Battery pack testing device

Abstract

The utility model discloses a battery pack testing device, which comprises a shell suitable for accommodating a battery pack, the shell is provided with an inner binding post and an outer binding post which are connected through a wire, the inner binding post is suitable for being connected with high-voltage and low-voltage wire harnesses of the battery pack, and the outer binding post is suitable for being connected with a vehicle; the laser distance measuring sensor is arranged in the shell and is suitable for measuring the deformation degree of the battery pack; and the negative pressure assembly is connected with the shell and is suitable for forming air negative pressure in the shell. By testing the battery pack under the high-altitude condition, the deformation condition of the battery pack under the high-altitude condition can be found in time, safe operation of the battery pack under different altitude areas is guaranteed, and therefore the safety of the whole vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery production, and specifically to a battery pack testing device. Background Art

[0002] The power battery pack and system are mainly used to provide power for new energy vehicles. Due to the working environment and characteristics of the battery pack, the whole system is a sealed system. At present, as the use scenarios of new energy vehicles are becoming more and more extensive, they may cross different altitudes during driving. Due to the sealing of the battery pack, when crossing higher altitudes, the imbalance between external pressure and internal pressure may cause the upper shell of the battery pack to swell, affecting the safety of the battery pack. Since the battery pack is installed at the bottom of the vehicle, if the gap between the upper shell of the battery pack and the bottom of the vehicle is unreasonable, once the upper shell is deformed, it may cause the whole vehicle to malfunction.

[0003] Therefore, a battery pack high-altitude testing device is needed to perform high-altitude testing on the battery pack to ensure the safety of the entire vehicle. Utility Model Content

[0004] Based on this, it is necessary to propose a battery pack testing device to address the above technical issues.

[0005] The battery pack test device includes:

[0006] A housing adapted to accommodate a battery pack, the housing being provided with inner terminals and outer terminals for wire connection, the inner terminals being adapted to connect high and low voltage wiring harnesses of the battery pack, and the outer terminals being adapted to connect to a vehicle;

[0007] A laser distance measuring sensor, which is disposed in the housing and is suitable for measuring the degree of deformation of the battery pack;

[0008] The negative pressure component is connected to the shell and is suitable for forming air negative pressure in the shell.

[0009] In some embodiments, the housing comprises:

[0010] A shell, one side of which is opened;

[0011] A hinged door, which is rotatably connected to the housing and can open or block the opening of the housing;

[0012] The fixing piece is arranged on the shell and the hinged door and is suitable for sealingly connecting the shell and the hinged door.

[0013] In some embodiments, it also includes:

[0014] The displacement component is arranged in the housing and connected to the laser distance sensor, and is suitable for changing the position of the laser distance sensor.

[0015] In some embodiments, the displacement assembly includes:

[0016] The first bracket and the second bracket are respectively suitable for being placed on two sides of the battery pack;

[0017] The two ends of the crossbeam are respectively connected to the first bracket and the second bracket, and the laser distance measuring sensor is arranged on the crossbeam.

[0018] In some embodiments, the displacement assembly further comprises:

[0019] The first movable locking member and the second movable locking member are respectively fixed to the two ends of the crossbeam, and the crossbeam can be moved or fixed on the first bracket and the second bracket through the first movable locking member and the second movable locking member;

[0020] The third movable locking piece is movably arranged on the crossbeam, and the laser distance measuring sensor is fixed on the third movable locking piece. The laser distance measuring sensor can be moved or fixed on the crossbeam through the third movable locking piece.

[0021] In some embodiments, the first bracket includes:

[0022] The first supporting rod;

[0023] One end of the first vertical rod is fixedly connected to the first supporting rod and is connected to the first movable locking member.

[0024] In some embodiments, the second bracket comprises:

[0025] A second supporting rod;

[0026] One end of the second vertical rod is fixedly connected to the second supporting rod and is connected to the second movable locking member.

[0027] In some embodiments, the first movable locking member comprises:

[0028] A cylindrical member, wherein a movable cavity is formed therein, and a through hole penetrating the movable cavity is opened on the cylindrical member, and the first vertical rod is movably connected to the cylindrical member through the through hole;

[0029] A piston rod, movably arranged in the movable chamber;

[0030] The spring is arranged in the movable cavity and connected with the cylindrical member and the piston rod. In the initial state, the spring can push the piston rod to press against the first vertical rod.

[0031] In some embodiments, a viewing window is provided on the hinged door.

[0032] In some embodiments, the negative pressure assembly includes:

[0033] An air pump adapted to create a negative air pressure within the housing;

[0034] An air pipe connected to the air pump and the housing;

[0035] The stop valve is installed on the air pipe and is suitable for controlling the on and off of the air pipe.

[0036] Compared with the prior art, the beneficial effects of this application are:

[0037] Improve safety: By testing the battery pack under high-altitude conditions, the deformation of the battery pack under high-altitude conditions can be discovered in time, ensuring the safe operation of the battery pack in different altitude areas, thereby improving the safety of the entire vehicle.

[0038] Improve test accuracy: By setting internal and external terminals, the battery can be connected to the vehicle during the test to detect whether the battery pack will expand at high altitudes and during normal charging and discharging, thereby more realistically simulating the battery pack testing environment and helping to improve test accuracy.

[0039] Reasonable shell design: The shell structure is equipped with visual windows and movable locking parts, which can facilitate users to observe the deformation of the battery pack. At the same time, the position of the test device can be flexibly adjusted to ensure the accuracy of the battery pack test.

[0040] Air negative pressure control: The negative pressure component is used to form air negative pressure in the shell, which effectively ensures the stability of the test environment and improves the reliability of the test results.

[0041] Combining the above beneficial effects, the battery pack testing device can effectively ensure the safety of the battery pack in different altitude areas, and the test results are accurate and reliable, providing important guarantee for the safe operation of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of an exemplary embodiment of the present application;

[0043] Figure 2 This is a schematic diagram showing a displacement component in an exemplary embodiment of the present application;

[0044] Figure 3 This is a schematic diagram showing a first movable locking member in an exemplary embodiment of the present application.

[0045] In the figure: 11, shell; 12, hinged door; 121, visual window; 2, laser ranging sensor; 3, displacement assembly; 311, first supporting rod; 312, first vertical rod; 32, second bracket; 33, crossbeam; 34, first movable locking member; 341, cylindrical member; 342, piston rod; 343, spring; 344, pull head; 35, second movable locking member; 36, third movable locking member. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 indirectly connected 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 this application can be understood according to specific circumstances.

[0049] As described in the background technology, the power battery pack and system are mainly used to be mounted on new energy vehicles to provide power. Due to the working environment and characteristics of the battery pack, the whole is a sealed system. At present, as the use scenarios of new energy vehicles are becoming more and more extensive, different altitude areas may be crossed during driving. Due to the sealing of the battery pack, when crossing a higher altitude, the imbalance between the external pressure and the internal pressure may cause the upper shell of the battery pack to swell, affecting the safety of the battery pack. Since the battery pack is installed at the bottom of the vehicle, if the gap between the upper shell of the battery pack and the bottom of the vehicle is unreasonable, once the upper shell is deformed, it may cause the whole vehicle to malfunction. Therefore, a high-altitude test device for the battery pack is needed to perform high-altitude testing on the battery pack to ensure the safety of the whole vehicle.

[0050] In order to improve the above problems, the present application proposes a battery pack testing device, referring to Figure 1, which mainly includes: a housing, a laser ranging sensor 2, a displacement component 3 and a negative pressure component (not shown in the figure). The housing is suitable for accommodating a battery pack; the laser ranging sensor 2 is suitable for measuring the deformation degree of the battery pack; the displacement component 3 is suitable for changing the position of the laser ranging sensor 2; and the negative pressure component is suitable for forming air negative pressure in the housing.

[0051] Specifically, in the exemplary embodiment, the housing includes a shell 11, a hinged door 12 and a fixing member (not shown in the figure). The shell 11 is formed into a square box structure, one side of which is open to facilitate the placement and removal of the battery pack; the hinged door 12 is arranged on the opening side of the shell 11, one end of which is rotatably connected to the shell 11 and can open or block the opening of the shell 11; the fixing member is arranged on the shell 11 and the hinged door 12, and is suitable for sealing the shell 11 and the hinged door 12. Further, the fixing member is a lock buckle, which belongs to the prior art and will not be repeated here.

[0052] Furthermore, in the exemplary embodiment, a mounting hole is provided on the hinged door 12, and a visible window 121 made of explosion-proof glass is sealed in the mounting hole to facilitate the staff to monitor the status of the battery pack.

[0053] Furthermore, in the exemplary embodiment, the housing is provided with inner terminals (not shown in the figure) and outer terminals (not shown in the figure) connected by wires, the inner terminals are suitable for connecting the high and low voltage wire harnesses of the battery pack, and the outer terminals are suitable for connecting the vehicle. With such a configuration, it is possible to connect the battery pack to the vehicle during the battery test to detect whether the battery pack will swell in high altitude areas and during normal charging and discharging, thereby more realistically simulating the test environment of the battery pack and helping to improve the test accuracy.

[0054] Specifically, in the exemplary embodiment, the laser ranging sensor 2 is disposed in the housing and is suitable for measuring the deformation degree of the battery pack. Furthermore, it can change its own position through the displacement component 3 to facilitate the staff to select a suitable detection point.

[0055] Specifically, in the exemplary embodiment, referring to Figure 2 and Figure 3 The displacement component 3 is arranged in the shell and connected to the laser ranging sensor 2, and is suitable for changing the position of the laser ranging sensor 2.

[0056] Furthermore, in the exemplary embodiment, the displacement assembly 3 includes a first bracket, a second bracket 32, a crossbeam 33, a first movable locking member 34, a second movable locking member 35 and a third movable locking member 36. The first bracket and the second bracket 32 ​​are respectively suitable for being placed on both sides of the battery pack; the crossbeam 33 is suitable for being placed above the battery pack, and its two ends are respectively connected to the first bracket and the second bracket 32, and the laser distance sensor 2 is arranged on the crossbeam 33. By pushing the first bracket and the second bracket 32, the position of the crossbeam 33 can be changed, thereby moving the laser distance sensor 2.

[0057] Furthermore, in the exemplary embodiment, the first bracket includes a first supporting rod 311 and a first vertical rod 312. The first supporting rod 311 is suitable for horizontal placement, and a plurality of pulleys are arranged on its lower side for easy movement; the first vertical rod 312 is arranged vertically, and one end of the first supporting rod 311 is integrally connected, and the first vertical rod 312 is also connected to the first movable locking member 34 in a cooperative manner.

[0058] Further, in the exemplary embodiment, the structure of the second bracket 32 ​​is correspondingly consistent with that of the first bracket, and will not be described in detail.

[0059] Furthermore, in the exemplary embodiment, the first movable locking member 34 and the second movable locking member 35 are respectively fixed to the two ends of the beam 33, and the beam 33 can be moved or fixed on the first bracket and the second bracket 32 ​​through the first movable locking member 34 and the second movable locking member 35; the third movable locking member 36 is movably arranged on the beam 33, and the laser ranging sensor 2 is fixed on the third movable locking member 36, and the laser ranging sensor 2 can be moved or fixed on the beam 33 through the third movable locking member 36.

[0060] Furthermore, in the exemplary embodiment, the first movable locking member 34, the second movable locking member 35 and the third movable locking member 36 have the same structure. For the convenience of description, the first movable locking member 34 is taken as an example for specific description.

[0061] The first movable locking member 34 includes a cylindrical member 341, a piston rod 342, a spring 343 and a pull head 344. The cylindrical member 341 is formed into a square hollow shell 11 structure, in which an active cavity is formed, and a through hole penetrating the active cavity is provided on the cylindrical member 341, and the first vertical rod 312 is movably connected to the cylindrical member 341 through the through hole; the piston rod 342 is movably arranged in the active cavity, and can move in the active cavity and abut against the first vertical rod 312, or not in contact; the spring 343 is arranged in the active cavity and connected to the cylindrical member 341 and the piston rod 342. In the initial state, the spring 343 can push the piston rod 312. 42 is pressed against the first vertical rod 312; the pull head 344 is passed through the cylindrical member 341 and is connected to the piston rod 342 inside it. When the pull head 344 is pulled, the piston rod 342 moves, the spring 343 extends, and one end of the piston rod 342 is not in contact with the first vertical rod 312, so that the beam 33 can be raised and lowered on the first bracket and the second bracket 32. When the pull head 344 is released, the spring 343 returns to the initial state, and the spring 343 can push the piston rod 342 to press against the first vertical rod 312, thereby fixing the beam 33.

[0062] Similarly, the laser distance measuring sensor 2 can be moved or fixed on the crossbeam 33 via the third movable locking member 36 .

[0063] Specifically, in the exemplary embodiment, the negative pressure assembly (not shown in the figure) is connected to the housing and is suitable for forming negative air pressure in the housing. The negative pressure assembly includes an air pump, an air pipe and a stop valve. The air pump is suitable for forming negative air pressure in the housing; the air pipe is connected to the air pump and the housing; the stop valve is arranged on the air pipe and is suitable for controlling the on and off of the air pipe. By starting the air pump and opening the stop valve, part of the air in the housing can be extracted, thereby simulating the low air pressure state at high altitude.

[0064] In summary, by testing the battery pack under high altitude conditions, the present application can timely discover the deformation of the battery pack under high altitude conditions, ensure the safe operation of the battery pack in different altitude areas, and thus improve the safety of the entire vehicle. By providing internal and external terminals, it is possible to connect it to the vehicle during the battery test to detect whether the battery pack will expand in high altitude areas and during normal charging and discharging, thereby more realistically simulating the testing environment of the battery pack and helping to improve the accuracy of the test. The outer shell structure is provided with a visual window 121 and a movable locking piece, which can facilitate the user to observe the deformation of the battery pack, and can flexibly adjust the position of the test device to ensure the accuracy of the battery pack test.

[0065] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A battery pack testing device, characterized in that ,include: A housing adapted to accommodate a battery pack, the housing being provided with inner terminals and outer terminals for wire connection, the inner terminals being adapted to connect to a high and low voltage wiring harness of the battery pack, and the outer terminals being adapted to connect to a vehicle; A laser distance measuring sensor, which is disposed in the housing and is suitable for measuring the degree of deformation of the battery pack; The negative pressure component is connected to the shell and is suitable for forming negative air pressure in the shell.

2. The battery pack testing device according to claim 1, characterized in that , the housing comprises: A shell, one side of which is opened; a hinged door rotatably connected to the housing and capable of opening or closing an opening of the housing; A fixing member is arranged on the shell and the hinged door and is suitable for sealingly connecting the shell and the hinged door.

3. The battery pack testing device according to claim 1, characterized in that , also includes: A displacement component is arranged in the housing and connected to the laser distance measuring sensor, and is suitable for changing the position of the laser distance measuring sensor.

4. The battery pack testing device according to claim 3, characterized in that , the displacement component comprises: The first bracket and the second bracket are respectively suitable for being placed on two sides of the battery pack; A crossbeam, two ends of which are respectively connected to the first bracket and the second bracket, and the laser ranging sensor is arranged on the crossbeam.

5. The battery pack testing device according to claim 4, characterized in that , the displacement component also includes: A first movable locking member and a second movable locking member are respectively fixed to two ends of the crossbeam, and the crossbeam can be movable or fixed on the first bracket and the second bracket through the first movable locking member and the second movable locking member; The third movable locking member is movably arranged on the cross beam, and the laser distance measuring sensor is fixed on the third movable locking member. The laser distance measuring sensor can be moved or fixed on the cross beam through the third movable locking member.

6. The battery pack testing device according to claim 5, characterized in that , the first bracket includes: The first supporting rod; One end of the first vertical rod is fixedly connected to the first supporting rod and is connected to the first movable locking member.

7. The battery pack testing device according to claim 5, characterized in that , the second bracket includes: A second supporting rod; One end of the second vertical rod is fixedly connected to the second supporting rod and is connected to the second movable locking member.

8. The battery pack testing device according to claim 6, characterized in that , the first movable locking member comprises: A cylindrical member, wherein a movable cavity is formed therein, and a through hole penetrating the movable cavity is formed on the cylindrical member, and the first vertical rod is movably connected to the cylindrical member through the through hole; A piston rod, movably disposed in the movable chamber; The spring is arranged in the movable cavity and connected with the cylindrical member and the piston rod. In an initial state, the spring can push the piston rod to press against the first vertical rod.

9. The battery pack testing device according to claim 2, characterized in that , a visual window is arranged on the hinged door.

10. The battery pack testing device according to claim 1, characterized in that , the negative pressure component comprises: an air pump adapted to form a negative air pressure in the housing; An air pipe connected to the air pump and the housing; The stop valve is arranged on the air pipe and is suitable for controlling the on-off of the air pipe.

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