Connecting device and battery pack mounting structure with same

Abstract

The utility model provides a connecting device and a battery pack installation structure with the connecting device, the connecting device forms detachable connection between a battery pack and a vehicle body, the connecting device comprises a pair of receiving parts which are fixedly connected on the vehicle body at intervals; the pair of sliding parts are separately arranged at the receiving parts and are in separable insertion fit with the receiving parts; the fixed part is arranged between the pair of sliding parts and is fixedly connected with the side surface of the battery pack; the sliding parts are arranged at the two ends of the fixed part in a sliding manner; the connecting part is supported and connected between the pair of sliding parts; the pair of sliding parts has an assembling state in which the pair of sliding parts is kept inserted into the receiving part due to the support of the connecting part, and a disassembling state in which the pair of sliding parts are pulled by operating the connecting part to move relatively to be separated from the receiving part. The utility model has the effect of ensuring the use stability and the replacement convenience of the battery pack by improving the disassembly and assembly speed and the installation stability of the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack installation, and in particular to a connecting device and a battery pack installation structure having the same. Background Art

[0002] Developing new energy vehicles is the only way for my country to move from an automobile power to an automobile powerhouse.

[0003] As the heart of new energy vehicles, battery packs are key components that determine the endurance and safety of electric vehicles, and are key constraints for new energy vehicles to gain market recognition and customer reliance. At the same time, new energy vehicle battery replacement technology is booming, and the market demand for reliability in the battery replacement process of new energy vehicles and the speed of battery replacement and unlocking is increasing.

[0004] In the related art, the battery pack and the frame are usually connected by bolts. The bolt connection is more reliable, but it takes a long time to install, and repeated disassembly and assembly reduce the service life of the connector. Then, a lock connection method is introduced. The lock connection takes less time to install than the bolt connection, but repeated disassembly and assembly will cause dimensional deviations, resulting in gaps on the mating surfaces, affecting the power supply stability. Utility Model Content

[0005] In view of this, the utility model aims to provide a connection device to improve the speed of disassembly and assembly of the battery pack and the stability after installation, so as to ensure the stability of use and convenience of replacement of the battery pack.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A connecting device, constituting a detachable connection between a battery pack and a vehicle body, the connecting device comprising:

[0008] A pair of receiving portions, fixedly connected to the vehicle body at intervals;

[0009] A pair of sliding parts, respectively disposed at each of the receiving parts, and forming a separable plug-in fit with the receiving parts;

[0010] A fixed part is arranged between the pair of sliding parts and fixedly connected to the side of the battery pack; each of the sliding parts is slidably arranged at two ends of the fixed part;

[0011] A connecting portion, supported and connected between the pair of sliding portions;

[0012] The pair of sliding parts has an assembled state in which the pair of sliding parts are inserted into the receiving part due to the support of the connecting part, and a disassembled state in which the pair of sliding parts are separated from the receiving part due to the operation of the connecting part to pull the pair of sliding parts to move relative to each other.

[0013] Further, the connecting portion is configured as a spring sheet connected between a pair of the sliding portions.

[0014] Furthermore, the fixing portion is in the shape of a hollow cylinder, and the pair of sliding portions are constructed as sleeves slidably mounted on both ends of the fixing portion.

[0015] Furthermore, the connecting part is accommodated in the fixing part, and the two ends of the connecting part extend from the two ends of the fixing part and are connected to the sliding parts; an operating opening exposing the middle section of the connecting part is provided on the circumferential side wall of the fixing part.

[0016] Furthermore, the middle section of the connecting portion is configured to bulge in a direction away from the operating port.

[0017] Furthermore, support blocks for the connecting part to pass through are respectively fixed in the fixing parts at both ends of the middle section.

[0018] Furthermore, an insert block extending outward is provided on the outside of the fixing portion, and the insert block is inserted and matched with the side surface of the battery pack.

[0019] Furthermore, the receiving portion is constructed as a fixed block with an insertion hole, and the sliding portion is slidably inserted in the insertion hole.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The connection device described in the utility model completes the installation of the battery pack and the vehicle body by setting the connection part so that the sliding part maintains the plug-in assembly state with the receiving part due to the support of the connection part; the connection part is adjusted so that a pair of sliding parts move toward each other and separate from the receiving part, thereby completing the disassembly of the battery pack and the vehicle body; the effect of improving the disassembly and assembly speed of the battery pack is achieved. At the same time, the sliding part is slidably sleeved on both ends of the fixed part and is connected or separated with the receiving part by plugging; the cooperation between the battery pack and the vehicle body is achieved through the sliding cooperation of the sliding part and the receiving part, and the fixation will not fail due to reciprocating disassembly and assembly, thereby improving the stability of the battery pack installation.

[0022] Secondly, by setting the connecting part as a spring leaf, the sliding part can be easily held in the receiving part after being assembled or disassembled from the receiving part due to the support of the connecting part; and the sliding part can be easily pulled toward each other when the sliding part needs to be separated from the receiving part.

[0023] In addition, by setting the fixing part to be a hollow cylinder, the fixing part has anti-bending properties and is lighter in weight, which helps to reduce the weight of new energy vehicles, helps to achieve lightweight vehicles, and improves the handling of vehicles equipped with the connecting device.

[0024] By arranging the connection part to be accommodated in the fixed part, it is convenient for the two ends of the connection part to be connected to the centers of the two sliding parts respectively, so that the force applied by the connection part to the sliding part is more balanced, and the wear between the sliding part and the fixed part is reduced. At the same time, the connection part is arranged in the fixed part, and an operation port is opened at the exposed part of the fixed part. While the specific operation port is convenient for adjusting the state of the connection part, it can effectively prevent accidental touch, ensure that the connection relationship between the sliding part and the receiving part will not change due to accidental touch, and improve the safety of the battery pack connection.

[0025] By arranging support blocks at both ends of the fixed part for the connecting part to pass through, when adjusting the state of the connecting part to adjust the relative position between the sliding part and the receiving part, the setting of the support blocks can better limit the change of the connecting part along a preset path, thereby converting the external force perpendicular to the center line of the length direction of the fixed part into a force in the same direction as the length direction of the fixed part, thereby converting more of the deformation of the connecting part into the displacement of the sliding part, and realizing a rapid response to external operations.

[0026] By arranging an outwardly extending plug block outside the fixing portion and plugging the plug block into the side of the battery pack, the convenience of connecting the battery pack with the fixing portion is improved.

[0027] The receiving portion is formed by providing an insertion hole on the integral fixing block, thereby ensuring the integrity of the receiving portion. When the battery pack is installed on the vehicle body, the receiving portion has better load-bearing and deformation-resistant capabilities.

[0028] The utility model also proposes a battery pack installation structure, wherein the battery pack is detachably connected to the vehicle body via the connection device as described above.

[0029] Furthermore, a plurality of the connection devices are disposed at intervals on two opposite side walls of the battery pack.

[0030] The battery pack installation structure described in the utility model realizes stable connection between the battery pack and the vehicle body and realizes rapid assembly and disassembly of the battery pack and the vehicle body by providing the above-mentioned connecting device between the battery pack and the vehicle body.

[0031] Secondly, by arranging multiple connection devices at intervals on the two opposite side walls of the battery pack, the number of connection points between the battery pack and the vehicle body is increased, so that when the vehicle body is bumpy, the battery pack still shakes at the same frequency as the vehicle body, thereby improving the stability of the connection between the battery pack and the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0033] Figure 1It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0034] Figure 2 This is a schematic diagram showing the parts of the sliding part of the embodiment of the utility model;

[0035] Figure 3 This is a schematic diagram showing the parts of the fixing part of the embodiment of the utility model;

[0036] Figure 4 This is a schematic diagram showing the parts of the receiving portion in an embodiment of the utility model;

[0037] Figure 5 This is a schematic diagram of parts showing the connection part of the embodiment of the utility model;

[0038] Figure 6 This is a cross-sectional view showing the connection portion of the embodiment of the utility model;

[0039] Figure 7 This is a schematic diagram showing the assembly relationship of the embodiment of the utility model;

[0040] Figure 8 The embodiment of the utility model is an overall diagram showing the assembly.

[0041] Description of the accompanying drawings: 1. Receiving portion;

[0042] 101, plug-in hole;

[0043] 2. Sliding part;

[0044] 201, yield slot; 202, avoidance slot;

[0045] 3. Fixed part;

[0046] 301, operation port; 302, plug-in block;

[0047] 4. Connecting part;

[0048] 5. Battery pack;

[0049] 6. Car body;

[0050] 7. Support block. DETAILED DESCRIPTION

[0051] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0052] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0054] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0055] Embodiment 1

[0056] This embodiment relates to a connection device to improve the disassembly and assembly speed and installation stability of the battery pack 5 to ensure the stability of use and convenience of replacement of the battery pack 5.

[0057] In terms of overall structure, the connecting device constitutes a detachable connection between the battery pack 5 and the vehicle body 6, and the connecting device includes: a pair of receiving parts 1, which are fixedly connected to the vehicle body 6 at intervals; a pair of sliding parts 2, which are arranged at each of the receiving parts 1 and form a detachable plug-in fit with the receiving parts 1; a fixing part 3, which is arranged between the pair of sliding parts 2 and is fixedly connected to the side of the battery pack 5; each of the sliding parts 2 is slidably arranged at both ends of the fixing part 3; a connecting part 4, which is supported and connected between the pair of sliding parts 2; the pair of sliding parts 2 have an assembled state in which they are plugged in with the receiving part 1 due to the support of the connecting part 4, and a disassembled state in which they are separated from the receiving part 1 due to the operation of the connecting part 4 to pull the pair of sliding parts 2 for relative movement.

[0058] As described above, by setting the connection part 4, the sliding part 2 is supported by the connection part 4 to maintain the plug-in assembly state with the receiving part 1, and the installation of the battery pack 5 and the vehicle body 6 is completed; the connection part 4 is adjusted to make a pair of sliding parts 2 move toward each other and separate from the receiving part 1, and the disassembly of the battery pack 5 and the vehicle body 6 is completed; the effect of increasing the disassembly speed of the battery pack 5 is achieved. At the same time, the sliding part 2 is slidably sleeved on both ends of the fixing part 3 and is connected or separated from the receiving part 1 by plugging; the cooperation between the battery pack 5 and the vehicle body 6 is achieved by the sliding cooperation between the sliding part 2 and the receiving part 1, and the fixation will not fail due to reciprocating disassembly and assembly, thereby improving the stability of the installation of the battery pack 5.

[0059] Based on the above overall introduction, the connecting device, such as Figures 1 to 6 As shown, the same pair of two sliding parts 2 are located between the same pair of two receiving parts 1, and the sliding part 2 is detachably inserted in the receiving part 1; the fixing part 3 is located between the same pair of two sliding parts 2, and the two sliding parts 2 are slidably inserted at both ends of the fixing part 3. Since the fixing part 3 is connected to the battery pack 5 and the receiving part 1 is connected to the vehicle body 6, when the sliding part 2 is inserted in the receiving part 1, the battery pack 5 and the vehicle body 6 are in a locked state, and when the sliding part 2 is separated from the receiving part 1, the battery pack 5 and the vehicle body 6 are in a separated state. The relative position between the sliding part 2 and the receiving part 1 can be adjusted by adjusting the connecting part 4.

[0060] Based on the purpose of adjusting the relative position between the two sliding parts 2 by the connecting part 4, as Figure 4 and Figure 5 As shown, the connecting portion 4 is constructed as a spring sheet connected between a pair of the sliding portions 2. By setting the connecting portion 4 as a spring sheet, it is convenient to keep the sliding portion 2 in the receiving portion 1 after being disassembled and assembled in the receiving portion 1 due to the support of the connecting portion 4; and it is convenient to pull the sliding portion 2 toward each other when the sliding portion 2 needs to be separated from the receiving portion 1.

[0061] In order to achieve lightweight connection devices, such as Figures 1 to 6 As shown, the fixing part 3 is a hollow cylindrical shape, and the pair of sliding parts 2 are constructed as sleeves slidably mounted on both ends of the fixing part 3. By setting the fixing part 3 to be a hollow cylindrical shape, the fixing part 3 has anti-bending properties and a smaller weight, which helps to reduce the weight of new energy vehicles, helps to achieve lightweight vehicles, and improves the vehicle equipped with the connection device to have better handling.

[0062] In order to avoid wear between the sliding part 2 and the fixed part 3, the connecting part 4 is accommodated in the fixed part 3, and the two ends of the connecting part 4 are extended from the two ends of the fixed part 3 and connected to each of the sliding parts 2; an operating port 301 exposing the middle section of the connecting part 4 is provided on the circumferential side wall of the fixed part 3, and the operating port 301 passes through the fixed part 3.

[0063] By arranging the connection part 4 to be accommodated in the fixing part 3, it is convenient for the two ends of the connection part 4 to be connected to the centers of the two sliding parts 2 respectively, so that the force applied by the connection part 4 to the sliding part 2 is more balanced, and the wear between the sliding part 2 and the fixing part 3 is reduced. At the same time, the connection part 4 is arranged in the fixing part 3, and an operation port 301 is opened at the exposed part of the fixing part 3. The specific operation port 301 is convenient for adjusting the state of the connection part 4, and can effectively prevent accidental touch, ensuring that the connection relationship between the sliding part 2 and the receiving part 1 will not change due to accidental touch, thereby improving the safety of the connection of the battery pack 5.

[0064] The corresponding sliding part 2 is provided with a circumferential side wall with a clearance groove 201 that can still expose the operation port 301 when the two sliding parts 2 are close to each other, so that the staff can adjust the state of the connecting part 4 through the operation port 301 during the disassembly and assembly of the battery pack 5.

[0065] Based on the purpose of adjusting the connection part 4 at the operation port 301, as Figures 1 to 6 As shown, in order to facilitate the adjustment of the connecting part 4, when the two sliding parts 2 are in a state of being close to each other, the middle section of the connecting part 4 is arranged to bulge in a direction away from one of the operating ports 301; thereby, it is convenient to adjust the state of the connecting part 4 by the operating port 301 that the connecting part 4 bulges close to.

[0066] In order to enable the sliding part 2 to quickly respond to the changes of the connecting part 4 caused by the operation, support blocks 7 for the connecting part 4 to pass through are fixed in the fixing part 3 at both ends of the middle section. By arranging the support blocks 7 for the connecting part 4 to pass through at both ends of the fixing part 3, when the state of the connecting part 4 is adjusted to adjust the relative position between the sliding part 2 and the receiving part 1, the arrangement of the support blocks 7 can better limit the change of the connecting part 4 along the preset path, realize the conversion of the external force perpendicular to the center line of the length direction of the fixing part 3 into the force in the same direction as the length direction of the fixing part 3, realize the conversion of more deformation of the connecting part 4 into the displacement of the sliding part 2, and realize the rapid response to the external operation.

[0067] In order to facilitate the connection between the fixed part 3 and the battery pack 5, an outwardly extending plug block 302 is provided on the outside of the fixed part 3, and the plug block 302 is plugged into the side of the battery pack 5. The plug block 302 is set as a rectangular plate structure. By setting the outwardly extending plug block 302 outside the fixed part 3 and plugging the plug block 302 into the side of the battery pack 5, the convenience of connecting the battery pack 5 and the fixed part 3 is improved. The side walls of the corresponding pair of two sliding parts 2 close to each other are provided with an avoidance groove 202 for avoiding the plug block 302. When the two sliding parts 2 move toward each other, the plug block 302 is located in the avoidance groove 202.

[0068] In order to improve the load-bearing capacity of the receiving part 1, the receiving part 1 is constructed as a fixed block with an insertion hole 101, and the sliding part 2 is slidably inserted in the insertion hole 101. The insertion hole 101 is opened on the overall fixed block to form the receiving part 1, which ensures the integrity of the receiving part 1. When the battery pack 5 is installed on the vehicle body 6, the receiving part 1 has better load-bearing and deformation resistance. In order to further improve the connection stability between the receiving part 1 and the sliding part 2, a magnetic part is embedded in the receiving part 1, and the magnetic part is magnetically connected to the sliding part 2. It further prevents the battery pack 5 from shaking due to bumps during the operation of the vehicle.

[0069] When the connection device of this embodiment is used, the receiving part 1 is first fixedly connected to the vehicle body 6, and the two receiving parts 1 of the same pair are arranged at intervals. Then, the connection part 4 is adjusted by the operation port 301 provided on the circumferential side wall of the fixing part 3, and the connection part 4 drives the two sliding parts 2 to slide toward each other along the length direction of the fixing part 3 until the two sliding parts 2 can be inserted between the two receiving parts 1 of the same pair. Then, the connection part 4 is adjusted again by the operation port 301, so that the two sliding parts 2 slide away from each other until the sliding parts 2 are inserted into the receiving part 1. Then, the plug 302 is inserted into the battery pack 5 from the side wall of the battery pack 5, and the use of the connection device is completed, and the connection between the battery pack 5 and the vehicle body 6 is completed.

[0070] By setting the connection part 4, the sliding part 2 is supported by the connection part 4 and maintained in the plug-in assembly state with the receiving part 1, and the installation of the battery pack 5 and the vehicle body 6 is completed; the connection part 4 is adjusted to make a pair of sliding parts 2 move toward each other and separate from the receiving part 1, and the disassembly of the battery pack 5 and the vehicle body 6 is completed; the effect of improving the disassembly and assembly speed of the battery pack 5 is achieved. At the same time, the sliding part 2 is slidably sleeved on both ends of the fixing part 3 and connected or separated with the receiving part 1 by plugging; the cooperation between the battery pack 5 and the vehicle body 6 is achieved by the sliding cooperation between the sliding part 2 and the receiving part 1, and the fixation will not fail due to reciprocating disassembly and assembly, thereby improving the stability of the installation of the battery pack 5.

[0071] Embodiment 2

[0072] This embodiment relates to a battery pack installation structure, such as Figure 7 and Figure 8 As shown, the battery pack 5 is detachably connected to the vehicle body 6 through the connection device as described above, and a plurality of connection devices are provided at intervals on the two opposite side walls of the battery pack 5. By providing the connection device as described above between the battery pack 5 and the vehicle body 6, a stable connection between the battery pack 5 and the vehicle body 6 is achieved, and the battery pack 5 and the vehicle body 6 can be quickly disassembled and assembled. By providing a plurality of connection devices at intervals on the two opposite side walls of the battery pack 5, the number of connection points between the battery pack 5 and the vehicle body 6 is increased, so that when the vehicle body 6 is bumpy, the battery pack 5 still shakes at the same frequency as the vehicle body 6, thereby improving the connection stability between the battery pack 5 and the vehicle body 6 and improving the efficiency of battery pack 5 battery replacement.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection device, constituting a detachable connection between a battery pack and a vehicle body, characterized in that: The connecting device comprises: A pair of receiving portions, fixedly connected to the vehicle body at intervals; A pair of sliding parts, respectively disposed at each of the receiving parts, and forming a separable plug-in fit with the receiving parts; A fixed part is arranged between the pair of sliding parts and fixedly connected to the side of the battery pack; each of the sliding parts is slidably arranged at two ends of the fixed part; A connecting portion, supported and connected between the pair of sliding portions; The pair of sliding parts has an assembled state in which the pair of sliding parts are inserted into the receiving part due to the support of the connecting part, and a disassembled state in which the pair of sliding parts are separated from the receiving part due to the operation of the connecting part to pull the pair of sliding parts to move relative to each other.

2. The connection device according to claim 1, characterized in that: The connecting portion is configured as a spring leaf connected between a pair of the sliding portions.

3. The connection device according to claim 2, characterized in that: The fixing portion is in the shape of a hollow cylinder, and the pair of sliding portions are constructed as sleeves slidably mounted on both ends of the fixing portion.

4. The connection device according to claim 3, characterized in that: The connecting part is accommodated in the fixing part, and the two ends of the connecting part are extended from the two ends of the fixing part and connected to the sliding parts; an operating opening exposing the middle section of the connecting part is provided on the circumferential side wall of the fixing part.

5. The connection device according to claim 4, characterized in that: The middle section of the connecting portion is configured to bulge in a direction away from the operation port.

6. The connection device according to claim 4, characterized in that: Support blocks for the connecting part to pass through are fixed in the fixing parts at both ends of the middle section respectively.

7. The connection device according to claim 1, characterized in that: An insert block extending outward is disposed outside the fixing portion, and the insert block is inserted and matched with the side surface of the battery pack.

8. The connection device according to any one of claims 1 to 7, characterized in that: The receiving portion is configured as a fixed block with an inserting hole, and the sliding portion is slidably inserted in the inserting hole.

9. A battery pack installation structure, characterized in that: The battery pack is detachably connected to the vehicle body via a connecting device according to any one of claims 1 to 8.

10. The battery pack installation structure according to claim 9, characterized in that: A plurality of spaced-apart connecting devices are respectively disposed on two opposite side walls of the battery pack.

Images