Acquisition module and battery pack

Abstract

The utility model provides an acquisition module and a battery pack. Wherein the acquisition module comprises an acquisition assembly which comprises a circuit board assembly and an acquisition line group used for acquiring the information of the battery cell, and the circuit board assembly is electrically connected to the output end of the acquisition line group; and a battery management component; wherein the battery management assembly is close to the output end of the acquisition line group, and the circuit board assembly is directly and electrically connected to the battery management assembly through the connector. According to the utility model, the circuit board assembly is directly and electrically connected with the battery management assembly, so that an original low-voltage wire harness for connecting the circuit board assembly and the battery management assembly is omitted, the space occupancy rate inside the acquisition module can be reduced, and meanwhile, the production cost of the acquisition module is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a collection module and a battery pack. Background Art

[0002] Currently, the common battery acquisition module is connected to the battery management component through a low-voltage wiring harness, thereby realizing information transmission between the battery acquisition module and the battery management component. However, due to the existence of the low-voltage wiring harness, it will firstly lead to a large internal space occupancy rate of the battery and secondly will lead to increased production costs. Utility Model Content

[0003] The embodiments of the present utility model provide a collection module and a battery pack, which can solve the above-mentioned problems.

[0004] In a first aspect, an embodiment of the present utility model provides a collection module, which includes:

[0005] A collection component, including a circuit board component and a collection line group for collecting information of the battery cell, the circuit board component is electrically connected to the output end of the collection line group; and

[0006] Battery management components;

[0007] The battery management component is close to the output end of the acquisition line group, and the circuit board component is directly electrically connected to the battery management component through a connector.

[0008] In one embodiment, the circuit board assembly includes a plurality of circuit boards, the plurality of circuit boards include a first circuit board and a second circuit board, the acquisition line group includes an acquisition line, the first circuit board is electrically connected to the acquisition line, the second circuit board is flexibly electrically connected to the first circuit board, the battery management assembly includes a battery management slave board, the first circuit board and the second circuit board are both electrically connected to at least one and at most two battery management slave boards.

[0009] In one embodiment, the circuit board assembly includes a plurality of circuit boards, the plurality of circuit boards include a third circuit board and a fourth circuit board, the acquisition line group includes two acquisition lines, the third circuit board and the fourth circuit board are electrically connected to the two acquisition lines one by one, respectively, and the third circuit board is electrically connected to the fourth circuit board in a flexibly manner, the battery management assembly includes a battery management slave board, the third circuit board and the fourth circuit board are electrically connected to corresponding battery management slave boards, and at least one of the third circuit board and the fourth circuit board is electrically connected to two battery management slave boards.

[0010] In one embodiment, the acquisition component further includes a plurality of flexible connection lines, each of which is electrically connected between two corresponding adjacent circuit boards.

[0011] In one embodiment, each flexible connecting line includes a bent portion.

[0012] In one embodiment, the acquisition line comprises a bent portion arranged in a bent manner.

[0013] In one embodiment, the acquisition module also includes a fixing assembly, which includes a plurality of fixing parts and a plurality of protective parts; wherein each fixing part is fixed to the circuit board of the corresponding circuit board assembly to enclose a limited space, and each protective part is arranged in the corresponding limited space and covers the electrical connection between the corresponding acquisition line group and the corresponding circuit board.

[0014] In one embodiment, each fixing member includes a fixing portion and a limiting portion that are interconnected, the fixing portion is fixed to the circuit board, and the middle portion of the limiting portion is hollowed out so that the limiting portion and the circuit board form a limiting space; wherein the side wall of the limiting portion is provided with a hole and / or groove for the collection line of the collection line group to extend into the limiting space.

[0015] In one embodiment, each circuit board of the circuit board assembly is located on the battery management slave board of the corresponding battery management assembly and includes a protrusion; each connector is electrically connected between the protrusion of the corresponding circuit board and the corresponding battery management slave board; wherein the connector includes clamps located at both ends for fixing the protrusion.

[0016] In a second aspect, an embodiment of the present invention provides a battery pack, which includes the acquisition module of the first aspect.

[0017] In one embodiment, the battery pack further comprises a support plate close to the output end of the collection line group, a buffer is provided on the top of the support plate to support the circuit board assembly, and the battery management assembly is close to the side of the support plate.

[0018] The utility model provides an acquisition module and a battery pack. By arranging the battery management component close to the output end of the acquisition line group, the space design of the acquisition module is saved, and the circuit board component and the battery management component are directly electrically connected through a connector, eliminating the low-voltage wire harness originally used to connect the two, thereby reducing the production cost of the acquisition module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of the acquisition module provided by the embodiment of the utility model;

[0021] Figure 2 yes Figure 1 An enlarged schematic diagram of part A;

[0022] Figure 3 It is a schematic diagram of the connection structure of the acquisition line, the flexible connection line, the circuit board, and the battery management slave board of the acquisition module provided by the embodiment of the utility model;

[0023] Figure 4 yes Figure 3 An enlarged schematic diagram of part B;

[0024] Figure 5 yes Figure 3 The structural diagram of the acquisition line in FIG.

[0025] Figure 6 It is a schematic diagram of the connection structure of the acquisition line, the fixing component and the circuit board of the acquisition module provided by the embodiment of the utility model;

[0026] Figure 7 yes Figure 6 A schematic diagram of the structure of a fixing member of a fixing assembly;

[0027] Figure 8 It is a schematic diagram of the structure of the connection between the circuit board of the acquisition module and the battery management slave board provided by the embodiment of the utility model;

[0028] Fig. 9 It is a partial structural schematic diagram of a battery pack provided by an embodiment of the utility model;

[0029] Explanation of the reference numerals: 1000, acquisition module; 1002, battery management component; 1004, acquisition line group; 1005, circuit board assembly; 1006, circuit board; 1007, battery management slave board; 1008, flexible connecting line; 1009, bending portion; 1010, acquisition line; 1011, fixing component; 1012, fixing member; 1014, fixing portion; 1015, limiting portion; 2000, battery pack; 1016, bending portion; 1017, conductive contact sheet; 1018, protrusion; 1019, connector; 1020, support plate; 1021, buffer. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0031] In the related art, the acquisition module includes: an acquisition component, a battery management component, and a low-voltage wiring harness electrically connected therebetween. The presence of the low-voltage wiring harness will increase the internal space occupancy rate of the acquisition module and also increase the overall production cost of the acquisition module. Those skilled in the art will understand that the above application scenario is only one of the application scenarios of the present application solution and does not constitute a limitation on the application scenario of the present application solution.

[0032] In order to solve the problems in the above application scenarios, the embodiment of the present application provides a collection module 1000. Figure 1 as well as Figure 2 , Figure 1 is a schematic diagram of the structure of the acquisition module 1000 provided in an embodiment of the utility model, Figure 2 yes Figure 1 The enlarged schematic diagram of part A of the embodiment of the present invention is shown in FIG. The acquisition module 1000 includes: an acquisition component and a battery management component 1002. The acquisition component 1005 and the acquisition line group 1004 for acquiring information of the battery cell are included, and the circuit board component 1005 is electrically connected to the output end of the acquisition line group 1004 through the connector 1019. The battery management component 1002 is close to the output end of the acquisition line group 1004, and the circuit board component 1005 is directly electrically connected to the battery management component 1002 through the connector 1019. Compared with the related art, the present embodiment omits the low-voltage wiring harness originally used to connect the two by directly electrically connecting the circuit board component 1005 to the battery management component 1002, so that the application scheme can reduce the space occupancy rate inside the acquisition module 1000, and at the same time reduce the production cost of the acquisition module 1000.

[0033] In some embodiments, the circuit board assembly 1005 includes multiple circuit boards 1006, the multiple circuit boards 1006 include a first circuit board and a second circuit board, the acquisition line group 1004 includes an acquisition line 1010, the first circuit board is electrically connected to the acquisition line 1010, the second circuit board is flexibly electrically connected to the first circuit board, the battery management component 1002 includes a battery management slave board 1007, and the first circuit board and the second circuit board are both electrically connected to at least one and at most two battery management slave boards 1007.

[0034] Compared with the related art that uses one circuit board and electrically connects multiple battery management slave boards through multiple connectors, this embodiment designs the original one circuit board into a first circuit board and a second circuit board, that is, multiple circuit boards, so that the first circuit board and / or the second circuit board only need to connect a smaller number of connectors 1019 and battery management slave boards 1007, which greatly reduces the difficulty of the production and manufacturing process of the circuit board. And the first circuit board and the second circuit board are both electrically connected to at least one and at most two battery management slave boards 1007. When the battery cell information that needs to be processed by a battery management slave board 1007 electrically connected to the first circuit board and / or the second circuit board is greater than the battery cell information that the battery management slave board 1007 can process, the first circuit board and / or the second circuit board can transmit the excess battery cell information to other battery management slave boards 1007 electrically connected to the first circuit board and / or the second circuit board for processing.

[0035] In some embodiments, the circuit board assembly 1005 includes multiple circuit boards 1006, the multiple circuit boards 1006 include a third circuit board and a fourth circuit board, the acquisition line group 1004 includes two acquisition lines 1010, the third circuit board and the fourth circuit board are electrically connected to the two acquisition lines 1010 respectively, and the third circuit board is flexibly electrically connected to the fourth circuit board, the battery management component 1002 includes a battery management slave board 1007, the third circuit board and the fourth circuit board are electrically connected to the corresponding battery management slave boards 1007, and at least one of the third circuit board and the fourth circuit board is electrically connected to the two battery management slave boards 1007.

[0036] The third circuit board and the fourth circuit board in this embodiment are electrically connected to different battery management slave boards 1007 respectively, and also include electrically connecting at least one battery management slave board 1007 to the third circuit board and the fourth circuit board respectively. When the battery cell information that needs to be processed by the battery management slave board 1007 connected to the third circuit board or the fourth circuit board is greater than the battery cell information that can be processed by the battery management slave board 1007, the excess battery cell information can be transmitted from the third circuit board or the fourth circuit board to the battery management slave board 1007 connected to the third circuit board and the fourth circuit board for processing.

[0037] In some embodiments, the plurality of circuit boards 1006 are electrically connected to each other to achieve information transmission between adjacent circuit boards 1006 .

[0038] Further, in some embodiments, reference may be made to Figure 3 and Figure 4 , Figure 3 It is a schematic diagram of the connection structure of the acquisition line 1010, the flexible connection line 1008, the circuit board 1006, and the battery management slave board 1007 of the acquisition module 1000 provided in an embodiment of the utility model. Figure 4 yes Figure 3 The above-mentioned acquisition component also includes a plurality of flexible connecting wires 1008, each of which is electrically connected between two corresponding adjacent circuit boards 1006. In this embodiment, by connecting two adjacent circuit boards 1006 with the flexible connecting wires 1008, the situation that the entire circuit boards 1006 cannot be connected due to manufacturing tolerance is avoided, and the information transmission between the two adjacent circuit boards 1006 can be realized through the flexible connecting wires 1008.

[0039] In some embodiments, each flexible connection line 1008 includes a bending portion 1009 that is bent. The bending angle of the bending portion 1009 is maintained so that the flexible connection line 1008 will not be excessively bent, resulting in damage to the body of the flexible connection line 1008. At the same time, the remaining portion of the bending portion 1009 except for one end connected to the circuit board 1006 does not contact the circuit board 1006, so as to prevent the flexible connection line 1008 from rubbing against the circuit board 1006 during vibration, thereby causing damage to the flexible connection line 1008. Specifically, the bending angle of the bending portion 1009 is 110°. It can be understood that the above examples are only for the purpose of more clearly and comprehensively demonstrating the core ideas and methods of the utility model, so as to better understand the implementation methods of the utility model, and are by no means intended to limit the scope of the utility model. Any obvious modifications or equivalent substitutions made without departing from the essence of the idea of ​​the utility model should be deemed to be within the scope of protection of the utility model.

[0040] The flexible connection line 1008 in this embodiment includes a bending portion 1009. Due to the existence of the bending portion 1009, the length of the flexible connection line 1008 connected between two adjacent circuit boards 1006 is greater than the shortest distance between the two adjacent circuit boards 1006. When the acquisition module 1000 causes the distance between the two adjacent circuit boards 1006 to change during the vibration process, the flexible connection line 1008 located between the two adjacent circuit boards 1006 is expanded and contracted to ensure the stability of information transmission between the two adjacent circuit boards 1006. When the interval between the two adjacent circuit boards 1006 is inconsistent due to manufacturing tolerances or other factors, the bending portion 1009 can be expanded and contracted to meet different interval requirements.

[0041] In some embodiments, reference may be made to Figure 2 , Figure 3 and Figure 5 , Figure 5 yes Figure 3 The structural diagram of the collection line 1010 in FIG. The collection line group 1004 includes two opposite collection lines 1010, and two circuit boards 1006 located at two ends of the plurality of circuit boards 1006 are electrically connected to the two collection lines 1010 respectively. Specifically, one end of the collection line 1010 close to the circuit board 1006 includes a plurality of conductive contacts 1017, and the plurality of conductive contacts 1017 are welded together with the circuit board 1006. The collection line 1010 includes a bent portion 1016, and by extending and retracting the bent portion 1016, it is possible to ensure that information transmission can still be performed when the distance between the collection module 1000 and the circuit board 1006 changes due to vibration or other reasons. The bending portion 1016 is similar to the above-mentioned bending portion 1009, and its bending angle is maintained so that the collection line 1010 will not be excessively bent to cause damage to the line body of the collection line 1010. At the same time, except for the end of the bending portion 1016 connected to the circuit board 1006, the rest of the bending portion 1016 does not contact the circuit board 1006 to prevent the collection line 1010 from rubbing against the circuit board 1006 during vibration, thereby causing damage to the collection line 1010.

[0042] In some embodiments, reference may be made to Figure 2 , Figure 6 as well as Figure 7 , Figure 6 1 is a schematic diagram of the connection structure of the acquisition line 1010, the fixing component 1011 and the circuit board 1006 of the acquisition module 1000 provided in an embodiment of the utility model. Figure 7 yes Figure 6The above-mentioned acquisition module 1000 also includes a fixing component 1011, and the fixing component 1011 includes a plurality of fixing components 1012 and a plurality of protective components (not shown in the figure). Each fixing component 1012 is fixed to the circuit board 1006 of the corresponding circuit board assembly 1005 to enclose a limiting space, and each protective component is arranged in the corresponding limiting space and covers the electrical connection between the corresponding acquisition line group 1004 and the corresponding circuit board 1006. In a specific embodiment, the above-mentioned protective component is foam and is located in the rectangular limiting space to cover the welding point between the acquisition line 1010 and the circuit board 1006. In this embodiment, a fixing member 1012 fixed on the circuit board 1006 is used to form a limiting space with the circuit board 1006, and a protective member arranged in the limiting space is used to cover the electrical connection between the acquisition line 1010 and the circuit board 1006, so that the connection between the acquisition line 1010 and the circuit board 1006 is more stable, and at the same time, the electrical connection between the acquisition line 1010 and the circuit board 1006 can be protected to prevent it from being scratched and causing the electrical connection between the acquisition line 1010 and the circuit board 1006 to be interrupted.

[0043] In some embodiments, each fixing member 1012 includes a fixing portion 1014 and a limiting portion 1015 connected to each other, the fixing portion 1014 is fixed to the circuit board 1006, and the middle of the limiting portion 1015 is hollowed out so that the limiting portion 1015 and the circuit board 1006 form a limiting space. Among them, the side wall of the limiting portion 1015 is provided with a hole and / or a groove for the collection line 1010 of the collection line group 1004 to extend into the limiting space. Specifically, the fixing portion 1014 can be fixed on the circuit board 1006 through a knob, and a rectangular limiting space is formed between the limiting portion 1015 and the circuit board 1006, and one end of the collection line 1010 close to the circuit board 1006 extends into the rectangular limiting space. It should be noted that the present application does not limit the fixing method of the fixing part 1012, the shape of the limiting space and the material of the protective part. The above examples are only for more clearly and comprehensively demonstrating the core ideas and methods of the present utility model, so as to better understand the implementation methods of the present utility model, and are by no means intended to limit the scope of the present utility model. Any obvious modifications or equivalent substitutions made without departing from the essence of the present utility model should be deemed to be within the scope of protection of the present utility model.

[0044] This embodiment utilizes the fixing portion 1014 and the limiting portion 1015 in the fixing member 1012, so that the fixing member 1012 can be fixed on the circuit board 1006, and at the same time form a limiting space with the circuit board 1006, and combined with the protective member arranged in the limiting space, the protective member covers the electrical connection between the collection line 1010 and the circuit board 1006, thereby enhancing the stability of the connection between the collection line 1010 and the circuit board 1006.

[0045] In some embodiments, reference may be made to Figure 8 , Figure 8 1 is a schematic diagram of the structure of the connection between the circuit board 1006 of the acquisition module 1000 and the battery management slave board 1007 provided in the embodiment of the utility model. Each circuit board 1006 of the circuit board assembly 1005 is located on the battery management slave board 1007 of the corresponding battery management assembly 1002, and includes a protrusion 1018. The battery management assembly 1002 also includes a plurality of connectors 1019, each connector 1019 is electrically connected between the protrusion 1018 of the corresponding circuit board 1006 and the corresponding battery management slave board 1007. Among them, the protrusion 1018 is directly electrically connected to the corresponding connector 1019; the connector 1019 includes a clamp located at both ends for fixing the protrusion 1018. Specifically, the connector 1019 includes a male head and a female head, and the male head is arranged on the protruding portion 1018, and the female head is arranged on the corresponding battery management slave board 1007. The male head of the connector 1019 is plugged and fixed with the female head of the connector 1019, so that the protruding portion 1018 is connected and fixed with the battery management slave board 1007. At the same time, the circuit board 1006 is electrically connected to the battery management slave board 1007 through the connector 1019. Compared with the related art, the present application scheme omits the low-voltage harness for connecting the circuit board 1006 and the battery management slave board 1007, reduces the space occupancy rate inside the acquisition module 1000, and reduces the production cost of the acquisition module 1000.

[0046] The embodiment of the utility model provides a collection module 1000. Compared with the related art of connecting the circuit board 1006 with the battery management board 1007 using a low-voltage wiring harness, the present application scheme directly electrically connects the circuit board assembly 1005 to the battery management assembly 1002, thereby eliminating the low-voltage wiring harness originally used to connect the two. This enables the application scheme to reduce the space occupancy rate inside the collection module 1000 and reduce the production cost of the collection module 1000.

[0047] The embodiment of the utility model further provides a battery pack 2000, comprising the above-mentioned acquisition module 1000. The battery pack 2000 has all the advantages of the above-mentioned acquisition module 1000, which will not be described in detail here.

[0048] Please refer to Fig. 9 , Fig. 91 is a partial structural diagram of a battery pack 2000 provided in an embodiment of the utility model. In some embodiments, the battery pack 2000 further includes a support plate 1020 near the output end of the acquisition line group 1004, a buffer 1021 is provided on the top of the support plate 1020 to support the circuit board assembly 1005, and the battery management assembly 1002 is close to the side of the support plate 1020, so that the space utilization rate of the battery pack 2000 can be improved, and it is convenient to install the battery management assembly 1002 on the circuit board 1006 of the circuit board assembly 1005.

[0049] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A collection module, characterized in that: include: A collection component, including a circuit board component and a collection line group for collecting information of the battery cell, wherein the circuit board component is electrically connected to an output end of the collection line group; as well as Battery management components; Wherein, the battery management component is close to the output end of the acquisition line group, and the circuit board component is directly electrically connected to the battery management component through a connector.

2. The acquisition module according to claim 1, characterized in that: The circuit board assembly includes a plurality of circuit boards, the plurality of circuit boards include a first circuit board and a second circuit board, the acquisition line group includes an acquisition line, the first circuit board is electrically connected to the acquisition line, the second circuit board is flexibly electrically connected to the first circuit board, the battery management assembly includes a battery management slave board, the first circuit board and the second circuit board are both electrically connected to at least one and at most two of the battery management slave boards.

3. The acquisition module according to claim 1, characterized in that: The circuit board assembly includes a plurality of circuit boards, the plurality of circuit boards include a third circuit board and a fourth circuit board, the acquisition line group includes two acquisition lines, the third circuit board and the fourth circuit board are electrically connected to the two acquisition lines one by one, respectively, and the third circuit board is electrically connected to the fourth circuit board in a flexibly manner, the battery management assembly includes a battery management slave board, the third circuit board and the fourth circuit board are both electrically connected to the corresponding battery management slave boards, and at least one of the third circuit board and the fourth circuit board is electrically connected to two of the battery management slave boards.

4. The acquisition module according to claim 2 or 3, characterized in that: The acquisition component also includes a plurality of flexible connecting wires, each of which is electrically connected between two corresponding adjacent circuit boards.

5. The acquisition module according to claim 4, characterized in that: Each of the flexible connecting lines includes a bent portion.

6. The acquisition module according to claim 2 or 3, characterized in that: The collection line includes a bent portion that is bent.

7. The acquisition module according to claim 1, characterized in that: It also includes a fixing assembly, which includes a plurality of fixing parts and a plurality of protective parts; wherein each of the fixing parts is fixed to the corresponding circuit board of the circuit board assembly to enclose a limited space, and each of the protective parts is arranged in the corresponding limited space and covers the electrical connection between the corresponding collection line group and the corresponding circuit board.

8. The acquisition module according to claim 7, characterized in that: Each of the fixing parts includes a fixing portion and a limiting portion that are interconnected, the fixing portion is fixed to the circuit board, and the middle portion of the limiting portion is hollowed out so that the limiting portion and the circuit board form the limiting space; wherein the side wall of the limiting portion is provided with a hole and / or groove for the collection line of the collection line group to extend into the limiting space.

9. The acquisition module according to claim 1, characterized in that: Each circuit board of the circuit board assembly is located on the corresponding battery management slave board of the battery management assembly and includes a protrusion; each connector is electrically connected between the protrusion of the corresponding circuit board and the corresponding battery management slave board; wherein the connector includes clamps located at both ends for fixing the protrusion.

10. A battery pack, characterized in that: The invention comprises the acquisition module described in any one of claims 1 to 9.

11. The battery pack according to claim 10, characterized in that: It also includes a support plate close to the output end of the collection line group, a buffer is provided on the top of the support plate to support the circuit board assembly, and the battery management assembly is close to the side of the support plate.

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