Battery pack and electric equipment

Abstract

The utility model relates to the technical field of power batteries, in particular to a battery pack, which comprises a box body, a cold plate, a quick-change component and a connecting pipeline, the box body comprises a frame body and an accommodating cavity enclosed by the frame body, and the accommodating cavity comprises a battery bin for placing a battery module, and a first bin and a second bin which are arranged on two opposite sides of the battery bin; the cold plate is arranged in the containing cavity, the quick-change assembly is arranged in the first bin and comprises a base plate and extension pipes arranged on the two opposite sides of the base plate, the connecting pipeline comprises a bent connecting pipe and a quick-plug connector, the first end of the bent connecting pipe is connected with the quick-plug connector in a matched mode, the second end of the bent connecting pipe is connected with the extension pipes in a matched mode, and the quick-plug connector is connected with the cold plate. According to the battery pack, the number of parts can be reduced, the assembly time is saved, the tolerance absorption capacity of the corrugated pipe can be improved, and the energy density of the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and specifically provides a battery pack and electrical equipment. Background Art

[0002] With the development of society, in order to reduce the pollution of automobile exhaust to the atmosphere, new energy vehicles such as lithium batteries have been vigorously promoted. As the power source of new energy vehicles, the on-board battery will dissipate a lot of heat when working. Usually, a set of special water cooling pipelines are used in the battery pack to control the temperature of the battery. As the outside world's requirements for the power and cruising range of new energy vehicles are getting higher and higher, the size of the battery module is also getting larger, which makes the conditions for the layout of the water cooling pipeline higher.

[0003] When assembling the traditional quick-connect fittings with the water quick-change assembly, the bellows is connected to the quick-connect fitting to form a connecting pipeline. After the connecting pipeline is plugged into the liquid cooling plate, the other end of the connecting pipeline needs to be plugged into the water quick-change fitting in the horizontal direction, and this applies to both the inlet and outlet pipes. The quick-connect fitting must be connected first, and then the quick-connect fitting must be connected to the water quick-change fitting. This not only increases the number of parts, but also increases the assembly time. At the same time, the connecting pipeline is plugged in horizontally and in opposite directions, so the plug-in space is limited and the operation is inconvenient. In addition, the two quick-connect fittings occupy a certain space, and the length of the bellows will be reduced, which is not conducive to absorbing tolerances during assembly.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above-mentioned technical problems and provide a new battery pack which can reduce the number of parts, save assembly time, increase the tolerance absorption capacity of the bellows, and improve the energy density of the battery pack.

[0006] The utility model provides a battery pack, comprising:

[0007] A box body, the box body comprising a frame body and a receiving cavity formed by the frame body, the receiving cavity comprising a battery compartment for placing a battery module and a first compartment and a second compartment arranged on opposite sides of the battery compartment;

[0008] A cold plate, the cold plate being arranged in the receiving cavity;

[0009] A quick-change assembly, the quick-change assembly is arranged in the first bin, the quick-change assembly comprises a base plate and extension tubes arranged on two opposite sides of the base plate;

[0010] A connecting pipeline, the connecting pipeline comprising a bent connecting pipe and a quick-connect connector;

[0011] Wherein, the first end of the bent connecting tube is cooperatively connected with the quick-plug connector, the second end of the bent connecting tube is cooperatively connected with the extension tube, and the quick-plug connector is connected with the cold plate.

[0012] When the above technical solution is adopted, the quick-change assembly and connecting pipeline of the utility model are installed in the first compartment of the box body, the first end of the bent connecting pipe cooperates with the quick-insert connector, and the second end directly cooperates with the extension tube. The space occupied by the quick-change assembly and the connecting pipeline is small, and the space required by the first compartment of the box body is also small, thereby increasing the energy density of the battery pack without increasing the size of the battery pack. The second end directly cooperates with the extension tube, eliminating the adapter joint, which can not only reduce the number of parts and reduce costs, but also reduce the assembly process, thereby saving assembly time. Because the adapter joint is omitted, the saved space can increase the length of the bellows, which is conducive to absorbing tolerances during assembly.

[0013] In the preferred technical solution of the above quick-change connector, the cold plate is provided with a cold plate interface that cooperates with the quick-connect connector, and the first compartment is provided with a mounting hole for accommodating the cold plate interface and / or the quick-connect connector.

[0014] When the above technical solution is adopted, the liquid in the quick-change assembly enters the cold plate through the cold plate interface. The mounting hole set in the first chamber can allow the cold plate interface to pass through, thereby connecting the quick-change assembly, the connecting pipe and the cold plate. Through the setting and coordination of the cold plate interface and the mounting hole, the conduction and flow of the liquid are achieved.

[0015] In the preferred technical solution of the above quick-change joint, the quick-change assembly is arranged between the two mounting holes.

[0016] When the above technical solution is adopted, cold plate interfaces are respectively accommodated in the two mounting holes, and the liquid in the quick-change assembly is connected to the two cold plate interfaces respectively through two connecting pipes. The cold plate interfaces have one inlet and one outlet. By respectively arranging the inlet and outlet on both sides of the quick-change assembly, the efficiency of liquid flow is improved, which is beneficial to the flow of liquid, thereby achieving a better cooling effect; the two mounting holes are arranged on both sides of the quick-change assembly, that is, the inlet and outlet are arranged on both sides of the quick-change assembly, which can not only reduce the flow resistance, but also facilitate the arrangement of pipelines and space utilization.

[0017] In the preferred technical solution of the above quick-change connector, the two mounting holes are located between the battery module and the quick-change assembly.

[0018] When the above technical solution is adopted, the mounting hole is connected to the inlet and outlet interface of the cold plate. The mounting hole is located between the battery module and the quick-change assembly, so as to realize the connection between the connecting pipe and the cold plate. Due to the limitation of the space in the battery pack, such an arrangement can reasonably utilize the space in the battery pack, thereby improving the energy density of the battery pack without increasing the size of the battery pack.

[0019] In the preferred technical solution of the above-mentioned quick-change connector, the first bin is arranged in a trapezoidal shape in the horizontal projection direction, the first bin is provided with a first wall at the lower bottom of the trapezoid, and a second wall is provided at the upper bottom of the trapezoid, the mounting hole is arranged close to the first wall, and the quick-change assembly is arranged close to the second wall.

[0020] When adopting the above technical solution, the mounting hole is arranged on the side with a larger space, so that the distance between the two mounting holes can be maximized, which is convenient for the installation of the cold plate and the setting of the connecting pipeline. At the same time, the connecting pipeline is arranged close to the trapezoidal waist of the first bin, which can reduce the bending of the connecting pipeline and thereby minimize the flow resistance.

[0021] In the preferred technical solution of the above quick-change connector, the direction in which the quick-change connector is plugged into the cold plate is perpendicular to the direction in which the bent connecting tube is plugged into the extension tube.

[0022] When the above technical solution is adopted, the plug-in direction of the quick-connect connector is perpendicular to the direction in which the bent connecting tube is plugged into the extension tube, that is, the quick-connect connector and the bent connecting tube can be plugged in different directions, independently of each other during plugging, and the force directions during plugging are different, which will not affect each other, not only facilitating assembly but also increasing the reliability of assembly.

[0023] In the preferred technical solution of the above-mentioned quick-change connector, the bent connecting tube includes a first connecting section, a second connecting section and a corrugated section, the corrugated section connects the first connecting section and the second connecting section, the first connecting section is cooperatively connected to the extension tube, and the second connecting section is cooperatively connected to the quick-connect connector.

[0024] When the above technical solution is adopted, a corrugated section is arranged in the middle of the bent connecting tube and connecting sections are arranged on both sides. The connecting sections on both sides cooperate with the extension tube and the quick-plug connector respectively. The corrugated section can be bent without affecting the reliability of the connection with the extension tube and the quick-plug connector. A reliable connection between the quick-change assembly and the cold plate can be achieved, and the space limitation of the first warehouse can be met.

[0025] In the preferred technical solution of the above quick-change connector, the first connecting section and the second connecting section are arranged at an obtuse angle in the horizontal projection direction.

[0026] When the above technical solution is adopted, the first connecting section is connected to the extension tube, the second connecting section is connected to the quick-connect connector, the liquid in the quick-change assembly enters the second connecting section through the first connecting section, or the liquid in the cold plate enters the first connecting section through the second connecting section. The setting of the obtuse angle can maximize the reduction of flow resistance and thereby improve the heat exchange efficiency.

[0027] In the preferred technical solution of the above quick-change connector, the length of the first connecting section and / or the second connecting section is not greater than the length of the corrugated section.

[0028] When adopting the above technical solution, the length of the first connecting section and / or the second connecting section is less than the length of the corrugated section, or is equal to the length of the corrugated section, so that the length of the corrugated section can be increased and easier to bend, so that the connecting pipeline has a greater ability to absorb tolerance.

[0029] In a second aspect, the utility model provides an electrical device, comprising the battery pack described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0031] Figure 1 It is a schematic diagram of an explosion of the battery pack of the utility model;

[0032] Figure 2 It is a structural schematic diagram of the battery pack of the utility model;

[0033] Figure 3 It is a top view of the battery pack of the present utility model.

[0034] Reference numerals:

[0035] 1. Box body; 10. Frame body; 11. Accommodating cavity; 12. Battery module; 13. First compartment; 131. First wall; 132. Second wall; 14. Mounting hole;

[0036] 2. Cold plate; 20. Main body; 21. First cold plate interface; 22. Second cold plate interface;

[0037] 3. Quick-change assembly; 30. Base plate; 31. Plug-in tube; 32. Extension tube;

[0038] 4. Bending connecting pipe; 41. First connecting section; 42. Corrugated section; 43. Second connecting section;

[0039] 5. Quick-connect connector. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0041] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connection", "setting" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] like Figures 1 to 3 As shown, in the first aspect, the battery pack of the utility model includes a box body 1, a cold plate 2, a quick-change assembly 3 and a connecting pipeline. The box body 1 includes a frame body 10 and a receiving cavity 11 formed by the frame body 10. The receiving cavity 11 includes a battery compartment (not numbered in the figure) for placing a battery module 12 and a first compartment 13 and a second compartment (shown in the figure) arranged on opposite sides of the battery compartment. The cold plate 2 is arranged in the receiving cavity 11, and the quick-change assembly 3 is arranged in the first compartment 13. The quick-change assembly 3 includes a base plate 30 and an extension tube 32 arranged on opposite sides of the base plate 30. The connecting pipeline includes a bent connecting tube 4 and a quick-plug connector 5. The first end of the bent connecting tube 4 is connected to the quick-plug connector 5, and the second end of the bent connecting tube 4 is connected to the extension tube 32. The quick-plug connector 5 is connected to the cold plate 2.

[0044] The quick-change assembly 3 and connecting pipeline of the battery pack of the utility model are installed in the first compartment 13 of the box body 1. The first end of the bent connecting pipe 4 cooperates with the quick-connect connector 5, and the second end directly cooperates with the extension tube 32. The quick-change assembly 3 and the connecting pipeline occupy a small space, and the space required by the first compartment 13 of the box body 1 is also small, thereby increasing the energy density of the battery pack without increasing the size of the battery pack. The second end of the bent connecting pipe 4 directly cooperates with the extension tube 32, eliminating the adapter joint, which can not only reduce the number of parts and reduce costs, but also reduce the assembly process, thereby saving assembly time. Because the adapter joint is omitted, the saved space can increase the length of the bent connecting pipe 4, and improve the ability to absorb tolerances during assembly. In the embodiment of the utility model, the bent connecting pipe 4 is a corrugated tube, and of course it can also be a plastic hose with elasticity or bending and / or telescopic properties, or a metal tube with bending and / or telescopic properties.

[0045] like Figure 1 As shown, the cold plate 2 is provided with a cold plate interface 1 that cooperates with the quick-plug connector 5, and the first chamber 13 is provided with a mounting hole 14 for accommodating the cold plate interface and / or the quick-plug connector 5. The cold plate interface includes a first cold plate interface 21 and a second cold plate interface 22. One of the first cold plate interface 21 and the second cold plate interface 22 is a liquid inlet, and the other is a liquid outlet. The liquid in the quick-change assembly 3 enters the cold plate 2 through the cold plate interface. The mounting hole 14 provided in the first chamber 13 can be passed through by the cold plate interface, thereby connecting the quick-change assembly 3, the connecting pipeline and the cold plate 2. Through the setting and cooperation of the cold plate interface and the mounting hole 14, the conduction and flow of the cooling liquid are realized.

[0046] like Figure 2 and Figure 3 As shown, the quick-change assembly 3 is arranged between two mounting holes 14, and the two mounting holes 14 respectively accommodate cold plate interfaces. The liquid in the quick-change assembly 3 is connected and conducted with the two cold plate interfaces through two connecting pipes, and the cold plate interfaces are one inlet and one outlet. By respectively arranging the inlet and outlet on both sides of the quick-change assembly 3, the efficiency of liquid flow is improved, which is conducive to the flow of liquid, so that the cooling effect can be better achieved. The two mounting holes 14 are arranged on both sides of the quick-change assembly 3, that is, the inlet and outlet are arranged on both sides of the quick-change assembly 3, which can not only reduce the flow resistance, but also facilitate the arrangement of the pipeline and space utilization. The two mounting holes 14 are located between the battery module 12 and the quick-change assembly 3, and the mounting holes 14 are connected to the inlet and outlet interfaces of the cold plate 2. The mounting holes 14 are located between the battery module 12 and the quick-change assembly 3, and the connection between the connecting pipe and the cold plate 2 can be realized. Due to the limitation of the space in the battery pack, such an arrangement can reasonably utilize the space in the battery pack, and the energy density of the battery pack is improved without increasing the size of the battery pack.

[0047] Reference Figure 3The first bin 13 is arranged in a trapezoidal shape in the horizontal projection direction. The first bin 13 is provided with a first wall 131 at the lower bottom of the trapezoid, and a second wall 132 at the upper bottom of the trapezoid. The mounting hole 14 is arranged near the first wall 131, and the quick-change assembly 3 is arranged near the second wall 132. The mounting hole 14 is arranged on the side with a larger space, so that the distance between the two mounting holes 14 can be maximized, which is convenient for the installation of the cold plate 2 and the setting of the connecting pipeline. At the same time, the connecting pipeline is arranged close to the waist of the trapezoid of the first bin 13, which can reduce the bending of the connecting pipeline and thus minimize the flow resistance. The direction in which the quick connector 5 is plugged into the cold plate 2 is perpendicular to the direction in which the bent connecting pipe 4 is plugged into the extension pipe 32. The plugging direction of the quick connector 5 is perpendicular to the direction in which the bent connecting pipe 4 is plugged into the extension pipe 32, that is, the quick connector 5 and the bent connecting pipe 4 can be plugged in in different directions, and they are independent of each other during plugging. Due to the different plugging directions, they will not affect each other during plugging, which is not only convenient for assembly but also can increase the reliability of assembly.

[0048] Reference Figure 3 The bending connecting tube 4 includes a first connecting section 41, a second connecting section 43 and a corrugated section 42. The corrugated section 42 connects the first connecting section 41 and the second connecting section 43. The first connecting section 41 is connected to the extension tube 32, and the second connecting section 43 is connected to the quick-connect connector 5. By arranging the corrugated section 42 in the middle of the bending connecting tube 4, and arranging the first connecting section 41 and the second connecting section 43 on both sides, the first connecting section 41 and the second connecting section 43 are respectively matched with the extension tube 32 and the quick-connect connector 5. The corrugated section 42 can be bent without affecting the reliability of the connection with the extension tube 32 and the quick-connect connector 5, so as to realize a reliable connection between the quick-change assembly 3 and the cold plate 2, and meet the space limitation of the first warehouse 13.

[0049] The angle between the first connecting section 41 and the second connecting section 43 in the horizontal projection direction is set at an obtuse angle. The first connecting section 41 is connected to the extension tube 32, and the second connecting section 43 is connected to the quick-connect connector 5. The liquid in the quick-change assembly 3 enters the second connecting section 43 through the first connecting section 41, or the liquid in the cold plate 2 enters the first connecting section 41 through the second connecting section 43. The setting of the obtuse angle can maximize the reduction of flow resistance, thereby improving the heat exchange efficiency. The length of the first connecting section 41 and / or the second connecting section 43 is not greater than the length of the corrugated section 42. In the embodiment of the utility model, only the length of the first connecting section 41 can be less than or equal to the length of the corrugated section 42, or only the length of the second connecting section 43 can be less than or equal to the length of the corrugated section 42, or both the length of the first connecting section 41 and the second connecting section 43 can be less than or equal to the length of the corrugated section 42. In this way, without changing the overall length of the bending connecting pipe, the length of the corrugated section 42 can be increased, which is more convenient for bending, so that the connecting pipeline has a greater ability to absorb tolerance.

[0050] In the second aspect, the electric device of the utility model includes the battery pack of the first aspect. The electric device of this technical solution includes the battery pack of any technical solution of the utility model, and thus has all the technical effects of the battery pack of any technical solution of the utility model.

[0051] It should be noted that the above preferred implementations are only used to illustrate the principle of the utility model and are not intended to limit the protection scope of the utility model. Without departing from the principle of the utility model, those skilled in the art may adjust the above settings so that the utility model can be applied to more specific application scenarios.

[0052] Of course, the above-mentioned replaceable implementations, as well as the replaceable implementations and the preferred implementations, can be used in a cross-coordinated manner to combine new implementations to suit more specific application scenarios.

[0053] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A battery pack, characterized in that: include: A box body, the box body comprising a frame body and a receiving cavity formed by the frame body, the receiving cavity comprising a battery compartment for placing a battery module and a first compartment and a second compartment arranged on opposite sides of the battery compartment; A cold plate, the cold plate being arranged in the receiving cavity; A quick-change assembly, the quick-change assembly is arranged in the first bin, the quick-change assembly comprises a base plate and extension tubes arranged on two opposite sides of the base plate; A connecting pipeline, the connecting pipeline comprising a bent connecting pipe and a quick-connect connector; Wherein, the first end of the bent connecting tube is cooperatively connected with the quick-plug connector, the second end of the bent connecting tube is cooperatively connected with the extension tube, and the quick-plug connector is connected with the cold plate.

2. The battery pack according to claim 1, characterized in that: The cold plate is provided with a cold plate interface that cooperates with the quick-plug connector, and the first compartment is provided with a mounting hole for accommodating the cold plate interface and / or the quick-plug connector.

3. The battery pack according to claim 2, characterized in that: The quick-change assembly is arranged between the two mounting holes.

4. The battery pack according to claim 2, characterized in that: The two mounting holes are located between the battery module and the quick-change assembly.

5. The battery pack according to claim 2, characterized in that: The first bin is arranged in a trapezoidal shape in the horizontal projection direction, the first bin is provided with a first wall at the lower bottom of the trapezoid, and a second wall at the upper bottom of the trapezoid, the mounting hole is arranged close to the first wall, and the quick-change assembly is arranged close to the second wall.

6. The battery pack according to claim 1, characterized in that: The direction in which the quick-connect connector is plugged into the cold plate is perpendicular to the direction in which the bent connecting tube is plugged into the extension tube.

7. The battery pack according to claim 1, characterized in that: The bent connecting tube includes a first connecting section, a second connecting section and a corrugated section, the corrugated section connects the first connecting section and the second connecting section, the first connecting section is cooperatively connected to the extension tube, and the second connecting section is cooperatively connected to the quick-connect connector.

8. The battery pack according to claim 7, characterized in that: The first connecting section and the second connecting section are arranged at an obtuse angle in the horizontal projection direction.

9. The battery pack according to claim 7, characterized in that: The length of the first connecting section and / or the second connecting section is not greater than the length of the corrugated section.

10. An electrical device, characterized in that: A battery pack comprising the battery pack as claimed in any one of claims 1 to 9.

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