Lithium battery with charging protection structure and working method thereof

Abstract

The invention discloses a lithium battery with a charging protection structure and a working method thereof, relates to the technical field of lithium battery structures, and aims to solve the problems that a lithium battery in the prior art is lack of a charging protection structure, and lithium metal has very high requirements on the environment during processing, storage, use and the like due to very active chemical characteristics of the lithium metal. And potential safety hazards are easy to occur during charging. A pull cover is arranged on the upper surface of the protective shell, a first magnetic suction plate is arranged on the rear end face of the pull cover, a second magnetic suction plate is arranged at the rear end of the first magnetic suction plate, the first magnetic suction plate is connected with the second magnetic suction plate in a magnetic suction mode, and a handle is arranged on the upper surface of the pull cover; the heat dissipation device comprises a protective shell and further comprises a heat dissipation assembly arranged on the front end face of the protective shell, four first opening and closing plates are arranged on the heat dissipation assembly, heat dissipation fans are installed on the four first opening and closing plates, and second opening and closing plates are arranged at the bottoms of the end faces of the two sides of the protective shell.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery structures, in particular to a lithium battery with a charging protection structure and a working method thereof. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and uses non-aqueous electrolyte solutions. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable.

[0003] For example, the Chinese authorized patent with announcement number CN217903403U (a lithium battery structure): includes a battery cell and a shell, the battery cell is arranged in the shell, and an electrolyte storage structure is arranged between the battery cell and the shell, the electrolyte storage structure is used to shrink the main structure and release the electrolyte stored inside when subjected to the squeezing force of the battery cell expansion and deformation, the electrolyte storage structure includes a foam layer, the foam layer is arranged between the side of the battery cell and the inner surface of the shell at the corresponding position, the foam layer is a structure with numerous pores, the electrolyte is infiltrated in the foam layer, and by arranging the electrolyte storage structure inside the battery, as the battery is used for a longer time, the battery core package expands and squeezes the electrolyte storage structure, thereby releasing the electrolyte pre-stored in the electrolyte storage structure, and timely replenishing the battery system with fresh electrolyte, thereby improving the performance and life of the battery cell.

[0004] However, the lithium battery in the above-mentioned prior art lacks a charging protection structure. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high environmental requirements, which easily leads to safety hazards during charging. Therefore, it does not meet the existing needs. We propose a lithium battery with a charging protection structure and a working method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium battery with a charging protection structure and a working method thereof, so as to solve the problem that the lithium battery in the prior art mentioned in the above background technology lacks a charging protection structure. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high requirements on the environment, which easily leads to safety hazards during charging.

[0006] To achieve the above object, the present invention provides the following technical solution: a lithium battery with a charging protection structure, comprising a protective shell and a lithium battery, wherein a pull-out cover is provided on the upper surface of the protective shell, a first magnetic plate is provided on the rear end surface of the pull-out cover, a second magnetic plate is provided on the rear end of the first magnetic plate, and the first magnetic plate is magnetically connected to the second magnetic plate, and a handle is provided on the upper surface of the pull-out cover;

[0007] Also includes:

[0008] A heat dissipation component is arranged on the front end surface of the protective shell, and a first opening and closing plate is arranged on the heat dissipation component, and four first opening and closing plates are arranged, and heat dissipation fans are installed on the four first opening and closing plates, and second opening and closing plates are arranged on the bottom of both side end surfaces of the protective shell;

[0009] A rotating blade is arranged above the second opening and closing plate, and a plurality of the rotating blades are arranged. The rotating blades are rotatably connected to the inside of the end surfaces on both sides of the protective shell. Connecting pieces are arranged on both sides of the front and rear end surfaces of the protective shell, and rotating knobs are installed on the connecting pieces.

[0010] Preferably, limit plates are provided on both sides of the pull-out cover, and the limit plates are plug-connected to the inside of the top end of the protective shell.

[0011] Preferably, a mounting seat is provided at the bottom end of the protective shell, and two mounting seats are provided, and placement grooves are provided on the upper surfaces of the two mounting seats.

[0012] Preferably, a lithium battery is arranged on the placement slot, a shell is arranged on the surface of the lithium battery, and a battery cover is arranged on the top of the shell.

[0013] Preferably, a positive terminal is disposed on the top of the battery cover, a negative terminal is disposed on the bottom of the shell, and a current collecting rod is disposed inside the lithium battery.

[0014] Preferably, isolation pads are arranged around the current collecting rod, an anode is arranged on one side of the isolation pad, and a cathode is arranged on the other side of the isolation pad.

[0015] Preferably, a charging port is provided on the rear end face of the protective shell, a door body is provided on the front end face of the charging port, and the door body is rotatably connected to the bottom of the charging port.

[0016] Preferably, a plug interface is provided on one side of the charging port, and a detector is provided on the other side of the charging port.

[0017] Preferably, a current sensor and a temperature sensor are provided between the plug interface and the detector.

[0018] Preferably, the working method of a lithium battery with a charging protection structure comprises the following steps:

[0019] Step 1: Place the lithium battery in the placement slot on the mounting seat inside the protective shell and fix it to connect the circuit completely. Then, connect the pull-out cover to the top of the protective shell by plugging it into the limit plate, so that the first magnetic plate on the rear end of the pull-out cover is fixedly connected with the second magnetic plate;

[0020] Step 2: Operate the protective case as a whole before using the lithium battery, and use the connecting wire to connect it with the plug interface inside the charging port. Also use the plug interface to connect when charging;

[0021] Step 3: When charging, the four cooling fans on the heat dissipation assembly will work to ensure that the inside of the protective shell is cooled. At the same time, the rotating blades on both sides of the protective shell are adjusted by turning the knob to adjust the opening and closing angle of the rotating blades, so that the air inside the protective shell can circulate and dissipate heat during charging;

[0022] Step 4: During charging, the current sensor and temperature sensor transmit the temperature and current rate of the lithium battery to the inside of the detector. The detector is used to perform real-time monitoring during the charging process and perform power-off protection operations when abnormal values ​​appear.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention arranges a detector, a current sensor and a temperature sensor inside the charging port, places the lithium battery inside the placement groove on the mounting seat inside the protective shell and fixes it to complete the line connection, then connects the pull-out cover to the internal plug-in of the top of the protective shell by using a limit plate, so that the first magnetic plate and the second magnetic plate on the rear end surface of the pull-out cover are fixedly connected by magnetic attraction. During charging, the current sensor and the temperature sensor transmit the temperature and current rate of the lithium battery to the inside of the detector, and the detector is used to perform real-time monitoring during the charging process, and perform power-off protection operation when abnormal values ​​appear, thereby solving the problem of lack of charging protection structure on the lithium battery in the prior art. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high environmental requirements, so that safety hazards are prone to occur during charging.

[0025] 2. By setting a heat dissipation component on the front face of the protective shell, when charging, the four heat dissipation fans on the heat dissipation component will work to ensure the heat dissipation inside the protective shell. At the same time, the rotating blades on the end faces of both sides of the protective shell can adjust the opening and closing angles of the rotating blades by turning the rotating knob, so that the air inside the protective shell can circulate and dissipate heat during charging, thereby ensuring the heat dissipation effect inside.

[0026] 3. By arranging a mounting seat and a placement groove at the bottom end of the protective shell, the installed lithium battery can be limited and fixed to ensure its stability during use. At the same time, the rotating leaves are connected by the connecting rod inside the connecting piece, and the connecting rod is driven to move up and down when the rotating knob is turned, thereby opening and closing the rotating leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the lithium battery protective shell of the present invention;

[0028] Figure 2 It is an enlarged schematic diagram of the internal cross-sectional structure of the lithium battery of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the lithium battery protective shell of the present invention;

[0030] Figure 4 This is a schematic diagram of the back structure of the lithium battery protective shell of the present invention;

[0031] Figure 5 A schematic diagram of the steps for using the lithium battery protective case of the present invention;

[0032] In the figure: 1. protective shell; 2. pull-out cover; 3. first magnetic plate; 4. second magnetic plate; 5. handle; 6. limit plate; 7. connector; 8. rotating knob; 9. heat dissipation component; 10. first opening and closing plate; 11. heat dissipation fan; 12. second opening and closing plate; 13. rotating blade; 14. lithium battery; 15. battery cover; 16. positive terminal; 17. negative terminal; 18. shell; 19. collector rod; 20. isolation pad; 21. anode; 22. cathode; 23. mounting seat; 24. placement slot; 25. charging port; 26. door body; 27. plug interface; 28. detector; 29. ​​current sensor; 30. temperature sensor. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] See also Figure 1-5 , an embodiment of the present invention: a lithium battery with a charging protection structure, comprising a protective shell 1 and a lithium battery 14, a pull-out cover 2 is provided on the upper surface of the protective shell 1, a first magnetic plate 3 is provided on the rear end surface of the pull-out cover 2, a second magnetic plate 4 is provided on the rear end of the first magnetic plate 3, and the first magnetic plate 3 is magnetically connected to the second magnetic plate 4, and a handle 5 is provided on the upper surface of the pull-out cover 2;

[0035] Also includes:

[0036] A heat dissipation component 9 is arranged on the front end surface of the protective shell 1. A first opening and closing plate 10 is arranged on the heat dissipation component 9, and four first opening and closing plates 10 are arranged. A heat dissipation fan 11 is installed on the four first opening and closing plates 10. Second opening and closing plates 12 are arranged at the bottom of both side end surfaces of the protective shell 1.

[0037] The rotating blade 13 is arranged above the second opening and closing plate 12, and a plurality of the rotating blades 13 are arranged. The rotating blades 13 are rotatably connected to the inner side of the end faces of the protective shell 1. Connectors 7 are arranged on both sides of the front and rear end faces of the protective shell 1. A rotating button 8 is installed on the connector 7. The lithium battery 14 is placed in the placement groove 24 on the mounting seat 23 inside the protective shell 1 and fixed to complete the line connection. Then, the pull-out cover 2 is plugged and connected to the inner side of the top of the protective shell 1 by using the limiting plate 6, so that the first magnetic plate 3 on the rear end face of the pull-out cover 2 is connected to the second magnetic plate 3 on the rear end face of the pull-out cover 2. The magnetic plate 4 can be fixedly connected by magnetic attraction; the protective shell 1 is operated as a whole before using the lithium battery 14, and the connecting line is used to plug and connect with the plug interface 27 inside the charging port 25, and the plug interface 27 is also used for charging; when charging, the four cooling fans 11 on the heat dissipation component 9 will work to ensure that the inside of the protective shell 1 is cooled, and at the same time, the rotating leaves 13 on the end faces of both sides of the protective shell 1 are adjusted by rotating the rotating knob 8 to adjust the opening and closing angle of the rotating leaves 13, so that the air inside the protective shell 1 can be ventilated during charging. The current sensor 29 and the temperature sensor 30 transmit the temperature and current rate of the lithium battery 14 to the inside of the detector 28. The detector 28 is used to perform real-time monitoring during the charging process and perform power-off protection operation when abnormal values ​​appear, which solves the problem of lack of charging protection structure on the lithium battery 14 in the prior art. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements, so that safety hazards are prone to occur during charging. In the charging state, lithium ions are separated from the positive terminal 16, which is usually composed of lithium-containing metal oxides, and migrate to the negative terminal 17 through the electrolyte, which is usually made of graphite, and are embedded in the negative terminal 17 to form a lithium-rich state. In the discharge state, that is, when the battery is discharged or used, lithium ions are separated from the negative terminal 17 and return to the positive terminal 16 through the electrolyte. At the same time, electrons flow from the negative electrode to the positive electrode through the external circuit, so that the electrons can reach the positive electrode and participate in the chemical reaction. This round-trip movement of lithium ions enables the battery to store and release energy, and the flow of electrons generates current to drive the electrical appliance to work.

[0038] See also Figure 1-Figure 5 , both sides of the pull-out cover 2 are provided with limiting plates 6, and the limiting plates 6 are plug-connected with the inner part of the top of the protective shell 1.

[0039] See also Figure 1-Figure 5 A mounting seat 23 is provided at the bottom end of the protective shell 1, and two mounting seats 23 are provided. A placement groove 24 is provided on the upper surface of the two mounting seats 23. The lithium battery 14 is placed in the placement groove 24 on the mounting seat 23 inside the protective shell 1 and fixed to complete the line connection. Then, the pull-out cover 2 is connected to the internal plug-in of the top of the protective shell 1 by using the limiting plate 6, so that the first magnetic attraction plate 3 and the second magnetic attraction plate 4 on the rear end surface of the pull-out cover 2 are fixedly connected by magnetic attraction.

[0040] See also Figure 1-Figure 5 A lithium battery 14 is arranged on the placement slot 24, a shell 18 is arranged on the surface of the lithium battery 14, and a battery cover 15 is arranged on the top of the shell 18. When charging, the four cooling fans 11 on the heat dissipation component 9 will work to ensure that the inside of the protective shell 1 is cooled. At the same time, the rotating leaves 13 on the end faces of both sides of the protective shell 1 are adjusted by rotating the rotating knob 8 to adjust the opening and closing angle of the rotating leaves 13, so that the air inside the protective shell 1 can circulate and dissipate heat during charging.

[0041] See also Figure 1-Figure 5 A positive terminal 16 is provided on the top of the battery cover 15, a negative terminal 17 is provided on the bottom of the shell 18, and a current collecting rod 19 is provided inside the lithium battery 14. In the charging state, lithium ions are separated from the positive terminal 16, which is usually composed of lithium-containing metal oxides, and migrate to the negative terminal 17 through the electrolyte, which is usually made of graphite and embedded in the negative terminal 17 to form a lithium-rich state. In the discharge state, that is, when the battery is discharged or used, lithium ions are separated from the negative terminal 17 and return to the positive terminal 16 through the electrolyte. At the same time, electrons flow from the negative electrode to the positive electrode through the external circuit, so that the electrons can reach the positive electrode and participate in the chemical reaction. This round-trip movement of lithium ions enables the battery to store and release energy, and the flow of electrons generates current to drive the electrical appliance to work.

[0042] See also Figure 1-Figure 5 , isolation pads 20 are arranged around the current collecting rod 19, an anode 21 is arranged on one side of the isolation pad 20, and a cathode 22 is arranged on the other side of the isolation pad 20. In the charging state, lithium ions are separated from the positive terminal 16, which is usually composed of lithium-containing metal oxides, and migrate to the negative terminal 17 through the electrolyte, which is usually made of graphite and embedded in the negative terminal 17 to form a lithium-rich state. In the discharge state, that is, when the battery is discharged or used, lithium ions are separated from the negative terminal 17 and return to the positive terminal 16 through the electrolyte. At the same time, electrons flow from the negative electrode to the positive electrode through the external circuit, so that the electrons can reach the positive electrode and participate in the chemical reaction. This round-trip movement of lithium ions enables the battery to store and release energy, and the flow of electrons generates current to drive the electrical appliance to work.

[0043] See also Figure 1-Figure 5 A charging port 25 is disposed on the rear end surface of the protective shell 1 , a door body 26 is disposed on the front end surface of the charging port 25 , and the door body 26 is rotatably connected to the bottom of the charging port 25 .

[0044] See also Figure 1-Figure 5A plug interface 27 is provided on one side of the charging port 25, and a detector 28 is provided on the other side of the charging port 25. The current sensor 29 and the temperature sensor 30 transmit the temperature and current rate of the lithium battery 14 to the inside of the detector 28. The detector 28 is used to perform real-time monitoring during the charging process and perform power-off protection operation when abnormal values ​​appear.

[0045] See also Figure 1-Figure 5 A current sensor 29 and a temperature sensor 30 are provided between the plug interface 27 and the detector 28. The protective shell 1 is operated as a whole before the lithium battery 14 is used. The connecting line is used to plug and connect with the plug interface 27 inside the charging port 25. The plug interface 27 is also used for charging. When charging, the current sensor 29 and the temperature sensor 30 transmit the temperature and current rate of the lithium battery 14 to the inside of the detector 28. The detector 28 is used to perform real-time monitoring during the charging process, and a power-off protection operation is performed when an abnormal value appears. In the charging state In the discharge state, that is, when the battery is discharged or used, lithium ions are separated from the negative terminal 17 and return to the positive terminal 16 through the electrolyte. At the same time, electrons flow from the negative electrode to the positive electrode through the external circuit, so that the electrons can reach the positive electrode and participate in the chemical reaction. This round-trip movement of lithium ions enables the battery to store and release energy, and the flow of electrons generates current to drive the electrical appliance to work.

[0046] See also Figure 1-Figure 5 , a working method of a lithium battery with a charging protection structure, comprising the following steps:

[0047] Step 1: Place the lithium battery 14 in the placement groove 24 on the mounting seat 23 inside the protective shell 1 and fix it to complete the circuit connection. Then, connect the pull-out cover 2 to the top of the protective shell 1 by plugging and connecting it with the limiting plate 6, so that the first magnetic plate 3 and the second magnetic plate 4 on the rear end surface of the pull-out cover 2 are fixedly connected by magnetic attraction.

[0048] Step 2: Before using the lithium battery 14, operate the protective shell 1 as a whole, and use the connecting wire to connect it with the plug interface 27 inside the charging port 25, and also use the plug interface 27 to connect when charging;

[0049] Step 3: When charging, the four cooling fans 11 on the heat dissipation assembly 9 will work to ensure that the inside of the protective shell 1 is cooled. At the same time, the rotating blades 13 on both sides of the protective shell 1 are adjusted by rotating the rotating knob 8 to adjust the opening and closing angle of the rotating blades 13, so that the air inside the protective shell 1 can circulate and dissipate heat during charging;

[0050] Step 4: During charging, the current sensor 29 and the temperature sensor 30 transmit the temperature and current rate of the lithium battery 14 to the inside of the detector 28. The detector 28 is used to perform real-time monitoring during the charging process and perform power-off protection operation when abnormal values ​​appear. In the charging state, lithium ions are separated from the positive terminal 16, which is usually composed of lithium-containing metal oxides, and migrate to the negative terminal 17 through the electrolyte, which is usually made of graphite, and are embedded in the negative terminal 17 to form a lithium-rich state. In the discharge state, that is, when the battery is discharged or used, lithium ions are separated from the negative terminal 17 and return to the positive terminal 16 through the electrolyte. At the same time, electrons flow from the negative electrode to the positive electrode through the external circuit, so that the electrons can reach the positive electrode and participate in the chemical reaction. This round-trip movement of lithium ions enables the battery to store and release energy, and the flow of electrons generates current to drive the electrical appliance to work.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A lithium battery with a charging protection structure, comprising a protective shell (1) and a lithium battery (14), wherein the upper surface of the protective shell (1) is provided with a pull-out cover (2), the rear end surface of the pull-out cover (2) is provided with a first magnetic attraction plate (3), the rear end of the first magnetic attraction plate (3) is provided with a second magnetic attraction plate (4), and the first magnetic attraction plate (3) is magnetically connected to the second magnetic attraction plate (4), and the upper surface of the pull-out cover (2) is provided with a handle (5); Features: Also includes: A heat dissipation component (9) is arranged on the front end surface of the protective shell (1), the heat dissipation component (9) is provided with a first opening and closing plate (10), and four first opening and closing plates (10) are provided, and heat dissipation fans (11) are installed on the four first opening and closing plates (10), and second opening and closing plates (12) are provided at the bottom of both side end surfaces of the protective shell (1); A rotating blade (13) is arranged above the second opening and closing plate (12), and a plurality of the rotating blades (13) are provided. The rotating blades (13) are rotatably connected to the inside of the end surfaces on both sides of the protective shell (1). Connecting pieces (7) are provided on both sides of the front and rear end surfaces of the protective shell (1), and a rotating knob (8) is installed on the connecting piece (7).

2. A lithium battery with a charging protection structure according to claim 1, characterized in that: Limiting plates (6) are provided on both sides of the pull-out cover (2), and the limiting plates (6) are plug-connected to the inside of the top end of the protective shell (1).

3. A lithium battery with a charging protection structure according to claim 1, characterized in that: A mounting seat (23) is provided at the bottom end of the protective shell (1), and two mounting seats (23) are provided, and placement grooves (24) are provided on the upper surfaces of the two mounting seats (23).

4. A lithium battery with a charging protection structure according to claim 3, characterized in that: A lithium battery (14) is arranged on the placement groove (24), a shell (18) is arranged on the surface of the lithium battery (14), and a battery cover (15) is arranged on the top of the shell (18).

5. A lithium battery with a charging protection structure according to claim 4, characterized in that: A positive terminal (16) is arranged on the top of the battery cover (15), a negative terminal (17) is arranged on the bottom of the shell (18), and a current collecting rod (19) is arranged inside the lithium battery (14).

6. A lithium battery with a charging protection structure according to claim 5, characterized in that: Isolation pads (20) are arranged around the current collecting rod (19), an anode (21) is arranged on one side of the isolation pad (20), and a cathode (22) is arranged on the other side of the isolation pad (20).

7. A lithium battery with a charging protection structure according to claim 1, characterized in that: The rear end face of the protective shell (1) is provided with a charging port (25), the front end face of the charging port (25) is provided with a door body (26), and the door body (26) is rotatably connected to the bottom of the charging port (25).

8. A lithium battery with a charging protection structure according to claim 7, characterized in that: A plug interface (27) is provided on one side of the charging port (25), and a detector (28) is provided on the other side of the charging port (25).

9. A lithium battery with a charging protection structure according to claim 8, characterized in that: A current sensor (29) and a temperature sensor (30) are provided between the plug interface (27) and the detector (28).

10. A working method of a lithium battery with a charging protection structure, implemented based on the charging protection structure of any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the lithium battery (14) in the placement groove (24) on the mounting seat (23) inside the protective shell (1) and fix it to complete the circuit connection. Then, connect the pull-out cover (2) to the top of the protective shell (1) by plugging it into the inner part using the limiting plate (6), so that the first magnetic attraction plate (3) and the second magnetic attraction plate (4) on the rear end surface of the pull-out cover (2) are fixedly connected by magnetic attraction. Step 2: Before using the lithium battery (14), the protective shell (1) is operated as a whole, and the connecting wire is used to connect with the plug interface (27) inside the charging port (25). The plug interface (27) is also used for connection during charging; Step 3: When charging, the four cooling fans (11) on the cooling assembly (9) will work to ensure that the inside of the protective shell (1) is cooled. At the same time, the rotating blades (13) on both sides of the protective shell (1) are adjusted by rotating the rotating knob (8) to adjust the opening and closing angle of the rotating blades (13), so that the air inside the protective shell (1) can circulate and dissipate heat during charging; Step 4: During charging, the current sensor (29) and the temperature sensor (30) transmit the temperature and current rate of the lithium battery (14) to the inside of the detector (28). The detector (28) is used to perform real-time monitoring during the charging process and perform power-off protection operations when abnormal values ​​appear.

Images