Battery pack

Abstract

The present application discloses a battery pack. The battery pack comprises a housing, and a high-voltage connector and a limiting bracket which are arranged in the housing. The high-voltage connector comprises a base; a first surface of the base is opposite to the top wall of the housing; the limiting bracket is attached to the side wall of the housing, and the limiting bracket is at least connected to a second surface of the base so as to limit the base; and the second surface of the base and the first surface of the base face in opposite directions.

Description

battery pack

[0001] This application claims priority to Chinese patent applications filed with the China Patent Office on June 30, 2023, with application numbers 202321712402.5 and 202310800816.1, and the entire contents of the above applications are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a battery pack. Background Art

[0003] The high-voltage connector is the power transmission unit of the power battery pack. The power battery pack transmits power and electrical energy to the entire vehicle through the high-voltage connector. Therefore, the high-voltage connector is also the power transmission bridge between the internal power battery pack and the external high-voltage equipment of the entire vehicle. In the related art, the high-voltage connector is connected to the top wall of the shell of the power battery pack by bolts, so that the high-voltage connector is suspended in the accommodating cavity of the shell so that the high-voltage connector is electrically connected to other devices inside the power battery pack to achieve power and electrical energy output. However, based on the design that the high-voltage connector relies on the bolt connection with the top wall of the shell to achieve suspension support, if the bolts become loose, under the action of external forces, such as the pull of gravity of other devices connected to the high-voltage connector, the high-voltage connector will shake or tilt, which will cause the connection between the high-voltage connector and other devices to loosen, affecting the stability of the electrical connection between other devices and the high-voltage connector. SUMMARY OF THE INVENTION

[0004] The present application provides a battery pack to solve the above technical problems.

[0005] The present application provides a battery pack, comprising a housing, a high-voltage connector provided in the housing, and a limiting frame; wherein,

[0006] The high voltage connector includes a base, wherein a first surface of the base is opposite to the top wall of the housing;

[0007] The limiting frame is attached to the side wall of the shell, and the limiting frame is connected to at least the second surface of the base to limit the base, and the second surface of the base is opposite to the first surface of the base. Beneficial effects

[0008] The beneficial effects of the present application are as follows: the battery pack provided by the present application adds a limit frame inside the shell of the power battery pack, the limit frame is attached to the side wall of the shell, and the limit frame is connected to the base of the high-voltage connector, so that the limit frame limits the high-voltage connector in the direction of the external force acting on the high-voltage connector, thereby preventing the high-voltage connector from shaking due to the pulling of the external force, thereby preventing the connection between the high-voltage connector and other devices from loosening due to the shaking of the high-voltage connector, and ensuring the stability of the electrical connection between the high-voltage connector of the power battery pack and other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is an exploded view of a structure of a power battery pack provided in an embodiment of the present application;

[0010] FIG2 is an exploded view of the power battery pack shown in FIG1 from another perspective;

[0011] FIG3 is an enlarged schematic diagram of point A in FIG2 ;

[0012] FIG4 is a perspective view of the limiting frame shown in FIG1 and FIG2;

[0013] FIG5 is a top view of the limiting frame shown in FIG4 ;

[0014] FIG6 is a first side view of the limiting frame shown in FIG4 ;

[0015] FIG7 is a second side view of the limiting frame shown in FIG4;

[0016] FIG8 is a perspective view of the limiting frame shown in FIG1 and FIG2 from another perspective;

[0017] FIG. 9 is an exploded view of the limiting frame and the buffer layer shown in FIG. 1 and FIG. 2 . Modes for Carrying Out the Invention

[0018] As shown in FIG1 and FIG2 , an embodiment of the present application provides a power battery pack 100 , which includes a housing 10 , a conductive member 20 , a high-voltage connector 30 , a battery (not shown in FIG1 ), and a limiting frame 40 .

[0019] The housing 10 is used to accommodate the conductive member 20, the high-voltage connector 30, the battery, and the retaining frame 40. The housing 10 includes an upper housing 11 and a lower housing 12. The upper housing 11 and the lower housing 12 interlock to form a receiving cavity for accommodating the conductive member 20, the high-voltage connector 30, the battery, and the retaining frame 40. The upper housing 11 and the lower housing 12 are fixedly connected by welding or bolting.

[0020] The lower shell 12 can be a hollow structure with one end open, and the upper shell 11 can be a plate-like structure. The upper shell 11 covers the open side of the lower shell 12, so that the upper shell 11 and the lower shell 12 jointly define a receiving cavity. The upper shell 11 and the lower shell 12 can also be hollow structures with one end open, and the open side of the upper shell 11 covers the open side of the lower shell 12. Of course, the housing 10 formed by the upper shell 11 and the lower shell 12 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0021] The top wall of the housing 10 is provided with an opening 101, through which a portion of the high-voltage connector 30 is exposed outside the housing 10, allowing the high-voltage connector 30 to transmit power and electrical energy to an external electrical device. The top wall of the housing 10 is also provided with a fastening groove 102, into which a bolt 103 is assembled to securely connect the top wall of the housing 10 to the high-voltage connector 30.

[0022] The conductive member 20 is disposed within the housing 10 and is used to establish an electrical connection between the high-voltage connector 30 and the battery. The conductive member 20 includes a main positive conductive bar 21, a main negative conductive bar 22, a sub-positive conductive bar 23, and a sub-negative conductive bar 24. The main positive conductive bar 21 extends in the same direction as the main negative conductive bar 22, and the sub-positive conductive bar 23 and the sub-negative conductive bar 24 extend in the same direction. The extension direction of the main positive conductive bar 21 intersects with the extension direction of the sub-positive conductive bar 23. For example, the main positive conductive bar 21 extends in the longitudinal direction of the housing 10, and the sub-positive conductive bar 23 extends in the width direction of the housing 10.

[0023] The conductive part 20 can be made of metal material copper or metal material aluminum. Copper and aluminum are both metal materials with good electrical conductivity. The conductivity of copper is better than that of aluminum, and the density of copper is greater than that of aluminum. However, the cost of making a copper conductive part is higher than the cost of making an aluminum conductive part.

[0024] One end of the main positive conductive bar 21 is connected to the positive terminal of the high-voltage connector 30, and the other end of the main positive conductive bar 21 is connected to the positive terminal of the battery. One end of the main negative conductive bar 22 is connected to the negative terminal of the high-voltage connector 30, and the other end of the main negative conductive bar 22 is connected to the negative terminal of the battery. One end of the sub-positive conductive bar 23 is connected to the positive terminal of the high-voltage connector 30, and the other end of the sub-positive conductive bar 23 is connected to the negative terminal of the battery. One end of the sub-negative conductive bar 24 is connected to the negative terminal of the high-voltage connector 30, and the other end of the sub-negative conductive bar 24 is connected to the negative terminal of the battery.

[0025] There may be multiple batteries, which may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections. Multiple batteries may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire battery system is housed within the housing 10. Of course, the batteries in the power battery pack 100 may also be formed by first connecting multiple batteries in series, in parallel, or in a hybrid configuration to form a battery module, which is then further connected in series, in parallel, or in a hybrid configuration to form a single unit housed within the housing 10. The power battery pack 100 may also include other configurations.

[0026] As shown in Figures 1, 2, and 3, the high-voltage connector 30 further includes a base 31. The conductive member 20 is disposed on a first surface 3101 of the base 31, and the base 31 is insulated from the conductive member 20. Thus, the main positive conductive bar 21 and the sub-positive conductive bar 23 in the conductive member 20 are connected to the positive terminal of the high-voltage connector 30, and the main negative conductive bar 22 and the sub-negative conductive bar 24 in the conductive member 20 are connected to the negative terminal of the high-voltage connector 30. The first surface 3101 of the base 31 is opposite to the top wall of the housing 10, and the plane on which the first surface 3101 lies is parallel to the plane on which the top wall of the housing 10 lies. That is, the direction of the weight force exerted on the high-voltage connector 30 is perpendicular to the plane on which the first surface 3101 lies, and the direction of the weight force exerted on the conductive member 20 is perpendicular to the plane on which the first surface 3101 lies. The plane where the second surface 3102 of the base 31 is located is parallel to the plane where the top wall of the shell 10 is located, and the second surface 3102 of the base 31 is opposite to the first surface 3101 of the base 31, that is, the direction of the high-voltage connector 30's own gravity is perpendicular to the plane where the second surface 3102 is located, and the direction of the conductive part 20's own gravity is perpendicular to the plane where the second surface 3102 is located.

[0027] The limiting frame 40 is attached to the side wall of the shell 10 so that the limiting frame 40 is fixedly arranged on the side wall of the shell 10. The limiting frame 40 and the shell 10 can be fixedly connected by bolts, or by welding, and the welding process can adopt a resistance spot welding process. The resistance spot welding process can avoid the side wall of the shell 10 being welded when the limiting frame 40 and the side wall of the shell 10 are welded, thereby ensuring the airtightness of the shell 10 and reducing the possibility of external water vapor invading the interior of the power battery pack 100 through the shell 10, thereby reducing the possibility of water vapor corrosion inside the shell 10.

[0028] The limiting frame 40 is further connected to at least the second surface 3102 of the base 31 to support and limit the base 31. Based on the connection between the limiting frame 40 and the base 31 of the high-voltage connector 30, the limiting frame 40 supports the base 31, thereby limiting and supporting the base 31 of the high-voltage connector 30 along the direction of gravity of the high-voltage connector 30, that is, the direction of gravity of the conductive member 20.

[0029] Since the limit frame 40 limits the high-voltage connector 30 along the gravity direction of the conductive part 20, the limit frame 40 can limit the conductive part 20 from pulling the high-voltage connector 30 along the gravity direction it is subjected to, ensuring that the high-voltage connector 30 will not shake along the direction of the external force it is subjected to, that is, ensuring that the high-voltage connector 30 will not shake along the gravity direction of the conductive part 20 itself, thereby avoiding the connection between the high-voltage connector 30 and the conductive part 20 and the connection between the high-voltage connector 30 and the top wall of the shell 10 from loosening due to shaking, thereby ensuring the stability of the electrical connection between the high-voltage connector and the battery.

[0030] As shown in Figures 3 to 5, the limiting frame 40 includes a support plate 41 having a limiting portion 411 thereon. The limiting portion 411 is nested with at least a portion of the base 31. The base 31 has a protrusion 311, and the limiting portion 411 is nested with the protrusion 311 of the base 31.

[0031] Similarly, in some other embodiments, the support plate 41 has a protrusion, the base 31 has a groove, and the protrusion of the support plate 41 is nested with the groove of the base 31.

[0032] The plane of the support plate 41 is parallel to the plane of the second surface of the base 31. The direction of gravity acting on the base 31 is perpendicular to the plane of the support plate 41. Therefore, the interaction force exerted on the support plate 41 by the base 31 is perpendicular to the plane of the support plate 41. Therefore, the support plate 41 supports and limits the base 31 of the high-voltage connector 30 along the direction of gravity of the high-voltage connector 30, that is, the direction of gravity of the conductive member 20, thereby preventing the high-voltage connector 30 from shaking along the direction of gravity of the conductive member 20.

[0033] The limiting portion 411 includes a first limiting sub-portion 4111, which is formed by a recessed side edge of the support plate 41, that is, the periphery of the first limiting sub-portion 4111 is not closed. The support plate 41 can have multiple first limiting sub-portions 4111, and the multiple first limiting sub-portions 4111 can be arranged on the same side edge of the support plate 41, or the multiple first limiting sub-portions 4111 can be arranged on different side edges of the support plate 41. The orthographic projection pattern of the first limiting sub-portion 4111 can be different shapes, such as a semicircle, a cone, a U-shape, or a U-shape. The orthographic projection pattern of the first limiting sub-portion 4111 can be a regular pattern or an irregular pattern.

[0034] The protrusion 311 includes a first protrusion 3111, which is nested with the first limiting sub-portion 4111 of the support plate 41. Because the first limiting sub-portion 4111 is formed by a recess in the side edge of the support plate 41, and the recess direction of the side edge of the support plate 41 is the first direction, the nesting of the first protrusion 3111 and the first limiting sub-portion 4111 can prevent the base 31 from rocking along a second direction on the plane of the support plate 41. The second direction intersects the first direction, and the plane formed by the intersection of the second direction and the first direction is parallel to the plane of the support plate 41. The width of the first protrusion 3111 is less than or equal to the width of the first limiting sub-portion 4111. When the width of the first protrusion 3111 is equal to the width of the first limiting sub-portion 4111, the side surface of the first protrusion 3111 abuts against the first limiting sub-portion 4111.

[0035] As shown in Figure 5, the side edge of the support plate 41 includes a first sub-side edge a1 and a second sub-side edge a2, and the second sub-side edge a2 is recessed to form a first position-limiting sub-portion 4111. The first sub-side edge a1 and the second sub-side edge a2 are smoothly connected, that is, the portion where the first sub-side edge a1 and the second sub-side edge a2 connect is arc-shaped, so that the protrusion 311 can be smoothly nested in the first sub-position-limiting sub-portion 4111.

[0036] The limiting portion 411 also includes a second limiting sub-portion 4112, which is disposed on the support plate 41 and has a closed periphery, i.e., the second limiting sub-portion 4112 is hole-shaped. The support plate 41 can have multiple second limiting sub-portions 4112, and the number of second limiting sub-portions 4112 can be set according to actual needs. The orthographic projection pattern of the second limiting sub-portion 4112 can have different shapes, such as a closed circle or a closed polygon. The orthographic projection pattern of the second limiting sub-portion 4112 can be a regular pattern or an irregular pattern.

[0037] The protrusion 311 includes a second protrusion 3112, which nests with the second position-limiting sub-portion 4112 of the support plate 41. Because the second position-limiting sub-portion 4112 has a closed periphery, the nesting of the second protrusion 3112 and the second position-limiting sub-portion 4112 can restrict the base 31 from moving in any direction on the plane of the support plate 41. The diameter of the second protrusion 3112 is less than or equal to the diameter of the second position-limiting sub-portion 4112. When the diameter of the second protrusion 3112 is equal to the diameter of the second position-limiting sub-portion 4112, the side surface of the second protrusion 3112 abuts against the second position-limiting sub-portion 4112.

[0038] As shown in Figures 1 to 6, the limiting frame 40 also includes a first connecting plate 43 and a second connecting plate 44. The first connecting plate 43 is attached to the side wall of the housing 10, and the second connecting plate 44 is connected to the first connecting plate 43. The second connecting plate is connected to the support plate 41. The first connecting plate 43 is attached to the side wall of the housing 10 to achieve a fixed connection between the first connecting plate 43 and the side wall of the housing 10. The second connecting plate 44 is connected to the first connecting plate 43 and the support plate 41 respectively. The second connecting plate 44 provides support for the support plate 41 and also facilitates adjustment of the angle of the plane on which the support plate 41 is located relative to the plane on which the top wall of the housing 10 is located.

[0039] As shown in Figures 6 and 7, the angle between the second connecting plate 44 and the plane on which the support plate 41 is located can be a right angle, so that the plane on which the support plate 41 is located is parallel to the plane on which the top wall of the housing 10 is located. As a result, the base 31 of the high-voltage connector 30 is placed on the limit frame 40 and will not wobble on the plane on which the support plate 41 is located due to the influence of the weight of the conductive member 20 itself. The right angle in this embodiment refers to an angle in the specific range of 85° to 95°. Specifically, the right angle can be 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, or 95°.

[0040] The second connecting plate 44 and the first connecting plate 43 form a first angle, which is an obtuse angle. The specific range of the first angle is 100° to 165°. Specifically, the first angle can be 165°, 160°, 155°, 150°, 145°, 140°, 135°, 130°, 125°, 120°, 115°, 110°, 105°, or 100°. The obtuse first angle between the second connecting plate 44 and the first connecting plate 43 facilitates connection of the first connecting plate 43 to the side wall of the housing 10.

[0041] The limiting frame 40 further includes a reinforcing plate 42, which is connected to the support plate 41 and is further connected to the second connecting plate 44. The arrangement of the reinforcing plate 42 ensures that the connection between the second connecting plate 44 and the support plate 41 is not easily changed even under external force.

[0042] The support plate 41 includes a main support plate 4101 and a support extension plate 4102. The orthographic projection of the main support plate 4101 is within the orthographic projection of the base 31. Therefore, the main support plate 4101 is connected to the second connecting plate 44, ensuring the maximum effective connection area between the support plate 41 and the second connecting plate 44, which facilitates the stability of the connection between the second connecting plate 44 and the support plate 41. If the support plate 41 only includes the main support plate 4101, the main support plate 4101 will not contact or connect with the sidewalls of the housing 10, thereby affecting the stability of the support plate 41 in providing support and restraint for the base 31. Therefore, in this embodiment, the support plate 41 also includes a support extension plate 4102, which is connected to the main support plate 4101 and abuts against the sidewalls of the housing 10. The provision of the support extension plate 4102 enables the support plate 41 to abut against the sidewalls of the housing 10, further enhancing the stability of the support plate 41 in providing support and restraint for the base 31. The limiting portion 411 may be provided on the support main plate 4101 , the limiting portion 411 may also be provided on the support extension plate 4102 , or the limiting portion 411 may also be provided on both the support main plate 4101 and the support extension plate 4102 .

[0043] The support extension plate 4102 may be in a regular pattern or an irregular pattern. The support main body plate 4101 may be in a regular pattern or an irregular pattern.

[0044] As shown in Figures 1 to 6, the support plate 41 further includes an extension connecting plate 4103, which is connected to the support extension plate 4102 and attached to the side wall of the housing 10. Based on the configuration of the extension connecting plate 4103, the support plate 41 is connected to the housing 10 via the extension connecting plate 4103, thereby further enhancing the stability of the support plate 41 in providing support and positioning for the base 31, allowing the support plate 41 to support the base 31 while also being directly connected to the housing 10. The side edge of the support extension plate 4102 that abuts the side wall of the housing 10 is connected to the extension connecting plate 4103, thereby supporting the main plate 4101, the support extension plate 4102, and the extension connecting plate 4103 as an integrated whole. As shown in Figures 7 and 8, the support plate 41 includes a main support plate 4101 and a support extension plate 4102. The main support plate 4101 has a first side edge, a second side edge, a third side edge, and a fourth side edge. The first side edge of the main support plate 4101 is opposite to the second side edge, and the third side edge of the main support plate 4101 is opposite to the fourth side edge. The first, third, second, and fourth side edges of the main support plate 4101 are sequentially connected to form the side edge of the main support plate 4101. The first side edge of the main support plate 4101 is connected to the support extension plate 4102, the second side edge of the main support plate 4101 is connected to the reinforcing plate 42, the third side edge of the main support plate 4101 is connected to the second connecting plate 44, and the fourth side edge of the main support plate 4101 is recessed to form a first limiting sub-portion 4111.

[0045] The first side edge of the second connecting plate 44 is connected to the third side edge of the support body plate 4101, the second side edge of the second connecting plate 44 is connected to the reinforcing plate 42, and the third side edge of the second connecting plate 44 is connected to the first connecting plate 43. The first side edge of the second connecting plate 44 is opposite to the third side edge of the second connecting plate 44, and the second side edge of the second connecting plate 44 is respectively connected to the first side edge of the second connecting plate 44 and the third side edge of the second connecting plate 44. The second side edge of the second connecting plate 44 is flush with the third side edge of the support body plate 4101, so that the second connecting plate 44 and the support body plate 4101 are integrally formed.

[0046] The first side edge of the first connecting plate 43 is connected to the third side edge of the second connecting plate 44, and the second side edge of the first connecting plate 43 is adjacent to the first side edge of the first connecting plate 43. The second side edge of the first connecting plate 43 is flush with the second side edge of the second connecting plate 44, so that the first connecting plate 43 and the second connecting plate 44 are integrally formed.

[0047] In some embodiments, the support plate 41, the first connecting plate 43, the second connecting plate 44 and the reinforcing plate 42 of the limit frame 40 are integrally formed. For example, the limit frame 40 is stamped out using sheet metal processing technology, which can reduce the processing time required to prepare the limit frame 40 and save production costs.

[0048] In some embodiments, as shown in Figures 1, 2, and 9, in order to prevent a gap between the limit frame 40 and the base 31 of the high-voltage connection 30, a buffer layer 50 is provided in the power battery pack 100, and the buffer layer 50 is provided between the limit frame 40 and the base 31. The buffer layer 50 can reduce the impact of the base 31 on the limit frame 40 and prevent the limit frame 40 from vibrating. The buffer layer 50 can be made of buffer foam, or it can be made of materials such as rubber or sponge. The orthographic projection of the buffer layer 50 can only coincide with the orthographic projection of the support body plate 4101, ensuring that the buffer layer 50 is provided in the area where the orthographic projection of the base 31 coincides with the orthographic projection of the support plate 41, so as to reduce the impact of the base 31 on the limit frame 40. Among them, the orthographic projection of the buffer layer 50 can at least partially coincide with the orthographic projection of the support body plate 4101. Specifically, in some embodiments, the orthographic projection of the buffer layer 50 may only partially overlap with the orthographic projection of the support main plate 4101, or the orthographic projection of the buffer layer 50 may completely overlap with the orthographic projection of the support main plate 4101. The orthographic projection of the buffer layer 50 may also overlap with the orthographic projection of the support main plate 4101 and the support extension plate 4102, wherein the orthographic projection of the buffer layer 50 may also at least partially overlap with the orthographic projection of the support main plate 4101 and the support extension plate 4102. Specifically, in some embodiments, the orthographic projection of the buffer layer 50 may only partially overlap with the orthographic projection of the support main plate 4101 and the support extension plate 4102, or the orthographic projection of the buffer layer 50 may also completely overlap with the orthographic projection of the support main plate 4101 and the support extension plate 4102, ensuring that the area corresponding to the surface of the support base 31 in the support plate 41 is provided with a buffer layer to reduce the impact of the base 31 on the limit frame 40.

Claims

1. A battery pack (100), comprising a housing (10), a high-voltage connector (30) disposed in the housing (10), and a limiting frame (40); wherein: The high-voltage connector (30) comprises a base (31), wherein a first surface (3101) of the base (31) is opposite to a top wall of the housing (10); The limiting frame (40) is attached to the side wall of the shell (10), and the limiting frame (40) is at least connected to the second surface (3102) of the base (31) to limit the base (31), and the first surface (3101) of the base (31) is opposite to the second surface (3102) of the base (31).

2. The battery pack (100) according to claim 1, wherein: The limiting frame (40) comprises a support plate (41), on which a limiting portion (411) is provided, and the limiting portion (411) is nested with at least a portion of the base (31).

3. The battery pack (100) according to claim 2, wherein: The limiting portion (411) comprises a first limiting sub-portion (4111), and the side edge of the support plate (41) is recessed to form the first limiting sub-portion (4111).

4. The battery pack (100) according to claim 3, wherein: The side edge comprises a first sub-side edge (a1) and a second sub-side edge (a2), the first sub-side edge (a1) is smoothly connected to the second sub-side edge (a2), and the second sub-side edge (a2) is recessed to form the first limiting sub-portion (4111).

5. The battery pack (100) according to any one of claims 2 to 4, wherein the limiting portion (411) further comprises a hole-shaped second limiting sub-portion (4112).

6. The battery pack (100) according to any one of claims 2 to 4, wherein: The base (31) has a protrusion (311), and the protrusion (311) is nested with the limiting portion (411).

7. According to the battery pack (100) according to any one of claims 2 to 4, the limiting frame (40) further includes a first connecting plate (43) and a second connecting plate (44), the first connecting plate (43) is attached to the side wall of the shell (10), the second connecting plate (44) is connected to the first connecting plate (43), and the second connecting plate (44) is connected to the support plate (41).

8. The battery pack (100) according to claim 7, wherein the second connecting plate (44) and the first connecting plate (43) have a first angle, and the first angle is an obtuse angle.

9. The battery pack (100) according to claim 7, wherein the limiting frame (40) further comprises a reinforcing plate (42), wherein the reinforcing plate (42) is connected to the supporting plate (41), and the reinforcing plate (42) is connected to the second connecting plate (44).

10. The battery pack (100) according to claim 9, wherein: The support plate (41), the first connecting plate (43), the second connecting plate (44) and the reinforcing plate (42) are integrally formed.

11. The battery pack (100) according to claim 7, wherein: The support plate (41) comprises a support main plate (4101) and a support extension plate (4102), the support main plate (4101) is connected to the support extension plate (4102), and the support extension plate (4102) is in contact with the side wall of the shell (10), the support main plate (4101) is connected to the second connecting plate (44), and the limiting portion (411) is provided on at least one of the support main plate (4101) and the support extension plate (4102).

12. The battery pack (100) according to claim 11, wherein the support plate (41) further comprises an extension connecting plate (4103), wherein the extension connecting plate (4103) is connected to the support extension plate (4102), and the extension connecting plate (4103) is attached to a side wall of the shell (10).

13. The battery pack (100) according to any one of claims 1 to 4, the power battery pack (100) further comprising a buffer layer (50), wherein the buffer layer (50) is arranged between the limiting frame (40) and the base (31).

14. The battery pack (100) according to claim 1, comprising a conductive member (20) and a battery arranged in the shell (10), the high-voltage connector being connected to the conductive member (20) so that the high-voltage connector is suspended and supported in the shell (10), and the conductive member (20) is connected to the battery.

15. The battery pack (100) according to claim 14, wherein: The conductive member (20) comprises a total positive electrode conductive bar (21) and a total negative electrode conductive bar (22); the extension direction of the total positive electrode conductive bar (21) is the same as the extension direction of the total negative electrode conductive bar (22).

16. The battery pack (100) according to claim 15, wherein the conductive member (20) further comprises a sub-positive electrode conductive bar (23) and a sub-negative electrode conductive bar (24), wherein the sub-positive electrode conductive bar (23) and the sub-negative electrode conductive bar (24) extend in the same direction, and the extension direction of the total positive electrode conductive bar (21) intersects with the extension direction of the sub-positive electrode conductive bar (23).

17. The battery pack (100) according to claim 14, wherein the conductive member (20) is made of a metal material.

18. The battery pack (100) according to claim 7, wherein the angle between the second connecting plate (44) and the plane where the support plate (41) is located is 85°-95°, so that the plane where the support plate (41) is located is parallel to the plane where the top wall of the shell (10) is located.

19. According to the battery pack (100) according to claim 13, the limiting frame (40) comprises a support plate (41), the support plate (41) comprises a support main plate (4101) and a support extension plate (4102), the support main plate (4101) is connected to the support extension plate (4102), and the support extension plate (4102) is in contact with the side wall of the shell (10), the support main plate (4101) is connected to the second connecting plate (44), the limiting portion (411) is provided on at least one of the support main plate (4101) and the support extension plate (4102), and the orthographic projection of the buffer layer (50) coincides with the orthographic projection of the support main plate (4101).

20. The battery pack (100) according to claim 19, wherein an orthographic projection of the buffer layer (50) coincides with an orthographic projection of the supporting extension plate (4102).

Images