A quick-charging high-rate lithium ion battery with a shockproof structure

Abstract

The application discloses a quick-charging high-rate lithium ion battery with a shockproof structure, which comprises a box body, a battery assembly is bonded in the box body by means of glue, the battery assembly comprises a base plate, a battery body is arranged on the outer wall of the bottom of the base plate, a base is integrally formed on both sides of the outer wall of the top of the base plate, a fixing seat is arranged on one side of the outer wall of the top of the base plate, and pole tab ends which respectively extend into the base and the fixing seat are arranged on both sides of the top of the battery body; a box cover is clamped at the top end of the box body, the box cover comprises a cover body, and a sliding groove is formed in both sides of the outer wall of the top of the cover body; the connecting piece, the pole tab end and the sliding groove are designed, when an electric vehicle is running, the electrode column will squeeze the folding pieces on both sides back and forth due to the vibration of the vehicle, the electrode column slides in the sliding groove through the sliding block, thereby effectively reducing the vibration, and the problem that the electrode column is damaged or fails due to the vibration is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of lithium-ion battery technology, and specifically to a fast-charging high-rate lithium-ion battery with a shock-resistant structure. Background Technology

[0002] Lithium-ion batteries are currently the most widely used energy source. Most lithium-ion batteries on the market take into account the battery's rapid discharge performance, i.e., high-rate discharge performance. With the continuous advancement of technology, lithium-ion batteries have been widely used in various fields of civilian and military applications, such as handheld power tools, drones, car jump starters, and electric vehicles.

[0003] For example, patent application CN201710577789.0, published on January 22, 2019, discloses a fast-charging high-rate lithium-ion battery and its preparation method. It uses a stacking process and includes positive and negative tabs, a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte. The positive electrode sheet is composed of lithium cobalt oxide, PVDF, and a composite conductive agent; the negative electrode sheet is composed of graphite, a conductive agent, and an aqueous binder; the separator is a wet-process separator; and the electrolyte consists of LIPF, a solvent, and additives. This fast-charging high-rate lithium-ion battery features fast charging and high output power, meeting the requirements of 5C charging rate, 35C continuous discharge rate, and high-power load performance of 100C / 4S. It is suitable for electrical appliances requiring both fast charging and fast discharging, such as handheld power tools, drones, and car jump starters.

[0004] Lithium-ion batteries used in electric vehicles generally employ large square cells. However, the cells in these batteries are typically connected to the positive and negative terminals using welding. During vehicle operation, the car experiences continuous vibrations, which also affect the battery. This welding method can lead to the cells and terminals becoming loose and detaching, posing a potential safety hazard and reducing the product's lifespan. Therefore, there is an urgent need to design a fast-charging, high-rate lithium-ion battery with a shock-resistant structure to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a fast-charging high-rate lithium-ion battery with a shock-resistant structure to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A fast-charging high-rate lithium-ion battery with a shock-resistant structure includes a housing component. A battery assembly is glued inside the housing component. The battery assembly includes a substrate. A battery body is disposed on the bottom outer wall of the substrate. Bases are integrally formed on both sides of the top outer wall of the substrate. A fixing seat is disposed on one side of the top outer wall of the substrate. A tab end is disposed on both sides of the top of the battery body, respectively extending into the base and the fixing seat. A housing cover is snapped onto the top of the housing component. The housing cover includes a cover body. Sliding grooves are formed on both sides of the top outer wall of the cover body, and connectors are slidably connected inside the sliding grooves. The connectors include electrode posts. Folded pieces are welded to the outer walls of both sides of the electrode posts near the bottom, and the folded pieces are electrically connected to the tab ends.

[0007] Furthermore, the electrode post is externally threaded with a slider, which is slidably connected inside the groove.

[0008] Furthermore, curtains are adhered to both outer walls of the slider, and the other end of the curtains is glued to the inner wall of one side of the slide groove.

[0009] Furthermore, a protective shell is bolted to one side of the top outer wall of the substrate, and one end of the protective shell is snapped onto the fixing base.

[0010] Furthermore, a circuit board located inside the protective shell is bolted to one side of the top outer wall of the substrate, and a signal module and a control module are respectively welded to both sides of the top outer wall of the circuit board.

[0011] Furthermore, a detection module is welded to one side of the top outer wall of the substrate, and the detection module is electrically connected to two tabs inside the fixing base via wires.

[0012] Furthermore, the box component includes a box body, the top of which is integrally formed with a boss, and two connecting pipes arranged in an upper and lower structure are inserted into the outer wall of one side of the box body.

[0013] Furthermore, a refrigeration component is bolted to one side of the outer wall of the housing. The refrigeration component includes a housing, and a pump body is bolted to one side of the bottom inner wall of the housing. One end of one of the connecting pipes is inserted into the water outlet of the pump body.

[0014] Furthermore, a storage box is placed inside the housing, and the storage box stores coolant. A cooler is embedded in one side of the outer wall of the storage box by bolts, and multiple heat-conducting fins located inside the storage box are welded to one side of the outer wall of the cooler. A fan is installed on one side of the outer wall of the cooler by bolts.

[0015] Furthermore, a ventilation groove is provided on one side of the outer wall of the housing near the top, and a dustproof net is adhered inside the ventilation groove.

[0016] In the above technical solutions, the present invention provides a fast-charging high-rate lithium-ion battery with a shock-resistant structure. (1) The connector, electrode end, and slide groove designed in the present invention, when the electric vehicle is running, the electrode post will press back and forth on both sides due to the vibration of the car, so that the electrode post slides in the slide groove through the slider, thereby effectively reducing the vibration and effectively avoiding the problem of electrode post damage or failure due to vibration; (2) The detection module designed in the present invention is composed of a voltage detection chip and a current detection chip, which can detect the voltage and current of the power output from the electrode end, and then detect the voltage and current of the power input from the electrode end. The test results will be transmitted to the car's interior center console via the signal module so that the driver can understand whether the on-board lithium battery power supply is stable; (3) When the battery component is powered, the pump, cooler and fan will start simultaneously, so that the coolant inside the storage box that is cooled by the cooler, fan and heat-conducting fins flows into the connecting pipe through the action of the pump, and through another connecting pipe, the coolant inside the storage box and the box will circulate, thus achieving the purpose of rapid heat dissipation of the battery component, and at the same time, it can keep the battery component inside the box in a low temperature range. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of a fast-charging high-rate lithium-ion battery with a shock-resistant structure according to the present invention.

[0019] Figure 2 This is a schematic diagram of the casing and battery assembly structure provided in an embodiment of a fast-charging high-rate lithium-ion battery with a shock-resistant structure according to the present invention.

[0020] Figure 3 This is a schematic diagram of the casing structure provided in an embodiment of a fast-charging high-rate lithium-ion battery with a shock-resistant structure according to the present invention.

[0021] Figure 4 This is a schematic diagram of the cover structure provided in an embodiment of a fast-charging high-rate lithium-ion battery with a shock-resistant structure according to the present invention.

[0022] Figure 5 This is a schematic diagram of the connector structure provided in an embodiment of a fast-charging high-rate lithium-ion battery with a shock-resistant structure according to the present invention.

[0023] Figure 6This is a side view of the cooling component provided in an embodiment of a fast-charging high-rate lithium-ion battery with a shock-resistant structure according to the present invention.

[0024] Figure 7 This is a schematic diagram of the battery assembly structure provided in an embodiment of a fast-charging high-rate lithium-ion battery with a shock-resistant structure according to the present invention.

[0025] Explanation of reference numerals in the attached figures: 1. Enclosure; 2. Refrigeration assembly; 3. Enclosure cover; 4. Battery assembly; 5. Enclosure; 6. Connecting pipe; 7. Boss; 8. Shell; 9. Storage box; 10. Heat-conducting fins; 11. Pump body; 12. Refrigerator; 13. Fan; 14. Ventilation slot; 15. Dustproof net; 16. Cover; 17. Slide rail; 18. Connector; 19. Curtain; 20. Slider; 21. Electrode post; 22. Folding plate; 23. Substrate; 24. Battery body; 25. Base; 26. Electrode end; 27. Fixing base; 28. Protective shell; 29. ​​Circuit board; 30. Signal module; 31. Control module; 32. Detection module. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-7 As shown in the figure, the fast-charging high-rate lithium-ion battery with shockproof structure provided by the present invention includes a housing 1. A battery assembly 4 is glued inside the housing 1. The battery assembly 4 includes a substrate 23. A battery body 24 is disposed on the bottom outer wall of the substrate 23. A base 25 is integrally formed on both sides of the top outer wall of the substrate 23. A fixing seat 27 is disposed on one side of the top outer wall of the substrate 23. A tab end 26 is disposed on both sides of the top of the battery body 24, which extends into the base 25 and the fixing seat 27 respectively. A housing cover 3 is snapped onto the top of the housing 1. The housing cover 3 includes a cover body 16. A sliding groove 17 is opened on both sides of the top outer wall of the cover body 16. A connector 18 is slidably connected inside the sliding groove 17. The connector 18 includes an electrode post 21. Folding pieces 22 are welded to the outer walls of both sides of the electrode post 21 near the bottom. The folding pieces 22 are electrically connected to the tab end 26.

[0028] Specifically, in this embodiment, the device includes a housing 1, inside which a battery assembly 4 is glued. The battery assembly 4 includes a substrate 23, a battery body 24 disposed on the bottom outer wall of the substrate 23, and bases 25 integrally formed on both sides of the top outer wall of the substrate 23. A fixing seat 27 is disposed on one side of the top outer wall of the substrate 23. Both sides of the top of the battery body 24 are provided with tabs 26 that extend into the bases 25 and fixing seats 27 respectively. The tabs 26 are connected to the battery cells inside the battery body 24. A cover 3 is snapped onto the top of the housing 1. The cover 3 includes a cover body 16, which, in conjunction with the housing 1, improves the protection of the battery assembly 4. The top outer wall of the cover body 16... Both sides are provided with sliding grooves 17, and a connector 18 is slidably connected inside the sliding grooves 17. The connector 18 includes an electrode post 21, which is made of metal. Folded pieces 22 are welded to the outer walls of both sides of the electrode post 21 near the bottom. The folded pieces 22 are made of elastic metal sheets folded together, which can connect the electrode post 21 to the tab end 26. When the electric vehicle is running, the electrode post 21 will press the folded pieces 22 on both sides back and forth due to the vibration of the vehicle, so that the electrode post 21 slides inside the sliding groove 17 through the slider 20, thereby effectively reducing vibration and effectively avoiding the problem of the electrode post 21 being damaged or malfunctioning due to vibration. The folded pieces 22 are electrically connected to the tab end 26.

[0029] The present invention provides a fast-charging high-rate lithium-ion battery with a shock-resistant structure. When the electric vehicle is running, the electrode post 21 will press back and forth against the folded pieces 22 on both sides due to the vibration of the vehicle. This causes the electrode post 21 to slide inside the slide groove 17 through the slider 20, thereby effectively reducing the vibration and effectively avoiding the problem of the electrode post 21 being damaged or malfunctioning due to vibration.

[0030] In one embodiment provided by the present invention, such as Figure 4-5 The electrode post 21 is externally threaded with a slider 20, which facilitates the sliding of the electrode post 21 inside the slide groove 17. The slider 20 is slidably connected inside the slide groove 17. Curtains 19 are glued to both outer walls of the slider 20. The curtains 19 can improve the dustproof capability of the slide groove 17, and the other end of the curtains 19 is glued to the inner wall of one side of the slide groove 17.

[0031] In another embodiment provided by the present invention, such as Figure 7As shown, a protective shell 28 is bolted to one side of the top outer wall of the substrate 23. The protective shell 28 is used to protect the electrical components on the circuit board 29, and one end of the protective shell 28 is snapped onto the fixing base 27. The circuit board 29 located inside the protective shell 28 is bolted to one side of the top outer wall of the substrate 23. The circuit board 29 is mainly used as a carrier for electronic components, and a signal module 30 and a control module 31 are respectively soldered to the two sides of the top outer wall of the circuit board 29. The signal module 30 is Bluetooth, and the control module 31 is a micro-hole chip. A detection module 32 is soldered to one side of the top outer wall of the substrate 23. The detection module 32, composed of a voltage detection chip and a current detection chip, can detect the voltage and current of the power output from the tab 26. The detection results are then transmitted to the center console inside the car via the signal module 30, so that the driver can understand whether the power supply of the vehicle lithium battery is stable. At the same time, the control module 31 adjusts the current and voltage output of the battery body 24 according to the detection results and the data transmitted from the center console, and controls the battery body 24 to disconnect or connect. The detection module 32 is electrically connected to the two tabs 26 inside the mounting bracket 27 via wires.

[0032] In another embodiment provided by the present invention, such as Figure 3 As shown, the housing component 1 includes a housing 5. The top of the housing 5 is integrally formed with a boss 7, which facilitates the battery assembly 4 to be snapped onto the housing component 1. Two connecting pipes 6 are inserted into the outer wall of one side of the housing 5 in an upper and lower structure.

[0033] In another embodiment provided by the present invention, such as Figure 1 and Figure 6As shown, a cooling assembly 2 is bolted to one side of the outer wall of the housing 1. The cooling assembly 2 includes a housing 8. A pump body 11, a miniature water pump, is bolted to one side of the bottom inner wall of the housing 8. The coolant inside the storage box 9, cooled by the cooler 12, fan 13, and heat-conducting fins 10, flows into the connecting pipe 6 through the pump body 11. The coolant in the storage box 9 circulates with the coolant inside the housing 5 through another connecting pipe 6, achieving rapid heat dissipation of the battery assembly 4. One end of one connecting pipe 6 is inserted into the outlet of the pump body 11. The storage box 9 is placed inside the housing 8, and the storage box 9 stores coolant. A cooler 12 is embedded in one side of the outer wall of the storage box 9 by bolts, and multiple heat-conducting fins 10 located inside the storage box 9 are welded to the outer wall of one side of the cooler 12. A fan 13 is installed in one side of the outer wall of the cooler 12 by bolts. The fan 13 is a miniature axial flow cooling fan. Together with the cooler 12 and the heat-conducting fins 10, it can form a semiconductor cooling device, which can cool down the coolant inside the storage box 9. A ventilation slot 14 is opened on one side of the outer wall of the shell 8 near the top. The ventilation slot 14 facilitates the exchange of air between the storage box 9 and the outside. A dustproof net 15 is adhered inside the ventilation slot 14. The dustproof net 15 can prevent dust from entering the storage box 9 through the ventilation slot 14.

[0034] Working principle: When powered by the lithium battery, the battery body 24 conducts current through the tab 26 to the connector 18, and then to the wire connected to the connector 18. This process is monitored by a detection module 32, composed of a voltage detection chip and a current detection chip, which detects the voltage and current of the power output from the tab 26. The detection results are transmitted to the vehicle's central control panel via a signal module 30, allowing the driver to monitor the stability of the lithium battery power supply. Simultaneously, the control module 31 adjusts the current and voltage output from the battery body 24 based on the detection results and data transmitted from the central control panel, and controls the battery body 24 to disconnect or connect. Furthermore, when the battery pack 4 is powered... Pump 11, cooler 12 and fan 13 will start synchronously, so that the coolant inside the storage box 9, which has been cooled by cooler 12, fan 13 and heat-conducting fins 10, flows into connecting pipe 6 through pump 11. And through another connecting pipe 6, the coolant inside the storage box 9 and the box 5 will circulate, achieving the purpose of rapid heat dissipation of battery pack 4. At the same time, it can keep the battery pack 4 inside the box 5 in a low temperature range. When the electric vehicle is running, the vibration of the vehicle will cause the electrode post 21 to press back and forth against the folded pieces 22 on both sides, so that the electrode post 21 slides in the slide groove 17 through the slider 20, thereby effectively reducing vibration and effectively avoiding the problem of electrode post 21 being damaged or malfunctioning due to vibration.

[0035] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fast-charging high-rate lithium-ion battery with a shock-resistant structure, comprising a housing (1), characterized in that: The battery assembly (4) is glued to the inside of the housing (1). The battery assembly (4) includes a substrate (23). A battery body (24) is disposed on the bottom outer wall of the substrate (23). A base (25) is integrally formed on both sides of the top outer wall of the substrate (23). A fixing seat (27) is disposed on one side of the top outer wall of the substrate (23). A tab is disposed on both sides of the top of the battery body (24) and extends into the base (25) and fixing seat (27) respectively. End (26), the top of the box body (1) is snapped with a box cover (3), the box cover (3) includes a cover body (16), the top outer wall of the cover body (16) is provided with a sliding groove (17) on both sides, and a connector (18) is slidably connected inside the sliding groove (17), the connector (18) includes an electrode post (21), the outer walls on both sides of the electrode post (21) are welded with folding pieces (22) near the bottom, and the folding pieces (22) are electrically connected to the tab end (26).

2. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 1, characterized in that, The electrode post (21) is externally threaded with a slider (20), and the slider (20) is slidably connected inside the groove (17).

3. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 2, characterized in that, The slider (20) has a curtain (19) glued to both outer walls, and the other end of the curtain (19) is glued to the inner wall of the slide groove (17) by glue.

4. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 1, characterized in that, A protective shell (28) is bolted to one side of the top outer wall of the substrate (23), and one end of the protective shell (28) is snapped onto the fixing seat (27).

5. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 4, characterized in that, The circuit board (29) located inside the protective shell (28) is bolted to one side of the top outer wall of the substrate (23), and a signal module (30) and a control module (31) are respectively welded to the two sides of the top outer wall of the circuit board (29).

6. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 5, characterized in that, A detection module (32) is welded to one side of the top outer wall of the substrate (23), and the detection module (32) is electrically connected to the two tabs (26) inside the fixing seat (27) through wires.

7. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 1, characterized in that, The box component (1) includes a box body (5), the top of the box body (5) is integrally formed with a boss (7), and two connecting pipes (6) are inserted into the outer wall of one side of the box body (5) in an upper and lower structure.

8. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 7, characterized in that, A refrigeration assembly (2) is bolted to one side of the outer wall of the housing (1). The refrigeration assembly (2) includes a housing (8). A pump body (11) is bolted to one side of the bottom inner wall of the housing (8). One end of the connecting pipe (6) is inserted into the water outlet of the pump body (11).

9. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 8, characterized in that, The housing (8) contains a storage box (9) and coolant. A cooler (12) is embedded in one side of the outer wall of the storage box (9) by bolts. Multiple heat-conducting fins (10) located inside the storage box (9) are welded to one side of the outer wall of the cooler (12). A fan (13) is installed on one side of the outer wall of the cooler (12) by bolts.

10. A fast-charging high-rate lithium-ion battery with a shock-resistant structure according to claim 8, characterized in that, A ventilation slot (14) is provided on one side of the outer wall of the housing (8) near the top, and a dustproof net (15) is attached inside the ventilation slot (14).

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