Anti-interference lithium battery for electric vehicle

Abstract

The utility model discloses a kind of anti-interference lithium batteries for electric vehicles, belong to lithium battery technical field for electric vehicles.A kind of anti-interference lithium batteries for electric vehicles, including battery box and electric core, electric core arrangement is placed in battery box, battery box includes box and upper cover shell piece, upper cover shell piece is equipped in the plug-in part outside of the top of box, plug-in part and upper cover shell piece are L-shaped.The utility model utilizes the optimization design to L-shaped plug-in part and upper cover shell piece, can effectively avoid interference point around battery compartment, so that the lithium battery can be normally put into battery compartment;And L-shaped box can be under the condition of not being affected by interference point, as far as possible more electric core is arranged, by analogy, under the condition of arranging same electric core, the size of L-shaped box can also be as far as possible reduced, small size box can be adapted to more battery compartment, and universality is stronger.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology for electric vehicles, and in particular to an anti-interference lithium battery for electric vehicles. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-electrolyte solution. They are widely used in new energy transportation, consumer electronics, energy storage, and other fields. With the continuous development of new energy vehicles, the demand for lithium-ion batteries is increasing, leading to a proliferation of types and models. Currently, most lithium-ion batteries on the market are rectangular, with shapes and sizes matching the battery compartments of various manufacturers, lacking universality. Furthermore, because the battery compartment is surrounded by fixing plates for connecting to the electric vehicle bracket, these plates interfere with the normal insertion of the rectangular lithium-ion battery. Specific angles or even re-disassembly and reassembly of the fixing plates are required to insert the battery, making installation and replacement time-consuming and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an anti-interference lithium battery for electric vehicles that can overcome or at least partially solve the above problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An anti-interference lithium battery for electric vehicles includes a casing, which comprises a lower casing and an upper casing. Battery cells are arranged inside the lower casing, the number of which is an integer greater than 1, or N (where N is an integer greater than 1). Insulating spacers and buffer pads are provided at the contact points between the inner wall of the lower casing and the battery cells, and between the battery cells. The insulating spacers and buffer pads tightly enclose the battery cells, preventing them from colliding, rubbing, or shifting within the lower casing. Copper busbars are provided at the electrodes of the battery cells, and wire harnesses are connected to the copper busbars. The other end of the wire harnesses is connected to a power connector. A plug-in portion is provided at the top of the lower casing.

[0006] The plug-in part is L-shaped, with a connecting post on the inner side, and a threaded hole inside the connecting post communicating with the outer side of the plug-in part;

[0007] The upper cover is L-shaped and has a threaded hole at the bottom. The threaded hole on the upper cover matches the threaded hole on the plug-in part. The upper cover can cover and be installed above the plug-in part and is tightly connected by bolts.

[0008] Furthermore, a sealing element is press-fitted into the area between the insertion part and the upper cover shell.

[0009] Furthermore, the power connector is mounted on the vertical surface of the L-shaped step of the upper cover.

[0010] Furthermore, the upper cover shell also has mounting holes for battery status indicator lights on the vertical surface of the L-shaped step.

[0011] Furthermore, the top of the upper cover shell is provided with a connecting member, and handles are connected to both sides of the connecting member. The handles are elliptical in shape and can be rotated 180° around the connecting member.

[0012] Preferably, the top of the upper cover shell is provided with a recessed area, which can be used to hide the mounting components and handle.

[0013] Furthermore, the connecting component is provided with a connecting body that is stably connected to the interior of the lower housing component. The connecting body can disperse part of the pulling force of the connecting component on the upper housing component to the lower housing component, so as to avoid deformation or damage to the upper housing component due to stress concentration during transportation.

[0014] Furthermore, a cable bracket is provided in the top area of ​​the lower housing, and the cable bracket has through holes for threading wire harnesses.

[0015] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0016] 1. This utility model utilizes the L-shaped insertion part and the upper cover shell to effectively avoid interference points around the battery compartment by using the notches on the L-shaped insertion part and the upper cover shell, so that the lithium battery can be normally placed into the battery compartment; and the L-shaped box design can arrange as many battery cells as possible without being affected by interference points. Similarly, when arranging the same number of battery cells, the size of the L-shaped box can also be reduced as much as possible. The smaller box can fit more battery compartments, making it more versatile.

[0017] By installing a seal between the connector and the top cover, dust and water can be prevented from entering the casing, ensuring a normal working environment for the battery cells.

[0018] 2. By providing mounting holes for installing the power connector and battery status indicator on the vertical surface of the L-shaped stepped area of ​​the top cover, sufficient space can be provided for plugging in the charging head or viewing the indicator, which is convenient and avoids the inability to properly plug in the charging head when the battery compartment space is limited.

[0019] 3. The handle design allows users to easily place and remove batteries during installation and replacement. Positioning the handle within the recessed area of ​​the top cover ensures that it does not occupy space inside the battery compartment when the battery is placed. It also prevents the handle from colliding with the inner wall of the battery compartment due to bumps, which could deform the top cover and affect its lifespan.

[0020] The design of the connecting part between the handle and the inside of the box can distribute some of the pulling force of the handle on the top cover, avoiding deformation or damage to the top cover due to stress concentration during transportation.

[0021] 4. The cable bracket design allows for neat cable arrangement inside the enclosure, facilitating maintenance. It also prevents cables from detaching from the battery or connector due to vehicle movement during battery installation, thus ensuring the battery functions properly.

[0022] In summary, this utility model, through the design of the L-shaped housing and the top cover, avoids interference points within the battery compartment, allowing for the arrangement of more battery cells within the limited housing space. The vertical surface of the L-shaped top cover features mounting holes for the power connector and battery status indicator light, saving space and facilitating use. The concealed handle further saves space and prevents deformation of the top cover due to impact. The cable support system facilitates battery maintenance and ensures a stable connection between the cables, battery cells, and interfaces. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of an anti-interference lithium battery for electric vehicles proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the explosion structure of an anti-interference lithium battery for electric vehicles proposed in this utility model;

[0025] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0026] Figure 4 This utility model provides a three-dimensional structural diagram of an anti-interference lithium battery for electric vehicles when the lithium battery is placed in the battery compartment.

[0027] Figure 5 This is a schematic diagram of the cable bracket in an anti-interference lithium battery for electric vehicles proposed in this utility model;

[0028] In the diagram: 1. Shell; 2. Lower shell component; 3. Upper cover component; 4. Battery cell; 5. Power connector; 6. Connector; 7. Connecting post; 8. Mounting hole; 9. Connecting component; 10. Handle; 11. Connector; 12. Cable bracket; 13. Battery compartment; 14. Internal structure of the electric vehicle. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Example 1:

[0032] An anti-interference lithium battery for electric vehicles, such as Figure 1-3 As shown, the device includes a housing 1, which comprises a lower housing component 2 and an upper housing component 3. The lower housing component 2 houses N battery cells 4 (N being an integer greater than 1). Insulating spacers and buffer pads are provided at the contact points between the battery cells 4 and the inner wall of the lower housing component 2, and between the battery cells 4. These insulating spacers and buffer pads tightly enclose the battery cells 4, preventing them from colliding, rubbing, or shifting within the lower housing component 2. Copper busbars are located at the electrodes of the battery cells 4, and wire harnesses are connected to the copper busbars. The other end of the wire harnesses is connected to a power connector 5. A plug-in portion 6 is located at the top of the lower housing component 2.

[0033] The plug part 6 is L-shaped, and a connecting post 7 is provided on the inner side. The connecting post 7 has a threaded hole that communicates with the outer side of the plug part 6.

[0034] The upper cover shell 3 is L-shaped and has a threaded hole at the bottom. The threaded hole on the upper cover shell 3 matches the threaded hole on the plug-in part 6. The upper cover shell 3 can cover and be installed on the plug-in part 6 and is tightly connected by bolts.

[0035] like Figure 4 As shown in the figure, this is a schematic diagram of the present invention placed inside the battery compartment 13 of an electric vehicle. The arrows in the figure indicate the direction in which the battery is removed or placed. Figure 4 As can be seen, the electric vehicle internal structure 14 around the battery compartment 13 is provided with fixing pieces for connection. These fixing pieces will prevent the square battery from being properly placed into the battery compartment 13, forming interference points. In order to effectively avoid these interference points, this utility model adopts the design of L-shaped plug-in part 6 and upper cover shell 3.

[0036] By utilizing the L-shaped connector 6 and the upper cover shell 3, interference points around the battery compartment 13 can be effectively avoided by utilizing the notches on the L-shaped connector 6 and the upper cover shell 3, allowing the lithium battery to be properly placed into the battery compartment 13. Furthermore, the design of the L-shaped connector 6 allows the lower shell 2 to accommodate as many battery cells 4 as possible without being affected by interference points. Similarly, when arranging the same number of battery cells 4, the size of the lower shell 2 can also be reduced as much as possible. The smaller size of the lower shell 2 can accommodate more battery compartments 13, making it more versatile.

[0037] A seal is press-fitted between the insertion part 6 and the upper cover shell 3.

[0038] Before the upper cover shell 3 is connected to the plug part 6, a sealing element is first installed on the top of the plug part 6. Then, the upper cover shell 3 is connected to the outer side of the top of the upper cover shell 3 by bolts. At this time, the sealing element on the top of the plug part 6 can be pressed tightly by the bolt connection, so that the sealing element is tightly fitted between the plug part 6 and the upper cover shell 3, preventing water or dust from entering the interior of the shell 1.

[0039] Example 2:

[0040] Reference Figure 1 Based on Example 1, the difference is that the power socket 5 is installed on the vertical surface of the L-shaped step of the upper cover shell 3;

[0041] The upper cover shell 3 also has mounting holes 8 for the battery status indicator light on the vertical surface of the L-shaped step.

[0042] By setting the power socket 5 and the battery status indicator light mounting hole 8 on the vertical surface of the L-shaped stepped area of ​​the upper cover shell 3, sufficient space can be provided for power connection or viewing the indicator light, which is convenient and avoids the inability to properly plug in the charging head when the space of the battery compartment 13 is limited.

[0043] Example 3:

[0044] Reference Figure 1 and Figure 2 Based on Example 2, the difference is that the top of the upper cover shell 3 is provided with a connecting member 9, and handles 10 are connected to both sides of the connecting member 9. The handles 10 are elliptical and can be rotated 180° around the connecting member 9.

[0045] The top of the upper cover 3 has a recessed area, which can be used to hide the mounting bracket 9 and the handle 10.

[0046] The use of the connecting piece 9 and the handle 10 makes it convenient for users to install and replace batteries. By placing the connecting piece 9 and the handle 10 in the recessed area of ​​the upper cover shell 3, the connecting piece 9 and the handle 10 do not occupy space inside the battery compartment 13 when the battery is placed inside. This also prevents the handle 10 from colliding with the inner wall of the battery compartment 13 due to bumps, which could deform the upper cover shell 3 and affect its service life.

[0047] The connecting component 9 is provided with a connecting body 11 that is stably connected to the interior of the lower housing component 2. The connecting body 11 can disperse part of the pulling force of the connecting component 9 on the upper housing component 3 to the lower housing component 2, so as to avoid the upper housing component 3 from being deformed or damaged due to stress concentration during transportation.

[0048] Example 4:

[0049] Reference Figure 2 and Figure 5 Based on embodiment 3, the difference is that a cable bracket 12 is provided in the top area of ​​the lower housing 2, and the cable bracket 12 is provided with through holes for threading wire harnesses.

[0050] By using the cable bracket 12, the wiring harness inside the box can be arranged neatly and maintenance is convenient. At the same time, it can also prevent the wiring harness from falling off the copper busbar or the plug interface 5 due to vehicle shaking when the battery is installed and used, which would prevent the battery from being used normally.

[0051] Example 5:

[0052] Based on Embodiment 1, the difference is that the insertion part 6 and the upper cover shell 3 can also be inverted T-shaped;

[0053] Compared to the L-shaped insertion part 6 and the upper cover shell 3 which have only one notch, the inverted T-shaped insertion part 6 and the upper cover shell 3 have notches on both sides. This design can provide more space to avoid interference points, and at the same time, it can save manufacturing materials and reduce manufacturing costs.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An anti-interference lithium battery for electric vehicles, comprising a casing (1), the casing (1) comprising a lower casing component (2) and an upper casing component (3), wherein battery cells (4) are arranged inside the lower casing component (2), the number of battery cells (4) being an integer greater than 1, characterized in that: The inner wall of the lower housing (2) is provided with insulating spacers and buffer pads in the areas where it contacts the battery cell (4) and between the battery cells (4). The insulating spacers and buffer pads tightly wrap the battery cells (4) so ​​that the battery cells (4) will not collide, rub, or shift with each other within the lower housing (2). Copper busbars are provided at the electrodes of the battery cells (4), and wire harnesses are connected to the copper busbars. The other end of the wire harnesses is connected to a power connector (5). A plug-in part (6) is provided at the top of the lower housing (2). The plug-in part (6) is L-shaped, and a connecting post (7) is provided on the inner side. The connecting post (7) has a threaded hole that communicates with the outer side of the plug-in part (6). The upper cover shell (3) is L-shaped and has a threaded hole at the bottom. The threaded hole on the upper cover shell (3) matches the threaded hole of the plug-in part (6). The upper cover shell (3) can cover and be installed above the plug-in part (6) and is tightly connected by bolts.

2. The anti-interference lithium battery for electric vehicles according to claim 1, characterized in that, A sealing element is press-fitted between the plug part (6) and the upper cover shell (3).

3. The anti-interference lithium battery for electric vehicles according to claim 1, characterized in that, The power socket (5) is installed on the vertical surface of the L-shaped step of the upper cover shell (3).

4. The anti-interference lithium battery for electric vehicles according to claim 3, characterized in that, The upper cover shell (3) also has mounting holes (8) for battery status indicator lights on the vertical surface of the L-shaped step.

5. An anti-interference lithium battery for electric vehicles according to claim 4, characterized in that, The top of the upper cover shell (3) is provided with a connecting piece (9), and handles (10) are connected to both sides of the connecting piece (9). The handles (10) are elliptical and can be rotated 180° around the connecting piece (9).

6. The anti-interference lithium battery for electric vehicles according to claim 5, characterized in that, The top of the upper cover (3) is provided with a recessed area, which can be used to hide the mounting bracket (9) and the handle (10).

7. An anti-interference lithium battery for electric vehicles according to claim 6, characterized in that, The connecting component (9) is provided with a connecting body (11) that is stably connected to the interior of the lower housing component (2). The connecting body (11) can disperse part of the pulling force of the connecting component (9) on the upper housing component (3) to the lower housing component (2), so as to avoid the upper housing component (3) from being deformed or damaged due to stress concentration during transportation.

8. The anti-interference lithium battery for electric vehicles according to claim 1, characterized in that, The top area inside the lower housing (2) is provided with a cable bracket (12), and the cable bracket (12) is provided with through holes for threading wire harnesses.

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