Battery pack circuit protection structure

Abstract

The utility model discloses a battery pack circuit protection structure relates to the field of automobile power battery. The battery pack circuit protection structure, including the shell body and the battery group of installing in the middle part of shell body, the both ends of shell body are provided with the battery PDU spare of electric connection with battery group respectively, and the outer wall of battery PDU spare is installed with the protection piece, and the protection piece is fixedly installed with shell body, and the inside of protection piece is provided with the hollow channel, and the cooling liquid pipeline is set up in shell body, and the cooling liquid pipeline is linked together with hollow channel. The battery pack circuit protection structure, through the integration of battery PDU spare in shell body, protects entire battery PDU spare, through setting up hollow channel in the inside of protection piece, hollow channel is connected with the cooling liquid pipeline on shell body on one hand, and the cooling protection of battery PDU spare, on the other hand, utilizes hollow channel and makes protection piece have the collapse space to protect battery PDU spare when the collision occurs and collapses and absorbs energy.

Description

Technical Field

[0001] This utility model relates to the field of automotive power battery technology, specifically a battery pack circuit protection structure. Background Technology

[0002] A battery PDU is an energy distribution and protection unit connected to a power battery. The power distribution unit is responsible for the energy distribution of the battery pack, distributing the energy of the battery pack to the vehicle's power system, auxiliary systems, and other electrical devices.

[0003] The existing power battery PDU of new energy vehicles is usually one PDU between the high voltage output of the battery pack and the front and rear electric drives. This type of architecture is not only expensive, but also requires a large layout space and poses a great risk to safety in a collision. In a collision, it is easily deformed by the subframe, which can lead to PDU failure or even fire and explosion. Therefore, a battery pack circuit protection structure is specially provided. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a battery pack circuit protection structure, which solves the safety risks associated with the existing external PDU solution for automotive power batteries.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery pack circuit protection structure, comprising an outer shell and a battery pack installed in the middle of the outer shell. Battery PDUs electrically connected to the battery pack are respectively disposed inside both ends of the outer shell. A protective component, made of aluminum alloy, is installed on the outer wall of the battery PDU. The protective component is fixedly installed to the outer shell. A hollow channel is provided inside the protective component to allow it to collapse and absorb energy during a collision to protect the battery PDU. A coolant pipe is provided in the outer shell, and the coolant pipe is connected to the hollow channel for heat dissipation of the battery PDU.

[0006] Preferably, a coolant circulation connector is fixedly embedded in the outer wall of the outer casing, and the coolant circulation connector is connected to the coolant pipe.

[0007] Preferably, a connecting hose is fixedly connected to the coolant pipe, and the other end of the connecting hose is connected to the hollow channel.

[0008] Preferably, cooling connectors are fixedly embedded at both ends of the protective component, and the two sets of connecting hoses are respectively connected to the two sets of cooling connectors.

[0009] Preferably, the protective component has triangular frames integrally formed at both ends, and the cooling connector is located in the triangular frames.

[0010] Preferably, a wire pass-through port is provided on one side of the triangular frame, and the connecting hose passes through the wire pass-through port and extends into the triangular frame.

[0011] Preferably, the inner side of the protective component has a connection port, through which the wires between the battery pack and the battery PDU pass.

[0012] Its beneficial effects are as follows: 1. The battery pack circuit protection structure integrates the battery PDU unit inside the outer casing of the battery pack, using the outer casing to protect the entire battery PDU unit. At the same time, a protective component is fixedly installed inside the outer casing, and the battery PDU unit is installed inside the protective component. A hollow channel is set inside the protective component. The hollow channel is connected to the coolant pipe on the outer casing to achieve cooling protection for the battery PDU unit. On the other hand, the hollow channel provides the protective component with a collapse space, thus forming a protective structure that can collapse and absorb energy, further protecting the battery PDU unit.

[0013] 2. The battery pack circuit protection structure has triangular frames integrally formed at both ends of the protective component. The triangular frames protect the connecting hoses between the coolant pipes and the hollow channel. The stable support effect of the triangle prevents minor collisions from squeezing and damaging the connecting hoses. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a cross-sectional view of the internal structure of the protective component of this utility model.

[0016] In the diagram: 1. Outer casing; 12. Coolant pipe; 13. Coolant circulation connector; 14. Connecting hose; 2. Battery pack; 3. Battery PDU; 4. Protective components; 42. Wiring port; 43. Triangular frame; 44. Hollow channel; 45. Connection port; 46. Cooling connector. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0019] This utility model discloses a battery pack circuit protection structure, according to the appendix. Figure 1 To be continued Figure 3 As shown, the device includes an outer casing 1 and a battery pack 2 installed in the middle of the outer casing 1. Battery PDU units 3, electrically connected to the battery pack 2, are respectively installed inside both ends of the outer casing 1. A protective component 4, made of aluminum alloy, is installed on the outer wall of the battery PDU unit 3. The protective component 4 is fixedly installed to the outer casing 1. A hollow channel 44 is provided inside the protective component 4 to allow it to collapse and absorb energy during a collision to protect the battery PDU unit 3. A coolant pipe 12 is provided in the outer casing 1, connected to the hollow channel 44, for heat dissipation of the battery PDU unit 3. The coolant flowing in the coolant pipe 12 is non-conductive cooling oil.

[0020] More specifically, a coolant circulation connector 13 is fixedly embedded in the outer wall of the outer casing 1. The coolant circulation connector 13 is connected to the coolant pipe 12. A one-way valve is provided in the coolant circulation connector 13 to ensure that the coolant can circulate in one direction.

[0021] More specifically, a connecting hose 14 is fixedly connected to the coolant pipe 12, and the other end of the connecting hose 14 is connected to the hollow channel 44. Cooling connectors 46 are fixedly embedded at both ends of the protective component 4. The two sets of connecting hoses 14 are respectively connected to the two sets of cooling connectors 46, which facilitates the assembly and connection of the connecting hoses 14.

[0022] More specifically, the protective component 4 has a triangular frame 43 integrally formed at both ends, the cooling connector 46 is located in the triangular frame 43, and a wire through hole 42 is opened on one side of the triangular frame 43. The connecting hose 14 passes through the wire through hole 42 and extends into the triangular frame 43. The triangular frame 43 is used to protect the connecting hose 14 between the coolant pipe 12 and the hollow channel 44. The stable support effect of the triangle is used to avoid the connecting hose 14 from being squeezed and damaged by slight collisions.

[0023] More specifically, the inner side of the protective component 4 is provided with a connection port 45, through which the wires between the battery pack 2 and the battery PDU component 3 pass, thereby facilitating the wire installation and connection between the battery pack 2 and the battery PDU component 3.

[0024] Working principle: This battery pack circuit protection structure integrates the battery PDU 3, which distributes power to the front and rear wheel axles, into the outer shell 1 of the battery pack. The outer shell 1 protects the entire battery PDU 3, improving its anti-collision performance. It also simplifies the design of the car chassis, eliminating the need for additional assembly space and protective structures for the battery PDU 3. Furthermore, a protective component 4 is fixed inside the outer shell 1, and the battery PDU 3 is installed inside the protective component 4. A hollow channel 44 is provided inside the protective component 4. This hollow channel 44 connects to the coolant pipe 12 on the outer shell 1, thus providing cooling protection for the battery PDU 3. Additionally, the hollow channel 44 provides a collapse space for the protective component 4, forming a collapse-energy-absorbing protective structure that further protects the battery PDU 3. More importantly, by integrally forming triangular frames 43 at both ends of the protective component 4, the connecting hose 14 between the coolant pipe 12 and the hollow channel 44 is protected by the triangular frames 43. The stable support effect of the triangle prevents minor collisions from squeezing and damaging the connecting hose 14.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A battery pack circuit protection structure, comprising a housing (1) and a battery pack (2) mounted in the middle of the housing (1), characterized in that, The outer casing (1) has battery PDU components (3) that are electrically connected to the battery pack (2) at both ends. The outer wall of the battery PDU component (3) is equipped with a protective component (4). The protective component (4) is fixedly installed with the outer casing (1). The protective component (4) has a hollow channel (44) inside, so that the protective component (4) can collapse and absorb energy during collision to protect the battery PDU component (3). The outer casing (1) has a coolant pipe (12) connected to the hollow channel (44) for heat dissipation of the battery PDU component (3).

2. The battery pack circuit protection structure according to claim 1, characterized in that, The outer wall of the outer shell (1) is fixedly embedded with a coolant circulation connector (13), which is connected to the coolant pipe (12).

3. The battery pack circuit protection structure according to claim 2, characterized in that, A connecting hose (14) is fixedly connected to the coolant pipe (12), and the other end of the connecting hose (14) is connected to the hollow channel (44).

4. The battery pack circuit protection structure according to claim 3, characterized in that, The protective component (4) has cooling connectors (46) fixedly embedded at both ends, and the two sets of connecting hoses (14) are respectively connected to the two sets of cooling connectors (46).

5. The battery pack circuit protection structure according to claim 4, characterized in that, The protective component (4) has a triangular frame (43) integrally formed at both ends, and the cooling connector (46) is located in the triangular frame (43).

6. The battery pack circuit protection structure according to claim 5, characterized in that, A wire pass-through port (42) is provided on one side of the triangular frame (43), and the connecting hose (14) passes through the wire pass-through port (42) and extends into the triangular frame (43).

7. The battery pack circuit protection structure according to claim 1, characterized in that, The inner side of the protective component (4) is provided with a connection port (45), and the wire between the battery pack (2) and the battery PDU component (3) passes through the connection port (45).

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