Battery pack and vehicle with same

Abstract

The utility model discloses a battery pack and a vehicle with the battery pack, the battery pack comprises a battery box, a battery module, an electric control assembly and a cold plate, the battery box comprises a box body and a bottom protective plate, and the bottom protective plate is detachably connected with the box body; the battery module is mounted in the battery box; the electric control assembly is mounted in the battery box and is electrically connected with the battery module; the plate is fixed on the lower surface of the battery module, and the cold plate is provided with a maintenance window opposite to the electric control assembly. According to the battery pack provided by the embodiment of the utility model, the cold plate is arranged on the upper side of the detachable underground protective plate, the cold plate is fixedly connected with the battery module, and the cold plate is provided with the maintenance window opposite to the electric control assembly; compared with the prior art, the electric control assembly can be maintained on the premise that the battery module and the cold plate are not disassembled, safety risks occurring in the battery module disassembling and assembling process can be well prevented, operation is easy and convenient, and the labor cost can be well saved.

Description

Technical Field

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

[0002] With the popularization of new energy vehicles, the maintenance and inspection of new energy vehicles are brought about. Among them, the maintenance and inspection of batteries is more important. However, in related technologies, the maintenance and inspection of batteries often requires the removal of batteries from new energy vehicles, and even the removal of battery modules inside the batteries. This not only increases labor costs, but also the process of disassembling and installing batteries is prone to safety risks. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery pack that is simple and convenient to repair and is not prone to safety risks.

[0004] According to an embodiment of the utility model, the battery pack includes: a battery box, the battery box includes a box body and a bottom guard plate, the bottom guard plate is detachably connected to the box body; a battery module, the battery module is installed in the battery box; an electronic control component, the electronic control component is installed in the battery box and is electrically connected to the battery module; a cold plate, the cold plate is fixed to the lower surface of the battery module, and the cold plate has a maintenance window opposite to the electronic control component.

[0005] According to the battery pack of the embodiment of the utility model, by setting the cold plate on the upper side of the removable bottom guard plate and fixing the cold plate to the battery module, and setting a maintenance window on the cold plate that can be opposite to the electronic control component, it is possible to repair the electronic control component without disassembling the battery module and the cold plate, which can better prevent the safety risks in the process of disassembling and assembling the battery module, and the operation is simple and convenient, which can better save labor costs.

[0006] In addition, the battery pack according to the utility model may also have the following additional technical features:

[0007] In some embodiments of the present invention, the electronic control component includes a BMS component, the BMS component is opposite to the maintenance window, the BMS includes a BMS shell and a BMS shell cover, the opening of the BMS shell is downward and is fixed in the box, and the BMS shell cover is detachably connected to the BMS shell for closing the opening.

[0008] In some embodiments of the utility model, the electronic control component includes a BDU component, which is installed in the box and opposite to the maintenance window. The BDU component includes a BDU, a BDU bracket and a welding bracket. The welding bracket is welded in the box, the BDU is detachably installed on the BDU bracket, and the BDU bracket is detachably installed on the welding bracket.

[0009] In some embodiments of the present invention, the box body includes a box cover and a box body, the box cover and the box body define a accommodating cavity opening downward, and the box cover is fixedly connected to the upper surface of the battery module.

[0010] In some embodiments of the present invention, the cold plate is fixed to the lower surface of the battery module by structural adhesive, and the box cover is fixed to the upper surface of the battery module by structural adhesive.

[0011] In some embodiments of the present invention, the box body and the box cover are fixedly connected by screws.

[0012] In some embodiments of the present invention, the box body and the bottom guard plate are fixedly connected by screws.

[0013] In some embodiments of the present invention, the outer periphery of the cold plate is clamped between the box body and the bottom guard plate, the cold plate has screw holes allowing screws to pass through, and a seal is provided between the cold plate and the bottom guard plate.

[0014] In some embodiments of the present invention, the width of the seal is D, satisfying: D ≥ 10 mm.

[0015] The utility model also provides a vehicle having the battery pack of the above embodiment.

[0016] According to the vehicle of the embodiment of the utility model, by being provided with the battery pack of the above embodiment, the battery pack can be well inspected and repaired, the driving of the vehicle can be ensured, and the maintenance efficiency of the vehicle can be improved.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 Detailed description of the invention: FIG. 1 is an exploded view of a battery pack according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of a cold plate according to an embodiment of the utility model.

[0021] Figure 3 It is a schematic structural diagram of the BMS housing and the BMS cover of a BMS assembly according to an embodiment of the utility model.

[0022] Figure 4 It is an exploded view of a BDU assembly according to an embodiment of the utility model.

[0023] Figure 5 It is a structural schematic diagram of a BDU component according to an embodiment of the utility model.

[0024] Figure 6 It is a structural schematic diagram of a BDU component according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] Battery pack 100,

[0027] Battery box 1, box body 10, box cover 101, box body 102, bottom guard plate 11,

[0028] Battery module 2,

[0029] Electric control component 3, BMS component 31, BMS housing 311, BMS housing cover 312,

[0030] BDU assembly 32, BDU 321, BDU bracket 322, welding bracket 323,

[0031] Cold plate 4, screw hole 41, maintenance window 42, seal 5,

[0032] Screw 61, nut 62. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, 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 on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 utility model can be understood according to specific circumstances.

[0036] Reference below Figure 1-Figure 6 A battery pack 100 according to an embodiment of the present invention is described.

[0037] like Figure 1 and Figure 2 As shown, the battery pack 100 according to the embodiment of the utility model includes a battery box 1, a battery module 2, an electronic control component 3 and a cold plate 4. The battery box 1 includes a box body 10 and a bottom guard plate 11. The bottom guard plate 11 is detachably connected to the box body 10. The battery module 2 is installed in the battery box 1. The electronic control component 3 is installed in the battery box 1 and is electrically connected to the battery module 2. In other words, the bottom guard plate 11 can be disassembled from the box body 10, which can realize the disassembly and assembly of the battery module 2 on the one hand, and on the other hand, when the electronic control component 3 needs to be repaired, the bottom guard plate 11 can be removed from the box body 10 to repair the electronic control component 3.

[0038] Further integration Figure 1 In the example shown, the bottom guard plate 11 can support the battery module 2, and the opening of the box body 10 is downward, and the bottom guard plate 11 can also close the opening of the box body 10, so that the battery module 2 and the electronic control component 3 are enclosed in the battery box 1, which can prevent the battery module 2 and the electronic control component 3 from being corroded by moisture and ensure the stability of the environment in the battery box 1.

[0039] Furthermore, the cold plate 4 can be fixed on the lower surface of the battery module 2, and the cold plate 4 has a maintenance window 42 opposite to the electric control component 3. That is to say, the battery pack 100 of the utility model cools the battery module 2 by bottom cooling, and when the electric control component 3 is repaired by removing the bottom guard plate 11, the maintenance window 42 opposite to the electric control component 3 is provided on the cold plate 4, so that the electric control component 3 can be repaired without removing the cold plate 4, and the operation is simple and convenient, and there is no need to disassemble the battery module 2, which can better prevent the risks in the process of disassembling and assembling the battery module 2, and can better save labor costs.

[0040] Therefore, according to the battery pack 100 of the embodiment of the utility model, by setting the cold plate 4 on the upper side of the removable bottom guard plate 11, and making the cold plate 4 fixedly connected to the battery module 2, and setting a maintenance window 42 on the cold plate 4 that can be opposite to the electronic control component 3, it is possible to repair the electronic control component 3 without disassembling the battery module 2 and the cold plate 4, which can better prevent the risks occurring during the disassembly and assembly of the battery module 2, and the operation is simple and convenient, which can better save labor costs.

[0041] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the electric control component 3 includes a BMS component 31, and the BMS component 31 is opposite to the maintenance window 42. The BMS component 31 includes a BMS shell 311 and a BMS shell cover 312. The opening of the BMS shell 311 is downward and fixed in the box body 10. The BMS shell cover 312 is detachably connected to the BMS shell 311 for closing the opening. In other words, the BMS (Battery Management System) can be installed in the BMS shell 311. When the BMS needs to be repaired, the bottom guard plate 11 can be disassembled first. Since the BMS component 31 is opposite to the maintenance window 42, the BMS shell cover 312 can be disassembled through the maintenance window 42. In this way, the BMS can be better repaired and the BMS can be better disassembled from the BMS shell 311 for replacement or repair. The operation is simple and convenient.

[0042] Optionally, the BMS shell cover 312 and the BMS housing 311 may be connected by screws 61 or by snap-fit ​​connection, etc., which is not limited here.

[0043] In some embodiments of the present invention, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the electronic control component 3 includes a BDU component 32, which is installed in the box body 10 and opposite to the maintenance window 42. The BDU component 32 includes a BDU321 (Battery Disconnect Unit), a BDU bracket 322 and a welding bracket 323. The welding bracket 323 is welded in the box body 10. The BDU321 is detachably installed on the BDU bracket 322, and the BDU bracket 322 is detachably installed on the welding bracket 323. That is to say, when repairing BDU321, the bottom guard plate 11 can be disassembled first. Since the BDU component 32 is opposite to the maintenance window 42, the BDU bracket 322 and the welding bracket 323 can be disassembled through the maintenance window 42, so that the BDU bracket 322 together with the BDU321 can be taken out from the box 10. The operation is simple and convenient. In addition, in the utility model, the BDU321 is installed in the box 10 through the BDU321 and the welding bracket 323, which can reduce the difficulty of installing the BDU321 and thereby reduce labor costs.

[0044] Optionally, the BDU bracket 322 and the welding bracket 323 may be connected by screws 61 or snap-fit ​​connections, etc., which are not limited here. Figure 4-Figure 6 In a specific example shown, screws can be inserted through the welding bracket 323 and the BDU bracket 322 in sequence from top to bottom, and then the leaked screws 61 can cooperate with the nuts 62 to fix the welding bracket 323 and the BDU bracket 322 together, making disassembly and assembly simple and convenient.

[0045] In some embodiments of the present invention, Figure 1 As shown, the box body 10 includes a box cover 101 and a box body 102, the box cover 101 and the box body 102 define a accommodating cavity with an opening facing downward, and the box cover 101 is fixedly connected to the upper surface of the battery module 2. That is to say, when the bottom guard plate 11 is disassembled, since the box cover 101 is fixed to the upper surface of the battery module 2, it is not easy for the battery module 2 to fall out of the box body 10. In this way, when the battery pack 100 is used in electrical equipment such as vehicles, it is not necessary to disassemble the battery pack 100, and the electronic control component 3 and the battery module 2 can be inspected or repaired directly on the vehicle. In addition, the box cover 101 is fixedly connected to the box body 102, and the box cover 101 is covered on the upper surface of the box body 102 in a cover-type manner. Therefore, the box body 102 can better support the box cover 101, so that the box cover 101 is not easy to deform or even damaged when bearing the weight of the battery module 2. In addition, the contact area between the box cover 101 and the upper surface of the battery module 2 is large. When the box cover 101 is fixedly connected to the battery module 2, the operating space is large and the difficulty of fixed connection is low, thereby reducing the production cost.

[0046] Optionally, the box cover 101 is fixed to the upper surface of the battery module 2 by means of structural adhesive. Thus, when the box cover 101 is fixedly connected to the battery module 2, the contact area between the box cover 101 and the upper surface of the battery module 2 is larger. Therefore, the coating area of ​​the structural adhesive is larger, which can ensure the reliability of the connection between the box cover 101 and the battery module 2.

[0047] Optionally, the cold plate 4 is fixed to the lower surface of the battery module 2 by means of structural adhesive. Thus, when the cold plate 4 is fixedly connected to the battery module 2, the contact area between the cold plate 4 and the lower surface of the battery module 2 is larger. Therefore, the coating area of ​​the structural adhesive is larger, which can ensure the reliability of the connection between the cold plate 4 and the battery module 2.

[0048] Optionally, the box body 102 and the box cover 101 are fixedly connected by screws 61, that is, the box body 102 and the box cover 101 can be fixedly connected by means of screws 61, or the box body 102 and the box cover 101 can be fixedly connected by means of structural adhesive and then fixedly connected by means of screws 61, which can further improve the connection strength between the box body 102 and the box cover 101, and because the box cover 101 and the upper surface of the battery module 2 are fixedly connected by means of structural adhesive, the structural adhesive can be applied between the box cover 101 and the box body 102, and between the box cover 101 and the upper surface of the battery module 2 at one time, which can also better improve the sealing of the battery pack 100.

[0049] Alternatively, if Figure 1 As shown, a sealing member 5 may be provided between the box body 102 and the box cover 101 for sealing.

[0050] In some embodiments of the utility model, the box body 10 and the bottom guard plate 11 are fixedly connected by screws 61. The method of disassembling and assembling the bottom guard plate 11 by means of the screws 61 can make the box body 10 and the bottom guard plate 11 more compact, and can reduce the difficulty of disassembling and assembling between the box body 10 and the bottom guard plate 11. In addition, when disassembling and assembling the bottom guard plate 11 by means of the screws 61, after the screws 61 pass through the bottom guard plate 11 and are screwed into the box body 10, the friction force and embedding force generated by the thread engagement can make the connection between the box body 10 and the bottom guard plate 11 very stable.

[0051] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the outer periphery of the cold plate 4 is clamped between the box body 10 and the bottom guard plate 11, and the cold plate 4 has a screw hole 41 allowing the screw 61 to pass through, that is, the screw 61 can pass through the bottom guard plate 11 and the cold plate 4 and then be fixedly connected to the box body 10. In this way, after the bottom guard plate 11 and the cold plate 4 are fixedly connected to the box body 10 by the screws 61, the battery module 2 can be better supported, and the gravity of the battery module 2 can be prevented from being completely supported on the bottom guard plate 11, thereby avoiding the problem of easy damage to the bottom guard plate 11.

[0052] Furthermore, if Figure 1 and Figure 2 As shown, a seal 5 is provided between the cold plate 4 and the bottom guard plate 11, that is, the outer periphery of the cold plate 4 is clamped between the box body 10 and the bottom guard plate 11, and the seal 5 is sealed between the cold plate 4 and the bottom guard plate 11, so that the battery box 1 can be better sealed and the difficulty of assembling the seal 5 can be reduced.

[0053] Optionally, the width of the seal 5 is D, satisfying: D ≥ 10 mm, that is, the width of the seal 5 can be increased to a certain extent, thereby improving the sealing effect of the seal 5. In an example, the width of the seal 5 can be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, etc., which is not limited here.

[0054] Optionally, reinforcing ribs may be stamped on the bottom guard plate 11 to improve the structural strength of the bottom guard plate 11 .

[0055] Optionally, the cover plate may be a flat plate, and reinforcing ribs may be stamped on the cover plate to improve the structural strength of the cover plate.

[0056] The present invention also provides a vehicle having the battery pack 100 of the above embodiment.

[0057] According to the vehicle of the embodiment of the utility model, by being provided with the battery pack 100 of the above embodiment, the battery pack 100 can be well inspected and repaired, thereby ensuring the driving of the vehicle and improving the inspection and maintenance efficiency of the vehicle.

[0058] Other structures and operations of the battery pack 100 and the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0059] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A battery box, the battery box comprising a box body and a bottom guard plate, the bottom guard plate being detachably connected to the box body; A battery module, wherein the battery module is installed in the battery box; An electric control component, the electric control component is installed in the battery box and is electrically connected to the battery module; A cold plate is fixed to the lower surface of the battery module, and the cold plate has a maintenance window opposite to the electronic control component.

2. The battery pack according to claim 1, characterized in that: The electric control component includes a BMS component, which is opposite to the maintenance window. The BMS includes a BMS shell and a BMS shell cover. The opening of the BMS shell is downward and is fixed in the box. The BMS shell cover is detachably connected to the BMS shell for closing the opening.

3. The battery pack according to claim 1, characterized in that: The electric control component includes a BDU component, which is installed in the box and opposite to the maintenance window. The BDU component includes a BDU, a BDU bracket and a welding bracket. The welding bracket is welded in the box. The BDU is detachably installed on the BDU bracket, and the BDU bracket is detachably installed on the welding bracket.

4. The battery pack according to claim 1, characterized in that: The box body comprises a box cover and a box body, wherein the box cover and the box body define a accommodating cavity opening downward, and the box cover is fixedly connected to the upper surface of the battery module.

5. The battery pack according to claim 4, characterized in that: The cold plate is fixed to the lower surface of the battery module by structural adhesive, and the box cover is fixed to the upper surface of the battery module by structural adhesive.

6. The battery pack according to claim 4, characterized in that: The box body and the box cover are fixedly connected by screws.

7. The battery pack according to claim 1, characterized in that: The box body and the bottom guard plate are fixedly connected by screws.

8. The battery pack according to claim 7, characterized in that: The outer periphery of the cold plate is sandwiched between the box body and the bottom guard plate. The cold plate has screw holes for allowing screws to pass through. A sealing member is arranged between the cold plate and the bottom guard plate.

9. The battery pack according to claim 8, characterized in that: The width of the seal is D, satisfying: D ≥ 10 mm.

10. A vehicle, characterized in that: A battery pack comprising any one of claims 1-9.

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