Battery pack

Abstract

The utility model provides a battery pack, and relates to the technical field of batteries. According to the battery pack provided by the utility model, the shell is provided with the first opening, the second opening and the third opening, the first opening is sealed by the corresponding third acquisition component, and the second opening and the third opening are sealed by the first acquisition component and the second acquisition component. Therefore, compared with the prior art, the battery pack provided by the invention has the advantages that the original side plate on the outer side is removed, and the BMS is adopted as the side plate, so that the volume utilization rate of the battery pack is favorably improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack. Background Art

[0002] With the continuous technological innovation of electric vehicle batteries in the new energy industry, the requirements for the internal volume utilization of the battery pack are getting higher and higher, and the requirements for the installation inside the battery pack are also getting higher and higher. In the prior art, the common installation solution inside the battery pack is to assemble the BDU (Battery Energy Distribution Unit) and BMS (Battery Management System) as separate modules. This installation solution results in more internal wiring harnesses in the battery pack, making the design and assembly more complicated. Utility Model Content

[0003] In view of this, the present application provides a battery pack, the purpose of which is to solve the above technical problems to a certain extent.

[0004] According to an embodiment of the present application, a battery pack is provided, the battery pack comprising:

[0005] BDU;

[0006] A BMS, wherein the BMS comprises a first collecting component, a second collecting component and a third collecting component, wherein the first collecting component, the second collecting component and the third collecting component are arranged outside the BDU;

[0007] a housing connected to the first collecting member, the second collecting member and the third collecting member, so as to be arranged together with the first collecting member, the second collecting member and the third collecting member on the outside of the BDU, the housing having a first opening in a first direction and a second opening and a third opening opposite to each other in a second direction;

[0008] Wherein, the first collecting member and the second collecting member are arranged opposite to each other in the second direction, and the first collecting member and the second collecting member are both connected to the housing to respectively close the second opening and the third opening;

[0009] Wherein, the third collecting member and the shell are opposite to each other in a first direction to close the first opening; the second direction intersects with the first direction;

[0010] Wherein, the first collecting component and the second collecting component are both electrically connected to the third collecting component.

[0011] Preferably, the BDU includes a flexible circuit board, and the flexible circuit board is electrically connected to at least one of the first collecting member, the second collecting member, and the third collecting member, so that the BDU is communicatively connected to the BMS.

[0012] Preferably, the flexible circuit board extends along a side of at least one of the first collecting member, the second collecting member and the third collecting member.

[0013] Preferably, the flexible circuit board includes a first connection portion and a second connection portion, the first connection portion extends along a side of the first collecting member, and the second connection portion extends along a side of the second collecting member.

[0014] Preferably, the flexible circuit board further includes a main body portion, the first connecting portion and the second connecting portion are respectively connected to two ends of the main body portion, and the main body portion extends along the inner side of the shell.

[0015] Preferably, the shell includes two accommodating parts respectively arranged corresponding to the first collecting member and the second collecting member, and the first collecting member and the second collecting member are respectively limited by the two accommodating parts to respectively close the second opening and the third opening.

[0016] Preferably, each of the accommodating portions includes a guide portion extending along the first direction, and the first collecting member and the second collecting member are configured to enter the interior of the respective corresponding accommodating portion via the guidance of the respective corresponding guide portion, and the first direction is perpendicular to the second direction.

[0017] Preferably, the housing further comprises a first wall portion and a second wall portion which are opposite to each other in the third direction, and the first wall portion and the second wall portion are both arranged around the outer side of the BDU;

[0018] The two accommodating portions are respectively connected to two sides of the first wall portion in the second direction, and the two accommodating portions are respectively connected to two sides of the second wall portion in the second direction, and the second direction is perpendicular to the third direction.

[0019] Preferably, the first collecting member and the second collecting member are both plugged into the third collecting member to be electrically connected to the third collecting member.

[0020] Preferably, the BDU includes electrical components, and the electrical components included in the BDU are exposed in a space surrounded by the first collecting component, the second collecting component and the third collecting component.

[0021] According to the battery pack provided by the present application, the shell has a first opening, a second opening and a third opening, the first opening is closed by the corresponding third collecting member, and the second opening and the third opening are closed by the first collecting member and the second collecting member. In this way, the battery pack provided by the present application is equivalent to removing the original side plate on the outside and using the BMS as the side plate, which is conducive to improving the volume utilization of the battery pack.

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram showing an exploded view of a portion of the structure of a battery pack provided according to an embodiment of the present application;

[0025] Figure 2 A schematic diagram showing an exploded view of another part of the structure of a battery pack provided according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram showing a three-dimensional diagram of a partial structure of a battery pack provided according to an embodiment of the present application;

[0027] Figure 4 A schematic diagram showing an exploded view of a portion of the structure of a battery pack provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a three-dimensional diagram of a battery pack provided according to an embodiment of the present application is shown.

[0029] Reference numerals:

[0030] 100-BDU; 110-electrical component; 111-flexible circuit board; 111a-first connecting part; 111b-main body; 112-internal components;

[0031] 200-BMS; 210-first collecting component; 220-second collecting component; 230-third collecting component;

[0032] 300-housing; 310-accommodating portion; 311-guiding portion; 320-first wall portion; 330-second wall portion; 340-first opening; 350-second opening; 360-third opening;

[0033] F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0034] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] According to the battery pack provided in the embodiment of the present application, the following will be combined with Figures 1 to 5 Describe the structure and working principle of the battery pack in detail.

[0039] The battery pack provided according to the embodiment of the present application includes a BDU100, a BMS200 and a housing 300. Among them, the BMS200 includes a first collection component 210, a second collection component 220 and a third collection component 230, and the first collection component 210, the second collection component 220 and the third collection component 230 are arranged outside the BDU100. The housing 300 is connected to some of the first collection components 210, the second collection component 220 and the third collection component 230, so as to be arranged together with the first collection component 210, the second collection component 220 and the third collection component 230 outside the BDU100, and the housing 300 has a first opening 340 in the first direction F1 and a second opening 350 and a third opening 360 opposite to each other in the second direction F2.

[0040] In an embodiment, the first collecting member 210 and the second collecting member 220 are arranged opposite to each other in the second direction F2, and the first collecting member 210 and the second collecting member 220 are both connected to the housing 300 to respectively close the second opening 350 and the third opening 360. In an embodiment, the third collecting member 230 and the housing 300 are opposite to each other in the first direction F1 to close the first opening, and the second direction F2 intersects the first direction F1. In an embodiment, the first collecting member 210 and the second collecting member 220 are both electrically connected to the third collecting member 230.

[0041] According to the battery pack provided in the embodiment of the present application, the housing 300 has a first opening 340, a second opening 350 and a third opening 360, the first opening 340 is closed by the corresponding third collecting member 230, and the second opening 350 and the third opening 360 are respectively closed by the first collecting member 210 and the second collecting member 220. In this way, the battery pack provided in the embodiment of the present application is equivalent to removing the original side panel on the outside of the BDU 100 and using the BMS 200 as the side panel, which is conducive to improving the volume utilization of the battery pack.

[0042] That is to say, according to the battery pack provided by the embodiment of the present application, the original BMS 200 is used as the side plate outside the BDU 100, and thus no additional side plate of the BDU 100 is required, thereby saving the volume of the battery pack and integrating the BMS 200 and the BDU 100 together. As mentioned above, the volume utilization rate of the battery pack is improved.

[0043] In the embodiment, the collection component may be, for example, a collection board, and the collection board here may adopt the collection board of the BMS200 in the prior art. Therefore, the first collection component 210, the second collection component 220, and the third collection component 230 mentioned above may be collection boards in essence. That is, the first collection component 210, the second collection component 220, and the third collection component 230 may be the first collection board, the second collection board, and the third collection board, respectively. As an example, in the embodiment, the first collection board, the second collection board, and the third collection board may all be, for example, formed into a rectangular or substantially rectangular plate-like structure.

[0044] In an embodiment, Figure 1 As shown, the shell 300 may be, for example, roughly in the shape of a cuboid or a cuboid. The shell 300 may have a bottom and four side portions arranged on the bottom. The aforementioned bottom may be opposite to the first opening 340 in the first direction F1, that is, the first opening 340 may be, for example, the top opening of the shell 300. Two of the aforementioned four side portions may be arranged opposite to each other in the second direction F2, and respectively have a second opening 350 and a third opening 360. Thus, the first collection member 210 and the second collection member 220 may close the second opening 350 and the third opening 360 by being respectively connected to the aforementioned two side portions.

[0045] In addition, as an example, in an embodiment, the first direction F1 and the second direction F2 may be perpendicular to each other. Figure 1 As shown, the first direction F1 may be, for example, a vertical direction, and the second direction F2 may be, for example, a first horizontal direction.

[0046] In some examples not shown, more remaining collecting components may be provided on the basis of the first collecting component 210, the second collecting component 220 and the third collecting component 230. These collecting components may be arranged in the shell 300 and surrounded on the outside of the BDU 100, or openings may be provided on the other two sides of the above-mentioned four sides, and these openings may be closed by the remaining collecting components.

[0047] According to the battery pack provided in the embodiment of the present application, the BDU 100 may include a flexible circuit board 111 , which may be electrically connected to at least one of the first collecting component 210 , the second collecting component 220 , and the third collecting component 230 , so that the BDU 100 is communicatively connected to the BMS 200 .

[0048] In the embodiment, a flexible circuit board 111 is used to electrically connect the BDU 100 and the BMS 200. The direction of the flexible circuit board 111 is easy to arrange and adjust. Compared with the wire harness used in the prior art, the flexible circuit board 111 is easier to bend, thereby avoiding the situation where the design and assembly are more complicated as the wire harness is used. The use of the flexible circuit board 111 is more conducive to making full use of the space of the battery pack. As an example, in the embodiment, the flexible circuit board 111 can be arranged inside the housing 300, for example, extending along the inner side of the housing 300.

[0049] In the embodiment, the flexible circuit board 111 can be connected to the first collection member 210 and the second collection member 220, for example, the two ends of the flexible circuit board 111 are respectively connected to the side of the first collection member 210 facing the second collection member 220 (i.e., the inner side of the first collection member 210) and the side of the second collection member 220 facing the first collection member 210 (i.e., the inner side of the second collection member 220). In terms of connection, the flexible circuit board 111 can be connected to both the first collection member 210 and the second collection member 220 by bonding, and the bonding here can specifically be connected by hot melt adhesive or by adhesive tape.

[0050] According to the battery pack provided in the embodiment of the present application, the flexible circuit board 111 can extend along the side of at least one of the first collecting member 210, the second collecting member 220 and the third collecting member 230. In this way, the side of at least one of the first collecting member 210, the second collecting member 220 and the third collecting member 230 can be used to guide the flexible circuit board 111, so that the flexible circuit board 111 extends in accordance with the side, which is more conducive to the flexible circuit board 111 saving the internal space of the housing 300.

[0051] In the embodiment, as mentioned in the above example, at least one of the first collecting member 210, the second collecting member 220 and the third collecting member 230 can be, for example, the first collecting member 210 and the second collecting member 220, so that a part of the flexible circuit board 111 can extend along the inner side of the first collecting member 210, and another part of the flexible circuit board 111 can extend along the inner side of the second collecting member 220. That is, a part of the flexible circuit board 111 mentioned above can be attached to the inner side of the first collecting member 210, and this attachment can be connected to the inner side of the first collecting member 210, for example, by bonding in the above manner. Similarly, the second collecting member 220 and another part of the flexible circuit board 111 mentioned above can also be connected in this way, which will not be repeated here.

[0052] According to the battery pack provided by the embodiment of the present application, the flexible circuit board 111 may include a first connection portion 111a and a second connection portion, the first connection portion 111a may extend along a side of the first collecting member 210 , and the second connection portion may extend along a side of the second collecting member 220 .

[0053] In this way, as mentioned in the above description, the flexible circuit board 111 of the battery pack provided according to the embodiment of the present application can be guided by the first collecting member 210 and the second collecting member 220, ensuring that the flexible circuit board 111 can be reliably installed. As an example, in an embodiment, both ends of the flexible circuit board 111 can extend upward from the bottom of the first collecting member 210 and the bottom of the second collecting member 220, respectively.

[0054] According to the battery pack provided in the embodiment of the present application, the flexible circuit board 111 may further include a main body 111b, the first connection portion 111a and the second connection portion may be respectively connected to both ends of the main body 111b, and the main body 111b may extend along the inner side of the shell 300.

[0055] That is to say, based on the above arrangement of the first connection part 111a and the second connection part, the flexible circuit board 111 may also have a main body part 111b connecting the first connection part 111a and the second connection part. Specifically, the main body part 111b, the first connection part 111a and the second connection part may all be formed into a strip structure. As an example, the three may be integrally formed. In the embodiment, the main body part 111b may be attached to the inner side of the housing 300, that is, extend to the inner side of the bottom of the housing 300. In this way, the main body part 111b is guided by the inner side of the bottom of the housing 300, further improving the reliability of the installation of the flexible circuit board.

[0056] According to the battery pack provided in the embodiment of the present application, the shell 300 may include two accommodating portions 310 respectively arranged corresponding to the first collecting member 210 and the second collecting member 220. The first collecting member 210 and the second collecting member 220 may be respectively limited by the two accommodating portions 310 to respectively close the second opening 350 and the third opening 360.

[0057] Thus, according to the battery pack provided in the embodiment of the present application, the first collecting member 210 and the second collecting member 220 are respectively limited by two accommodating portions 310 , so that the first collecting member 210 and the second collecting member 220 can be more reliably installed on the housing 300 .

[0058] In an embodiment, as an example, the receiving portion 310 may be, for example, a slot. Figure 1As shown, each receiving portion 310 may be defined by, for example, a wall portion and a corresponding side portion disposed inside the housing 300. In an embodiment, as an example, the side portion of the housing 300 may have a rectangular or substantially rectangular recess, the wall portion may be located inside the corresponding side portion, and the shape of the wall portion may be the same as that of the corresponding side portion, that is, it also has the aforementioned recess, thereby forming the aforementioned slot between the wall portion and the side portion corresponding to the wall portion.

[0059] In an embodiment, the first collecting member 210 and the second collecting member 220 can be inserted into the corresponding accommodating portion 310 so that the three side edges of the first collecting member 210 and the second collecting member 220 are accommodated in the accommodating portion 310, thereby ensuring that the first collecting member 210 and the second collecting member 220 are both reliably installed and easy to disassemble.

[0060] According to a battery pack provided in an embodiment of the present application, in the embodiment, as described above, each accommodating portion 310 may include a guide portion 311 extending along the first direction F1, and the first collecting member 210 and the second collecting member 220 may be configured to enter the interior of their respective corresponding accommodating portions 310 via the guidance of their respective corresponding guide portions 311.

[0061] In the embodiment, the guide portion 311 may be a strip groove, which may be defined by the wall portion and the corresponding side portion as described above. Specifically, the wall portion may have two strip portions extending along the first direction F1, i.e., the vertical direction, on both sides in the third direction F3, and the corresponding side portion also has such a strip portion. In this way, the strip portions on the wall portion and the strip portions on the corresponding side portion are opposite to each other to form the aforementioned strip groove. The strip groove is used to guide the edges of the first collection member 210 and the second collection member 220 on both sides in the third direction F3.

[0062] According to the battery pack provided in the embodiment of the present application, the housing 300 may further include a first wall portion 320 and a second wall portion 330 that are opposite to each other in the third direction F3, and the first wall portion 320 and the second wall portion 330 may be arranged around the outside of the BDU 100. The first wall portion 320 and the second wall portion 330 mentioned here are the two side portions without recesses as mentioned in the above description, and both are part of the housing 300. Therefore, in the embodiment, the two accommodating portions 310 may be respectively connected to the two sides of the first wall portion 320 in the second direction F2, and the two accommodating portions 310 may be respectively connected to the two sides of the second wall portion 330 in the second direction F2.

[0063] According to the battery pack provided in the embodiment of the present application, the first collection member 210 and the second collection member 220 can both be plugged into the third collection member 230 to be electrically connected to the third collection member 230. Specifically, the first collection member 210 and the second collection member 220 can expose their respective gold fingers on their respective upper sides, and the gold fingers can be inserted into the lower connection groove of the third collection member 230, so as to realize the electrical connection between the first collection member 210 and the second collection member 220 and the third collection member 230 respectively.

[0064] According to the battery pack provided in the embodiment of the present application, the BDU 100 may include an electrical component 110, and the electrical component 110 included in the BDU 100 may be exposed in the space surrounded by the first collection member 210, the second collection member 220, and the third collection member 230. In the embodiment, the electrical component 110 may be the electrical component 110 forming the BDU 100, and the electrical component 110 may include internal components 112, which is equivalent to the electrical components 110 being exposed in the space surrounded by the first collection member 210, the second collection member 220, and the third collection member 230, and no additional protective components may be provided outside the electrical component 110, which is conducive to further improving the volume utilization of the battery pack.

[0065] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. All equivalent structural changes made by using the contents of the present application specification and drawings under the innovative concept of the present application, or directly / indirectly applied in other related technical fields are included in the protection scope of the present application.

Claims

1. A battery pack, characterized in that: The battery pack comprises: BDU(100); A BMS (200), the BMS (200) comprising a first collecting component (210), a second collecting component (220) and a third collecting component (230), wherein the first collecting component (210), the second collecting component (220) and the third collecting component (230) are arranged outside the BDU (100); a housing (300) connected to the first collecting member (210), the second collecting member (220) and the third collecting member (230) so as to be arranged together with the first collecting member (210), the second collecting member (220) and the third collecting member (230) on the outside of the BDU (100), the housing (300) having a first opening (340) in the first direction (F1) and a second opening (350) and a third opening (360) opposite to each other in the second direction; wherein the first collecting member (210) and the second collecting member (220) are arranged opposite to each other in the second direction (F2), and the first collecting member (210) and the second collecting member (220) are both connected to the housing (300) to respectively close the second opening (350) and the third opening (360); Wherein, the third collecting member (230) and the housing (300) are opposite to each other in a first direction (F1) to close the first opening (340); the second direction (F2) intersects with the first direction (F1); Wherein, the first collecting component (210) and the second collecting component (220) are both electrically connected to the third collecting component (230).

2. The battery pack according to claim 1, characterized in that: The BDU (100) comprises a flexible circuit board (111), wherein the flexible circuit board (111) is electrically connected to at least one of the first collecting component (210), the second collecting component (220) and the third collecting component (230), so that the BDU (100) is communicatively connected to the BMS (200).

3. The battery pack according to claim 2, characterized in that: The flexible circuit board (111) extends along a side of at least one of the first collecting member (210), the second collecting member (220), and the third collecting member (230).

4. The battery pack according to claim 3, characterized in that: The flexible circuit board (111) includes a first connection portion (111a) extending along a side of the first collecting member (210) and a second connection portion extending along a side of the second collecting member (220).

5. The battery pack according to claim 4, characterized in that: The flexible circuit board (111) further comprises a main body (111b), the first connection part (111a) and the second connection part are respectively connected to two ends of the main body (111b), and the main body (111b) extends along the inner side of the housing (300).

6. The battery pack according to claim 1, characterized in that: The shell (300) comprises two accommodating portions (310) respectively arranged corresponding to the first collecting member (210) and the second collecting member (220); the first collecting member (210) and the second collecting member (220) are respectively limited by the two accommodating portions (310) to respectively close the second opening (350) and the third opening (360).

7. The battery pack according to claim 6, characterized in that: Each of the accommodating portions (310) includes a guide portion (311) extending along the first direction (F1), and the first collecting member (210) and the second collecting member (220) are configured to enter the interior of the respective corresponding accommodating portion (310) via the guidance of the respective corresponding guide portion (311), and the first direction (F1) is perpendicular to the second direction (F2).

8. The battery pack according to claim 6, characterized in that: The housing (300) further comprises a first wall portion (320) and a second wall portion (330) which are opposite to each other in a third direction (F3), wherein the first wall portion (320) and the second wall portion (330) are both arranged around the outer side of the BDU (100); The two accommodating portions (310) are respectively connected to the two sides of the first wall portion (320) in the second direction (F2), and the two accommodating portions (310) are respectively connected to the two sides of the second wall portion (330) in the second direction (F2), and the second direction (F2) is perpendicular to the third direction (F3).

9. The battery pack according to claim 6, characterized in that: The first collecting component (210) and the second collecting component (220) are both plugged into the third collecting component (230) to be electrically connected to the third collecting component (230).

10. The battery pack according to any one of claims 1 to 9, characterized in that: The BDU (100) includes an electrical component (110), and the electrical component (110) included in the BDU (100) is exposed in a space surrounded by the first collecting component (210), the second collecting component (220), and the third collecting component (230).

Images