Battery pack clamping device

Abstract

A battery pack clamping device includes a tightening rod, a support plate, a clamping band, and a stop mechanism, wherein the tightening rod is rotatably mounted on the support plate, the two ends of the clamping band are respectively fixed to the battery pack and the tightening rod, and the stop mechanism can prevent the tightening rod from rotating. The present invention does not require dedicated packaging equipment, and only requires tools such as screws and screwdrivers to install the second end of the clamping band on the unit battery, and then the tightening rod can be rotated to tighten and loosen the clamping band on the battery pack, and then the stop mechanism is used to prevent the tightening rod from rotating.

Description

Technical Field

[0001] The invention belongs to the technical field of battery manufacturing and relates to the assembly of a battery pack, in particular to a battery pack clamping device. Background Art

[0002] Lithium-ion batteries are the future development direction of batteries due to their high energy density, high voltage, no pollution, long cycle life, no memory effect, and fast charging. Moreover, lithium-ion batteries are in line with the direction of national industrial policies and are currently an important development target industry for all countries. Lithium-ion batteries have been widely used as a new energy source for automobiles. However, since electric vehicles have high requirements for battery voltage, current, consistency, etc., several battery packs consisting of lithium-ion batteries connected in series and parallel are installed in the power box of electric vehicles. In order to increase the capacity, multiple batteries are generally connected in parallel. After the batteries are connected in parallel, multiple clamping bands are needed to clamp each single battery to form a battery pack, such as Figure 1 As shown, however, in the existing battery pack, the clamping straps require special packaging equipment to clamp the batteries, and if a battery in the battery pack fails during use, the tensioning straps must be cut to remove the batteries for repair. After the repair is completed, the batteries need to be repacked with special packaging equipment before they can be used again.

[0003] The existing battery packs using clamping bands require special packaging equipment, and the packaging operation is troublesome. The tensioning band needs to be cut during maintenance, and the clamping band cannot be reused, which wastes the clamping band. After the maintenance, special packaging equipment is still needed for packaging, which is cumbersome. Summary of the invention

[0004] In order to solve the above technical problems existing in the prior art, the present invention provides a battery pack clamping device which does not require special packaging equipment, has a reusable tensioning belt, and is easy to disassemble. The present invention adopts the following technical solutions:

[0005] A battery pack clamping device includes a tightening rod, a support plate, a clamping belt, and a stopping mechanism. The tightening rod is rotatably mounted on the support plate, and the two ends of the clamping belt are respectively fixed to the battery pack and the tightening rod. The stopping mechanism can prevent the tightening rod from rotating.

[0006] Preferably, the tightening rod includes a first tightening rod and a second tightening rod, the clamping band includes a first clamping band and a second clamping band, the first end of the first clamping band is fixed to the first tightening rod, the second end of the first clamping band is fixed to the battery pack, the first end of the second clamping band is fixed to the second tightening rod, the second end of the second clamping band is fixed to the battery pack, and the first tightening rod, the second tightening rod, the support plate, the first clamping band, and the second clamping band are jointly surrounded outside the battery pack.

[0007] Preferably, the first tightening rod and the second tightening rod are both round rod structures.

[0008] Preferably, the first tightening rod and the second tightening rod are arranged vertically and in parallel.

[0009] Preferably, the stopping mechanism includes a baffle, a first vertical groove, and a second vertical groove. The first vertical groove is arranged at the top end of the first tightening rod, and the second vertical groove is arranged at the top end of the second tightening rod. Both ends of the baffle are respectively inserted into the first vertical groove and the second vertical groove.

[0010] Preferably, the first tightening rod is provided with a first annular groove, and the second tightening rod is provided with a second annular groove, and the first annular groove and the second annular groove are used for assembling the support plate.

[0011] Preferably, the first annular groove is smaller than the diameter of the rod body of the first tightening rod, and the diameter of the second annular groove is smaller than the diameter of the rod body of the second tightening rod.

[0012] Preferably, the number of the first annular grooves is set to 2, the number of the second annular grooves is set to 2, and correspondingly, the number of the support plates is 2.

[0013] Preferably, nuts are further provided at the bottom ends of the first tightening rod and the second tightening rod, and the nuts are used to prevent the support plate from falling off the first tightening rod and the second tightening rod.

[0014] The beneficial effects of the present invention are as follows: no special packaging equipment is required. When packaging, multiple single cells are placed in the cavity formed by the battery pack clamping device, and the second end and the fourth end of the battery pack clamping device are connected to the batteries in the battery pack by connecting parts such as screws. In addition, the clamping band can be tightly attached to the battery pack by rotating the first clamping rod clockwise and the second clamping rod counterclockwise at the same time. When a problem occurs in the battery pack, there is no need to cut the clamping band. It is only necessary to remove the connecting part from the battery pack with a screwdriver or other tools, and then rotate the first rotating clamping rod counterclockwise or the second clamping rod clockwise to very conveniently remove the batteries in the battery pack for inspection and repair. When the repair is completed, it is only necessary to rotate the first clamping rod clockwise and the second clamping rod counterclockwise at the same time to complete it again. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of a clamping band used in a battery pack in the prior art;

[0016] Figure 2 is a schematic structural diagram of an embodiment of the present invention;

[0017] Figure 3is a right side view of an embodiment of the present invention;

[0018] Figure 4 is a top view of an embodiment of the present invention;

[0019] Figure 5 is a front view of an embodiment of the present invention;

[0020] Figure 6 is a rear view of an embodiment of the present invention used for clamping a battery pack;

[0021] Figure 7 It is a schematic diagram of an embodiment of the present invention for clamping a battery pack.

[0022] Figure 1 Middle: 10. Single battery, 20. Clamping belt, 30. Bracket, 100. Battery pack;

[0023] Figure 2-Figure 7 Middle: 1. tightening rod, 1-1. first tightening rod, 1-2. second tightening rod, 1-3. first vertical groove, 1-4. second vertical groove, 1-5. first annular groove, 1-6. second annular groove, 1-7. first tightening rod body, 1-8. second tightening rod body, 1-9. nut, 1-10 baffle, 2. fixing bracket, 2-1. first fixing bracket, 2-2. second fixing bracket, 2-3. first mounting hole, 2- 4. Second mounting hole, 2-5. Third mounting hole, 2-6. Fourth mounting hole, 3. Clamping band, 3-1. First clamping band, 3-1-1. First end of first clamping band, 3-1-2. Second end of first clamping band, 3-1-3. Hole one, 3-2. Second clamping band, 3-2-1. First end of second clamping band, 3-2-2. Second end of second clamping band, 3-2-3. Hole two, 100. Battery pack, 101. Cavity. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Figure 1 The clamping band 20 used for clamping the single battery 10 to form the battery pack 100 in the prior art, the brackets 30 are arranged on the left and right end surfaces of the battery pack 100, and the brackets 30 are provided with card slots and card positions matching the shape of the battery 10, and the clamping band 20 is tightly wound around the battery pack 100 and the outside of the bracket through a dedicated packaging device. If there is a problem with the battery pack 100, the clamping band 20 needs to be cut off to facilitate the inspection and maintenance of the single battery 10 one by one. After the maintenance is completed, the battery pack 100 needs to be re-packed with the clamping band 20. Without a dedicated packaging device, it is impossible to pack. For the user of the battery pack 100, not only is it troublesome to pack and repair, but the clamping band 20 can only be used once, which wastes resources.

[0026] Figure 2-Figure 7 As a preferred embodiment of the present invention, there is provided a battery pack clamping device that is easy to disassemble, the battery pack clamping device comprising a tightening rod 1, a fixing bracket 2, and a clamping band 3. The tightening rod 1 is rotatably and vertically mounted on the fixing bracket 2, one end of the clamping band 3 is vertically mounted on the tightening rod 1, and the other end of the clamping band 3 is fixedly mounted on the battery pack 100. The tightening rod 1, the fixing bracket 2, and the clamping band 3 together form a cavity 101 for accommodating the battery pack 100.

[0027] The number of the tightening rods 1 is set to 2. Of course, the number of the tightening rods 1 can be set according to actual needs. They have the same structure and are all round rod-shaped structures, including a first tightening rod 1-1 and a second tightening rod 1-2. The first tightening rod 1-1 and the second tightening rod 1-2 are vertically and parallelly arranged. The top of the first tightening rod 1-1 is provided with a plurality of first vertical grooves 1-3, and the top of the second tightening rod 1-2 is provided with a plurality of second vertical grooves 1-4. The first vertical grooves 1-3 and the second vertical grooves 1-4 have the same structure and are evenly distributed along the radial direction of the first tightening rod 1-1 or the second tightening rod 1-2. The first tightening rod 1-1 is also provided with two first annular grooves 1-5 for installing the fixing bracket 2, and the diameter of the first annular groove 1-5 is smaller than the diameter of the first tightening rod body 1-7. The second tightening rod 1-2 is also provided with two second annular grooves 1-6 for installing the fixing bracket 2, and the diameter of the second annular groove 1-6 is smaller than the diameter of the second tightening rod body 1-8. The first annular groove 1-5 and the second annular groove have the same structure. The bottom ends of the first tightening rod 1-1 and the second tightening rod 1-2 are also provided with nuts 1-9, and the nuts 1-9 are used to prevent the fixing bracket 2 from falling off the tightening rod 1. A baffle 1-10 is also provided between the first tightening rod 1-1 and the second tightening rod 1-2, and one end of the baffle 1-10 is inserted into one of the first vertical grooves 1-3 of the first tightening rod 1-1, and the other end of the baffle 1-10 is inserted into the first vertical grooves 1-3 of the first tightening rod 1-1. One of the second vertical grooves 1-4 of the second tightening rod 1-2, the baffle 1-10 and the first vertical groove 1-1 and the second vertical groove 1-4 are all interference fit, the baffle 1-10, the first vertical groove 1-3, and the second vertical groove 1-4 form a stopping mechanism for preventing the first tightening rod 1-1 and the second tightening rod 1-2 from rotating after they are rotated into place, the baffle 1-10 is arranged above the fixed bracket 2, and can also prevent the fixed bracket 2 from being removed from the tightening rod 1.

[0028] The number of the fixed brackets 2 is set to 2, and the structures are the same, and both are rectangular. The number of the fixed brackets 2 can be set according to actual needs, including a first fixed bracket 2-1 and a second fixed bracket 2-2. The first fixed bracket 2-1 is located above the second fixed bracket 2-2. The first fixed bracket 2-1 is provided with a first mounting hole 2-3 and a second mounting hole 2-4. The second fixed bracket 2-1 is provided with a third mounting hole 2-5 and a fourth mounting hole 2-6. The first annular groove 1-5 of the first tightening rod 1-1 can be rotatably and vertically installed in the first mounting hole 2-3 of the first fixed bracket 2-1 and the third mounting hole 2-5 of the second fixed bracket 2-2. The second annular groove 1-6 of the second tightening rod 1-2 can be rotatably and vertically installed in the second mounting hole 2-4 of the first fixed bracket 2-1 and the fourth mounting hole 2-5 of the second fixed bracket 2-2.

[0029] The number of the clamping belts 3 is set to 3, with the same structure, arranged in parallel transversely, and all of them are flat belt structures. Similarly, the number of the clamping belts 3 can be set according to actual needs, including a first clamping belt 3-1 and a second clamping belt 3-2. The first end 3-1-1 of the first clamping belt 3-1 is installed on the circumference of the support frame 1 clockwise, and the second end 3-1-2 of the other end of the first clamping belt 3-1 is provided with a hole 3-1-3, and bolts and other connecting parts pass through the hole 3-1-3 to fix the first clamping belt 3-1. The first clamping band 3-1 is connected to the battery pack 100; the first end 3-2-1 of the second clamping band 3-2 is installed counterclockwise on the circumference of the support frame 1, and the second end 3-2-2 of the second clamping band 3-2 is provided with a second hole 3-2-3, and bolts and other connecting parts pass through the second hole 3-2-3 to connect the second clamping band 3-2 to the battery pack 100. The first clamping band 3-1, the second clamping band 3-2 and the tightening rod 1 and the fixing bracket 2 form a cavity 101 for accommodating the battery pack 100.

[0030] When it is necessary to clamp the battery pack 100, the first tightening rod 1-1 is rotated clockwise so that the first end 3-1-1 of the first clamping band 3-1 is wrapped more around the rod body of the first tightening rod 1-1, and / or the second tightening rod 1-2 is rotated counterclockwise so that the third end 3-2-1 of the second clamping band 3-2 is wrapped more around the rod body of the second tightening rod 1-2. After the first tightening rod 1-1 and / or the second tightening rod 1-2 are rotated into place, the two ends of the baffle 1-9 are respectively inserted into the first vertical groove 1-3 and the second vertical groove 1-4, so that the clamping band 3 can clamp the battery pack 100.

[0031] When it is necessary to loosen the battery pack 100, first take out the two ends of the baffle 1-9 from the first vertical groove 1-3 and the second vertical groove 1-4, then rotate the first tightening rod 1-1 counterclockwise, so that the first end 3-1-1 of the first clamping band 3-1 is loosened more on the rod body of the first tightening rod 1-1, and / or rotate the second tightening rod 1-2 clockwise, so that the third end 3-2-1 of the second clamping band 3-2 is loosened more on the rod body of the second tightening rod 1-2. After the first tightening rod 1-1 and / or the second tightening rod 1-2 are rotated into place, the two ends of the baffle 1-9 are respectively inserted into the first vertical groove 1-3 and the second vertical groove 1-4, so that the clamping band 3 can relax the clamping of the battery pack 100.

[0032] The battery pack clamping device in this embodiment does not require special packaging equipment. When packaging, multiple single cells are placed in the cavity formed by the battery pack clamping device, and the second end and the fourth end of the battery pack clamping device are connected to the batteries in the battery pack with screws and other connecting parts. In addition, the clamping band can be tightly attached to the battery pack by rotating the first clamping rod clockwise and the second clamping rod counterclockwise at the same time. When a problem occurs in the battery pack, there is no need to cut the clamping band. It is only necessary to remove the connecting part from the battery pack with a screwdriver or other tools, and then rotate the first rotating clamping rod counterclockwise or the second clamping rod clockwise to very conveniently remove the batteries in the battery pack for inspection and repair. When the repair is completed, it is only necessary to rotate the first clamping rod clockwise and the second clamping rod counterclockwise at the same time to complete it again.

[0033] The preferred embodiments of the present invention are described in detail above. For those skilled in the art, the present invention is not limited to the above embodiments. According to the ideas provided by the present invention, there may be changes in the specific implementation methods, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack clamping device, characterized in that: It comprises a tightening rod (1), a fixing bracket (2), a clamping belt (3), and a stopping mechanism, wherein the tightening rod (1) is rotatably mounted on the fixing bracket (2), two ends of the clamping belt (3) are respectively fixed to a battery pack (100) and the tightening rod (1), and the stopping mechanism can prevent the tightening rod (1) from rotating; The stopping mechanism comprises a baffle (1-10), a first vertical groove (1-3), and a second vertical groove (1-4); the first vertical groove (1-3) is arranged at the top end of the first tightening rod (1-1), the second vertical groove (1-4) is arranged at the top end of the second tightening rod (1-2), and two ends of the baffle (1-10) are respectively inserted into the first vertical groove (1-1) and the second vertical groove (1-4); the baffle (1-10) is arranged above the fixing bracket (2); The tightening rod (1) comprises a first tightening rod (1-1) and a second tightening rod (1-2); the clamping band (3) comprises a first clamping band (3-1) and a second clamping band (3-2); the first end (3-1-1) of the first clamping band (3-1) is fixed to the first tightening rod (1-1); the second end (3-1-2) of the first clamping band (3-1) is fixed to the battery pack (100); the first end (3-2-1) of the second clamping band (3-2) is fixed to the second tightening rod (1-2); the second end (3-2-2) of the second clamping band (3-1) is fixed to the battery pack (100); the first tightening rod (1-1), the second tightening rod (1-2), the fixing bracket (2), the first clamping band (3-1) and the second clamping band (3-2) are together surrounded by the battery pack (100); The first tightening rod (1-1) and the second tightening rod (1-2) are both round rod-shaped structures; The first tightening rod (1-1) and the second tightening rod (1-2) are arranged vertically and in parallel; The fixing bracket (2) comprises a first fixing bracket (2-1) and a second fixing bracket (2-2), wherein the first fixing bracket (2-1) is located above the second fixing bracket (2-2).

2. A battery pack clamping device as claimed in claim 1, characterized in that: The first tightening rod (1-1) is provided with a first annular groove (1-5), and the second tightening rod (1-2) is provided with a second annular groove (1-6); the first annular groove (1-5) and the second annular groove (1-6) are used for assembling the fixing bracket (2).

3. A battery pack clamping device as claimed in claim 2, characterized in that: The first annular groove (1-5) is smaller than the diameter of the rod body (1-7) of the first tightening rod (1-1), and the diameter of the second annular groove (1-6) is smaller than the diameter of the rod body (1-8) of the second tightening rod (1-2).

4. A battery pack clamping device as claimed in claim 3, characterized in that: The number of the first annular grooves (1-5) is set to 2, and the number of the second annular grooves (1-6) is set to 2. Correspondingly, the number of the fixing brackets (2) is 2.

5. A battery pack clamping device as claimed in claim 3, characterized in that: The bottom ends of the first tightening rod (1-1) and the second tightening rod (1-2) are respectively provided with nuts (1-9), and the nuts (1-9) are used to prevent the fixing bracket (2) from falling off the first tightening rod (1-1) and the second tightening rod (1-2).

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