A rechargeable dry cell battery based on a laminated metal-ion cell core

Abstract

The application discloses a rechargeable dry battery based on a laminated metal ion battery core, which comprises a metal ion battery pack and a power supply control module in a cylindrical battery body, wherein the metal ion battery pack is composed of a plurality of electric core monomers which are repeatedly attached and stacked in parallel, the positive plate and the negative plate of the electric core monomer each comprise a base body and a tab, the base body is provided with a three-dimensional micro honeycomb structure, the three-dimensional micro honeycomb structure comprises a plurality of hexagonal micro honeycomb chambers and a honeycomb net wall formed around the micro honeycomb chambers; the base body of the positive plate is coated with a positive electrode material on the surface provided with the three-dimensional micro honeycomb structure, the micro honeycomb chambers of the positive plate are filled with the positive electrode material, the base body of the negative plate is coated with a negative electrode material on the surface provided with the three-dimensional micro honeycomb structure, and the micro honeycomb chambers of the negative plate are filled with the negative electrode material. The application improves the battery energy density and the battery charging speed, can directly replace the existing dry battery for use, and is convenient for application requirements.

Description

Technical Field

[0001] This utility model relates to the field of rechargeable dry cell technology, and in particular to a rechargeable dry cell based on a stacked metal-ion battery core. Background Technology

[0002] Commonly used cylindrical dry cell batteries mainly include zinc-manganese dry cell batteries, alkaline zinc-manganese dry cell batteries, magnesium-manganese dry cell batteries, zinc-air batteries, and zinc oxide mercury batteries, etc., as primary batteries. These include standard 1.5V batteries in sizes D, D, D, 5, and 7, and are the most common type of battery. Commonly used non-cylindrical batteries also include 4.5V / 6V / 9V / 12V prismatic batteries. Commonly used cylindrical lithium batteries mainly include 3.7V or 3.2V lithium-ion batteries in models such as 18650, 26650, 18500, and 14500, etc., as secondary batteries, and are the most common type of battery.

[0003] Commonly used cylindrical dry cell batteries are convenient to use and inexpensive, resulting in a huge global production volume. They are widely used in various small electronic devices, such as flashlights, toys, and remote controls. However, because commonly used cylindrical dry cell batteries are primary chemical batteries, their capacity is relatively low, their lifespan is short, and discarded batteries pollute the environment. Commonly used cylindrical lithium batteries are secondary chemical batteries, with higher capacity and longer lifespan, but their performance still has significant room for improvement. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a rechargeable dry cell based on a stacked metal-ion battery core, which improves battery energy density and charging speed, and can directly replace existing dry cell batteries, thus facilitating application needs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A rechargeable dry cell based on a stacked metal-ion battery cell, comprising:

[0007] A cylindrical battery body, wherein the bottom of the cylindrical battery body is the negative terminal of the dry cell battery and the top is the positive terminal of the dry cell battery, and power is supplied to an external load through the negative terminal and the positive terminal of the dry cell battery;

[0008] A metal-ion battery pack is disposed inside the cylindrical battery body;

[0009] A charging interface is located on the side or top of the cylindrical battery body for connecting to an external power source.

[0010] A power supply control module is located inside the cylindrical battery body and is used to control the charging and discharging of the metal-ion battery pack and the power supply to external loads.

[0011] The metal-ion battery pack is composed of multiple battery cells stacked and connected in parallel. Each battery cell includes a positive electrode, a negative electrode, and an electrolyte, with the electrolyte disposed between the positive and negative electrode. Both the positive and negative electrode include a substrate and tabs. The substrate has a three-dimensional micro-honeycomb structure, which includes multiple hexagonal microcells and honeycomb walls surrounding the microcells. The substrate of the positive electrode is coated with a positive electrode material on the surface with the three-dimensional micro-honeycomb structure, and the microcells of the positive electrode are filled with the positive electrode material. The substrate of the negative electrode is coated with a negative electrode material on the surface with the three-dimensional micro-honeycomb structure, and the microcells of the negative electrode are filled with the negative electrode material. The substrate and the microcells are made of the same material and are integrally formed.

[0012] In some embodiments, the size of the microcells in the three-dimensional micro-honeycomb structure is in the micrometer or nanometer range.

[0013] In some embodiments, the three-dimensional micro-honeycomb structure is disposed on one or both sides of the substrate.

[0014] In some embodiments, the three-dimensional micro-honeycomb structure is recessed into the substrate surface of the positive and negative electrode sheets.

[0015] In some embodiments, the three-dimensional micro-honeycomb structure protrudes from the surfaces of the positive and negative electrode plates.

[0016] In some embodiments, the power supply control module includes a battery protection unit, a charging management unit, and a load power supply unit. The battery protection unit is connected to the metal-ion battery pack and is used to prevent overcharging, over-discharging, and overcurrent of the metal-ion battery pack. The charging management unit is connected to an external power source through the charging interface and to the metal-ion battery pack through the battery protection unit, and is used to manage the charging process of the metal-ion battery pack by the external power source. The load power supply unit is connected to an external load through the positive and negative terminals of the cylindrical battery body, connected to the metal-ion battery pack through the battery protection unit, and connected to an external power source through the charging interface. It is used to supply power to the external load by connecting the metal-ion battery pack when no external power source is connected, and to supply power to the external load by connecting the external power source when an external power source is connected, and to adjust the output voltage.

[0017] In some embodiments, the battery protection unit includes a battery protection chip, a first NMOS transistor, a second NMOS transistor, a resistor R3, and a capacitor C1. The power supply terminal of the battery protection chip is connected to the positive terminal of the metal-ion battery pack. The ground terminal of the battery protection chip is connected to the negative terminal of the metal-ion battery pack and the source of the first NMOS transistor. The over-discharge protection terminal of the battery protection chip is connected to the gate of the first NMOS transistor. The overcharge protection terminal of the battery protection chip is connected to the gate of the second NMOS transistor. The drain of the first NMOS transistor is connected to the drain of the second NMOS transistor. The source of the second NMOS transistor is connected to the power supply ground terminal. The power detection terminal of the battery protection chip is connected to the negative terminal of the metal-ion battery pack through the resistor R3. The capacitor C1 is connected in parallel between the power supply terminal and the ground terminal of the battery protection chip. The power supply ground terminal is connected to the negative terminal of the dry cell battery and the negative terminal of an external power supply.

[0018] In some embodiments, the charging management unit includes a charging management chip, resistors R4, R6, and R7, LEDs D1 and D2, and capacitor C4. The power supply terminal of the charging management chip is connected to the positive terminal of an external power source, and the ground terminal of the charging management chip is connected to the power source ground. The positive terminal of the external power source is also connected to the charging indicator terminal of the charging management chip through resistor R7 and LED D2. The charging output terminal of the charging management chip is connected to the positive terminal of the metal-ion battery pack. The positive terminal of the external power source is also connected to the full charge indicator terminal of the charging management chip through resistor R6 and LED D1. The control terminal of the charging management chip is connected to the power source ground through resistor R4, and the charging output terminal of the charging management chip is connected to the power source ground through capacitor C4. The power source ground is connected to the negative terminal of the dry cell battery and the negative terminal of the external power source.

[0019] In some embodiments, the load power supply unit includes a PNP transistor, a voltage regulator chip, a resistor R8, a capacitor C5, and a capacitor C6. The base of the PNP transistor is connected to the positive terminal of an external power supply and is connected to the power supply ground through the resistor R8. The emitter of the PNP transistor is connected to the positive terminal of the metal-ion battery pack. The collector of the PNP transistor is connected to the base and is connected to the input terminal of the voltage regulator chip. The output terminal of the voltage regulator chip is connected to the positive terminal of the dry cell battery. The ground terminal of the voltage regulator chip is connected to the power supply ground. The input terminal of the voltage regulator chip is connected to the power supply ground through the capacitor C5. The output terminal of the voltage regulator chip is connected to the power supply ground through the capacitor C6. The power supply ground is connected to the negative terminal of the dry cell battery and the negative terminal of the external power supply.

[0020] In some embodiments, the charging interface is a USB interface.

[0021] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0022] This application employs a stacked metal-ion battery core and sets a three-dimensional micro-honeycomb structure on the positive and negative electrode substrates of the metal-ion battery. Compared with traditional commonly used cylindrical dry cell batteries, commonly used non-cylindrical prismatic batteries, and commonly used cylindrical lithium batteries, the battery energy density and charging speed are significantly improved. This application also realizes the protection and charging management of the metal-ion battery pack through a built-in power supply control module. It can be charged by connecting to an external power source through a charging interface and can output different voltage specifications. It is compatible with the output voltage standards of various commonly used cylindrical dry cell batteries, prismatic batteries, and lithium batteries, and can directly replace existing corresponding models of dry cell batteries, greatly facilitating application needs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1;

[0025] Figure 2 This is a schematic diagram of the structure of the metal-ion battery pack in Example 1;

[0026] Figure 3 This is a schematic diagram of the positive and negative electrode plates in Example 1;

[0027] Figure 4 yes Figure 3 Cross-sectional view at point AA;

[0028] Figure 5 This is a schematic diagram illustrating the migration of metal ions and the movement of electrons during the charging and discharging process of a liquid metal-ion battery.

[0029] Figure 6 This is an electrical structure block diagram of the power supply control module in Embodiment 1;

[0030] Figure 7 This is the circuit diagram of the battery protection unit in Embodiment 1;

[0031] Figure 8 This is a circuit schematic diagram of the charging management unit in Embodiment 1;

[0032] Figure 9 This is the circuit schematic diagram of the load power supply unit in Embodiment 1;

[0033] Figure 10 This is the circuit schematic diagram of the charging interface in Embodiment 1;

[0034] Figure 11 This is a schematic diagram of the structure of the metal-ion battery pack in Example 2;

[0035] Figure 12 This is a schematic diagram of the structure of the positive and negative electrode plates in Example 2;

[0036] Figure 13 yes Figure 12 Cross-sectional view at BB;

[0037] Figure 14 This is a schematic diagram of the structure of the metal-ion battery pack in Example 3;

[0038] Figure 15 This is a schematic diagram of the positive and negative electrode plates in Example 3;

[0039] Figure 16 yes Figure 15 Cross-sectional view at CC;

[0040] Figure 17 This is a schematic diagram of the structure of the metal-ion battery pack in Example 4;

[0041] Figure 18 This is a schematic diagram of the positive and negative electrode structures in Example 4;

[0042] Figure 19 yes Figure 18 Cross-sectional view at DD.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100. Cylindrical battery body; 110. Dry cell negative electrode; 120. Dry cell positive electrode; 130. Indicator light; 200. Metal-ion battery pack; 200'. Metal-ion battery pack; 210. Single cell; 211. Positive electrode plate; 211'. Positive electrode plate; 212. Negative electrode plate; 212'. Negative electrode plate; 213. Electrolyte; 220. Substrate; 230. Tab; 240. Three-dimensional micro-honeycomb structure; 241. Micro-honeycomb cell; 242. Honeycomb wall; 300. Charging interface; 400. Power supply control module; 410. Battery protection unit; 420. Charging management unit; 430. Load power supply unit. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings.

[0046] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0047] Example 1

[0048] See Figure 1 This application provides a rechargeable dry cell based on a stacked metal-ion battery core, comprising: a cylindrical battery body 100, a metal-ion battery pack 200, a charging interface 300, and a power supply control module 400. The bottom of the cylindrical battery body 100 is the negative electrode 110, and the top is the positive electrode 120, supplying power to an external load through the negative electrode 110 and the positive electrode 120. The metal-ion battery pack 200 is disposed inside the cylindrical battery body. The charging interface 300 is disposed on the side or top of the cylindrical battery body 100 for connecting to an external power source. The power supply control module 400 is disposed inside the cylindrical battery body 100 for controlling the charging and discharging of the metal-ion battery pack 200 and the power supply to the external load.

[0049] See Figure 2 The metal-ion battery pack 200 is composed of multiple battery cells 210 that are repeatedly bonded, stacked and connected in parallel. Each battery cell 210 includes a positive electrode 211, a negative electrode 212 and an electrolyte 213, with the electrolyte 213 disposed between the positive electrode 211 and the negative electrode 212.

[0050] See Figure 3 , Figure 4 Both the positive electrode 211 and the negative electrode 212 include a substrate 220 and a tab 230. The substrate 220 is provided with a three-dimensional micro honeycomb structure 240. The three-dimensional honeycomb structure 240 includes multiple hexagonal micro honeycomb cells 241 and honeycomb mesh walls 242 formed around the micro honeycomb cells 241. The substrate 220 and the three-dimensional micro honeycomb structure 240 are made of the same material and are integrally formed.

[0051] The substrate 220 of the positive electrode 211 is coated with a positive electrode material on its surface having a three-dimensional micro-honeycomb structure 240, and the micro-honeycomb cells 241 of the positive electrode 211 are filled with the positive electrode material (not shown in the figure). The substrate 220 of the negative electrode 212 is coated with a negative electrode material on its surface having a three-dimensional micro-honeycomb structure 240, and the micro-honeycomb cells 241 of the negative electrode 212 are filled with the negative electrode material (not shown in the figure).

[0052] This embodiment uses a stacked metal-ion battery core and sets a three-dimensional micro-honeycomb structure on the positive and negative electrode substrates of the metal-ion battery. Compared with traditional commonly used cylindrical dry batteries, commonly used non-cylindrical prismatic batteries, and commonly used cylindrical lithium batteries, the battery energy density and battery charging speed are significantly improved.

[0053] It should be noted that the tab 230 is an extension of the substrate 220. The positive electrode 211 of multiple battery cells 210 are interconnected through the tab 230 to form the positive electrode of the metal-ion battery pack 200, and the negative electrode 212 of multiple battery cells 210 are interconnected through the tab 230 to form the negative electrode of the metal-ion battery pack 200.

[0054] Electrolyte 213 is the ion-conducting medium between the positive and negative electrodes inside the battery. Its configuration varies depending on the type of metal-ion battery. For example, solid-state batteries use a solid electrolyte; liquid-state batteries use a electrolyte composed of a liquid electrolyte (or electrolyte solution) + a separator + a liquid electrolyte (or electrolyte solution) bonded together. The separator, placed between the liquid electrolyte in a liquid-state battery, acts as an isolating electrode, preventing direct contact between the surface-active materials on the two electrodes and thus avoiding short circuits inside the battery. However, the separator still needs to allow charged ions to pass through, forming a pathway.

[0055] The cyclic charging and discharging process of a metal-ion battery system is essentially the effect of electrochemical phenomena generated during the repeated migration of metal ions and electrons between the positive and negative electrodes. Taking a liquid metal-ion battery as an example... Figure 5 This diagram illustrates the migration of metal ions and the movement of electrons during charging and discharging.

[0056] During charging, starting from the battery pack interface, external current is shunted through the positive electrode tabs and enters the positive electrode substrates inside the battery. The positive electrode material undergoes an electrochemical reaction under the influence of the current in the positive electrode substrate. At this time, metal ions are released from the metal compounds in the positive electrode material, releasing electrons. These metal ions migrate and embed into the lattice gaps of the negative electrode material through the electrolyte, placing the negative electrode in a metal-ion-rich state. Electrons reach the negative electrode through the external circuit, and are simultaneously absorbed.

[0057] During discharge, the circuit is connected, and an electrochemical reaction occurs in the negative electrode material. Metal ions in the lattice gaps of the negative electrode material are released and electrons are released. The metal ions migrate through the electrolyte to the positive electrode material and combine with the positive electrode material that has lost metal ions to regenerate metal compounds. Electrons reach the positive electrode through the external circuit and are simultaneously received.

[0058] The charging and discharging processes described above in the metal-ion battery system complete the battery's charge and discharge cycle. The following are the chemical reaction equations for the charging and discharging of the positive and negative electrodes of a lithium cobalt oxide battery. From left to right, the chemical reactions are for charging; from right to left, the chemical reactions are for discharging.

[0059] Positive electrode: LiCoO2 ←→ Li 1-x CoO2+xLi + +xe -

[0060] Negative electrode: 6C+xLi + +xe - ←→Li x C6

[0061] Overall reaction: LiCoO2 + 6C ⇌ Li 1-x CoO2+Li x C6

[0062] As examples, the positive electrode substrate is generally made of aluminum-based metal plates, and the positive electrode material can be ternary lithium, lithium iron phosphate, lithium cobalt oxide, or lithium manganese oxide, etc. The negative electrode substrate is generally made of copper-based metal plates, and the negative electrode material can be graphite or mesophase carbon microspheres (MCMB), etc.

[0063] Traditional metal-ion batteries consist of positive and negative electrodes directly bonded to their respective substrates, forming a planar two-dimensional structure between the substrates and the materials. To improve battery performance, the substrates are typically made as thin as possible to increase the number of individual cells per unit thickness.

[0064] Unlike traditional positive and negative electrode sheets, this application establishes a three-dimensional micro honeycomb structure 240 between the substrate 220 of the positive electrode sheet 211 and negative electrode sheet 212 of appropriate thickness in the metal-ion battery and the bonding contact interface of the positive or negative electrode material. The size of the micro honeycomb cells 241 in the three-dimensional micro honeycomb structure 240 is at the micrometer or nanometer level.

[0065] For the positive and negative electrode substrates, the numerous three-dimensional micro-honeycomb structures 240 and the many micro-cells 241 contained therein serve as electrode containers for the small molecular clusters of positive and negative electrode materials, providing physical structural support for the construction of the small molecular clusters of positive and negative electrode materials and constructing the battery electrodes. For the positive and negative electrode materials, at the bonding interface between the substrate 220 of the positive electrode 211 and the negative electrode 212 and the positive or negative electrode material, the positive and negative electrode materials are constructed into micron-sized small molecular cluster particle structures with the same shape as the micro-cells 241, establishing a fast charging technology architecture based on the surface area effect.

[0066] Clearly, the three-dimensional micro-honeycomb structure 240 of the metal-ion battery creates conditions for a surface area effect at the interface between the substrate 220 of the positive and negative electrode sheets and the contact interface of the positive and negative electrode materials. This surface area effect enables the positive and negative electrode materials to exhibit new physical properties, greatly improving their effective utilization rate, significantly increasing the effective space for electrochemical reaction activity, the effective space for lattice void activity in the negative electrode material, and the effective storage space for metal ions. Under the condition of constant battery volume, the three-dimensional micro-honeycomb structure model on the positive and negative electrodes of this novel metal-ion battery, compared with the traditional two-dimensional planar structure model, has a surface area effect that allows the current to reach the contact surface of the micron-sized small molecular clusters in the positive electrode material. This activates a greater number of material molecules on the surface of the micron-sized small molecular clusters in the positive electrode material to participate in the electrochemical reaction. The micron-sized small molecular clusters in the positive electrode material release a greater total amount of free metal ions and electrons, while the micron-sized small molecular clusters in the negative electrode material can also provide a greater total amount of free metal ions to store lattice gaps, thereby significantly improving the unit energy density of the battery.

[0067] On the other hand, under this surface area effect, the material molecules on the surface of the micron-sized molecular clusters in the cathode material participate in the electrochemical reaction more extensively, releasing more free metal ions and electrons per unit time. This surface area effect fast charging technology architecture significantly accelerates the charging speed. Similarly, the discharging speed can also be significantly accelerated.

[0068] In theory, the smaller the size of the microcells 241 in the three-dimensional micro-honeycomb structure 240, the more microcell structures can be accommodated on the positive electrode 211 and negative electrode 212 per unit area, resulting in a greater surface area effect and a greater improvement in the performance of the metal-ion battery.

[0069] In some embodiments, see Figure 3 , Figure 4 The three-dimensional micro-honeycomb structure 240 is set on one side of the substrate 220.

[0070] Figure 2 In the metal-ion battery pack 200 shown, the substrates of the positive electrode 211 and the negative electrode 212 are provided with a three-dimensional micro-honeycomb structure on one side. In two adjacent battery cells 210, the positive electrode 211 or the negative electrode 212 are arranged back to back.

[0071] In some embodiments, see Figures 2-4 The three-dimensional micro-honeycomb structure 240 is recessed on the surface of the substrate 220 of the positive electrode 211 and the negative electrode 212.

[0072] In some embodiments, see Figure 6The power supply control module 400 includes a battery protection unit 410, a charging management unit 420, and a load power supply unit 430. The battery protection unit 410 is connected to the metal-ion battery pack 200 and is used to prevent overcharging, over-discharging, and overcurrent of the metal-ion battery pack 200. The charging management unit 420 is connected to an external power source through a charging interface 300 and is also connected to the metal-ion battery pack 200 through the battery protection unit 410, and is used to manage the charging process of the metal-ion battery pack 200 by the external power source. The load power supply unit 430 is connected to an external load through the positive terminal 110 and negative terminal 120 of the cylindrical battery body 100, connected to the metal-ion battery pack 200 through the battery protection unit 410, and connected to an external power source through the charging interface 300. It is used to connect the metal-ion battery pack 200 to supply power to the external load when no external power source is connected, and to connect the external power source to supply power to the external load when an external power source is connected, and to adjust the output voltage.

[0073] This application utilizes a built-in power supply control module to achieve protection and charging management of the metal-ion battery pack. It can be charged via an external power source through a charging interface and can output different voltage specifications. It is compatible with the output voltage standards of various commonly used cylindrical dry cell batteries, prismatic batteries, and lithium batteries, and can directly replace existing corresponding dry cell batteries, greatly facilitating application needs.

[0074] In some embodiments, see Figure 7 The battery protection unit 410 includes a battery protection chip U2, a first NMOS transistor, a second NMOS transistor, a resistor R3, and a capacitor C1. Figure 7 The first and second NMOS transistors are combined and housed in chip U3. The power supply terminal VDD of battery protection chip U2 is connected to the positive terminal BAT+ of metal-ion battery pack 200. The ground terminal VSS of battery protection chip U2 is connected to the negative terminal BAT- of metal-ion battery pack 200 and the source S1 of the first NMOS transistor. The over-discharge protection terminal OD of battery protection chip U2 is connected to the gate G1 of the first NMOS transistor. The over-charge protection terminal OC of battery protection chip U2 is connected to the gate G2 of the second NMOS transistor. The drains D1 / D2 of the first NMOS transistor are connected to the drains D1 / D2 of the second NMOS transistor. The source S2 of the second NMOS transistor is connected to the power ground terminal GND. The power detection terminal CSI of battery protection chip U2 is connected to the negative terminal BAT- of metal-ion battery pack 200 through resistor R3. A capacitor C1 is connected in parallel between the power supply terminal VDD and the ground terminal VSS of battery protection chip U2. The power ground terminal GND is connected to the negative terminal 110 of the dry cell battery and the negative terminal of the external power supply.

[0075] In practical implementation, the battery protection chip U2 detects the voltage at the positive terminal BAT+ of the metal-ion battery pack 200 through the power supply terminal VDD, and detects the current of the metal-ion battery pack 200 through DW01A. When the metal-ion battery pack 200 is in an overcharged, over-discharged, or overcurrent state, the overcharge protection terminal OC and the over-discharge protection terminal OD control the conduction state of the first NMOS transistor and the second NMOS transistor, thereby controlling the connection state of the negative terminal BAT- of the metal-ion battery pack 200 with the power supply ground terminal GND. When the negative terminal BAT- of the metal-ion battery pack 200 is connected to the power supply ground terminal GND, the metal-ion battery pack 200 can discharge to an external load or receive charging from an external power source. When the negative terminal BAT- of the metal-ion battery pack 200 is disconnected from the power supply ground terminal GND, the metal-ion battery pack 200 is disconnected from both the external load and the external power source, thus protecting the metal-ion battery pack 200.

[0076] As an example, the battery protection chip U2 could be model DW01A. The chip U3 could be model GTT8205S.

[0077] In some embodiments, see Figure 8 The charging management unit 420 includes a charging management chip U1, resistors R4, R6, and R7, LEDs D1 and D2, and capacitor C4. The power supply terminal VCC of the charging management chip U1 is connected to the positive terminal VBUS of the external power supply. The ground terminal GND of the charging management chip U1 is connected to the power supply ground terminal GND. The positive terminal VBUS of the external power supply is also connected to the charging indicator terminal CHRG of the charging management chip U1 through resistor R7 and LED D2. The charging output terminal BAT of the charging management chip U1 is connected to the positive terminal BAT+ of the metal-ion battery pack 200. The positive terminal VBUS of the external power supply is also connected to the full charge indicator terminal FULL of the charging management chip U1 through resistor R6 and LED D1. The control terminal PROG of the charging management chip U1 is connected to the power supply ground terminal GND through resistor R4. The charging output terminal BAT of the charging management chip U1 is connected to the power supply ground terminal GND through capacitor C4. The power supply ground terminal GND is connected to the negative terminal of the dry cell battery and the negative terminal of the external power supply.

[0078] In practical implementation, the charging process of the metal-ion battery pack 200 is controlled by the charging management chip U1, enabling four charging processes: short-circuit, trickle charging, constant current charging, and constant voltage charging. The charging current is output through the charging output terminal BAT of the charging management chip U1. During the charging process, the charging indicator terminal CHRG of the charging management chip U1 controls the LED D1 to light up; when fully charged, the full charge indicator terminal FULL of the charging management chip U1 controls the LED D1 to light up. See also... Figure 1LEDs D2 and D1 can be disposed on the surface of the cylindrical battery body 100 as indicator lights 130.

[0079] As an example, the model number of the charging management chip U1 could be LGS4084H.

[0080] In some embodiments, see Figure 9 The load power supply unit 430 includes a PNP transistor Q1, a voltage regulator chip U4, a resistor R8, a capacitor C5, and a capacitor C6. The base of the PNP transistor Q1 is connected to the positive terminal VBUS of the external power supply and is connected to the power ground GND through the resistor R8. The emitter of the PNP transistor Q1 is connected to the positive terminal BAT+ of the metal-ion battery pack 200. The collector of the PNP transistor Q1 is connected to the base and is connected to the input terminal of the voltage regulator chip U4. The output terminal VCC of the voltage regulator chip U4 is connected to the positive terminal of the dry cell battery. The ground terminal of the voltage regulator chip U4 is connected to the power ground GND. The input terminal of the voltage regulator chip U4 is connected to the power ground GND through the capacitor C5. The output terminal of the voltage regulator chip U4 is connected to the power ground GND through the capacitor C6. The power ground GND is connected to the negative terminal of the dry cell battery and the negative terminal of the external power supply.

[0081] In practice, when no external power supply is connected, the base of PNP transistor Q1 is pulled low by resistor R8, and PNP transistor Q1 is turned on. The metal-ion battery pack 200 supplies power to the external load through the voltage regulator chip U4. When an external power supply is connected, if the external voltage is higher than the battery voltage, PNP transistor Q1 is turned off, and the external power supply supplies power to the external load through the voltage regulator chip U4.

[0082] The voltage regulator chip U4 can adjust the supply voltage to external loads, for example, providing voltage outputs such as 1.5V, 3.2V, 3.7V, 4.5V, 6V, 9V or 12V.

[0083] As an example, the voltage regulator chip U4 can be model PW6566-A-15, which can provide a 1.5V voltage output.

[0084] In some embodiments, the charging interface 300 is a USB interface.

[0085] Figure 10 An example of a USB Type-C charging port 300 is provided.

[0086] Example 2

[0087] This application provides a second embodiment of a rechargeable dry cell based on a stacked metal-ion battery core, which differs from the first embodiment in that, see [link to embodiment]. Figures 11-13In the metal-ion battery pack 200', a three-dimensional micro-honeycomb structure 240 is disposed back-to-back on both sides of the substrate 220 of the positive electrode 211' and the negative electrode 212'. When constructing the metal-ion battery pack 200', two adjacent battery cells 210 share the positive electrode 211' or the negative electrode 212'.

[0088] Example 3

[0089] This application provides a third embodiment of a rechargeable dry cell based on a stacked metal-ion battery core. The difference between this embodiment and the first embodiment is that... (See...) Figures 14-16 The three-dimensional micro-honeycomb structure 240 protrudes from the surface of the substrate 220 of the positive electrode 211 and the negative electrode 212.

[0090] Example 4

[0091] This application provides a fourth embodiment of a rechargeable dry cell based on a stacked metal-ion battery core, which differs from embodiment two in that... (See also...) Figures 17-19 The three-dimensional micro-honeycomb structure 240 protrudes from the surface of the substrate 220 of the positive electrode (211, 211') and the negative electrode (212, 212').

[0092] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A rechargeable dry cell battery based on a laminated metal-ion cell core, characterized in that, include: A cylindrical battery body, wherein the bottom of the cylindrical battery body is the negative terminal of the dry cell battery and the top is the positive terminal of the dry cell battery, and power is supplied to an external load through the negative terminal and the positive terminal of the dry cell battery; A metal-ion battery pack is disposed inside the cylindrical battery body; A charging interface is located on the side or top of the cylindrical battery body for connecting to an external power source. A power supply control module is located inside the cylindrical battery body and is used to control the charging and discharging of the metal-ion battery pack and the power supply to external loads. The metal-ion battery pack is composed of multiple battery cells stacked and connected in parallel. Each battery cell includes a positive electrode, a negative electrode, and an electrolyte, with the electrolyte disposed between the positive and negative electrode. Both the positive and negative electrode include a substrate and tabs. The substrate has a three-dimensional micro-honeycomb structure, which includes multiple hexagonal microcells and honeycomb walls surrounding the microcells. The substrate of the positive electrode is coated with a positive electrode material on the surface with the three-dimensional micro-honeycomb structure, and the microcells of the positive electrode are filled with the positive electrode material. The substrate of the negative electrode is coated with a negative electrode material on the surface with the three-dimensional micro-honeycomb structure, and the microcells of the negative electrode are filled with the negative electrode material. The substrate and the microcells are made of the same material and are integrally formed.

2. The rechargeable dry cell based on a stacked metal-ion battery core according to claim 1, characterized in that the size of the microcells in the three-dimensional micro-honeycomb structure is at the micrometer or nanometer level.

3. A rechargeable dry cell based on a stacked metal-ion battery core according to claim 1, characterized in that the three-dimensional micro-honeycomb structure is disposed on one or both sides of the substrate.

4. A rechargeable dry cell based on a stacked metal-ion battery core according to claim 1, characterized in that the three-dimensional micro-honeycomb structure is recessed on the substrate surface of the positive electrode and the negative electrode.

5. A rechargeable dry cell based on a stacked metal-ion battery core according to claim 1, characterized in that the three-dimensional micro-honeycomb structure protrudes from the surfaces of the positive and negative electrode plates.

6. A rechargeable dry cell based on a stacked metal-ion battery cell according to claim 1, characterized in that the power supply control module includes a battery protection unit, a charging management unit, and a load power supply unit; the battery protection unit is connected to the metal-ion battery pack to prevent overcharging, over-discharging, and overcurrent of the metal-ion battery pack; the charging management unit is connected to an external power source through the charging interface and to the metal-ion battery pack through the battery protection unit, for managing the charging process of the metal-ion battery pack by the external power source; the load power supply unit is connected to an external load through the positive and negative terminals of the cylindrical battery cell, connected to the metal-ion battery pack through the battery protection unit, and connected to an external power source through the charging interface, for supplying power to the external load through the metal-ion battery pack when no external power source is connected, and supplying power to the external load through the external power source when an external power source is connected, and adjusting the output voltage.

7. A rechargeable dry cell based on a stacked metal-ion battery core according to claim 6, characterized in that the battery protection unit includes a battery protection chip, a first NMOS transistor, a second NMOS transistor, a resistor R3, and a capacitor C1; the power supply terminal of the battery protection chip is connected to the positive terminal of the metal-ion battery pack; the ground terminal of the battery protection chip is connected to the negative terminal of the metal-ion battery pack and the source of the first NMOS transistor; the over-discharge protection terminal of the battery protection chip is connected to the gate of the first NMOS transistor; the overcharge protection terminal of the battery protection chip is connected to the gate of the second NMOS transistor; the drain of the first NMOS transistor is connected to the drain of the second NMOS transistor; the source of the second NMOS transistor is connected to the power supply ground terminal; the power detection terminal of the battery protection chip is connected to the negative terminal of the metal-ion battery pack through the resistor R3; the capacitor C1 is connected in parallel between the power supply terminal and the ground terminal of the battery protection chip; and the power supply ground terminal is connected to the negative terminal of the dry cell and the negative terminal of an external power supply.

8. A rechargeable dry cell based on a stacked metal-ion battery core according to claim 6, characterized in that the charging management unit includes a charging management chip, resistors R4, R6, and R7, a light-emitting diode D1 LED, a light-emitting diode D2 LED, and a capacitor C4; the power supply terminal of the charging management chip is connected to the positive terminal of an external power supply; the ground terminal of the charging management chip is connected to the power supply ground terminal; the positive terminal of the external power supply is also connected to the charging indicator terminal of the charging management chip through resistor R7 and light-emitting diode D2 LED; the charging output terminal of the charging management chip is connected to the positive terminal of the metal-ion battery pack; the positive terminal of the external power supply is also connected to the fully charged indicator terminal of the charging management chip through resistor R6 and light-emitting diode D1 LED; the control terminal of the charging management chip is connected to the power supply ground terminal through resistor R4; the charging output terminal of the charging management chip is connected to the power supply ground terminal through capacitor C4; and the power supply ground terminal is connected to the negative terminal of the dry cell and the negative terminal of the external power supply.

9. A rechargeable dry cell based on a stacked metal-ion battery core according to claim 6, characterized in that the load power supply unit includes a PNP transistor, a voltage regulator chip, a resistor R8, a capacitor C5, and a capacitor C6; the base of the PNP transistor is connected to the positive terminal of an external power supply and is connected to the power supply ground terminal through the resistor R8; the emitter of the PNP transistor is connected to the positive terminal of the metal-ion battery pack; the collector of the PNP transistor is connected to the base and is connected to the input terminal of the voltage regulator chip; the output terminal of the voltage regulator chip is connected to the positive terminal of the dry cell; the ground terminal of the voltage regulator chip is connected to the power supply ground terminal; the input terminal of the voltage regulator chip is connected to the power supply ground terminal through the capacitor C5; the output terminal of the voltage regulator chip is connected to the power supply ground terminal through the capacitor C6; and the power supply ground terminal is connected to the negative terminal of the dry cell and the negative terminal of the external power supply.

10. A rechargeable dry cell based on a stacked metal-ion battery core according to claim 1, characterized in that the charging interface is a USB interface.

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