Battery module acquisition assembly and battery module

Abstract

The utility model provides a battery module acquisition assembly and a battery module. The battery module acquisition assembly comprises a PCB (Printed Circuit Board) arranged on a module bracket at one end of the battery module, and at least two acquisition lines, the PCB is provided with a plurality of first acquisition sheets which are electrically connected with the first busbars at the same end in a one-to-one correspondence manner, and a plug-in unit which is connected with a BMS (Battery Management System); one end of each acquisition line is electrically connected with the PCB, the other end of each acquisition line is provided with a second acquisition sheet, and the second acquisition sheets are respectively connected with the second busbars at the other end of the battery module in a one-to-one correspondence manner. According to the battery module acquisition assembly disclosed by the utility model, the plug-in is connected to the PCB, the first acquisition sheet on the PCB is electrically connected with each first busbar at one end of the battery module, and each second busbar at the other end of the battery module is electrically connected with the PCB through the acquisition line, so that the structure of the battery module acquisition assembly is simplified; the voltage information of the battery cells in the battery module can be collected conveniently, and arrangement and implementation are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a battery module collection component. At the same time, the utility model also relates to a battery module provided with the battery module collection component. Background Art

[0002] Traditional fuel vehicles have become one of the main sources of environmental pollution. Electric vehicles have become an important industry in the development of new energy vehicles due to their energy-saving and environmentally friendly characteristics. As the core component of electric vehicles, the performance of battery packs directly affects the performance of vehicles.

[0003] The BMS (Battery Management System) in the battery pack mainly connects the PCB circuit and wiring harness of the battery module through a plug-in. The male end of the plug-in is welded on the PCB board, and the female terminal is crimped to the wiring harness. The process is complex and there are many connecting parts. It is easy to have problems such as terminal crimping, virtual connection, and foreign matter in the terminal expansion hole, which affects the voltage collection effect of the battery module. Utility Model Content

[0004] In view of this, the utility model aims to provide a battery module collection component to facilitate the collection of voltage information of battery cells and to simplify the connection relationship.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A battery module collection component, comprising a PCB board arranged on a module bracket at one end of a battery module, and at least two collection lines;

[0007] The PCB board is provided with a plurality of first acquisition sheets for electrically connecting to the first bus bars at the same end in a one-to-one correspondence, and a plug-in for connecting to the BMS;

[0008] One end of each of the collection lines is electrically connected to the PCB board, and the other end is provided with a second collection piece, and each of the second collection pieces is respectively connected to the second bus bar at the other end of the battery module in a one-to-one correspondence.

[0009] Further, at least one of the plurality of the first collection pieces and the second collection pieces is provided with a temperature collection portion; and / or,

[0010] The PCB board is provided with through holes for the ends of each acquisition line to pass through;

[0011] The ends of the collection lines extend out of the through holes and are connected to the PCB board by welding.

[0012] Furthermore, protective glue is provided at the welding point between each of the acquisition lines and the PCB board.

[0013] Furthermore, the PCB board is connected to the module bracket by riveting.

[0014] Furthermore, the module bracket is provided with a connecting protrusion, and the PCB board is provided with a connecting hole for the connecting protrusion to pass through;

[0015] The module bracket is connected to the PCB board by thermal riveting through the connecting protrusion extending out of the PCB board.

[0016] Furthermore, the second acquisition chip has a connection portion for electrically connecting to the acquisition line;

[0017] The connecting portion can be wrapped around the end of the acquisition line and connected to the end of the acquisition line by welding.

[0018] Furthermore, the connecting part has a connecting groove, and the collecting wire and the solder are located in the connecting groove and are connected to the connecting part by welding.

[0019] Further, the plug-in is soldered on the PCB board; and / or,

[0020] The first collecting piece is in a "Z" shape.

[0021] Furthermore, the PCB board is provided with an avoidance hole, and at least one of the first collection sheets is electrically connected to the corresponding first bus through the avoidance hole; and / or the first collection sheet and / or the second collection sheet is a nickel sheet.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] The battery module acquisition component of the utility model connects the plug-in to the PCB board, the first acquisition sheet on the PCB board is electrically connected to each first bus bar at one end of the battery module, and each second bus bar at the other end of the battery module is electrically connected to the PCB board through the acquisition line, thereby avoiding the problem of poor connection effect between the acquisition line and the plug-in in the prior art, thereby simplifying the structure of the battery module acquisition component, facilitating the collection of voltage information of the battery cells in the battery module, and facilitating arrangement and implementation.

[0024] In addition, by setting up a temperature collection part, it is convenient to collect the temperature information of the battery module, further improve the collection effect, and facilitate the safety of the battery module; the setting of the through hole on the PCB board is convenient for the end of the collection line to be extended and welded to the PCB board, which is convenient for improving the connection strength between the collection line and the PCB board. By providing protective glue at the welding point between the collection line and the PCB board, it is convenient to improve the protection effect of the welding point between the two, and the protective glue is easy to implement. The PCB board is riveted to the module bracket, which is convenient for realizing the connection between the two. The setting of the connecting protrusion and the connecting hole is not only convenient for the connection of the PCB board on the module bracket, but also convenient for realizing the riveting between the module bracket and the PCB board.

[0025] In addition, the setting of the connecting part on the second acquisition sheet is conducive to welding and connecting with the end of the acquisition line, and has good connection strength. The setting of the connecting groove on the connection part is conducive to the filling of solder, and then it is conducive to improving the welding strength between the connection part and the acquisition line. The plug-in is welded on the PCB board, which is conducive to improving the connection strength between the two; the first acquisition sheet is in a "Z" shape, which is conducive to electrical connection with the corresponding first bus. By setting an avoidance hole on the PCB board, it is conducive to the electrical connection of the first acquisition sheet with the first bus blocked by the PCB board; the setting of the nickel sheet is conducive to improving the accuracy of voltage collection and is convenient for layout and implementation.

[0026] In addition, another object of the present invention is to provide a battery module, on which the battery module collection component as described above is provided.

[0027] The battery module of the utility model is provided with the above battery module collection component, which is beneficial to improving the voltage collection effect of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the battery module acquisition component according to an embodiment of the utility model when in use from a first viewing angle;

[0030] Figure 2 This is a schematic diagram of the structure of the battery module acquisition component according to an embodiment of the utility model when in use at a second viewing angle;

[0031] Figure 3 This is a schematic diagram of the structure of the battery module collection component according to an embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the second acquisition piece according to an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 1. First module bracket; 2. Second module bracket; 3. PCB board; 4. Collection line;

[0035] 100, battery module; 101, connection protrusion; 102, first bus bar;

[0036] 201. second bus bar; 202. connection plate;

[0037] 300, avoidance hole; 301, plug-in; 302, first collection piece; 3021, temperature collection part; 303, connection hole; 304, protective glue;

[0038] 401, second collecting piece; 4011, connecting part; 4012, forming hole; 4013, positioning hole. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to 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, if there are terms such as "first", "second", etc., they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] The present embodiment relates to a battery module collection component, including a PCB board 3 arranged on a module bracket at one end of a battery module 100, and at least two collection lines 4. The PCB board 3 is provided with a plurality of first collection pieces 302 for electrically connecting to each first bus 102 at the same end in a one-to-one correspondence, and a plug-in 301 for connecting to a BMS. One end of each collection line 4 is electrically connected to the PCB board 3, and the other end is provided with a second collection piece 401, and each second collection piece 401 is respectively connected to the second bus 201 at the other end of the battery module 100 in a one-to-one correspondence.

[0043] The battery module acquisition component of the present embodiment connects the plug-in 301 to the PCB board 3, the first acquisition sheet 302 on the PCB board 3 is electrically connected to each first bus 102 at one end of the battery module 100, and each second bus 201 at the other end of the battery module 100 is electrically connected to the PCB board 3 through the acquisition line 4, thereby avoiding the problem of poor connection effect between the acquisition line 4 and the plug-in 301 in the prior art, thereby simplifying the structure of the battery module acquisition component, facilitating the collection of voltage information of the battery cells in the battery module 100, and facilitating the arrangement and implementation, thereby facilitating the improvement of the safety of the battery module 100.

[0044] Based on the above overall introduction, the state of the battery module collection component in use in this embodiment is as follows Figure 1 and Figure 2 As shown in , the structure of the battery module collection component is as follows Figure 3 As shown in . The module support in this embodiment includes a first module support 1 provided at one end of the battery module 100, and a second module support 2 provided at the other end, wherein the PCB board 3 and each first busbar 102 are provided on the first module support 1, and each first busbar 102 is connected between two adjacent battery cells. Each second busbar 201 is provided on the second module support 2 and connected between two adjacent battery cells.

[0045] In order to improve the connection strength between the first module bracket 1 and the second module bracket 2, a plurality of connecting plates 202 are connected between the ends of the two. The connecting plates 202 have a simple structure, are easy to arrange and implement, and have a good connection effect with the two module brackets. In this embodiment, the number of cells in the battery module 100 can be set according to the use requirements.

[0046] Figure 1 In the example, there are four cells in the battery module 100. At this time, there are three first busbars 102 arranged on the first module bracket 1, one of which is electrically connected to the positive output pole of the battery module 100, the second is electrically connected to the negative output pole of the battery module 100, and the third is connected between the total positive output cell at this end and the adjacent cell. There are two second busbars 201 arranged on the second module bracket 2. There are three first collection pieces 302 that are electrically connected to each first busbar 102 in a one-to-one correspondence, and there are two second collection pieces 401 that are electrically connected to each second busbar 201 in a one-to-one correspondence. There are two collection lines 4 that are electrically connected to each second collection piece 401, respectively.

[0047] It should be noted that, in the present embodiment, the number of the first busbar 102 and the second busbar 201 is adaptively increased or decreased according to the number of battery cells in the battery module 100, the number of the first acquisition sheets 302 corresponds to the number of the first busbars 102, and the number of the second acquisition sheets 401 is the same as the number of the second busbars 201 and the acquisition lines 4, so as to ensure that the battery module acquisition component can collect the voltage information of each battery cell in the battery module 100.

[0048] In order to further improve the use effect of the battery module collection component, in this embodiment, at least one of the plurality of first collection pieces 302 and second collection pieces 401 is provided with a temperature collection portion 3021. Figure 3 As shown in FIG, a color gamut temperature acquisition unit 3021 is provided on each of the two first acquisition sheets 302. The temperature acquisition unit 3021 here can be a temperature sensor, etc. Of course, during specific implementation, the position of the temperature acquisition unit 3021 can be determined according to the use requirements.

[0049] As a preferred embodiment, the PCB board 3 is connected to the module bracket by riveting, and the riveting connection between the two is conducive to the connection between the two and is easy to operate and install. In terms of specific structure, the module bracket is provided with a connecting protrusion 101, and the PCB board 3 is provided with a connecting hole 303 for the connecting protrusion 101 to pass through. The module bracket is connected to the PCB board 3 by hot riveting through the connecting protrusion 101 extending out of the PCB board 3. The setting of the connecting protrusion 101 and the connecting hole 303 here is not only conducive to the connection of the PCB board 3 on the module bracket, but also conducive to the riveting between the module bracket and the PCB board 3.

[0050] like Figure 1 and Figure 3 As shown in the figure, in this embodiment, two connecting protrusions 101 are respectively arranged on the first module bracket 1 corresponding to the two ends of the PCB board 3, and each connecting protrusion 101 is columnar to facilitate processing and forming. There are four connecting holes 303 arranged one by one corresponding to the connecting protrusions 101. The PCB board 3 is positioned on the first module bracket 1 by inserting the connecting holes 303 on the connecting protrusion 101 into the corresponding connecting protrusion 101. In the plug-in state, the top end of the connecting protrusion 101 extends out of the PCB board 3, and the protruding part of the connecting protrusion 101 is connected to the PCB board 3 by hot riveting. It can be understood that in specific implementation, the position, number and cross-sectional shape of the connecting protrusion 101 can be adaptively adjusted according to the use requirements, and the connecting hole 303 and the connecting protrusion 101 can be adapted.

[0051] The plug-in 301 in this embodiment is welded on the PCB board 3, which is conducive to improving the connection strength between the two. In addition, the plug-in 301 is electrically connected to each acquisition line 4 through the PCB board 3, and does not need to be directly electrically connected to the acquisition line 4, thereby fundamentally solving the problem of the acquisition line 4 and the plug-in 301 being connected in the prior art and being easily connected.

[0052] like Figure 1 and Figure 2 As shown in the figure, the first collection piece 302 in this embodiment is preferably in a "Z" shape. It has a first part electrically connected to the upper surface of the PCB board 3, a second part electrically connected to the first bus 102, and a middle part vertically connected between the first part and the second part. The first collection piece 302 is preferably in a "Z" shape, which is not only convenient for processing and molding, but also helps to ensure the electrical connection effect between the first collection piece 302 and the first bus 102 and the PCB board 3, thereby ensuring the voltage collection effect.

[0053] In addition, if Figure 1 and Figure 2 As shown in , the PCB board 3 is provided with an avoidance hole 300, and at least one of the first collection pieces 302 is electrically connected to the corresponding first bus 102 through the avoidance hole 300. Here, when there are four battery cells, only one of the first collection pieces 302 is electrically connected to the first bus 102 through the avoidance hole 300. By providing the avoidance hole 300 on the PCB board 3, it is beneficial for the first collection piece 302 to be electrically connected to the first bus 102 blocked by the PCB board 3, thereby facilitating the arrangement of the first collection piece 302 and the collection effect.

[0054] As a preferred embodiment, the PCB board 3 is provided with through holes for the ends of each acquisition line 4 to pass through, and the ends of each acquisition line 4 extend out of the through holes and are connected to the PCB board 3 by welding. Here, the provision of the through holes on the PCB board 3 facilitates the ends of the acquisition lines 4 to be connected to the PCB board 3 by welding after extending out, and helps to improve the connection strength between the acquisition lines 4 and the PCB board 3. Of course, the acquisition lines 4 specifically pass through the through holes through the conductor part and are connected to the PCB board 3 by welding.

[0055] In a specific implementation, one end of each acquisition line 4 connected to the PCB board 3 passes through the through hole from bottom to top, and the end of the acquisition line 4 extends out of the PCB board 3 by a length L between 1 and 2 mm. For example, the extended length L is 1 mm, 1.5 mm or 2 mm, etc., so as to facilitate the welding connection between the acquisition line 4 and the PCB board 3 and have higher connection reliability.

[0056] To ensure the effect of the welding between the PCB board 3 and the acquisition line 4, protective glue 304 is respectively provided at the welding between each acquisition line 4 and the PCB board 3. The protective glue 304 is provided to improve the protective effect of the welding between the two, and the protective glue 304 is easy to implement. Of course, in addition to using the protective glue 304 to protect the two, other structures can also be used to protect the welding, which is conducive to the pasting of protective rubber, etc.

[0057] In order to facilitate the connection between the second collection piece 401 and the corresponding collection line 4, in this embodiment, the second collection piece 401 has a connection part 4011 for electrically connecting to the collection line 4, and the connection part 4011 can be wrapped around the end of the collection line 4 and welded to the end of the collection line 4. The arrangement of the connection part 4011 on the second collection piece 401 is conducive to welding and connecting to the end of the collection line 4, and has good connection strength.

[0058] In terms of specific structure, Figure 2 and Figure 4 As shown in , the connection part 4011 has a connection groove, and the collection line 4 and the solder are located in the connection groove and are connected to the connection part 4011 by welding. The setting of the connection groove here is conducive to the filling of the end of the collection line 4 and the solder, thereby facilitating the improvement of the welding strength between the collection line 4 and the connection part 4011, thereby facilitating the voltage collection effect. In specific implementation, the conductor part and part of the insulating part of the collection line 4 are both located in the connection groove, and are electrically connected to the connection part 4011 through the conductor part.

[0059] In the initial state, the connection groove is "U" shaped. After the collection line 4 and the solder are filled in, the connection part 4011 is squeezed to realize the connection part 4011 wrapping the collection line 4, and then welding can be performed. In addition, a forming hole 4012 and a positioning hole 4013 are provided on the second collection piece 401, wherein the forming hole 4012 is conducive to the processing and forming of the second collection piece 401, and the positioning hole 4013 is conducive to the external equipment to position the second collection piece 401 on the second module bracket 2, thereby facilitating the assembly efficiency of the second collection piece 401.

[0060] In this embodiment, both the first collection sheet 302 and the second collection sheet 401 can be made of nickel sheets, which have a better collection effect and are easy to arrange and implement.

[0061] In this embodiment, the PCB board 3 is used as the main body, and the nickel sheet, the plug-in 301, and the collection line 4 are welded together to form a voltage and temperature collection component of the battery cell module 100. The overall structure is simple, the process is simple, the failure rate is low, and the cost is low.

[0062] In addition, the present embodiment also relates to a battery module 100 , on which the battery module collection component as described above is provided.

[0063] The battery module 100 described in this embodiment is provided with the above battery module collection component, which is conducive to improving the collection effect of the battery module 100. The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery module collection component, characterized in that: It includes a PCB board arranged on a module bracket at one end of the battery module, and at least two acquisition lines; The PCB board is provided with a plurality of first acquisition sheets for electrically connecting to the first bus bars at the same end in a one-to-one correspondence, and a plug-in for connecting to the BMS; One end of each of the collection lines is electrically connected to the PCB board, and the other end is provided with a second collection piece, and each of the second collection pieces is respectively connected to the second bus bar at the other end of the battery module in a one-to-one correspondence.

2. The battery module collection component according to claim 1, characterized in that: At least one of the plurality of the first collecting pieces and the second collecting pieces is provided with a temperature collecting portion; and / or, The PCB board is provided with through holes for the ends of each acquisition line to pass through; The ends of the collection lines extend out of the through holes and are connected to the PCB board by welding.

3. The battery module collection component according to claim 2, characterized in that: Protective glue is provided at the welding points between each of the acquisition lines and the PCB board.

4. The battery module collection component according to claim 1, characterized in that: The PCB board is connected to the module bracket by riveting.

5. The battery module collection component according to claim 4, characterized in that: The module bracket is provided with a connecting protrusion, and the PCB board is provided with a connecting hole for the connecting protrusion to pass through; The module bracket is connected to the PCB board by thermal riveting through the connecting protrusion extending out of the PCB board.

6. The battery module collection component according to claim 1, characterized in that: The second collection chip has a connection portion for electrically connecting to the collection line; The connecting portion can be wrapped around the end of the acquisition line and connected to the end of the acquisition line by welding.

7. The battery module collection assembly according to claim 6, characterized in that: The connecting part has a connecting groove, the collecting wire and the solder are located in the connecting groove and are connected to the connecting part by welding.

8. The battery module collection assembly according to claim 1, characterized in that: The plug-in is soldered on the PCB board; and / or, The first collecting piece is in a "Z" shape.

9. The battery module collection assembly according to any one of claims 1 to 8, characterized in that: The PCB board is provided with an avoidance hole, and at least one of the first acquisition sheets is electrically connected to the corresponding first bus bar through the avoidance hole; and / or, The first collection sheet and the second collection sheet are nickel sheets.

10. A battery module, characterized in that: The battery module is provided with a battery module collection component according to any one of claims 1 to 9.

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