Device for simulating driving condition of whole vehicle and battery pack test system

Abstract

The embodiment of the utility model discloses a device for simulating the driving condition of a whole vehicle and a battery pack test system. The device for simulating the driving condition of the whole vehicle comprises supporting frames, and a first cavity is formed between the supporting frames; a second cavity is formed in the cover body, the open surface of the cover body is adjacent to the surface of the first cavity, and the second cavity is used for accommodating a battery pack to be tested; and the air outlet equipment is arranged in the first cavity, and output airflow of the air outlet equipment flows into the second cavity from the first cavity. According to the technical scheme provided by the embodiment of the invention, the driving condition of the whole vehicle can be well simulated, so that when the to-be-tested battery pack is placed in the second cavity of the device for simulating the driving condition of the whole vehicle to test the to-be-tested battery pack, the influence of the driving condition of the whole vehicle on the accuracy of test parameters of the to-be-tested battery pack can be well eliminated. The problem that a test result of a to-be-tested battery pack is deviated due to the fact that an existing battery pack test device cannot simulate the running condition of a whole vehicle is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a device and battery pack testing system that simulates the driving conditions of a vehicle. Background Technology

[0002] With the development of new energy vehicle technology, battery packs, as a core component of new energy vehicles, are subject to increasingly higher requirements for performance and reliability. However, the test results obtained from existing battery packs differ from the actual operating conditions of battery packs in real-world vehicle use, leading to discrepancies in the test results.

[0003] Existing battery pack testing equipment cannot simulate the driving conditions of a complete vehicle, i.e., the conditions under wind, which leads to deviations in the test results of battery packs and has become a technical problem that urgently needs to be solved in the industry. Utility Model Content

[0004] This utility model provides a device and a battery pack testing system for simulating the driving conditions of a vehicle, in order to solve the problem that existing battery pack testing equipment cannot simulate the driving conditions of a vehicle, that is, the conditions under wind, which leads to deviations in the test results of the battery pack.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model embodiment provides a device for simulating the driving conditions of a vehicle, comprising:

[0007] The support frame forms a first cavity between the support frames;

[0008] The cover has a second cavity formed inside it. The open surface of the cover is adjacent to the surface of the first cavity. The second cavity is used to accommodate the battery pack to be tested.

[0009] At least one air outlet device is provided in a first cavity, and the output airflow of the air outlet device flows from the first cavity into a second cavity.

[0010] Optionally, a support frame is used to support the battery pack under test;

[0011] The height of the support frame is adjustable.

[0012] Optionally, the height of the support frame can range from 30cm to 50cm;

[0013] The support frame can be adjusted either pneumatically or hydraulically.

[0014] Optional, the cover includes:

[0015] The sides and top are seamlessly connected.

[0016] The orthographic projection of the top surface of the cover onto the horizontal plane completely covers the orthographic projection of the battery pack under test onto the horizontal plane.

[0017] The side of the cover and a large surface of the battery pack under test are both located on the surface of the support frame near the cover.

[0018] The orthographic projection of the side of the cover onto the horizontal plane does not overlap with the orthographic projection of the battery under test onto the horizontal plane.

[0019] Optionally, the distance from the side of the cover to the side of the battery under test is greater than or equal to 1 cm and less than or equal to 5 cm; the distance from the top surface of the cover to the other large surface of the battery under test near the top surface of the cover is greater than or equal to 5 cm and less than or equal to 10 cm.

[0020] The cover can be transparent or non-transparent.

[0021] Optionally, the surface of the support frame near the cover is provided with a slot for engaging with the edge of the cover.

[0022] Optionally, the battery pack testing system may also include:

[0023] The base includes a first surface and a second surface disposed opposite to each other;

[0024] The support frame is located on the side of the first surface of the base away from the second surface;

[0025] The cover is located on the side of the support frame away from the base;

[0026] The first surface is a plane, and the second surface includes at least one groove.

[0027] Optionally, the first surface of the base includes a first side and a second side disposed opposite to each other, and a third side and a fourth side disposed opposite to each other, wherein the first side and the second side are respectively connected to the third side and the fourth side; the length of the first side is greater than the length of the third side;

[0028] At least part of the support frame's slot extends along the extension direction of the first side.

[0029] Optionally, the first and second sides of the first surface of the base are parallel to each other, and the third and fourth sides are parallel to each other;

[0030] At least part of the support frame's slots are parallel to the first side;

[0031] At least part of the support frame's slot is parallel to the third side;

[0032] The card slot can be either straight or L-shaped.

[0033] The slot is located on one side of the support frame near the edge of the base.

[0034] Optionally, the support frame includes at least two support columns, each of equal height.

[0035] Optionally, the support columns are distributed; the number of support columns is greater than or equal to 2 and less than or equal to 10.

[0036] Optionally, each support column is provided along the first, second, third, and fourth sides;

[0037] The orthographic projection of each support column onto the base is located within the base;

[0038] Each support column is symmetrically arranged with the perpendicular line of the shortest line connecting the first and second sides as the axis of symmetry.

[0039] Optionally, the width of the support column is less than half the width of the third side, and the width of the support column is less than half the width of the fourth side;

[0040] The first cavity formed by each support column is located between the first side and the second side;

[0041] The air outlet is located on the third side, and the airflow output from the air outlet is used to transmit air volume into the first cavity along the extension direction of the first and second sides.

[0042] Optionally, the shape of the orthographic projection of the cover in the horizontal plane is the same as the shape of the orthographic projection of the base in the horizontal plane;

[0043] The area of ​​the cover's orthographic projection on the horizontal plane is less than or equal to the area of ​​the base's orthographic projection on the horizontal plane.

[0044] Optional, the air outlet equipment includes a fan or blower.

[0045] According to another aspect of the present invention, this embodiment provides a battery pack testing system, including the device for simulating vehicle driving conditions provided in any of the above embodiments;

[0046] The battery pack testing system also includes a testing module, which adjusts the output target air volume of the air outlet equipment according to the air volume of the air outlet equipment of the device simulating the driving conditions of the whole vehicle, and tests the target parameters of the battery pack under test.

[0047] Optionally, the test modules include:

[0048] At least one wind speed meter is provided, which is located on the side of the support column of the device simulating the driving conditions of a whole vehicle near the first cavity.

[0049] The wind speed meter is used to detect the current wind speed information in the first cavity of the device that simulates the driving conditions of a whole vehicle;

[0050] The host computer is connected to the wind speed meter and is used to adjust the output target air volume of the air outlet equipment based on the current wind information.

[0051] Optionally, the wind speed meter and the support column are set up in a one-to-one correspondence.

[0052] Optionally, the test module may also include: a temperature sensor;

[0053] A temperature sensor is installed inside the battery pack under test and is used to detect the temperature information of the battery pack under test when the air outlet device outputs the target air volume; and / or, a temperature sensor is installed on the inner surface of the cover of the device simulating the driving conditions of a vehicle and is used to detect the temperature information in the second cavity where the battery pack under test is located when the air outlet device outputs the target air volume.

[0054] The host computer is connected to the temperature sensor. The host computer is used to determine the test results of the battery pack under test under the condition that the air outlet equipment outputs the target air volume, based on the temperature information, current wind force information and target air volume.

[0055] Optionally, the test module also includes:

[0056] A charge / discharge device is used to connect to a battery pack under test and to perform charging and / or discharging tests on the battery pack under test.

[0057] The device for simulating vehicle driving conditions provided in this embodiment of the invention simulates a first cavity between the vehicle chassis and the ground by setting a support frame. During vehicle operation, air flows in and out of the first cavity between the vehicle chassis and the ground. By setting an air outlet device in the first cavity, airflow is allowed to circulate within the first cavity. Furthermore, due to the open surface of the cover, some of the airflow generated by the air outlet device can flow from the first cavity to a second cavity, ensuring airflow around the battery pack under test located in the second cavity. This effectively simulates the operating conditions of the battery pack under test under vehicle driving conditions. Because the air outlet device is located in the first cavity, there is no direct airflow in the second cavity. The partial flow of air from the first cavity into the second cavity further simulates the airflow velocity and flow rate around the battery pack under test under vehicle driving conditions. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0059] Figure 1 This is a schematic diagram of the structure of a device for simulating the driving conditions of a vehicle, provided in an embodiment of this utility model;

[0060] Figure 2 This is a schematic diagram of another device for simulating the driving conditions of a vehicle provided in this embodiment of the present invention;

[0061] Figure 3 This is a schematic diagram of the structure of another device for simulating the driving conditions of a vehicle provided in this embodiment of the present invention;

[0062] Figure 4 This is a schematic diagram of the structure of another device for simulating the driving conditions of a vehicle provided in this embodiment of the present invention;

[0063] Figure 5 This is a schematic diagram of the structure of a battery pack testing system provided in an embodiment of the present invention;

[0064] Figure 6 This is a schematic diagram of another battery pack testing system provided in an embodiment of the present invention. Detailed Implementation

[0065] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0066] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0067] Based on the above-mentioned technical problems, this embodiment proposes the following solutions:

[0068] Figure 1This is a schematic diagram of the structure of a device for simulating the driving conditions of a vehicle, provided in an embodiment of this utility model. See also... Figure 1 The device 100 for simulating the driving conditions of a vehicle provided in this embodiment includes a support frame 1, with a first cavity formed between the support frames 1; a cover 2, with a second cavity formed in the cover 2, the open surface of the cover 2 being adjacent to the surface of the first cavity, and the second cavity being used to accommodate the battery pack 10 to be tested; and at least one air outlet device 3, which is disposed in the first cavity, and the output airflow of the air outlet device 3 flows from the first cavity into the second cavity.

[0069] Specifically, the support frame 1 is a structure used to fix, support, or stabilize the housing 2 and the battery pack 10 under test. A first cavity is formed between the support frames 1. The first cavity can be an open air cavity. The support frame 1 is used to simulate the cavity between the vehicle chassis and the ground.

[0070] The cover 2 is a structure used to enclose the battery pack. The cover 2 is an external protective device for the battery pack, used to isolate it from damage caused by the external environment. A second cavity is formed inside the cover 2. The second cavity is used to place the battery pack 10 to be tested. The cover 2 includes an open surface, which is adjacent to the surface of the first cavity, allowing gas flow between the first and second cavities.

[0071] Air outlet device 3 refers to a device capable of generating airflow, such as a fan or centrifugal fan. Under vehicle driving conditions, airflow rises from the vehicle chassis into the protective cover containing the battery pack. By installing air outlet device 3 within the first cavity, the airflow output by air outlet device 3 flows from the first cavity into the second cavity, thus effectively simulating the ventilation state of the battery pack under vehicle driving conditions.

[0072] The device for simulating vehicle driving conditions provided in this embodiment simulates the first cavity between the vehicle chassis and the ground by setting a support frame 1. During vehicle operation, air flows in and out of the first cavity between the vehicle chassis and the ground. By setting an air outlet device 3 in the first cavity, airflow is allowed to circulate within the first cavity. Furthermore, because the cover 2 has an open surface, some of the airflow generated by the air outlet device 3 can flow from the first cavity to the second cavity, ensuring airflow around the battery pack 10 under test located in the second cavity. This effectively simulates the operating conditions of the battery pack 10 under vehicle driving conditions. Since the air outlet device 3 is located in the first cavity, there is no direct airflow in the second cavity. Some of the airflow from the first cavity flows into the second cavity, which better simulates the airflow velocity and flow rate around the battery pack 10 under vehicle driving conditions.

[0073] Optionally, based on the above embodiments, see also... Figure 1The support frame 1 is used to support the battery pack 10 under test; the height of the support frame 1 is adjustable.

[0074] Specifically, since the open surface of the cover 2 is adjacent to the first cavity, the open surface of the cover 2 corresponds to the fixed position of the battery pack 10 under test. The battery pack 10 under test is placed on the support frame 1, and the support frame 1 provides support for the battery pack 10 under test. This simulates the positional relationship between the battery pack 10 under test and the chassis under the driving conditions of the vehicle.

[0075] By setting the height of the support frame 1 to be adjustable, the height of the support frame 1 can be adapted to different vehicle models, simulating the distance from the chassis to the ground of different vehicle models, thereby improving the adaptability of the device for simulating the driving conditions of the whole vehicle to different vehicle models.

[0076] Optionally, based on the above embodiments, see also... Figure 1 The height range of support frame 1 includes 30cm-50cm; the adjustment method of support frame 1 includes pneumatic adjustment or hydraulic adjustment.

[0077] Specifically, the height range of the support frame 1 refers to the height range after the support frame 1 is adjusted. The support frame 1 can adjust the height of the battery pack 10 under test within the range of 30cm-50cm, thereby better adapting to the distance from the chassis to the ground of different vehicle models, making the state of the battery pack during testing closer to actual use.

[0078] Optional, Figure 2 This is a schematic diagram of another device for simulating vehicle driving conditions provided in an embodiment of this utility model. Based on the above embodiment, see... Figure 2 The cover 2 may include a side surface 21 and a top surface 22, which are seamlessly connected. The orthographic projection of the top surface 22 of the cover 2 on the horizontal plane completely covers the orthographic projection of the battery pack 10 under test on the horizontal plane. The side surface 21 of the cover 2 and a large surface of the battery pack 10 under test are both located on the surface of the support frame 1 near the cover 2. The orthographic projection of the side surface 21 of the cover 2 on the horizontal plane does not overlap with the orthographic projection of the battery under test on the horizontal plane.

[0079] Specifically, the shape of the cover 2 can be a cuboid or the same as the shape of the battery pack. The side surface 21 of the cover 2 refers to the surface of the cover 2 along the direction of gravity. The top surface 22 of the cover 2 is located on the side of the battery pack 10 under test away from the support frame 1. The seamless connection between the side surface 21 and the top surface 22 allows the cover 2 to completely enclose the battery pack 10 under test on the side away from the support frame 1, except for the open surface on the side close to the support frame 1. This configuration better simulates the situation where the battery pack 10 under test is protected by the cover under the conditions of a vehicle, thus better simulating the operating conditions of the battery pack 10 under the conditions of a vehicle in motion.

[0080] The orthographic projection of the top surface 22 of the cover 2 onto the horizontal plane completely covers the orthographic projection of the battery pack 10 under test onto the horizontal plane. The orthographic projection of the side surface 21 of the cover 2 onto the horizontal plane does not overlap with the orthographic projection of the battery under test onto the horizontal plane, so that the second cavity formed inside the cover 2 can be sufficiently accommodated to hold the battery pack 10 under test, making it easy to place the battery pack 10 under test into the second cavity to simulate the driving conditions of the whole vehicle.

[0081] The side 21 of the cover 2 and a large surface of the battery pack 10 under test are both located on the surface of the support frame 1 near the cover 2. This arrangement ensures that both the cover 2 and the battery pack 10 under test are supported by the support frame 1.

[0082] Optionally, based on the above embodiments, see also... Figure 2 The distance from the side 21 of the cover 2 to the side 21 of the battery under test is greater than or equal to 1cm and less than or equal to 5cm; the distance from the top surface 22 of the cover 2 to the other large surface of the battery under test near the top surface 22 of the cover 2 is greater than or equal to 5cm and less than or equal to 10cm; the cover 2 is a transparent cover 2 or a non-transparent cover 2.

[0083] Specifically, the distance from the side 21 of the cover 2 to the side 21 of the battery under test is greater than or equal to 1cm and less than or equal to 5cm. This setting can ensure that the battery under test can be placed in the second cavity, and also make the size of the support frame 1 and the cover 2 match the battery pack 10 under test. This is conducive to the miniaturization of the cover 2, and thus to the miniaturization design of the device that simulates the driving conditions of the whole vehicle.

[0084] The distance between the top surface 22 of the cover 2 and the other large surface of the battery under test near the top surface 22 of the cover 2 is greater than or equal to 5cm and less than or equal to 10cm. This setting makes the distance between the top surface 22 of the battery pack 10 under test and the cover 2 larger, which is convenient for setting up sensors for parameters such as ambient temperature and wind speed inside the cover 2, and facilitates testing.

[0085] The cover 2 can be either transparent or opaque. The material of the cover 2 can be metal or non-metal. For example, the material of the cover 2 can be acrylic, tempered glass, epoxy resin, etc. When the cover 2 is transparent, it facilitates observation and testing of the battery pack 10 under test.

[0086] Optionally, based on the above embodiments, see also... Figure 2 The support frame 1 has a slot (not shown in the figure) on the side of the cover 2. The slot is used to engage with the edge of the cover 2.

[0087] Specifically, since the support frame 1 contacts the edge of the side 21 of the cover 2, a slot is provided on the surface of the support frame 1 on the side close to the cover 2, so that the edge of the side 21 of the cover 2 can be placed in the slot, thereby fixing the cover 2 to the support frame 1 in a better way.

[0088] Optional, Figure 3 This is a structural schematic diagram of another device for simulating vehicle driving conditions provided by an embodiment of this utility model. Based on the above embodiment, see... Figure 3 The battery pack testing system 200 further includes: a base 4, which includes a first surface S1 and a second surface S2 disposed opposite to each other; a support frame 1 disposed on the side of the first surface S1 of the base 4 away from the second surface S2; and a cover 2 disposed on the side of the support frame 1 away from the base 4. The first surface S1 is a plane, and the second surface S2 includes at least one groove 6.

[0089] Specifically, the first surface S1 of the base 4 is used to place the support frame 1. Since the first surface S1 is flat, the support frame 1 can be stably set on the first surface S1 of the base 4. The second surface S2 of the base 4 is provided with at least one groove 6 to facilitate the transportation or movement of the base 4, for example, to facilitate the movement or transportation of the device simulating the driving conditions of a whole vehicle using a forklift or other means.

[0090] Optional, Figure 4 This is a structural schematic diagram of another device for simulating vehicle driving conditions provided by an embodiment of this utility model. Based on the above embodiment, see... Figure 4 The first surface S1 of the base 4 includes a first side a1 and a second side a2 arranged opposite to each other, and a third side a3 and a fourth side a4 arranged opposite to each other. The first side a1 and the second side a2 are respectively connected to the third side a3 and the fourth side a4. The length of the first side a1 is greater than the length of the third side a3. At least part of the slot of the support frame 1 extends along the extension direction of the first side a1.

[0091] Specifically, the first side a1 is the long side, and at least part of the slot of the support frame 1 extends along the extension direction of the first side a1, so as to facilitate the engagement of the cover 2 with the support frame 1 along the direction of the first side a1.

[0092] Optionally, based on the above embodiments, see also... Figure 4 The first side a1 and the second side a2 of the first surface S1 of the base 4 are parallel to each other, and the third side a3 and the fourth side a4 are parallel to each other; at least part of the slot of the support frame 1 is parallel to the first side a1; at least part of the slot of the support frame 1 is parallel to the third side a3; the shape of the slot includes a straight line or an L-shape; the slot is located on the side of the support frame 1 near the edge of the base 4.

[0093] Specifically, the first side a1 and the second side a2 of the first surface S1 of the base 4 are parallel to each other, and the third side a3 and the fourth side a4 are parallel to each other, making the shape of the first surface S1 of the base 4 rectangular. This arrangement allows the slot to be positioned in the direction of the support frame 1 extending along the third side a3. The shape of the slot can be set as a straight line or an L-shape as needed, without any limitation. Alternatively, some slots can be set as straight lines, while the slots located at the corners of the support frame 1 can be set as L-shapes.

[0094] The slot is positioned on the side of the support frame 1 near the edge of the base 4, making the outer edge of the cover 2 basically flush or completely aligned with the outer edge of the base 4. This further facilitates the miniaturization of the device simulating vehicle driving conditions. This design makes the entire device for simulating vehicle driving conditions compact, easy to operate, and possesses good versatility and expandability. It can be widely applied in various stages of electric vehicle battery pack research and development, production, and quality testing, providing stronger support for the development of the battery pack industry.

[0095] Optionally, based on the above embodiments, see also... Figure 4 The support frame 1 includes at least two support columns 11, and each support column 11 has the same height.

[0096] Specifically, the support frame 1 includes at least two support columns 11, which are used to support the battery pack 10 under test and the housing 2. Setting all support columns 11 to the same height allows the support frame 1 to support the battery pack 10 under test more stably, improving the stability of the battery pack testing performance.

[0097] Optionally, based on the above embodiments, see also... Figure 4 The support columns 11 are distributed in a dispersed manner; the number of support columns 11 is greater than or equal to 2 and less than or equal to 10.

[0098] Specifically, this design ensures sufficient airflow within the first cavity. The number of support columns 11 can be determined based on their load-bearing capacity. This design allows for a balance between support capacity and airflow, resulting in a hollow structure at the bottom of the battery pack 10 under test, making its condition during testing more closely resemble actual usage.

[0099] Optionally, based on the above embodiments, see also... Figure 4 Each support column 11 is set along the first side a1, the second side a2, the third side a3 and the fourth side a4; the orthographic projection of each support column 11 on the base 4 is located inside the base 4; each support column 11 is symmetrically set with the perpendicular line of the shortest line between the first side a1 and the second side a2 as the axis of symmetry.

[0100] Specifically, each support column 11 is arranged along the first side a1, the second side a2, the third side a3 and the fourth side a4, which makes the first cavity larger and facilitates the airflow output by the air outlet device 3 to flow into the first cavity, thereby better simulating the airflow influence on the battery pack 10 under the vehicle driving conditions.

[0101] Optionally, based on the above embodiments, see also... Figure 4 The width of the support column 11 is less than half the width of the third side a3, and the width of the support column 11 is less than half the width of the fourth side a4; the first cavity formed by each support column 11 is located between the first side a1 and the second side a2; the air outlet device 3 is disposed on the third side a3, and the output airflow of the air outlet device 3 is used to transmit air volume into the first cavity along the extension direction of the first side a1 and the second side a2.

[0102] Specifically, this arrangement makes the first cavity formed between each support column 11 larger, which facilitates the output airflow of the air outlet device 3 to be used to transmit air volume into the first cavity along the extension direction of the first side a1 and the second side a2, which is beneficial to further improve the simulation realism of the device simulating the driving conditions of the whole vehicle.

[0103] Optionally, based on the above embodiments, see also... Figure 4 The shape of the orthographic projection of the cover 2 on the horizontal plane is the same as the shape of the orthographic projection of the base 4 on the horizontal plane; the area of ​​the orthographic projection of the cover 2 on the horizontal plane is less than or equal to the area of ​​the orthographic projection of the base 4 on the horizontal plane.

[0104] Specifically, this design facilitates the matching of the dimensions of the cover 2 and the base 4, thereby enabling the miniaturization of the device simulating the driving conditions of a vehicle. This design also provides a better simulation of the protection status of the vehicle's underside, more realistically and comprehensively restoring the working environment of the battery pack 10 under test during actual driving, and significantly improving the accuracy of the simulated conditions.

[0105] Optionally, the air outlet device 3 includes a fan or blower.

[0106] Specifically, the air outlet device 3 can be selected as needed. Furthermore, the location and number of air outlet devices 3 can be selected according to the requirements of the device simulating the vehicle's driving conditions. For example, the air outlet device 3 can be placed at the end of the battery pack 10 under test that has a battery management system, which facilitates the simulation of real-world vehicle driving conditions.

[0107] Figure 5 This is a schematic diagram of a battery pack testing system provided in an embodiment of the present invention. Based on the above embodiment, see [link to other embodiments]. Figure 5The battery pack testing system 200 provided in this embodiment includes the device 100 for simulating vehicle driving conditions provided in any of the above embodiments. The battery pack testing system 200 may further include: a testing module 20, used to adjust the output target air volume of the air outlet device 3 according to the air volume of the air outlet device 3 of the device 100 simulating vehicle driving conditions, and to test the target parameters of the battery pack 10 under test.

[0108] Specifically, the device 100 simulating vehicle driving conditions provides the battery pack 10 under test with simulated vehicle driving conditions. The test module 20 can detect the airflow of the air outlet device 3 of the device 100 simulating vehicle driving conditions. The test module 20 can test the target parameters of the battery pack 10 under test based on the detected airflow of the air outlet device 3 of the device 100 simulating vehicle driving conditions. This configuration makes the test results of the battery pack 10 under test closer to the state of the battery pack 10 under vehicle driving conditions, thereby improving the accuracy of the test of the battery pack 10 under vehicle driving conditions.

[0109] Optional, Figure 6 This is a schematic diagram of another battery pack testing system provided in an embodiment of the present invention. Based on the above embodiment, see... Figure 6 Based on the above embodiments, the test module 20 may include: at least one wind speed meter 30, which is disposed on the side of the support column 11 of the device 100 simulating the driving conditions of a whole vehicle close to the first cavity; the wind speed meter 30 is used to detect the current wind force information in the first cavity of the device 100 simulating the driving conditions of a whole vehicle; and a host computer 40 connected to the wind speed meter 30, which is used to adjust the output target air volume of the air outlet device 3 according to the current wind force information.

[0110] Specifically, the wind speed meter 30 is positioned on the side of the support column 11 of the device 100 simulating vehicle driving conditions, near the first cavity, which makes the testing results of the wind speed meter 30 more accurate. The wind speed meter 30 can measure the wind speed at the bottom of the battery pack 10 under test in real time and transmit the data to the host computer 40. The host computer 40 adjusts the output target air volume of the air outlet device 3 in real time based on the current wind information fed back by the wind speed meter 30. This setting realizes the joint adjustment between the air outlet device 3 and the host computer, which facilitates the control of the wind speed of the air outlet device 3 according to the power of the vehicle driving conditions, making the simulated vehicle driving conditions of the device 100 more realistic and the testing results of the battery pack under test more accurate. The host computer 40 controls the wind speed of the air outlet device 3 according to the power parameters of the vehicle driving conditions, more realistically simulating the wind speed environment at the bottom of the battery pack during vehicle driving.

[0111] Optionally, based on the above embodiments, see also... Figure 6The wind speed measuring instrument 30 is set up in a one-to-one correspondence with the support column 11.

[0112] Specifically, it can better collect the air volume in the first cavity, which facilitates the improvement of the adjustment accuracy of the air outlet device 3.

[0113] Optionally, based on the above embodiments, see also... Figure 6 The test module 20 may further include: a temperature sensor 201; the temperature sensor 201 is installed inside the battery pack 10 under test, and is used to detect the temperature information of the battery pack 10 under test when the air outlet device 3 outputs the target airflow; and / or, the temperature sensor 201 is installed on the inner surface of the cover 2 of the device 100 simulating the driving conditions of a vehicle, and is used to detect the temperature information in the second cavity where the battery pack 10 under test is located when the air outlet device 3 outputs the target airflow; the host computer 40 is connected to the temperature sensor 201, and the host computer 40 is used to determine the test result of the battery pack 10 under test when the air outlet device 3 outputs the target airflow based on the temperature information, the current wind force information, and the target airflow.

[0114] Specifically, the temperature sensor 201 can collect temperature information around or inside the battery pack under test in real time and transmit the temperature information to the host computer 40. This setting can effectively collect temperature information inside the battery pack 10 under test. It can also collect temperature information around the battery pack 10 under test, which allows the host computer 40 to determine the test results of the battery pack 10 under test based on the temperature information, current wind speed information, and target airflow, thereby improving the accuracy of the performance and reliability assessment of the battery pack 10 under vehicle driving conditions.

[0115] Optionally, based on the above embodiments, see also... Figure 6 The test module 20 may also include a charging and discharging device (not shown in the figure) for connecting to the battery pack 10 under test. The charging and discharging device is used to perform charging and / or discharging tests on the battery pack 10 under test.

[0116] Specifically, the host computer 40 can be used to set the vehicle operating condition simulation parameters and start the charging and discharging equipment. The charging and discharging equipment can effectively simulate the charging or discharging state of the battery pack 10 under test during vehicle operation, so as to perform charging and discharging tests on the battery pack 10 under test. This setting ensures the accuracy of the charging and discharging performance test of the battery pack 10 under vehicle operating conditions. The charging and discharging equipment can communicate and coordinate with the temperature sensor 201 to achieve a high degree of automation and precise control during the test process, significantly improving test efficiency and the reliability and consistency of test data, and reducing errors caused by manual intervention.

[0117] In an optional implementation, the battery pack testing system 200 may further include a communication line (not shown in the figure), which is connected between the temperature sensor 201, the wind speed meter 30, the battery pack 10 under test, and the host computer 40, for communicating between the temperature sensor 201, the wind speed meter 30, the battery pack 10 under test, and the host computer 40.

[0118] The host computer 40 records the test data transmitted by the air outlet device 3, the wind speed meter 30 and the temperature sensor 201, and analyzes and processes the test data to evaluate the performance and reliability of the battery pack 10 under simulated vehicle operating conditions.

[0119] The battery pack testing system 200 provided in this embodiment provides simulated vehicle driving conditions to the battery pack 10 under test through a device 100 that simulates vehicle driving conditions. The testing module 20 can detect the airflow of the air outlet device 3 of the device 100 simulating vehicle driving conditions. The testing module 20 can test the target parameters of the battery pack 10 under test based on the detected airflow of the air outlet device 3. Because the air outlet device 3 is installed in the first cavity, airflow occurs within the first cavity. Furthermore, because the cover 2 has an open surface, some of the airflow generated by the air outlet device 3 can flow from the first cavity to the second cavity, ensuring airflow around the battery pack 10 under test located in the second cavity, thus better simulating the driving conditions of the battery pack 10 under vehicle driving conditions. This setting makes the test results of the battery pack 10 under test closer to the state of the battery pack 10 under the driving conditions of the whole vehicle, thereby improving the accuracy of the test of the battery pack 10 under the driving conditions of the whole vehicle.

[0120] In one optional implementation, this embodiment provides a method for using a battery pack testing system. The method includes: First, placing the battery pack under test on a support frame of a device simulating vehicle driving conditions, with a cover covering the upper part of the battery pack. The device simulating vehicle driving conditions can be placed in an environmental chamber for testing. Second, connecting the battery pack under test, a temperature sensor, an anemometer, and a host computer via a communication cable. Third, setting the vehicle driving condition simulation parameters on the host computer and starting the charging and discharging equipment to perform a charging and discharging test on the battery pack under test. Fourth, controlling the wind speed of the air outlet device according to the power of the vehicle driving conditions to simulate the wind speed environment at the bottom of the battery pack under test during vehicle operation. Fifth, the anemometer tests the wind speed information at the bottom of the battery pack under test and transmits the detected wind speed information to the host computer. Sixth, the temperature sensor collects the temperature information around or inside the battery pack under test in real time and transmits this temperature information to the host computer. Seventh, the host computer records the wind speed and temperature information transmitted by the air outlet equipment, wind speed meter and temperature sensor, and analyzes and processes the test data to evaluate the performance and reliability of the battery pack under test under simulated vehicle driving conditions.

[0121] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A device for simulating the driving conditions of a vehicle, characterized in that, include: Support frames, wherein a first cavity is formed between the support frames; A cover having a second cavity formed therein, the open surface of the cover being adjacent to the surface of the first cavity, the second cavity being used to accommodate the battery pack to be tested; At least one air outlet device is disposed in the first cavity, and the output airflow of the air outlet device flows from the first cavity into the second cavity.

2. The apparatus according to claim 1, characterized in that, The support frame is used to support the battery pack under test; The height of the support frame is adjustable.

3. The apparatus according to claim 1, characterized in that, The height range of the support frame includes 30cm-50cm; The support frame can be adjusted by pneumatic or hydraulic means.

4. The apparatus according to claim 1, characterized in that, The cover includes: The sides and top surface are seamlessly connected; The orthographic projection of the top surface of the cover onto the horizontal plane completely covers the orthographic projection of the battery pack under test onto the horizontal plane. The side of the cover and a large surface of the battery pack under test are both located on the surface of the support frame near the cover. The orthographic projection of the side of the cover onto the horizontal plane does not overlap with the orthographic projection of the battery under test onto the horizontal plane.

5. The apparatus according to claim 4, characterized in that, The distance from the side of the cover to the side of the battery under test is greater than or equal to 1 cm and less than or equal to 5 cm; the distance from the top surface of the cover to the other large surface of the battery under test near the top surface of the cover is greater than or equal to 5 cm and less than or equal to 10 cm. The cover can be a transparent cover or a non-transparent cover.

6. The apparatus according to claim 1, characterized in that, The support frame has a slot on the side of the cover that is close to the cover, and the slot is used to engage with the edge of the cover.

7. The apparatus according to claim 1, characterized in that, The device for simulating vehicle driving conditions also includes: The base includes a first surface and a second surface disposed opposite to each other; The support frame is disposed on the side of the first surface of the base away from the second surface; The cover is located on the side of the support frame away from the base; The first surface is a plane, and the second surface includes at least one groove.

8. The apparatus according to claim 7, characterized in that, The first surface of the base includes a first side and a second side disposed opposite to each other, and a third side and a fourth side disposed opposite to each other, wherein the first side and the second side are respectively connected to the third side and the fourth side; the length of the first side is greater than the length of the third side; At least a portion of the slot of the support frame extends along the extension direction of the first side.

9. The apparatus according to claim 8, characterized in that, The first and second sides of the first surface of the base are parallel to each other, and the third and fourth sides are parallel to each other; At least a portion of the slots in the support frame are parallel to the first side; At least a portion of the slots in the support frame are parallel to the third side; The shape of the slot includes an "I" shape or an "L" shape; The slot is located on one side of the support frame near the edge of the base.

10. The apparatus according to claim 8, characterized in that, The support frame includes at least two support columns, each of which is of equal height.

11. The apparatus according to claim 10, characterized in that, The support columns are distributed in a dispersed manner; the number of support columns is greater than or equal to 2 and less than or equal to 10.

12. The apparatus according to claim 10, characterized in that, Each of the aforementioned support columns is arranged along the first side, the second side, the third side, and the fourth side; The orthographic projection of each of the support columns onto the base is located within the base; Each of the support columns is arranged symmetrically with the perpendicular line of the shortest line connecting the first side and the second side as the axis of symmetry.

13. The apparatus according to claim 10, characterized in that, The width of the support column is less than half the width of the third side, and the width of the support column is less than half the width of the fourth side; The first cavity formed by each of the support columns is located between the first side and the second side; The air outlet device is located on the third side, and the airflow output by the air outlet device is used to transmit air volume into the first cavity along the extension direction of the first side and the second side.

14. The apparatus according to claim 8, characterized in that, The shape of the cover's orthographic projection on the horizontal plane is the same as the shape of the base's orthographic projection on the horizontal plane; The area of ​​the cover's orthographic projection on the horizontal plane is less than or equal to the area of ​​the base's orthographic projection on the horizontal plane.

15. The apparatus according to claim 1, characterized in that, The air outlet device includes a fan or a blower.

16. A battery pack testing system, characterized in that, include: The apparatus for simulating vehicle driving conditions as described in any one of claims 1 to 15; The battery pack testing system further includes a testing module, used to adjust the target air volume output of the air outlet device according to the air volume of the air outlet device of the device simulating the vehicle driving conditions, and to test the target parameters of the battery pack under test.

17. The testing system according to claim 16, characterized in that, The testing module includes: At least one wind speed meter is provided, wherein the wind speed meter is disposed on the side of the support column of the device simulating the driving conditions of a whole vehicle near the first cavity. The wind speed meter is used to detect the current wind speed information in the first cavity of the device that simulates the driving conditions of a whole vehicle; A host computer is connected to the wind speed meter, and the host computer is used to adjust the output target air volume of the air outlet device according to the current wind information.

18. The testing system according to claim 17, characterized in that, The wind speed measuring instrument is set up in a one-to-one correspondence with the support column.

19. The testing system according to claim 17, characterized in that, The testing module also includes: a temperature sensor; The temperature sensor is disposed inside the battery pack under test, and is used to detect the temperature information of the battery pack under test when the air outlet device outputs the target air volume; and / or, the temperature sensor is disposed on the inner surface of the cover of the device simulating the driving conditions of a vehicle, and is used to detect the temperature information in the second cavity where the battery pack under test is located when the air outlet device outputs the target air volume. The host computer is connected to the temperature sensor. The host computer is used to determine the test results of the battery pack under test under the condition that the air outlet device outputs the target air volume, based on the temperature information, the current wind force information, and the target air volume.

20. The testing system according to claim 16, characterized in that, The testing module also includes: A charging and discharging device is used to connect to the battery pack under test, and the charging and discharging device is used to perform charging and / or discharging tests on the battery pack under test.

Images