Power distribution device and battery pack

Abstract

The invention belongs to the technical field of power batteries, and discloses a power distribution device and a battery pack. The power distribution device comprises a BDU assembly, a BMS assembly, a heat conduction piece and a cooling module. Wherein the BDU assembly is arranged at an installation position, and heat dissipation holes are formed in the BDU assembly and used for heat dissipation; the BMS assembly is arranged in the BDU assembly, and the BMS assembly is in communication connection with the BDU assembly; the heat conduction piece is arranged at the bottom end of the BDU assembly; the cooling module is arranged at the installation position, and the heat conduction piece is located on the cooling module so that the cooling module can conduct heat dissipation on the BDU assembly and the BMS assembly. The power distribution device is high in heat dissipation efficiency and good in heat dissipation effect. The battery pack comprises a shell and a power distribution device, and the power distribution device is arranged in the shell and electrically connected with an external power source. The power distribution device is applied to the battery pack, and the service life can be effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a power distribution device and a battery pack. Background Art

[0002] With the advancement of science and technology, power batteries are being used more and more widely. In the prior art, most BDU components of power distribution devices use natural cooling to dissipate heat. However, when BDU components are used for a long time or work under high ambient temperature conditions, the heat dissipation efficiency will be greatly reduced. If the heat cannot be dissipated in time, the temperature of the BDU components will rise suddenly and be damaged.

[0003] Therefore, there is an urgent need for a power distribution device and a battery pack to solve the problem of low heat dissipation efficiency of BDU components and easy damage of equipment. Summary of the invention

[0004] An object of the present invention is to provide a power distribution device to solve the problem that the heat dissipation effect of BDU components is poor and the equipment is easily damaged.

[0005] To achieve this object, the present invention adopts the following technical solutions: A power distribution device, comprising: A BDU component is arranged at the installation position, and a heat dissipation hole is arranged on the BDU component, and the heat dissipation hole is used for heat dissipation; A BMS component is disposed in the BDU component, and the BMS component is communicatively connected with the BDU component; A heat conducting member, disposed at the bottom end of the BDU assembly; The cooling module is arranged at the installation position, and the heat conductive member is located on the cooling module, so that the cooling module can dissipate heat for the BDU component and the BMS component.

[0006] Preferably, a fuse is disposed inside the BDU component, and the fuse is disposed at the bottom end of the BDU component.

[0007] Preferably, the heat dissipation hole is arranged at the fuse.

[0008] Preferably, a plurality of heat dissipation holes are arranged at intervals.

[0009] Preferably, the BMS component comprises a relay, and a contact of the relay is arranged toward the heat conductor.

[0010] Preferably, the cooling module is liquid-cooled.

[0011] Preferably, the BDU component is detachably connected to the BMS component.

[0012] Preferably, the BMS component is integrated into the BDU component.

[0013] Preferably, the heat conducting member is a heat conducting pad.

[0014] Another object of the present invention is to provide a battery pack to reduce manufacturing difficulty and manufacturing cost and increase service life.

[0015] To achieve this object, the present invention adopts the following technical solutions: A battery pack, characterized in that it includes a shell and a power distribution device, wherein the power distribution device is arranged in the shell and is electrically connected to an external power source.

[0016] Beneficial effects of the present invention: The present invention discloses a power distribution device. The power distribution device includes a BDU component, a BMS component, a heat conductor and a cooling module. The BDU component is arranged at an installation position, and a heat dissipation hole is arranged on the BDU component, and the heat dissipation hole is used for heat dissipation; the BMS component is arranged in the BDU component, and the BMS component is communicatively connected with the BDU component; the heat conductor is arranged at the bottom end of the BDU component; the cooling module is arranged at the installation position, and the heat conductor is located on the cooling module, so that the cooling module can dissipate heat for the BDU component and the BMS component. The power distribution device has high heat dissipation efficiency and good heat dissipation effect, and can be used for a long time.

[0017] The present invention discloses a battery pack, which includes a housing and a power distribution device, wherein the power distribution device is arranged in the housing and is electrically connected to an external power source. The battery pack uses the power distribution device to effectively increase its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the power distribution device provided by the present invention.

[0019] Figure 2 It is a first structural schematic diagram of the power distribution device provided by the present invention.

[0020] Figure 3 It is a second structural schematic diagram of the power distribution device provided by the present invention.

[0021] In the figure: 10. BDU components; 11. Heat dissipation holes; 20. BMS components; 21. relay; 211. contact; 212. copper busbar; 30. Heat conducting parts. DETAILED DESCRIPTION

[0022] The present invention will be 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 parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0023] 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.

[0024] In the present invention, 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.

[0025] In the description of this embodiment, the terms "upper", "lower", "right", etc., 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 simplification of 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 limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0026] This embodiment provides a battery pack, which includes a housing and a power distribution device, wherein the power distribution device is disposed in the housing and is electrically connected to an external power source. However, the power distribution device in the prior art has low heat dissipation efficiency, and when working for a long time or in a high temperature environment, the temperature rises suddenly and the device is damaged.

[0027] In order to solve the above technical problems, this embodiment also provides a power distribution device, such as Figure 1-Figure 3As shown, the power distribution device includes a BDU (Battery Disconnect Unit) component 10, a BMS (Battery Management System) component 20, a heat conductor 30 and a cooling mode, wherein the BDU component 10 is arranged at the installation position, and a heat dissipation hole 11 is arranged on the BDU component 10, and the heat dissipation hole 11 is used for heat dissipation; the BMS component 20 is arranged in the BDU component 10, and the BMS component 20 is communicatively connected with the BDU component 10; the heat conductor 30 is arranged at the bottom end of the BDU component 10; the cooling module is arranged at the installation position, and the heat conductor 30 is located on the cooling module, so that the cooling module can dissipate heat for the BDU component 10 and the BMS component 20. In the above structure, the BDU component 10 is provided with a heat dissipation hole 11, which can dissipate heat for itself and the BMS component 20 in time; in addition, a heat conductor 30 is also provided at the bottom of the BDU component 10, and the heat conductor 30 quickly transfers the heat generated by the BDU component 10 and the BMS component 20 that is not dissipated through the heat dissipation hole 11 to the cooling module, thereby ensuring timely and sufficient heat dissipation of the interior of the entire power distribution device, thereby extending the service life and avoiding damage to the equipment.

[0028] To ensure safe use, a fuse is provided inside the BDU assembly 10, and the fuse is provided at the bottom of the BDU assembly 10. This structure can not only ensure the power supply safety of the entire device, but also transfer the heat of the fuse to the cooling module more easily, thereby avoiding the internal temperature being too high after a long period of normal operation, and the fuse being blown, thereby ensuring normal power distribution operation.

[0029] In addition, if Figure 3 As shown, the heat dissipation hole 11 is arranged at the fuse. This arrangement enables the heat near the fuse to be dissipated in time through the heat dissipation hole 11, thereby ensuring the timeliness of heat dissipation. Furthermore, a plurality of heat dissipation holes 11 are arranged at intervals. This arrangement can improve the heat dissipation efficiency and ensure a good heat dissipation effect.

[0030] In addition, if Figure 1 and Figure 3As shown, the BMS component 20 includes a relay 21, and the contact 211 of the relay 21 is arranged toward the heat conductor 30. Since the relay 21 mainly transmits electrical signals through the contact 211, the heat generated is also mostly concentrated on the contact 211, and the arrangement of the contact 211 toward the heat conductor 30 can make the heat at the contact 211 reach the heat conductor 30 through a shorter path, thereby improving the heat dissipation efficiency, ensuring a good heat dissipation effect, and further increasing the service life of the power distribution device. It is worth noting that the contact 211 of the relay 21 corresponds to the overlapping copper bus 212 for current carrying, and the contact 211 is arranged close to the heat conductor 30, which indirectly enables the copper bus 212 to be close to the heat conductor 30, further facilitating heat dissipation, thereby improving the heat dissipation efficiency.

[0031] It is worth noting that in this embodiment, the cooling module is liquid-cooled. Liquid has higher thermal conductivity. Compared with traditional air-cooled heat dissipation, liquid cooling has higher heat dissipation efficiency and lower noise. This can more effectively reduce the temperature of the power distribution device and improve its performance and service life. In addition, in this embodiment, the liquid used is water, which is very common and has low cost. In other embodiments, mineral oil or electronic fluorinated liquid can also be used instead of water, which can be selected according to actual needs and is not specifically limited here.

[0032] It is further explained that in this embodiment, the heat conducting member 30 is a heat conducting pad. The heat conducting pad has good viscosity, flexibility, compressibility and high thermal conductivity, which can not only produce a good heat conducting effect, but also provide a stable support effect for the BDU assembly 10. In other embodiments, a heat conducting gel can also be used instead of the heat conducting pad.

[0033] In addition, the BDU assembly 10 and the BMS assembly 20 are detachably connected. This method can facilitate the maintenance and parts replacement of the BDU assembly 10 or the BMS assembly 20, and is also convenient for installation. It should be noted here that the BDU assembly 10 and the BMS assembly 20 can be connected by any method such as snap connection or threaded connection, as long as the connection can be ensured to be firm and convenient for disassembly and assembly, and no other restrictions are made in this embodiment.

[0034] In addition, in the prior art, the BMS component 20 is placed inside the battery pack and the BDU component 10, and the controlled device needs to be switched through a wiring harness or connector, which will result in a large number of control wiring harnesses, collection wiring harnesses, etc. being stacked inside the distribution device, which not only wastes internal space, but also increases the design difficulty and increases the manufacturing and use costs.

[0035] To solve this technical problem, Figure 1As shown, the BMS component 20 is integrated in the BDU component 10. This arrangement can eliminate the need for connector and wiring harness switching in traditional designs, and can directly control or collect internal signals through the BDU component 10 and the BMS component 20 through selection connection, thereby reducing design difficulty and manufacturing cost, and further improving convenience of use.

[0036] In summary, the power distribution device in this embodiment has high internal heat dissipation efficiency, good heat dissipation effect, and long service life.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A power distribution device, characterized in that: include: A BDU component (10) is arranged at an installation position, and a heat dissipation hole (11) is provided on the BDU component (10), and the heat dissipation hole (11) is used for heat dissipation; A BMS component (20) is disposed in the BDU component (10), and the BMS component (20) is communicatively connected to the BDU component (10); A heat conducting member (30) is arranged at the bottom end of the BDU assembly (10); A cooling module is arranged at the installation position, and the heat conducting member (30) is located on the cooling module, so that the cooling module can dissipate heat for the BDU component (10) and the BMS component (20).

2. The power distribution device according to claim 1, characterized in that: A fuse is arranged inside the BDU component (10), and the fuse is arranged at the bottom end of the BDU component (10).

3. The power distribution device according to claim 2, characterized in that: The heat dissipation hole (11) is arranged at the fuse.

4. The power distribution device according to claim 3, characterized in that: A plurality of heat dissipation holes (11) are arranged at intervals.

5. The power distribution device according to any one of claims 1 to 4, characterized in that: The BMS component (20) comprises a relay (21), wherein a contact (211) of the relay (21) is arranged toward the heat conducting member (30).

6. The power distribution device according to any one of claims 1 to 4, characterized in that: The cooling module is liquid-cooled.

7. The power distribution device according to any one of claims 1 to 4, characterized in that: The BDU component (10) is detachably connected to the BMS component (20).

8. The power distribution device according to any one of claims 1 to 4, characterized in that: The BMS component (20) is integrated into the BDU component (10).

9. The power distribution device according to any one of claims 1 to 4, characterized in that: The heat conducting member (30) is a heat conducting pad.

10. A battery pack, characterized in that: It comprises a housing and a power distribution device as claimed in any one of claims 1 to 9, wherein the power distribution device is arranged in the housing and is electrically connected to an external power supply.

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