Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment, the battery pack electric equipment comprises a battery box body, a battery monomer and filling glue, the battery box body is internally provided with an accommodating space, the upper end of the accommodating space is open, the battery monomer is located in the accommodating space, and the filling glue is arranged to be capable of sealing the upper end of the accommodating space so as to be used as an upper cover of the battery box body. According to the battery pack disclosed by the invention, an upper cover of the battery box body is replaced by the filling glue, so that the upper cover does not need to be locked at the upper end of the side edge beam through a bolt, the risk of sealing failure of the accommodating space caused by back-twisting of the bolt is reduced, the safety of the battery is improved, and the battery pack is convenient to use. According to the battery pack, a connecting piece between the upper cover and the side edge beam and a sealing piece between the upper cover and the side edge beam can be saved, so that the problems of abnormal sound of the battery pack, bulge of the upper cover and out-of-tolerance profile tolerance of the upper cover can be solved, and the weight of the battery pack can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of battery pack, and particularly relates to a battery pack and an electrical equipment. BACKGROUND

[0002] The battery pack is a device for providing energy for the electrical equipment, and is a core component of the electrical equipment. The battery pack comprises a battery box body and a battery monomer. The battery monomer is contained in a containing space in the battery box body. How to improve the safety of the battery pack and reduce the weight of the battery pack has become a research direction in the field. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present disclosure is to provide a battery pack and an electrical equipment to solve the above technical problems.

[0004] In order to achieve the above purpose, according to a first aspect of the present disclosure, a battery pack is provided, comprising a battery box body, a battery monomer and a filling glue.

[0005] The battery box body has a containing space. The containing space is open at the upper end. The battery monomer is located in the containing space. The filling glue is arranged to close the upper end of the containing space, so as to serve as an upper cover of the battery box body.

[0006] Optionally, the filling glue comprises a first part and a second part connected with each other. The second part is arranged around the first part.

[0007] The first part closes the upper end of the containing space. The second part is connected to the upper end of the side beam of the battery box body.

[0008] Optionally, the second part and one of the side beams are provided with a recess, and the other is provided with a convex part embedded with the recess.

[0009] Optionally, the upper end of the side beam is provided with the recess. The recess is configured as a strip-shaped recess extending along the length direction of the side beam.

[0010] Optionally, the upper end of the side beam is provided with the recess. The size L1 of the recess in the width direction of the side beam is 3mm-6mm; and / or,

[0011] The upper end of the side beam is provided with the recess. The depth L2 of the recess is 2mm-4mm.

[0012] Optionally, the upper end of the side beam is provided with a threaded connection hole. The threaded connection hole is used to be connected with a bolt of a glue pouring mold.

[0013] In the width direction of the side beam, the distance L3 from the inner wall of the side beam to the threaded connection hole is not less than 8mm.

[0014] Optionally, the upper end of the side beam is provided with the recess and a threaded connecting hole for connecting with a bolt of the glue pouring mold.

[0015] The recess is closer to the accommodating space than the threaded connecting hole along the width direction of the side beam.

[0016] Optionally, the second part comprises a main body and the convex part connected to the main body, and the thickness L4 of the main body is 2.3mm-2.7mm.

[0017] Optionally, at least part of the filling glue is foamed glue.

[0018] Optionally, the battery pack further comprises an external connecting piece embedded in the filling glue, the lower end of the external connecting piece is connected to the bottom plate structure of the battery box, and the upper end of the connecting piece is used for connecting with an external mechanism.

[0019] Optionally, the external connecting piece is located in the middle of the accommodating space.

[0020] Optionally, the external connecting piece comprises a threaded sleeve.

[0021] Optionally, the battery box comprises a bottom plate structure.

[0022] The bottom plate structure comprises a bottom guard plate and a support plate.

[0023] The support plate is adapted to support the battery monomer.

[0024] According to a second aspect of the present disclosure, a power consuming device is provided, comprising the above-mentioned battery pack.

[0025] Through the above technical solution, after the battery monomer is placed in the accommodating space, the upper end of the accommodating space can be closed by the filling glue. Since the filling glue has certain structural strength and good sealing performance after solidification, the impact or collision that the battery monomer may suffer can be reduced, and the risk of contact between the battery monomer and the medium outside can be reduced. Therefore, the above-mentioned setting of the filling glue can replace the upper cover of the battery box, so that the upper cover does not need to be locked to the upper end of the side beam by the bolt, thereby facilitating the reduction of the risk of sealing failure of the accommodating space caused by bolt back-off, and further facilitating the improvement of the safety of the battery.

[0026] Moreover, by replacing the upper cover with the filling glue, the upper cover of the battery box in the related art is omitted, and the connecting piece and the sealing piece between the upper cover and the side beam can also be saved, thereby facilitating the reduction of the weight of the battery pack.

[0027] It should be understood that the general description and detailed description, which follow, are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure, in which, like reference numerals designate corresponding parts throughout the several views.

[0029] Figure 1 is a schematic diagram of an explosion of a battery pack according to an embodiment of the present disclosure.

[0030] Figure 2 is a schematic diagram of a battery pack arranged with a glue-filling mold according to an embodiment of the present disclosure.

[0031] Figure 3 is a schematic diagram of a battery pack according to an embodiment of the present disclosure.

[0032] Figure 4 is a schematic diagram of a battery pack according to an embodiment of the present disclosure.

[0033] Figure 5 is a schematic diagram of a battery pack according to an embodiment of the present disclosure, in which the gas exhaust path is schematically shown with dashed arrows.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1000 - battery pack; 100 - battery box; 110 - accommodation space; 120 - side beam; 121 - recess; 122 - threaded connection hole; 123 - exhaust port; 124 - battery pack explosion-proof valve; 130 - bottom plate structure; 131 - bottom guard plate; 132 - support plate; 1321 - avoiding opening; 133 - exhaust passage; 200 - battery monomer; 300 - glue filling; 310 - first part; 320 - second part; 321 - protrusion; 322 - main body part; 400 - external connection; 410 - threaded sleeve; 2000 - glue-filling mold; 2100 - glue injection opening. DETAILED DESCRIPTION

[0036] The specific embodiments of the present disclosure will be described in detail hereinafter with reference made to the accompanying drawings. It should be understood that the specific embodiments described herein are merely exemplary and explanatory, and are not intended to limit the present disclosure.

[0037] In the present disclosure, unless otherwise stated, the orientation words such as "upper", "lower", "top", "bottom" are generally defined with the upper, lower, top and bottom of the battery pack in the normal use state, which is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, and a particular orientation configuration and operation, and therefore cannot be understood as a limitation on the present disclosure. "Inner" and "outer" refer to the inner and outer contours of the corresponding components. In addition, the terms "first", "second", etc. are used to distinguish one element from another, and do not have sequentiality and importance.

[0038] In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "connected", "mounted" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0039] Research has found that in the related art, the battery box body generally includes a bottom guard plate, a side beam and an upper cover, the bottom guard plate and the side beam surrounding the four sides of the bottom guard plate together enclose an accommodating space with an open upper end, and the upper cover is locked to the upper end of the side beam by bolts to close the upper end of the accommodating space. However, during the use of the battery pack, there is a risk of sealing failure of the accommodating space due to bolt loosening, affecting the safety of the battery pack.

[0040] Therefore, as shown in the accompanying drawings, Figures 1 to 5 According to a first aspect of the present disclosure, a battery pack 1000 is provided, which includes a battery box body 100, a battery monomer 200 and a filling glue 300. The battery box body 100 has an accommodating space 110 therein, the upper end of the accommodating space 110 is open, the battery monomer 200 is located in the accommodating space 110, and the filling glue 300 is arranged to close the upper end of the accommodating space 110 to serve as an upper cover of the battery box body 100.

[0041] Through the above technical solution, after the battery monomer 200 is placed in the accommodating space 110, the upper end of the accommodating space 110 can be closed by the filling glue 300. Since the filling glue 300 has a certain structural strength and good sealing performance after solidification, the impact or collision that the battery monomer 200 may be subjected to can be reduced, and the risk of contact between the battery monomer 200 and the medium outside can be reduced. Therefore, the above arrangement of the filling glue 300 can replace the upper cover of the battery box body 100, so that the upper cover does not need to be locked to the upper end of the side beam 120 by bolts, thereby facilitating the reduction of the risk of sealing failure of the accommodating space 110 due to bolt loosening, and further facilitating the improvement of the safety of the battery.

[0042] And, by filling the glue 300 instead of the upper cover, the upper cover of the battery box in the related art is saved, and the use of the connecting piece between the upper cover and the side beam 120 and the sealing piece between the upper cover and the side beam 120 is also saved, so that not only the problems of abnormal sound, upper cover bulging, and upper cover profile tolerance of the battery pack 1000 can be improved, but also the weight of the battery pack 1000 can be reduced. In the embodiment in which the electrical equipment is a vehicle, by using the battery box 100 provided by the present disclosure, more available weight can be left for the vehicle for safety protection and other designs under the condition that the vehicle has the same charging capacity, or more battery monomers 200 can be arranged in the vehicle under the condition that the vehicle has the same weight, so that the vehicle obtains more charging capacity, thereby improving the endurance of the vehicle.

[0043] In addition, after the filling glue 300 solidifies, the upper end of the battery monomer 200, the components located above the battery monomer 200, and the side beam 120 can be fixed together, thereby reducing the risk of structural looseness in the accommodation space 110, and improving the overall rigidity and modal of the battery pack 1000.

[0044] It can be understood that the up-down direction of the battery pack 1000 refers to the up-down direction in the use state, for example, when the battery pack 1000 is installed in a vehicle, the upper side of the battery pack 1000 is the direction away from the ground, and the lower side of the battery pack 1000 is the direction close to the ground.

[0045] The present disclosure does not limit the filling method of the filling piece, and as an embodiment, as shown in Figure 2 , a glue filling mold 2000 is provided, the inner wall of the glue filling mold 2000 is coated with an anti-gluing coating, and an injection port 2100 is arranged at the upper end. After the relevant structural pieces of the battery pack 1000 are assembled, the glue filling mold 2000 can be locked on the side beam 120, and the filling glue 300 is filled into the accommodation space 110 through the injection port 2100. After the filling glue 300 solidifies, the glue filling mold 2000 is removed. At this time, the filling glue 300 is connected with the side beam 120, and the upper end of the accommodation space 110 is closed, thereby replacing the upper cover and the sealing piece between the upper cover and the side beam 120.

[0046] Optionally, as shown in Figure 3 and Figure 4 , the filling glue 300 includes a first part 310 and a second part 320 connected with each other, the second part 320 is arranged around the first part 310, the first part 310 closes the upper end of the accommodation space 110, and the second part 320 is connected to the upper end of the side beam 120 of the battery box 100.

[0047] By closing the upper end of the containing space 110 with the first part 310, the impact or collision that the battery monomer 200 can suffer from can be reduced, and the risk of the battery monomer 200 contacting the medium outside can be reduced. By connecting the upper end of the side beam 120 with the second part 320, the connection strength between the filler and the side beam 120 can be improved, and the contact area between the filler and the side beam 120 can be increased, thereby facilitating the improvement of the sealing performance of the containing cavity.

[0048] In order to improve the connection reliability and sealing performance between the second part 320 and the side beam 120, as a first embodiment, as shown in Figure 4 The second part 320 and one of the side beams 120 are provided with a recess 121, and the other is provided with a convex part 321 embedded with the recess 121. By embedding the convex part 321 and the recess 121, the contact area between the filler 300 and the side beam 120 can be increased, which is not only conducive to improving the connection reliability between the two, but also conducive to improving the sealing performance between the two.

[0049] The present disclosure does not limit the structure of the recess 121, and as an embodiment, as shown in Figure 4 The upper end of the side beam 120 is provided with a recess 121, and the recess 121 is configured as a strip-shaped recess 121 extending along the length direction of the side beam 120. By configuring the recess 121 as a strip-shaped recess 121 extending along the length direction of the side beam 120, on the one hand, it is conducive to increasing the contact area between the filler 300 and the side beam 120, improving the connection reliability between the two, on the other hand, it can play a role in guiding the flow of the filler 300, which is conducive to improving the uniformity of the second part 320 in the length direction of the side beam 120, and on the other hand, the recess 121 is configured as a strip, which is convenient for processing, and is conducive to reducing the processing difficulty of the side beam 120.

[0050] Moreover, the recess 121 can be set to any suitable size as required, and the present disclosure does not limit this, and as an embodiment, as shown in Figure 4 The upper end of the side beam 120 is provided with a recess 121, and the size L1 of the recess 121 in the width direction of the side beam 120 is 3mm-6mm, and / or the upper end of the side beam 120 is provided with a recess 121, and the depth L2 of the recess 121 is 2mm-4mm. By setting in this way, the filler and the side beam 120 have a suitable contact area, which saves the use of the filler 300 while ensuring the connection reliability and sealing performance between the second part 320 and the side beam 120.

[0051] As another embodiment of the present disclosure, the recess 121 can be configured as a plurality of block-shaped recesses 121, and the plurality of block-shaped recesses 121 are arranged in a spaced manner along the length direction of the side beam 120.

[0052] Optionally, as shown in Figure 4 the upper end of the side beam 120 can be provided with a threaded connection hole 122 for connecting with the bolt of the glue filling mold 2000, and the distance L3 from the inner wall of the side beam 120 to the threaded connection hole 122 in the width direction of the side beam 120 is not less than 8 mm. The threaded connection hole 122 can facilitate the locking of the glue filling mold 2000 to the side beam 120, for example, the bolt of the glue filling mold 2000 can be screwed through the glue filling mold 2000 and connected with the threaded connection hole 122, so as to lock the glue filling mold 2000 to the side beam 120.

[0053] Since the bolt of the glue filling mold 2000 needs to be connected to the threaded connection hole 122 during the filling and solidification process of the filling glue 300, there will be a gap corresponding to the threaded connection hole 122 after the glue filling mold is removed, so that the medium (such as water) outside can contact the sealing surface between the second part 320 and the side beam 120 through the gap. Therefore, the distance from the inner wall of the side beam 120 to the threaded connection hole 122 in the width direction of the side beam 120 is set to be not less than 8 mm, which can ensure that the second part 320 and the side beam 120 have sufficient sealing area, thereby facilitating the reduction of the risk of sealing failure of the containing space 110.

[0054] Optionally, referring to Figure 4 the upper end of the side beam 120 is provided with a recess 121 and a threaded connection hole 122, and in the embodiment in which the threaded connection hole 122 is used for connecting with the bolt of the glue filling mold 2000, the recess 121 is closer to the containing space 110 relative to the threaded connection hole 122 in the width direction of the side beam 120, that is, the recess 121 is located on the inner side of the threaded connection hole 122, for example, as shown in Figure 4 the recess 121 is located between the threaded connection hole 122 and the inner wall of the side beam 120. By making the recess 121 closer to the containing space 110 relative to the threaded connection hole 122, as discussed above, it is beneficial to further increase the sealing area between the second part 320 and the side beam 120, improve the sealing ability of the second part 320 and the side beam 120, and thereby further reduce the risk of sealing failure of the containing space 110.

[0055] In order to ensure the structural strength of the second part 320, as an embodiment, as shown in Figure 2 the second part 320 includes a main body part 322 and a convex part 321 connected to the main body part 322, and the thickness L4 of the main body part 322 is 2.3 mm to 2.7 mm. By setting the thickness of the main body part 322 in this range, the use of the filling glue 300 can be saved while ensuring that the second part 320 has sufficient structural strength.

[0056] The present disclosure does not limit the type of the filling glue 300, and as an embodiment, at least part of the filling glue 300 is foamed glue. Since the foamed glue has lighter weight and lower cost at the same volume, at least part of the filling glue 300 being foamed glue is beneficial to reduce the weight of the battery box 100 and the manufacturing cost of the battery box 100, thereby being beneficial to reduce the weight of the battery pack 1000 and the manufacturing cost of the battery pack 1000.

[0057] As another embodiment of the present disclosure, at least part of the filling member can be structural glue.

[0058] Optionally, as shown in Figure 3 , Figure 5 and Figure 5 , the battery pack 1000 further comprises an external connecting member 400, the external connecting member 400 is embedded in the filling glue 300, the lower end of the external connecting member 400 is connected to the bottom plate structure 130 of the battery box 100, and the upper end of the connecting member is used to be connected with an external mechanism.

[0059] Since the lower end of the external connecting member 400 is connected to the bottom plate structure 130 of the battery box 100, the external connecting member 400 can be used as a mounting point for connecting the battery pack 1000 with an external mechanism, so that the overall weight of the battery pack 1000 can be transmitted to the external mechanism through the bottom plate structure 130 and the external connecting member 400, for example, the external connecting member 400 can be connected with the chassis of a vehicle, so that the battery pack 1000 is mounted at the bottom of the vehicle.

[0060] In addition, since the external connecting member 400 is embedded in the filling glue 300, that is, the filling member wraps around the outer peripheral wall of the external connecting member 400 as shown in Figure 2 , the connecting member and the filling member can have good sealing property, thereby being beneficial to reduce the risk of the medium from the outside entering the containing space 110 along the external connecting member 400, and further being beneficial to improve the sealing property of the containing space 110.

[0061] In addition, the external connecting member 400 is embedded in the filling glue 300, which is also beneficial to improve the connection strength between other structures of the battery box 100 and the external connecting member 400, thereby being beneficial to improve the mounting capacity of the external connecting member 400.

[0062] In the present disclosure, the position of the external connecting member 400 relative to the containing space 110 can be reasonably set according to requirements, and as an embodiment, as shown in Figure 3 , Figure 5 and Figure 5As shown, the external connecting member 400 is located in the middle of the accommodating space 110. In this way, when the external connecting member 400 is connected with the external mechanism, it is beneficial to balance the force borne by the external connecting member 400, thereby reducing the risk of damage to the external connecting member 400 due to uneven force, and improving the overall weight of the battery pack 1000 that the external connecting member 400 can bear.

[0063] As another embodiment, the external connecting member 400 can be multiple, and the multiple external connecting members 400 are symmetric about the center of the accommodating space 110.

[0064] The present disclosure does not limit the structure of the external connecting member 400, and as an embodiment, the external connecting member 400 can include a threaded sleeve 410. Figure 1 As shown, the external connecting member 400 includes a threaded sleeve 410. The threaded sleeve 410 can facilitate threaded connection with the bolt of the external mechanism, for example, when the electrical equipment is a vehicle, the bolt of the vehicle can be threaded from top to bottom through the chassis of the vehicle and threaded connected with the threaded sleeve 410, thereby achieving the mounting of the battery pack 1000 at the bottom of the vehicle.

[0065] And when filling the potting adhesive 300, the threaded sleeve 410 can be threaded out of the potting mold 2000, and a nut can be threaded on the threaded sleeve 410, thereby better locking the potting mold 2000 to the side beam 120.

[0066] As another embodiment of the present disclosure, the external connecting member 400 can also include a flange and related fasteners.

[0067] Optionally, as shown in Figure 5 and Figure 5 As shown, the battery box 100 includes a bottom plate structure 130, the bottom plate structure 130 includes a bottom guard plate 131 and a support plate 132, and the bottom guard plate 131 and the support plate 132 have an exhaust passage 133 therebetween, the exhaust passage 133 is used for exhausting gas from the explosion-proof valve of the battery monomer 200, and the support plate 132 is adapted to support the battery monomer 200.

[0068] In this way, when the battery monomer 200 is in thermal runaway, the explosion-proof valve of the battery monomer 200 can exhaust the gas through the exhaust passage 133 to the outside of the battery box 100, thereby reducing the risk of combustion or explosion of the battery pack 1000.

[0069] And since the exhaust is located between the bottom guard plate 131 and the support plate 132, and the support plate 132 is adapted to support the battery monomer 200, the explosion-proof valve of the battery monomer 200 can spray the gas towards the lower side of the battery monomer 200, i.e. when the electrical equipment is a vehicle, the gas is sprayed towards the ground, thereby facilitating the protection of the safety of the passengers in the vehicle.

[0070] Optionally, the support plate 132 can be a heat exchange plate (also referred to as a liquid cooling plate) of the battery box 100.

[0071] In order to facilitate the gas of the explosion-proof valve of the battery cell 200 to enter the exhaust passage 133, as an embodiment, as shown in Figure 1 The support plate 132 is provided with a relief port 1321, which is adapted to communicate the explosion-proof valve of the battery cell 200 with the exhaust passage 133. By providing the relief port 1321 on the support plate 132, the support plate 132 can support the battery cell 200, and the gas discharged by the explosion-proof valve of the battery cell 200 can pass through and enter the exhaust passage 133.

[0072] As another embodiment of the present disclosure, a weak part can also be provided on the relief plate, which can be broken or fallen under the action of the temperature, pressure, etc. of the gas discharged by the explosion-proof valve of the battery cell 200, so that the gas discharged by the explosion-proof valve of the battery cell 200 can pass through the support plate 132 and enter the exhaust passage 133.

[0073] Optionally, as shown in Figure 2 , Figure 3 , Figure 5 and ​ , the side beam 120 of the battery box 100 is provided with an exhaust port 123 for communicating with the exhaust passage 133 and a battery pack explosion-proof valve 124 mounted on the exhaust port 123.

[0074] When the battery pack 1000 is normally used, the battery pack explosion-proof valve 124 can close the exhaust port 123, thereby facilitating the sealing of the containment space 110. When the battery cell 200 is in thermal runaway, the battery pack explosion-proof valve 124 can open the exhaust port 123, so that the gas discharged by the explosion-proof valve of the battery cell 200 can be discharged to the outside of the battery box through the exhaust passage 133 and the exhaust port 123, avoiding overpressure inside the battery box 100.

[0075] According to a second aspect of the present disclosure, a power consuming device is provided, which comprises the above-mentioned battery pack 1000.

[0076] Optionally, the power consuming device can be a vehicle, or any other device suitable for using the above-mentioned battery pack 1000, and the present disclosure does not limit the same.

[0077] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0078] It should be further noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner, and the disclosure will not be repeated here for various possible combinations.

[0079] In addition, various different embodiments of the disclosure can also be combined with each other as long as they do not contradict the idea of the disclosure, and they should also be considered as disclosed by the disclosure.

Claims

1. A battery pack, characterized in that, Includes battery housing, individual battery cells, and filler adhesive; The battery box has a receiving space, the upper end of which is open. The battery cell is located within the receiving space, and the filler adhesive is configured to close the upper end of the receiving space, serving as the top cover of the battery box.

2. The battery pack according to claim 1, characterized in that, The filler adhesive includes a first part and a second part connected together, with the second part arranged around the first part; The first part encloses the upper end of the accommodating space, and the second part is connected to the upper end of the side beam of the battery box.

3. The battery pack according to claim 2, characterized in that, The second part has a recess in one of the side beams and a protrusion that is fitted into the recess in the other.

4. The battery pack according to claim 3, characterized in that, The upper end of the side beam is provided with the recess, which is constructed as a strip-shaped recess extending along the length direction of the side beam.

5. The battery pack according to claim 3, characterized in that, The upper end of the side beam is provided with the recess, and the dimension L1 of the recess in the width direction of the side beam is 3mm~6mm; and / or, The upper end of the side beam is provided with the recess, and the depth L2 of the recess is 2mm~4mm.

6. The battery pack according to claim 2, characterized in that, The upper end of the side beam is provided with a threaded connection hole, which is used to connect with the bolt of the glue-pouring mold. Along the width direction of the side beam, the distance L3 from the inner wall of the side beam to the threaded connection hole is not less than 8mm.

7. The battery pack according to claim 3, characterized in that, The upper end of the side beam is provided with the recess and the threaded connection hole, the threaded connection hole being used to connect with the bolt of the potting mold; Along the width direction of the side beam, the recess is closer to the receiving space than the threaded connection hole.

8. The battery pack according to claim 3, characterized in that, The second part includes a main body and a protrusion connected to the main body, wherein the thickness L4 of the main body is 2.3 mm to 2.7 mm.

9. The battery pack according to claim 1, characterized in that, At least a portion of the filler is expanding foam.

10. The battery pack according to any one of claims 1-9, characterized in that, The battery pack also includes external connectors; The external connector is embedded in the filler adhesive, the lower end of the external connector is connected to the bottom plate structure of the battery box, and the upper end of the connector is used to connect to an external mechanism.

11. The battery pack according to claim 10, characterized in that, The external connector is located in the middle of the accommodating space.

12. The battery pack according to claim 10, characterized in that, The external connector includes a threaded sleeve.

13. The battery pack according to any one of claims 1-9, characterized in that, The battery housing includes a base plate structure; The base plate structure includes a bottom protective plate and a support plate; The support plate is adapted to support individual battery cells.

14. An electrical appliance, characterized in that, Includes the battery pack according to any one of claims 1-13.

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