Anti-overcharge high-magnification polymer lithium battery
By introducing heat dissipation and buffering mechanisms into high-rate polymer lithium batteries, the problems of heat accumulation and collision during battery charging are solved, achieving efficient heat dissipation and protection, and preventing overcharging reactions and damage.
Patent Information
- Application Number
- CN202422609269.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-29
AI Technical Summary
High-rate polymer lithium batteries generate heat from the internal current during prolonged charging, which can lead to overcharging.
The design incorporates heat dissipation and buffer mechanisms, including components such as a honeycomb flow guide, graphene sheet, branch heat sink, mechanical pump, liquid storage bag, and buffer leaf spring, to achieve effective heat dissipation and buffer protection for high-rate polymer lithium batteries.
It effectively prevents high-rate polymer lithium batteries from overcharging due to high temperatures by rapidly dissipating heat through a heat dissipation mechanism and a buffer mechanism to prevent collision damage, ensuring battery safety and reliability.
Smart Images
Figure CN223501968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-rate polymer lithium battery technology, specifically to a high-rate polymer lithium battery that is protected against overcharging. Background Technology
[0002] With the development of green energy, batteries have become one of the most widely used energy sources in daily life. Among different types of batteries, high-rate polymer lithium batteries have become the main product in daily life. High-rate polymer lithium batteries mainly rely on the movement of lithium ions between the positive and negative electrodes to work. During charging and discharging, lithium ions are inserted and extracted back and forth between the two electrodes. High-rate polymer lithium batteries are mainly used in the power systems of electric vehicles, various model airplanes and remote control model cars that require explosive power. High-rate polymer lithium batteries that are protected against overcharging can always maintain a continuous charging state of 9V and 1A.
[0003] The aforementioned and existing related equipment often have the following drawbacks: High-rate polymer lithium batteries are high-energy batteries. When high-rate polymer lithium batteries are being charged, the current generated inside the battery is also very large due to the high wattage of the charge. When charging for a long time, as can be seen from the physical formula Q=I*I*R*t, the current inside the high-rate polymer lithium battery will generate heat, which will cause the high-rate polymer lithium battery to overheat. When the high-rate polymer lithium battery overheats, it may cause an overcharge reaction due to the high temperature. Utility Model Content
[0004] This invention provides a high-rate polymer lithium battery that is protected against overcharging, in order to solve the problem that when existing high-rate polymer lithium batteries are charged for a long time, the internal current will generate heat, which will cause the high-rate polymer lithium battery to overheat. When the high-rate polymer lithium battery overheats, it may cause an overcharge reaction due to the high temperature.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a high-rate polymer lithium battery with overcharge protection, including a protective shell, a high-rate polymer lithium battery installed inside the protective shell, a heat dissipation mechanism provided on one side surface of the protective shell, and a buffer mechanism provided on the inner side of the protective shell.
[0006] Furthermore, the heat dissipation mechanism includes a honeycomb heat exchanger, the outer surface of which is covered with a graphene sheet, one end of which is fixedly connected to a Tesla valve, and the other end of which is fixedly connected to a branch-pipe heat exchanger.
[0007] The above technical solution can provide phase change heat dissipation for high-rate polymer lithium batteries, allowing the coolant inside the heat dissipation mechanism to switch between gas-liquid and liquid phases.
[0008] Furthermore, a mechanical pump is fixedly connected to one end of the branch radiator, a liquid storage bag is fixedly connected between the branch radiator and the mechanical pump, a pressure sensor is fixedly connected to the outlet end of the liquid storage bag, and the other end of the Tesla valve is fixedly connected to the mechanical pump.
[0009] The above technical solution enables the coolant inside the heat dissipation mechanism to circulate and prevents excessive internal pressure.
[0010] Furthermore, the outlet of the liquid storage bag is connected between the radiator and the mechanical pump via a pressure sensor.
[0011] The above technical solution can detect the internal pressure of the device and make accurate adjustments to the pressure.
[0012] Furthermore, the buffer mechanism includes a leaf spring, and a square groove is formed on the inner surface of the protective shell, with the leaf spring fixedly connected to the inner surface of the square groove.
[0013] The above technical solution enables high-rate polymer lithium batteries to have a buffering force when moving, preventing damage to the high-rate polymer lithium batteries due to excessive impact.
[0014] Furthermore, the inside of the square groove is rotatably connected to a locking block, which is rotatably connected to the protective shell via a rotating column.
[0015] The above technical solution enables the rapid installation and removal of high-rate polymer lithium batteries from their protective casings.
[0016] Furthermore, a through hole is provided on the inner surface of the square groove, and a pulling post is welded to the outer surface of the block. The pulling post and the through hole are connected to the block through the groove.
[0017] Using the above technical solution, the pull column can be pulled open from the outside.
[0018] Furthermore, a spring is fitted on the outer surface of the card block, the spring is initially in a stretched state, and a limiting piece is fixedly connected to the outer surface of the card block.
[0019] Through the above technical solution, the spring can hold the locking block in place, allowing the locking block to firmly hold the high-rate polymer lithium battery, and the limiting piece can prevent the locking block from detaching from the protective shell.
[0020] This utility model has the following beneficial effects:
[0021] This invention, through the setting of graphene sheets, honeycomb flow guides, and branch heat sinks in the heat dissipation mechanism, can transfer the heat generated by the battery to the heat dissipation mechanism when charging a high-rate polymer lithium battery. Then, the heat dissipation mechanism dissipates the heat through a phase change, thereby preventing the high-rate polymer lithium battery from being overcharged due to high temperature.
[0022] This invention, through the setting of components such as leaf springs in the buffer mechanism, allows the leaf springs to buffer the high-rate polymer lithium battery when it is impacted, dissipating the force of the external impact and preventing the high-rate polymer lithium battery from being damaged by the impact. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the planar structure of the heat dissipation mechanism of this utility model;
[0025] Figure 3 This is a schematic diagram of the honeycomb flow guide structure of this utility model;
[0026] Figure 4 This is a schematic diagram of the planar structure of the Tesla valve of this utility model;
[0027] Figure 5 This is a cross-sectional view of the radiator with split-pipe design of this utility model;
[0028] Figure 6 This is a schematic diagram of the structure of some parts of the buffer mechanism of this utility model;
[0029] Figure 7 This is a schematic diagram of the leaf spring structure of this utility model;
[0030] Figure 8 This is a utility model Figure 6 Schematic diagram of the structure at point A in the middle.
[0031] Explanation of reference numerals in the attached drawings: 1. Protective casing; 2. High-rate polymer lithium battery; 3. Heat dissipation mechanism; 31. Honeycomb diffuser; 32. Graphene sheet; 33. Tesla valve; 34. Branch radiator; 35. Mechanical pump; 36. Liquid storage bag; 37. Pressure sensor; 4. Buffer mechanism; 41. Square groove; 42. Leaf spring; 43. Locking block; 44. Rotating column; 45. Through hole; 46. Pulling column; 47. Spring; 48. Limiting piece. Detailed Implementation
[0032] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein.
[0033] like Figure 1 As shown, an embodiment of this utility model provides a high-rate polymer lithium battery with overcharge protection, including a protective shell 1, a high-rate polymer lithium battery 2 installed inside the protective shell 1, a heat dissipation mechanism 3 provided on one side surface of the protective shell 1, and a buffer mechanism 4 provided on the inner side of the protective shell 1.
[0034] The high-rate polymer lithium battery 2 is installed inside the protective shell 1. The installation of the high-rate polymer lithium battery 2 is carried out by the buffer mechanism 4. The buffer mechanism 4 is used to install and fix the high-rate polymer lithium battery 2. After installation and fixation, it plays a buffer protection role for the high-rate polymer lithium battery 2. When the high-rate polymer lithium battery 2 is charging, the heat dissipation mechanism 3 can dissipate heat from the high-rate polymer lithium battery 2 to prevent the high-rate polymer lithium battery 2 from overcharging due to high temperature.
[0035] like Figures 2 to 5 The heat dissipation mechanism 3 includes a honeycomb heat exchanger 31, the outer surface of which is covered with a graphene sheet 32. One end of the honeycomb heat exchanger 31 is fixedly connected to a Tesla valve 33, and the other end is fixedly connected to a branch heat exchanger 34. The graphene sheet 32 has extremely high thermal conductivity and heat dissipation. The graphene sheet 32 is tightly attached to the high-rate polymer lithium battery 2 to absorb heat, dissipate some of it, and transfer the rest to the honeycomb heat exchanger 31. The honeycomb heat exchanger 31 has a function to disrupt the attached gas film near the wall of the microchannel, so as to achieve timely liquid replenishment to maintain the evaporation of the thin liquid film. It can prevent the bubbles of coolant evaporation from wrapping around the sidewall and affecting the flow. The gas and liquid formed inside the honeycomb heat exchanger 31 flow into the branch heat exchanger 34. The branch heat exchanger 34 transforms from a large pipe into many small pipes, and then from small pipes back into a large pipe. The small pipes absorb heat and dissipate it through the heat sink, and the gas and liquid are transformed into liquid.
[0036] like Figure 2 As shown, a mechanical pump 35 is fixedly connected to one end of the branch radiator 34, and a liquid storage bag 36 is fixedly connected between the branch radiator 34 and the mechanical pump 35. A pressure sensor 37 is fixedly connected to the outlet end of the liquid storage bag 36, and the other end of the Tesla valve 33 is fixedly connected to the mechanical pump 35. The branch radiator 34 converts gas and liquid into liquid, which is then circulated by the mechanical pump 35. The liquid storage bag 36 can store coolant, and the liquid pressure inside the liquid storage bag 36 can be regulated by the pressure sensor 37.
[0037] like Figure 2As shown, the outlet of the liquid storage bag 36 is connected between the radiator 34 and the mechanical pump 35 via a pressure sensor 37; the liquid storage bag 36 and the pressure sensor 37 work together to alleviate the pressure value of the entire device.
[0038] In this embodiment of the invention, the graphene sheet 32 is first tightly attached to the outside of the high-rate polymer lithium battery 2 to absorb all the heat generated by the high-rate polymer lithium battery 2. Then, part of the heat is dissipated, and the other part is transferred to the honeycomb guide 31. The honeycomb guide 31 can destroy the attached gas film near the wall of the microchannel, which can prevent the bubbles of coolant evaporation from wrapping around the sidewall and affecting the entire gas-liquid conversion and flow. The gas-liquid conversion of the liquid inside the honeycomb guide 31 flows into the branch radiator 34. Inside the branch radiator 34, a large pipe is converted into many small pipes, and then the small pipes are converted back into large pipes. The small pipes absorb heat over a large area, and then the heat is dissipated by the heat sink on the branch radiator 34. At this time, the gas-liquid is converted into liquid. The liquid is then circulated by the mechanical pump 35. The coolant can be stored inside the liquid storage bag 36. The liquid pressure inside the liquid storage bag 36 can be regulated by the pressure sensor 37.
[0039] like Figures 6 to 7 As shown, the buffer mechanism 4 includes a leaf spring 42. A square groove 41 is formed on the inner surface of the protective shell 1, and the leaf spring 42 is fixedly connected to the inner surface of the square groove 41. The leaf spring 42 fixedly connected inside the square groove 41 can buffer the high-rate polymer lithium battery 2.
[0040] like Figure 6 As shown, a locking block 43 is rotatably connected inside the square groove 41. The locking block 43 is rotatably connected to the protective shell 1 via a rotating column 44. The locking block 43 can rotate on the protective shell 1 via the rotating column 44, allowing it to rotate at different angles.
[0041] like Figure 6 and Figure 8 As shown, a through hole 45 is provided on the inner surface of the square groove 41, and a pulling post 46 is welded to the outer surface of the locking block 43. The pulling post 46 is connected to the through hole 45. The pulling post 46 is welded to the locking block 43 through the through hole 45, and the locking block 43 can be opened by pulling the post 46.
[0042] like Figure 6 and Figure 8 As shown, a spring 47 is fitted on the outer surface of the locking block 43. The spring 47 is initially in an extended state, and a limiting piece 48 is fixedly connected to the outer surface of the locking block 43. When the spring 47 fitted on the outside of the locking block 43 is in an extended state, it can hold the locking block 43 in place, keeping the locking block 43 at a certain angle. The limiting piece 48 can prevent the pulling post 46 from detaching from the protective shell 1.
[0043] The square groove 41 is fixedly connected inside and can buffer the high-rate polymer lithium battery 2. The locking block 43 on the protective shell 1 can rotate at different angles via the rotating column 44. The pulling column 46 is welded to the through hole 45. By opening the locking block 43, the spring 47 on the outside of the locking block 43 is in an extended state, which can hold the locking block 43 at a certain angle and prevent the pulling column 46 from coming off the protective shell 1.
[0044] In this embodiment of the utility model, firstly, the pulling column 46 is pulled, and then the pulling column 46 will drive the locking block 43, and then the high-rate polymer lithium battery 2 will slide to the inside of the protective shell 1. Then, the pulling column 46 is released, at which time the spring 47 will rebound and return to its original position through the limiting piece 48, locking the high-rate polymer lithium battery 2. When the high-rate polymer lithium battery 2 is impacted, the leaf spring 42 can dissipate the force of the external impact and provide buffer protection for the high-rate polymer lithium battery 2.
[0045] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A high-rate polymer lithium battery with overcharge protection, characterized in that, Includes a protective shell (1), inside which a high-rate polymer lithium battery (2) is installed, a heat dissipation mechanism (3) is provided on one side surface of the protective shell (1), and a buffer mechanism (4) is provided on the inner side of the protective shell (1).
2. The high-rate polymer lithium battery with overcharge protection according to claim 1, characterized in that, The heat dissipation mechanism (3) includes a honeycomb flow guide (31), the outer surface of which is covered with a graphene sheet (32), one end of which is fixedly connected to a Tesla valve (33), and the other end of which is fixedly connected to a branch heat sink (34).
3. The high-rate polymer lithium battery with overcharge protection according to claim 2, characterized in that, One end of the branch radiator (34) is fixedly connected to a mechanical pump (35), a liquid storage bag (36) is fixedly connected between the branch radiator (34) and the mechanical pump (35), a pressure sensor (37) is fixedly connected to the outlet end of the liquid storage bag (36), and the other end of the Tesla valve (33) is fixedly connected to the mechanical pump (35).
4. The high-rate polymer lithium battery with overcharge protection according to claim 3, characterized in that, The outlet of the liquid storage bag (36) is connected between the branch radiator (34) and the mechanical pump (35) via a pressure sensor (37).
5. A high-rate polymer lithium battery with overcharge protection according to claim 1, characterized in that, The buffer mechanism (4) includes a leaf spring (42), and a square groove (41) is provided on the inner surface of the protective shell (1). The leaf spring (42) is fixedly connected to the inner surface of the square groove (41).
6. A high-rate polymer lithium battery with overcharge protection according to claim 5, characterized in that, The square groove (41) is rotatably connected to a locking block (43), which is rotatably connected to the protective shell (1) via a rotating column (44).
7. A high-rate polymer lithium battery with overcharge protection according to claim 6, characterized in that, The inner surface of the square groove (41) is provided with a through hole (45), and the outer surface of the locking block (43) is welded with a pulling post (46), which is connected to the through hole (45).
8. A high-rate polymer lithium battery with overcharge protection according to claim 7, characterized in that, The outer surface of the card block (43) is fitted with a spring (47), which is initially in a stretched state. A limiting piece (48) is fixedly connected to the outer surface of the card block (43).