Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, and relates to the technical field of batteries. The battery pack comprises an upper cover, a lower box body, a panel assembly and a battery module, the upper cover is connected with the lower box body, a containing cavity is formed between the upper cover and the lower box body, the battery module is arranged in the containing cavity, the panel assembly comprises a panel support, a fuse box and a plug connector, the fuse box and the plug connector are both arranged on the panel support, the panel support is connected with the lower box body, and the panel support is connected with the lower box body. And the assembly and maintenance processes are simple and convenient.

Description

Technical Field

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

[0002] The automotive battery pack is one of the core power components of electric or hybrid vehicles. The battery pack generally includes an upper cover, connectors, an explosion-proof valve, a lower box, battery cells, etc. Multiple single cells are combined in series and parallel to provide power for the entire electric vehicle.

[0003] In the assembly process of some existing battery packs, the lower box is used as the installation base, and the connectors, fuses, battery cells, etc. are installed one by one on the lower box, and finally the upper cover is sealed to form a battery pack. This assembly process is relatively cumbersome and inconvenient for the maintenance of various components in the battery pack. Utility Model Content

[0004] The purpose of the present application includes, for example, providing a battery pack whose assembly and maintenance processes are relatively simple.

[0005] The purpose of the present application also includes providing an electrical device whose battery pack is relatively easy to assemble and maintain.

[0006] This application can be implemented as follows:

[0007] The present application provides a battery pack, which includes an upper cover, a lower box, a panel assembly and a battery module. The upper cover and the lower box are connected, and a receiving cavity is formed between the upper cover and the lower box. The battery module is arranged in the receiving cavity. The panel assembly includes a panel bracket, a fuse box and a connector. The fuse box and the connector are both arranged on the panel bracket, and the panel bracket is connected to the lower box.

[0008] Optionally, the upper cover includes a top plate, two first side plates and two second side plates, the two first side plates are arranged opposite to each other in the length direction of the top plate, the two second side plates are arranged opposite to each other in the width direction of the top plate, the two first side plates and the two second side plates are connected to the top plate, and the two first side plates and the two second side plates are connected to the lower box body;

[0009] A plurality of grooves are arranged at intervals on the top plate, one end of some of the grooves extends to one of the second side plates in the width direction of the top plate, and one end of another portion of the grooves extends to another second side plate in the width direction of the top plate.

[0010] Optionally, flanges are provided at the bottom of the two second side panels, and a rib is provided on each of the flanges, and the rib is close to one of the first side panels.

[0011] Optionally, the lower box body includes a bottom plate, two side beams and two cross beams, the two side beams are arranged opposite to each other in the width direction of the bottom plate, the two cross beams are arranged opposite to each other in the length direction of the bottom plate, the two side beams are connected to the bottom plate, each cross beam is connected to the two side beams at the same time, and the two side beams and the two cross beams are connected to the upper cover.

[0012] Optionally, a bearing platform is provided on the surface of one of the beams facing the other beam, and the lower box body includes a module mounting beam, the two ends of the module mounting beam are respectively connected to the two side beams, and the module mounting beam and the bearing platform jointly support the battery module.

[0013] Optionally, the lower box includes a mounting bracket, the mounting bracket is arranged on the bottom plate, and the panel bracket is connected to the mounting bracket.

[0014] Optionally, a limiting column is provided on the mounting bracket, and a fixing hole is provided on the panel bracket, the fixing hole is in an elongated strip shape, and the limiting column cooperates with the fixing hole.

[0015] Optionally, a chamber is provided inside the base plate, and a plurality of ribs are provided in the chamber, wherein one end of some of the ribs abuts against the inner wall of the chamber, and the plurality of ribs abutting against the inner wall of the chamber divide the interior of the chamber into a plurality of liquid cooling areas, and the plurality of liquid cooling areas are connected in sequence, and liquid cooling interfaces are provided on the liquid cooling areas on both sides near the width direction of the base plate, and the plurality of ribs in each of the liquid cooling areas are evenly spaced along the width direction of the base plate.

[0016] Optionally, a through hole is formed on the upper cover, and the fuse box extends to the outside of the upper cover through the through hole.

[0017] The present application also provides an electrical device, including the battery pack.

[0018] The beneficial effects of the battery pack and the electrical equipment of the present application include, for example: in order to make the assembly and maintenance process of the battery pack easier, a battery pack is designed, the battery pack includes an upper cover, a lower box, a panel assembly and a battery module, the upper cover and the lower box are connected, and a receiving cavity is formed between the upper cover and the lower box, the battery module is arranged in the receiving cavity, the panel assembly includes a panel bracket, a fuse box and a plug-in, the fuse box and the plug-in are both arranged on the panel bracket, and the panel bracket is connected to the lower box. By dividing the battery pack into four modules, namely, the upper cover, the lower box, the panel assembly and the battery module, when assembling the battery pack, it is only necessary to install the battery module as a whole in the receiving cavity formed between the upper cover and the lower box, and connect the panel bracket provided with the fuse box and the plug-in to the lower box to complete the assembly of the battery pack. When the battery pack needs to be maintained, it is only necessary to disassemble the four modules, namely, the upper cover, the lower box, the panel assembly and the battery module, for separate maintenance. The modular design makes the assembly and maintenance process of the battery pack easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 An exploded view of a battery pack in an embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the upper cover in an embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of the lower box in the embodiment of the present application;

[0023] Figure 4 This is an exploded view of the lower box in the embodiment of the present application;

[0024] Figure 5 This is a cross-sectional view of the lower box body in the embodiment of the present application;

[0025] Figure 6 It is a partial schematic diagram of a battery pack in an embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of a panel assembly from a first viewing angle in an embodiment of the present application;

[0027] Figure 8 It is a schematic diagram of a second viewing angle of the panel assembly in an embodiment of the present application.

[0028] Icons: 100-upper cover; 110-top plate; 111-groove; 120-first side plate; 130-second side plate; 140-flange; 141-convex rib; 150-front cover; 151-explosion-proof valve; 160-through hole;

[0029] 200-lower box; 210-bottom plate; 211-rib; 212-liquid cooling interface; 213-block; 220-side beam; 230-cross beam; 231-carrying platform; 240-module mounting beam; 250-mounting bracket; 251-limiting column;

[0030] 300-panel assembly; 310-panel bracket; 311-fixing hole; 312-positive copper bar; 313-total positive copper bar; 314-total negative copper bar; 315-fire detector; 316-fire interface; 317-battery management unit; 320-fuse box; 321-front cover; 322-mounting seat; 323-protective cover; 330-connector; 331-high voltage connector; 332-communication connector;

[0031] 400-Battery module. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application.

[0036] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0037] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0038] The inventor of the present application has found that in the assembly process of some existing battery packs, the lower box is used as the installation base, and the plug-in parts, fuses, battery cells, etc. are installed one by one on the lower box, and finally the upper cover is encapsulated to form a battery pack. This assembly process is relatively cumbersome and inconvenient for the maintenance of various components in the battery pack. The embodiments of the present application provide a battery pack that at least solves the above technical problems.

[0039] Please refer to Figure 1 The battery pack provided in the embodiment of the present application includes an upper cover 100, a lower box body 200, a panel assembly 300 and a battery module 400. The upper cover 100 and the lower box body 200 are connected, and a receiving cavity is formed between the upper cover 100 and the lower box body 200. The battery module 400 is arranged in the receiving cavity. The panel assembly 300 includes a panel bracket 310, a fuse box 320 and a connector 330. The fuse box 320 and the connector 330 are both arranged on the panel bracket 310, and the panel bracket 310 is connected to the lower box body 200.

[0040] By dividing the battery pack into four modules, namely the upper cover 100, the lower box 200, the panel assembly 300 and the battery module 400, when assembling the battery pack, it is only necessary to install the battery module 400 as a whole in the accommodating cavity formed between the upper cover 100 and the lower box 200, and connect the panel bracket 310 provided with the fuse box 320 and the plug-in part 330 to the lower box 200 to complete the assembly of the battery pack. When the battery pack needs to be maintained, it is only necessary to disassemble the four modules, namely the upper cover 100, the lower box 200, the panel assembly 300 and the battery module 400, for separate maintenance. The modular design makes the assembly and maintenance process of the battery pack easier.

[0041] Please refer to Figure 2In this embodiment, the upper cover 100 includes a top plate 110, two first side plates 120 and two second side plates 130, the two first side plates 120 are relatively arranged in the length direction of the top plate 110, and the two second side plates 130 are relatively arranged in the width direction of the top plate 110, the two first side plates 120 and the two second side plates 130 are all connected to the top plate 110, and the two first side plates 120 and the two second side plates 130 are all connected to the lower box body 200; a plurality of grooves 111 are arranged at intervals on the top plate 110, one end of some of the grooves 111 extends to one of the second side plates 130 in the width direction of the top plate 110, and one end of another portion of the grooves 111 extends to the other second side plate 130 in the width direction of the top plate 110.

[0042] It should be noted that the tops of the two first side panels 120 and the two second side panels 130 are connected to the top panel 110, the bottoms of the two first side panels 120 and the two second side panels 130 are connected to the lower box body 200, and the first side panels 120 and the second side panels 130 are connected to each other.

[0043] The groove 111 whose one end extends to one of the second side plates 130 in the width direction of the top plate 110 and the groove 111 whose one end extends to the other second side plate 130 in the width direction of the top plate 110 are alternately arranged in the length direction of the top plate 110. On the one hand, the arrangement of multiple grooves 111 improves the structural rigidity of the upper cover 100. On the other hand, the groove 111 whose one end extends to one of the second side plates 130 in the width direction of the top plate 110 can collect condensed water and drain it to one of the second side plates 130; the groove 111 whose one end extends to the other second side plate 130 in the width direction of the top plate 110 can collect condensed water and drain it to the other second side plate 130, wherein the battery pack is mainly used to collect condensed water generated by another battery pack located above itself in the battery cluster.

[0044] In this embodiment, flanges 140 are disposed at the bottom of the two second side plates 130 . A rib 141 is disposed on each flange 140 . The rib 141 is close to one of the first side plates 120 .

[0045] Two ribs 141 are provided on each flange 140, and the two ribs 141 are respectively close to the two first side panels 120. The ribs 141 are provided at positions close to the first side panels 120. The ribs 141 can block condensed water flowing through the second side panel 130 to the flange 140, so as to prevent the condensed water from flowing to the high pressure and communication connections, thereby improving safety.

[0046] In addition, in order to facilitate the installation of the upper cover 100, flange flanges 140 are also provided at the bottom of the two first side panels 120. The flange flanges 140 are connected to each other and surround the upper cover 100. The flange flanges 140 are connected to the lower box body 200 by fasteners such as bolts.

[0047] Please refer to Figure 3-Figure 6 In this embodiment, the lower box body 200 includes a bottom plate 210, two side beams 220 and two cross beams 230. The two side beams 220 are relatively arranged in the width direction of the bottom plate 210, and the two cross beams 230 are relatively arranged in the length direction of the bottom plate 210. The two side beams 220 are connected to the bottom plate 210, and each cross beam 230 is connected to the two side beams 220 at the same time. The two side beams 220 and the two cross beams 230 are all connected to the upper cover 100.

[0048] It should be noted that the two side beams 220 and the two cross beams 230 are arranged around the bottom plate 210 , and the two side beams 220 and the two cross beams 230 are connected to the flange 140 by fasteners such as bolts.

[0049] In this embodiment, a supporting platform 231 is provided on the surface of one of the beams 230 facing the other beam 230, and the lower box body 200 includes a module mounting beam 240, and the two ends of the module mounting beam 240 are respectively connected to the two side beams 220, and the module mounting beam 240 and the supporting platform 231 jointly support the battery module 400.

[0050] The top surface of the supporting platform 231 and the top surface of the module mounting beam 240 are both lower than the top surface of the cross beam 230. When installing the battery module 400, the battery module 400 is simultaneously supported on the top surface of the supporting platform 231 and the top surface of the module mounting beam 240, and the battery module 400 is simultaneously fixed to the supporting platform 231 and the module mounting beam 240 by fasteners such as bolts.

[0051] In this embodiment, the lower box 200 includes a mounting bracket 250, which is disposed on the bottom plate 210, and the panel bracket 310 is connected to the mounting bracket 250. The mounting bracket 250 is located between the module mounting beam 240 and the cross beam 230 close to the module mounting beam 240, so as to facilitate the installation of the panel bracket 310.

[0052] The mounting bracket 250 is provided with a limiting column 251 , and the panel bracket 310 is provided with a fixing hole 311 . The fixing hole 311 is in a long strip shape, and the limiting column 251 matches with the fixing hole 311 .

[0053] It should be pointed out that the limiting column 251 passes through the fixing hole 311 from bottom to top, and the position of the panel bracket 310 is preliminarily limited when the panel bracket 310 is installed. The fixing hole 311 is set to be a long strip, so that the panel bracket 310 can move a certain distance in the length direction of the base plate 210. When the panel bracket 310 is fastened to the first side plate 120 close to itself by bolts, the limiting column 251 can move relative to the fixing hole 311, and the fixing hole 311 plays a role in absorbing tolerance.

[0054] In this embodiment, a chamber is provided inside the base plate 210, and a plurality of ribs 211 are provided in the chamber, wherein one end of some of the ribs 211 abuts against the inner wall of the chamber, and the plurality of ribs 211 abutting against the inner wall of the chamber divide the interior of the chamber into a plurality of liquid cooling areas, and the plurality of liquid cooling areas are connected in sequence, and liquid cooling interfaces 212 are provided on the liquid cooling areas on both sides of the width direction of the base plate 210, and the plurality of ribs 211 in each liquid cooling area are evenly spaced along the width direction of the base plate 210.

[0055] The bottom plate 210 is provided with blocks 213 at both ends in its length direction, wherein one end of some ribs 211 abuts against one of the blocks 213; a plurality of ribs 211 abutting against the block 213 divide the interior of the chamber into a plurality of liquid cooling areas; a liquid cooling joint is provided on the bottom plate 210 and is connected to the interior of the chamber, wherein one liquid cooling interface 212 is a liquid cooling inlet, and the other liquid cooling interface 212 is a liquid cooling outlet, after the coolant is introduced into the liquid cooling inlet, the coolant meanders in a plurality of liquid cooling areas, and the flow path of the coolant in a single liquid cooling area is between adjacent ribs 211, so that the coolant flows more evenly in the chamber, and the heat dissipation is more uniform.

[0056] Exemplarily, the number of ribs 211 abutting against the block 213 is three, one end of the rib 211 located in the middle abuts against one of the block blocks 213, and one end of the ribs 211 located on both sides abuts against another block 213. The three ribs 211 divide the interior of the chamber into four liquid cooling areas, and the two liquid cooling interfaces 212 are respectively located in the two liquid cooling areas on both sides of the width direction of the base plate 210. After the coolant is introduced into the liquid cooling inlet, the coolant flows in the four liquid cooling areas to achieve heat dissipation.

[0057] It is understandable that the number of the ribs 211 abutting against the block 213 may be determined according to actual working conditions. For example, the number of the ribs 211 abutting against the block 213 may be two or more than four.

[0058] A thermally conductive structural adhesive is provided on the surface of the bottom plate 210 facing the top plate 110. When the battery module 400 is fixed to the support platform 231 and the module mounting beam 240 at the same time by fasteners such as bolts, the bottom of the battery module 400 is in full contact with the thermally conductive structural adhesive. The heat generated by the battery module 400 during operation can be transmitted to the bottom plate 210 through the thermally conductive structural adhesive, and then the heat is taken away by the liquid cooling area in the bottom plate 210 to achieve heat dissipation.

[0059] In this embodiment, a through hole 160 is formed on the upper cover 100 , and the fuse box 320 extends to the outside of the upper cover 100 through the through hole 160 .

[0060] The through hole 160 is formed on one of the first side plates 120 , and the fuse box 320 extends to the outside of the first side plate 120 through the through hole 160 . By placing the fuse box 320 outside, the space inside the battery pack can be saved, thereby improving the space utilization of the accommodating cavity.

[0061] Please refer to Figure 7 , Figure 8 In this embodiment, the connector 330 includes a high-voltage connector 331 and a communication connector 332, both of which are arranged on the panel bracket 310, and the panel bracket 310 is also provided with a positive copper bus 312, a total positive copper bus 313, a total negative copper bus 314, a fire detector 315, a fire interface 316, a battery management unit 317 and a communication harness; the fuse box 320 includes a front cover 321, a mounting seat 322 and a protective cover 323, the mounting seat 322 is arranged on the panel bracket 310, and the front cover 321 and the protective cover 323 are respectively arranged on the front and rear sides of the mounting seat 322; in addition, Figure 1 In the embodiment, a front cover plate 150 is disposed on the first side plate 120 having a through hole 160 , and an explosion-proof valve 151 is disposed on the front cover plate 150 . The front cover plate 150 can shield the fire detector 315 and the battery management unit 317 .

[0062] The embodiments of the present application also provide an electrical device, including the above-mentioned battery pack. For example, the electrical device may be a vehicle, a ship, a spacecraft, etc. The vehicle may be a fuel vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0063] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A battery pack, characterized in that: It includes an upper cover, a lower box, a panel assembly and a battery module. The upper cover is connected to the lower box, and a receiving cavity is formed between the upper cover and the lower box. The battery module is arranged in the receiving cavity. The panel assembly includes a panel bracket, a fuse box and a connector. The fuse box and the connector are both arranged on the panel bracket. The panel bracket is connected to the lower box.

2. The battery pack according to claim 1, characterized in that: The upper cover comprises a top plate, two first side plates and two second side plates, the two first side plates are arranged opposite to each other in the length direction of the top plate, the two second side plates are arranged opposite to each other in the width direction of the top plate, the two first side plates and the two second side plates are connected to the top plate, and the two first side plates and the two second side plates are connected to the lower box body; A plurality of grooves are arranged at intervals on the top plate, one end of some of the grooves extends to one of the second side plates in the width direction of the top plate, and one end of another portion of the grooves extends to another second side plate in the width direction of the top plate.

3. The battery pack according to claim 2, characterized in that: The bottoms of the two second side plates are each provided with a flange, each of the flanges is provided with a convex rib, and the convex rib is close to one of the first side plates.

4. The battery pack according to claim 1, characterized in that: The lower box body includes a bottom plate, two side beams and two cross beams. The two side beams are arranged opposite to each other in the width direction of the bottom plate, and the two cross beams are arranged opposite to each other in the length direction of the bottom plate. The two side beams are connected to the bottom plate, and each cross beam is connected to the two side beams at the same time. The two side beams and the two cross beams are connected to the upper cover.

5. The battery pack according to claim 4, characterized in that: A bearing platform is provided on the surface of one of the beams facing the other beam, and the lower box body includes a module mounting beam, both ends of the module mounting beam are respectively connected to the two side beams, and the module mounting beam and the bearing platform jointly support the battery module.

6. The battery pack according to claim 5, characterized in that: The lower box body comprises a mounting bracket, the mounting bracket is arranged on the bottom plate, and the panel bracket is connected to the mounting bracket.

7. The battery pack according to claim 6, characterized in that: The mounting bracket is provided with a limiting column, and the panel bracket is provided with a fixing hole, the fixing hole is in an elongated strip shape, and the limiting column matches with the fixing hole.

8. The battery pack according to claim 4, characterized in that: A chamber is provided inside the base plate, and a plurality of ribs are provided in the chamber, wherein one end of some of the ribs abuts against the inner wall of the chamber, and the plurality of ribs abutting against the inner wall of the chamber divide the interior of the chamber into a plurality of liquid cooling areas, and the plurality of liquid cooling areas are connected in sequence, and liquid cooling interfaces are provided on the liquid cooling areas near both sides of the base plate in the width direction, and the plurality of ribs in each of the liquid cooling areas are evenly spaced along the width direction of the base plate.

9. The battery pack according to claim 1, characterized in that: The upper cover is provided with a through hole, and the fuse box extends to the outside of the upper cover through the through hole.

10. An electrical device, characterized in that: A battery pack comprising any one of claims 1 to 9.

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