CN217387411U - Battery pack and vehicle - Google Patents

Abstract

The embodiment of the application provides a battery pack and a vehicle, the battery pack includes tray, a plurality of electric core and a plurality of braced frame, be provided with utmost point ear on the electric core, it is a plurality of the electric core set up side by side in the tray and pass through utmost point ear is connected braced frame sets up in at least part adjacent between the electric core, and right braced frame both sides utmost point ear on the electric core forms the support. The support frame of the battery pack can achieve stable support of the battery core. And the braced frame is right the braced frame both sides when utmost point ear on the electric core supports, can be convenient for the mutual welding of utmost point ear avoids utmost point ear takes place to warp when welding each other, has improved utmost point ear welded stability and convenience have guaranteed the safe handling of battery package.

Description

Battery pack and vehicle

Technical Field

The application belongs to the technical field of battery structures, and specifically relates to a battery package and a vehicle.

Background

With the increasing environmental awareness of people, more and more electric automobiles have entered the visual field of people. The battery pack is used as a main power assembly of the electric automobile and plays a key role in long-term stable operation of the electric automobile.

The battery pack generally comprises a plurality of battery cells, the battery cells are supported by a frame, but the battery cells are thin, and a traditional support is difficult to stably support the battery cells; and when the electric cores are welded through the lugs, the lugs are usually in a suspended state, so that the lugs are easy to deform during welding, and the stability and the efficiency of electric connection between the electric cores are reduced.

SUMMERY OF THE UTILITY MODEL

It is an object of embodiments of the present application to provide a new solution for a battery pack and a vehicle.

According to a first aspect of the present application, there is provided a battery pack including:

a tray;

the battery comprises a tray, a plurality of battery cells and a plurality of battery cells, wherein the battery cells are provided with tabs and are arranged in the tray side by side and connected through the tabs;

the support frames are arranged between at least part of the adjacent battery cells and support lugs on the battery cells on two sides of the support frames.

Optionally, at least two of the battery cells are sequentially attached to form a battery unit, the tabs include a first tab inside the battery unit and a second tab adjacent to the first tab between the battery units, and the support frame is configured to support the second tab.

Optionally, the support frame includes an insulating frame, the insulating frame includes a bottom support plate and a top support plate, the battery unit is disposed on the bottom support plate, and the second pole ear is disposed on the top support plate.

Optionally, the insulating frame includes a frame body sandwiched between adjacent battery cells, a first fixing wall, a second fixing wall, the bottom support plate and the top support plate are disposed around the frame body, the first fixing wall and the second fixing wall are disposed opposite to each other and extend along the direction from the bottom support plate to the top support plate, and the first fixing wall, the second fixing wall, the bottom support plate and the top support plate enclose a limiting space of the insulating frame;

at least part of the battery unit is arranged in the limit space.

Optionally, the first fixing wall of one insulating frame is sleeved with the second fixing wall of an adjacent insulating frame.

Optionally, a heat dissipation gap is reserved between the adjacent bottom support plates, and the heat dissipation gap is communicated with the battery core and the bottom of the tray.

Optionally, the frame body is a heat dissipation plate, a bent portion extends from the heat dissipation plate, and the bent portion is located between the bottom of the tray and the battery unit.

Optionally, the insulating frame and the heat dissipation plate are integrally formed.

Optionally, the tab adjacent to the battery cell in the battery unit is the first tab, and the adjacent first tab forms an electrical connection and is suspended on the adjacent battery cell.

Optionally, the battery further comprises an end plate, the plurality of battery cells sequentially form a battery cell string side by side, and the end plate is clamped between the end of the battery cell string and the side wall of the tray.

Optionally, the end plate includes an end plate main body and a deformation portion disposed on the end plate main body and close to the side wall of the tray, and the deformation portion is clamped between the end plate main body and the side wall of the tray in a deformed state.

According to a second aspect of the present application, there is provided a vehicle including the battery pack of the first aspect.

One technical effect of the embodiment of the application is as follows:

the embodiment of the application provides a battery pack, the battery pack includes tray, a plurality of electric core and a plurality of braced frame. The support frame of the battery pack can stably support the battery cell. Moreover, the supporting frame is right when the lugs are supported, the mutual welding of the lugs can be facilitated, the mutual welding of the lugs is avoided, the deformation is caused when the lugs are welded, the stability and convenience of the welding of the lugs are improved, and the safe use of the battery pack is guaranteed.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is an exploded view of a battery pack according to an embodiment of the present disclosure;

fig. 2 is an assembly diagram of a battery pack according to an embodiment of the present disclosure;

fig. 3 is an exploded view of another battery pack provided in an embodiment of the present application;

fig. 4 is an assembly view of another battery pack according to an embodiment of the present disclosure;

fig. 5 is a schematic perspective view illustrating a battery cell and a supporting frame of a battery pack according to an embodiment of the present disclosure;

fig. 6 is a schematic side view illustrating the cooperation of a cell and a support frame of a battery pack according to an embodiment of the present disclosure;

fig. 7 is a perspective view of a support frame of a battery pack according to an embodiment of the present disclosure;

fig. 8 is a bottom view of a support frame of a battery pack according to an embodiment of the present disclosure;

fig. 9 is a schematic view of an end plate of a battery pack according to an embodiment of the present application.

Wherein: 1. a tray; 2. an electric core; 21. a tab; 3. a support frame; 31. a bottom support plate; 32. a top support plate; 33. an insulating frame; 331. a first fixed wall; 332. a second fixed wall; 34. a heat dissipation plate; 35. a bending section; 4. connecting a support member; 5. connecting sheets; 6. an end plate; 61. an end plate main body; 62. a deformation part.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 9, an embodiment of the present application provides a battery pack that may be used as a power source for devices such as vehicles and aircrafts, including:

the battery pack comprises a tray 1, a plurality of battery cells 2 and a plurality of supporting frames 3, wherein tabs 21 are arranged on the battery cells 2, the battery cells 2 are arranged in the tray 1 side by side and are connected through the tabs 21, and the battery cells 2 can be connected in series through the tabs 21 so as to improve the output voltage of the battery pack; the plurality of battery cells 2 may be connected in parallel through the tabs 21, or the plurality of battery cells 2 may be connected in series and parallel through the tabs 21.

Referring to fig. 1 and 2, the support frame 3 is disposed between at least some of the adjacent battery cells 2, and supports tabs 21 on the battery cells 2 on both sides of the support frame 3.

Specifically, the part of the support frame 3 disposed between the adjacent electric cores 2 may be a heat sink, and the heat sink plays a role in dissipating heat between the adjacent electric cores 2; the support frame 3 may further include a portion disposed adjacent to the peripheral side of the battery cell 2, for example, the portion is disposed adjacent to the bottom of the battery cell 2, or surrounds the entire peripheral side of the battery cell 2, so as to achieve stable support for the battery cell 2.

Specifically, the large surfaces between the battery cells 2 may be sequentially attached, and the large surfaces of the battery cells 2 adjacent to the supporting frame 3 in the supporting frame 3 may be attached to the supporting frame 3, so that the battery cells 2 may form a stable support while the heat dissipation of the battery cells 2 is ensured.

In addition, the battery cell 2 may be a soft-package battery cell, and the tabs 21 extend from the cell main body of the battery cell 2, so as to facilitate the series connection between the tabs 21; alternatively, the battery cell 2 may also be a square-shell battery cell, so as to ensure the structural integrity and strength of the battery cell 2. The top of the tray 1 is open, and an upper cover can be arranged on the opening, so that the tray 1 can form comprehensive protection for the battery core 2.

The embodiment of the application provides the battery pack includes tray 1, a plurality of electric core 2 and a plurality of braced frame 3, be provided with utmost point ear 21 on the electric core 2, it is a plurality of electric core 2 set up side by side in the tray 1 and pass through utmost point ear 21 is connected, braced frame 3 sets up in at least part is adjacent between the electric core 2, and right braced frame 3 both sides utmost point ear 21 on the electric core 2 forms the support. And braced frame 3 can reach right electric core 2's stable support, so that braced frame 3 both sides utmost point ear 21's on the electric core 2 mutual welding avoids above-mentioned utmost point ear 21 to take place to warp when mutual welding, has improved utmost point ear 21 welded stability and convenience have guaranteed the safe handling of battery package.

Optionally, referring to fig. 1 and fig. 2, at least two battery cells 2 are sequentially attached to form a battery unit, the tabs 21 include a first tab inside the battery unit and a second tab between adjacent battery units, and the support frame 3 is configured to support the second tab.

Specifically, at least two electricity core 2 laminates in proper order and forms battery unit, also every the quantity of electricity core 2 in the battery unit can be two, three, four or more, and is a plurality of electricity core 2 passes through when utmost point ear 21 is connected, utmost point ear 21 can include inside first utmost point ear of battery unit and adjacent second utmost point ear between the battery unit, also promptly electricity core 2 in the battery unit realizes connecting through first utmost point ear, and is adjacent electricity core 2 in the battery unit is when connecting, can realize connecting through second utmost point ear for second utmost point ear is located adjacently between the battery unit.

More importantly, it is adjacent battery unit inside electric core 2 is passing through when the second utmost point ear is realized connecting, braced frame 3 can be right the second utmost point ear supports, makes the second utmost point ear be fixed in braced frame 3 is last, so that the mutual welding of second utmost point ear avoids the second utmost point ear takes place to warp when welding each other, has improved second utmost point ear welded stability and convenience. And under the condition that the second electrode lug is supported by the supporting frame 3, the structure of the second electrode lug is more stable during welding, and the stability and the connection efficiency of electric connection between the electric cores 2 are improved.

Alternatively, referring to fig. 1 to 6, the supporting frame 3 includes an insulating frame 33 and is disposed on the insulating frame 33; the support frame 3 includes a bottom support plate 31 and a top support plate 32, the battery cell is disposed on the bottom support plate 31, and the second tab is disposed on the top support plate 32.

Specifically, when the plurality of battery cells 2 are arranged in the tray 1 side by side and connected in series through the tabs 21, in order to ensure the stability of electric energy transmission in the battery cells 2, a relatively stable position needs to be provided for the battery cells 2 and the tabs 21. When the battery unit is disposed on the bottom support plate 31, the bottom support plate 31 may support and position the battery cell 2 close to the support frame 3, and when the second tab is disposed on the top support plate 32, the second tab to be welded may be bent and then attached to the top support plate 32, and the top support plate 32 may provide positioning for the second tab, so as to ensure the stability of welding the second tab.

Optionally, referring to fig. 7 and 8, the insulating frame 33 includes a frame body sandwiched between adjacent battery units, a first fixing wall 331, a second fixing wall 332, the bottom support plate 31 and the top support plate 32 are disposed around the frame body, the first fixing wall 331 and the second fixing wall 332 are disposed opposite to each other and extend along the direction from the bottom support plate 31 to the top support plate 32, and the first fixing wall 331, the second fixing wall 332, the bottom support plate 31 and the top support plate 32 enclose a limiting space of the insulating frame 33;

at least part of the battery unit is arranged in the limit space.

Specifically, when at least two of the battery cells 2 are sequentially attached to form a battery unit, because a plurality of the battery cells 2 are arranged in the tray 1 side by side, that is, a plurality of battery units are arranged side by side, a frame body is interposed between adjacent battery units, the frame body may be an insulating plate or a heat dissipation plate, and when the first fixing wall 331 and the second fixing wall 332 are arranged opposite to each other and both extend along the bottom support plate 31 in the direction of the top support plate 32, specifically, the first fixing wall 331 and the second fixing wall 332 may extend along the bottom support plate 31 in the direction of the top support plate 32 in the length direction thereof, and the first fixing wall 331 may extend toward one of the adjacent battery units in the width direction thereof, and the second fixing wall 332 may extend toward the other of the adjacent battery units in the width direction thereof, make first fixed wall 331, second fixed wall 332, bottom support plate 31 and the spacing space that top support plate 32 encloses include first spacing space and the spacing space of second, first spacing space and the spacing space of second are located respectively the both sides of frame body, and are adjacent the battery unit can form through first spacing space and the spacing space of second respectively and support, for example adjacent the week side of one of the battery unit supports through first spacing space, and adjacent week side of one of the battery unit supports through the spacing space of second, has formed first spacing space with the spacing structure that the spacing space of second set gradually at an interval.

Optionally, the first fixing wall 331 of one insulating frame 33 is sleeved with the second fixing wall 332 of the adjacent insulating frame 33.

Specifically, in order to improve the guiding performance between the insulating frames 33, the outer circumferential dimension of the first fixing wall 331 of one insulating frame 33 may be set to be smaller, and the inner circumferential dimension of the second fixing wall 332 of the insulating frame 33 adjacent to the insulating frame 33 may be set to be larger, so that the first fixing wall 331 of one insulating frame 33 and the second fixing wall 332 of the adjacent insulating frame 33 may form a sleeved connection structure, and a connection guide may be provided between a plurality of insulating frames 33 by the sleeved connection structure, so as to simplify the assembling process between a plurality of insulating frames 33, and facilitate the automatic assembly of the insulating frames 33.

Optionally, a heat dissipation gap is reserved between the adjacent bottom support plates 31, and the heat dissipation gap communicates between the battery cell 2 and the bottom of the tray 1.

Specifically, in consideration of the light weight of the bottom support plates 31 and the heat dissipation requirement of the battery cells 2, a heat dissipation gap may be left between adjacent bottom support plates 31, so as to facilitate the heat of the battery cells 2 to be transferred to the tray 1, increase the heat transfer rate between the battery cells 2 and the tray 1, and improve the heat dissipation capability of the battery cells 2 in the battery unit.

Optionally, referring to fig. 7, the frame body is a heat dissipation plate 34, a bent portion 35 extends from the heat dissipation plate 34, and the bent portion 35 is located between the bottom of the tray 1 and the battery unit.

Specifically, when at least part of the battery unit is disposed in the insulating frame 33, the insulating frame 33 may be surrounded on the entire circumference of the adjacent battery unit, so as to stably support the battery unit; when the heat dissipation plate 34 is interposed between the adjacent battery cells, the adjacent battery cells may be respectively attached to both side surfaces of the heat dissipation plate 34, and the heat dissipation plate 34 may perform a heat dissipation function on the adjacent battery cells.

For example, when the bottom support plate 31 provides support for the battery cells 2 close to the support frame 3 in the battery unit, the bottom support plate 31 may be laid on the entire bottom of the battery cells 2 in the battery unit to increase the protection area for the battery cells 2; in consideration of the light weight of the bottom support plate 31 and the heat dissipation requirement of the battery cells 2, a hole may be formed in the middle of the bottom support plate 31 to facilitate the heat transfer of the battery cells 2 to the tray 1. The bent portion 35 may directly contact the bottoms of the battery cell 2 and the tray 1, for example, the bottoms of the battery cell 2 and the tray 1 are respectively attached to two side surfaces of the bent portion 35, so as to increase the heat transfer rate between the battery cell 2 and the tray 1, and improve the heat dissipation capability of the battery cell 2 in the battery unit. In addition, the bending portion 35 may be located at the bottom of the battery cell 2 on one side of the supporting frame 3 and the tray 1, or at the bottom of the battery cell 2 on two sides of the supporting frame 3 and the tray 1, so as to further improve the heat dissipation efficiency between the battery cell 2 and the tray 1.

In one embodiment, in order to extend the flat bent portion 35 on the heat dissipation plate 34 when the support frame 3 is formed, the bent portion 35 extending from the heat dissipation plate 34 may be attached to the bottom surface of the bottom support plate 31, so as to form a stacked structure of the bent portion 35 and the bottom support plate 31.

Alternatively, referring to fig. 7, the insulating frame 33 and the heat dissipation plate 34 are integrally formed.

Specifically, considering insulating frame 33's lightweight and support stability, can with insulating frame 33 sets up to the plastic frame, and in order to guarantee heating panel 34's heat transfer efficiency, can with heating panel 34 sets up to metal heating panel such as copper, aluminum plate or steel sheet, the plastic frame can with metal heating panel an organic whole is moulded plastics in the plastic frame, complete with shaping department in the structure of supporting frame 3, can be on the basis of guaranteeing supporting frame 3's support and thermal conductivity, simplify supporting frame 3's forming process.

Optionally, referring to fig. 3 and 4, the tab 21 adjacent to the battery cell 2 in the battery unit is the first tab, and the adjacent first tab forms an electrical connection and is suspended on the adjacent battery cell 2.

Specifically, adjacent when the first utmost point ear of electricity core 2 carries out the electricity and connects, can be with adjacent weld after the mutual overlap joint of first utmost point ear for unsettled setting adjacent the lower part of first utmost point ear can be left the space, and devices such as this space can be used for holding sampling pencil, miniature fire extinguisher, in order to improve the inside space utilization of battery package. In a specific embodiment, adjacent first utmost point ear can make the welding frock right at laser welding first utmost point ear produces the holding down force, has increased the welded degree of difficulty on the one hand, and on the other hand has reduced adjacently welded intensity between the first utmost point ear. The support component can be a part of the battery pack, for example, the support component is always kept in the battery pack; it is also possible that the support assembly is only a temporary connecting support 4, and the connecting support 4 can be used as a welding auxiliary clamp for providing effective support for the first tab when welding adjacent to the first tab, for example, the connecting support 4 in fig. 3 is inserted under the adjacent first tab from the side to provide support for welding adjacent to the first tab; after welding, the connecting support member 4 can be taken out from the lower surface of the adjacent first tab, so that the connecting support member 4 can be recycled.

Alternatively, referring to fig. 1 and 3, a plurality of the battery cells 2 are arranged side by side in sequence to form a battery cell string, and the end of the battery cell string is electrically connected with a connecting piece 5.

Specifically, the battery cell string may include a plurality of battery cells 2 connected in series this time along the same direction, and since at least two battery cells 2 are sequentially attached to form a battery unit, the battery cell string may include one or more battery units. A plurality of electric cores 2 are connected in series in sequence to form a high-voltage electric core string, and in order to ensure the stability of high-voltage electric connection between the electric core strings, the electric core strings can be connected in series or in parallel through the connecting sheet 5. In addition, the connecting pieces 5 at the first section and the tail end after the plurality of battery cell strings are connected can be used as a total positive electrode and a total positive electrode of the battery pack, so that the battery pack can be externally output conveniently.

Optionally, referring to fig. 1 and 9, a plurality of the battery cells 2 are sequentially arranged side by side to form a battery cell string, and the battery pack further includes an end plate 6, where the end plate 6 is sandwiched between an end of the battery cell string and a side wall of the tray 1.

Specifically, a plurality of the electric core cluster that electric core 2 formed side by side set up in when in tray 1, in order to guarantee electric core 2's compactness and connection stability, and tray 1 inner space's utilization ratio, can be with a plurality of electric core 2's big face is laminated in proper order. However, since the battery cells 2 have different sizes, a gap is left between the end of the battery cell string and the side wall of the tray 1, which may hinder the stable arrangement of the battery cell string. When the end plate 6 is clamped between the end portion of the battery cell string and the side wall of the tray 1, the thickness of the end plate 6 can be set according to the gap between the end portion of the battery cell string and the side wall of the tray 1, and when the end plate 6 is abutted between the end portion of the battery cell string and the side wall of the tray 1, the battery cell string can be given an extruded restraining force, so that the expansion force of the battery cell string is effectively resisted, the stress balance of the plurality of battery cells 2 in the tray 1 is maintained, and the structure reliability of the battery pack is ensured.

Optionally, referring to fig. 9, the end plate 6 includes an end plate main body 61 and a deformation portion 62 disposed on the end plate main body 61 and close to the side wall of the tray 1, and the deformation portion 62 is clamped between the end plate main body 61 and the side wall of the tray 1 in a deformed state.

Specifically, when the end plate 6 abuts against the end of the cell string and the side wall of the tray 1, in order to make the stress of each cell 2 consistent and ensure the performance of the cell 2, a stable extrusion force can be transmitted to each cell 2 through the end plate 6. For example, before the end plate 6 is placed in the tray 1, the deformation portion 62 may be pressed to deform and thin, the end plate 6 is placed between the end plate main body 61 and the side wall of the tray 1 in a state where the deformation portion 62 is deformed, and finally the end plate is clamped between the end plate main body 61 and the side wall of the tray 1 by the deformation restoring force of the deformation portion 62, so that a stable pressing effect may be applied to each of the battery cells 2, and the performance stability of the battery cells 2 is ensured; and the end plate 6 has simple forming process and low manufacturing cost.

In a specific embodiment, as shown in fig. 9, four deformation portions 62 are disposed on one side of the end plate main body 61 close to the side wall of the tray 1, a clamping gap is left between adjacent deformation portions 62, a clamp can be firstly clamped in the clamping gap to enable the deformation portions 62 to be obliquely deformed, and the deformation portions 62 can abut between the end plate main body 61 and the side wall of the tray 1 in a deformed state to ensure the stability of the battery cells 2.

The embodiment of the application also provides a vehicle, and the vehicle comprises the battery pack.

Specifically, including tray 1, a plurality of electric core 2 and a plurality of braced frame 3 in the battery package of vehicle, be provided with utmost point ear 21 on the electric core 2, it is a plurality of electric core 2 set up side by side in the tray 1 and through utmost point ear 21 series connection, at least two electric core 2 laminates in proper order and forms the battery unit, utmost point ear 21 can include inside first utmost point ear of battery unit and adjacent second utmost point ear between the battery unit, braced frame 3's at least part set up in adjacent between the battery unit, and the second utmost point ear is fixed in braced frame 3 is last. And the support frame 3 can achieve stable support of the battery cell. And support frame 3 can be right the second utmost point ear supports, makes the second utmost point ear be fixed in support frame 3 is last, so that the mutual welding of second utmost point ear avoids taking place to warp when the mutual welding of second utmost point ear, has improved second utmost point ear welded stability and convenience have guaranteed the safety in utilization of vehicle.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims (12)

1. A battery pack, comprising:

a tray (1);

the battery cell comprises a plurality of battery cells (2), wherein tabs (21) are arranged on the battery cells (2), and the battery cells (2) are arranged in the tray (1) side by side and are connected through the tabs (21);

the battery cell structure comprises a plurality of support frames (3), wherein the support frames (3) are arranged between at least part of adjacent battery cells (2), and support tabs (21) on the battery cells (2) on two sides of the support frames (3).

2. The battery pack according to claim 1, wherein at least two of the battery cells (2) are sequentially bonded to form a battery unit, the tabs (21) comprise a first tab inside the battery unit and a second tab between adjacent battery units, and the support frame (3) is configured to support the second tab.

3. Battery pack according to claim 2, characterized in that the support frame (3) comprises an insulating frame (33);

the insulating frame (33) comprises a bottom support plate (31) and a top support plate (32), the battery unit is arranged on the bottom support plate (31), and the second pole lug is arranged on the top support plate (32).

4. The battery pack according to claim 3, wherein the insulating frame (33) comprises a frame body sandwiched between the adjacent battery units, a first fixing wall (331), a second fixing wall (332), the bottom support plate (31) and the top support plate (32) are arranged around the frame body, the first fixing wall (331) and the second fixing wall (332) are arranged oppositely and extend along the bottom support plate (31) towards the top support plate (32), and the first fixing wall (331), the second fixing wall (332), the bottom support plate (31) and the top support plate (32) enclose a limiting space of the insulating frame (33);

at least part of the battery unit is arranged in the limit space.

5. Battery pack according to claim 4, characterized in that the first fixing wall (331) of one insulating frame (33) is nested with the second fixing wall (332) of the adjacent insulating frame (33).

6. The battery pack according to claim 3, wherein a heat dissipation gap is reserved between the adjacent bottom support plates (31), and the heat dissipation gap is communicated with the battery cells (2) and the bottom of the tray (1).

7. The battery pack according to claim 4, wherein the frame body is a heat dissipation plate (34), a bent portion (35) extends from the heat dissipation plate (34), and the bent portion (35) is located between the bottom of the tray (1) and the battery unit.

8. The battery pack according to claim 7, wherein the insulating frame (33) and the heat dissipation plate (34) are integrally formed.

9. The battery pack according to claim 2, wherein the tab (21) of the battery cell (2) adjacent thereto is the first tab, and the tab is electrically connected to the first tab and suspended from the adjacent battery cell (2).

10. The battery pack according to claim 1, further comprising an end plate (6), wherein the plurality of battery cells (2) are sequentially arranged side by side to form a battery cell string, and the end plate (6) is sandwiched between an end of the battery cell string and a side wall of the tray (1).

11. The battery pack according to claim 10, wherein the end plate (6) includes an end plate main body (61) and a deformation portion (62) provided to the end plate main body (61) near the side wall of the tray (1), and the deformation portion (62) is interposed between the end plate main body (61) and the side wall of the tray (1) in a deformed state.

12. A vehicle comprising the battery pack according to any one of claims 1 to 11.

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