Battery modules and battery packs

Abstract

The utility model belongs to the field of battery technology, and discloses a battery module and a battery pack. The battery module includes a battery cell assembly, an upper cover, and a wiring harness bracket. The battery cell assembly includes a plurality of battery cells, and the plurality of battery cells are arranged in an array; the upper cover is buckled on the top of the plurality of battery cells; the wiring harness bracket is fixedly connected to the upper cover, the wiring harness is locked to the wiring harness bracket, and the wiring harness is electrically connected to the plurality of battery cells. In the above-mentioned battery module and battery pack, the space on both sides of the wiring harness bracket in the second direction is not restricted by the installation of the battery module, the operating space of the installer is larger, and the installation efficiency of the wiring harness is improved; the energy density of the entire battery pack is improved; when using a long copper busbar wiring harness, it can be selected to be arranged from above the battery module to save wiring length.

Description

Technical Field

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

[0002] A high-voltage wiring harness is provided in the battery pack. The high-voltage wiring harness is electrically connected to the battery module inside the battery pack to realize power supply from the battery cell to the outside. The high-voltage wiring harness is generally fixed on the beam inside the outer box of the battery pack. Since the battery modules are installed on both sides of the beam, the fixing space left for the high-voltage wiring harness is small, and it is inconvenient for operators to install the high-voltage wiring harness feet. The installation efficiency of the high-voltage wiring harness is very low. At the same time, it occupies the installation space of the battery module, reducing the energy density of the battery pack.

[0003] Therefore, there is an urgent need to design a battery module and a battery pack to solve the above problems. Utility Model Content

[0004] One purpose of the utility model is to provide a battery module with ample installation space, which can increase the installation speed of the wiring harness, and there is more space inside the battery pack to install the battery module, thereby increasing the energy density of the battery pack.

[0005] Another object of the present invention is to provide a battery pack having a fast installation speed and a high energy density.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Battery module, including:

[0008] A battery cell assembly, comprising a plurality of battery cells, wherein the plurality of battery cells are arranged in an array;

[0009] An upper cover, buckled on the top of the plurality of battery cells;

[0010] A wire harness bracket is fixedly connected to the upper cover, a wire harness is locked to the wire harness bracket, and the wire harness is electrically connected to the plurality of battery cells.

[0011] As an optional solution, the wiring harness bracket includes a connecting portion and an installing portion, the installing portions are respectively arranged on both sides of the connecting portion, the installing portions are provided with a receiving groove extending along a first direction, the opening of the receiving groove faces a side away from the connecting portion, and the receiving groove is used to receive at least part of the wiring harness.

[0012] As an optional solution, a first reinforcing rib is disposed in the accommodating groove, and the first reinforcing rib extends along the first direction and has two sides respectively abutting against two side walls of the accommodating groove.

[0013] As an optional solution, the connecting portion includes:

[0014] The first layer and the second layer are arranged at intervals, and the same side of the first layer and the second layer is connected to the same mounting portion;

[0015] The second reinforcing rib is connected between the first layer and the second layer.

[0016] As an optional solution, the upper cover is protruding with a connecting piece, and the bottom side of the connecting part and the bottom sides of the two mounting parts have a height difference to form a first avoidance groove on the bottom side of the wiring harness bracket, and the first avoidance groove is used to accommodate at least part of the connecting piece.

[0017] As an optional solution, the above-mentioned connecting piece includes:

[0018] A first connecting arm is fitted and fixedly connected to the upper cover;

[0019] A second connecting arm connected to the first connecting arm and having a height difference with the upper cover, the connecting portion abutting against the second connecting arm;

[0020] The locking piece passes through the connecting portion and is locked with the second connecting arm.

[0021] As an optional solution, an upper side of the connecting portion and an upper side of the two mounting portions have a height difference to form a second avoidance groove on the upper side of the wiring harness bracket, and the second avoidance groove is used to accommodate at least a portion of the locking member.

[0022] As an optional solution, a locking nut is embedded in the second connecting arm, and the locking piece is threadedly connected to the locking nut.

[0023] As an optional solution, the connecting piece is in a "J" shape.

[0024] As an optional solution, the battery module further comprises a locking piece, which is ring-shaped and can be opened or closed, and the mounting portion is provided with a through hole for the locking piece to pass through.

[0025] As an optional solution, the battery module further comprises a locking member, and two ends of the locking member are respectively snap-connected with two side walls of the accommodating groove; or

[0026] One end of the locking member is movably connected to one side wall of the accommodating groove, and the other end is snap-connected to the other side wall of the accommodating groove.

[0027] The battery pack comprises an outer box and a plurality of the above-mentioned battery modules, wherein the plurality of the above-mentioned battery modules are arranged in an array inside the above-mentioned outer box, and adjacent the above-mentioned battery modules are separated by beams.

[0028] The beneficial effects of the utility model are:

[0029] The utility model provides a battery module, which connects a connecting part with an upper cover so that a wiring harness bracket is separated from the installation form of a beam inside a battery pack, so that the space on both sides of the wiring harness bracket in the second direction is not restricted by the installation of the battery module, and the operating space for the installer is larger, thereby improving the installation efficiency of the wiring harness; at the same time, there is no need to reserve installation space for the wiring harness in the installation space of the battery module in the battery pack, thereby making the size of the battery module larger, and more battery cells can be placed inside, thereby improving the energy density of the entire battery pack; in addition, the provision of the accommodating groove can both protect part of the wiring harness and exert a certain restraining effect on the wiring harness, so that the wiring harness is more stably fixed, and at the same time, when using a long copper busbar wiring harness, it can be arranged from above the battery module to save wiring length.

[0030] The utility model also provides a battery pack, which includes an outer box and a plurality of the above-mentioned battery modules, wherein the plurality of battery modules are arranged in an array inside the outer box, and adjacent battery modules are separated by beams. The above-mentioned battery pack adopts the above-mentioned battery modules, and has a fast installation speed and high energy density. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of a battery module and a wiring harness provided in an embodiment of the utility model;

[0032] Figure 2 It is a structural schematic diagram of a battery module provided by an embodiment of the utility model;

[0033] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0034] Figure 4 It is a schematic diagram of the structure of a battery pack provided by an embodiment of the utility model.

[0035] In the figure:

[0036] 100, wiring harness bracket; 10, connecting portion; 11, first layer; 12, second layer; 13, second reinforcing rib; 14, through hole; 20, mounting portion; 21, accommodating groove; 22, first reinforcing rib; 23, through hole; 30, first avoidance groove; 40, second avoidance groove; 600, locking member;

[0037] 200, connecting member; 210, first connecting arm; 220, second connecting arm; 230, locking nut;

[0038] 300, locking piece;

[0039] 400, battery module; 410, upper cover;

[0040] 500, beam; 700, wiring harness; 800, outer frame. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] This embodiment provides a battery module 400. When an operator installs a wiring harness 700 to the battery module 400, the installation space is larger and the installation speed is faster. At the same time, the installation space of the battery module 400 is avoided, thereby improving the energy density of the battery pack. Figure 1-Figure 3As shown, the battery module 400 includes a battery cell assembly (not shown), an upper cover 410 and a wiring harness bracket 100, the battery cell assembly includes a plurality of battery cells, and the plurality of battery cells are arranged in an array; the upper cover 410 is buckled on the top of the plurality of battery cells; the wiring harness bracket 100 is fixedly connected to the upper cover 410, the wiring harness 700 is locked to the wiring harness bracket 100, and the wiring harness 700 is electrically connected to the plurality of battery cells.

[0046] The above-mentioned battery module 400, by connecting the connecting part 10 with the upper cover 410, makes the wiring harness bracket 100 detach from the installation form of the internal beam 500 of the battery pack, so that the space on both sides of the wiring harness bracket 100 in the second direction (Y direction in the figure) is not restricted by the installation of the battery module 400, and the installer has more operating space, thereby improving the installation efficiency of the wiring harness 700; at the same time, there is no need to reserve installation space for the wiring harness 700 in the installation space of the battery module 400 in the battery pack, thereby making the size of the battery module 400 larger, and more battery cells can be placed inside, thereby improving the energy density of the entire battery pack; at the same time, when using the long copper bus wire harness 700, you can choose to arrange it from above the battery module 400 to save wiring length.

[0047] Alternatively, if Figure 3 As shown, the wire harness bracket 100 includes a connecting portion 10 and a mounting portion 20, and the mounting portions 20 are respectively arranged on both sides of the connecting portion 10, and the mounting portion 20 is provided with a receiving groove 21 extending along a first direction (X direction in the figure, and Y direction is perpendicular to the X direction), and the opening of the receiving groove 21 faces the side away from the connecting portion 10, and the receiving groove 21 is used to accommodate at least part of the wire harness 700. Through the above-mentioned arrangement, the arrangement of the receiving groove 21 can not only protect part of the wire harness 700, but also play a certain restraining role on the wire harness 700, and the wire harness 700 is fixed more stably. It should be noted that in this embodiment, the wire harness 700 is a high-voltage wire harness, and in other embodiments, the wire harness 700 can also be a low-voltage wire harness or a wire harness for communication, etc., which is not limited here.

[0048] Optionally, in this embodiment, if Figure 1 and Figure 3 As shown, the battery module 400 further includes a locking member 600, which is annular and can be opened or closed, and the mounting portion 20 has a through hole 23 for the locking member 600 to pass through. Through the above arrangement, the locking member 600 locks the wiring harness 700 in the receiving groove 21. Specifically, as Figure 3As shown, the through hole 23 passes through the two side walls of the receiving groove 21. In this embodiment, the locking member 600 is a strap, which is easy to obtain and can be quickly tied. In other embodiments, the locking member 600 can also be a rope, a wire, or a clamp, etc., which is not limited here. In another optional embodiment, the locking member 600 can also be hinged to one side wall of the receiving groove 21 at one end, and detachably connected to the other side wall of the receiving groove 21 at the other end, thereby realizing the integration of the locking member 600 and the wiring harness bracket 100, so that the installer does not need to carry an additional locking member 600.

[0049] In other embodiments, the two ends of the locking member 600 may also be snap-connected with the two side walls of the receiving groove 21 respectively, thereby locking the wiring harness 700 in the receiving groove 21 .

[0050] In another embodiment, one end of the locking member 600 is movably connected to one side wall of the receiving groove 21, and the other end is snap-connected to the other side wall of the receiving groove 21. This arrangement can prevent the locking member 600 from being lost. Optionally, a through hole 23 can be provided in one side wall of the receiving groove 21 for one end of the locking member 600 to pass through. Optionally, one end of the locking member 600 is hinged to one side wall of the receiving groove 21.

[0051] It should be noted that the locking member 600 has a certain elasticity so as to fix the wire harnesses 700 of different thicknesses.

[0052] Optionally, in the first direction, each mounting portion 20 is correspondingly provided with at least two locking members 600 to ensure the stability of the fixing of the wire harness 700 in the length direction, and the through holes 23 and the locking members 600 are provided in a one-to-one correspondence.

[0053] Alternatively, if Figure 3 As shown, a first reinforcing rib 22 is provided in the receiving groove 21, and the first reinforcing rib 22 extends along the first direction and the two sides respectively abut against the two side walls of the receiving groove 21. Through the above arrangement, the structural strength of the mounting portion 20 is improved to prevent the mounting portion 20 from being deformed after long-term use.

[0054] Alternatively, if Figure 3 As shown, the connection part 10 includes a first layer 11, a second layer 12 and a second reinforcing rib 13. The first layer 11 and the second layer 12 are arranged at intervals, and the same side of the first layer 11 and the second layer 12 is connected to the same mounting part 20; the second reinforcing rib 13 is connected between the first layer 11 and the second layer 12. The two-layer arrangement can increase the connection area with the mounting part 20 and improve the connection strength. At the same time, the arrangement of the second reinforcing rib 13 improves the bending resistance of the connection part 10 itself.

[0055] It can be understood that the entire wiring harness bracket 100 is a profile, has sufficient structural strength, and meets the requirements of lightweight.

[0056] Optionally, in this embodiment, if Figure 2 and Figure 3 As shown, the upper cover 410 is provided with a connector 200 protruding therefrom, and the bottom side of the connecting portion 10 and the bottom sides of the two mounting portions 20 have a height difference to form a first avoidance groove 30 at the bottom side of the harness bracket 100, and the first avoidance groove 30 is used to accommodate at least part of the connector 200. The above arrangement prevents the entire harness bracket 100 from being set too high due to the protruding arrangement of the connector 200, and minimizes the height of the battery module 400. At the same time, it is avoided that the upper cover 410 is directly connected to the connecting portion 10, which causes the upper cover 410 to be subjected to additional processing.

[0057] Alternatively, if Figure 3 As shown, the connector 200 includes a first connector arm 210 and a second connector arm 220, the first connector arm 210 is fitted and fixedly connected to the upper cover 410; the second connector arm 220 is connected to the first connector arm 210 and has a height difference with the upper cover 410, and the connector 10 abuts against the second connector arm 220; the locking member 300 passes through the connector 10 and is locked with the second connector arm 220. Through the above arrangement, the connection between the first connector arm 210 and the upper cover 410 is a surface connection, the connection area is larger and more stable, and the locking member 300 realizes the connection between the harness bracket 100 and the connector 200.

[0058] Specifically, if Figure 3 As shown, the connecting portion 10 defines a through hole 14 , the through hole 14 is arranged corresponding to the second connecting arm 220 , and the locking member 300 passes through the through hole 14 and is locked with the second connecting arm 220 .

[0059] Further optionally, the second connecting arm 220 is embedded with the locking nut 230, and the locking piece 300 is threadedly connected to the locking nut 230. By embedding the locking nut 230, the second connecting arm 220 itself does not need to be threaded; at the same time, the locking nut 230 and the locking piece 300 are a combination of pressure rivet nuts in the prior art, which is more convenient to obtain and more stable after connection.

[0060] Optionally, the connecting member 200 is in the shape of a Chinese numeral 'X'. It is understandable that both ends of the second connecting arm 220 are connected to the first connecting arm 210 , which can ensure the stability of the connecting member 200 in supporting the wiring harness bracket 100 .

[0061] In this embodiment, Figure 1 As shown, in the first direction, each wiring harness bracket 100 is correspondingly provided with two connectors 200 to ensure the balance of the connector 200 when it is supported to the bottom surface of the second layer 12. In other embodiments, three, four or more connectors 200 may be provided, which is not limited here.

[0062] Alternatively, if Figure 3As shown, the upper side of the connecting portion 10 and the upper sides of the two mounting portions 20 have a height difference to form a second avoidance groove 40 on the upper side of the harness bracket 100, and the second avoidance groove 40 is used to accommodate at least part of the locking member 300. Through the above arrangement, the head of part or all of the locking member 300 is accommodated in the second avoidance groove 40, reducing the space occupied by the entire battery module 400 in the height direction.

[0063] In other embodiments, the wire harness bracket 100 may also be welded to the upper cover 410 , which is not limited here.

[0064] Optionally, in this embodiment, two wiring harness brackets 100 are provided on each battery module 400, and the two battery modules 400 are arranged at intervals along the second direction; in other embodiments, the number of battery modules 400 can be flexibly set according to the wiring rules of high-voltage lines, which is not limited here.

[0065] Optionally, the battery module 400 also includes two end plates and two side plates, the end plates and the side plates are alternately connected in sequence, the upper cover 410 is covered on the end plates and the side plates, and the battery cells are located in the space formed by the end plates, the side plates and the upper cover 410. The rest of the structure of the battery module 400 is not described here.

[0066] This embodiment also provides a battery pack, which includes an outer box and a plurality of the battery modules 400, wherein the plurality of battery modules 400 are arranged in an array inside the outer box, and adjacent battery modules 400 are separated by beams 500. By adopting the battery modules 400, the battery pack has a fast installation speed and a high energy density.

[0067] Alternatively, if Figure 4 As shown, several battery modules 400 are arranged in sequence along the length direction of the outer box, the length direction of the outer box is consistent with the width direction of the battery module 400, and the beam 500 extends along the width direction of the outer box. It can be understood that in the prior art, the beam 500 is divided into a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam are staggered inside the outer frame 800. In the solution of this embodiment, a single battery module 400 is arranged along the width direction of the battery pack, so that the longitudinal beam is cancelled in the battery pack, and the space for arranging the beam 500 is saved, so that there is more space in the battery pack to place the battery module 400, thereby improving the energy density of the battery pack.

[0068] It should be noted that the wiring harness brackets 100 of two adjacent battery modules 400 may be directly opposite to each other (see Figure 4 The three battery modules 400 in the upper middle section can also be staggered (see Figure 4 The third battery module 400 and the fourth battery module 400 from top to bottom are arranged to adapt to the routing changes of the wiring harness 700, which are not limited here.

[0069] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery module, characterized in that: Including: A battery cell assembly, including a plurality of battery cells, and the plurality of battery cells are arranged in an array; An upper cover (410), which is buckled on the tops of the plurality of battery cells; A wire harness bracket (100), which is fixedly connected to the upper cover (410), a wire harness (700) is locked to the wire harness bracket (100), and the wire harness (700) is electrically connected to the plurality of battery cells.

2. The battery module according to claim 1, characterized in that: The wire harness bracket (100) includes a connecting portion (10) and a mounting portion (20). The mounting portions (20) are respectively arranged on both sides of the connecting portion (10). The mounting portion (20) is provided with a receiving groove (21) extending along a first direction, and an opening of the receiving groove (21) faces away from one side of the connecting portion (10). The receiving groove (21) is used for receiving at least a part of the wire harness (700).

3. The battery module according to claim 2, characterized in that: A first reinforcing rib (22) is arranged in the receiving groove (21), and the first reinforcing rib (22) extends along the first direction and both sides thereof respectively abut against both side walls of the receiving groove (21).

4. The battery module according to claim 2, characterized in that: The connecting portion (10) includes: A first layer (11) and a second layer (12), which are arranged at intervals, and the same mounting portion (20) is connected to the same side of the first layer (11) and the second layer (12); A second reinforcing rib (13) is connected between the first layer (11) and the second layer (12).

5. The battery module according to any one of claims 2 to 4, characterized in that: The upper cover (410) is convexly provided with a connecting member (200). There is a height difference between the bottom side of the connecting portion (10) and the bottom sides of the two mounting portions (20) to form a first avoiding groove (30) at the bottom side of the wire harness bracket (100). The first avoiding groove (30) is used for receiving at least a part of the connecting member (200).

6. The battery module according to claim 5, characterized in that: The connecting member (200) includes: A first connecting arm (210), which is fixedly connected to the upper cover (410) in a fitting manner; A second connecting arm (220), which is connected to the first connecting arm (210) and has a height difference from the upper cover (410), and the connecting portion (10) abuts against the second connecting arm (220); A locking member (300) passes through the connecting portion (10) and is locked with the second connecting arm (220).

7. The battery module according to claim 6, characterized in that: There is a height difference between the upper side of the connecting portion (10) and the upper sides of the two mounting portions (20) to form a second avoiding groove (40) at the upper side of the wire harness bracket (100). The second avoiding groove (40) is used for receiving at least a part of the locking member (300).

8. The battery module according to claim 6, characterized in that: The second connecting arm (220) is internally embedded with a locking nut (230), and the locking member (300) is threadedly connected to the locking nut (230).

9. The battery module according to claim 5, characterized in that: The connecting member (200) is in a shape of a capital "J".

10. The battery module according to any one of claims 2 to 4, characterized in that: The battery module further includes a locking member (600). The locking member (600) is in a ring shape and can be opened or closed. The mounting portion (20) is provided with a through hole (23) for the locking member (600) to pass through.

11. The battery module according to any one of claims 2 to 4, characterized in that: The battery module further includes a locking member (600), and two ends of the locking member (600) are respectively snap-connected to both side walls of the receiving groove (21); or One end of the locking member (600) is movably connected to a side wall of the accommodating groove (21), and the other end is snap-connected to the other side wall of the accommodating groove (21).

12. A battery pack, characterized in that: It comprises an outer box body and a plurality of battery modules (400) as claimed in any one of claims 1 to 11, wherein the plurality of battery modules (400) are arranged in an array inside the outer box body, and adjacent battery modules (400) are separated by beams (500).

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