CN215680796U - Battery pack and vehicle - Google Patents

Abstract

The present disclosure relates to the field of vehicle technology, and in particular, to a battery pack and a vehicle. The present disclosure provides a battery pack including: the liquid cooling device comprises a box body, wherein a liquid cooling pipe is arranged in the box body, the end part of the liquid cooling pipe is connected with a first connecting piece, the first connecting piece is arranged in the box body, the first connecting piece is provided with a first channel, and the first channel is communicated with the liquid cooling pipe; a second connecting piece is arranged outside the box body, the second connecting piece is provided with a boss, and the boss is provided with a second channel penetrating through the second connecting piece; the box body is provided with a first through hole, the boss penetrates through the first through hole to be detachably connected with the first connecting piece, and the second channel is communicated with the first channel. The vehicle provided by the disclosure comprises the battery pack provided by the disclosure, the problems that the operation is complex, the occupied space is large and the arrangement of other parts is influenced in the installation process are effectively solved, and the complexity and the manual use cost in the after-sale maintenance and disassembly process are reduced.

Description

Battery pack and vehicle

Technical Field

The present disclosure relates to the field of vehicle technology, and in particular, to a battery pack and a vehicle.

Background

Along with the national strong advocation of green travel, the electric automobile industry is increasingly vigorous, and the endurance mileage demand of users on electric vehicles is also gradually increased, so more and more electric vehicle manufacturers start focusing on high-power battery systems. Under the condition that the envelope space of the battery and the selection of the battery cells are the same, if the total electric quantity of the battery pack is required to be increased, more battery cell units are arranged, which also means that the available space of other parts inside the battery pack is smaller and smaller. Therefore, the purpose of reducing the installation space of the parts by optimizing the structure of the parts so as to reduce the assembly difficulty is a problem to be considered by many designers at present.

At present most power battery package all is equipped with water cooling system, and business turn over liquid mouth is the indispensable partly of water cooling system, and cooling medium flows in from the inlet, and the liquid outlet flows, absorbs the heat of taking away release when electric core charge-discharge through constantly flowing to guarantee that the electrical property is in good condition all the time. The liquid inlet and outlet in the current stage are basically of an integrated structure, the liquid inlet and outlet are of an integrated structure, the whole body is required to be placed into the mounting hole when the battery is packaged, the requirement of reserved mounting space is high, arrangement of other parts and arrangement of the battery core are not facilitated, and even the whole package of electric quantity is possibly reduced. The liquid inlet and outlet integrated structure is relatively difficult to maintain and disassemble after sale, parts influencing operation on the periphery inside the battery pack need to be disassembled first, then the liquid inlet and outlet are disassembled, the operation steps are complex, and the labor cost is relatively high.

Disclosure of Invention

In order to solve the technical problem described above or at least partially solve the technical problem described above, the present disclosure provides a battery pack and a vehicle.

A first aspect of the present disclosure provides a battery pack, including: the liquid cooling device comprises a box body, wherein a liquid cooling pipe is arranged in the box body, the end part of the liquid cooling pipe is connected with a first connecting piece, the first connecting piece is arranged in the box body, the first connecting piece is provided with a first channel, and the first channel is communicated with the liquid cooling pipe;

a second connecting piece is arranged outside the box body, the second connecting piece is provided with a boss, and the boss is provided with a second channel penetrating through the boss;

the box body is provided with a first through hole, the boss penetrates through the first through hole to be detachably connected with the first connecting piece, and the second channel is communicated with the first channel.

Furthermore, a first inserting portion is formed on the side wall of the boss, a second inserting portion is formed on the first channel, and the first inserting portion is inserted into the second inserting portion.

Furthermore, the first inserting part comprises a first groove arranged on the side wall of the boss, the first groove surrounds the side wall of the boss, and a first sealing element is arranged in the first groove.

Furthermore, along the extending direction of the second channel, the side wall of the boss is provided with a plurality of first grooves which are arranged at intervals.

Further, the first connecting piece comprises a first mounting surface, and the first mounting surface is abutted against the inner wall of the box body;

a second groove is formed in the first mounting surface, and a second sealing piece is arranged in the second groove.

Furthermore, a first mounting hole is formed in the first mounting surface, a second mounting hole corresponding to the first mounting hole is formed in the second connecting piece, a second through hole is formed in the box body, and a fastener penetrates through the second mounting hole and the second through hole and is fixedly connected with the first mounting hole.

Further, the first mounting hole is arranged on the outer side of the first channel, and the second groove is arranged on the outer sides of the first channel and the first mounting hole in a surrounding manner. Further, the number of the first mounting holes is at least two, and at least two of the first mounting holes are symmetrically arranged about the center of the first channel.

Further, the width W of the second groove satisfies: w is more than or equal to 3mm and less than or equal to 4 mm; the depth D of the second groove satisfies: d is more than or equal to 5mm and less than or equal to 8 mm.

The second aspect of the present disclosure provides a vehicle including the battery pack.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the battery pack provided by the embodiment of the disclosure comprises a box body, wherein a liquid cooling pipe is arranged in the box body, and the end part of the liquid cooling pipe is connected with a first connecting piece. The first connecting piece is arranged in the box body and is provided with a first channel communicated with the liquid cooling pipe, the second connecting piece is provided with a second channel, the two ends of the first channel are respectively communicated with the liquid cooling pipe and the second channel, the second channel can form a water inlet end or a water outlet end, a cooling medium flows in from the liquid inlet, the liquid outlet flows out, and heat released during charge and discharge of the battery core is taken away through continuous flow absorption of the cooling medium.

The box body is externally provided with a second connecting piece which is provided with a boss, and the boss is provided with a second channel penetrating through the boss. The box is equipped with first through-hole, and the boss passes first through-hole and can dismantle with first connecting piece and be connected and make second passageway and first passageway intercommunication. First connecting piece and second connecting piece can dismantle the connection, can improve the convenience of assembly, and the dismantlement process of no matter assembly or after-sale maintenance all becomes more simple and convenient promptly, is favorable to improving operating personnel work efficiency, reduces artifical use cost.

Because first connecting piece does not have convex link, the second connecting piece has the boss, the boss passes first through-hole and is connected with first connecting piece, the assembly space demand of liquid cooling pipe business turn over liquid mouth has been reduced to a certain extent, it is more nimble to make the battery package arrange and assemble, the convenience of assembly has been improved, can be still less occupy limited assembly space in the battery package, the space of saving can be used to other spare parts to arrange or electric core arrange, make the holistic space utilization of battery package more nimble, can make whole package electric quantity promote even organic.

The boss passes first through-hole and can dismantle with first connecting piece and be connected that occupation space is little when making the assembly, and the first connecting piece of components of a whole that can function independently assembly and the limited assembly space in the occupation battery package that the second connecting piece can still be less, and the residual space can be used to other spare parts to arrange or electric core arrange, makes the holistic space utilization of battery package more nimble, can make whole package electric quantity promote even organic.

The embodiment of the disclosure effectively solves the problems that the operation is complex, the occupied space is large and the arrangement of other parts is influenced in the installation process of the liquid inlet and outlet of the liquid cooling pipe, and simultaneously reduces the complexity and the manual use cost in the after-sale maintenance and disassembly process. Both possessed common liquid cooling pipe business turn over liquid mouthful all functions, reduced the assembly space demand of liquid cooling pipe business turn over liquid mouth again to a certain extent, made the battery package arrange with the assembly more nimble, improved the convenience of assembly, also made operating personnel work efficiency promote simultaneously, the cost of labor reduces.

Drawings

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

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a battery pack according to an embodiment of the present disclosure after assembly;

fig. 3 is a schematic cross-sectional structural view of a battery pack according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a first connecting member in a battery pack according to an embodiment of the disclosure;

fig. 5 is a schematic structural diagram of a second connecting member in a battery pack according to an embodiment of the disclosure.

Reference numerals: 1. a first connecting member; 11. a first channel; 12. a first mounting surface; 121. a second groove; 121a, a second seal; 122. a first mounting hole; 122a, a threaded sleeve; 2. a second connecting member; 21. a boss; 211. a first groove; 211a, a first seal; 22. a second channel; 23. a second mounting hole; 3. a liquid-cooled tube; 4. a box body; 41. a first through hole; 42. a second through hole; 5. a fastener; 6. and (6) a protective sleeve.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

The vehicle that this disclosed embodiment provided includes the battery package. The battery package is equipped with cooling system usually, and cooling system includes the cooling tube, and the cooling tube has inlet and liquid outlet, and coolant flows in from the inlet, and the liquid outlet flows out, absorbs the heat of taking away release when electric core charge-discharge through constantly flowing to guarantee that the electrical property is in good condition all the time. The business turn over liquid mouth in present stage all is a body structure basically, need wholly put into the mounting hole when battery pack is in the time of, it is great to reserve the installation space demand, is unfavorable for other spare parts to arrange and electric core arrange, probably leads to whole package electric quantity to reduce even to relative difficulty when the maintenance is dismantled, need tear the spare part that the inside periphery of battery package influences the operation earlier, dismantle business turn over liquid mouth again, operating procedure is comparatively complicated, the cost of labor is relatively high.

Based on this, this disclosure provides a battery package, has detachable business turn over liquid mouth.

Referring to fig. 1, 2, 3, 4 and 5, the battery pack includes a case 4, a liquid cooling pipe 3 is provided in the case 4, and a first connecting member 1 is connected to an end of the liquid cooling pipe 3. The liquid cooling pipe 3 and the first connecting piece 1 can be in interference fit. The optional first connecting piece 1 is inserted into the channel of the liquid cooling pipe 3 and fixed with the liquid cooling pipe 3. Optionally, the outside of first connecting piece 1 is equipped with the recess, is equipped with the sealing washer in the recess, and the leakproofness that first connecting piece 1 and liquid cooling pipe 3 are connected can be improved to the sealing washer. Optionally, the water inlet end and/or the water outlet end of the liquid cooling pipe 3 are/is connected with a first connecting piece 1. Optionally, one end of the first connecting piece 1, which is close to the liquid cooling pipe 3, is L-shaped, so that the space inside the battery pack can be saved, and the space utilization of the whole battery pack is more flexible.

First connecting piece 1 sets up in box 4, first connecting piece 1 has first passageway 11, first passageway 11 and liquid cooling pipe 3 intercommunication, second connecting piece 2 has second passageway 22, both ends through first passageway 11 communicate with liquid cooling pipe 3 and second passageway 22 respectively, make second passageway 22 can form into water end or play water end, cooling medium flows in from the end of intaking, goes out the water end and flows out, absorbs the heat of taking away the release when electric core charge-discharge through constantly flowing.

In some embodiments, the second connector 2 is disposed outside the case 4, the second connector 2 has a boss 21, and the boss 21 has a second channel 22 penetrating through the boss 21. Alternatively, the boss 21 penetrates the second connector 2 and is integrally formed with the second connector 2. Wherein the second connector 2 is plate-shaped, optionally with an oval outer contour, which facilitates the arrangement of corresponding parts thereon, the second connector 2 comprising a second mounting surface (not shown in the figures) abutting against an outer wall of the housing 4. The boss 21 protrudes from the second mounting surface.

The box body 4 is provided with a first through hole 41, and the boss 21 passes through the first through hole 41 to be detachably connected with the first connecting piece 1 and enable the second channel 22 to be communicated with the first channel 11. First connecting piece 1 and second connecting piece 2 can be dismantled the connection, can improve the convenience of assembly, probably need not open battery package box 4 during the maintenance, and simple easily operation no matter be the assembly promptly or the dismantlement process of after-sales maintenance all become more simple convenient, is favorable to improving operating personnel work efficiency, reduces artifical use cost.

Because first connecting piece 1 does not have convex link, second connecting piece 2 has boss 21, boss 21 passes first through-hole 41 and is connected with first connecting piece 1, the assembly space demand of 3 business turn over liquid mouths of liquid cooling pipe has been reduced to a certain extent, boss 21 is installed from the outside of box 4, the occupation space of this structure at the battery casing inner region has been reduced, it is more nimble to make the battery package arrange and assemble, the convenience of assembly has been improved, can be less occupy limited assembly space in the battery package, the residual space can be used to other spare parts to arrange or electric core arrange, make the holistic space utilization of battery package more nimble, can make whole package electric quantity promote even organic.

The boss 21 penetrates through the first through hole 41 to be detachably connected with the first connecting piece 1, so that the occupied space during assembly is small, the first connecting piece 1 and the second connecting piece 2 in split assembly can occupy less limited assembly space in the battery pack, and the residual space can be used for arrangement of other parts or arrangement of electric cores, so that the space utilization of the whole battery pack is more flexible, and even the whole battery pack electric quantity can be promoted organically.

The embodiment of the disclosure effectively solves the problems that the operation is complex, the occupied space is large and the arrangement of other parts is influenced in the installation process of the water inlet and outlet ends of the liquid cooling pipe 3, and simultaneously reduces the complexity and the manual use cost in the after-sale maintenance and disassembly process. Both possessed common liquid cooling pipe 3 and advanced all functions of water end, reduced the assembly space demand that liquid cooling pipe 3 advanced water end again to a certain extent, made the battery package arrange with assemble more nimble, improved the convenience of assembly, also made operating personnel work efficiency promote simultaneously, the cost of labor reduces.

As shown in fig. 3, 4 and 5, the first insertion portion is formed on the side wall of the boss 21, the second insertion portion is formed on the first channel 11, and the first insertion portion is inserted into the second insertion portion, so that the operation is simple.

Optionally, the second insertion part includes a socket, the boss 21 is matched with the socket, and the boss 21 is inserted into the socket and is in interference fit with the socket.

Optionally, the side wall of the boss 21 is formed with a first interference surface and the inner wall of the second passage 22 is formed with a second interference surface adapted to engage the first interference surface to establish an interference fit.

As shown in fig. 3 and 5, the first inserting portion includes a first groove 211 disposed on a side wall of the boss 21, the first groove 211 is disposed around the side wall of the boss 21, a first sealing member 211a is disposed in the first groove 211, the first sealing member 211a can be embedded into the first groove 211, and when the first inserting portion and the second inserting portion are inserted, the first sealing member 211a can be tightly attached to an inner wall of the first passage 11, so as to form a seal, and prevent a potential safety hazard caused by leakage of a cooling medium. The first sealing member 211a may be an O-ring, which is compressed by a force to seal the joint of the first connecting member 1 and the second connecting member 2.

The first sealing element 211a is arranged on the boss 21, so that the boss 21 and the first connecting piece 1 can be installed from the outside of the battery pack box body 4 during installation, the occupied space is small, the battery shell does not need to be opened during maintenance, the operation is simple and easy, and the maintenance cost can be reduced.

In some embodiments, the sidewall of the boss 21 is provided with a plurality of first grooves 211 along the extending direction of the second channel 22, and the plurality of first grooves 211 are spaced apart from each other, so that the sealing reliability can be improved. First recess 211 can set up one, two, three, four … …, all is equipped with first sealing member 211a in every first recess 211, and when first grafting portion and second grafting portion pegged graft, first sealing member 211a can closely laminate with the inner wall of first passageway 11 to form sealedly, thereby prevent the potential safety hazard that the coolant seepage caused.

As shown in fig. 3 and 4, the first connector 1 includes a first mounting surface 12, and the first mounting surface 12 abuts against an inner wall of the housing 4; the first mounting surface 12 is provided with a second groove 121, optionally, the second groove 121 is annular, and a second sealing element 121a is disposed in the second groove 121. The second sealing member 121a is compressed by a force to achieve the effect of sealing the battery pack case 4, thereby preventing water or dust and the like outside the battery pack case 4 from entering the battery pack case 4 from the connection between the first connecting member 1 and the case 4 to cause a potential safety hazard. Alternatively, the first connecting member 1 is plate-shaped, the outer contour of which is oval, which facilitates the arrangement of corresponding parts thereon, e.g. the second groove 121, the second seal 121a, etc. may be arranged.

The second sealing member 121a may be an O-ring, which is compressed by a force to seal the battery pack case 4.

In some embodiments, the width W of the second groove 121 satisfies: w is more than or equal to 3mm and less than or equal to 4 mm; the depth D of the second groove 121 satisfies: d is more than or equal to 5mm and less than or equal to 8mm, and the sealing reliability can be improved.

In this preferred embodiment, the width W of the second groove 121 may be 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm or 4 mm.

In this preferred embodiment, the depth D of the second groove 121 may be 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm or 8 mm.

Preferably, the width W of the second groove 121 is 3.5mm, and the depth D of the second groove 121 is 6.35 mm.

Referring to fig. 1 and 3, the first mounting surface 12 is provided with a first mounting hole 122, the second connecting member 2 is provided with a second mounting hole 23 corresponding to the first mounting hole 122, the case 4 is provided with a second through hole 42, and the fastening member 5 passes through the second mounting hole 23 and the second through hole 42 and is fixedly connected with the first mounting hole 122, so that the second connecting member 2, the battery pack case 4 and the first connecting member 1 are tightly attached to each other. Alternatively, the fastening member 3 may be a screw, and in this case, the first mounting hole 122 may be a threaded hole, and the screw is threaded into the first mounting hole 122 through the second mounting hole 23 and the second through hole 42. The first connecting piece 1 and the second connecting piece 2 are fixedly connected through the fastening piece 5 and sealed through the second sealing piece 121a, so that water or dust and the like outside the battery pack box body 4 can be prevented from entering the battery pack box body 4, and meanwhile, the risk of air tightness failure can be avoided. Fastener 5 is installed from the outside of battery package box 4, has reduced the occupation space of this structure at battery case inner zone, makes the battery package arrange and assemble more in a flexible way, has improved the convenience of assembly, can be less occupy limited assembly space in the battery package, and the residual space can be used to other spare parts to arrange or electric core arrange, makes the holistic space utilization of battery package more nimble, can make whole package electric quantity promote even organically. The battery pack box body 4 does not need to be opened during maintenance, the operation is simple and easy, namely the disassembly process of assembly or after-sale maintenance is simpler and more convenient, the improvement of the working efficiency of operators is facilitated, and the manual use cost is reduced.

In some embodiments, at least two first mounting holes 122 are provided, and at least two first mounting holes 122 are symmetrically provided about the center of the first channel 11, so that the reliability of the connection can be improved.

Optionally, two first mounting holes 122 are formed in the first mounting surface 12, the two first mounting holes 122 are symmetrically arranged on two sides of the first channel 11, the second connecting piece 2 is provided with two second mounting holes 23, the second mounting holes 23 correspond to the first mounting holes 122 one to one, the box body 4 is provided with two second through holes 42, the second through holes 42 correspond to the first mounting holes 122 and the second mounting holes 23 respectively, and the fastening piece 5 penetrates through the second mounting holes 23 and the second through holes 42 and is fixedly connected with the first mounting holes 122, so that the second connecting piece 2, the battery pack box body 4 and the first connecting piece 1 are tightly attached to each other.

Optionally, three first mounting holes 122 are formed in the first mounting surface 12, the three first mounting holes 122 are arranged in the first channel 11 in a centrosymmetric manner, the second connecting member 2 is provided with three second mounting holes 23, the second mounting holes 23 correspond to the first mounting holes 122 one to one, the box body 4 is provided with three second through holes 42, the second through holes 42 correspond to the first mounting holes 122 and the second mounting holes 23, and the fastening member 5 penetrates through the second mounting holes 23 and the second through holes 42 and is fixedly connected with the first mounting holes 122, so that the second connecting member 2, the battery pack box body 4 and the first connecting member 1 are tightly attached to each other.

In some specific embodiments, the first mounting hole 122 is disposed outside the first channel 11, and the second groove 121 surrounds the first channel 11 and the first mounting hole 122, so as to prevent water, dust, etc. outside the battery pack case 4 from entering the battery pack case 4 from the connection between the first connecting member 1 and the case 4.

As shown in fig. 4, the second groove 121 is disposed at the edge of the first connecting member 1, in the region surrounded by the second groove 121, and is located outside the first channel 11 and the first mounting hole 122, and the first connecting member 1 is provided with a plurality of lightening holes, so that the weight of the battery pack can be reduced, and the requirement of lightening the battery can be met.

As shown in fig. 1 and 5, a plurality of weight-reducing grooves are formed in the end surface of the second connecting member 2 close to the case 4, and the weight-reducing grooves are located outside the second mounting hole 23, so that the weight of the battery pack can be reduced, and the requirement of reducing the weight of the battery can be met. In some specific embodiments, a threaded sleeve 122a is arranged in the first mounting hole 122, and the fastener 5 is in threaded connection with the threaded sleeve 122a, so that the connection between the first connecting piece 1 and the second connecting piece 2 is more stable, and the connection reliability is improved.

In some embodiments, the end of the second passage 22 away from the first passage 11 is provided with a protective sleeve 6, and the threaded sleeve 122a is detachably connected to the second connector 2 to prevent foreign objects from entering the second passage 22 before assembly, and the battery can be removed after being packed in the vehicle.

The vehicle provided by the embodiment of the disclosure includes the battery pack according to any one of the above technical solutions, and the vehicle and the battery pack have the same advantages, and therefore, the details are not repeated herein.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A battery pack, comprising: the box body (4), a liquid cooling pipe (3) is arranged in the box body (4), the end part of the liquid cooling pipe (3) is connected with a first connecting piece (1), the first connecting piece (1) is arranged in the box body (4), the first connecting piece (1) is provided with a first channel (11), and the first channel (11) is communicated with the liquid cooling pipe (3);

a second connecting piece (2) is arranged outside the box body (4), the second connecting piece (2) is provided with a boss (21), and the boss (21) is provided with a second channel (22) penetrating through the boss (21);

the box body (4) is provided with a first through hole (41), the boss (21) penetrates through the first through hole (41) to be detachably connected with the first connecting piece (1), and the second channel (22) is communicated with the first channel (11).

2. The battery pack according to claim 1, wherein the side wall of the boss (21) is formed with a first insertion part, and the first channel (11) is formed with a second insertion part, the first insertion part being inserted with the second insertion part.

3. The battery pack according to claim 2, wherein the first insertion part comprises a first groove (211) provided in a side wall of the boss (21), the first groove (211) is provided around the side wall of the boss (21), and a first sealing member (211a) is provided in the first groove (211).

4. A battery pack according to claim 3, wherein the side wall of the boss (21) is provided with a plurality of the first grooves (211) in the extending direction of the second passage (22), and the plurality of the first grooves (211) are provided at intervals.

5. The battery pack according to any one of claims 1 to 4, wherein the first connector (1) includes a first mounting surface (12), the first mounting surface (12) abutting against an inner wall of the case (4);

a second groove (121) is formed in the first mounting surface (12), and a second sealing piece (121a) is arranged in the second groove (121).

6. The battery pack according to claim 5, wherein the first mounting surface (12) is provided with a first mounting hole (122), the second connecting member (2) is provided with a second mounting hole (23) corresponding to the first mounting hole (122), the case (4) is provided with a second through hole (42), and a fastener (5) passes through the second mounting hole (23) and the second through hole (42) and is fixedly connected with the first mounting hole (122).

7. The battery pack according to claim 6, wherein the first mounting hole (122) is provided outside the first channel (11), and the second groove (121) is provided around the outside of the first channel (11) and the first mounting hole (122).

8. The battery pack according to claim 7, wherein the first mounting holes (122) are provided in at least two, and at least two of the first mounting holes (122) are provided symmetrically with respect to the center of the first passage (11).

9. The battery pack according to claim 5, wherein the width W of the second groove (121) satisfies: w is more than or equal to 3mm and less than or equal to 4 mm; the depth D of the second groove (121) satisfies: d is more than or equal to 5mm and less than or equal to 8 mm.

10. A vehicle characterized by comprising the battery pack according to any one of claims 1 to 9.

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