Battery pack and electric vehicle

Abstract

This invention provides a battery pack and an electric vehicle. The battery pack has multiple rows of locking members arranged vertically on its side. The vertical projections of each row of locking members are staggered, and / or, the horizontal extension lengths of each row of locking members relative to the same side of the battery pack are different. These locking members cooperate with a locking mechanism on the electric vehicle to lock the battery pack to the vehicle. The multiple rows of locking members, in cooperation with the locking mechanism on the electric vehicle, increase the locking area and improve the stability of the battery pack locking. Because the locking members in each row are staggered in their vertical projections, the locking mechanism can pass through the staggered gaps between the locking members to cooperate with the corresponding locking members, thereby avoiding interference between the locking mechanism and the locking members, and facilitating the standardization of locking member specifications. The different horizontal extension lengths of each row of locking members relative to the same side of the battery pack prevent interference between the locking mechanism and the locking members, and allow for the arrangement of more locking members on the side of the battery pack.

Description

Technical Field

[0001] This invention relates to the field of battery swapping, and particularly to a battery pack and an electric vehicle. Background Technology

[0002] In recent years, new energy vehicles have developed rapidly. Electric vehicles, which rely on batteries as their driving energy, have the advantages of zero emissions and low noise. As the market share and usage frequency of electric vehicles are increasing, electric commercial vehicles, such as electric heavy-duty trucks and electric light-duty trucks, are gradually appearing in their respective application scenarios. At the same time, battery swapping stations for replacing battery packs of electric trucks have been built.

[0003] In existing technologies, a row of locking elements is typically arranged on the side of the battery pack. These locking elements work in conjunction with the locking mechanism on the electric vehicle to lock the battery pack to the electric vehicle. However, because commercial vehicles such as electric trucks have high capacity requirements for battery packs, the battery packs are heavy. Existing locking elements have poor structural strength and load-bearing capacity, and the locking area is small, resulting in poor stability of the battery pack locking mechanism. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the poor structural strength and load-bearing capacity of the locking component in the prior art, which leads to poor stability of the battery pack locking, and to provide a battery pack and an electric vehicle.

[0005] The present invention solves the above-mentioned technical problems by means of the following technical solution: a battery pack, wherein the side of the battery pack is provided with multiple rows of locking members in the vertical direction, the vertical projections of each row of locking members are staggered from each other, and / or the horizontal extension length of each row of locking members relative to the same side of the battery pack is different, the locking members are used to cooperate with the locking mechanism on the electric vehicle to lock the battery pack to the electric vehicle.

[0006] In this design, multiple rows of locking elements are vertically arranged on the side of the battery pack. These rows cooperate with the locking mechanism on the electric vehicle, increasing the locking area, improving locking strength and stability, and thus enhancing the stability of the battery pack locking. Since the locking elements in each row are staggered in their vertical projection, when the locking elements cooperate with the locking mechanism to achieve locking, the locking mechanism can pass through the staggered gaps between the locking elements to cooperate with the corresponding locking elements, thereby avoiding interference between the locking mechanism and the locking elements. This also facilitates the standardization of locking element specifications and simplifies the manufacturing complexity of the locking elements. The different horizontal extension lengths of each row of locking elements relative to the same side of the battery pack allow for staggered horizontal arrangement of the locking elements, further preventing interference between the locking mechanism and the locking elements, and enabling the installation of more locking elements on the side of the battery pack.

[0007] Preferably, the horizontal extension length of each row of locking elements gradually increases from top to bottom.

[0008] In this design, the extension length of each row of locking elements is less than the extension length of the row below it, so that the locking elements are staggered in the extension direction to cooperate with the locking mechanism on the electric vehicle. This avoids interference between the locking mechanism and the locking elements, and also reduces the requirement for the vertical projection of each row of locking elements to be staggered, allowing more locking elements to be installed on the side of the battery pack in length or width.

[0009] Preferably, the locking elements in any row are evenly spaced; and / or,

[0010] The locking element located at the edge along the horizontal direction in any row is positioned near both ends of the battery pack.

[0011] In this design, the equally spaced locking elements make the battery pack more evenly stressed and more stable; the locking elements at the edges are placed close to both ends, allowing for a larger space between each layer of locking elements, which facilitates the cooperation between the locking elements and the locking mechanism and further avoids interference between the locking mechanism and the locking elements.

[0012] Preferably, the side of the battery pack is stepped, and the locking members in different rows are located on different stepped surfaces.

[0013] In this solution, locking components in different rows are arranged on different stepped surfaces. The battery pack structure is used to stagger the locking components in different rows horizontally, which further avoids interference between the locking mechanism and the locking components, facilitates the standardization of locking component specifications, and simplifies the manufacturing complexity of the locking components.

[0014] Preferably, the end of the locking member away from the battery pack is provided with a limiting portion, which is used to limit the locking member in the locking mechanism in the horizontal direction.

[0015] In this solution, by setting a limiting part on the end of the locking member away from the battery pack, the locking member on the battery pack is prevented from disengaging from the locking mechanism located on the electric vehicle in the horizontal direction, thereby improving the safety of the electric vehicle.

[0016] Preferably, the locking member includes a mounting base and a locking shaft, with the two ends of the locking shaft connected to the limiting part and the mounting base respectively, and the projected area of ​​the limiting part on the mounting base being larger than the projected area of ​​the locking shaft on the mounting base.

[0017] In this solution, by setting the axial area of ​​the limiting part to be larger than the axial area of ​​the locking shaft, the limiting part can be locked on the outer surface of the locking mechanism when the locking shaft moves in the horizontal direction, preventing the battery pack from detaching from the vehicle.

[0018] Preferably, at least one end of the limiting portion extends outward from the end of the locking member along the radial direction of the locking member.

[0019] In this design, the other end of the limiting part extends outward along the radial direction of the locking shaft, so that the limiting part has a certain thickness in the axial direction of the locking shaft, thereby increasing the structural strength.

[0020] Preferably, the limiting part is in the shape of a disc, a frustum, a hemisphere, or a rod.

[0021] In this design, during the limiting process, when the limiting part is subjected to a collision of a certain intensity, its special structure is conducive to the dispersion of force.

[0022] Preferably, the locking element includes a mounting base, a locking shaft, and a support shaft. The locking shaft and the support shaft are disposed on opposite sides of the mounting base. The mounting base is used to mount the battery pack. The locking shaft is used to lock or unlock the locking mechanism. The support shaft is used to insert into the side wall of the battery pack and exert force on the battery pack.

[0023] In this design, the mounting base connects the locking component to the battery pack. A support shaft inserts into the battery pack housing, ensuring precise positioning and installation accuracy. When the battery pack is locked to the locking mechanism, forces from both sides of the mounting base, via the locking shaft and support shaft, act on the locking mechanism and the battery pack housing respectively, creating a dual-sided force distribution. This allows the support shaft to share the shear force experienced by the locking shaft during operation, reducing the stress on the connecting components of the mounting base, increasing the fixing strength of the locking component, and extending its service life. Furthermore, the support shaft increases the connection area between the locking component and the battery pack, improving the connection strength, stability, and safety between the locking component and the battery pack, and between the locking component and the locking mechanism. It also increases the stress-bearing area of ​​the battery pack, preventing stress concentration and further extending its service life.

[0024] Preferably, the locking shaft is coaxial with the support shaft;

[0025] And / or, the radial dimension of the locking shaft is not greater than the radial dimension of the support shaft;

[0026] And / or, the extension length of the support shaft is not greater than the extension length of the locking shaft.

[0027] In this design, there is no vertical gap between the locking shaft and the support shaft, avoiding additional bending moments between them and preventing significant deformation of the locking components, thus improving their service life. Furthermore, this structural design allows the battery pack to be stably mounted on the electric vehicle. Since the support shaft needs to extend into the battery pack housing, its radial dimension is not less than that of the locking shaft, increasing its strength and preventing breakage within the battery pack that could affect the locking components' lifespan. The length of the support shaft is not greater than that of the locking shaft, facilitating its insertion into and connection with the battery pack housing. This structural design also improves the ease of locking the locking shaft and the locking mechanism, reducing costs.

[0028] Preferably, the locking shaft and the support shaft are integrally formed;

[0029] Alternatively, the locking shaft and the support shaft are separately configured and connected to both sides of the mounting base respectively.

[0030] In this design, the locking shaft and the support shaft are integrally formed, which improves their strength. The locking shaft and the support shaft are separately set and connected to the two sides of the mounting base respectively. This means that if either the support shaft or the locking shaft is damaged, only the damaged support shaft and the locking shaft need to be replaced to restore normal operation, thereby reducing the cost of use.

[0031] An electric vehicle that includes the aforementioned battery pack.

[0032] Preferably, the electric vehicle is an electric truck.

[0033] In this solution, because the battery pack of the electric truck is relatively heavy, multiple rows of locking components are arranged on the battery pack, which increases the locking area, improves the locking strength and locking stability, and thus improves the stability of the battery pack locking.

[0034] Preferably, there are multiple battery packs, each battery pack is independently locked to the electric vehicle, and the multiple battery packs are arranged along the length direction of the electric vehicle or along the width direction of the electric vehicle.

[0035] In this solution, the battery pack is divided into multiple sub-packs. These sub-packs are lighter and smaller, facilitating installation and promoting standardization. During installation, the battery swapping equipment can easily install the battery packs onto the electric vehicle with higher precision and less likelihood of deviation, while also reducing the requirements for the swapping equipment. When the battery packs are arranged along the length of the electric vehicle, uneven loading during swapping is less likely, and even when only a portion of the battery pack is mounted on the electric vehicle, uneven loading is not a concern. This makes the solution more flexible and adaptable. Furthermore, it facilitates the unlocking mechanism on the swapping equipment to unlock along the gaps between the multiple battery packs, ensuring that the swapping equipment does not interfere with the battery packs as it moves from the side to the bottom of the vehicle. When the battery packs are arranged along the width of the electric vehicle, the compact structure allows for better utilization of the space between the longitudinal beams and on both sides of the vehicle, saving installation space. It also allows for better utilization of the locking mechanism along the length of the longitudinal beams, improving the load-bearing stability of the battery packs and providing convenience for simultaneous swapping from both sides.

[0036] The positive and progressive effects of this invention are as follows:

[0037] Multiple rows of locking elements are vertically arranged on the side of the battery pack. These rows cooperate with the locking mechanism on the electric vehicle, increasing the locking area, improving locking strength and stability, and thus enhancing the stability of the battery pack locking. Because the locking elements in each row are staggered in their vertical projection, when the locking elements cooperate with the locking mechanism to achieve locking, the locking mechanism can pass through the staggered gaps between the locking elements to engage with the corresponding locking elements, thereby avoiding interference between the locking mechanism and the locking elements. The different horizontal extension lengths of each row of locking elements allow for adjustment of the locking mechanism's placement on the electric vehicle, further preventing interference between the locking mechanism and the locking elements, facilitating the standardization of locking element specifications, and simplifying the manufacturing complexity of the locking elements. The different horizontal extension lengths of each row of locking elements relative to the same side of the battery pack ensure that each row of locking elements is staggered horizontally, preventing interference between the locking mechanism and the locking elements, and allowing for the installation of more locking elements on the side of the battery pack. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the battery pack structure of Embodiment 1 of the present invention.

[0039] Figure 2 This is a schematic diagram of the locking component in Embodiment 1 of the present invention.

[0040] Figure 3 This is a schematic diagram of the structure of the locking member and locking mechanism in Embodiment 1 of the present invention.

[0041] Figure 4 This is a schematic diagram of the structure of the frustum-shaped limiting part of the present invention.

[0042] Figure 5 This is a schematic diagram of the hemispherical limiting part of the present invention.

[0043] Figure 6 This is a schematic diagram of the rod-shaped limiting part of the present invention.

[0044] Figure 7 This is a schematic diagram of the locking member with a support shaft according to the present invention.

[0045] Figure 8 This is a partial cross-sectional view of the battery pack and locking mechanism of the present invention, which are equipped with a locking member with a support shaft.

[0046] Figure 9 This is a schematic diagram of the locking component of the present invention, which simultaneously includes a support shaft and a limiting part.

[0047] Figure 10 This is a schematic diagram of the battery pack structure of Embodiment 2 of the present invention.

[0048] Figure 11 This is a schematic diagram of the battery pack structure of Embodiment 3 of the present invention.

[0049] Explanation of reference numerals in the attached figures

[0050] Battery Pack 1

[0051] Locking component 11

[0052] Locking shaft 111

[0053] Mounting bracket 112

[0054] Support shaft 113

[0055] Limiting part 114

[0056] Locking mechanism 2 Detailed Implementation

[0057] The present invention will be described more clearly and completely below with reference to a preferred embodiment and the accompanying drawings.

[0058] Example 1

[0059] like Figures 1-9As shown, this embodiment discloses a battery pack 1. Multiple rows of locking members 11 are vertically arranged on the side of the battery pack 1. The vertical projections of each row of locking members 11 are staggered. The locking members 11 cooperate with the locking mechanism 2 on the electric vehicle to lock the battery pack 1 onto the electric vehicle. The multiple rows of locking members 11 on the side of the battery pack 1, in cooperation with the locking mechanism, increase the locking area, improve the locking strength and stability, and thus enhance the locking stability of the battery pack 1. The battery pack 1 is particularly suitable for single-sided attachment to an electric vehicle, exhibiting high locking stability. Because the locking members 11 in each row are staggered in their vertical projections, when the locking members 11 cooperate with the locking mechanism 2 to achieve locking, the locking mechanism 2 can pass through the staggered gaps between the locking members 11 to cooperate with the corresponding locking member 11, thereby avoiding interference between the locking mechanism 2 and the locking member 11. Furthermore, it facilitates the standardization of the specifications of the locking members 11 and simplifies the manufacturing complexity of the locking members 11. The aforementioned multi-row locking member 11 can be provided on the side of the battery pack 1 along the length or width direction, or the multi-row locking member 11 can be provided on the side of the battery pack 1 along both the length and width directions.

[0060] In this embodiment, the horizontal extension length of each row of locking members 11 relative to the same side of the battery pack 1 is equal, that is, the end of each row of locking members 11 is equidistant from the same side of the battery pack 1. This facilitates the standardization of the locking member 11 specifications and the battery pack 1, simplifying the manufacturing complexity of the locking member 11 and the battery pack 1. In other embodiments, the horizontal extension length of each row of locking members 11 relative to the same side of the battery pack 1 is not equal.

[0061] Specifically, such as Figure 1 As shown, the locking element 11 is in two rows. Of course, in other alternative embodiments, the locking element 11 on the battery pack 1 can be set to more than two rows of other numbers.

[0062] like Figure 1 As shown, the locking elements 11 in any row are equally spaced, which makes the battery pack 1 more evenly stressed and more stable. Of course, in other alternative embodiments, the locking elements 11 in each row can be spaced at any other interval.

[0063] In this embodiment, the locking members 11 located at the edges along the horizontal direction in any row are positioned close to both ends of the battery pack 1. This arrangement allows for a greater degree of spacing between the locking members 11 in each row, facilitating their cooperation with the locking mechanism 2 and further preventing interference from the locking mechanism 2. Of course, in other alternative embodiments, the locking members 11 located at the edges along the horizontal direction in each row may not be positioned close to the ends of the battery pack 1.

[0064] like Figure 2 and Figure 3 As shown, a limiting part 114 is provided at the end of the locking member 11 away from the battery pack 1. The limiting part 114 is used to limit the locking member 11 in the horizontal direction within the locking mechanism 2. The locking mechanism 2 cooperates with the locking member 11 to lock the battery pack 1 onto the electric vehicle. The limiting part 114, in cooperation with the locking mechanism 2, can limit the locking member 11 in the horizontal direction, thereby preventing the battery pack 1 from slipping off the electric vehicle. By providing the limiting part 114 at the end of the locking member 11 away from the battery pack 1, the horizontal displacement of the locking member 11 within the locking mechanism 2 is limited, improving the locking stability and reliability. Furthermore, the locking member 11 is particularly suitable for battery packs 1 that are attached to the electric vehicle on one side, thereby preventing the locking member 11 on the battery pack 1 from detaching from the locking mechanism 2 located on the electric vehicle in the horizontal direction (i.e., the extension direction of the locking member 11) and causing the battery pack 1 to detach from the electric vehicle, thus improving the safety of the electric vehicle.

[0065] like Figure 2 and Figure 3 As shown, the locking member 11 includes a mounting base 112 and a locking shaft 111. The two ends of the locking shaft 111 are respectively connected to a limiting part 114 and the mounting base 112. The projected area of ​​the limiting part 114 on the mounting base 112 is larger than the projected area of ​​the locking shaft 111 on the mounting base 112. The mounting base 112 is mounted on the battery pack 1, and the locking shaft 111 is connected to the mounting base 112. When the locking shaft 111 is locked by the locking mechanism 2, as the locking shaft 111 moves away from the locking mechanism 2 along its own axial direction, the limiting part 114 on the locking shaft 111 will abut against the outer surface of the locking mechanism 2, thereby preventing the battery pack 1 connected to the locking shaft 111 from moving away from the electric vehicle, thus preventing the battery pack 1 from falling off the electric vehicle.

[0066] The projected area of ​​the limiting part 114 on the mounting base 112 is larger than the projected area of ​​the locking shaft 111 on the mounting base 112. This arrangement prevents the locking shaft 111 from leaving the locking and limiting mechanism in the horizontal direction.

[0067] like Figure 2 As shown, one end of the limiting part 114 is connected to the end of the locking shaft 111, and the other end of the limiting part 114 extends outward along the radial direction of the locking shaft 111. The limiting part 114 includes a portion that protrudes from the locking shaft 111 in the radial direction. In the locked state, the portion of the limiting part 114 that protrudes from the locking shaft 111 can abut against the locking mechanism 2 to prevent the locking shaft 111 from leaving the locking mechanism 2 along its axial direction. The limiting part 114 is disc-shaped.

[0068] like Figure 4 and Figure 5As shown, in other alternative embodiments, the limiting part 114 is shaped like a frustum or a hemisphere. During the limiting process of the limiting part 114, when the limiting part 114 is subjected to a collision of a certain intensity, its special structure is conducive to the dispersion of force.

[0069] like Figure 6 As shown, in other alternative embodiments, the limiting portion 114 is rod-shaped, with at least one end of the limiting portion 114 extending outward from the end of the locking member 11 along the radial direction of the locking member 11. The limiting portion 114 and the locking shaft 111 are T-shaped or L-shaped, and the other end of the limiting portion 114 extends outward along the radial direction of the locking shaft 111, thus giving the limiting portion 114 a certain thickness in the axial direction of the locking shaft 111, increasing structural strength. The limiting portion 114 can be engaged with the outer surface of the locking mechanism 2, preventing the locking shaft 111 from disengaging from the locking mechanism 2 along its axial direction and preventing the battery pack 1 from detaching from the electric vehicle.

[0070] like Figure 7 and Figure 8 As shown, in another embodiment, the locking member 11 includes a support shaft 113. The locking shaft 111 and the support shaft 113 are disposed on opposite sides of the mounting base 112. The mounting base 112 is used to be mounted on the battery pack 1. The locking shaft 111 is used to lock or unlock the locking mechanism 2. The support shaft 113 is used to insert into the side wall of the battery pack 1 and exert force on the battery pack 1.

[0071] The mounting base 112 connects the locking element 11 to the battery pack 1. The support shaft 113 is inserted into the housing of the battery pack 1, achieving precise positioning and ensuring installation accuracy. When the battery pack 1 is locked to the locking mechanism 2, forces from both sides of the mounting base 112, through the locking shaft 111 and the support shaft 113, act on the locking mechanism 2 and the housing of the battery pack 1 respectively, forming a bilateral force distribution. This allows the support shaft 113 to share the shear force experienced by the locking shaft 111 during actual operation, reducing the stress on the connecting parts on the mounting base 112, increasing the fixing strength of the locking element 11, and improving its service life. Furthermore, the support shaft 113 increases the connection area between the locking element 11 and the battery pack 1, improving the connection strength, stability, and safety between the locking element 11 and the battery pack 1, and between the locking element 11 and the locking mechanism 2. It also increases the stress-bearing area of ​​the battery pack 1, preventing stress concentration and further improving its service life.

[0072] like Figure 7 and Figure 8As shown, the locking shaft 111 and the support shaft 113 are coaxial, and there is no gap between the locking shaft 111 and the support shaft 113 in the vertical direction. This avoids additional bending moments between the locking shaft 111 and the support shaft 113, thereby preventing large deformation of the locking member 11 and improving its service life. In addition, the above-mentioned structural form also allows the battery pack 1 to be stably attached to the electric vehicle.

[0073] Specifically, the radial dimension of the locking shaft 111 is not greater than the radial dimension of the support shaft 113. Since the support shaft 113 needs to extend into the interior of the battery pack 1 housing, the radial dimension of the support shaft 113 is not less than the radial dimension of the locking shaft 111, which increases the strength of the support shaft 113 and prevents the support shaft 113 from breaking in the battery pack 1 and affecting the service life of the locking component 11.

[0074] Specifically, the extension length of the support shaft 113 is not greater than the extension length of the lock shaft 111, and the length of the support shaft 113 is not greater than the length of the lock shaft 111. This facilitates the connection of the support shaft 113 into the housing of the battery pack 1 and the housing of the battery pack 1. Furthermore, the above-mentioned structural form also improves the ease of locking the lock shaft 111 and the locking mechanism 2, and can reduce costs.

[0075] Specifically, the locking shaft 111 and the support shaft 113 are integrally formed, which improves their strength. Alternatively, in other alternative embodiments, the locking shaft 111 and the support shaft 113 can be separate parts, each connected to one side of the mounting base 112. This separate configuration allows for easy replacement of either the supporting shaft 113 or the locking shaft 111 if either is damaged, thus reducing operating costs.

[0076] In a preferred embodiment, such as Figure 9 As shown, the locking member 11 is provided with both a limiting part 114 and a support shaft 113.

[0077] Example 2

[0078] The structure of the battery pack 1 in this embodiment is the same as that in Embodiment 1, so the same parts will not be repeated. Only the differences will be explained.

[0079] In this embodiment, as Figure 10As shown, the battery pack 1 has multiple rows of locking members 11 arranged vertically on its side. Each row of locking members 11 has a different horizontal extension length relative to the same side of the battery pack 1. The locking members 11 cooperate with the locking mechanism 2 on the electric vehicle to lock the battery pack 1 onto the electric vehicle. The multiple rows of locking members 11 arranged vertically on the side of the battery pack 1, cooperating with the locking mechanism 2 on the electric vehicle, increase the locking area, improve the locking strength and stability, and thus enhance the locking stability of the battery pack 1.

[0080] like Figure 10 As shown, the horizontal extension length of any row of locking members 11 relative to the same side of the battery pack 1 varies. This structural arrangement allows the locking members 11 in each row to be staggered in the horizontal direction, providing more space for the locking members 11 to cooperate with the locking mechanism 2, further preventing the locking mechanism 2 from interfering with the locking members 11, and allowing more locking members 11 to be set on the side of the battery pack 1, which is conducive to the standardization of the battery pack 1 and simplifies the structural complexity of the battery pack 1.

[0081] In this embodiment, the vertical projections of each row of locking members 11 overlap, and the horizontal extension length of each row of locking members 11 gradually increases from top to bottom. Figure 10 As shown, the length of the first row of locking members 11 extending from the side of the battery pack 1 is L1, and the length of the second row of locking members 11 extending from the same side is L2, where L2 is greater than L1. This structural arrangement ensures that the extension length of each row of locking members 11 is less than the extension length of the row below it. The locking members 11 are staggered in the extension direction to cooperate with the locking mechanism 2 on the electric vehicle, avoiding interference between the locking mechanism 2 and the locking members 11. It also reduces the requirement for the vertical projection of each row of locking members 11 to be staggered. Compared to a configuration where the vertical projection of each row of locking members 11 is staggered, this embodiment allows for more locking members 11 to be provided on the side of the battery pack 1 in terms of length or width. Of course, in other alternative embodiments, the horizontal extension length relationship of each row of locking members 11 can also be configured differently, and the number of locking members 11 on the battery pack 1 can be set to two or more rows.

[0082] Example 3

[0083] The structure of the battery pack 1 in this embodiment is the same as that in Embodiment 1, so the same parts will not be repeated. Only the differences will be explained.

[0084] like Figure 11As shown, the side of the battery pack 1 is stepped, with different rows of locking members 11 located on different stepped surfaces. The horizontal extension length of each row of locking members 11 relative to the same side of the battery pack 1 is different. The locking members 11 are used to cooperate with the locking mechanism 2 on the electric vehicle to lock the battery pack 1 onto the electric vehicle. Each row of locking members 11 has the same specifications. Arranging the different rows of locking members 11 on different stepped surfaces achieves horizontal staggering of the locking members 11, further avoiding interference from the locking mechanism 2 with the locking members 11, facilitating the uniformity of the locking member specifications, and simplifying the manufacturing complexity of the locking members 11.

[0085] Specifically, such as Figure 11 As shown, the side of the battery pack 1 includes a first step surface and a second step surface extending vertically. The locking members 11 are arranged in two rows and are respectively disposed on the first step surface and the second step surface. The length of each row of locking members 11 is the same. The length of the locking members 11 in the upper row extending from the first step surface is L3, the length of the locking members 11 in the lower row extending from the second step surface is L3, and the extension length of the locking members 11 in the lower row relative to the first step surface of the battery pack 1 is L4. That is, the horizontal distance between the end of the locking members 11 in the lower row and the first step surface of the battery pack 1 is L4. By setting the steps and placing the locking members 11 in different rows on different step surfaces, the locking members 11 in different rows are staggered in the horizontal direction while achieving the same specification.

[0086] Of course, in other alternative embodiments, the locking elements 11 on the battery pack 1 can be arranged in more than two rows of other quantities.

[0087] Examples 1, 2, and 3 can be used in combination.

[0088] Example 4

[0089] This embodiment discloses an electric vehicle, which includes the aforementioned battery pack 1. The electric vehicle is an electric truck. Because the battery pack 1 of the electric truck is relatively heavy, multiple rows of locking elements 11 are arranged on the battery pack 1. These multiple rows of locking elements 11 cooperate with the locking mechanism 2, increasing the locking area, improving the locking strength and locking stability, and thus enhancing the locking stability of the battery pack 1. The high locking stability makes the battery pack 1 particularly suitable for heavy-duty electric trucks.

[0090] In this embodiment, there are multiple battery packs 1, each battery pack 1 is independently locked to the electric vehicle, and the multiple battery packs 1 are arranged along the length direction of the electric vehicle or along the width direction of the electric vehicle. By disassembling battery pack 1 into multiple sub-packs, the resulting battery pack 1 is smaller and lighter, making it easier to install and promoting standardization. During installation, it facilitates the swapping equipment's installation of battery pack 1 onto the electric vehicle with higher precision and less likelihood of deviation, while also reducing the requirements for the swapping equipment. When battery pack 1 is arranged along the length of the electric vehicle, it is less likely to cause uneven load during swapping, and it also prevents uneven load on the vehicle even when only a portion of the battery pack is mounted, making its use more flexible and adaptable. Furthermore, it facilitates the unlocking mechanism on the swapping equipment to unlock along the gaps between the multiple battery packs, and the swapping equipment will not interfere with the battery packs as it moves from the side to the bottom of the vehicle. When battery pack 1 is arranged along the width of the electric vehicle, the compact structure allows for better utilization of the space between the longitudinal beams and on both sides of the vehicle body, saving installation space. It also allows for better utilization of the locking mechanism along the length of the longitudinal beams, improving the load-bearing stability of the battery pack and providing convenience for simultaneous swapping from both sides.

[0091] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A battery pack, characterized by, The side of the battery pack is provided with multiple rows of locking members along the vertical direction. The side of the battery pack is stepped, and the locking members in different rows are located on different step surfaces. The vertical projections of the locking elements in each row are staggered, and / or the horizontal extension lengths of the locking elements in each row relative to the same side of the battery pack are different. The locking element is used to cooperate with a locking mechanism on the electric vehicle to lock the battery pack onto the electric vehicle.

2. The battery pack of claim 1, wherein, The length of the locking element in each row increases gradually from top to bottom along the horizontal direction.

3. The battery pack of claim 1, wherein, The locking elements in any row are all equally spaced; and / or, The locking element located at the edge along the horizontal direction in any row is positioned near both ends of the battery pack.

4. The battery pack of claim 1, wherein, The locking member has a limiting part at the end away from the battery pack, which is used to limit the locking member in the locking mechanism in the horizontal direction.

5. The battery pack of claim 4, wherein, The locking component includes a mounting base and a locking shaft. The two ends of the locking shaft are respectively connected to the limiting part and the mounting base. The projected area of ​​the limiting part on the mounting base is larger than the projected area of ​​the locking shaft on the mounting base.

6. The battery pack as described in claim 4, characterized in that, At least one end of the limiting portion extends outward from the end of the locking member along the radial direction of the locking member.

7. The battery pack as described in claim 4, characterized in that, The limiting part is in the shape of a disc, a frustum, a hemisphere, or a rod.

8. The battery pack as described in claim 1, characterized in that, The locking component includes a mounting base, a locking shaft, and a support shaft. The locking shaft and the support shaft are disposed on opposite sides of the mounting base. The mounting base is used to mount the battery pack. The locking shaft is used to lock or unlock the locking mechanism. The support shaft is used to insert into the side wall of the battery pack and act on the battery pack.

9. The battery pack as described in claim 8, characterized in that, The locking shaft is coaxial with the support shaft; And / or, the radial dimension of the locking shaft is not greater than the radial dimension of the support shaft; And / or, the extension length of the support shaft is not greater than the extension length of the locking shaft.

10. The battery pack as claimed in claim 8, characterized in that, The locking shaft and the support shaft are integrally formed; Alternatively, the locking shaft and the support shaft are separately configured and connected to both sides of the mounting base respectively.

11. An electric vehicle, characterized in that, It includes the battery pack as described in any one of claims 1-10.

12. The electric vehicle as claimed in claim 11, characterized in that, The electric vehicle in question is an electric truck.

13. The electric vehicle as claimed in claim 11, characterized in that, There are multiple battery packs, each of which is independently locked to the electric vehicle. The multiple battery packs are arranged along the length of the electric vehicle or along the width of the electric vehicle.

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