Battery pack and electronic device

Abstract

A battery pack and an electronic device. The battery pack (100) comprises: a case body (10) having an accommodating cavity; a locking-attaching beam (11) detachably connected to the case body (10), the locking-attaching beam (11) dividing the accommodating cavity into a module area (41) and an electrical area (42); a battery module (20) disposed within the module area (41); and a first cover (31) connected to the case body (10) and covering the module area (41), wherein a gap is provided between the locking-attaching beam (11) and the bottom of the accommodating cavity, and a wire harness connected to the battery module (20) passes below the locking-attaching beam (11) and enters the electrical area (42).

Description

Battery packs and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 2024208534190, filed with the Chinese Patent Office on April 23, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, specifically to a battery pack and electronic device. Background Technology

[0003] In related technologies, the battery pack housing is usually equipped with a partition, which divides the housing cavity into a module area and an electrical area. The battery modules (cells) are located in the module area, while the electrical area is usually used to house electronic control components such as BMS and BDU. The wiring harnesses and copper busbars that connect to the cells need to pass through the partition to enter the electrical area in order to connect with the electronic control components. Technical issues

[0004] In related technologies, the battery pack housing and separators are usually welded or integrally formed. When installing wiring harnesses and copper busbars, the separators hinder the operation and result in low production efficiency. Technical solutions

[0005] In a first aspect, this application provides a battery pack, comprising:

[0006] The box-shaped enclosure has a receiving cavity;

[0007] The locking beam, which is detachably connected to the housing, divides the housing into a modular area and an electrical area;

[0008] The battery module is located within the module area;

[0009] The first cover is connected to the housing and covers the module area;

[0010] There is a gap between the locking beam and the bottom of the receiving cavity, and the wiring harness connected to the battery module passes through the bottom of the locking beam and enters the electrical area.

[0011] Secondly, this application provides an electronic device, including the battery pack provided in this application. Beneficial effects

[0012] The beneficial effects of the battery pack and electronic equipment provided in this application are as follows: The battery pack includes a housing, a locking beam, battery modules, and a first cover. The locking beam divides the housing cavity into a module area and an electrical area. The first cover is connected to the housing and covers the module area to protect the battery modules inside. The locking beam is detachably connected to the housing. The wiring harness connected to the battery modules passes through the bottom of the locking beam and enters the electrical area. The locking beam and the housing are separable, and wires can be threaded through the bottom of the locking beam. Therefore, during the assembly of the battery pack, the wiring harness can be connected and installed first, and then the locking beam can be installed on the housing. This facilitates the wiring installation of the wiring harness and helps to improve the production efficiency of the battery pack. Attached Figure Description

[0013] Figure 1 is a three-dimensional structural diagram of a battery pack provided in this application;

[0014] Figure 2 is a top view of the structure of a battery pack provided in this application after removing the first cover and the second cover;

[0015] Figure 3 is a three-dimensional structural diagram of a battery pack provided in this application after removing the first cover and the second cover;

[0016] Figure 4 is an enlarged structural diagram of the battery pack shown in Figure 3 at position A;

[0017] Figure 5 is an exploded schematic diagram of a battery pack provided in this application;

[0018] Figure 6 is a three-dimensional structural schematic diagram of a locking beam provided in this application;

[0019] Figure 7 is a structural schematic diagram of another type of lock-attached beam provided in this application.

[0020] The annotations in the attached figures are explained as follows:

[0021] Battery pack 100, housing 10, locking beam 11, first beam 111, second beam 112, third beam 113, clearance groove 114, sealant 12, battery module 20, wiring harness 21, adhesive 22, first cover 31, second cover 32, module area 41, electrical area 42, first sealing strip 51, second sealing strip 52, first end P, second end Q. Embodiments of the present invention

[0022] Please refer to Figures 1 to 3 together. The battery pack 100 of this application embodiment includes a housing 10, a locking beam 11, a battery module 20, a first cover 31, and a second cover 32.

[0023] The housing 10 has a receiving cavity; the locking beam 11 is detachably connected to the housing 10, and the locking beam 11 divides the receiving cavity into a module area 41 and an electrical area 42; the battery module 20 is disposed in the module area 41; the first cover 31 is connected to the housing 10 and covers the module area 41; wherein, there is a gap between the locking beam 11 and the bottom of the receiving cavity, and the wiring harness 21 connected to the battery module 20 passes through the gap below the locking beam 11 and enters the electrical area 42.

[0024] In this embodiment, the locking beam 11 and the housing 10 are separable, and the gap below the locking beam 11 can be used to thread wires. Therefore, during the assembly of the battery pack 100, the wiring harness 21 can be connected and installed first, and then the locking beam 11 can be installed on the housing 10. This facilitates the wiring installation of the wiring harness 21 and helps to improve the production efficiency of the battery pack 100.

[0025] The battery module 20 may contain multiple battery cells arranged within the module area 41. A first cover 31 is connected to the housing 10 and covers the module area 41 to protect the battery module 20 within it. The electrical area 42 may be used to house electronic control components such as the BMS and BDU. The battery module 20 is connected to the electronic control components such as the BMS and BDU via copper busbars and wiring harnesses 21.

[0026] The locking beam 11 is elongated, with its two ends respectively attached to the two side walls of the housing 10, or its two ends respectively attached to the bottom of the receiving cavity of the housing 10. The locking beam 11 can be bridge-shaped. There is a wire-passing space below the locking beam 11, through which the wire harness 21 and the copper plate can pass.

[0027] The locking beam 11 is detachably connected to the housing 10, for example, by means of screws or clips.

[0028] The locking beam 11 is long and narrow. The two ends of the locking beam 11 are the first end P and the second end Q, respectively. The first end P is detachably connected to one side of the box body 10, and the second end Q is detachably connected to the other side of the box body 10.

[0029] Referring to Figure 6, in one embodiment, the locking beam 11 includes a first beam 111, a second beam 112, and a third beam 113, which are connected sequentially. The end of the first beam 111 away from the second beam 112 is detachably connected to one side of the housing 10 (e.g., by screws), and the end of the third beam 113 away from the second beam 112 is detachably connected to the other side of the housing 10 (e.g., by screws). With reference to the bottom of the cavity, the ends of the first beam 111 (i.e., the first end P) and the third beam 113 (i.e., the second end Q) are both lower than the second beam 112. Since both the first end P and the second end Q are lower than the second beam 112, the second beam 112 arches upwards (the locking beam 11 can be bow-shaped as a whole), providing more space for the battery module 20 and the wiring harness 21, which is beneficial for increasing the capacity of the battery pack 100 and improving the convenience of wiring.

[0030] The first beam 111, the second beam 112, and the third beam 113 can be three profiles welded together to form the locking beam 11. The locking beam 11 can also be a one-piece molded profile, die-cast part, or forging part. The box body 10 and the locking beam 11 can both be made of aluminum.

[0031] In one embodiment, the detachable connection between the locking beam 11 and the housing 10 includes screw connection, snap-fit, or plug-in connection. The locking beam 11 and the housing 10 can be connected by screws, snap-fit, or a slot can be provided on the side wall of the housing 10, with the end of the locking beam 11 inserted into the slot (plug-in) to achieve a detachable connection.

[0032] Please refer to Figures 3 and 4. In one embodiment, a sealant 12 is provided between the first end P and / or the second end Q of the locking beam 11 and the housing 10, thereby improving the sealing between the locking beam 11 and the housing 10 and strengthening the protection of the battery module 20.

[0033] In one embodiment, the first cover 31 is connected to the upper surface of the locking beam 11. Three of the four edges of the first cover 31 are attached to the sidewalls of the housing 10, and the fourth edge may be attached to the upper surface of the locking beam 11. A first annular sealing strip 51 may be provided below the four edges of the first cover 31, thereby improving the sealing between the first cover 31 and the housing 10, and between the first cover 31 and the locking beam 11.

[0034] Referring to Figure 5, in one embodiment, an adhesive 22 is provided between the first cover 31 and the battery module 20. The adhesive 22 can improve the positional stability of the battery module 20, thereby improving battery safety. The adhesive 22 can be made entirely of an adhesive material, or it can be based on foam with an adhesive material coated on the outer surface of the foam.

[0035] The second cover 32 is connected to the housing 10 and covers the electrical area 42, thereby protecting the circuit devices within the electrical area 42.

[0036] In one embodiment, the second cover 32 is detachably connected to the housing 10, thereby facilitating maintenance of the circuit components within the electrical area 42. The connection between the second cover 32 and the housing 10 can be a screw connection or a snap-fit ​​connection. During maintenance, the second cover 32 can be removed first, and then the circuitry within the electrical area 42 can be inspected and repaired.

[0037] In one embodiment, the second cover 32 is detachably connected to the upper surface of the locking beam 11, for example, by screws or snaps. Three of the four edges of the second cover 32 abut against the sidewall of the housing 10, and the fourth edge abuts against the upper surface of the locking beam 11. A second annular sealing strip 52 may be provided below the four edges of the second cover 32, thereby improving the sealing between the second cover 32 and the housing 10, and between the second cover 32 and the locking beam 11. The first cover 31, the second cover 32, and the housing 10 can form a sealed space to protect the battery module 20 and circuit components within the cavity. The first sealing strip 51 and the second sealing strip 52 can be non-adhesive rubber rings, adhesive materials, or a rubber (e.g., silicone) base with an adhesive material coated on the outer surface.

[0038] This application also provides another embodiment of the locking beam 11, as shown in FIG7. The gap between the locking beam 11 and the bottom of the cavity of the housing 10 is a clearance groove 114. The wiring harness connected to the battery module 20 passes through the clearance groove 114 and enters the electrical area 42. The number of clearance grooves 114 can be one or more. The locking beam 11 can be plate-shaped, and the clearance groove 114 is provided at the bottom of the locking beam 11, with the groove opening facing the bottom of the cavity of the housing 10.

[0039] An assembly process for the battery pack 100 in this embodiment is as follows: (1) Install the battery module 20 in the module area 41; (2) Install electronic control components such as BMS and BDU in the electrical area 42; (3) Lead out the copper busbar and wire harness 21 from the battery module 20 and connect them to the electronic control components in the electrical area 42; (4) Install the locking beam 11 and apply sealant 12 at the connection; (5) Apply adhesive 22 to the top of the battery module 20; (6) Apply the first sealant 12 and the second sealant 12; (7) Install the first cover 31 and the second cover 32.

[0040] In summary, the battery pack 100 of this embodiment includes a housing 10, a locking beam 11, a battery module 20, and a first cover 31. The locking beam 11 divides the housing 10's cavity into a module area 41 and an electrical area 42. The first cover 31 is connected to the housing 10 and covers the module area 41 to protect the battery module 20 inside. The locking beam 11 is detachably connected to the housing 10. The wiring harness 21 connected to the battery module 20 passes through the bottom of the locking beam 11 and enters the electrical area 42. The locking beam 11 is separable from the housing 10, and wires can be threaded through the bottom of the locking beam 11. Therefore, during the assembly of the battery pack 100, the wiring harness 21 can be connected and installed first, and then the locking beam 11 can be installed onto the housing 10. This facilitates the wiring installation of the wiring harness 21 and helps improve the production efficiency of the battery pack 100.

Claims

1. A battery pack, comprising: The box-shaped enclosure has a receiving cavity; A locking beam, detachably connected to the housing, divides the receiving cavity into a modular area and an electrical area; A battery module is located within the module area; A first cover is connected to the housing and covers the module area; There is a gap between the locking beam and the bottom of the receiving cavity, and the wiring harness connected to the battery module passes through the bottom of the locking beam and enters the electrical area.

2. The battery pack according to claim 1, wherein, The locking beam is long and narrow, with its first end detachably connected to one side of the housing and its second end detachably connected to the other side of the housing.

3. The battery pack according to claim 1, wherein, A sealant is provided between the first end and / or the second end of the locking beam and the box body.

4. The battery pack according to claim 1, wherein, The locking beam includes a first beam, a second beam, and a third beam, which are connected sequentially. The end of the first beam away from the second beam is detachably connected to one side of the housing, and the end of the third beam away from the second beam is detachably connected to the other side of the housing. With the bottom of the receiving cavity as a reference, the ends of the first beam and the third beam are both lower than the second beam.

5. The battery pack according to claim 1, wherein, The detachable connection methods between the locking beam and the box body include screw connection, snap-fit ​​connection, or plug-in connection.

6. The battery pack according to claim 1, wherein, The gap between the locking beam and the bottom of the receiving cavity is a clearance groove, through which the wiring harness connected to the battery module passes and enters the electrical area.

7. The battery pack according to claim 1, wherein, The first cover is connected to the upper surface of the locking beam.

8. The battery pack according to claim 1, wherein, An adhesive is provided between the first cover and the battery module.

9. The battery pack according to any one of claims 1 to 8, further comprising a second cover, the second cover being connected to the housing and covering the electrical area.

10. The battery pack according to claim 9, wherein, The second cover is detachably connected to the box body.

11. The battery pack according to claim 9, wherein, The second cover is detachably connected to the upper surface of the locking beam.

12. An electronic device comprising a battery pack as claimed in any one of claims 1-11.

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