Power battery bottom impact system

Abstract

The utility model provides a power battery bottom impact system, which comprises an electric servo spring loading device, the electric servo spring loading device is used for providing vertically upward loading energy required by a test for a power battery, the electric servo spring loading device comprises an impact rod, and the top end of the impact rod is provided with an impact head; a to-be-tested power battery is placed on the battery testing frame, and the electric servo spring loading device is fixed below the to-be-tested power battery. The power battery bottom impact system has the beneficial effects that the electric servo spring loading device is fixed on the ground below the battery test frame for placing the power battery to be tested, and when the power battery needs to be tested, the electric servo spring loading device is fixed on the ground below the battery test frame for placing the power battery to be tested; and the impact head of the electric servo spring loading device is used for replacing manual work to carry out tests such as puncture on the power battery above, so that the personal safety of workers is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical structure field, especially is involved in a power battery bottom impact system. BACKGROUND

[0002] With the rapid development of science and technology, new energy vehicles have gradually become an important choice for our daily travel. New energy vehicles are leading the green development of the automobile industry with their environmental protection and energy saving advantages.

[0003] However, the safety of new energy vehicle batteries is still the focus of the industry. As the source of vehicle energy, the safety of power batteries is directly related to the safety of passengers' life and property. In order to ensure the safety of power batteries, various performance tests of the battery are essential, and the bottom impact test is a key test item to ensure that the battery can still work normally when subjected to external impact.

[0004] At present, the traditional power battery bottom impact test usually relies on manual operation for loading, and the staff needs to directly participate in the battery pack puncture and other equipment operation during the experiment. This way has great safety hazards. Therefore, an experimental system that can replace manual operation and automatically complete the battery pack puncture test is urgently needed to improve safety and ensure the reliability of the test process. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at putting forward a power battery bottom impact system to solve at least one problem in the background art.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] The power battery bottom impact system comprises an electric servo spring loading device, the electric servo spring loading device is used for providing the vertical upward loading energy required by the test for the power battery, the electric servo spring loading device comprises an impact rod, and an impact head is installed at the top end of the impact rod.

[0008] The power battery to be tested is placed on the battery test rack, and the electric servo spring loading device is fixed below the power battery to be tested.

[0009] Further, the electric servo spring loading device comprises a support frame arranged at the bottom, a track mounting frame is vertically arranged in the support frame, and two tracks are fixed on the inner side of the track mounting frame.

[0010] The impact rod is installed on the track through the linear bearings on the left and right sides.

[0011] Further, the impact rod is installed on the track through the linear bearings on the left and right sides.

[0012] Further, the support frame is provided with a safety pin sleeve, and a safety pin is arranged in the sleeve.

[0013] Further, a servo motor is arranged on the support frame, and a power output end of the servo motor is connected with a shaft gear through a shaft coupling.

[0014] Further, a guide rod is arranged on one side of the track mounting frame, and the guide rod is connected with the track mounting frame at the bottom and the top, and a spring is sleeved on the guide rod.

[0015] Further, a linear guide rail is arranged on the track mounting frame, and an electric cylinder is arranged at the bottom of one side of the track mounting frame; a lifting block is connected with a power output end of the electric cylinder, and the lifting block is provided with a corresponding sliding block structure on the side of the linear guide rail; and the lifting block is arranged below the linear bearing.

[0016] Further, the safety protection device is provided with a sealing structure with a through hole on the upper side, and the safety protection device is arranged outside the power battery bottom impact system.

[0017] Compared with the prior art, the power battery bottom impact system has the following beneficial effects:

[0018] The utility model discloses a static power battery bottom impact system, through fixed electric servo spring loading device below the ground of the battery test frame for placing the power battery to be tested, when needing to test the power battery, the impact head of electric servo spring loading device is used to replace manual to test the power battery above, guarantees the personal safety of staff. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings that constitute a part of the utility model are used to provide further understanding on the utility model, and the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0020] Figure 1 It is the power battery bottom impact system schematic view that the utility model embodiment is described;

[0021] Figure 2 It is the first three-dimensional structure schematic view that the utility model embodiment is described;

[0022] Figure 3 It is the second three-dimensional structure schematic view that the utility model embodiment is described;

[0023] Figure 4 It is the third three-dimensional structure schematic view that the utility model embodiment is described.

[0024] Mark of drawing:

[0025] 1-electric servo spring loading device; 101-support frame; 102-rail mounting bracket; 103-rail; 104-impact rod; 105-linear bearing; 106-rack; 107-counterweight; 108-impact head; 109-spring holder; 110-safety pin sleeve; 111-safety pin; 112-safety pin electric push rod; 113-servo motor; 114-coupling; 115-axle gear; 116-guide rod; 117-spring; 118-non-contact displacement sensor; 119-inductive magnetic sheet; 120-linear guide rail; 121-electric cylinder; 1210-lifting block; 122-guide column; 123-support seat; 2-traveling mechanism; 201-roller fixing plate; 202-servo motor; 203-reducer; 204-driving roller; 205-driven roller; 206-chain; 207-linear bearing; 208-supporting electric cylinder; 3-safety protection device; 4-battery test rack. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0027] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] The power battery bottom impact system can be widely applied to the bottom impact loading test of the automobile power battery, so as to reduce the situation that the staff directly participate in the battery pack puncture test and ensure the personal safety of the staff. The scheme includes two use modes in actual use: 1, the electric servo spring loading device is directly fixed on the ground below the battery test rack, the power battery to be tested is placed on the battery test rack, and then the impact head of the electric servo spring loading device is used to puncture the power battery pack, etc. The electric servo spring loading device is protected by the safety protection device such as the protective shell structure, the impact head can use the existing technology, for example, the commonly used tungsten steel needle; 2, the electric servo spring loading device can also be moved to the bottom of the battery test rack through the traveling mechanism, and the electric servo spring loading device is driven to move away from the bottom of the battery pack after completing the puncture test of the power battery.

[0029] The following embodiments describe the specific implementation process of the scheme in the case of the above-mounted traveling mechanism:

[0030] (1) the loading point at the bottom of the power battery to be tested is marked with a marker pen;

[0031] (2) the power battery is supported and fixed on the ground or test platform through four supports, and appropriate space is left for the power battery bottom impact system;

[0032] (3) Remote control the power battery bottom impact system to walk to the lower part of the power battery, so that the center of the impact head 108 coincides with the loading point;

[0033] (4) The supporting cylinder 208 extends downward, realizing the contact between the bottom surface of the supporting frame 101 and the ground or test platform, the walking mechanism 2 is lifted, and the driving roller 204 and the driven roller 205 are separated from the ground;

[0034] (5) The electric cylinder 121 is controlled to extend upward by the remote controller, the lifting block 1210 arranged at the power output end of the electric cylinder 121 is used to lift the linear bearing 105 upward, and then the impact rod 104 is slowly pushed to extend upward, so that the impact head 108 extends upward until the top end of the impact head 108 contacts the loading point of the power battery, and whether the center of the impact head 108 coincides with the loading point to be impacted is verified by lifting the impact head 108 in advance;

[0035] Preferably, in another embodiment, the above process (5) can also be realized by configuring a non-contact displacement sensor 118 for the system as follows: Figure 3 As shown in the figure, the non-contact displacement sensor 118 and the inductive magnetic sheet 119 are configured in the device, and the inductive magnetic sheet 119 also moves upward along the non-contact displacement sensor 118 during the movement of the impact rod 104, and when the top end of the impact head 108 contacts the loading point of the power battery, the computer records the current position of the impact head 108;

[0036] (6) After the above verification process is completed, the electric cylinder 121 slowly falls to the lowermost part (in the process, the lifting block 1210 is used to lift from below, and the electric cylinder 121 is used to slowly move downward to avoid direct falling of the rack to damage the gear), until the rack 106 on the impact rod 104 is engaged with the shaft gear 115, the above falling process can be realized by relying on the gravity provided by the impact rod 104 and the counterweight block 107, and in the actual use process, the installation number of the counterweight block 107 is adjusted to meet the actual needs;

[0037] (7) After the above process is completed, the test is started, the servo motor 113 controls the shaft gear 115 to rotate to drive the rack 106 to move downward, and then the spring compression seat 109 on the impact rod 104 compresses the spring 117 to a compression length corresponding to the impact energy, and then the computer controls the servo motor 113 to drive the rack 106 and the impact rod 104, and then drives the impact head 108 to impact the bottom of the power battery upward, during which the spring 117 restores, and the servo motor 113 and the spring 117 simultaneously complete the driving of the impact head 108, in the process, the servo motor 113 also controls the impact speed of the impact head 108 to the position (in another embodiment, when the non-contact displacement sensor 118 detects that the top end of the impact head 108 reaches the impact point, the safety pin 111 is pushed out by the electric push rod, after the impact is completed, the bottom of the rack 106 falls on the safety pin 111, preventing the rack 106 from falling on the shaft gear 115 to cause impact damage to the gear and damage the equipment);

[0038] After the loading is completed, the support cylinder 208 is retracted upward until the bottom surface of the support frame 101 is separated from the ground or the test platform, and then the walking mechanism 2 starts to work, and the loading system quickly retreats from the dangerous area according to the set direction and distance; if the power battery smokes or catches fire during the test, the test personnel can manually click the quick stop test on the control cabinet after monitoring by the image visual system, and the loading system will work according to the above steps after the loading is completed, and finally the loading system is quickly retreated from the dangerous area.

[0039] In summary, the power battery bottom impact system can be widely applied to the bottom impact loading test of the power battery of the automobile. If the power battery smokes or catches fire during the test, the intelligent loading test system can quickly retreat from the dangerous area through the walking mechanism 2, so as to ensure the safety of the equipment of the intelligent loading test system;

[0040] When walking, the support cylinder 208 is retracted upward to make the bottom surface of the support frame 101 separate from the ground; when loading, the support cylinder 208 is extended downward by a distance to make the bottom surface of the support frame 101 contact with the ground before loading, so as to avoid the stress on the walking mechanism 2.

[0041] The walking mechanism 2 of the scheme is driven by four wheels on each side, realizes straight walking and turning, and still walks freely when crossing a groove and a flat road with pits.

[0042] The safety protection device 3 of the scheme is made of stainless steel plates to surround the intelligent loading test system except the bottom surface, and the inside is covered with fire-resistant and high-temperature-resistant materials, which plays multiple protection roles such as fireproofing, waterproofing and high-temperature resistance.

[0043] Meanwhile, the mounting mode of the support frame 101 and the walking mechanism 2 in the scheme is that: firstly, the guide column 122 on the support frame 101 is screwed off from the support frame 101, passes through the opening of the linear bearing 207 on the walking mechanism 2 and is screwed on the support frame 101 again (the bottom of the guide column 122 has an external thread structure, and the support frame 101 is provided with a corresponding threaded hole), so that the support frame 101 and the support frame 101 are relatively fixed in the horizontal direction; meanwhile, the support frame 101 is provided with a support seat 123, as shown in the drawing, the support seat 123 has a latch structure, the latch is pulled out and then inserted into the opening on the corresponding part of the side plate of the support frame 101 (the opening is not marked in the drawing, as shown in the drawing), and then the latch is inserted, so as to realize auxiliary fixing. Figure 3 Figure 4

[0044] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should be covered in the scope of the claims and the specification of the utility model.

[0045] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.​​

Claims

1. A power cell bottom impact system, characterized by: Including electric servo spring loading device (1), the electric servo spring loading device (1) is used to provide the vertical upward loading energy required for test for power battery, and the electric servo spring loading device (1) includes impact rod (104), and impact head (108) is installed at the top end of impact rod (104); The power battery to be tested is placed on the battery test rack (4), and the electric servo spring loading device (1) is fixed below the power battery to be tested.

2. The power cell bottom impact system of claim 1, wherein: The electric servo spring loading device (1) includes a support frame (101) arranged at the bottom, a track mounting frame (102) is vertically arranged in the support frame (101), and two tracks (103) are fixed on the inner side of the track mounting frame (102); The impact rod (104) is installed on the track (103) through the linear bearing (105) on the left and right sides.

3. The power cell bottom impact system of claim 2, wherein: The impact rod (104) is installed on the left and right sides, one side is installed rack (106), and the other side is installed counterweight block (107); The upper end of the impact rod (104) on the side of the counterweight block (107) is also provided with a spring pressing seat (109).

4. The power cell bottom impact system of claim 2, wherein: The support frame (101) is provided with a safety pin sleeve (110), and the sleeve is provided with a safety pin (111); The tail end of the safety pin (111) is connected with a safety pin electric push rod (112).

5. The power cell bottom impact system of claim 2, wherein: The support frame (101) is provided with a servo motor (113), and the power output end of the servo motor (113) is connected with a shaft gear (115) through a shaft coupling (114).

6. The power cell bottom impact system of claim 2, wherein: The track mounting frame (102) is provided with a guide rod (116) on one side, and the guide rod (116) is connected with the track mounting frame (102) at the bottom and the top; The spring (117) is sleeved on the guide rod (116).

7. The power cell bottom impact system of claim 2, wherein: The track mounting frame (102) is also provided with a linear guide rail (120), and the bottom of the track mounting frame (102) is provided with an electric cylinder (121); The power output end of the electric cylinder (121) is connected with a lifting block (1210), and the lifting block (1210) is provided with a corresponding sliding block structure on the side of the linear guide rail (120); The lifting block is arranged below the linear bearing (105).

8. The power cell bottom impact system of claim 1, wherein: Including safety protection device (3), the safety protection device (3) has a sealing structure with a through hole on the outer top, and the safety protection device (3) is covered outside the power battery bottom impact system.

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