Battery pack and vehicle

Abstract

The utility model relates to a battery pack and a vehicle, the battery pack comprises a battery pack shell, a battery module, a supporting structure and filling glue, a battery cavity is formed in the battery pack shell, the battery module is arranged in the battery cavity, and a first space is formed between the battery module and an upper cover of the battery pack shell at an interval; wherein the supporting structure is arranged in the first space, one side of the supporting structure is supported on the inner wall of the upper cover, and the other side of the supporting structure is supported on the battery module; the filling glue is filled in the first space. The supporting structure is arranged in the first space, and the two sides of the supporting structure can respectively support the inner wall of the upper cover and the battery module, so that the supporting structure can ensure that a gap is kept between the battery module and the upper cover of the battery pack shell, and mutual contact between the battery module and the upper cover of the battery pack shell is avoided; the filling glue can be effectively filled, the bonding area is increased, and the bonding effect is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery packs, and in particular, to a battery pack and a vehicle. Background Art

[0002] Battery packs are often used in new energy vehicles. A new energy battery pack includes a battery pack housing and a battery module. As a carrier for the battery module, the battery pack housing plays a key role in the safe operation and protection of the battery module.

[0003] In the related art, when filling glue into the gap between the battery module and the upper cover of the battery pack housing, the battery module and the upper cover often come into contact with each other, making it impossible to effectively ensure the gap between the two, thereby reducing the bonding area and the bonding effect. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, the present disclosure provides a battery pack and a vehicle to solve the technical problems existing in the related art.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a battery pack, including: a battery pack housing, a battery module, a support structure, and a filling glue. A battery cavity is formed inside the battery pack housing. The battery module is disposed in the battery cavity, and a first space is provided at an interval between the battery module and the upper cover of the battery pack housing.

[0006] Wherein, the support structure is disposed in the first space, and one side of the support structure supports against the inner wall of the upper cover, and the other side supports against the battery module; the filling glue is filled in the first space.

[0007] In some embodiments, the battery module includes a plurality of battery cells, and the plurality of battery cells are arranged in sequence along a first direction.

[0008] The support structure includes at least one support bar, the support bar extends along the first direction, and is connected to at least two sides of the battery cells close to the upper cover.

[0009] Wherein, the first direction is the thickness direction of the battery cell.

[0010] In some embodiments, the support bar is connected to the middle of the battery cell along a second direction; the first direction intersects with the second direction.

[0011] In some embodiments, the explosion-proof valve of the battery cell is disposed on a side of the battery cell away from the upper cover.

[0012] In some embodiments, the battery cell includes a battery cell body and an insulating layer, and the insulating layer is at least partially disposed on a side of the battery cell body close to the upper cover;

[0013] The insulating layer is provided with a notch, and the support bar is connected to the battery cell body through the notch.

[0014] In some embodiments, the support bar is bonded to the battery cell body exposed from the notch through a second adhesive.

[0015] In some embodiments, the plurality of battery cells include a plurality of first battery cell groups, the plurality of first battery cell groups are arranged along a second direction, and the first battery cell group includes a plurality of first battery cells arranged in sequence along the first direction;

[0016] Each of the first battery cell groups is connected to at least one first support bar, and the first support bar is connected to the middle of the corresponding first battery cell group along the second direction; the first direction intersects with the second direction.

[0017] In some embodiments, a first gap is spaced between two adjacent first battery cell groups in the second direction, and at least one second support bar is connected between two adjacent first battery cell groups;

[0018] The second support bar includes a first support body, and a first support block and a second support block protruding from both sides of the support body along a third direction; the first support block supports on the inner wall of the upper cover, the second support block is disposed in the first gap, and the first support body connects two adjacent first battery cell groups;

[0019] Wherein, the first direction, the second direction and the third direction intersect with each other in pairs.

[0020] In some embodiments, the battery module includes two first outer walls disposed opposite to each other along the first direction, and the battery pack housing includes two first inner walls disposed opposite to each other along the first direction;

[0021] The first inner wall and the corresponding first outer wall are spaced apart from each other in the first direction to form a second space, and the filling adhesive is filled in the second space;

[0022] The end of the first support bar and / or the second support bar along the first direction is flush with the first outer wall; or, the end of the first support bar and / or the second support bar along the first direction abuts against the first inner wall.

[0023] In some embodiments, the support bar includes a support body and a support block that both extend along a first direction;

[0024] The support block is protrudingly provided on the support body along a third direction, and the dimension of the support body in a second direction is greater than the dimension of the support block in the second direction;

[0025] One side of the support body away from the support block in the third direction is connected to the battery cell, and one side of the support block away from the support body in the third direction supports on the inner wall of the upper cover;

[0026] Wherein, the first direction, the second direction, and the third direction are pairwise intersecting.

[0027] In some embodiments, the dimension of the support block in the second direction is between 1 mm and 3 mm, and the dimension of the support block in the third direction is between 0.5 mm and 5 mm;

[0028] The dimension of the support body in the second direction is between 5 mm and 30 mm, and the dimension of the support body in the third direction is between 1 mm and 5 mm.

[0029] In some embodiments, the support structure is made of an insulating material, the insulating material includes a plastic material, and the support structure is integrally extruded and formed from the plastic material.

[0030] According to the first aspect of the embodiments of the present disclosure, a vehicle is further provided, and the vehicle includes the battery pack described above.

[0031] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: A first space for filling glue is provided at an interval between the battery module and the upper cover of the battery pack housing. By providing a support structure in this first space, and both sides of the support structure can respectively support on the inner wall of the upper cover and the battery module, then the support structure can ensure that there is a gap between the battery module and the upper cover of the battery pack housing, avoid contact between the battery module and the upper cover of the battery pack housing, ensure that the filling glue can be effectively filled, increase the bonding area, and improve the bonding effect.

[0032] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0034] Figure 1Explosion structure schematic diagram of a battery pack shown in an embodiment of the present disclosure.

[0035] Figure 2 is Figure 1 Partial schematic diagram at position D in

[0036] Figure 3 Cross-sectional view of a battery pack shown in an embodiment of the present disclosure.

[0037] Figure 4 is Figure 3 Partial enlarged view at position E in

[0038] Figure 5 Structure schematic diagram of a support bar of a battery pack shown in an embodiment of the present disclosure.

[0039] Figure 6 Cross-sectional view of a support bar of a battery pack shown in the first embodiment of the present disclosure.

[0040] Figure 7 and Figure 8 Schematic diagram of the cooperation between the support bar and the battery cell in the first embodiment of the present disclosure.

[0041] Figure 9 Cross-sectional view of a support bar of a battery pack shown in the second embodiment of the present disclosure.

[0042] Figure 10 Schematic diagram of the cooperation between the support bar and the battery cell in the second embodiment of the present disclosure.

[0043] Explanation of reference numerals

[0044] 1. Battery pack housing; 10. Battery cavity; 11. Upper cover; 110. First space; 12. Housing body; 101. First inner side wall;

[0045] 2. Battery module; 21. Battery cell; 210. First gap; 211. First battery cell group; 2111. First battery cell; 201. First outer side wall; 2100. Notch; 2101. Battery cell body; 2102. Insulation layer; 22. Battery cell assembly; 23. Module side plate; 200. Explosion-proof valve; 2001. Positive electrode post; 2002. Negative electrode post;

[0046] 3. Support structure; 31. Support bar; 311. First support bar; 312. Second support bar; 3121. First support body; 3122. First support block; 3123. Second support block; 3101. Support body; 3102. Support block;

[0047] 4. Filling glue; 5. Second adhesive; 6. Liquid cooling plate; 100. Battery pack;

[0048] A, the first direction; B, the second direction; C, the third direction. Detailed implementation manners

[0049] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0050] In the present disclosure, unless otherwise stated, the orientation terms such as "upper" and "lower" refer to relative concepts in the thickness direction of the battery pack of the present disclosure. The upper side refers to one side of the upper cover of the battery pack, and the lower side refers to one side of the bottom of the housing body of the battery pack. Actually, when installed, either the "upper side" of the battery pack is in the same direction as the upper side of the vehicle in the normal use state, and the "lower side" of the battery pack is in the same direction as the lower side of the vehicle in the normal use state; or the "upper side" of the battery pack is in the opposite direction to the upper side of the vehicle in the normal use state, and the "lower side" of the battery pack is in the opposite direction to the lower side of the vehicle in the normal use state.

[0051] In other words, when the battery pack is installed on the vehicle, it can be installed in the normal orientation, in the reverse orientation, or it can also be installed laterally. The present disclosure does not limit this here. The orientation terms such as "the first direction, the second direction, the third direction" can specifically refer to Figure 1 as shown; the orientation terms such as "inner" and "outer" refer to the inside and outside of the specific structural contour, and the terms such as "first" and "second" are only used to distinguish one element from another element, and do not have sequentiality and importance.

[0052] Referring to Figures 1 to 10 as shown, the present disclosure provides a battery pack 100, including a battery pack housing 1, a battery module 2, a support structure 3, and a filling adhesive 4. A battery chamber 10 is formed inside the battery pack housing 1. The battery module 2 is disposed in the battery chamber 10, and a first space 110 is provided with a gap between the battery module 2 and the upper cover 11 of the battery pack housing 1. Among them, the support structure 3 is disposed in the first space 110, one side of the support structure 3 is supported on the inner wall of the upper cover 11, and the other side is supported on the battery module 2. The filling adhesive 4 is filled in the first space 110.

[0053] In the above technical solution, a first space 110 for filling the filling glue 4 is provided at an interval between the battery module 2 and the upper cover of the battery pack housing 1. By providing a support structure 3 in the first space 110, and both sides of the support structure 3 can respectively support on the inner wall of the upper cover 11 and the battery module 2, the support structure 3 can ensure that there is a gap between the battery module 2 and the upper cover 11 of the battery pack housing 1, avoid contact between the battery module 2 and the upper cover 11 of the battery pack housing 1, ensure that the filling glue 4 can be effectively filled, increase the bonding area, and improve the bonding effect.

[0054] In one embodiment, referring to Figure 1 and Figure 2 as shown, the battery module 2 includes a plurality of battery cells 21, the support structure 3 includes at least one support bar 31, one side of the support bar 31 supports on the inner wall of the upper cover 11, and the other side supports on at least part of the battery cells 21.

[0055] In this embodiment, the plurality of battery cells 21 can be arranged in any arrangement manner, and the battery cells 21 can also be configured in any suitable shape, which is not limited in the present disclosure. In addition, the support bar 31 can be one or multiple. The support bar 31 can support on part of the plurality of battery cells 21 or all of the plurality of battery cells 21, as long as it can support between the upper cover 11 and the battery module 2, and the present disclosure does not limit this either.

[0056] For example, referring to Figure 2 as shown, the above-mentioned battery cell 21 can be configured as a prismatic shape, and the plurality of prismatic battery cells 21 are arranged along their thickness direction, but the present disclosure does not limit the specific shape of the battery cell 21. Or, in other embodiments, the above-mentioned battery cell 21 can also be configured as a cylindrical shape (not shown), the axial direction of the cylindrical battery cell 21 can be the same as the thickness direction of the battery pack 100, and the plurality of cylindrical battery cells 21 are arranged radially.

[0057] For the support structure 3, it can also be configured as a plurality of support structure blocks (not shown), and the plurality of support structure blocks are spaced apart and distributed in the first space 110, and can also support the upper cover 11 and the battery module 2, and the present disclosure does not limit the specific shape of the support structure 3.

[0058] Optionally, referring to Figures 1 to 3 as shown, the plurality of battery cells 21 are arranged in sequence along the first direction A; the support structure 3 includes at least one support bar 31, the support bar 31 extends along the first direction A and is connected to at least two battery cells 21 on the side close to the upper cover 11; wherein, the first direction A is the thickness direction of the battery cell 21.

[0059] In this embodiment, a plurality of battery cells 21 are arranged along the first direction A (i.e., the thickness direction of the battery cell 21). When the battery cell 21 expands, the plurality of battery cells 21 will expand in the first direction A. By extending and arranging the support bar 31 in the first direction A, and the support bar 31 is connected to at least part of the battery cells 21, the expansion force of the battery cell 21 can be effectively restricted in the first direction A, and the deformation of the battery cell 21 caused by the expansion force can be reduced.

[0060] Optionally, referring to Figure 1 As shown, the explosion-proof valve 200 of the battery cell 21 is arranged on the side of the battery cell 21 away from the upper cover 11. By arranging the explosion-proof valve 200 of the battery cell 21 on the side of the battery cell 21 away from the upper cover 11, that is, the explosion-proof valve 200 and the support bar 31 are respectively located on the opposite sides of the battery cell 21, sufficient space is provided for the arrangement and installation of the support bar 31, and the explosion-proof valve 200 is prevented from causing structural interference to the support bar 31.

[0061] In addition, the form of combining the support bar 31 and the filling adhesive 4 can achieve a similar effect to the casting repair of reinforced concrete, improving the stiffness of the battery module 2 while also improving the stiffness of the entire battery pack 100.

[0062] Optionally, referring to Figure 2 As shown, the support bar 31 is connected to the middle of the battery cell 21 along the second direction B; the first direction A intersects with the second direction B.

[0063] When the battery cell 21 expands, the expansion force at the middle of the battery cell 21 in the second direction B is the largest. By connecting the support bar 31 to the middle of the battery cell 21 along the second direction B, the expansion of the battery cell 21 in the middle in the second direction B can be effectively restricted, and the deformation of the battery cell 21 can be reduced.

[0064] For example, a positive electrode post 2001 and a negative electrode post 2002 are arranged on the side of the battery cell 21 close to the upper cover 11. The positive electrode post 2001 and the negative electrode post 2002 are arranged at intervals in the second direction B. The support bar 31 is arranged between the positive electrode post 2001 and the negative electrode post 2002, and the distances between the support bar 31 and the positive electrode post 2001 and the negative electrode post 2002 in the second direction B are the same, ensuring that the support bar 31 is located at the middle of the battery cell 21 in the second direction B.

[0065] Optionally, referring to Figure 2As shown, the battery cell 21 may include a battery cell body 2101 and an insulating layer 2102. The insulating layer 2102 is connected to the battery cell body 2101 and is at least partially disposed on a side of the battery cell body 2101 close to the upper cover 11, and the insulating layer 2102 is provided with a notch 2100. One side of the support bar 31 is supported on the inner wall of the upper cover 11, and the other side of the support bar 31 is connected to the battery cell body 2101 through the notch 2100.

[0066] In this embodiment, by providing the notch 2100 in the insulating layer 2102 and connecting the support bar 31 to the battery cell body 2101 through this notch 2100, on the one hand, the strength of the connection between the support bar 31 and the battery cell 21 can be effectively improved; on the other hand, by pressing the support bar 31 against the pole column side of the battery cell 21 and connecting it to the battery cell body 2101, the bearing capacity after thermal runaway of the battery cell top cover can be effectively improved, and the risk of the battery cell 21 exploding the top cover after thermal runaway can be reduced; in addition, as can be seen from the above, the above explosion-proof valve 200 can be disposed on a side of the battery cell 21 away from the upper cover 11. By disposing the insulating layer 2102 on a side of the battery cell body 2101 close to the upper cover 11 and providing the notch 2100 in the insulating layer 2102, there is no need to make space for the explosion-proof valve 200, and the opening area of the notch 2100 is ensured, thereby improving the strength of the connection between the support bar 31 and the battery cell body 2101.

[0067] Referring to Figure 4 As shown, the support bar 31 is bonded to the battery cell body 2101 exposed from the notch 2100 through the second adhesive 5. The present disclosure does not limit the specific connection manner between the support bar 31 and the upper cover 11 and the battery cell 21.

[0068] In addition, the above support bar 31 may be bonded to the inner wall of the upper cover 11 through a first adhesive (not shown), or the support bar 31 and the inner wall of the upper cover 11 may also be in contact with each other. The present disclosure does not limit this.

[0069] Referring to Figures 1 to 3 As shown, a plurality of battery cells 21 include a plurality of first battery cell groups 211. The first battery cell groups 211 may be provided in plurality, and the plurality of first battery cell groups 211 are arranged along the second direction B. The support bars 31 may be provided in plurality, and at least one support bar 31 is correspondingly connected to each first battery cell group 211, and each support bar 31 is connected to at least a part of the first battery cells 2111 in the corresponding first battery cell group 2111; wherein, the first direction A intersects with the second direction B.

[0070] In this embodiment, by correspondingly connecting at least one support bar 31 to each first battery cell group 211, the support between each first battery cell group 211 and the upper cover 11 can be realized, and the support of the support bar 31 at multiple positions and in multiple regions can be achieved, effectively improving the support stability and strength between the upper cover 11 and the battery module 2. Among them, each first battery cell group 211 may be connected to one support bar 31 or multiple support bars 31, and the present disclosure does not limit this.

[0071] In addition, each support bar 31 is connected to at least some of the first battery cells 2111 in the corresponding first battery cell group 2111, which may be some of the first battery cells 2111 in the first battery cell group 2111 or all of the first battery cells 2111 in the first battery cell group 2111, and the present disclosure does not limit this.

[0072] In one embodiment, referring to Figure 1 , Figure 2 , Figure 4 and Figure 7 as shown, the multiple support bars 31 include multiple first support bars 311, and the multiple first support bars 311 are arranged in one-to-one correspondence with the multiple first battery cell groups 211. The first support bar 311 is connected to the middle of the corresponding first battery cell group 211 along the second direction B.

[0073] In this embodiment, on the one hand, the first support bar 311 can support the space between the corresponding first battery cell group 211 and the upper cover 11 to ensure a safety gap; on the other hand, the first support bar 311 can also improve the overall stiffness of the corresponding first battery cell group 211; in addition, the first support bar 311 can also limit the expansion force of the first battery cells 2111 in the first battery cell group 211. In addition, when the first battery cells 2111 expand, the expansion force of the first battery cells 2111 in the middle along the second direction B is the largest, and by connecting the support bar 31 to the middle of the first battery cells 2111 along the second direction B, the expansion of the first battery cells 2111 in the middle along the second direction B can be effectively limited, reducing the deformation of the first battery cells 2111.

[0074] In another embodiment, referring to Figures 8 to 10 as shown, the multiple support bars 31 may further include multiple second support bars 312, and each second support bar 312 is connected to two adjacent first battery cell groups 211.

[0075] In this embodiment, on the one hand, the second support bar 312 can limit the expansion force of the first battery cells 2111 in the two first battery cell groups 211 connected thereto; on the other hand, the second support bar 312 can also connect two adjacent first battery cell groups 211, so as to fix the multiple first battery cell groups 211 in the battery module 2 and improve the overall stiffness of the battery module 2.

[0076] For example, as shown in Figure 9 and Figure 10 , a first gap 210 is spaced between every two adjacent first battery cell groups 211 in the second direction B; the second support bar 312 includes a first support body 3121, a first support block 3122, and a second support block 3123. The first support block 3122 and the second support block 3123 are protrudingly provided on both sides of the support body 3121 along the third direction C. The dimension of the first support body 3121 in the second direction B is greater than the dimensions of the first support block 3122 and the second support block 3123 in the second direction B. One side of the first support block 3122 away from the support body 3121 in the third direction C supports on the inner wall of the upper cover 11, the second support block 3123 is disposed in the first gap 210, and the first support body 3121 connects two adjacent first battery cell groups 211; wherein, the first direction A, the second direction B, and the third direction C are arranged to intersect pairwise.

[0077] In this embodiment, the shape of the second support bar 312 can be understood as having a cross-sectional shape configured as a "cross shape". The first support block 3122 of the second support bar 312 in the "cross shape" supports on the inner wall of the upper cover 11, the second support block 3123 is disposed in the first gap 210 between two adjacent first battery cell groups 211, and the first support body 3121 connects two adjacent first battery cell groups 211. Among them, by disposing the second support block 3123 in the first gap 210, on the one hand, it can play a role in pre-positioning the second support bar 312, and on the other hand, it can limit the crosstalk of the first battery cell group 211 in the second direction B and improve the overall stability of the battery module 2. However, the present disclosure does not limit the specific structural shape of the second support bar 312. In other embodiments, the cross-sectional shape of the second support bar 312 is also configured as a "T shape".

[0078] Optionally, as shown in Figure 1 and Figure 4 , multiple first support bars 311 and / or multiple second support bars 312 can divide the first space 110 into multiple first sub-spaces in the second direction B, and the filling glue 4 is filled in the multiple first sub-spaces.

[0079] First, in addition to serving as a support, the above-mentioned first support bar 311 and / or second support bar 312 can also partition the first space 110 between the upper cover 11 and the battery module 2. The filling glue 4 is filled in the multiple first sub-spaces after partitioning, avoiding overall pouring of glue into the first space 110, and improving the uniformity of the filling of the first space 110 with the filling glue 4.

[0080] For example, the above-mentioned first support bar 311 and / or second support bar 312 can partition the first space 110 into multiple first sub-spaces with the same volume. There is no need to calculate the filling amount of the filling glue 4 for each first sub-space. Calculating the filling amount of one of the first sub-spaces is sufficient, which improves the convenience of filling the filling glue 4.

[0081] Secondly, the combination of the first support bar 311, the second support bar 312, and the filling glue 4 can achieve a similar effect to the pouring and repair of reinforced concrete, improving the stiffness of the battery module 2 while also improving the stiffness of the entire battery pack 100.

[0082] In addition, in order to maximize the volume utilization rate of the battery module 2, the gap (i.e., the first space 110) between the upper cover 11 and the battery module 2 can be made as small as possible. In the case where the filling gap is small, in order to avoid contact wear between the battery module 2 and the upper cover 11, by setting the first support bar 311 and / or the second support bar 312, a safety gap can be ensured between the battery module 2 and the upper cover 11, thereby making it possible to fill the filling glue 4 into the first space 110.

[0083] Optionally, referring to Figure 1 、 Figures 6 to 10 As shown, the battery module 2 includes two first outer sidewalls 201 arranged back to back in the first direction A, and the battery pack housing 1 includes two first inner sidewalls 101 arranged opposite to each other in the first direction A. The first inner sidewall 101 and the corresponding first outer sidewall 201 are spaced apart in the first direction A to form a second space, and the filling glue 4 is filled in the second space. The ends of the first support bar 311 and / or the second support bar 312 in the first direction A are flush with the first outer sidewall 201; alternatively, the ends of the first support bar 311 and / or the second support bar 312 in the first direction A are in contact with the first inner sidewall 101. The present disclosure does not limit the extension length of the first support bar 311 and / or the second support bar 312 in the first direction A.

[0084] Optionally, referring to Figures 6 to 8As shown, the support bar 31 may include a support body 3101 and a support block 3102; both the support body 3101 and the support block 3102 extend along the first direction A, the support block 3102 is convexly provided on the support body 3101 along the third direction C, and the dimension of the support body 3101 in the second direction B is greater than the dimension of the support block 3102 in the second direction B. One side of the support body 3101 away from the support block 3102 in the third direction C supports the battery cell 21, and one side of the support block 3102 away from the support body 3101 in the third direction C supports the inner wall of the upper cover 11; wherein, the first direction A, the second direction B, and the third direction C are pairwise intersecting.

[0085] First, by making the dimension of the support body 3101 in the second direction B greater than the dimension of the support block 3102 in the second direction B, on the one hand, the support body 3101 with a larger dimension in the second direction B supports the battery cell 21 of the battery module 2, realizing the contact between the large surface of the support bar 31 and the battery cell 21, improving the stability of the support for the battery module 2, and also being able to more effectively limit the expansion of the battery cell 21; on the other hand, in order to fill the first space 110 with the filling glue 4 as much as possible, the support block 3102 with a smaller dimension in the second direction B can reduce the occupation of the first space 110 while supporting the upper cover 11, and improve the filling rate of the filling glue 4 in the first space 110.

[0086] Secondly, referring to Figure 7 and Figure 8 As shown, for the structural shape of the support bar 31, that is, the cross-section is constructed as a "T shape", the cross-sections of the above-mentioned first support bar 311 and the above-mentioned second support bar 312 can both be constructed as this "T shape", and the present disclosure does not limit this.

[0087] Referring to Figure 6 As shown, the dimension of the support block 3102 in the second direction B can be between 1 mm and 3 mm. For example, the dimension of the support block 3102 in the second direction B can be 1 mm, can be 2 mm, or can be 3 mm, and the present disclosure does not limit the specific dimension.

[0088] The dimension of the support block 3102 in the third direction C can be between 0.5 mm and 5 mm. For example, the dimension of the support block 3102 in the third direction C can be 0.5 mm, can be 3 mm, or can be 5 mm, and the present disclosure does not limit the specific dimension.

[0089] The dimension of the support body 3101 in the second direction B can be between 5 mm and 30 mm. For example, the dimension of the support body 3101 in the second direction B can be 5 mm, can be 10 mm, or can be 30 mm, and the present disclosure does not limit the specific dimension.

[0090] The dimension of the support body 3101 in the third direction C can be between 1 mm and 5 mm. For example, the dimension of the support body 3101 in the third direction C can be 1 mm, can be 3 mm, or can be 5 mm. The present disclosure does not limit the specific dimension.

[0091] In addition, for the above-mentioned support structure 3, it can be made of an insulating material, and the insulating material includes a plastic material. The support structure 3 can be integrally extruded and formed with a plastic material.

[0092] For example, the above-mentioned support bar 31 can be integrally extruded and formed with polyurethane. The tensile strength of the support bar 31 made of polyurethane: ≥1000 Mpa at -40°C, ≥1000 Mpa at room temperature, ≥800 Mpa at 85°C. Elastic modulus: ≥45 Gpa at -40°C, ≥45 Gpa at room temperature, ≥40 Gpa at 85°C. Bending modulus: ≥45 Gpa at -40°C, ≥45 Gpa at room temperature, ≥40 Gpa at 85°C, and density ≤2.2 g / cm³. Alternatively, the above-mentioned support bar 31 can also be extruded and formed with aluminum and an insulating layer is provided on the outer surface.

[0093] Optionally, referring to Figure 1 As shown, the battery module 2 includes a battery cell assembly 22 and a module side plate 23. The battery cell assembly 22 includes a plurality of battery cells 21; the battery pack 100 further includes a liquid cooling plate 6; the module side plate 23 is connected to the side of the battery cell assembly 22, and the liquid cooling plate 6 is connected to the side of the battery cell assembly 22 away from the upper cover 11, and the liquid cooling plate 6 is connected to the inner wall of the housing body 12.

[0094] In this embodiment, by providing the module side plate 23 on the side of the battery cell assembly 22, the expansion and deformation of the battery cells 21 can be restricted to a certain extent. Further, a support structure 3 is provided above the plurality of battery cells 21, and the support structure 3 supports the battery module 2 and the upper cover 11, and a liquid cooling plate 6 is connected to the lower part of the plurality of battery cells 21, and the liquid cooling plate 6 is connected to the lower inner wall of the housing body 12, so that the entire outer periphery of the plurality of battery cells 21 can be wrapped and tightened, and the expansion of the plurality of battery cells 21 can be restricted in all directions, which is beneficial to extending the service life of the battery cells 21 and reducing the expansion and deformation of the battery cells 21.

[0095] Among them, when assembling the battery pack 100, the liquid cooling plate 6 can be first fixed inside the housing body 12; then the support structure 3 is fixed to the upper surface of the battery module 2 by structural adhesive, and then the battery module 2 with the support structure 3 fixed thereon is assembled into the housing body 12 with the liquid cooling plate 6 fixed therein. A thermal conductive structural adhesive is applied between the bottom of the battery module 2 and the liquid cooling plate 6. Then, the filling adhesive 4 is poured into the internal space of the housing body 12 for foaming. Finally, the upper cover 11 is sealingly connected to the opening of the housing body 12.

[0096] The present disclosure further provides a vehicle, which includes the above-mentioned battery pack 100.

[0097] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0098] It should be understood that the present disclosure is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A battery pack, characterized in that, Comprising: A battery pack housing, a battery module, a support structure, and a filling adhesive. A battery cavity is formed inside the battery pack housing. The battery module is disposed in the battery cavity, and a first space is provided between the battery module and the upper cover of the battery pack housing at an interval. Wherein, the support structure is disposed in the first space, and one side of the support structure is supported on the inner wall of the upper cover, and the other side is supported on the battery module; the filling adhesive is filled in the first space.

2. The battery pack according to claim 1, wherein, The battery module includes a plurality of battery cells, and the plurality of battery cells are arranged in sequence along a first direction. The support structure includes at least one support bar, the support bar extends along the first direction, and is connected to at least two battery cells on the side close to the upper cover. Wherein, the first direction is the thickness direction of the battery cell.

3. The battery pack according to claim 2, characterized in that, The support bar is connected to the middle of the battery cell along a second direction; the first direction intersects with the second direction.

4. The battery pack according to claim 2 or 3, characterized in that, The explosion-proof valve of the battery cell is disposed on the side of the battery cell away from the upper cover.

5. The battery pack according to claim 2 or 3, characterized in that, The battery cell includes a battery cell body and an insulating layer, and the insulating layer is at least partially disposed on the side of the battery cell body close to the upper cover. The insulating layer is provided with a notch, and the support bar is connected to the battery cell body through the notch.

6. The battery pack according to claim 5, characterized in that The support bar is bonded to the battery cell body exposed from the notch through a second adhesive.

7. The battery pack according to claim 2, characterized in that, The plurality of battery cells include a plurality of first battery cell groups, and the plurality of first battery cell groups are arranged along the second direction. The first battery cell group includes a plurality of first battery cells arranged in sequence along the first direction. Each of the first battery cell groups is connected to at least one first support bar, and the first support bar is connected to the middle of the corresponding first battery cell group along the second direction; the first direction intersects with the second direction.

8. The battery pack according to claim 7, wherein A first gap is provided between two adjacent first battery cell groups in the second direction, and at least one second support bar is connected between two adjacent first battery cell groups. The second support bar includes a first support body, and a first support block and a second support block protruding from both sides of the support body along a third direction. The first support block is supported on the inner wall of the upper cover, the second support block is disposed in the first gap, and the first support body connects two adjacent first battery cell groups. Wherein, the first direction, the second direction, and the third direction intersect pairwise.

9. The battery pack according to claim 8, wherein, The battery module includes two first outer walls disposed opposite to each other along the first direction, and the battery pack housing includes two first inner walls disposed opposite to each other along the first direction. The first inner wall and the corresponding first outer wall are spaced apart in the first direction to form a second space, and the filling adhesive is filled in the second space. The end of the first support bar and / or the second support bar along the first direction is flush with the first outer wall; or, the end of the first support bar and / or the second support bar along the first direction abuts against the first inner wall.

10. The battery pack according to claim 2, wherein, The support bar includes a support body and a support block that are both arranged to extend along a first direction; The support block is convexly arranged on the support body along a third direction, and the dimension of the support body in a second direction is greater than the dimension of the support block in the second direction; One side of the support body away from the support block in the third direction is connected to the battery cell, and one side of the support block away from the support body in the third direction supports on the inner wall of the upper cover; Wherein, the first direction, the second direction and the third direction are arranged to intersect pairwise.

11. The battery pack according to claim 10, characterized in that, The dimension of the support block in the second direction is between 1 mm and 3 mm, and the dimension of the support block in the third direction is between 0.5 mm and 5 mm; The dimension of the support body in the second direction is between 5 mm and 30 mm, and the dimension of the support body in the third direction is between 1 mm and 5 mm.

12. The battery pack according to any one of claims 1-3, characterized in that, The support structure is made of an insulating material, the insulating material includes a plastic material, and the support structure is integrally extruded and formed using a plastic material.

13. A vehicle, characterized in that, The vehicle includes the battery pack according to any one of claims 1-12.

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