High-strength lithium ion battery monomer for automobile

Abstract

The invention provides a high-strength lithium ion battery monomer for an automobile, and relates to the technical field of lithium ion batteries. A battery body is placed in the protective shell, two first conducting strips are installed on the battery body, a cover plate is buckled to the top end face of the protective shell, an auxiliary seat is fixed to the bottom end face of the cover plate and is of a rectangular-ambulatory-plane structure, and the bottom end face of the auxiliary seat makes contact with the top end face of the battery body; the protective shell and the cover plate are each internally and fixedly provided with a pipeline, and the two pipelines are connected with an air conditioner connector on an automobile and are each of a bent pipe structure. In the battery fixing and protecting process, the cover plate is stably connected with the protecting shell through the first fixing assembly. The auxiliary seat is of a rectangular-ambulatory-plane structure and can abut against the battery body to prevent shaking, the contact area between the auxiliary seat and the battery is reduced, and heat dissipation of the battery is guaranteed; and the first fixing screw rod is matched with the auxiliary sleeve, so that the loosening probability of the screw rod is reduced by virtue of the elasticity of the auxiliary sleeve after screwing, and the sealing effect of the cover plate is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium ion batteries, and in particular to a high-strength lithium ion battery monomer for automobiles. Background Art

[0002] Lithium-ion battery is a secondary battery that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. The mutual conversion of electrical energy and chemical energy is achieved through the insertion and deinsertion of lithium ions and the transmission of electrons. Components: usually composed of positive electrode, negative electrode, diaphragm, electrolyte, casing, etc.

[0003] As shown in application number CN201210482283.9, the present invention relates to a lithium-ion battery for automobiles. Currently, there are no lithium-ion batteries for automobiles with a reasonable structural design and stable performance. The present invention comprises a battery core, an upper cover, a positive terminal, a negative terminal, and an outer shell, and is characterized by further comprising a positive conductive metal sheet, a negative conductive metal sheet, a positive cover sheet, a negative cover sheet, a temperature detection protection plate, and a metal isolation groove. The positive terminal comprises a positive terminal body, a positive boss, and a positive temperature test head. The positive conductive metal sheet is fixed to the positive electrode tab of the battery core, and the positive terminal body is fixed to the positive conductive metal sheet. The negative terminal comprises a negative terminal body, a negative boss, and a negative temperature test head. The negative conductive metal sheet is fixed to the negative electrode tab of the battery core, and the negative terminal body is fixed to the negative conductive metal sheet. The wall surface of the outer shell is provided with several rows of heat dissipation holes, and the inner wall of the wall surface of the outer shell provided with heat dissipation holes is provided with several heat conduction grooves. The present invention has a reasonable structural design, good heat dissipation, and stable performance.

[0004] Lithium-ion batteries similar to the above-mentioned applications currently have the following problems: Batteries generate a lot of heat when discharging, and there is currently room for improvement in cooling the lithium battery itself, which cannot be achieved by combining it with the vehicle's air conditioner; the battery's buffering protection effect is poor, which can easily cause battery damage when the vehicle is bumpy, and buffering cannot be achieved through multiple buffer structures. Summary of the Invention

[0005] The present invention relates to a high-strength lithium-ion battery cell for automobiles, which solves the problem that a large amount of heat is generated when the battery is discharged, and there is currently room for improvement in cooling the lithium battery body, and it cannot be combined with an on-board air conditioner to achieve this; the battery buffering protection effect is poor, which can easily cause battery damage when the vehicle is bumpy, and buffering cannot be achieved through multiple buffer structures.

[0006] The present invention provides a high-strength lithium-ion battery cell for automobiles, specifically comprising: a protective shell; a battery body is placed in the protective shell, two first conductive sheets are installed on the battery body, a cover plate is fastened to the top surface of the protective shell, both the protective shell and the cover plate are made of high-hardness steel, an auxiliary seat is fixed to the bottom end surface of the cover plate, the auxiliary seat has a U-shaped structure, and the bottom end surface of the auxiliary seat contacts the top surface of the battery body; a pipe is fixed in each of the protective shell and the cover plate, both pipes are connected to the air conditioning connector on the vehicle, and both pipes have a curved pipe structure.

[0007] Furthermore, a first fixing assembly is installed on the protective shell, and the first fixing assembly consists of a connecting block, a base block, a first fixing screw and an auxiliary sleeve. A connecting block is fixed to the left end face and the right end face of the protective shell; a base block is welded to the left end face and the right end face of the cover plate, and a first fixing screw is plugged into each base block. The two first fixing screws are respectively threadedly connected to the two connecting blocks, and an auxiliary sleeve with an annular structure is welded to the top surface of each base block. The outer contours of the adjustment parts of the two first fixing screws are both circular structures, and the outer walls of the adjustment parts of the two first fixing screws are in elastic contact with the inner walls of the two auxiliary sleeves.

[0008] Furthermore, the connecting block and the base block are both rectangular block structures, and the length of the base block is greater than the length of the connecting block.

[0009] Furthermore, the protective shell is equipped with an electrical connection assembly, which consists of a second contact piece, a terminal, a cable, a protective cover and a second elastic block. Two second contact pieces are fixed on the inner wall of the protective shell, and the two second contact pieces are in contact with the two first conductive pieces. A terminal is welded to the left end face of each second contact piece, and both terminals pass through the protective shell. A cable is fixed to each terminal.

[0010] Furthermore, two protective covers are fixed to the left end face of the protective shell by screws. Both protective covers are rectangular cover structures. The two protective covers respectively cover the outside of the two terminal posts. The two protective covers together form a seal for the terminal posts and cables.

[0011] Furthermore, a second elastic block is adhered to the right end face of each protective cover, and the two second elastic blocks are both made of rubber. The two second elastic blocks are both in a U-shaped structure. When the screws used to fix the protective cover are tightened, the two second elastic blocks are in elastic contact with the cable. At this time, the two second elastic blocks are also in elastic contact with the left end face of the protective shell.

[0012] Furthermore, a second fixing component is installed on the protective shell. The second fixing component consists of a second connection, a second fixing screw, and an adjustment slot. Two second connections are welded to the front and rear end faces of the protective shell respectively. A second fixing screw is inserted into each second connection. The four second fixing screws are all fixed on the vehicle body. The adjustment parts of the two second fixing screws are both hexagonal block structures. An adjustment slot is opened at the adjustment part of each second fixing screw. The two adjustment slots are both hexagonal groove structures.

[0013] Furthermore, the bottom end face of the inner wall of the protective shell is adhesively attached with first elastic blocks in a linear array. The first elastic blocks are strip-shaped structures and are made of rubber. The first elastic blocks adhesively attached in a linear array are all in elastic contact with the bottom end face of the battery body.

[0014] Furthermore, two protective blocks are sleeved outside the protective shell and the cover plate. The two protective blocks are both in a shape of a Chinese character 'hui' and are made of rubber. The two protective blocks are buffer parts for the protective shell and the battery body.

[0015] The present invention provides a high-strength lithium-ion battery monomer for automobiles, which has the following beneficial effects: In terms of battery fixing and protection, the cover plate is firmly connected to the protective shell through the first fixing component. The auxiliary seat is in a shape of a Chinese character 'hui', which can not only tightly press against the battery body to prevent shaking, but also reduce the contact area with the battery, ensuring battery heat dissipation. The cooperation of the first fixing screw and the auxiliary sleeve, after being tightened,借助 the elasticity of the auxiliary sleeve, reduces the probability of the screw loosening and ensures the sealing effect of the cover plate. The special size design of the connecting block and the base block facilitates the disassembly of the cover plate. The setting of the second fixing component enables the protective shell to be firmly fixed on the vehicle body, and the design of the adjustment slot provides convenience for the emergency disassembly of the second fixing screw. In addition, the first elastic blocks on the inner wall of the protective shell and the rubber protective blocks sleeved outside can perform multi-layer elastic buffering on the battery body, effectively reducing the damage caused to the battery by bumps and vibrations during vehicle driving, and prolonging the service life of the battery.

[0016] In terms of heat dissipation function, the bent pipe structure pipes fixed inside the protective shell and the cover plate can be connected to the automobile air conditioner joint. After the cold air of the automobile air conditioner enters the pipes, the bent pipes can increase the contact area with the battery body and the cold air dissipation range, realizing efficient auxiliary cooling, ensuring that the battery works at an appropriate temperature, and improving the battery performance and safety.

[0017] The design of the power connection component is also very comprehensive. The second contact piece has good contact with the first conductive piece of the battery body. The wiring column and the cable realize power transmission. The protective cover and the second elastic block form a sealing structure, which not only realizes the dust and water protection of the wiring column and the cable, but also further improves the sealing performance, effectively preventing the entry of external water vapor, dust, etc., avoiding faults caused by damage to the electrical connection part, and ensuring the stable operation of the battery power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0019] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached figure: Figure 1 The figure shows the axial structural diagram of the high-strength lithium-ion battery cell for automobiles of the present invention; Figure 2 The main structural diagram of the high-strength lithium-ion battery cell for automobiles of the present invention is shown; Figure 3 The present invention is shown Figure 2 A schematic diagram of the enlarged structure at point A; Figure 4 The schematic diagram of the partially cutaway axial structure of a high-strength lithium-ion battery cell for automobiles of the present invention is shown; Figure 5 The present invention is shown Figure 4 A schematic diagram of the axial structure after further sectioning; Figure 6 The present invention is shown Figure 5 A schematic diagram of the enlarged structure at point B; Figure 7 The following is a schematic diagram of the cross-section structure of the cover plate of the present invention; Figure 8 The present invention is shown Figure 7 Enlarged structural diagram at C.

[0021] Reference Signs List 1. Protective shell; 101. Cover plate; 102. Auxiliary seat; 103. First elastic block; 104. Protective block; 2. Pipe; 3. First fixing component; 301. Connecting block; 302. Base block; 303. First fixing screw; 304. Auxiliary sleeve; 4. Battery body; 401. First conductive sheet; 5. Power connection component; 501. Second contact sheet; 502. Terminal; 503. Cable; 504. Protective cover; 505. Second elastic block; 6. Second fixing component; 601. Second connection; 602. Second fixing screw; 603. Adjustment slot. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] Unless otherwise defined, all terms used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this manner in the embodiments of the present invention.

[0024] The terms "first," "second," and similar terms used in the embodiments of the present invention do not indicate any order, quantity, or importance, but are simply used to distinguish different components. Terms such as "a," "an," or "the" do not indicate a limit on quantity, but rather indicate the presence of at least one. Similarly, terms such as "include" or "comprise" mean that the element or object preceding the term encompasses the elements or objects listed after the term, and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper," "lower," "front," "back," "top," "bottom," "vertical," and "horizontal" may be used to describe embodiments of the present invention. However, it should be understood that these terms are used solely to facilitate the description of the embodiments shown in the figures and do not require that the actual device be constructed or operated in a specific orientation. In the following description, terms such as "connect," "couple," "fixed," and "attached" may refer to a direct connection between two elements or structures without any other elements or structures between them, or an indirect connection between two elements or structures through an intermediate element or structure, unless otherwise expressly stated herein.

[0025] Example 1: Please refer to Figures 1 to 8 : The present invention proposes a high-strength lithium-ion battery cell for automobiles, comprising: a protective shell 1; a battery body 4 is placed in the protective shell 1, two first conductive sheets 401 are installed on the battery body 4, a cover plate 101 is buckled on the top surface of the protective shell 1, and the protective shell 1 and the cover plate 101 are both made of high-hardness steel, which can improve the protective strength of the battery body 4 during use, and an auxiliary seat 102 is fixed on the bottom end surface of the cover plate 101. The auxiliary seat 102 is a round-shaped structure, and the bottom end surface of the auxiliary seat 102 contacts the top surface of the battery body 4. After the cover plate 101 is fixed, the battery can be The main body 4 is pressed tightly to prevent the battery body 4 from shaking, and because the auxiliary seat 102 is a U-shaped structure, it can reduce the contact area with the battery body 4, and better ensure the heat dissipation of the battery body 4; a pipe 2 is fixed in the protective shell 1 and the cover plate 101, and the two pipes 2 are connected to the air-conditioning connector on the car. Both pipes 2 are curved pipe structures. During use, after the cold air in the car air-conditioning enters the pipe 2, the cold air emitted by the pipe 2 can achieve auxiliary cooling of the battery body 4, and because the two pipes 2 are curved structures, the cooling effect on the battery body 4 can be improved during use.

[0026] Among them, the protective shell 1 is equipped with a first fixing assembly 3, which is composed of a connecting block 301, a base block 302, a first fixing screw 303 and an auxiliary sleeve 304. A connecting block 301 is fixed to the left and right end faces of the protective shell 1; a base block 302 is welded to the left and right end faces of the cover 101, and each base block 302 is plugged with a first fixing screw 303. The two first fixing screws 303 are respectively threadedly connected to the two connecting blocks 301, and each base block 304 is connected to the left and right end faces of the protective shell 1. 02 The top surface is welded with an auxiliary sleeve 304 of an annular structure, and the outer contours of the adjustment parts of the two first fixing screws 303 are circular structures. The outer walls of the adjustment parts of the two first fixing screws 303 are in elastic contact with the inner walls of the two auxiliary sleeves 304. After the two first fixing screws 303 are tightened, the elastic action of the two auxiliary sleeves 304 can reduce the probability of the two first fixing screws 303 loosening, thereby avoiding the loosening of the two first fixing screws 303 and the reduction of the sealing effect of the cover plate 101.

[0027] Among them, the connecting block 301 and the base block 302 are both rectangular block structures, and the length of the base block 302 is greater than the length of the connecting block 301. When removing the cover 101, unscrew the two first fixing screws 303, and then directly grab the two base blocks 302 and pull them upwards, which facilitates the disassembly of the cover 101.

[0028] Among them, the protective shell 1 is equipped with a power connection component 5, which consists of a second contact piece 501, a terminal 502, a cable 503, a protective cover 504 and a second elastic block 505. Two second contact pieces 501 are fixed on the inner wall of the protective shell 1. The two second contact pieces 501 are in contact with the two first conductive pieces 401. A terminal 502 is welded to the left end face of each second contact piece 501. Both terminals 502 pass through the protective shell 1, and a cable 503 is fixed to each terminal 502.

[0029] Among them, two protective covers 504 are fixed to the left end face of the protective shell 1 by screws. Both protective covers 504 are rectangular cover structures. The two protective covers 504 cover the outside of the two terminal posts 502 respectively. The two protective covers 504 together constitute the sealing of the terminal posts 502 and the cable 503. During use, the protective covers 504 can make the terminal posts 502 and the cable 503 dustproof and waterproof.

[0030] Among them, a second elastic block 505 is adhered to the right end face of each protective cover 504, and the two second elastic blocks 505 are both made of rubber. The two second elastic blocks 505 are both in a U-shaped structure. When the screw used to fix the protective cover 504 is tightened, the two second elastic blocks 505 are in elastic contact with the cable 503. At this time, the two second elastic blocks 505 are also in elastic contact with the left end face of the protective shell 1. During use, the two second elastic blocks 505 can improve the sealing performance of the terminal 502 and the cable 503.

[0031] Among them, a second fixing assembly 6 is installed on the protective shell 1, and the second fixing assembly 6 consists of a second connection 601, a second fixing screw 602 and an adjustment slot 603. Two second connections 601 are welded on the front and rear ends of the protective shell 1, and each second connection 601 is plugged with a second fixing screw 602. The four second fixing screws 602 are fixed to the vehicle body. The adjustment parts of the two second fixing screws 602 are both hexagonal block structures. The adjustment part on each second fixing screw 602 is provided with an adjustment slot 603, and the two adjustment slots 603 are both hexagonal slot structures. When removing the second fixing screw 602, directly clamp the wrench on the second fixing screw 602 and rotate it. When the adjustment part of the second fixing screw 602 is slightly deformed and the wrench cannot be clamped, use the hexagonal handle to insert it into the adjustment slot 603 and rotate it. At this time, emergency disassembly of the second fixing screw 602 can be achieved.

[0032] Among them, the bottom end surface of the inner wall of the protective shell 1 is adhered with a first elastic block 103 in a linear array. The first elastic block 103 is a long strip structure and is made of rubber. The first elastic blocks 103 adhered in a linear array are all in elastic contact with the bottom end surface of the battery body 4. During use, the first elastic block 103 can achieve elastic buffering of the battery body 4, thereby reducing damage to the battery body 4 during vehicle driving.

[0033] Example 2, based on Example 1, Figures 1-8 As shown, two protective blocks 104 are sleeved on the outside of the protective shell 1 and the cover plate 101. Both protective blocks 104 are of a U-shaped structure and are made of rubber. The two protective blocks 104 are buffer parts for the protective shell 1 and the battery body 4. During the driving of the vehicle, the two protective blocks 104 can achieve secondary buffering of the protective shell 1 and the battery body 4, thereby avoiding the shortening of the life of the battery body 4 due to vehicle bumps.

[0034] The working principle of this embodiment is as follows: Place the battery body 4 in the protective shell 1, then cover the cover 101, and screw the two first fixing screws 303 onto the two connecting blocks 301. At this time, the cover 101 is fixed; when connecting the cable 503, the two connecting blocks 301 are respectively locked on the two terminal posts 502 with nuts, and the two protective covers 504 are covered on the two terminal posts 502 and fixed by screws; when fixing the protective shell 1, the four second fixing screws 602 are screwed onto the vehicle body. At this time, the installation of the protective shell 1 on the vehicle is completed; after use, During the process, turn on the vehicle's air conditioning switch. After the cold air in the car's air conditioning enters the pipe 2, the cold air emitted by the pipe 2 can achieve auxiliary cooling of the battery body 4; when removing the cover 101, unscrew the two first fixing screws 303, and then directly grasp the two base blocks 302 and pull them upward; when removing the second fixing screw 602, directly clamp the wrench on the second fixing screw 602 and turn it. When the adjustment part of the second fixing screw 602 is slightly deformed and the wrench cannot be clamped, use the hexagonal handle to insert it into the adjustment slot 603 and turn it.

Claims

1. A high-strength lithium-ion battery cell for automobiles, characterized in that: include: protective shell; The battery body is placed in the protective shell, and two first conductive sheets are installed on the battery body. A cover plate is buckled on the top surface of the protective shell. Both the protective shell and the cover plate are made of high-hardness steel. An auxiliary seat is fixed on the bottom end surface of the cover plate. The auxiliary seat has a U-shaped structure, and the bottom end surface of the auxiliary seat contacts the top surface of the battery body; a pipe is fixed in the protective shell and the cover plate, and both pipes are connected to the air-conditioning connector on the car. Both pipes are curved pipe structures.

2. A high-strength lithium-ion battery cell for automobiles according to claim 1, characterized in that: A first fixing assembly is installed on the protective shell, and the first fixing assembly consists of a connecting block, a base block, a first fixing screw and an auxiliary sleeve. A connecting block is fixed to the left end face and the right end face of the protective shell; a base block is welded to the left end face and the right end face of the cover plate, and a first fixing screw is plugged into each base block. The two first fixing screws are respectively threadedly connected to the two connecting blocks, and an auxiliary sleeve with an annular structure is welded to the top surface of each base block. The outer contours of the adjustment parts of the two first fixing screws are both circular structures, and the outer walls of the adjustment parts of the two first fixing screws are in elastic contact with the inner walls of the two auxiliary sleeves.

3. A high-strength lithium-ion battery cell for automobiles according to claim 2, characterized in that: The connecting block and the base block are both rectangular block structures, and the length of the base block is greater than that of the connecting block.

4. A high-strength lithium-ion battery cell for automobiles according to claim 3, characterized in that: The protective shell is equipped with an electrical connection assembly, which consists of a second contact piece, a terminal, a cable, a protective cover and a second elastic block. Two second contact pieces are fixed on the inner wall of the protective shell, and the two second contact pieces are in contact with the two first conductive pieces. A terminal is welded to the left end face of each second contact piece. Both terminals pass through the protective shell, and a cable is fixed to each terminal.

5. A high-strength lithium-ion battery cell for automobiles according to claim 4, characterized in that: The left end face of the protective shell is fixed with two protective covers by screws. Both protective covers are rectangular cover-shaped structures. The two protective covers respectively cover the outsides of the two terminal posts. The two protective covers together form a seal between the terminal posts and the cable.

6. A high-strength lithium-ion battery cell for automobiles according to claim 5, characterized in that: A second elastic block is adhered to the right end face of each protective cover. The two second elastic blocks are made of rubber and have a U-shaped structure. When the screws for fixing the protective cover are tightened, the two second elastic blocks are in elastic contact with the cable. At this time, the two second elastic blocks are also in elastic contact with the left end face of the protective shell.

7. A high-strength lithium-ion battery cell for automobiles according to claim 6, characterized in that: A second fixing assembly is installed on the protective shell, and the second fixing assembly consists of a second connection, a second fixing screw and an adjustment slot. Two second connections are welded on the front end and the rear end of the protective shell, and each second connection is plugged into a second fixing screw. The four second fixing screws are all fixed to the vehicle body. The adjustment parts of the two second fixing screws are both hexagonal block structures, and the adjustment part on each second fixing screw is provided with an adjustment slot, and both adjustment slots are hexagonal slot structures.

8. The high-strength lithium-ion battery cell for automobiles according to claim 7, characterized in that: The bottom end surface of the inner wall of the protective shell is adhered with a first elastic block in a linear array. The first elastic block is a long strip structure and is made of rubber. The first elastic blocks adhered in a linear array are in elastic contact with the bottom end surface of the battery body.

9. The high-strength lithium-ion battery cell for automobiles according to claim 8, characterized in that: Two protective blocks are sleeved on the outside of the protective shell and the cover plate. Both protective blocks are in a Chinese-shaped structure and are made of rubber. The two protective blocks serve as buffer parts for the protective shell and the battery body.

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