Battery pack and battery pack

Abstract

The utility model provides a battery pack and a battery pack. The battery pack comprises a battery column, and the battery column comprises a plurality of batteries which are arranged in sequence; the cooling assembly is arranged above the battery; the sampling assembly is arranged above the cooling assembly, the cooling assembly is provided with an avoiding channel, the sampling assembly and / or the battery are / is partially arranged in the avoiding channel in a penetrating mode, and the sampling assembly and the battery are in contact conduction through the avoiding channel. The utility model solves the problem of low utilization rate of longitudinal space of the battery pack in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, specifically, relate to a battery pack and battery package. BACKGROUND

[0002] Due to the increasing requirement of battery package energy density, the space utilization of battery package is also put forward higher requirement. Because the busbar in sampling assembly carries huge current and the temperature of busbar rises sharply when battery package is charging, especially in fast charging, which leads to the overall temperature of battery package rising, so the cooling assembly is arranged on the side of sampling assembly away from the battery in the existing battery package to cool the busbar. The arrangement of the cooling assembly occupies the longitudinal space of the battery package, which leads to the low space utilization of the battery package in the longitudinal direction, and thus the utilization and energy density of the whole battery package are low. SUMMARY

[0003] The main purpose of the utility model is to provide a battery pack and battery package to solve the problem of low longitudinal space utilization of battery package in the prior art.

[0004] In order to achieve the above purpose, according to one aspect of the utility model, a battery pack is provided, which comprises: a battery column, the battery column comprising a plurality of batteries arranged in sequence; a cooling assembly arranged above the batteries; a sampling assembly arranged above the cooling assembly, the cooling assembly having an avoiding passage, the sampling assembly and / or the batteries being partially arranged in the avoiding passage, and the sampling assembly and the batteries being in contact through the avoiding passage.

[0005] Further, the cooling assembly comprises a plurality of harmonicas, the harmonicas being arranged in communication with each other, and each of the harmonicas being arranged in sequence and spaced apart along the arrangement direction of the batteries, so as to form the avoiding passage.

[0006] Further, the plurality of harmonicas are arranged in groups, and comprise a first harmonica group and a second harmonica group, and the cooling assembly further comprises: a liquid inlet pipeline, one end of the first harmonica group being connected in communication with the liquid inlet pipeline; a liquid outlet pipeline, the other end of the first harmonica group and one end of the second harmonica group being connected in communication with the liquid outlet pipeline; and the other end of the second harmonica group being connected in communication with the liquid outlet pipeline.

[0007] Further, the liquid inlet pipeline comprises a liquid inlet pipe and a liquid inlet manifold, the liquid inlet pipe being connected with the liquid inlet manifold, each of the harmonicas of the first harmonica group being in communication with the liquid inlet manifold, and the cooling medium in the liquid inlet pipe being shunted to each of the harmonicas of the first harmonica group through the liquid inlet manifold; and / or the liquid outlet pipeline comprises a liquid outlet pipe and a liquid outlet manifold, the liquid outlet pipe being connected with the liquid outlet manifold, each of the harmonicas of the second harmonica group being in communication with the liquid outlet manifold, and the cooling medium in each of the harmonicas of the second harmonica group being shunted to the liquid outlet pipe through the liquid outlet manifold.

[0008] Further, the cooling assembly further comprises a heat conduction member, the heat conduction member is arranged between the mouthpiece tube and the battery and / or between the mouthpiece tube and the sampling assembly.

[0009] Further, the heat conduction member is an insulating member.

[0010] Further, the sampling assembly comprises: an isolation plate, the isolation plate is arranged above the cooling assembly, the isolation plate has an avoiding hole penetrating from top to bottom, the avoiding hole is communicated with the avoiding channel; a busbar, the busbar is arranged above the isolation plate, at least a part of the busbar is arranged at the avoiding hole, the electrode terminal of the battery passes through the avoiding channel and the avoiding hole and is in contact with the busbar; a circuit board, the circuit board is arranged above the isolation plate and is in contact with the busbar.

[0011] Further, the isolation plate has a heat conduction groove penetratingly arranged, at least a part of the busbar is located at the heat conduction groove, at least a part of the cooling assembly is embedded in the heat conduction groove and is in contact with the busbar for heat conduction.

[0012] Further, the busbar has a recess, the recess is recessed away from the isolation plate, the recess is communicated with the heat conduction groove, and the cooling assembly is partially accommodated in the recess and is in contact with the inner surface of the recess for heat conduction.

[0013] According to another aspect of the present application, a battery pack is provided, comprising a box body and the above-mentioned battery pack, and the battery pack is arranged in the box body.

[0014] According to the technical scheme of the present application, by arranging the cooling assembly, and the assembling form of the battery, the cooling assembly and the sampling assembly is as a whole: the cooling assembly is arranged above the battery, the sampling assembly is arranged above the cooling assembly, forming a cooperation arrangement mode of the sampling assembly, the cooling assembly and the battery stacked one by one from top to bottom, the cooling assembly is arranged in the space between the sampling assembly and the battery, which can save the longitudinal space occupied by the cooling assembly, through the above-mentioned mode, on the one hand, the longitudinal space of the battery pack is effectively utilized, realizing the effect of increasing the longitudinal utilization rate, and then realizing the weight reduction and cost reduction of the battery pack, improving the utilization rate and energy density of the whole pack, on the other hand, the cooling assembly can play a role in cooling and heat dissipation, realizing the cooling of the sampling assembly and the battery. Considering the conductive cooperation between the sampling assembly and the battery, the avoiding channel is arranged on the cooling assembly in the embodiment, and the battery and the sampling assembly can be arranged in the avoiding channel, so that the sampling assembly and the battery can be in contact through the avoiding channel. Through the arrangement mode, on the one hand, the cooling assembly can cool the battery and the sampling assembly at the same time; on the other hand, the battery, the cooling assembly and the sampling assembly are stacked one by one, which can save the space required by the thickness of the cooling assembly and improve the utilization rate of the longitudinal space of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification of the present application serve to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 A structural schematic diagram of a battery pack of the present application is shown;

[0017] Figure 2 A structural schematic diagram of a cooling assembly is shown Figure 1

[0018] Figure 3 A structural schematic diagram of a cooling assembly is shown Figure 1

[0019] A flow direction schematic diagram of a cooling medium of the cooling assembly is shown Figure 4 Figure 3 A structural schematic diagram of a sampling assembly is shown

[0020] Figure 5 Figure 1 A structural schematic diagram of a sampling assembly is shown

[0021] Figure 6 A top view of the sampling assembly is shown Figure 5

[0022] A structural schematic diagram of an isolation plate is shown Figure 7 Figure 5 A sectional view of the battery pack at a harmonica tube is shown

[0023] Figure 8 A structural schematic diagram of a busbar is shown Figure 1

[0024] Figure 9 A structural schematic diagram of a busbar is shown.

[0025] Among the above drawings, the following reference signs are included:

[0026] 10, battery; 11, pole; 20, cooling assembly; 21, avoiding passage; 22, harmonica tube; 23, first harmonica tube group; 24, second harmonica tube group; 25, liquid inlet pipeline; 251, liquid inlet pipe; 252, liquid inlet manifold; 26, intermediate pipeline; 27, liquid outlet pipeline; 271, liquid outlet pipe; 272, liquid outlet manifold; 28, heat conduction member; 29, plug cover; 30, sampling assembly; 31, heat conduction groove; 32, isolation plate; 321, avoiding hole; 33, busbar; 331, recess; 34, circuit board. DETAILED DESCRIPTION

[0027] ​​​​​It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] In the present application, unless otherwise specified, the orientation words such as "upper, lower, top, bottom" used herein are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0030] In order to solve the problem of low utilization rate of longitudinal space of the battery pack in the prior art, the utility model provides a kind of battery pack and battery pack.

[0031] As Figures 1 to 9 The battery pack shown in the drawing, comprising: battery column, cooling assembly 20 and sampling assembly 30, battery column includes a plurality of sequentially arranged battery 10, cooling assembly 20 is arranged in the upper of battery 10;Sampling assembly 30 is arranged in the upper of cooling assembly 20, cooling assembly 20 has to avoid passage 21, sampling assembly 30 and / or battery 10 part is arranged in avoid passage 21, sampling assembly 30 and battery 10 are contacted through avoid passage 21 and are conducted.

[0032] The cooling assembly 20 is arranged above the battery 10, and the sampling assembly 30 is arranged above the cooling assembly 20, so that the sampling assembly 30, the cooling assembly 20 and the battery 10 are arranged in a manner of being stacked from top to bottom. The cooling assembly 20 is arranged in the space between the sampling assembly 30 and the battery 10, so that the longitudinal space occupied by the cooling assembly 20 can be saved. In this way, on the one hand, the longitudinal space of the battery pack is effectively utilized, and the longitudinal utilization rate is increased, so that the weight and cost of the battery pack are reduced, the utilization rate and energy density of the whole pack are improved, and on the other hand, the cooling assembly 20 can cool the sampling assembly 30 and the battery 10. In addition, considering the conduction between the sampling assembly 30 and the battery 10, the cooling assembly 20 is provided with the avoiding channel 21, and the battery 10 and the sampling assembly 30 can be arranged in the avoiding channel 21, so that the sampling assembly 30 and the battery 10 can be in contact through the avoiding channel 21. In this way, on the one hand, the cooling assembly 20 can cool the battery 10 and the sampling assembly 30 at the same time, and on the other hand, the battery 10, the cooling assembly 20 and the sampling assembly 30 can be stacked in sequence, so that the space required by the thickness of the cooling assembly 20 can be saved, and the longitudinal space utilization rate of the battery pack is improved.

[0033] As shown in Figure 3 and Figure 4 In the embodiment, the cooling assembly 20 includes a plurality of harmonica tubes 22, and a through hole is arranged in the middle of each harmonica tube 22 to ensure the flow of the cooling medium in the through hole. The harmonica tubes 22 in the embodiment are arranged at intervals along the arrangement direction of the battery 10. The arrangement direction of the battery 10 can be the arrangement direction of the same group of batteries 10 or the arrangement direction of different groups of batteries 10. In the embodiment, the harmonica tubes 22 are arranged at intervals along the arrangement direction of the same group of batteries 10. In this way, the interval between the harmonica tubes 22 can naturally serve as the avoiding channel 21, so that the sampling assembly 30 and the battery 10 can pass through the avoiding channel 21 between the harmonica tubes 22 to contact each other.

[0034] In the embodiment, the harmonica tubes 22 are preferably arranged at equal intervals. This arrangement can ensure the uniform distribution of the cooling medium in the cooling assembly 20, improve the cooling efficiency, and further ensure the uniform flow of the cooling medium in the battery pack, so that the local overheating phenomenon can be effectively avoided.

[0035] As shown in Figure 3 and Figure 4As shown, the cooling assembly 20 of the embodiment comprises a plurality of mouthpiece tubes 22 and connecting pieces connecting the mouthpiece tubes 22, specifically, the plurality of mouthpiece tubes 22 are arranged in groups, and comprise a first mouthpiece tube group 23 and a second mouthpiece tube group 24, and the connecting pieces comprise an inlet pipe 25, an intermediate pipe 26 and an outlet pipe 27. Among them, the inlet pipe 25 serves as a unified inlet channel, the same end of all mouthpiece tubes 22 in the first mouthpiece tube group 23 is connected and communicated with the inlet pipe 25, and the other end of the first mouthpiece tube group 23 and one end of the second mouthpiece tube group 24 are connected and communicated with the inlet pipe 25, so that the first mouthpiece tube group 23 and the second mouthpiece tube group 24 are connected and communicated through the intermediate pipe 26, and the same end of all mouthpiece tubes 22 in the outlet pipe 27 is connected and communicated with the outlet pipe 27. In this way, the flow path formed is that the cooling medium enters from the inlet pipe 25, is divided into each mouthpiece tube 22 in the first mouthpiece tube group 23 through the inlet pipe 25, is converged in the intermediate pipe 26 through each mouthpiece tube 22 in the first mouthpiece tube group 23, is divided into each mouthpiece tube 22 in the second mouthpiece tube group 24 through the intermediate pipe 26, and is converged into the outlet pipe 27 through each mouthpiece tube 22 in the second mouthpiece tube group 24, and is concentrated out from the outlet pipe 27.

[0036] Since each mouthpiece tube 22 of the embodiment is arranged in a parallel and spaced manner, the length directions of the inlet pipe 25, the intermediate pipe 26 and the outlet pipe 27 are arranged in a substantially parallel manner, and the inlet pipe 25 and the outlet pipe 27 are located on the same side of the mouthpiece tube group, and the intermediate pipe 26 is located on the opposite side, so that the flow path of the cooling medium forms a spiral shape, and ensures that basically all positions above the battery can be cooled by the cooling assembly 20.

[0037] Of course, the number of groups of the above-mentioned mouthpiece tubes 22 can also be increased as needed, for example, three groups or more groups are arranged, at this time, the flow path of the cooling medium forms an S-shaped spiral path. At the same time, in addition to the above-mentioned series arrangement form, the parallel arrangement form can also be used between the mouthpiece tube groups, for example, each mouthpiece tube group has its own inlet pipe, and is divided into each inlet pipe through a flow divider to realize mutual independence between each mouthpiece tube group.

[0038] In the present embodiment, the liquid inlet pipeline 25 comprises a liquid inlet pipe 251 and a liquid inlet manifold 252. Specifically, a through hole is formed in the middle of the circumferential side of the liquid inlet manifold 252, and the through hole is connected in communication with the liquid inlet pipe 251. A plurality of through holes are formed in the circumferential side of the liquid inlet manifold 252 along the length direction, and the number of the through holes is the same as the number of the organ pipes 22 in the first organ pipe group 23. Thus, the through holes in the other side of the liquid inlet manifold 252 can be connected in communication with the organ pipes 22 in the first organ pipe group 23, so that the cooling medium in the liquid inlet pipe 251 can be distributed to each of the organ pipes 22 in the first organ pipe group 23 through the liquid inlet manifold 252.

[0039] Similarly, the liquid outlet pipeline 27 in the present embodiment comprises a liquid outlet pipe 271 and a liquid outlet manifold 272. Specifically, a through hole is formed in the middle of the circumferential side of the liquid outlet manifold 272, and the through hole is connected in communication with the liquid outlet pipe 271. A plurality of through holes are formed in the circumferential side of the liquid outlet manifold 272 along the length direction, and the number of the through holes is the same as the number of the organ pipes 22 in the second organ pipe group 24. Thus, the through holes in the other side of the liquid outlet manifold 272 can be connected in communication with the organ pipes 22 in the second organ pipe group 24, so that the cooling medium in each of the organ pipes 22 in the second organ pipe group 24 can flow into the liquid outlet manifold 272, and finally flow out through the liquid outlet pipe 271.

[0040] Similarly, the intermediate pipeline 26 in the present embodiment is a hollow structure, and a group of through holes are formed in the circumferential side of the intermediate pipeline 26 along the length direction, and the number of the through holes is the same as the number of the organ pipes 22 in the first organ pipe group 23. The diameter of the through holes is equal to the diameter of the through holes in the organ pipes 22. Thus, a section of the intermediate pipeline 26 can be connected in communication with each of the organ pipes 22 in the first organ pipe group 23. Similarly, another group of through holes are formed in the same side of the intermediate pipeline 26 along the length direction, and the number of the through holes is the same as the number of the organ pipes 22 in the second organ pipe group 24. The diameter of the through holes is equal to the diameter of the through holes in the organ pipes 22. Thus, another section of the intermediate pipeline 26 can be connected in communication with each of the organ pipes 22 in the second organ pipe group 24. Such grouping and pipeline design can further optimize the flow path of the cooling medium, and improve the uniformity of the flow of the cooling medium. Through the fine pipeline grouping and connection design, the cooling effect in the battery pack can be improved, the heat dissipation of the battery can be more rapid and uniform, and the stability and safety of the battery can be further improved. It should be noted that the end of the liquid inlet manifold 252, the liquid outlet manifold 272 and the intermediate pipeline 26 is provided with a plug 29 to ensure the sealing and working stability of the cooling assembly 20.

[0041] In summary, the cooling medium enters the first set of concertina tubes 23 through the inlet pipe 251, is distributed to each concertina tube 22 via the inlet manifold 252, and then flows into the intermediate pipe 26. The cooling medium in the intermediate pipe 26 enters each concertina tube 22 of the second set of concertina tubes 24 through the through hole matched with the second set of concertina tubes 24, and finally flows into the outlet manifold 272 matched in communication with the other end of the second set of concertina tubes 24, and is then discharged through the outlet pipe 271 on the other side of the outlet manifold 272. Through the design of the manifold, the cooling medium can be evenly distributed and flow in the set of concertina tubes 22, and the flow of the cooling medium in the concertina tube 22 is more efficient, thereby releasing and absorbing a large amount of heat in a short time, improving the heat dissipation effect and safety performance of the battery.

[0042] As shown in Figure 3 In this embodiment, the cooling assembly 20 further comprises a heat-conducting member 28 arranged between the concertina tube 22 and the battery 10 and / or between the concertina tube 22 and the sampling assembly 30. In this embodiment, the heat-conducting member 28 is arranged on the upper and lower sides of the concertina tube 22. The heat-conducting member on the upper side is arranged between the concertina tube 22 and the sampling assembly 30, and the heat-conducting member on the lower side is arranged between the concertina tube 22 and the top cover of the aluminum shell on the top of the battery 10. In this way, the heat generated by the battery 10 enters the cooling assembly 20 through the heat-conducting member on the lower side, is cooled and cooled by the cooling assembly 20, and then is conducted to the outside of the battery through the heat-conducting member on the upper side. On the one hand, the arrangement of the heat-conducting member 28 can make the concertina tube 22 and the battery 10, and the concertina tube 22 and the sampling assembly 30 fit more closely, thereby enhancing heat conduction and significantly accelerating the conduction speed of heat and improving cooling efficiency. On the other hand, in the battery application scenario requiring rapid heat dissipation, the use of the heat-conducting member 28 can reduce the accumulation of heat during the charging and discharging process of the battery, thereby avoiding the performance degradation of the battery and other safety hazards. Of course, the heat-conducting member 28 can also be arranged only between the concertina tube 22 and the battery 10, or between the concertina tube 22 and the sampling assembly 30.

[0043] In this embodiment, the heat-conducting member 28 is an insulating member, thereby isolating the battery 10, the concertina tube 22, and the sampling assembly 30 while ensuring good heat dissipation effect. The insulating heat-conducting member 28 not only enhances heat conduction but also ensures the electrical safety of the battery pack, thereby avoiding the risk of fire and explosion caused by electrical problems and improving the safety level of the battery pack. In addition to the arrangement of the insulating member, the surface of the concertina tube 22 can be insulated to further improve the insulation performance. Similarly, the cooling medium of this embodiment can be a cooling liquid such as ethylene glycol, a refrigerant such as R134a, or an insulating liquid such as fluorinated liquid.

[0044] As shown in Figure 7 and Figure 8As shown, in the present embodiment, the sampling assembly 30 has a heat conduction groove 31, and the heat conduction member 28 on the harmonica tube 22 towards the sampling assembly 30, that is, the heat conduction member on the upper side of the harmonica tube 22 can be embedded and installed in the heat conduction groove 31. In this way, on the one hand, the close contact between the sampling assembly 30 and the cooling assembly 20 can be ensured, and the heat conduction efficiency is improved. On the other hand, the space in the longitudinal direction of the battery pack is compressed, and the height of the battery pack is reduced, so that the battery has better portability and space utilization while maintaining efficient cooling and heat dissipation, and the weight and cost of the whole battery pack are reduced.

[0045] In the present embodiment, the sampling assembly 30 includes an isolation plate 32, a bus bar 33 and a circuit board 34. The isolation plate 32 is arranged above the cooling assembly 20, the bus bar 33 is arranged above the isolation plate 32, and the circuit board 34 is also arranged above the isolation plate 32. In this way, the isolation plate 32 is the lower layer, the isolation plate 32 is directly arranged above the cooling assembly 20, and the bus bar 33 and the circuit board 34 are arranged above the isolation plate 32, thereby forming a multi-layer structure as a whole. Since the cooling assembly 20 is located below the sampling assembly 30, the heat conduction groove 31 is essentially provided at the lower surface of the isolation plate 32, and the heat conduction groove 31 penetrates the isolation plate 32, so that the heat conduction member 28 can pass through the heat conduction groove 31 and directly contact and transfer heat with the bus bar 33, as shown. Figure 8 The isolation plate 32 also has an upper and lower through hole 321, and the through hole 321 is in communication with the avoiding passage 21. In this way, as shown, Figure 7 and Figure 8 The electrode terminal of the battery 10, that is, the pole 11 can pass through the avoiding passage 21 and the avoiding hole 321 to realize contact and conduction with the bus bar 33, and realize electrical connection.

[0046] Optionally, the heat conduction member 28 can be a heat conduction gel, a heat conduction structural adhesive or a heat conduction pad, so as to ensure the cooling and heat dissipation of the battery pack. The heat conduction members 28 on the upper side and the lower side of the harmonica tube 22 can be the same kind of heat conduction member, or different heat conduction members according to different needs. When the heat conduction member 28 on the upper side is a heat conduction structural adhesive, the bus bar 33 can be tightly attached to the pole 11 of the battery 10 through pre-pressing, and the bus bar 33 can be tightly attached to the harmonica tube 22 after the heat conduction structural adhesive is stable, and the connection between the bus bar 33 and the pole 11 is reliable.

[0047] As shown, Figure 9As shown, in this embodiment, the busbar 33 has a recess 331, which is recessed away from the isolation plate 32 and communicates with the heat-conducting groove 31. Specifically, the busbar 33 is made of aluminum and has an overall Z-shaped shape, with the middle bent outward to form the recess 331 and the two sides extending to the left and right to form planar portions. By designing the recess 331 on the busbar 33, at least a portion of the cooling component 20 can be accommodated in the recess 331, thereby contacting the inner surface of the recess 331 for heat transfer. In particular, when the upper heat-conducting component 28 is a thermally conductive structural adhesive or thermally conductive gel, the design of the recess 331 can accommodate more adhesive, increase the contact area, and enhance the heat dissipation effect.

[0048] The connections and fits between the components described above in this embodiment can be made using various methods such as welding, bonding, and bolting as needed, as long as the connection and processing requirements are met.

[0049] This embodiment also provides a battery pack, including a housing and the aforementioned battery pack, wherein the battery pack is disposed within the housing. Further, a heat dissipation component is provided between the bottom surface of the battery pack and the bottom wall of the housing. The heat dissipation component can be a cold plate, a metal plate, or a composite plate, etc. A cold plate can improve the cooling performance of the entire pack, a metal plate can increase the structural strength of the entire pack, and a composite plate can reduce the weight of the entire pack. The heat dissipation component can work in conjunction with the cooling component 20 to achieve cooling of both the upper and lower parts, improving the cooling effect. Overall, the battery pack of this embodiment is compact in structure and has high space utilization. In practical applications, it can significantly improve the thermal management performance of the battery, extend battery life, and improve the overall performance and safety of the battery pack. The battery pack is also suitable for operating conditions requiring high load and high power. By optimizing thermal management and electrical connections, the battery pack can better adapt to various extreme working environments, ensuring the stability and safety of the battery under different conditions. Furthermore, the battery pack design not only improves thermal management efficiency but also optimizes electrical connections. Simultaneously, efficient thermal management ensures that the battery remains stable under high load operation, improving the safety of battery use.

[0050] It should be noted that "multiple" in the above embodiments refers to at least two.

[0051] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0052] 1. Stacking the battery, cooling components, and sampling components in sequence can save the space required for the thickness of the cooling components, improve the vertical space utilization of the battery pack, solve the problem of low vertical space utilization of the battery pack in the existing technology, make effective use of the vertical space of the battery pack, achieve the effect of increasing the vertical utilization rate, thereby reducing the weight and cost of the battery pack, and improving the overall utilization rate and energy density of the pack.

[0053] 2. The cooling assembly can cool the battery and the sampling assembly at the same time, thereby improving the heat dissipation cooling effect.

[0054] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0056] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of these terms in the description and in the claims of the present application is merely for distinguishing between the similar elements, and not necessarily for describing a particular sequential or chronological order, unless explicitly stated otherwise.

[0057] The preferred embodiments of the present application have been described above with the specific embodiments. The present application can be modified and changed by those skilled in the art, and all the modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery pack characterized by comprising: The battery pack comprises: a battery column comprising a plurality of batteries (10) arranged in sequence; a cooling assembly (20) arranged above the batteries (10); a sampling assembly (30) arranged above the cooling assembly (20), the cooling assembly (20) having an avoiding passage (21), the sampling assembly (30) and / or the batteries (10) being partially arranged in the avoiding passage (21), the sampling assembly (30) and the batteries (10) being in contact through the avoiding passage (21).

2. The battery pack of claim 1, wherein, The cooling assembly (20) comprises a plurality of harmonica tubes (22) arranged in communication with each other, each of the harmonica tubes (22) being arranged in sequence and spaced apart along the arrangement direction of the batteries (10), and the avoiding passage (21) being formed between the harmonica tubes (22).

3. The battery pack of claim 2, wherein, The plurality of harmonica tubes (22) are arranged in groups, and comprise a first harmonica tube group (23) and a second harmonica tube group (24), and the cooling assembly (20) further comprises: a liquid inlet pipeline (25) connected in communication with one end of the first harmonica tube group (23); a middle pipeline (26) connected in communication with the other end of the first harmonica tube group (23) and one end of the second harmonica tube group (24); and a liquid outlet pipeline (27) connected in communication with the other end of the second harmonica tube group (24).

4. The battery pack according to claim 3, wherein: the liquid inlet pipeline (25) comprises a liquid inlet pipe (251) and a liquid inlet manifold (252), the liquid inlet pipe (251) being connected with the liquid inlet manifold (252), each of the harmonica tubes (22) of the first harmonica tube group (23) being in communication with the liquid inlet manifold (252), and the cooling medium in the liquid inlet pipe (251) being shunted to each of the harmonica tubes (22) of the first harmonica tube group (23) through the liquid inlet manifold (252); and / or the liquid outlet pipeline (27) comprises a liquid outlet pipe (271) and a liquid outlet manifold (272), the liquid outlet pipe (271) being connected with the liquid outlet manifold (272), each of the harmonica tubes (22) of the second harmonica tube group (24) being in communication with the liquid outlet manifold (272), and the cooling medium in each of the harmonica tubes (22) of the second harmonica tube group (24) being converged to the liquid outlet pipe (271) through the liquid outlet manifold (272).

5. The battery pack of claim 2, wherein, The cooling assembly (20) further comprises a heat-conducting member (28) arranged between the harmonica tubes (22) and the batteries (10) and / or between the harmonica tubes (22) and the sampling assembly (30).

6. The battery pack of claim 5, wherein, The heat-conducting member (28) is an insulating member.

7. The battery pack according to any one of claims 1 to 6, characterized by, The sampling assembly (30) comprises: An isolation plate (32) is arranged above the cooling assembly (20), the isolation plate (32) has a through-going avoiding hole (321) which is in communication with the avoiding passage (21); A busbar (33) is arranged above the isolation plate (32), at least a part of the busbar (33) is arranged at the avoiding hole (321), the electrode terminal of the battery (10) is in contact with the busbar (33) through the avoiding passage (21) and the avoiding hole (321); A circuit board (34) is arranged above the isolation plate (32) and in contact with the busbar (33).

8. The battery pack of claim 7, wherein, The isolation plate (32) has a through-going heat-conducting groove (31), at least a part of the busbar (33) is arranged at the heat-conducting groove (31), at least a part of the cooling assembly (20) is embedded in the heat-conducting groove (31) and in contact with the busbar (33) for heat transfer.

9. The battery pack of claim 8, wherein, The busbar (33) has a recess (331) which is recessed away from the isolation plate (32), the recess (331) is in communication with the heat-conducting groove (31), the cooling assembly (20) is partially accommodated in the recess (331) and in contact with the inner surface of the recess (331) for heat transfer.

10. A battery pack, characterized by, A battery pack according to any one of claims 1 to 9 is arranged in a box.

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