Novel CCS busbar for energy storage battery module

Abstract

The utility model relates to a novel CCS busbar for an energy storage battery module. The novel CCS busbar comprises at least one PCB, a plurality of aluminum bars arranged on the PCB, and at least two insulating films wrapping the PCB and the aluminum bars. And the PCB comprises a nickel sheet connected with the aluminum bar and a thermistor arranged on the nickel sheet. The aluminum bars are arranged on the two sides of the PCB in an equal-size mode. And the aluminum bars are arranged in parallel. A plurality of square mounting openings are formed in the aluminum bar. And the mounting port is provided with a thermistor. The insulating film enables the integrated busbar to form a flexible whole. And the insulating film is provided with a notch vertical to the arrangement direction of the aluminum bars. The notch is arranged to be in an I shape. According to the novel CCS busbar for the energy storage battery module, the thermistor is mounted through the mounting port, so that the temperature of the thermistor on the aluminum bar is measured more accurately; the notches are arranged between the aluminum bars, so that the stress between the aluminum bars, which is contracted and pulled by the insulating film, is released, and the flatness of the whole product is ensured.

Description

Technical Field

[0001] The utility model relates to the field of CCS busbars, in particular to a novel CCS busbar for an energy storage battery module. Background Art

[0002] The CCS busbar for energy storage is a busbar project that integrates signal lines and power transmission. The volume of only one busbar can meet the needs of power transmission and signal lines, saving assembly space and labor costs, and reducing the possibility of line errors. Nowadays, most production lines in high-tech fields have entered the stage of large-scale production, and the requirements for high efficiency, automation, and integration of busbar products are getting higher and higher, and the market demand will gradually increase. The project was established to respond to market competition and expand new market areas.

[0003] There is a multifunctional integrated busbar for power batteries on the existing patent technology website with the authorized public number CN218101623U. A multifunctional integrated busbar for power batteries includes an FPC collection component, multiple conductive plates arranged on the FPC collection component, and two insulating films respectively arranged on both sides of the FPC collection component. The FPC collection component includes an FPC cable, at least one connector arranged on the FPC cable, and multiple nickel sheets arranged on the FPC cable. Each of the nickel sheets is connected to one of the conductive plates. The FPC collection component and the conductive plate are both sandwiched between the two insulating films, so that the insulating film forms the FPC collection component and the conductive plate into a flexible whole. The multifunctional integrated busbar for power batteries is easy to process and has a low production cost. It can solve the problem of uneven flatness between the conductive plate and the battery module core, and can also play a certain buffering role for the vibration generated during the driving of the car.

[0004] However, the integrated busbar cannot solve the problem of uneven insulation film caused by the shape of the aluminum bar, and the setting position of the thermistor is prone to errors in the temperature measurement of the conductive sheet. Utility Model Content

[0005] In view of this, the utility model provides a new CCS busbar for an energy storage battery module to meet the problems of reducing the influence of the aluminum busbar on the flatness of the insulating film and improving the temperature measurement accuracy of the thermistor.

[0006] The energy storage battery module uses a new type of CCS busbar, which includes at least one PCB board, a plurality of aluminum bars arranged on the PCB board, and at least two insulating films wrapping the PCB board and the aluminum bars. The PCB board includes a plurality of nickel sheets connected to the aluminum bars, and a plurality of thermistors arranged on the nickel sheets. The aluminum bars are arranged at equal intervals on both sides of the PCB board, and the plurality of aluminum bars on both sides are arranged in parallel. An installation port is provided on the aluminum bar. The thermistor is provided on the installation port. A plurality of incisions are provided on the insulating film, and the extension direction of the incisions is perpendicular to the direction of arrangement of the aluminum bars. The incisions can release the stress of shrinkage and pulling of the insulating film, so that the insulating film that is warped and curled as a whole after hot pressing and laminating is completely flush with the overlapping surface of the battery cell during installation.

[0007] Furthermore, the PCB board also includes a connector arranged at one end of the PCB board, and a plurality of fuses arranged on the PCB board.

[0008] Furthermore, the aluminum bar is a rounded aluminum plate with a bent protrusion.

[0009] Furthermore, the thermistor is an embedded resistor, and the thermistor is arranged at the center of the installation opening.

[0010] Furthermore, thermally conductive UV glue is filled between the thermistor and the mounting opening.

[0011] Furthermore, a plurality of avoidance openings are arranged on the insulating film.

[0012] Furthermore, the cutout is arranged on the insulating film between adjacent aluminum bars.

[0013] Furthermore, the shape of the incision is I-shaped, and circular holes are provided on both sides of the I-shape.

[0014] Compared with the prior art, the utility model provides a new CCS busbar for an energy storage battery module, in which the mounting port is arranged on the aluminum bar, and by filling a thermally conductive UV glue between the thermistor and the mounting port, the thermistor can directly collect the internal temperature of the aluminum bar, thereby reducing interference and improving the temperature collection accuracy. The cutout is arranged on the insulating film between adjacent aluminum bars. The shape of the cutout is I-shaped, and circular holes are arranged on both sides of the I-shape, so that the cutout can release the stress of the insulating film caused by shrinkage and pulling, so that the insulating film as a whole is flattened after hot pressing and laminating, and then the insulating film can be flush with the overlapping surface of the battery cell when installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A schematic structural diagram of a new CCS busbar for an energy storage battery module provided by the utility model.

[0016] Figure 2 for Figure 1 Structural breakdown diagram. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0018] See also Figure 1 to Figure 2 , which is a schematic diagram of the structure of the new CCS busbar for the energy storage battery module provided by the utility model. The new CCS busbar for the energy storage battery module includes at least one PCB board 10, a plurality of aluminum bars 20 arranged on the PCB board 10, and at least two insulating films 30 wrapping the PCB board 10 and the aluminum bars 20. The new CCS busbar for the energy storage battery module also includes some other functional modules, such as an injection molding device, a molding device, etc., which are well known to those skilled in the art and will not be described in detail here.

[0019] The PCB board 10 includes a connector 11 arranged at one end of the PCB board 10, a plurality of nickel sheets 12 connected to the aluminum bar 20, a plurality of fuses 13 arranged on the PCB board 10, and a plurality of thermistors 14 arranged on the nickel sheets 12. The PCB board 10 is composed of an insulating substrate and printed conductive patterns and explanatory texts engraved thereon. The PCB board 10 can withstand high temperature, high humidity and other environmental changes. By directly mounting circuit components on the PCB board 10, space can be saved and overall performance can be improved, achieving higher integration and more compactness. The PCB board 10 is a general technology and will not be described in detail here.

[0020] The connector 11 is arranged on the PCB board 10 for transmitting current or signal. A plurality of nickel sheets 12 are arranged at the edge of the PBC board, and each of the nickel sheets 12 is connected to the aluminum bar 20 for connecting the PCB board 10 with the aluminum bar 20. The fuse 13 is arranged at the edge of the PBC board. The nickel sheet 12 is on the inner side of the PCB board 10, and the fuse 13 is used to provide system protection when the PBC board is short-circuited due to a fault or misoperation in the later stage. The thermistor 14 is arranged at intervals on the PBC board for collecting the temperature conducted by the PBC board and the ambient temperature in the battery module. The connector 11, the nickel sheet 12, the fuse 13, and the thermistor 14 are all general technologies and will not be described in detail here.

[0021] The aluminum bars 20 are arranged at equal intervals on both sides of the PCB board 10, and the multiple aluminum bars 20 on both sides are arranged in parallel and fixed to the nickel sheet 12 by laser welding. The aluminum bar 20 is a rounded aluminum plate with a bent protrusion. A mounting port 21 is provided on the aluminum bar, and the mounting port 21 is provided with the thermistor 14 to detect the internal temperature of the aluminum bar 20, thereby reducing interference factors and improving the temperature acquisition accuracy. In this embodiment, the shape of the mounting port 21 is set to be rectangular. The thermistor 14 uses an embedded resistor. It is conceivable that the mounting port 21 can also be set to be circular according to actual needs. The thermistor 14 is set at the center of the mounting port 21. The thermistor 14 can measure the temperature of the aluminum bar 20 more accurately. The thermal conductive UV glue is filled between the thermistor 14 and the mounting port 21, so that the thermistor 14 is insulated from the aluminum bar 20. It is a general technology and will not be repeated here.

[0022] The insulating film 30 is provided with a plurality of cutouts 31 and a plurality of avoidance openings 32. The extension direction of the cutouts 31 is perpendicular to the arrangement direction of the aluminum bars 20. In the present embodiment, the shape of the cutouts 31 is I-shaped, and circular holes are provided on both sides of the I-shaped, so that the cutouts 31 can reduce the occupied area on the insulating film 30 while releasing the pressure, while ensuring the stability of the shape of the cutouts 31. The cutouts 31 are provided on the insulating film 30 between adjacent aluminum bars 20, so that the cutouts 31 can release the stress of the shrinkage and pulling of the insulating film 30, so that the insulating film 30 that is warped and bent as a whole after hot pressing and laminating is completely flush with the overlapping surface of the battery cell during installation. The avoidance openings 32 are used to set openings according to the shapes of the aluminum bars 20, the PCB board 10 and other parts provided on the insulating film 30, so that they can overlap with other equipment through the insulating film 30. The insulating film 30 positions the aluminum bar 20 and the PCB board 10 through a special mold and presses them into one in a vacuum hot press, so that the energy storage battery module uses the new CCS busbar to form a flexible whole.

[0023] Compared with the prior art, the utility model provides a new CCS busbar for an energy storage battery module, in which the mounting port 21 is arranged on the aluminum bar 20, and the thermally conductive UV glue is filled between the thermistor 14 and the mounting port 21, so that the thermistor 14 can directly collect the internal temperature of the aluminum bar 20, thereby reducing interference and improving the temperature collection accuracy. The cutout 31 is arranged on the insulating film 30 between adjacent aluminum bars 20. The cutout 31 is in the shape of an I, and circular holes are arranged on both sides of the I, so that the cutout 31 can release the stress of the shrinkage and pulling of the insulating film 30, so that the insulating film 30 that is warped and curled as a whole is flattened after hot pressing and laminating, and then the insulating film 30 can be flush with the overlapping surface of the battery cell when installed.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A new CCS busbar for energy storage battery module, characterized in that: The new CCS busbar for the energy storage battery module includes at least one PCB board, a plurality of aluminum bars arranged on the PCB board, and at least two insulating films wrapping the PCB board and the aluminum bars. The PCB board includes a plurality of nickel sheets connected to the aluminum bars, and a plurality of thermistors arranged on the nickel sheets. The aluminum bars are arranged at equal intervals on both sides of the PCB board, and the plurality of aluminum bars on both sides are arranged in parallel. A mounting port is provided on the aluminum bar, and the mounting port is provided with the thermistor. A plurality of incisions are provided on the insulating film, and the extending direction of the incisions is perpendicular to the arrangement direction of the aluminum bars. The incisions can release the stress of shrinkage and pulling of the insulating film, so that the insulating film is completely flush with the overlapping surface of the battery cell when installed.

2. The new CCS busbar for the energy storage battery module according to claim 1, characterized in that: The PCB board also includes a connector arranged at one end of the PCB board and a plurality of fuses arranged on the PCB board.

3. The new CCS busbar for the energy storage battery module according to claim 1, characterized in that: The aluminum bar is a rounded aluminum plate with bent protrusions.

4. The new CCS busbar for the energy storage battery module according to claim 1, characterized in that: The thermistor is an embedded resistor and is arranged at the center of the mounting opening.

5. The new CCS busbar for the energy storage battery module according to claim 1, characterized in that: Thermally conductive UV glue is filled between the thermistor and the mounting opening.

6. The new CCS busbar for the energy storage battery module according to claim 1, characterized in that: A plurality of avoidance openings are arranged on the insulating film.

7. The new CCS busbar for the energy storage battery module according to claim 1, characterized in that: The cutout is provided on the insulating film between adjacent aluminum bars.

8. The new CCS busbar for the energy storage battery module according to claim 1, characterized in that: The shape of the incision is I-shaped, and round holes are arranged on both sides of the I-shape.

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