Battery pack fixing jig and battery pack impact device

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery pack fixing jig and a battery pack impact device, the battery pack fixing jig can fix a battery pack on an impact test bench, the battery pack comprises a first surface and a second surface which are opposite to each other, the impact test bench can impact vertically upwards, the battery pack fixing jig comprises a supporting piece and a fixing assembly, and the supporting piece is fixedly connected with the fixing assembly. The bottom of the supporting piece can be connected with the upper surface of the impact test bed, an opening cavity is formed in the top of the supporting piece, the fixing assembly comprises a support, the support can be located on the side, away from the first surface, of the second surface, the support comprises a first side and a second side which are opposite, and the first side and the second side detachably cover an opening of the opening cavity. At least one of the first side and the second side can be connected with the battery pack, or the first side detachably covers the opening of the open cavity, and both the first side and the second side can be detachably connected with the battery pack, so that the impact test can be performed in the + / -Z directions of the battery pack.

Description

Battery pack fixing fixture and battery pack impact device Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack fixing fixture and a battery pack impact device. Background Technology

[0002] Impact testing can simulate the mechanical structural stability of a battery pack under external impact, particularly simulating the impact of bumps and vibrations on the battery pack when a vehicle encounters rough road conditions during driving. By processing and analyzing the tested samples, the impact resistance and safety performance of the battery pack can be effectively evaluated. Furthermore, impact testing can quickly identify design flaws in the samples, helping to improve the battery pack's structural design and ensuring its performance safety under external impacts, thereby enhancing vehicle driving safety.

[0003] To improve the reliability of impact testing, impact tests need to be performed in both the +Z and -Z directions of the battery pack. Currently, common impact test benches usually impact in the vertically upward direction, so impact tests can only be performed in the +Z direction of the battery pack and cannot be performed in the -Z direction.

[0004] Therefore, there is an urgent need to propose a battery pack fixing fixture and a battery pack impact device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The first objective of this invention is to provide a battery pack fixing fixture that, when applied to an impact test bench subjected to vertically upward impact, can perform impact tests in both the -Z and +Z directions of the battery pack.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A battery pack fixing fixture is used to fix the battery pack on an impact testing bench. The battery pack includes a first surface and a second surface arranged opposite to each other. The direction from the first surface to the second surface is the -Z direction of the battery pack, and the direction from the second surface to the first surface is the +Z direction of the battery pack. The impact testing bench can impact in a vertically upward direction. The battery pack fixing fixture includes:

[0008] The support member has its bottom configured to connect to the upper surface of the impact test bench, and its top has an opening.

[0009] A fixing assembly includes a support configured on a second surface opposite to a first surface. The support includes a first side and a second side disposed opposite to each other. Both the first and second sides are detachably covered at the opening of an oral cavity. At least one of the first and second sides is used to connect to a battery pack, allowing the battery pack to be located inside the oral cavity or on the side of the support opposite to the support member. Alternatively, the first side is detachably covered at the opening of the oral cavity, and both the first and second sides are used to be detachably connected to the battery pack, allowing the battery pack to be located inside the oral cavity or on the side of the support opposite to the support member.

[0010] Optionally, both the first and second sides can be detachably covered at the opening of the oral cavity, and one of the first and second sides is used to connect to the battery pack.

[0011] Optionally, the battery pack mounting fixture also includes a connecting plate that is connected to the bottom of the support and is configured to be detachably connected to the upper surface of the impact test bench.

[0012] Optionally, the mounting assembly also includes a fastener, through which the support can be detachably connected to the battery pack.

[0013] Optionally, the outer wall of the battery pack is provided with a protruding ridge, the fastener and the support are detachably connected, the fastener is provided with a notch, the notch extends from the side wall of the fastener to the side of the fastener facing the support, and the inner wall of the notch and the support can cooperate to clamp the protruding ridge.

[0014] Optionally, the support member has a hollow structure, and the hollow structure is connected to the opening.

[0015] Optionally, the perforated structure is distributed along the circumference of the support member.

[0016] Optionally, the support includes multiple enclosures, which are connected end to end in sequence to form an open cavity.

[0017] Optionally, two adjacent panels can be connected by a mortise and tenon joint.

[0018] The second objective of this invention is to provide a battery pack impact device. The impact test bench of the battery pack impact device impacts the battery pack in a vertically upward direction, and the battery pack impact device can perform impact tests in both the -Z direction and the +Z direction of the battery pack.

[0019] To achieve this objective, the present invention adopts the following technical solution:

[0020] The battery pack impact device includes an impact drive, an impact test bench, and the aforementioned battery pack fixing fixture. The drive end of the impact drive is connected to the impact test bench, and the impact drive is used to drive the impact test bench to impact in a vertically upward direction. The bottom of the support is connected to the upper surface of the impact test bench.

[0021] The beneficial effects of this utility model are:

[0022] When impact testing is required in the -Z direction of the battery pack, the support cover is placed at the opening of the oral cavity, and the battery pack is connected to the support so that the battery pack is located inside the oral cavity. Since the support is located on the side of the second surface away from the first surface, the first surface is facing down and the second surface is facing up. When the impact test bench impacts in a vertically upward direction, the impact force on the battery pack is in the direction from the first surface to the second surface, thus realizing impact testing in the -Z direction of the battery pack.

[0023] When impact testing is required in the +Z direction of the battery pack, the support cover is placed at the opening of the oral cavity, and the second surface is connected to the support, so that the battery pack is located on the side of the support away from the support member. Since the support is located on the side of the second surface away from the first surface, the first surface is facing up and the second surface is facing down. When the impact test bench impacts in a vertically upward direction, the impact force on the battery pack is in the direction from the second surface to the first surface, thus realizing the impact test in the +Z direction of the battery pack.

[0024] It is evident that when this battery pack fixing fixture is applied to an impact test bench that impacts vertically upwards, it can perform impact tests in both the -Z and +Z directions of the battery pack. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the first structure of the battery pack provided in Embodiment 1 of this utility model;

[0026] Figure 2 is a schematic diagram of the second structure of the battery pack provided in Embodiment 1 of this utility model;

[0027] Figure 3 is a schematic diagram of the first structure of the battery pack fixing fixture provided in Embodiment 1 of this utility model;

[0028] Figure 4 is a structural schematic diagram of the support member and connecting plate provided in Embodiment 1 of this utility model;

[0029] Figure 5 is a structural schematic diagram of the support and battery pack provided in Embodiment 1 of this utility model;

[0030] Figure 6 is a schematic diagram of the second structure of the battery pack fixing fixture provided in Embodiment 1 of this utility model;

[0031] Figure 7 is a structural schematic diagram of the fixing component provided in Embodiment 1 of this utility model;

[0032] Figure 8 is a structural schematic diagram of the first enclosure provided in Embodiment 1 of this utility model;

[0033] Figure 9 is a structural schematic diagram of the second enclosure provided in Embodiment 1 of this utility model.

[0034] In the picture:

[0035] 1. Impact test bench; 2. Battery pack; 21. First surface; 22. Second surface; 23. Protruding ridge; 231. First slope; 3. Support; 31. Opening; 321. First enclosure; 321a. First protrusion; 321b. First slot; 322. Second enclosure; 322a. Second protrusion; 322b. Second slot; 41. Support; 411. First side; 412. Second side; 42. Fixing member; 421. Notch; 5. Connecting plate. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] Example 1

[0041] This embodiment provides a battery pack fixing fixture. When the battery pack fixing fixture is applied to an impact test bench that impacts vertically upwards, it can perform impact tests in both the -Z and +Z directions of the battery pack.

[0042] It should be noted that the -Z and +Z directions mentioned above refer to the battery pack. As shown in Figures 1 and 2, the battery pack 2 includes a first surface 21 and a second surface 22 arranged opposite to each other. The direction from the first surface 21 to the second surface 22 is the -Z direction of the battery pack 2, and the direction from the second surface 22 to the first surface 21 is the +Z direction of the battery pack 2. That is, no matter how the battery pack 2 is positioned, the -Z and +Z directions of the battery pack 2 will not change. The battery pack fixing fixture is used to fix the battery pack 2 on the impact test bench 1, and the impact direction of the impact test bench 1 is vertically upward, that is, the impact direction of the impact test bench 1 is the D1 direction in Figure 3.

[0043] As shown in Figures 1 to 6, the battery pack fixing fixture includes a support member 3 and a fixing assembly. The bottom of the support member 3 is configured to connect with the upper surface of the impact test bench 1, and the top of the support member 3 has an opening 31, i.e., the opening of the opening 31 is located at the top of the support member 3. The opening 31 is used to accommodate the battery pack 2. The fixing assembly includes a support 41, which is configured to be located on the side of the second surface 22 opposite to the first surface 21. The support 41 includes a first side 411 and a second side 412 disposed opposite to each other. Both the first side 411 and the second side 412 are detachably covered at the opening of the oral cavity 31. At least one of the first side 411 and the second side 412 is used to connect with the battery pack 2, so that the battery pack 2 can be located inside the oral cavity 31 or on the side of the support 41 away from the support member 3; or, the first side 411 is detachably covered at the opening of the oral cavity 31, and both the first side 411 and the second side 412 are used to detachably connect with the battery pack 2, so that the battery pack 2 can be located inside the oral cavity 31 or on the side of the support 41 away from the support member 3.

[0044] When an impact test is required in the -Z direction of the battery pack 2, as shown in Figure 3, the support 41 is placed over the opening of the oral cavity 31, and the battery pack 2 is connected to the support 41 so that the battery pack 2 is located inside the oral cavity 31. Since the support 41 is located on the side of the second surface 22 away from the first surface 21, the first surface 21 is facing down and the second surface 22 is facing up. When the impact test bench 1 impacts in the vertically upward direction (i.e., the D1 direction), the impact force on the battery pack 2 is in the direction from the first surface 21 to the second surface 22, thus realizing the impact test in the -Z direction of the battery pack 2.

[0045] When an impact test is required in the +Z direction of the battery pack 2, as shown in Figure 6, the support 41 is placed over the opening of the oral cavity 31, and the second surface 22 is connected to the support 41, so that the battery pack 2 is located on the side of the support 41 away from the support member 3. Since the support 41 is located on the side of the second surface 22 away from the first surface 21, the first surface 21 faces upward and the second surface 22 faces downward. When the impact test bench 1 impacts in the vertically upward direction (i.e., the D1 direction), the impact force on the battery pack 2 is in the direction from the second surface 22 to the first surface 21, thus realizing the impact test in the +Z direction of the battery pack 2.

[0046] It can be seen that when the battery pack fixing fixture is applied to the impact test bench 1 that impacts vertically upward, it can perform impact tests in both the -Z direction and the +Z direction of the battery pack 2.

[0047] Furthermore, both the first side 411 and the second side 412 are detachably covered at the opening of the oral cavity 31. The first side 411 is used to connect with the battery pack 2. Thus, when changing the impact direction on the battery pack 2, it is not necessary to remove the battery pack 2 from the support 41. It is only necessary to remove the support 41 from the top of the support member 3, rotate the support 41 180°, and reconnect the support 41 to the top of the support member 3. This structure simplifies the testing operation and improves the testing efficiency. For example, when the impact test of the battery pack 2 in the -Z direction is completed and the impact test in the +Z direction of the battery pack 2 needs to be performed, that is, when the battery pack fixing fixture needs to be changed from the structure in Figure 3 to the structure in Figure 6, it is only necessary to separate the first side 411 from the top of the support member 3, rotate the support 41 180°, and connect the second side 412 to the top of the support member 3 so that the second side 412 covers the opening of the oral cavity 31. In this process, it is not necessary to remove the battery pack 2 from the support 41 to achieve the change of the orientation of the first surface 21 and the second surface 22. After the impact test in the +Z direction of the battery pack 2 is completed, when it is necessary to conduct an impact test in the -Z direction of the battery pack 2, that is, when it is necessary to change the battery pack fixing fixture from the structure in Figure 6 to the structure in Figure 3, it is only necessary to separate the second side 412 from the top of the support member 3, rotate the support 41 180°, and connect the first side 411 to the top of the support member 3, so that the battery pack 2 is located in the opening 31, and the first side 411 covers the opening of the opening 31. In this process, it is not necessary to remove the battery pack 2 from the support 41 to change the orientation of the first surface 21 and the second surface 22.

[0048] In another embodiment, the first side 411 and the second side 412 are detachably covered at the opening of the oral cavity 31, and the second side 412 is used to connect with the battery pack 2. When changing the impact direction on the battery pack 2, it is not necessary to remove the battery pack 2 from the support 41. It is only necessary to remove the support 41 from the top of the support member 3, rotate the support 41 180°, and reconnect the support 41 to the top of the support member 3.

[0049] In this embodiment, the support 41 is provided with a first mounting hole, which extends from the first side 411 to the second side 412. The top of the support member 3 is provided with a first threaded hole. When the first side 411 covers the opening of the oral cavity 31 and is connected to the top of the support member 3, the first side 411 faces the support member 3. A first bolt passes through the first mounting hole and is threaded into the first threaded hole, so that the first side 411 can be detachably covered at the opening of the oral cavity 31. When the second side 412 covers the opening of the oral cavity 31 and is connected to the top of the support member 3, the second side 412 faces the support member 3. A first bolt passes through the first mounting hole and is threaded into the first threaded hole, so that the second side 412 can be detachably covered at the opening of the oral cavity 31.

[0050] Of course, in other embodiments, the first side 411 and the second side 412 can be detachably covered at the opening of the oral cavity 31 by other structures. For example, an iron sheet is provided on the top of the support member 3, and magnets are provided on the first side 411 and the second side 412 respectively. The first side 411 and the second side 412 can be detachably covered at the opening of the oral cavity 31 by the adsorption of the magnets and the iron sheet.

[0051] Optionally, to ensure the reliability of the impact test, the depth of the opening 31 is greater than the distance between the first surface 21 and the second surface 22 of the battery pack 2, so that when the battery pack 2 is located in the opening 31, there is a gap between the first surface 21 and the bottom of the cavity of the opening 31, so as to avoid the bottom of the cavity of the opening 31 hitting the first surface 21 when the battery pack 2 is subjected to an impact test in the -Z direction.

[0052] Optionally, as shown in Figures 3 and 4, the battery pack fixing fixture also includes a connecting plate 5, which is connected to the bottom of the support member 3. The connecting plate 5 is configured to be detachably connected to the upper surface of the impact test bench 1, thereby realizing the detachable connection between the support member 3 and the impact test bench 1, which facilitates the replacement and maintenance of the support member 3.

[0053] Furthermore, the upper surface of the impact test bench 1 is provided with a second threaded hole, and the connecting plate 5 is provided with a second mounting hole. The second bolt passes through the second mounting hole and is threaded into the second threaded hole to achieve a detachable connection between the connecting plate 5 and the upper surface of the impact test bench 1. Of course, in other embodiments, a magnet can be provided on the upper surface of the impact test bench 1, and an iron sheet can be provided on the connecting plate 5. The detachable connection between the connecting plate 5 and the upper surface of the impact test bench 1 can be achieved by the attraction between the magnet and the iron sheet.

[0054] Furthermore, the bottom of the support member 3 is detachably connected to the connecting plate 5 via a third bolt, further facilitating the replacement and maintenance of the support member 3. Specifically, a third threaded hole is provided at the bottom of the support member 3, and a third mounting hole is provided on the connecting plate 5. The third bolt passes through the third mounting hole and is threadedly connected to the third threaded hole.

[0055] Optionally, as shown in Figures 5 and 7, the fixing assembly also includes a fixing member 42, and the support 41 can be detachably connected to the battery pack 2 through the fixing member 42, so as to realize the assembly and disassembly of the battery pack 2 and the support 41.

[0056] Furthermore, the outer wall of the battery pack 2 is provided with a protruding ridge 23. The fixing member 42 is detachably connected to the support 41. The fixing member 42 is provided with a notch 421, which extends from the side wall of the fixing member 42 to the side of the fixing member 42 facing the support 41. The inner wall of the notch 421 and the support 41 can cooperate to clamp the protruding ridge 23. When assembling the battery pack 2 and the support 41, the second surface 22 faces the support 41 and the battery pack 2 is placed on the support 41. Then, the side of the fixing member 42 with the notch 421 faces the protruding ridge 23, and the fixing member 42 is connected to the support 41, so that the protruding ridge 23 is clamped between the inner wall of the notch 421 and the support 41, thereby realizing the connection between the battery pack 2 and the support 41. When it is necessary to remove the battery pack 2 from the support 41, the fixing member 42 is removed from the support 41 to disconnect the battery pack 2 from the support 41.

[0057] Furthermore, there are four protruding ribs 23 and four corresponding fasteners 42. The four protruding ribs 23 are respectively provided on the four side walls of the square battery pack 2, and each protruding rib 23 is clamped in the notch 421 of the corresponding fastener 42, so that the battery pack 2 can be reliably fixed on the support 41. Of course, in other embodiments, the number of protruding ribs 23 and fasteners 42 can also be two, three, or five, etc., which will not be listed here.

[0058] Optionally, as shown in Figure 1, the side of the protruding ridge 23 facing the first surface 21 is a first slope 231, and along the direction from the first surface 21 towards the second surface 22, the first slope 231 is inclined away from the battery pack 2. The inner wall of the notch 421 includes a second slope (not shown in the figure), which is adapted to the first slope 231 to improve the reliability of the inner wall of the notch 421 and the support 41 clamping the protruding ridge 23.

[0059] Optionally, the support 41 is provided with a fourth threaded hole, and the fixing member 42 is provided with a fourth mounting hole. The fourth bolt passes through the fourth mounting hole and is threaded into the fourth threaded hole to achieve a detachable connection between the support 41 and the fixing member 42. Of course, in other embodiments, an iron sheet can be provided on the support 41 and a magnet can be provided on the fixing member 42. The detachable connection between the support 41 and the fixing member 42 can be achieved by the attraction between the iron sheet and the magnet.

[0060] Optionally, as shown in Figure 4, the support member 3 includes multiple surrounding plates, which are connected end to end in sequence to form an open mouth 31. This design is simple, and the support member 3 can be made by connecting multiple surrounding plates end to end in sequence, which helps to reduce production costs. In addition, this structure enables the support member 3 to have sufficient structural strength and support stability, so that the support member 3 can meet the impact test requirements.

[0061] In this embodiment, there are four enclosure panels, and each enclosure panel is a flat structure. In other embodiments, three, five, or more flat enclosure panels can be connected end to end to form support member 3; or two L-shaped or C-shaped enclosure panels can be connected to form support member 3. The material of the enclosure panels can be steel plates or other plates with a certain structural strength, and not all of them will be listed here.

[0062] Furthermore, each pair of adjacent panels is connected by a set of mortise and tenon joints. The mortise and tenon joints can further simplify the assembly operation of the support 3, thereby further reducing production costs and improving production efficiency. In addition, the mortise and tenon joints improve the reliability and stability of the connection between the two adjacent panels, providing a strong guarantee for the structural strength and support stability of the support 3.

[0063] Furthermore, each pair of adjacent panels is connected by a fifth bolt to improve the reliability of the connection between adjacent panels.

[0064] Optionally, as shown in Figures 4, 8, and 9, some of the multiple enclosures are first enclosures 321, and the remaining enclosures are second enclosures 322. Each of the two opposite sidewalls of the first enclosure 321 is provided with a plurality of first protrusions 321a and a plurality of first slots 321b, and the first protrusions 321a and first slots 321b on the same sidewall of the first enclosure 321 are alternately distributed. For example, the number of first protrusions 321a on the same sidewall of the first enclosure 321 is three, and the number of first slots 321b on the same sidewall of the first enclosure 321 is two. The second enclosures 322 are opposite... Both sidewalls of the first and second panels 321 are provided with a plurality of second protrusions 322a and a plurality of second slots 322b. The second protrusions 322a and the second slots 322b on the same sidewall of the second panel 322 are alternately distributed. For example, there are two second protrusions 322a on the same sidewall of the second panel 322 and three second slots 322b on the same sidewall of the second panel 322. The first protrusion 321a is inserted into the second slot 322b and the second protrusion 322a is inserted into the first slot 321b, thereby realizing the assembly of the first panel 321 and the second panel 322.

[0065] Of course, in other implementations, the mortise and tenon structure can also be in other forms. For example, some of the multiple panels are first panels 321, and the remaining panels are second panels 322. The first panels 321 have insertion holes on both sides opposite to each other, and the second panels 322 have insertion strips on both sides opposite to each other. The insertion strips are inserted into the insertion holes to realize the assembly of the first panels 321 and the second panels 322.

[0066] Optionally, the support member 3 has a hollow structure, and the hollow structure is connected to the opening 31. When the battery pack 2 is subjected to an impact test in the -Z direction, the battery pack 2 is located inside the opening 31. At this time, the test status of the battery pack 2 inside the opening 31 can be observed through the hollow structure.

[0067] Furthermore, the perforated structure is distributed along the circumference of the support member 3 to facilitate observation of the battery pack 2 inside the opening 31 at multiple positions along the circumference of the support member 3.

[0068] In this embodiment, the support member 3 is formed by connecting multiple surrounding plates end to end in sequence, and each surrounding plate is provided with an observation hole to form the above-mentioned hollow structure.

[0069] This embodiment also provides a battery pack impact device, which includes a battery pack 2, an impact drive (not shown in the figure), an impact test bench 1, and the aforementioned battery pack fixing fixture. The battery pack 2 includes a first surface 21 and a second surface 22 disposed opposite to each other. The direction from the first surface 21 to the second surface 22 is the -Z direction of the battery pack 2, and the direction from the second surface 22 to the first surface 21 is the +Z direction of the battery pack 2. The driving end of the impact drive is connected to the impact test bench 1, and the impact drive is used to drive the impact test bench 1 to impact in a vertically upward direction. The bottom of the support member 3 is connected to the impact test bench 1. The upper surface is connected, and the support 41 of the fixing component is located on the side of the second surface 22 away from the first surface 21. The first side 411 and the second side 412 are detachably covered at the opening of the oral cavity 31. At least one of the first side 411 and the second side 412 is connected to the battery pack 2, so that the battery pack 2 can be located inside the oral cavity 31 or on the side of the support 41 away from the support member 3; or, the first side 411 is detachably covered at the opening of the oral cavity 31, and the first side 411 and the second side 412 are both detachably connected to the battery pack 2, so that the battery pack 2 can be located inside the oral cavity 31 or on the side of the support 41 away from the support member 3.

[0070] When an impact test is required in the -Z direction of the battery pack 2, as shown in Figure 3, the battery pack 2 is positioned inside the opening 31. Since the support 41 is located on the side of the second surface 22 away from the first surface 21, when the impact test bench 1 impacts in the vertically upward direction (i.e., the D1 direction), the impact force on the battery pack 2 is in the direction from the first surface 21 to the second surface 22, thus realizing the impact test in the -Z direction of the battery pack 2.

[0071] When impact testing is required in the +Z direction of battery pack 2, as shown in Figure 6, battery pack 2 is positioned on the side of support 41 away from support member 3. Since support 41 is located on the side of second surface 22 away from first surface 21, when impact test bench 1 impacts in the vertically upward direction (i.e., D1 direction), the impact force on battery pack 2 is in the direction from second surface 22 to first surface 21, thus realizing impact testing in the +Z direction of battery pack 2.

[0072] The impact test bench 1 of the battery pack impact device impacts in a vertically upward direction, and the battery pack impact device can perform impact tests in both the -Z direction and the +Z direction of the battery pack 2.

[0073] Example 2

[0074] This embodiment provides a battery pack fixing fixture. The following mainly describes the differences between this embodiment and Embodiment 1, while the similarities will not be repeated.

[0075] Both the first side 411 and the second side 412 are detachably covered at the opening of the oral cavity 31, and both the first side 411 and the second side 412 are used to connect with the battery pack 2. When the impact direction on the battery pack 2 is changed, that is, when the orientation of the first surface 21 and the second surface 22 is changed, this structure can improve the flexibility of the operation of the battery pack fixing fixture.

[0076] Specifically, as shown in Figures 3 and 6, when it is necessary to change the orientation of the first surface 21 and the second surface 22, it can be achieved through the following two operation methods.

[0077] In operation mode 1, the support 41 is removed from the top of the support 3, the support 41 is rotated 180°, and then the support 41 is connected to the top of the support 3. During this process, it is not necessary to remove the battery pack 2 from the support 41.

[0078] In the second operation method, the support 41 is removed from the top of the support 3, the battery pack 2 is removed from the support 41, the relative position of the battery pack 2 and the support 41 in the vertical direction is changed, and the support 41 is located on the side of the second surface 22 away from the first surface 21. Then the battery pack 2 is connected to the support 41, and the support 41 is connected to the top of the support 3. In this process, it is not necessary to rotate the support 41 180°.

[0079] In this embodiment, both the first side 411 and the second side 412 can be connected to the battery pack 2 through the fastener 42. The fourth threaded hole on the support 41 extends from the first side 411 to the second side 412. When the battery pack 2 needs to be connected to the first side 411, the fastener 42 is placed on the first side 411, so that the fourth bolt passes through the fourth mounting hole and is threaded into the fourth threaded hole. When the battery pack 2 needs to be connected to the second side 412, the fastener 42 is placed on the second side 412, so that the fourth bolt passes through the fourth mounting hole and is threaded into the fourth threaded hole. Thus, both the first side 411 and the second side 412 can be connected to the battery pack 2 through the fastener 42.

[0080] Example 3

[0081] This embodiment provides a battery pack fixing fixture. The following mainly describes the differences between this embodiment and Embodiment 1, while the similarities will not be repeated.

[0082] The first side 411 is detachably covered at the opening of the oral cavity 31. Both the first side 411 and the second side 412 are used to detachably connect with the battery pack 2, so that the battery pack 2 can be located inside the oral cavity 31 or on the side of the support 41 away from the support member 3, as shown in Figures 3 and 6. When it is necessary to change the orientation of the first surface 21 and the second surface 22, the connection between the first side 411 and the top of the support 41 is disconnected, and the battery pack 2 is removed from the support 41. The relative position of the battery pack 2 and the support 41 in the vertical direction is changed, and the support 41 is ensured to be located on the side of the second surface 22 away from the first surface 21. Then the battery pack 2 is connected to the support 41, and the first side 411 is connected to the top of the support member 3.

[0083] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery pack fixing fixture for fixing a battery pack on an impact testing bench, the battery pack including a first surface and a second surface disposed opposite to each other, the direction from the first surface to the second surface being the -Z direction of the battery pack, and the direction from the second surface to the first surface being the +Z direction of the battery pack, the impact testing bench being capable of impacting in a vertically upward direction, characterized in that... The battery pack fixing fixture includes: a support member (3), the bottom of which is configured to connect with the upper surface of the impact test bench (1), and the top of which is provided with an opening (31); and a fixing assembly, which includes a support (41), the support (41) being configured to be located on the side of the second surface (22) away from the first surface (21), the support (41) including a first side (411) and a second side (412) disposed opposite to each other, the first side (411) and the second side (412) being detachably covered at the opening of the opening (31). At least one of the first side (411) and the second side (412) is used to connect with the battery pack (2) so that the battery pack (2) can be located inside the opening (31) or on the side of the support (41) away from the support member (3); or, the first side (411) is detachably covered at the opening of the opening (31), and both the first side (411) and the second side (412) are used to be detachably connected with the battery pack (2) so that the battery pack (2) can be located inside the opening (31) or on the side of the support (41) away from the support member (3).

2. The battery pack fixing fixture according to claim 1, characterized in that, Both the first side (411) and the second side (412) are detachably covered at the opening of the oral cavity (31), and one of the first side (411) and the second side (412) is used to connect to the battery pack (2).

3. The battery pack fixing fixture according to claim 1, characterized in that, The battery pack fixing fixture also includes a connecting plate (5), which is connected to the bottom of the support (3) and is configured to be detachably connected to the upper surface of the impact test bench (1).

4. The battery pack fixing fixture according to any one of claims 1-3, characterized in that, The fixing assembly also includes a fixing member (42), and the support (41) can be detachably connected to the battery pack (2) via the fixing member (42).

5. The battery pack fixing fixture according to claim 4, characterized in that, The outer wall of the battery pack (2) is provided with a protruding ridge (23). The fixing member (42) is detachably connected to the support (41). The fixing member (42) is provided with a notch (421). The notch (421) extends from the side wall of the fixing member (42) to the side of the fixing member (42) facing the support (41). The inner wall of the notch (421) and the support (41) can cooperate to clamp the protruding ridge (23).

6. The battery pack fixing fixture according to any one of claims 1-3, characterized in that, The support member (3) has a hollow structure, and the hollow structure is connected to the opening (31).

7. The battery pack fixing fixture according to claim 6, characterized in that, The hollow structure is distributed along the circumference of the support member (3).

8. The battery pack fixing fixture according to any one of claims 1-3, characterized in that, The support member (3) includes multiple enclosures, which are connected end to end in sequence to form the opening (31).

9. The battery pack fixing fixture according to claim 8, characterized in that, The two adjacent enclosure panels are connected by a mortise and tenon joint.

10. A battery pack impact device, characterized in that, The device includes an impact drive, an impact test bench (1), and a battery pack fixing fixture as described in any one of claims 1-9. The drive end of the impact drive is connected to the impact test bench (1), and the impact drive is used to drive the impact test bench (1) to impact in the vertically upward direction. The bottom of the support member (3) is connected to the upper surface of the impact test bench (1).

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