Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle. The battery pack comprises a battery module, a liquid cooling assembly and a first protection part, the liquid cooling assembly comprises a plurality of liquid cooling plates distributed at intervals, at least one battery is arranged between every two adjacent liquid cooling plates, the liquid cooling assembly further comprises liquid cooling pipes communicated with the liquid cooling plates, and the liquid cooling pipes are located in the side direction of the battery module; the battery pack further comprises a first protection part, the first protection part comprises a first protection part and a second protection part, the first protection part is arranged on the upper side of the liquid cooling pipe, and the second protection part is arranged between the liquid cooling pipe and the battery module. The first protection part and the second protection part can respectively prevent high-temperature gas and electrolyte impurities from impacting the liquid cooling pipe on the upper side of the liquid cooling pipe and one side, facing the battery module, of the liquid cooling pipe, so that the damage probability of the liquid cooling pipe can be effectively reduced; in addition, protection can be carried out after the first protection part is assembled, and compared with a mode of coating the liquid cooling pipe with a protection material, the operation can be simplified, and the labor cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a battery pack and vehicle. BACKGROUND

[0002] The power battery pack or energy storage battery box usually needs to install the liquid cooling plate on the side or bottom surface of the battery pack. When the side surface installation liquid cooling plate scheme is adopted, a large number of liquid cooling pipes need to be arranged on the side surface of the battery pack, and the liquid cooling plates are connected in series through the liquid cooling pipes. The liquid cooling pipes arranged on the side surface of the battery pack are usually made of plastic material, when the battery pack is out of control, a large amount of high-temperature gas or electrolyte impurities may be sprayed from the out-of-control battery cell, and the high-temperature gas or electrolyte impurities may impact the plastic liquid cooling pipe to cause damage to the liquid cooling pipe, thereby causing secondary hazards such as liquid leakage and short circuit. In the related art, a high-temperature protective material is usually coated on the surface of the liquid cooling pipe. Since the number of liquid cooling pipes is large, and the coating operation of the liquid cooling pipe is not convenient, there are problems of complicated operation and high labor cost. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery pack, which can simplify the protection operation of the liquid cooling pipe and reduce the labor cost.

[0004] The utility model further provides a vehicle applying the battery pack.

[0005] According to the battery pack in the first aspect of the utility model embodiment, the battery pack comprises:

[0006] The battery module comprises a plurality of batteries arranged side by side, and each battery is provided with an explosion-proof valve on the top;

[0007] The liquid cooling assembly comprises a plurality of liquid cooling plates arranged at intervals, at least one battery is arranged between adjacent liquid cooling plates, the liquid cooling assembly further comprises a liquid cooling pipe in communication with each liquid cooling plate, and the liquid cooling pipe is located on the lateral side of the battery module.

[0008] The battery pack further comprises a first protective member, the first protective member comprises a first protective part and a second protective part, the first protective part is arranged on the upper side of the liquid cooling pipe, and the second protective part is arranged between the liquid cooling pipe and the battery module.

[0009] In other embodiments of the utility model, the second protective part is provided with a relief groove, the end portion of the liquid cooling plate extends out of the battery module and is arranged in the relief groove, and the end portion of the liquid cooling plate is in communication with the liquid cooling pipe on the side of the second protective part away from the battery module.

[0010] The battery pack according to the utility model embodiment has at least the following beneficial effects:

[0011] The first protection piece comprises a first protection part and a second protection part, when the battery is in thermal runaway, the first protection part can block the high-temperature gas and electrolyte impurities from impacting the liquid cooling pipe on the upper side of the liquid cooling pipe, and the second protection part can block the high-temperature gas and electrolyte impurities from impacting the liquid cooling pipe on the side of the liquid cooling pipe facing the battery module, so that the probability of damage of the liquid cooling pipe can be effectively reduced; in addition, the protection can be carried out after the first protection piece is assembled, compared with the way of coating the protection material on the liquid cooling pipe, the operation can be simplified, and the labor cost can be reduced.

[0012] In other embodiments of the present application, the first protection part is connected to the top of the second protection part, and the avoiding groove penetrates to the bottom of the second protection part.

[0013] In other embodiments of the present application, the first protection piece further comprises a buckle structure connected to the first protection part and / or the second protection part, the buckle structure defines a containing space and an opening communicating with the containing space, and the liquid cooling pipe is contained in the containing space.

[0014] In other embodiments of the present application, the first protection piece further comprises a buckle structure connected to the first protection part and / or the second protection part, the buckle structure defines a containing space and an opening communicating with the containing space, and the liquid cooling pipe is contained in the containing space, and the opening is located on the side of the buckle structure facing the bottom of the second protection part.

[0015] In other embodiments of the present application, the buckle structure comprises a first buckle part and a second buckle part connected to the first protection part respectively, the second buckle part is arranged on the side of the first buckle part away from the battery module, and the first buckle part and the second buckle part jointly define the containing space and the opening.

[0016] The buckle structure further comprises a first guide-in part, the first guide-in part is connected to the first buckle part and the second protection part respectively, and the distance between the first guide-in part and the second protection part gradually increases in the direction of the liquid cooling pipe entering the containing space, so that the first guide-in part is suitable for guiding the liquid cooling pipe into the containing space.

[0017] And / or, the first protection piece further comprises an elastic buffer arranged in the containing space, and the elastic buffer abuts against the liquid cooling pipe.

[0018] In other embodiments of the present application, the battery pack further comprises a tray and a structural adhesive, the battery module is connected to the tray through the structural adhesive, and the bottom of the second protection part is inserted into the structural adhesive.

[0019] In other embodiments of the utility model, the battery pack further includes a cover plate, the cover plate is connected to the tray, and the cover plate and the tray jointly define a mounting cavity, and the battery module and the liquid cooling assembly are both located in the mounting cavity.

[0020] In other embodiments of the utility model, the first protective piece further includes a protruding portion, the protruding portion is arranged on a side of the second protective portion facing the battery module, and the side of the protruding portion facing the battery module has a curved surface;

[0021] And / or, the first protective piece is made of plastic, and the battery pack further includes a second protective piece, the second protective piece includes a third protective portion and a fourth protective portion, the third protective portion is arranged on the upper side of the first protective portion, and the fourth protective portion is arranged on a side of the second protective portion facing the battery module.

[0022] According to the vehicle of the second utility model embodiment of the utility model, the battery pack is included.

[0023] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be known by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further described below in combination with the drawings and embodiments, wherein:

[0025] Figure 1 It is the three-dimensional schematic view of battery pack in the embodiment of the utility model;

[0026] Figure 2 It is Figure 1 It is the exploded schematic view of battery pack in the embodiment of the utility model;

[0027] Figure 3 It is Figure 1 It is the three-dimensional schematic view of battery pack showing the position relation of liquid cooling pipe, first protective piece and battery module in the embodiment of the utility model;

[0028] Figure 4 It is Figure 1 It is the three-dimensional schematic view of first protective piece in the embodiment of the utility model;

[0029] Figure 5 It is Figure 4 It is the side view of first protective piece in the embodiment of the utility model;

[0030] Figure 6 It is Figure 1 It is the exploded schematic view of first protective piece and second protective piece in the embodiment of the utility model.

[0031] Reference signs:

[0032] Battery pack 10;

[0033] Battery module 100, battery 110, battery housing 111, cover 112;

[0034] Liquid cooling assembly 200, liquid cooling plate 210, liquid cooling pipe 220;

[0035] First protection piece 300, first protection part 310, second protection part 320, avoiding groove 321, buckle structure 330, first buckle part 331, second buckle part 332, containing space 333, opening 334, first guide-in part 335, second guide-in part 336, elastic buffer piece 340, protruding part 350, arc surface 351;

[0036] Tray 400;

[0037] Structural adhesive 500;

[0038] Second protection piece 600, third protection part 610, fourth protection part 620. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0040] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0041] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used to distinguish technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0042] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0043] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] As described previously, in the related art, the liquid cooling pipe is protected by coating a high-temperature protective material on the surface of the liquid cooling pipe, which has the problems of complicated operation and high labor cost. Based on this, the utility model provides a battery pack, which can protect the liquid cooling pipe through the first protective piece, simplify the operation and reduce the labor cost.

[0045] Reference Figure 1 With Figure 2 , both show the three-dimensional schematic diagram and the exploded schematic diagram of the battery pack 10 in the embodiment of the utility model, and the cover plate of the battery pack 10 is hidden in the figure, as shown in the figure, the battery pack 10 includes a battery module 100 and a liquid cooling assembly 200, the liquid cooling assembly 200 is used for cooling the battery module 100 to control the temperature of the battery module 100 when working, and avoid the heat runaway caused by the temperature being too high.

[0046] Specifically, the battery module 100 includes a plurality of batteries 110 arranged side by side, for example, the plurality of batteries 110 are divided into two groups along the left-right direction, and the batteries 110 in each group are distributed along the front-rear direction. The top of each battery 110 is provided with an explosion-proof valve, when the heat runaway occurs inside the battery 110, the high-temperature gas and electrolyte impurities can be sprayed out from the explosion-proof valve, to avoid the explosion caused by the excessive pressure inside the battery 110. As a typical battery structure, it specifically includes a battery shell 111, a cover 112 and a battery cell, for example, a rectangular battery, the battery shell 111 is usually arranged as a rectangular shell with one end opening, the cover 112 is connected to the opening end of the battery shell 111 by welding or the like, thereby defining an inner cavity together with the battery shell 111, the battery cell is arranged in the inner cavity, and the cover 112 is provided with an explosion-proof valve. In some embodiments, the cover 112 is also provided with a pole, one end of the pole is located in the inner cavity and connected with the tab of the battery cell, and the other end is exposed outside the battery for realizing the electrical connection between the battery cell and the external electrical device. Specifically, the pole includes a positive pole and a negative pole, the positive pole is connected with the positive tab of the battery cell, and the negative pole is connected with the negative tab of the battery cell.

[0047] The liquid cooling assembly 200 comprises a plurality of spaced liquid cooling plates 210, at least one battery 110 is arranged between adjacent liquid cooling plates 210, for example, two batteries 110 are arranged between adjacent liquid cooling plates 210, that is, one side of the battery 110 is attached to the liquid cooling plate 210, and the other side is attached to the adjacent battery 110. In this way, the battery 110 can be fully cooled, and the number of liquid cooling plates 210 can be reduced. In addition, the liquid cooling assembly 200 further comprises a liquid cooling pipe 220 in communication with each liquid cooling plate 210. The liquid cooling pipe 220 is located on the side of the battery module 100, so that the liquid cooling pipe 220 can be in communication with the liquid cooling plate 210. Figure 1 As shown, the left and right sides of the battery module 100 are provided with liquid cooling pipes 220. The liquid cooling pipe 220 can be directly communicated with the liquid cooling plate 210, or can be communicated with the liquid cooling pipe 220 through a branch pipe perpendicular to the liquid cooling pipe 220. The liquid cooling pipe 220 specifically comprises an inlet pipe and an outlet pipe. The inlet pipe is used to supply cooling liquid to the flow channel in the liquid cooling plate 210. The cooling liquid in the liquid cooling plate 210 flows out through the outlet pipe, thereby ensuring the continuous cooling capacity of the liquid cooling plate 210. For example, the same liquid cooling pipe 220 is in communication with the same side of each liquid cooling plate 210, that is, each liquid cooling plate 210 is arranged in parallel. As shown, the length of the liquid cooling pipe 220 is relatively long. If the surface is coated with high-temperature protective material for protection, the workload is relatively large, especially when the liquid cooling pipe 220 is connected by a plurality of sub-pipes through pipe joints. In addition, segmented coating is required, which will further increase the workload.

[0048] Based on the above problems, with reference to Figure 3 、 Figure 4 The battery pack 10 of the embodiment further comprises a first protective member 300. The first protective member 300 comprises a first protective part 310 and a second protective part 320. The first protective part 310 is arranged on the upper side of the liquid cooling pipe 220, and the second protective part 320 is arranged between the liquid cooling pipe 220 and the battery module 100. In this way, when the battery 110 is in thermal runaway, the first protective part 310 can block the high-temperature gas and electrolyte impurities from impacting the liquid cooling pipe 220 on the upper side of the liquid cooling pipe 220, and the second protective part 320 can block the high-temperature gas and electrolyte impurities from impacting the liquid cooling pipe 220 on the side of the liquid cooling pipe 220 facing the battery module 100, thereby protecting at least in the two directions most susceptible to impact, effectively reducing the probability of damage to the liquid cooling pipe 220; in addition, in the embodiment, the first protective member 300 can be protected after assembly, compared with the method of coating the protective material on the liquid cooling pipe 220, the operation can be simplified, and the labor cost can be reduced.

[0049] In some more specific embodiments, the first guard part 310 satisfies the following settings: the projection of the first guard part 310 on a horizontal plane covers the projection of the liquid cooling pipe 220, so that the first guard part 310 can completely shield the liquid cooling pipe 220; it can be understood that the first guard part 310 can also partially shield the liquid cooling pipe 220, thereby playing a certain protective role. The second guard part 320 satisfies the following settings: in a vertical plane parallel to the liquid cooling pipe 220, the projection of the second guard part 320 covers the projection of the liquid cooling pipe 220, so that the second guard part 320 can completely shield the liquid cooling pipe 220; it can be understood that the second guard part 320 can also partially shield the liquid cooling pipe 220, thereby playing a certain protective role.

[0050] On the basis of the foregoing embodiments, in some embodiments of the utility model, with reference to Figure 4 、 Figure 5 , the first guard part 310 further comprises a buckle structure 330, the buckle structure 330 defines a containing space 333 and an opening 334 in communication with the containing space 333, the size of the opening 334 is smaller than the outer diameter of the liquid cooling pipe 220, and the buckle structure 330 can be elastically deformed, when assembling the first guard part 300, the liquid cooling pipe 220 abuts against the buckle structure 330 to open the opening 334, when the liquid cooling pipe 220 passes through the opening 334 and is contained in the containing space 333, the buckle structure 330 resets to keep the liquid cooling pipe 220 in the containing space 333. The buckle structure 330 can be connected to the first guard part 310 entirely, or connected to the second guard part 320 entirely, or connected to the first guard part 310 partially and connected to the second guard part 320 partially as shown in Figure 5 .

[0051] When the first guard part 300 further comprises the buckle structure 330, with reference to Figure 5 , the buckle structure 330 comprises a first buckle part 331 and a second buckle part 332 connected to the first guard part 310 respectively, the second buckle part 332 is arranged on the side of the first buckle part 331 away from the battery module 100, the first buckle part 331 and the second buckle part 332 jointly define the containing space 333 and the opening 334, for example, the upper ends of the first buckle part 331 and the second buckle part 332 are connected to the first guard part 310, and both can elastically move to separate or approach each other, thereby expanding or reducing the opening 334. The main body structure of the first buckle part 331 and the second buckle part 332 is arranged in a circular arc shape, so as to define a substantially circular containing space 333, and facilitate elastic movement.

[0052] In some specific embodiments, the snap-fit ​​structure 330 further includes a first guide portion 335, which is connected to both the first snap-fit ​​portion 331 and the second protective portion 320. For example, the upper end of the first guide portion 335 is connected to the lower end of the first snap-fit ​​portion 331, and the lower end is connected to the second protective portion 320. Along the direction in which the liquid cooling pipe 220 enters the receiving space 333, the distance between the first guide portion 335 and the second protective portion 320 gradually increases. For instance, the first guide portion 335 may be inclined to facilitate the introduction of the liquid cooling pipe 220 into the receiving space 333. Furthermore, the first guide portion 335, connected to the first snap-fit ​​portion 331, can also increase the strength of the first snap-fit ​​portion 331, thereby increasing the snap-fit ​​structure 330's ability to retain the liquid cooling pipe 220.

[0053] In some other embodiments, the snap-fit ​​structure 330 further includes a second guide portion 336, which is connected to the second snap-fit ​​portion 332. For example, the upper end of the second guide portion 336 is connected to the lower end of the second snap-fit ​​portion 332, with the lower end serving as a free end. Along the direction in which the liquid cooling pipe 220 enters the receiving space 333, the distance between the second guide portion 336 and the second protective portion 320 gradually decreases. For example, the second guide portion 336 is inclined, thereby cooperating with the first guide portion 335 to guide the liquid cooling pipe 220 into the receiving space 333.

[0054] In some other specific embodiments, the first protective member 300 further includes an elastic buffer member 340 disposed in the receiving space 333. The elastic buffer member 340 abuts against the liquid cooling pipe 220, thereby reducing the noise generated by the collision between the liquid cooling pipe 220 and the snap-fit ​​structure 330. For example, the elastic buffer member 340 is connected to the inner wall of the first protective part 310 and faces the opening 334. The elastic buffer member 340 can be made of flexible materials such as foam.

[0055] Based on the foregoing embodiments, in some embodiments of this utility model, reference is made to... Figures 1 to 3 The second protective part 320 is provided with a clearance groove 321. The end of the liquid cooling plate 210 extends beyond the battery module 100 and passes through the clearance groove 321. The end of the liquid cooling plate 210 is connected to the liquid cooling pipe 220 on the side of the second protective part 320 opposite to the battery module 100, so as to... Figure 1As shown, the avoiding groove 321 is provided as a strip-shaped groove, the left end of the liquid cooling plate 210 extends out of the battery module 100 and is arranged in the avoiding groove 321, the left end of each liquid cooling plate 210 is communicated with the liquid cooling pipe 220 on the left side of the second protection part 320, in this way, whether the liquid cooling pipe 220 as the main pipeline or each branch pipe as the connecting pipeline can be protected by the first protection part 300. Among them, the shape of the avoiding groove 321 is matched with the end of the liquid cooling plate 210, the width of the groove is equal to or slightly larger than the maximum thickness of the end, which can facilitate the assembly of the liquid cooling plate 210 and the first protection part 300, and can also reduce the gap.

[0056] It should be noted that when the height of the liquid cooling plate 210 is greater than the height of the second protection part 320, as Figure 1 , Figure 4 , the first protection part 310 is also provided with an avoiding groove (for the convenience of distinguishing, the avoiding groove on the first protection part 310 is named as the first avoiding groove, and the avoiding groove 321 on the second protection part 320 is named as the second avoiding groove), one end of the first avoiding groove is communicated with the second avoiding groove, and the other end extends in the direction away from the battery module 100, when the first protection part 300 is assembled, the liquid cooling plate 210 is arranged in the first avoiding groove and the second avoiding groove. When the height of the liquid cooling plate 210 is less than the height of the second protection part 320, the strip-shaped avoiding groove 321 can also be arranged on the second protection part 320.

[0057] In other embodiments, when the liquid cooling pipe 220 is communicated with the liquid cooling plate 210 through the branch pipe, the branch pipe can also be arranged in the avoiding groove 321, that is, the end of the liquid cooling plate 210 and the communication part of the liquid cooling pipe 220 are located on the side of the second protection part 320 facing the battery module 100, at this time, the avoiding groove can be a circular groove matched with the shape of the branch pipe.

[0058] When the second protection part 320 is provided with the avoiding groove 321, in some embodiments of the utility model, referring to Figure 4 , the first protection part 310 is connected to the top of the second protection part 320, and the avoiding groove 321 penetrates to the bottom of the second protection part 320, in this way, the first protection part 300 can be assembled in the following way: after the liquid cooling pipe 220 and the liquid cooling plate 210 are assembled, the avoiding grooves 321 of the first protection part 300 are aligned with the corresponding ends of the liquid cooling pipe 220 from above, then the first protection part 300 is driven to move from top to bottom, so that the liquid cooling pipe 220 is inserted into the corresponding avoiding groove 321, and then the first protection part 310 is located on the top of the liquid cooling pipe 220, and the second protection part 320 is located between the liquid cooling pipe 220 and the battery module 100, thereby the assembly operation of the first protection part 300 can be simplified.

[0059] In some more specific embodiments, when the communication position of the liquid cooling pipe 220 with the liquid cooling plate 210 is lower than the top end of the liquid cooling plate 210 (for example, located in the middle of the height direction of the liquid cooling plate 210), and the height of the liquid cooling plate 210 is greater than the height of the second protection part 320, the first protection part 310 is provided with the first avoiding slot as described above, and when the first protection part 300 is assembled in a top-down manner, the end of the liquid cooling plate 210 will pass through the second avoiding slot and the first avoiding slot in turn, so that the first protection part 310 can be closer to the liquid cooling pipe 220 for protection, and at the same time, the space occupied by the first protection part 300 can be reduced, Figure 1 The above is an example.

[0060] It should be noted that when the height of the liquid cooling plate 210 is less than the height of the second protection part 320, only the avoiding slot 321 which is strip-shaped and has a through lower end can be arranged on the second protection part 320, so that no matter where the liquid cooling pipe 220 is connected to the liquid cooling plate 210 in the height direction, the first protection part 300 can be assembled in a top-down manner.

[0061] When the second protection part 320 is provided with the avoiding slot 321 which penetrates to the bottom of the second protection part 320, in some embodiments of the utility model, referring to Figure 4 , Figure 5 The first protection part 300 further comprises a buckle structure 330, and the buckle structure 330 can be understood with reference to the foregoing embodiments.

[0062] In the embodiment, the opening 334 is located on the side of the buckle structure 330 which faces the bottom of the second protection part 320, and for example, the opening 334 is arranged at the bottom of the buckle structure 330, that is, the direction of the opening 334 is the same as the penetration direction of the avoiding slot 321, so that when the first protection part 300 is assembled in a top-down manner, the liquid cooling pipe 220 can also enter the accommodating space 333 through the opening 334 in this process to realize clamping, and the operation of the assembly personnel can be further simplified.

[0063] On the basis of the foregoing embodiments, in some embodiments of the utility model, referring to Figures 1 to 3 The battery pack 10 further comprises a tray 400 and a structural adhesive 500, and the battery module 100 is connected to the tray 400 through the structural adhesive 500 to avoid movement of the battery module 100 relative to the tray 400, and for example, the tray 400 comprises a bottom plate and a side plate connected to the edge of the bottom plate, the battery module 100 is supported by the bottom plate, and the structural adhesive is arranged between the bottom of the battery module 100 and the bottom plate.

[0064] In this embodiment, the bottom of the second protective part 320 is inserted into the structural adhesive 500 to fix the first protective part 300. It should be noted that the first protective part 300 can be fixed by either the structural adhesive 500 or the snap-fit ​​structure 330, or by a combination of both. For example, when the battery module 100 is assembled onto the tray 400 and the liquid cooling pipe 220 is assembled onto the liquid cooling plate 210, the first protective part 300 is driven to move from top to bottom until the liquid cooling pipe 220 is inserted into the receiving space 333 of the snap-fit ​​structure 330, and the second protective part 320 is inserted into the uncured structural adhesive 500. Then the structural adhesive 500 is cured. Once the structural adhesive 500 is cured, the first protective part 300 is completely fixed.

[0065] When the battery pack 10 also includes a tray 400, in some embodiments of the present invention, the battery pack 10 also includes a cover plate, which is connected to the tray 400 and together with the tray 400 defines a mounting cavity. The battery module 100 and the liquid cooling assembly 200 are both located in the mounting cavity, that is, the liquid cooling pipe 220 is located in the mounting cavity. In this way, the battery pack housing formed by the cover plate and the tray 400 can protect the liquid cooling plate 210 on the side of the liquid cooling pipe 220 facing away from the battery module 100.

[0066] Based on the foregoing embodiments, in some embodiments of this utility model, reference is made to... Figure 5 The first protective member 300 also includes a protrusion 350, which is disposed on the side of the second protective member 320 facing the battery module 100. The side of the protrusion 350 facing the battery module 100 has an arc surface 351. Thus, when assembling the first protective member 300, the edge of the second protective member 320 can be prevented from scratching the battery 110. For example, the protrusion 350 is disposed at the bottom of the second protective member 320. When the first protective member 300 is assembled in a top-to-bottom manner, the protrusion 350 can first contact the surface of the battery 110.

[0067] Based on the foregoing embodiments, in some embodiments of this utility model, reference is made to... Figure 6The first protection member 300 is made of plastic as a whole, so that structures such as the buckle structure 330 and the protruding portion 350 can be formed. The battery pack 10 of the embodiment can also be provided with a second protection member 600, which can be made of a material that can withstand a higher temperature relative to plastic. Specifically, the second protection member 600 includes a third protection portion 610 and a fourth protection portion 620. The third protection portion 610 is arranged on the upper side of the first protection portion 310, for example, is bonded to the upper surface of the first protection portion 310. The fourth protection portion 620 is arranged on the side of the second protection portion 320 facing the battery module 100, for example, is bonded to the surface of the second protection portion 320 facing the battery module 100. In the embodiment, the first protection member 300 made of plastic forms relevant functional structures, and the second protection member 600 made of a high-temperature-resistant material increases the protection function, which can reduce the difficulty of forming the structure and meet the protection requirements.

[0068] It should be noted that the third protection portion 610 and the fourth protection portion 620 can be a split structure or can be connected as an integral structure.

[0069] The second aspect of the utility model further provides a vehicle, wherein the vehicle can be a private car, such as a sedan, an SUV, an MPV or a pickup truck. The vehicle can also be an operating vehicle, such as a van, a bus, a small truck or a large trailer. The vehicle can be a gasoline car or a new energy car. When the vehicle is a new energy car, it can be a hybrid car or a pure electric car. In the embodiment, the vehicle includes the battery pack 10 in the above embodiments.

[0070] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A battery pack, characterized by, The battery pack comprises: a battery module comprising a plurality of batteries arranged side by side, each of the batteries being provided with an explosion-proof valve at a top portion thereof; a liquid cooling assembly comprising a plurality of liquid cooling plates arranged at intervals, at least one of the batteries being arranged between adjacent liquid cooling plates, the liquid cooling assembly further comprising a liquid cooling pipe in communication with each of the liquid cooling plates, the liquid cooling pipe being located at a lateral side of the battery module; wherein the battery pack further comprises a first protective member, the first protective member comprising a first protective portion and a second protective portion, the first protective portion being arranged at an upper side of the liquid cooling pipe, and the second protective portion being arranged between the liquid cooling pipe and the battery module.

2. The battery pack of claim 1, wherein, The second protective portion is provided with a relief groove, an end portion of the liquid cooling plate extending out of the battery module and being arranged in the relief groove, the end portion of the liquid cooling plate being in communication with the liquid cooling pipe at a side of the second protective portion facing away from the battery module.

3. The battery pack of claim 2, wherein, The first protective portion is connected to a top portion of the second protective portion, and the relief groove extends at least to a bottom portion of the second protective portion.

4. The battery pack of claim 3, wherein, The first protective member further comprises a buckle structure connected to the first protective portion and / or the second protective portion, the buckle structure defining a receiving space and an opening in communication with the receiving space, the liquid cooling pipe being received in the receiving space, and the opening being located at a side of the buckle structure facing the bottom portion of the second protective portion.

5. The battery pack of claim 1, wherein, The first protective member further comprises a buckle structure connected to the first protective portion and / or the second protective portion, the buckle structure defining a receiving space and an opening in communication with the receiving space, the liquid cooling pipe being received in the receiving space.

6. The battery pack of claim 5, wherein, The buckle structure comprises a first buckle portion and a second buckle portion connected to the first protective portion respectively, the second buckle portion being arranged at a side of the first buckle portion facing away from the battery module, the first buckle portion and the second buckle portion jointly defining the receiving space and the opening; wherein the buckle structure further comprises a first guide portion, the first guide portion being connected to the first buckle portion and the second protective portion respectively, and the distance between the first guide portion and the second protective portion gradually increasing in a direction in which the liquid cooling pipe enters the receiving space, so that the first guide portion is adapted to guide the liquid cooling pipe into the receiving space; and / or, the first protective member further comprises an elastic buffer arranged in the receiving space, the elastic buffer being in abutment with the liquid cooling pipe.

7. The battery pack of claim 1, wherein, The battery pack further comprises a tray and a structural adhesive, the battery module being connected to the tray through the structural adhesive, and the bottom portion of the second protective portion being inserted into the structural adhesive.

8. The battery pack of claim 7, wherein, The battery pack further comprises a cover plate, the cover plate being connected to the tray and jointly defining a mounting cavity with the tray, the battery module and the liquid cooling assembly being located in the mounting cavity.

9. The battery pack of claim 1, wherein, The first protective member further comprises a protruding portion, the protruding portion being arranged at a side of the second protective portion facing the battery module, and the side of the protruding portion facing the battery module having a curved surface. And / or, the first protection piece is made of plastic, and the battery pack further includes a second protection piece, the second protection piece includes a third protection part and a fourth protection part, the third protection part is arranged on the upper side of the first protection part, and the fourth protection part is arranged on the side of the second protection part facing the battery module.

10. Vehicle, characterized in that The battery pack of any one of claims 1 to 9. The battery pack of any one of claims 1 to 9.

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