. Specifically, the tab serving as the positive electrode of the single high-voltage battery is configured with a first protruding end extending beyond the edge of the aluminum-plastic film. Correspondingly, the tab serving as the negative electrode of the single high-voltage battery is configured with a second protruding end extending beyond the edge of the aluminum-plastic film. The first and second protruding ends respectively constitute the positive and negative electrodes of the single high-voltage battery. This is an example; please refer to the following section. Figure 3 Taking the first tab 1011 as the negative electrode as an example, the third tab 1012 is the positive electrode. The first protruding end 301 of the third tab 1012 is located outside the lower edge of the aluminum-plastic film. The first protruding end 301 can serve as the positive electrode of a single high-voltage battery. Simultaneously, the second tab 1012 is also a positive electrode. The second protruding end 302 of the fourth tab 1022 is configured to extend beyond the lower edge of the aluminum-plastic film. The second protruding end 302 can serve as the negative electrode of a single high-voltage battery. To ensure a uniform current distribution within the single high-voltage battery, the positive and negative tabs of the electrode core are generally located on both sides of the electrode core. Typically, the positive tab is located on the top or one side of the electrode core, and the negative tab is located on the other side. The third tab is located on the first electrode core body and is situated at a considerable distance from the first tab; the fourth tab is located on the second electrode core body and is situated at a considerable distance from the second tab. Figure 4 As shown, the first tab 1011 and the second tab 1021 are located on the bottom edges of the first electrode core and the second electrode core, respectively. The third electrode core 1012 and the fourth electrode core 1022 are located on the upper ends of the sides of the first electrode core and the second electrode core, respectively, away from the folding area. This electrode core arrangement can avoid excessive local current and temperature, and poor battery heat dissipation, thus helping to ensure the safety and performance of the battery. This application also provides another tab arrangement and packaging method, please refer to... Figure 4 , Figure 4This is a schematic diagram of the second structure of a single high-voltage battery with a fixed and encapsulated structure provided in this embodiment. Taking the first tab as the positive electrode as an example, the first tab 1011 is the positive electrode, and the third tab 1012 is the negative electrode. The first protruding end 401 of the third tab 1012 is located outside the left edge of the aluminum-plastic film. The first protruding end 401 can serve as the negative electrode of the single high-voltage battery. At the same time, the second tab 1021 is the negative electrode, and the fourth tab 1022 is the positive electrode. The second protruding end 402 of the fourth tab 1022 is configured to be longer than the edge of the aluminum-plastic film. The second protruding end 402 can serve as the positive electrode of the single high-voltage battery.

[0054] In one embodiment, the width of the aluminum-plastic film on the side where the adapter piece is welded to the tab can exceed the flexible protective sleeve on the adapter piece by 1-5 mm. During packaging, the aluminum-plastic film and the flexible protective sleeve are hot-pressed together to better fix the adapter piece, thereby making it less likely for the single high-voltage battery to shift during folding. At the same time, the flexibility of the aluminum-plastic film further improves the foldability of the battery, providing protection for the single high-voltage battery from multiple aspects.

[0055] The high-voltage battery provided in this application embodiment folds two independent electrode cores and converts the folded structure into an adapter plate, avoiding the risk of breakage of the electrode plates and tabs. A flexible protective sleeve wraps the folded portion of the adapter plate, enhancing its cushioning effect and preventing deformation damage. The tabs of the electrode cores extend beyond the edge of the aluminum-plastic film, achieving the positive and negative electrode functions of the battery with a simple structural design. The ingenious placement of the tabs and the folding area provides a foldable battery that is not easily broken and has a simple structure. By connecting the two electrode cores in series, the internal voltage of the single cell is enhanced, avoiding heat generation and wiring problems caused by high current. Simultaneously, the increased voltage significantly reduces transmission losses. Therefore, the single-cell high-voltage battery provided in this application embodiment avoids battery overheating and adapts to dynamic spaces through folding, effectively resolving the contradiction between battery performance and flexibility. Its combination of flexibility and high voltage breaks the limitations of device form and power supply requirements, making foldable high-voltage batteries possible and making a significant contribution to simultaneously achieving slim and lightweight electronic devices with high-power supply.

[0056] This application also provides an electrode core for a single high-voltage battery. Since the structure of the electrode core has been described in detail in the aforementioned embodiments of the single high-voltage battery, it will be described simply in the following sections. For details of the relevant technical features and the effects achieved, please refer to the corresponding descriptions of the embodiments of the single high-voltage battery provided above.

[0057] The electrode core for a single high-voltage battery includes an electrode core body and a first electrode tab and a third electrode tab disposed on the electrode core body. The first electrode tab is disposed at one end of a first side of the electrode core body, and the third electrode tab is disposed at the other end away from the first electrode tab. The first electrode tab is a positive electrode tab, and the third electrode tab is a negative electrode tab. The third electrode tab is used to connect to the positive electrode tab of another electrode core. Please refer to [link / reference]. Figure 5A , Figure 5A This is a schematic diagram of a first structure for a single-cell high-voltage battery, provided as an embodiment of this application. The single-cell high-voltage battery electrode 51 includes an electrode body 501 and tabs disposed on the electrode body. The tabs include a first tab 502-1 and a third tab 502-2. The first tab 502-1 is located at the edge of a first side of the electrode body 501 and is a positive tab, for connection to the negative tab of a second electrode. Please refer to... Figure 5B , Figure 5B This is a schematic diagram of a second structure for a single high-voltage battery core provided in an embodiment of this application. In another embodiment of this application, the negative electrode tab 502-1 is disposed on the edge of the core body 501 near the first side, and the positive electrode tab 502-2 is disposed on the opposite side away from the tab 502-1. Please refer to the relevant content of the foregoing embodiments for detailed description.

[0058] The electrode core for a single high-voltage battery provided in this application has two tabs for easy subsequent connection and folding, providing a technical basis for the foldability of single high-voltage batteries. By connecting a pair of tabs with different polarities on two correspondingly designed electrode cores, the folding of the single battery can be achieved by bending the adapter piece, and the voltage of the single battery is increased by connecting the electrode cores in series inside the battery, enabling the battery to support high-power devices. Furthermore, by connecting the tabs of the two electrode cores to each other, the folding of the single battery is transformed from the direct folding of the electrode plates or tabs of the electrode cores to the folding of the adapter piece between the two electrode cores. This solution can effectively avoid damage to the electrode plates or tabs and improve the folding resistance of the single high-voltage battery.

[0059] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A single-cell high-voltage battery, characterized in that, It includes a first electrode core, a second electrode core, an adapter plate, the positive output terminal and the negative output terminal of the single high-voltage battery cell, and a package casing: The first electrode core and the second electrode core each include their own independent electrode core bodies and electrode tabs disposed on their respective electrode core bodies; wherein, the first electrode core is provided with a first electrode tab and the second electrode core is provided with a second electrode tab; the first electrode tab is the negative electrode of the first electrode core and the second electrode tab is the positive electrode of the second electrode core; The adapter piece is made of conductive material. The adapter piece connects the first electrode tab and the second electrode tab, and connects the first electrode core and the second electrode core in series. The first electrode core is further provided with a third electrode tab, and the second electrode core is provided with a fourth electrode tab; the third electrode tab is the positive electrode of the first electrode core, and the fourth electrode tab is the negative electrode of the second electrode core; The positive output terminal is electrically connected from the third electrode, and the negative output terminal is electrically connected from the fourth electrode. The first electrode core and the second electrode core are housed together in the same package shell, and the package shell is filled with electrolyte, which is in contact with the first electrode core and the second electrode core.

2. The single-cell high-voltage battery according to claim 1, characterized in that, A gap is provided between the first electrode core and the second electrode core.

3. The single-cell high-voltage battery according to claim 2, characterized in that, The first electrode tab is disposed at the end of the first side of the first electrode core, and the second electrode tab is disposed at the end of the second side of the second electrode core; The first side and the second side are parallel and adjacent to each other, and the first electrode and the second electrode are positioned opposite each other.

4. The single-cell high-voltage battery according to claim 2, characterized in that, The adapter plate is connected to the first electrode and the second electrode by welding or binding.

5. The single-cell high-voltage battery according to claim 2, characterized in that, The adapter piece is covered with an insulating protective sleeve, which at least covers the area of ​​the adapter piece that is not connected to the first and second electrodes.

6. The single-cell high-voltage battery according to claim 1, characterized in that, The encapsulation shell is an aluminum-plastic film shell, and both the third tab and the fourth tab have leads extending out of the aluminum-plastic film shell.

7. The single-cell high-voltage battery according to claim 4, characterized in that, The adapter piece is fitted with a flexible protective sleeve. The first electrode core includes a first electrode core body, and the second electrode core includes a second electrode core body. The flexible protective sleeve is pressed against an aluminum-plastic film for encapsulating the battery. The aluminum-plastic film covers the first electrode core body, the second electrode core body, the adapter piece, and the first and second tabs to fix the first electrode core, the second electrode core, and the adapter piece.

8. The single-cell high-voltage battery according to claim 1, characterized in that, The adapter plate is made of aluminum alloy and / or tough stainless steel materials that are resistant to metal fatigue.

9. The single-cell high-voltage battery according to claim 1, characterized in that, The adapter piece is a flexible metal sheet that can be bent. Bending the adapter piece can change the relative position and angle between the first electrode core and the second electrode core; wherein, the most extreme bending position can make the first electrode core and the second electrode core stacked together.

10. A electrode core for a single high-voltage battery, characterized in that, It includes an electrode core body and a first electrode tab and a third electrode tab disposed on the electrode core body, wherein the first electrode tab is disposed at one end of a first side of the electrode core body, and the third electrode tab is disposed at the other end away from the first electrode tab; the first electrode tab is a positive electrode tab, and the third electrode tab is a negative electrode tab, and the third electrode tab is used to connect to the positive electrode tab of another electrode core.

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