Box body of power battery pack, power battery pack and vehicle

Abstract

The invention provides a box body of a power battery pack, the power battery pack and a vehicle. The box body comprises a shell and a supporting beam arranged in the shell, the shell comprises two first side beams extending in the first direction and two second side beams located between the two first side beams and extending in the second direction forming an angle with the first direction, a first energy absorption part is arranged in each first side beam, and a second energy absorption part is arranged in each second side beam. A second energy absorption part is arranged in each second side beam, a third energy absorption part is arranged in each supporting beam, and the first energy absorption parts, the second energy absorption parts and the third energy absorption parts are configured to transmit impact force in the first direction and / or the second direction. The first side beam, the second side beam and the supporting beam of the box body of the power battery pack are respectively provided with the corresponding energy absorption parts, so that when the power battery pack is subjected to impact force, the impact force can be transmitted among the first side beam, the second side beam and the supporting beam, stress concentration in the power battery pack is avoided, and the safety of the power battery pack is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to the field of power battery systems for new energy vehicles. More specifically, it relates to a housing for a power battery pack, a power battery pack using the housing, and a vehicle using the power battery pack. Background Technology

[0002] With the continuous development of new energy vehicles, increasingly higher requirements are being placed on battery pack technology, a key technology in this field. The battery pack housing, which carries the battery modules, plays a crucial role in the safety and protection of the power battery pack. When vehicles travel on uneven roads or bumpy sections, vibrations and impacts occur. During collisions, acceleration, and deceleration, instantaneous impact forces are generated, which can damage the battery pack housing structure, such as causing deformation, cracks, or ruptures, affecting the safety of the internal batteries and consequently the safety of the power battery pack during use.

[0003] Therefore, it is necessary to improve the structure of the battery pack housing to enhance its impact resistance and further improve the safety and reliability of the power battery pack. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and provide a power battery pack housing that improves the impact resistance of the battery pack housing in a cost-effective and reliable manner.

[0005] Therefore, according to one aspect of the present invention, a housing for a power battery pack is provided, the housing including a shell and a support beam disposed within the shell, the shell including two first side beams extending along a first direction and two second side beams located between the two first side beams and extending along a second direction at an angle to the first direction, wherein each of the first side beams is provided with a first energy-absorbing portion extending along the first direction, each of the second side beams is provided with a second energy-absorbing portion extending along the second direction, and the support beams are provided with a third energy-absorbing portion extending along the first direction and / or the second direction, the first energy-absorbing portion, the second energy-absorbing portion and the third energy-absorbing portion being configured to transmit impact force along the first direction and / or the second direction.

[0006] Based on the above-described technical concept, the present invention may further include any one or more of the following optional forms.

[0007] In some alternative configurations, the first side beam, the second side beam, and the support beam each have hollow cavities to respectively constitute the first energy-absorbing section, the second energy-absorbing section, and the third energy-absorbing section.

[0008] In some alternative forms, each of the second side beams includes a vertical sidewall extending along the second direction, with the second energy-absorbing portion located on the vertical sidewall and facing outward from the housing.

[0009] In some alternative forms, the first energy-absorbing portion includes upper and lower ribs spaced apart from each other, and the second energy-absorbing portion includes a top wall and a bottom wall spaced apart from each other, wherein one of the upper and lower ribs corresponds to one of the top and bottom walls of the second energy-absorbing portion.

[0010] In some alternative forms, the support beam includes a top wall and a bottom wall extending along the first direction and / or the second direction, and a first support rib and a second support rib disposed between the top wall and the bottom wall and spaced apart from each other.

[0011] In some alternative forms, the third energy-absorbing part is formed by at least one of the top wall of the support beam, the first support rib, the second support rib, and the bottom wall, and the third energy-absorbing part corresponds to one of the upper rib and the lower rib of the first energy-absorbing part.

[0012] In some alternative forms, the first side beam is provided with a support rib extending along the first direction, the support rib being spaced apart from the upper rib and the lower rib and corresponding to one of the first support rib and the second support rib of the support beam.

[0013] In some alternative forms, the cross-sectional structure of the first energy-absorbing part and / or the second energy-absorbing part and / or the third energy-absorbing part is any one of triangle, rectangle, or trapezoid.

[0014] In some alternative forms, each of the first side beams is provided with a mounting portion extending along the first direction facing the outer side of the housing, and a connecting portion is provided between the mounting portion and the first energy-absorbing portion, the cross-sectional dimension of the connecting portion gradually increasing from the mounting portion to the first energy-absorbing portion.

[0015] In some alternative forms, the first side beam is provided with a support rib extending along the first direction, the connecting portion is constructed to be hollow and includes a top wall and a bottom wall spaced apart from each other, one of the top wall and the bottom wall is connected to the first energy-absorbing portion, and the other of the top wall and the bottom wall is connected to the support rib.

[0016] In some alternative forms, the bottom of the first side beam and / or the second side beam and / or the support beam is provided with a protective portion to resist impact forces in the vertical direction.

[0017] According to another aspect of the present invention, a power battery pack is provided, the power battery pack including the aforementioned power battery pack housing and a battery module housed within the housing.

[0018] According to another aspect of the present invention, a vehicle is provided, the vehicle including the above-described power battery pack, wherein each of the first side beams of the housing is provided with a mounting portion extending in a first direction toward the outer side of the housing, and the power battery pack is attached to the vehicle through the mounting portion.

[0019] The present invention provides a first energy-absorbing part, a second energy-absorbing part, and a third energy-absorbing part in the first side beam, the second side beam, and the support beam of the power battery pack, respectively. This allows the impact force to be transmitted between the first side beam, the second side beam, and the support beam when the power battery pack is subjected to an impact, thereby avoiding stress concentration within the power battery pack and improving the safety of the power battery pack. Attached Figure Description

[0020] Other features and advantages of the invention will be better understood through the following detailed description of alternative embodiments in conjunction with the accompanying drawings, in which the same reference numerals identify the same or similar parts, wherein:

[0021] Figure 1 This is a schematic diagram of a power battery pack according to one embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the battery pack housing in the diagram;

[0023] Figure 3 This is a schematic diagram of the transmission trajectory of the impact force within the housing of a power battery pack according to an embodiment of the present invention when it is subjected to an impact in a certain direction.

[0024] Figure 4 yes Figure 2 A side view of the first side beam of the battery pack housing;

[0025] Figure 5 yes Figure 2 A side view of the second side beam of the battery pack housing;

[0026] Figure 6 yes Figure 2 A side view of the support beam of the power battery pack housing;

[0027] Figure 7 The housing of a power battery pack according to one embodiment of the present invention is subjected to... Figure 3 A schematic diagram showing the transmission trajectory of the impact force between the first side beam and the support beam when impacted in the indicated direction; and

[0028] Figure 8 The housing of a power battery pack according to one embodiment of the present invention is subjected to... Figure 3A schematic diagram of the transmission trajectory of the impact force between the first and second side beams when an impact occurs in the indicated direction. Detailed Implementation

[0029] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of particular ways of implementing and using the invention, and are not intended to limit the scope of the invention. The descriptions of the structural positions of various components, such as top, bottom, and other directions, are not absolute but relative. These directional descriptions are appropriate when the various components are arranged as shown in the figures, but they change accordingly when the positions of the components in the figures change.

[0030] In this document, unless otherwise explicitly stated and limited, the terms "installation," "connection," and "fixation," etc., 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 connection 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 document according to the specific circumstances.

[0031] In this article, "horizontal" refers to the direction with a relatively small size, also known as the width direction; "vertical" refers to the direction with a relatively large size, also known as the length direction; and "vertical" refers to the direction that is roughly perpendicular to the ground.

[0032] In this article, "vehicle" refers to a new energy vehicle that uses a power battery pack as its operating power and / or driving power, including but not limited to pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles.

[0033] Typically, a vehicle's power battery pack includes battery modules, a battery pack housing, and a battery management module. The battery pack housing, as the carrier of the battery modules, plays a crucial role in the safety and protection of the power battery pack. After the power battery pack is installed in a vehicle, it will generate impact forces when the vehicle experiences collisions, acceleration, or deceleration. These impact forces may be transmitted from the battery pack housing to the battery modules, potentially causing compression and safety hazards.

[0034] Combination Figure 1 and Figure 2 As shown, a power battery pack according to one embodiment of the present invention includes a battery pack housing, which includes a housing 100 and a top cover (not shown) attached to the housing 100. A plurality of battery modules 200 may be arranged side by side in the housing 100, for example, along the width direction and / or length direction of the battery modules 200 and sealed by the top cover. Figure 1Eight battery modules 200 housed within a housing 100 are illustrated exemplarily. It will be understood that the number and distribution of the battery modules 200 may vary depending on different needs and are not limited to those shown in the figure. Figure 2 As shown, the housing 100 includes a base plate 140 and a plurality of side beams sealingly connected to the base plate 140. The plurality of side beams includes two first side beams 110 extending along a first direction D2 of the housing 100, and two second side beams 120 located between the two first side beams 110 and extending along a second direction D1 at an angle to the first direction D2. Specifically, the first direction D2 is perpendicular to the second direction D1. In the illustrated layout, the first direction D2 can be considered as being along the transverse direction of the housing, and the second direction D1 can be considered as being along the longitudinal direction of the housing. The housing 100 also includes support beams 130 to provide structural support. Figure 2 In the figure, the housing 100 includes a support beam 130 extending along a second direction D1. It is understood that the number and distribution of the support beams 130 vary depending on different needs and are not limited to those shown in the figure. For example, the housing 100 may include multiple support beams 130, which may also extend along a first direction D2.

[0035] Currently, an additional plate is used to resist impact forces between the support beam 130 and the first side beam 110. The inventors discovered that this additional plate is approximately 2mm thick and needs to be attached between the support beam 130 and the first side beam 110 using metal inert gas welding (MIG welding) to increase the attachment strength. This increases the overall weight of the battery pack and the welding cost. Furthermore, this method may cause stress concentration on the additional plate, potentially leading to breakage under significant impact, thus affecting the safety of the battery pack during use.

[0036] The present invention solves the above-mentioned problems by providing multiple energy-absorbing parts within the housing 100. Specifically, a first energy-absorbing part 111 extending along a first direction D2 is provided within the first side beam 110, a second energy-absorbing part 122 extending along a second direction D1 is provided within the second side beam 120, and a third energy-absorbing part extending along the first direction D2 and / or the second direction D1 is provided within the support beam 130. The first energy-absorbing part 111, the second energy-absorbing part 122, and the third energy-absorbing part are adapted to transmit impact forces along the first direction D2 and / or the second direction D1. Thus, as... Figure 3 As shown, when the power battery pack is subjected to, for example, from... Figure 3 When the hollow arrow on the right side of the center is impacted (same as the second direction D1), the first energy-absorbing part 111 of the first side beam 110 can absorb the impact force and redirect it along the direction of the impact. Figure 3The solid arrows in the diagram transmit the impact force to the second side beam 120 and the support beam 130, respectively. This allows the impact force to be transmitted roughly along the entire battery pack housing, dispersing the impact force and reducing stress concentration within the battery pack, thus improving the safety and reliability of the power battery pack. It is understood that the impact force on the power battery pack and the direction of its transmission are not limited to this; they can also, for example, be transmitted along... Figure 3 The opposite direction indicated by the middle arrow and / or along the first direction D2. When the power battery pack is subjected to an impact force along the first direction D2, the second energy-absorbing part 122 of the second side beam 120 can absorb the impact force and transmit the impact force along the first direction D2 to the first side beam 110 and the support beam 130 respectively.

[0037] The following reference Figures 4 to 6 The structure of the first side beam, the second side beam, and the support beam of the battery pack housing according to one embodiment of the present invention is described in detail.

[0038] Reference Figure 4 The first side beam 110 includes a first energy-absorbing portion 111, which is disposed inside the first side beam 110. The first energy-absorbing portion 111 may include upper ribs 111a and lower ribs 111b spaced apart from each other. In this embodiment, the upper rib 111a corresponds to the second energy-absorbing portion 122 of the second side beam 120, and the lower rib 111b corresponds to the third energy-absorbing portion of the support beam 130. It is understood that the arrangement of the first energy-absorbing portion 111, the second energy-absorbing portion 122, and the third energy-absorbing portion may vary depending on different needs. For example, the upper rib 111a of the first energy-absorbing portion 111 may correspond to the third energy-absorbing portion, and the lower rib 111b of the first energy-absorbing portion 111 may correspond to the second energy-absorbing portion 122. Figure 4 In this design, the first energy-absorbing part 111 has a triangular cross-sectional structure to improve its stability. It is understood that the cross-sectional shape of the first energy-absorbing part 111 is not limited to this; it can also be, for example, rectangular, trapezoidal, or other polygonal, as long as it is suitable for transmitting impact force.

[0039] like Figure 4 As shown, the first side beam 110 can be formed as a hollow cube, that is, the first side beam 110 has a hollow cavity to form the first energy-absorbing part 111, and the first side beam 110 can also be provided with a support rib 114 extending along the first direction D2, the support rib 114 being spaced apart from the upper rib 111a and the lower rib 111b. In this way, while maintaining the support strength of the first side beam 110, the weight of the first side beam 110 can be reduced, as well as the overall weight of the power battery pack. In addition, this lightweight design also reduces manufacturing costs.

[0040] In some embodiments, the first side beam 110 facing the outer side of the housing 100, i.e., the side away from the battery module 200, may also be provided with a mounting portion 112 extending along the first direction D2. The mounting portion 112 may be provided with a plurality of mounting holes 112a spaced apart from each other along the first direction D2. Figure 1 As shown in the diagram, mounting hole 112a can be, for example, a threaded hole, in which case the battery pack can be attached to the vehicle using fastening bolts through mounting part 112. It is understood that mounting hole 112a is not limited to this and can be modified as needed. See also... Figure 4 A connecting portion 113 may also be provided between the mounting portion 112 and the first energy-absorbing portion 111. The cross-sectional dimension of the connecting portion 113 gradually increases from the mounting portion 112 toward the first energy-absorbing portion 111 to achieve a smooth connection between the mounting portion 112 and the first energy-absorbing portion 111 and further absorb impact force. In this embodiment, the connecting portion 113 is hollow and includes a top wall 113a and a bottom wall 113b spaced apart from each other. Specifically, as shown... Figure 4 As shown, the top wall 113a of the connecting portion 113 is connected to the first energy-absorbing portion 111, and the bottom wall 113b of the connecting portion 113 is connected to the support rib 114, so as to transition the mounting portion 112 to the first energy-absorbing portion 111 and transmit the impact force. In this way, when the power battery pack is subjected to an impact force in the first direction D2 and / or the second direction D1, the impact force can first act on the mounting portion 112, and then be transmitted to the first energy-absorbing portion 111 and / or the second energy-absorbing portion 122 via the connecting portion 113. Thereafter, the first energy-absorbing portion 111 and / or the second energy-absorbing portion 122 transmit the impact force to the second side beam 120 and / or the first side beam 110 and the support beam 130, respectively. In this way, the mounting portion 112 and the connecting portion 113 can also absorb part of the impact force, further improving the impact resistance of the battery pack housing.

[0041] like Figure 4 As shown, a protective portion 115 can also be provided at the bottom of the first side beam 110. Specifically, the protective portion 115 is provided on the lower surface of the first side beam 110. In this embodiment, the protective portion 115 is shaped like a hook to resist impact forces from the vertical direction D3. For example, when a vehicle accidentally collides with a curb while driving, the power battery pack will be subjected to an impact force along the vertical direction D3. At this time, the protective portion 115 can absorb part of the impact force, reducing the impact force transmitted to the inside of the battery pack housing, thereby reducing damage to the battery module. It is understood that the construction and distribution of the protective portion 115 vary depending on different needs and are not limited to those shown in the figure. For example, the protective portion 115 can also be provided at the bottom of the second side beam 120 and / or the support beam 130 to resist impact forces from the vertical direction D3.

[0042] Reference Figure 5The second side beam 120 includes a vertical sidewall 121 extending along a second direction D1, a second energy-absorbing portion 122 located on the vertical sidewall 121 and facing outward of the housing 100 (i.e., the side opposite to the battery module 200), and a base 123 for supporting the second side beam 120. The second energy-absorbing portion 122 includes a top wall 122a and a bottom wall 122b spaced apart from each other. Figure 5 In this design, the second energy-absorbing part 122 has a hollow rectangular cross-section, meaning it has a hollow cavity. It's understood that the cross-sectional shape of the second energy-absorbing part 122 is not limited to this; it can also be, for example, trapezoidal, triangular, or other polygonal shapes, as long as it is suitable for transmitting impact force. In this way, while maintaining the supporting strength of the second side beam 120, the weight of the second side beam 120 is reduced, as well as the overall weight of the power battery pack. Furthermore, this lightweight design also reduces manufacturing costs.

[0043] Reference Figure 6 The support beam 130 is formed as a hollow cube, that is, the support beam 130 has a hollow cavity to form the third energy-absorbing part, and includes a top wall 131, a bottom wall 134, and a first support rib 132 and a second support rib 133 arranged parallel to each other and spaced apart between the top wall 131 and the bottom wall 134. In this way, the weight of the support beam 130 can be reduced while maintaining the supporting strength of the support beam 130, and the weight of the power battery pack can also be reduced. In addition, this lightweight design also reduces manufacturing costs.

[0044] In some embodiments, the third energy-absorbing portion may be formed by at least one of the top wall 131, the first support rib 132, the second support rib 133, and the bottom wall 134 of the support beam 130, and the third energy-absorbing portion may correspond to one of the upper rib 111a and the lower rib 111b of the first energy-absorbing portion 111, for example, to transmit the impact force along the second direction D2. It is understood that the configuration of the third energy-absorbing portion is not limited to this; for example, the cross-section of the third energy-absorbing portion may be constructed as a rectangle, triangle, trapezoid, etc., to transmit the impact force.

[0045] In some implementations, combined Figure 6 and Figure 7 As shown, the first side beam 110 is also provided with a fixing part 116, and the support beam 130 is provided with corresponding fixing holes to fix the first side beam 110 and the support beam 130. Specifically, the support beam 130 is fixed to the first side beam 110 by a first fixing member 310 and a second fixing member 320. The first fixing member 310 can be, for example, a screw, and the second fixing member 320 can be, for example, a pin, which is not limited here.

[0046] In an exemplary embodiment, when the power battery pack is subjected to an impact force along the second direction D1, the impact force can travel along... Figure 7The directions of arrows A, B, and C shown are transmitted from the first side beam 110 to the support beam 130. Specifically, as... Figure 7 As shown, the impact force is transmitted from the upper surface of the mounting portion 112 through the top wall 113a of the connecting portion 113 to the first energy-absorbing portion 111 of the first side beam 110. Since the lower rib 111b of the first energy-absorbing portion 111 corresponds to the top wall 131 of the support beam 130, the impact force is directly transmitted to the support beam 130 via the lower rib 111b of the first energy-absorbing portion 111 in the direction of arrow A. Thereafter, the impact force is transmitted on the support beam 130 in the second direction D1. In addition, the impact force is transmitted from the lower surface of the mounting portion 112 through the bottom wall 113b of the connecting portion 113 to the support rib 114 of the first side beam 110, and then transmitted inside the support beam 130 in the direction of arrow B. In particular, the support rib 114 can correspond to one of the first support rib 132 and the second support rib 133 of the support beam 130, so that the impact force is directly transmitted to the first support rib 132 or the second support rib 133 via the support rib 114. Furthermore, the impact force can also be transmitted from the lower surface of the mounting portion 112 to the bottom wall 134 of the support beam 130 in the direction of arrow C. In this way, the impact force is transmitted to the support beam 130 via the first energy-absorbing portion 111 of the first side beam 110, so as to absorb and disperse the impact force.

[0047] Additionally, the impact force can also travel along... Figure 8 The directions of arrows D and E shown are transmitted from the first side beam 110 to the second side beam 120. Specifically, as... Figure 8 As shown, the impact force is transmitted from the upper surface of the mounting portion 112 to the first energy-absorbing portion 111 of the first side beam 110 via the top wall 113a of the connecting portion 113. In this embodiment, the upper rib 111a of the first energy-absorbing portion 111 corresponds to the bottom wall 122b of the second energy-absorbing portion 122 of the second side beam 120. Therefore, the impact force is directly transmitted to the second side beam 120 via the lower rib 111b of the first energy-absorbing portion 111 in the direction of arrow D. Afterward, the impact force is transmitted within the second side beam 120 along the second direction D1. In some embodiments, the upper rib 111a of the first energy-absorbing portion 111 may also correspond to the top wall 122a of the second energy-absorbing portion 122 to transmit the impact force to the second side beam 120. Additionally, the impact force is also transmitted from the lower surface of the mounting portion 112 to the base 123 of the second side beam 120 in the direction of arrow E via the connecting portion 113. In this way, the impact force is transmitted to the second side beam 120 via the first energy-absorbing part 111 of the first side beam 110, so as to absorb and disperse the impact force.

[0048] This invention, by respectively incorporating a first energy-absorbing part, a second energy-absorbing part, and a third energy-absorbing part on the first side beam, the second side beam, and the support beam of the battery pack housing, enables the power battery pack to transmit impact force among the first side beam, the second side beam, and the support beam when subjected to impact, thereby absorbing and dispersing the impact force and improving the safety and reliability of the power battery pack. The battery pack housing structure of this invention is simple and cost-effective, and the various energy-absorbing parts are easy to mold, making it suitable for various power battery packs.

[0049] It should be understood here that the embodiments shown in the figures only illustrate the optional shapes, sizes and arrangements of the power battery pack and housing according to the present invention; however, they are merely illustrative and not limiting. Other shapes, sizes and arrangements may be adopted without departing from the spirit and scope of the present invention.

[0050] The technical content and features of the present invention have been disclosed above. However, it is understood that those skilled in the art can make various changes and improvements to the disclosed concepts under the inventive concept of the present invention, all of which fall within the protection scope of the present invention. The description of the above embodiments is illustrative rather than restrictive, and the protection scope of the present invention is determined by the claims.

Claims

1. A housing for a power battery pack, characterized in that, The enclosure includes a shell (100) and support beams (130) arranged within the shell (100). The shell (100) includes two first side beams (110) extending along a first direction (D2) and two second side beams (120) located between the two first side beams (110) and extending along a second direction (D1) at an angle to the first direction (D2). Each of the first side beams (110) is provided with a first energy-absorbing part (111) extending along the first direction (D2), each of the second side beams (120) is provided with a second energy-absorbing part (122) extending along the second direction (D1), and the support beam (130) is provided with a third energy-absorbing part extending along the first direction (D2) and / or the second direction (D1). The first energy-absorbing part (111), the second energy-absorbing part (122) and the third energy-absorbing part are configured to transmit impact force along the first direction (D2) and / or the second direction (D1).

2. The housing of the power battery pack according to claim 1, characterized in that, The first side beam (110), the second side beam (120) and the support beam (130) each have a hollow cavity to form the first energy-absorbing part (111), the second energy-absorbing part (122) and the third energy-absorbing part, respectively.

3. The housing of the power battery pack according to claim 2, characterized in that, Each of the second side beams (120) includes a vertical sidewall (121) extending along the second direction (D1), and the second energy-absorbing portion (122) is located on the vertical sidewall (121) and faces outward from the housing (100).

4. The housing of the power battery pack according to claim 3, characterized in that, The first energy-absorbing part (111) includes an upper rib (111a) and a lower rib (111b) spaced apart from each other, and the second energy-absorbing part (122) includes a top wall (122a) and a bottom wall (122b) spaced apart from each other, wherein one of the upper rib (111a) and the lower rib (111b) corresponds to one of the top wall (122a) and the bottom wall (122b) of the second energy-absorbing part (122).

5. The housing of the power battery pack according to claim 4, characterized in that, The support beam (130) includes a top wall (131) and a bottom wall (134) extending along the first direction (D2) and / or the second direction (D1), and a first support rib (132) and a second support rib (133) arranged between the top wall (131) and the bottom wall (134) and spaced apart from each other.

6. The housing of the power battery pack according to claim 5, characterized in that, The third energy-absorbing part is formed by at least one of the top wall (131) of the support beam (130), the first support rib (132), the second support rib (133), and the bottom wall (134), and the third energy-absorbing part corresponds to one of the upper rib (111a) and the lower rib (111b) of the first energy-absorbing part (111).

7. The housing of the power battery pack according to claim 5, characterized in that, The first side beam (110) is provided with a support rib (114) extending along the first direction (D2). The support rib (114) is spaced apart from the upper rib (111a) and the lower rib (111b) and corresponds to one of the first support rib (132) and the second support rib (133) of the support beam (130).

8. The housing of the power battery pack according to any one of claims 1 to 7, characterized in that, The cross-sectional structure of the first energy-absorbing part (111) and / or the second energy-absorbing part (122) and / or the third energy-absorbing part is any one of triangle, rectangle, or trapezoid.

9. The housing of the power battery pack according to any one of claims 1 to 7, characterized in that, Each of the first side beams (110) has a mounting portion (112) extending along the first direction (D2) on the outer side of the housing (100). A connecting portion (113) is provided between the mounting portion (112) and the first energy-absorbing portion (111). The cross-sectional dimension of the connecting portion (113) gradually increases from the mounting portion (112) to the first energy-absorbing portion (111).

10. The housing of the power battery pack according to claim 9, characterized in that, The first side beam (110) is provided with a support rib (114) extending along the first direction (D2). The connecting part (113) is hollow and includes a top wall (113a) and a bottom wall (113b) spaced apart from each other. One of the top wall (113a) and the bottom wall (113b) is connected to the first energy-absorbing part (111), and the other of the top wall (113a) and the bottom wall (113b) is connected to the support rib (114).

11. The housing of the power battery pack according to any one of claims 1 to 7, characterized in that, The bottom of the first side beam (110) and / or the second side beam (120) and / or the support beam (130) is provided with a protective part (115) to resist the impact force along the vertical direction (D3).

12. A power battery pack, characterized in that, The power battery pack includes a housing according to any one of claims 1 to 11, and a battery module (200) housed within the housing.

13. A vehicle, characterized in that, The vehicle includes a power battery pack according to claim 12, wherein each of the first side beams (110) of the housing has a mounting portion (112) extending in a first direction (D2) toward the outside of the housing, and the power battery pack is attached to the vehicle through the mounting portion (112).

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