CCS assembly, battery pack and vehicle

Abstract

The utility model provides a CCS assembly, a battery pack and a vehicle, the CCS assembly comprises a support and an FFC, the FFC comprises a main body and a plurality of branch leads, the main body comprises a plurality of main leads which are sequentially arranged in the width direction of the main body, and the plurality of branch leads are respectively connected with different main leads; wherein in the length direction of the main body, the main body is provided with a first end and a second end which are opposite, in the width direction of the main body, the first end comprises a plurality of main circuit wires, the size of the second end reaches the size of at least two main circuit wires, and in the thickness direction of the main body, the side, close to the support, of the second end is bonded with the support. According to the technical scheme, the technical problem that the bonding area of the second end used for being bonded to the support is small can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to CCS assembly, battery pack and vehicle. BACKGROUND

[0002] The vehicle includes a battery pack, the battery pack includes a CCS (cell collection system) assembly, the CCS assembly includes a bracket and a FFC arranged on the bracket, and the FFC is an important component for collecting signals of battery cells.

[0003] At present, the FFC includes a main body and a plurality of branch wires, the main body includes a plurality of main wires arranged in sequence in the width direction of the main body, and the plurality of branch wires are respectively connected to different main wires. In the length direction of the main body, the main body has opposite first and second ends. In the direction from the first end to the second end, the width dimension of the main body becomes smaller and smaller until the width dimension of the second end is equal to the width dimension of one main wire.

[0004] This makes the second end have a small bonding area for bonding to the bracket, so that the main body is easily separated from the bracket. SUMMARY

[0005] Embodiments of the utility model provide a CCS assembly, a battery pack and a vehicle, which can improve the technical problem that the second end has a small bonding area for bonding to the bracket.

[0006] In a first aspect, embodiments of the utility model provide a CCS assembly, which includes:

[0007] a bracket; and

[0008] a FFC including a main body and a plurality of branch wires, the main body including a plurality of main wires arranged in sequence in the width direction of the main body, and the plurality of branch wires being respectively connected to different main wires.

[0009] In the length direction of the main body, the main body has opposite first and second ends. In the width direction of the main body, the first end includes a plurality of main wires, and the size of the second end reaches at least two main wires. In the thickness direction of the main body, the side of the second end close to the bracket is bonded to the bracket.

[0010] In an embodiment, the plurality of main wires includes a first main wire and a second main wire, the first main wire extends from the first end to the second end, the second main wire includes a first part and a second part arranged at intervals in the length direction of the main body, the first part extends to the first end, the second part extends to the second end, and the first part is connected to the branch wire.

[0011] In an embodiment, the main body has a first side close to the support in the thickness direction of the main body, the branch conductor is arranged between the first side and the support, the first side is provided with a bonding area and a non-bonding area, and the branch conductor is at least partially arranged between the non-bonding area and the support in the thickness direction of the main body, and the bonding area is bonded with the support.

[0012] In an embodiment, the CCS assembly further comprises a busbar for connecting the battery cells, the branch conductor has a third end connected to the second main conductor and a fourth end connected to the busbar, the branch conductor is arranged between the busbar and the first side, and the third end and the fourth end have a height difference in the thickness direction of the main body.

[0013] In an embodiment, the height difference is between 0.1 mm and 1.5 mm.

[0014] In an embodiment, the support is provided with a relief groove close to one side of the FFC in the thickness direction of the main body, the relief groove is arranged opposite to the non-bonding area, and the branch conductor is at least partially movably arranged in the relief groove.

[0015] In an embodiment, the relief groove has a groove width of between 10 mm and 20 mm.

[0016] In an embodiment, the support is provided with a positioning groove close to one side of the main body in the thickness direction of the main body, the main body is arranged in the positioning groove, and the main body is bonded in the positioning groove.

[0017] In an embodiment, the relief groove is arranged on a groove bottom wall of the positioning groove.

[0018] In an embodiment, the main body has a width of between 30 mm and 50 mm.

[0019] In a second aspect, embodiments of the utility model provide a battery pack, the battery pack comprising the CCS assembly.

[0020] In a third aspect, embodiments of the utility model provide a vehicle, the vehicle comprising the battery pack.

[0021] The embodiments of the utility model have the beneficial effects that:

[0022] In the embodiments of the utility model, the size of the second end reaches at least the size of two main conductors, the area of the second end close to the support is large, the bonding area of the second end and the support is improved, and thus the probability of the main body separating from the support can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 is a perspective view of a CCS assembly provided by the embodiments of the present application;

[0025] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1;

[0026] Figure 3 is Figure 1 is a structural schematic view of another perspective of the CCS assembly in FIG. 1;

[0027] Figure 4 is Figure 3 is an enlarged view of B in FIG. 1;

[0028] Figure 5 is Figure 3 is an enlarged view of C in FIG. 1;

[0029] Figure 6 is Figure 3 is an enlarged view of D in FIG. 1.

[0030] 100, CCS assembly; 200, bracket; 210, positioning groove; 220, avoiding groove; 300, FFC; 400, main body; 410, first end; 420, second end; 430, main lead; 440, first main lead; 450, second main lead; 451, first part; 452, second part; 500, branch lead; 510, third end; 520, fourth end; 600, busbar; 700, output row; 800, connector; 900, PCB. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 efforts fall within the scope of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower directions of the device in the actual use or working state, and specifically refer to the drawing direction in the drawings; and "inner" and "outer" refer to the contour of the device.

[0032] In order to facilitate understanding of the problem that the width dimension of the second end is small in the related art, the CCS assembly includes a support, an FFC, a busbar and a battery cell, and the FFC is connected to the battery cell through the busbar.

[0033] At present, a plurality of busbars are provided, and the plurality of busbars are sequentially arranged along the length direction of the main body, and in the width direction of the main body, the busbar is arranged on one side of the main body.

[0034] The FFC includes a main body and a plurality of branch conductors, the main body includes a plurality of main conductors sequentially arranged in the width direction of the main body, and in the length direction of the main body, the main body has opposite first and second ends, and the branch conductors are connected to one end of the main conductors close to the second end. The closer to the first end, the shorter the length of the main conductor connected by the branch conductor of the busbar, which makes the width of the main body smaller and smaller in the direction from the first end to the second end, until the width of the second end is equal to the width of one main conductor.

[0035] This makes the bonding area of the second end for bonding to the support smaller, so that the main body is easily separated from the support.

[0036] Therefore, the present application provides a CCS assembly, which aims to make the bonding area of the second end for bonding to the support larger, so that the main body is not easily separated from the support.

[0037] Reference Figures 1 to 6 In an embodiment of the present application, the CCS assembly includes a support 200 and an FFC.

[0038] The FFC includes a main body 400 and a plurality of branch conductors 500, the main body 400 includes a plurality of main conductors 430 sequentially arranged in the width direction of the main body 400, and the plurality of branch conductors 500 are respectively connected to different main conductors 430;

[0039] In the length direction of the main body 400, the main body 400 has opposite first and second ends 410 and 420, in the width direction of the main body 400, the first end 410 includes a plurality of main path conductors 430, and the second end 420 has a size reaching at least two sizes of the main path conductors 430, in the thickness direction of the main body 400, the second end 420 is bonded to the bracket 200 on the side close to the bracket 200.

[0040] It can be understood that, in the width direction of the main body 400, the size of the second end 420 is larger than the size of the second end 420 described in the background art. In this way, the area of the second end 420 close to the bracket 200 is larger, the bonding area of the second end 420 and the bracket 200 is increased, so that the probability of the main body 400 being separated from the bracket 200 can be reduced.

[0041] There are many ways to achieve that the size of the second end 420 reaches at least two sizes of the main path conductors 430 in the width direction of the main body 400. In an embodiment, the plurality of main path conductors 430 includes a first main path conductor 440 and a second main path conductor 450, the first main path conductor 440 extends from the first end 410 to the second end 420, and the second main path conductor 450 includes a first portion 451 and a second portion 452 spaced apart in the length direction of the main body 400, the first portion 451 extends to the first end 410, and the second portion 452 extends to the second end 420, and the first portion 451 is connected to the branch path conductor 500.

[0042] For the convenience of description, the branch path conductor 500 connected to the first main path conductor 440 is defined as a first branch path conductor, and the branch path conductor 500 connected to the second main path conductor 450 is defined as a second branch path conductor. It can be understood that the signal collected by the first branch path conductor can be transmitted to the first end 410 of the main body 400 through the first main path conductor 440, and the signal collected by the second branch path conductor can be transmitted to the first end 410 of the main body 400 through the first portion 451, and the second portion 452 does not participate in the transmission of the signal. However, the second portion 452 plays a role in expanding the size of the second end 420 in the width direction of the main body 400, so that the area of the second end 420 close to the bracket 200 is larger, the bonding area of the second end 420 and the bracket 200 is increased, so that the probability of the main body 400 being separated from the bracket 200 can be reduced. In addition, the space between the first portion 451 and the second portion 452 is also conducive to the lightweight of the FFC. Moreover, it is also convenient to realize the jumper collection of the FFC.

[0043] However, the design is not limited to this, and in some other embodiments, only part of the main path conductors 430 can extend to the second end 420, and part of the main path conductors 430 can not extend to the second end 420; or all the main path conductors 430 can extend to the second end 420.

[0044] In an embodiment, the body 400 has a first side close to the bracket 200 in the thickness direction of the body 400, the branch wire 500 connected by the second main wire 450 is a branch wire 500, the branch wire 500 is arranged between the first side and the bracket 200, the first side is provided with an adhesive area and a non-adhesive area, and the branch wire 500 is at least partially arranged between the non-adhesive area and the bracket 200 in the thickness direction of the body 400, and the adhesive area is adhered to the bracket 200.

[0045] In this way, in the thickness direction of the body 400, the body 400 limits the movement of the branch wire 500 away from the bracket 200 to prevent the branch wire 500 from moving in this direction beyond the first side. That is, the body 400 can prevent the branch wire 500 from being raised and limit the movement space of the branch wire 500. In this way, the occurrence of wear caused by the collision between the branch wire 500 and other components can be reduced. In some other embodiments, the branch wire 500 is arranged on the side of the body 400 away from the bracket 200.

[0046] In an embodiment, the CCS assembly further comprises a busbar 600 for connecting the battery cell, and the branch wire 500 has a third end 510 connected to the second main wire 450 and a fourth end 520 for connecting the busbar 600. It can be understood that the battery cell will expand during operation, and the battery cell will move with the busbar 600 during expansion, so that the busbar 600 has a movement trend close to the body 400 in the thickness direction of the body 400.

[0047] In order to avoid the fourth end 520 of the branch wire 500 from being separated from the busbar 600 during expansion of the battery cell, the branch wire 500 is arranged between the busbar 600 and the first side, and the third end 510 and the fourth end 520 have a height difference in the thickness direction of the body 400. In this way, the fourth end 520 of the branch wire 500 has a movement space close to the body 400 in the thickness direction of the body 400, so that the fourth end 520 can move with the busbar 600 to avoid the fourth end 520 from being separated from the busbar 600.

[0048] In some other embodiments, the length of the branch wire 500 can be greater than the straight-line distance from the third end 510 to the fourth end 520, which allows the branch wire 500 to have more length allowance to cope with the expansion of the battery cell.

[0049] It is worth mentioning that, in an embodiment, the fourth end 520 and the busbar 600 are connected by welding. In this way, the solder joint formed by the fourth end 520 and the busbar 600 can be prevented from being pulled off. In some other embodiments, the fourth end 520 and the busbar 600 are adhered.

[0050] In addition, in an embodiment, the battery cell is configured as a lithium battery cell. Lithium battery cells have many significant advantages, making them an ideal choice for modern electronic devices and electric vehicles and other applications. First, lithium battery cells have high energy density, capable of storing a large amount of electrical energy in a small volume and weight, thereby extending the device's endurance and reducing the burden. Second, they have a low self-discharge rate, maintaining a high level of charge even after long periods of storage. In addition, lithium battery cells have a higher operating voltage, which means that a single battery can meet the voltage requirements of many devices, simplifying power supply design. Furthermore, lithium battery cells have high charging and discharging efficiency and long cycle life, capable of withstanding hundreds or even thousands of charge and discharge cycles without significant loss of capacity. At the same time, they support fast charging technology, greatly reducing charging time. Finally, with technological advances, the safety performance of lithium battery cells is also improving, effectively preventing overcharging, over-discharging, and short-circuiting and other problems through built-in protection circuits and improved materials, ensuring safe use. In summary, lithium battery cells have unparalleled advantages in many fields with their high efficiency, long life, convenience, and safety. In some other embodiments, the battery cell can also be configured as a lead-acid battery cell.

[0051] In an embodiment, the height difference is between 0.1 mm and 1.5 mm. If the height difference is too small, the fourth end 520 has less space to move in the thickness direction of the main body 400, making it easier for the fourth end 520 to come off the busbar 600. If the height difference is too large, the overall size of the CCS assembly in the thickness direction of the main body 400 is larger, which is not conducive to the miniaturization of the CCS assembly. Thus, when the height difference is between 0.1 mm and 1.5 mm, the fourth end 520 has a larger aperture in the thickness direction of the main body 400, making it less likely for the fourth end 520 to come off the busbar 600, and the overall size of the CCS assembly in the thickness direction of the main body 400 is smaller, which is conducive to the miniaturization of the CCS assembly.

[0052] In an embodiment, in the thickness direction of the main body 400, the bracket 200 is provided with a clearance groove 220 on the side close to the FFC, the clearance groove 220 is arranged opposite the non-adhesive area, and the branch lead 500 is at least partially movably arranged in the clearance groove 220. In this way, the branch lead 500 can be prevented from interfering with other components of the CCS when it moves due to the expansion of the battery cell. This is conducive to improving the service life of the FFC.

[0053] In an embodiment, the width of the avoiding groove 220 is between 10mm and 20mm. It can be understood that the battery cell will expand during operation, and the battery cell will move with the busbar 600 during expansion, which makes the busbar 600 possible to move with the fourth end 520 along the width direction of the avoiding groove 220. If the width of the avoiding groove 220 is small, the branch lead 500 is easy to interfere with the groove wall of the avoiding groove 220, so that the fourth end 520 is easy to separate from the busbar 600. If the width of the avoiding groove 220 is large, the structural strength of the support 200 is low. Therefore, when the width of the avoiding groove 220 is between 10mm and 20mm, the fourth end 520 is not easy to separate from the busbar 600, and the structural strength of the support 200 is high.

[0054] In an embodiment, the support 200 is provided with a positioning groove 210 on the side close to the main body 400 in the thickness direction of the main body 400, the main body 400 is arranged in the positioning groove 210, and the main body 400 is bonded in the positioning groove 210. In this way, the efficiency of bonding the main body 400 to the support 200 is improved.

[0055] In an embodiment, the avoiding groove 220 is arranged on the groove bottom wall of the positioning groove 210. When the main body 400 is placed in the positioning groove 210, the branch lead 500 can sink into the avoiding groove 220. It can be understood that the first side is arranged opposite to the groove bottom wall of the positioning groove 210 in the thickness direction of the main body 400, and the bonding area of the first side is used for bonding the groove bottom wall of the positioning groove 210. After the branch lead 500 sinks into the avoiding groove 220, the bonding area can have a high degree of fit with the groove bottom wall of the positioning groove 210, and the connection stability of the bonding area and the groove bottom wall of the positioning groove 210 is high.

[0056] In an embodiment, the width of the main body 400 is between 30mm and 50mm. If the width of the main body 400 is small, the bonding area of the main body 400 and the support 200 will be small, and the connection stability of the main body 400 and the support 200 is low. If the width of the main body 400 is large, the number of the main lead 430 is large, which is easy to cause redundancy and increase the manufacturing cost of the CCS assembly. Therefore, when the width of the main body 400 is between 30mm and 50mm, the connection stability of the main body 400 and the support 200 is high, and the redundancy of the main lead 430 is avoided, which reduces the manufacturing cost of the CCS assembly.

[0057] In an embodiment, the CCS assembly further comprises components such as the output busbar 700, the PCB and the connector 800. The connection relationship and the layout position of the above components can refer to related technologies, but are not limited thereto, and will not be described in detail here.

[0058] In a second aspect, the embodiments of the utility model provide a battery pack, the battery pack includes the CCS subassembly of preceding, this CCS subassembly has adopted all technical schemes of above -mentioned all embodiments, therefore at least has all beneficial effects brought by technical scheme of above -mentioned embodiment, here will not repeat.

[0059] It is worth mentioning that the battery pack is used for supplying power to the power consumption equipment, and the power consumption equipment can be a car, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, a medical device, an electric toy and an electric tool, etc.

[0060] Among them, the car can be a fuel car, a gas car or a new energy car, the new energy car can be a pure electric car, a hybrid car or a range extended car, etc. The spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The medical device includes various detection devices, etc. The electric toy includes a fixed or mobile electric toy, for example, a game machine, an electric car toy, an electric ship toy and an electric plane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer, etc. Here, no limitation is made.

[0061] In a third aspect, the embodiments of the utility model provide a vehicle, the vehicle includes the battery pack, the battery pack adopts all technical schemes of above -mentioned all embodiments, therefore at least has all beneficial effects brought by technical scheme of above -mentioned embodiment, here will not repeat.

[0062] The embodiments of the utility model are introduced in detail above, the principle and implementation mode of the utility model are described by applying specific examples in this paper, the above embodiment is only used for helping understanding the method and core idea of the utility model; at the same time, for the person skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will have the change, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A CCS assembly, characterized by, The CCS assembly comprises: a bracket; and an FFC comprising a main body and a plurality of branch conductors, the main body comprising a plurality of main conductors arranged in sequence in a width direction of the main body, and the plurality of branch conductors being connected to different main conductors, respectively; wherein, in a length direction of the main body, the main body has opposite first and second ends, in the width direction of the main body, the first end comprises a plurality of main conductors, and a size of the second end reaches at least two sizes of the main conductors, and in a thickness direction of the main body, a side of the second end close to the bracket is bonded to the bracket. The plurality of main conductors comprises a first main conductor and a second main conductor, the first main conductor extending from the first end to the second end, and the second main conductor comprising a first portion and a second portion arranged at intervals in the length direction of the main body, the first portion extending to the first end, and the second portion extending to the second end, and the first portion being connected to the branch conductors.

2. The CCS assembly of claim 1, wherein, In the thickness direction of the main body, the main body has a first side close to the bracket, the branch conductors are arranged between the first side and the bracket, the first side is provided with a bonding area and a non-bonding area, and the branch conductors are at least partially arranged between the non-bonding area and the bracket in the thickness direction of the main body, and the bonding area is bonded to the bracket.

3. The CCS assembly of claim 2, wherein, The CCS assembly further comprises a busbar for connecting the battery cells, the branch conductors have a third end connected to the second main conductor and a fourth end for connecting the busbar, the branch conductors are arranged between the busbar and the first side, and the third end and the fourth end have a height difference in the thickness direction of the main body.

4. The CCS assembly of claim 3, wherein, The height difference is between 0.1 mm and 1.5 mm.

5. The CCS assembly of claim 4, wherein, In the thickness direction of the main body, the bracket is provided with a relief groove close to a side of the FFC, the relief groove is arranged opposite to the non-bonding area, and the branch conductors are at least partially movably arranged in the relief groove.

6. The CCS assembly of claim 4, wherein, The groove width of the relief groove is between 10 mm and 20 mm.

7. The CCS assembly of claim 6, wherein, In the thickness direction of the main body, the bracket is provided with a positioning groove close to a side of the main body, the main body is arranged in the positioning groove, and the main body is bonded in the positioning groove.

8. The CCS assembly of claim 6, wherein, The relief groove is opened in a groove bottom wall of the positioning groove.

9. The CCS assembly of claim 8, wherein, The width of the main body is between 30 mm and 50 mm.

10. The CCS assembly of any one of claims 1 to 9, wherein, The CCS assembly comprises any one of claims 1 to 10.

11. A battery pack, characterized by The battery pack comprises claim 11.

12. A vehicle characterized by comprising: ​

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