Vehicle battery pack and vehicle load power supply system

Abstract

The utility model relates to a vehicle battery pack and a vehicle load power supply system, and relates to the technical field of vehicle batteries, the vehicle battery pack comprises a battery pack body, and a first interface assembly, a second interface assembly and a third interface assembly arranged on the battery pack body, the battery pack body comprises a battery cell unit and a battery communication assembly, the first pole of the battery cell unit is connected with the first pole of the battery communication assembly; a first end of the first interface assembly is connected with a first pole of the battery cell unit, and a second end of the first interface assembly is used for connecting a first pole of a vehicle load assembly; the first end of the second interface assembly is connected with the second pole of the battery cell unit, and the second end of the second interface assembly is used for forming first connection with the second pole of the vehicle load assembly; the first end of the third interface assembly is connected with the second pole of the battery communication assembly, the second end of the third interface assembly is used for forming second connection with the second end of the second interface assembly, and the first connection and the second connection are synchronously formed and disconnected.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle battery technology, and more particularly to a vehicle battery pack and a vehicle load power supply system. Background Technology

[0002] Battery packs in vehicles, such as low-voltage lithium batteries, supply power to the vehicle's load components. In related technologies, even if the vehicle's load components are disconnected from the positive or negative terminal of the battery pack, the load components may still form a circuit with the battery pack via communication lines, potentially leading to a malfunction of the load components. Utility Model Content

[0003] To overcome the problems existing in related technologies, this disclosure provides a vehicle battery pack. The second terminal of the battery communication component 12 inside the battery pack is led out from the battery pack body 1 through the third interface component 4 and connected to the second end of the third interface component 4 on the battery pack body 1. The second end of the second interface component 3 is used to form a first connection with the second terminal of the vehicle load component 5, and the second end of the third interface component 4 is used to form a second connection with the second end of the second interface component 3. The formation and disconnection of the first connection and the second connection are synchronous, so that when the vehicle load component 5 is disconnected from the positive or negative terminal of the vehicle battery pack, the vehicle load component 5 and the vehicle battery pack cannot form a power supply circuit, thereby avoiding the failure of the vehicle load component 5.

[0004] According to a first aspect of the present disclosure, a vehicle battery pack is provided, comprising:

[0005] Battery pack body 1, and a first interface component 2, a second interface component 3 and a third interface component 4 disposed on the battery pack body 1;

[0006] The battery pack body 1 includes a cell unit 11 and a battery communication component 12, and the first terminal of the cell unit 11 is connected to the first terminal of the battery communication component 12.

[0007] The first end of the first interface component 2 is connected to the first pole of the battery cell 11, and the second end of the first interface component 2 is used to connect to the first pole of the vehicle load component 5.

[0008] The first end of the second interface component 3 is connected to the second pole of the battery cell 11, and the second end of the second interface component 3 is used to form a first connection with the second pole of the vehicle load component 5;

[0009] The first end of the third interface component 4 is connected to the second pole of the battery communication component 12, and the second end of the third interface component 4 is used to form a second connection with the second end of the second interface component 3. The formation and disconnection of the first connection and the second connection are synchronous.

[0010] Optionally, the first electrode is the positive electrode and the second electrode is the negative electrode.

[0011] Optionally, the battery communication component 12 includes an isolated power supply 121 and a battery communication module 122;

[0012] The first end of the isolation power supply 121 is connected to the first pole of the battery cell 11, and the second end of the isolation power supply 121 is connected to the first end of the battery communication module 122.

[0013] The second end of the battery communication module 122 and the third end of the isolated power supply 121 are both connected to the first end of the third interface component 4.

[0014] Optionally, the second end of the second interface component 3 is a female connector, and the second end of the third interface component 4 is used to connect with the second pole of the vehicle load component 5 to form a male connector, which is used to connect with the female connector.

[0015] Optionally, the second end of the second interface component 3 and the second end of the third interface component 4 are also used for grounding.

[0016] According to a second aspect of the present disclosure, a vehicle load power supply system is provided, including a vehicle load component 5 and a vehicle battery pack provided in the first aspect of the present disclosure.

[0017] The battery pack body 1 also includes a fourth interface component 6, the first end of which is connected to the communication end of the battery communication component 12, and the second end of which is connected to the communication end of the vehicle load component 5.

[0018] Optionally, the vehicle load assembly 5 includes a power distributor 51;

[0019] The first pole of the power distributor 51 is connected to the second end of the first interface component 2;

[0020] The second pole of the power distributor 51 forms the second connection with the second end of the second interface component 3;

[0021] The communication terminal of the power distributor 51 is connected to the communication terminal of the battery communication component 12.

[0022] Optionally, the vehicle load assembly 5 includes a controller 52;

[0023] The first terminal of the controller 52 is connected to the second terminal of the first interface component 2;

[0024] The second pole of the controller 52 and the second end of the second interface component 3 form the second connection;

[0025] The communication terminal of the controller 52 is connected to the communication terminal of the battery communication component 12.

[0026] Optionally, the vehicle load assembly 5 includes a power distributor 51 and a controller 52;

[0027] The first pole of the power distributor 51 is connected to the second end of the first interface component 2, and the output end of the power distributor 51 is connected to the first pole of the controller 52;

[0028] The communication terminal of the power distributor 51 is connected to the communication terminal of the battery communication component 12 and the communication terminal of the controller 52, respectively.

[0029] The second pole of the power distributor 51 and the second stage of the controller 52 form the second connection with the second end of the second interface component 3.

[0030] Optionally, the second end of the second interface component 3, the second end of the third interface component 4, and the second pole of the vehicle load component 5 converge at the first bus terminal and are grounded.

[0031] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0032] The vehicle battery pack includes a battery pack body 1, and a first interface component 2, a second interface component 3, and a third interface component 4 disposed on the battery pack body 1. The battery pack body 1 includes a cell unit 11 and a battery communication component 12, and the first terminal of the cell unit 11 is connected to the first terminal of the battery communication component 12.

[0033] The first end of the first interface component 2 is connected to the first pole of the cell unit 11, and the second end of the first interface component 2 is used to connect to the first pole of the vehicle load component 5; the first end of the second interface component 3 is connected to the second pole of the cell unit 11, and the second end of the second interface component 3 is used to form a first connection with the second pole of the vehicle load component 5; the first end of the third interface component 4 is connected to the second pole of the battery communication component 12, and the second end of the third interface component 4 is used to form a second connection with the second end of the second interface component 3, and the formation and disconnection of the first connection and the second connection are synchronous.

[0034] By leading the second terminal of the battery communication component 12 inside the battery pack out from the battery pack body 1 through the third interface component 4 and connecting it to the second end of the third interface component 4 on the battery pack body 1, and the second end of the second interface component 3 is used to form a first connection with the second terminal of the vehicle load component 5, and the second end of the third interface component 4 is used to form a second connection with the second end of the second interface component 3, and the formation and disconnection of the first connection and the second connection are synchronized, so that when the positive or negative terminal of the vehicle load component 5 is disconnected from the vehicle battery pack, the vehicle load component 5 and the vehicle battery pack cannot form a power supply circuit, thereby avoiding the failure of the vehicle load component 5.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0037] Figure 1 This is a schematic diagram illustrating the connection structure of a vehicle battery pack and its surrounding connectors according to an exemplary embodiment.

[0038] Figure 2 This is a schematic diagram of a vehicle load power supply system according to an exemplary embodiment.

[0039] Explanation of reference numerals in the attached figures

[0040] 1. Battery pack body; 11. Cell unit; 12. Battery communication component; 121. Isolated power supply; 122. Battery communication module; 2. First interface component; 3. Second interface component; 4. Third interface component; 5. Vehicle load component; 51. Power distributor; 52. Controller; 6. Fourth interface component. Detailed Implementation

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0042] Battery packs in vehicles, such as low-voltage lithium batteries, supply power to the vehicle's load components. In related technologies, the negative terminal of the battery communication module within the battery pack is directly connected to the cell unit. This means that even when the load component is disconnected from either the positive or negative terminal of the battery pack, the load component may still form a circuit with the battery pack through the communication line. For example, when the load component is disconnected from the negative terminal of the battery pack, current can flow from the positive terminal of the cell unit to the load component, then back to the battery communication module via the communication line, and finally back to the negative terminal of the cell unit, thus forming a circuit. This results in voltage remaining in the load component. When the load component is connected to the negative terminal of the battery pack, the voltage of the load component does not increase from 0 to the operating voltage, but rather from a lower initial voltage, potentially causing the load component to malfunction.

[0043] Based on the above-mentioned technical problems, this disclosure provides a vehicle battery pack and a vehicle load power supply system. By leading the second terminal of the battery communication component inside the battery pack out from the battery pack body through a third interface component and connecting it to the second end of the third interface component on the battery pack body, the second end of the second interface component is used to form a first connection with the second terminal of the vehicle load component, and the second end of the third interface component is used to form a second connection with the second end of the second interface component. The formation and disconnection of the first connection and the second connection are synchronous, so that when the positive or negative terminal of the vehicle load component is disconnected from the vehicle battery pack, the vehicle load component and the vehicle battery pack cannot form a power supply circuit, thereby avoiding failure of the vehicle load component.

[0044] Figure 1 This is a schematic diagram illustrating the connection structure of a vehicle battery pack and its peripheral connectors according to an exemplary embodiment, such as... Figure 1 As shown, the vehicle battery pack includes:

[0045] The battery pack body 1, and the first interface component 2, the second interface component 3 and the third interface component 4 disposed on the battery pack body 1.

[0046] The battery pack body 1 includes a cell unit 11 and a battery communication component 12. The cell unit 11 is used to provide electrical energy, and the battery communication component 12 is used for communication between the vehicle battery pack and other components, which may be vehicle load components 5. The first terminal of the cell unit 11 is connected to the first terminal of the battery communication component 12, which may be a positive terminal or a negative terminal.

[0047] The first end of the first interface component 2 is connected to the first pole of the battery cell unit 11, and the second end of the first interface component 2 is used to connect to the first pole of the vehicle load component 5, so that the first pole of the battery cell unit 11 and the first pole of the vehicle load component 5 can be connected through the first interface component 2. The second end of the first interface component 2 can be any end of a connector, either a male or a female connector. If the second end of the first interface component 2 is a female connector, the first pole of the vehicle load component 5 can be connected to a male connector; if the second end of the first interface component 2 is a male connector, the first pole of the vehicle load component 5 can be connected to a female connector, so that the connection between the second end of the first interface component 2 and the first pole of the vehicle load component 5 can be achieved through the insertion of the male and female connectors.

[0048] The first end of the second interface component 3 is connected to the second pole of the battery cell 11. The second pole can be either positive or negative; if the first pole is positive, the second pole is negative, and vice versa. The second end of the second interface component 3 forms a first connection with the second pole of the vehicle load component 5, enabling communication between the second pole of the battery cell 11 and the second pole of the vehicle load component 5. The second end of the second interface component 3 can be any end of a connector, either a male or female connector. If the second end of the second interface component 3 is a female connector, the second pole of the vehicle load component 5 can be connected to a male connector; if the second end of the second interface component 3 is a male connector, the second pole of the vehicle load component 5 can be connected to a female connector, thus forming the first connection between the second end of the second interface component 3 and the second pole of the vehicle load component 5 through the connection of the male and female connectors.

[0049] The first end of the third interface component 4 is connected to the second terminal of the battery communication component 12. The second end of the third interface component 4 is used to form a second connection with the second end of the second interface component 3, so that after the second terminal of the battery communication component 12 is pulled out of the battery pack body 1 through the third interface component 4, it can be connected to the second terminal of the cell unit 11 through the second interface component 3. Furthermore, the formation and disconnection of the first and second connections are synchronized. This ensures that if the vehicle load component 5 is disconnected from the positive or negative terminal of the vehicle battery pack, the vehicle load component 5 and the vehicle battery pack cannot form a power supply circuit, thereby preventing malfunctions of the vehicle load component 5.

[0050] Both the negative terminal of the battery cell unit 11 and the negative terminal of the battery communication component 12 can be grounded.

[0051] In one possible implementation, the first electrode is the negative electrode and the second electrode is the positive electrode. This allows the positive electrode of the battery communication component 12 to be pulled out of the battery pack body 1 and then connected to the positive electrode of the cell unit 11 inside the battery pack body 1 via the second interface component 3. This ensures that when the positive electrode of the vehicle load component 5 is disconnected from the positive electrode of the vehicle battery pack, the vehicle load component 5 and the vehicle battery pack cannot form a power supply circuit, thereby preventing the vehicle load component 5 from malfunctioning.

[0052] In one possible implementation, the first electrode is the positive electrode and the second electrode is the negative electrode. This is so that by pulling the negative electrode of the battery communication component 12 out of the battery pack body 1 and then connecting it to the negative electrode of the cell unit 11 inside the battery pack body 1 through the second interface component 3, the vehicle load component 5 and the vehicle battery pack cannot form a power supply circuit when the negative electrode of the vehicle load component 5 is disconnected from the vehicle battery pack, thereby preventing the vehicle load component 5 from malfunctioning.

[0053] In one possible implementation, the battery communication component 12 includes an isolated power supply 121 and a battery communication module 122.

[0054] The first end of the isolation power supply 121 is connected to the first pole of the battery cell unit 11, and the second end of the isolation power supply 121 is connected to the first end of the battery communication module 122.

[0055] The second terminal of the battery communication module 122 and the third terminal of the isolation power supply 121 are both connected to the first terminal of the third interface component 4, so that after the battery pack is pulled out through the third interface component 4, it is grounded, and then connected to the second terminal of the cell unit 11 through the second interface component 3. Optionally, the second terminal of the battery communication module 122 and the third terminal of the isolation power supply 121 converge at the second bus terminal and are connected to the first terminal of the third interface component 4.

[0056] In this embodiment, since the ground of the battery communication module 122 is floating, if the ground inside the battery pack is directly connected to the battery communication module 122, changes in the ground potential of the battery pack may affect the battery communication module 122, causing inconsistencies in ground potential. By setting an isolation power supply 121 between the battery communication module 122 and the first terminal of the cell unit 11, the ground inside the battery pack can be isolated from the battery communication module 122, ensuring stable operation even when the battery communication module 122 is floating, unaffected by external potential changes.

[0057] In one possible implementation, the second end of the second interface component 3 is a female connector, and the second end of the third interface component 4 is used to connect with the second pole of the vehicle load component 5 to form a male connector, which is then connected to the female connector. By pulling the second pole of the battery communication module 122 out of the battery pack body 1 through the third interface component 4 and connecting it with the second pole of the vehicle load component 5 to form a female connector, the formation and disconnection of the first and second connections can be synchronized. That is, the second pole of the battery communication module 122 and the second pole of the vehicle load component 5 can be synchronously connected or disconnected from the second pole of the cell unit 11. This avoids the situation where the second pole of the battery communication module 122 is connected to the second pole of the cell unit 11, while the second pole of the vehicle load component 5 is disconnected from the second pole of the cell unit 11, thus preventing the vehicle load component 5 from forming a power supply circuit with the vehicle battery pack and causing a malfunction in the vehicle load component 5.

[0058] In one possible implementation, the second end of the second interface component 3 and the second end of the third interface component 4 are also used for grounding, so that the second terminal of the cell unit 11 and the second terminal of the battery communication component 12 are both grounded.

[0059] Figure 2 This is a schematic diagram illustrating the structure of a vehicle load power supply system according to an exemplary embodiment, such as... Figure 2 As shown, a vehicle load power supply system is also provided, including a vehicle load component 5 and the vehicle battery pack in the above embodiments. The connection relationship between the vehicle battery pack and the vehicle load component 5 can be referred to in the above embodiments, and will not be repeated here.

[0060] The battery pack body 1 may also include a fourth interface component 6, with a first end connected to the communication end of the battery communication component 12 and a second end connected to the communication end of the vehicle load component 5. This enables communication between the battery communication component 12 and the vehicle load component 5 through the fourth interface component 6.

[0061] In one possible implementation, the third interface component 4 and the fourth interface component 6 are combined to reduce the number of openings on the battery pack body 1.

[0062] In one possible implementation, the vehicle load assembly 5 includes a power distributor 51. The first pole of the power distributor 51 is connected to the second end of the first interface assembly 2, and the second pole of the power distributor 51 forms a second connection with the second end of the second interface assembly 3, so that the two ends of the power distributor 51 can be connected to the first pole and the second pole of the battery cell unit 11, respectively, thereby enabling the battery cell unit 11 to supply power to the power distributor 51.

[0063] The communication terminal of the power distributor 51 is connected to the communication terminal of the battery communication component 12 to enable communication between the battery communication component 12 and the power distributor 51. Specifically, the power distributor 51 may include a power distribution communication module, which is connected to the first and second poles of the power distributor 51 respectively, and the communication terminal of the power distributor 51 may be the communication terminal of the power distribution communication module.

[0064] In one possible implementation, the vehicle load assembly 5 includes a controller 52. The first terminal of the controller 52 is connected to the second terminal of the first interface assembly 2, and the second terminal of the controller 52 forms a second connection with the second terminal of the second interface assembly 3, enabling the two ends of the controller 52 to be connected to the first and second terminals of the battery cell unit 11, respectively, thereby allowing the battery cell unit 11 to supply power to the controller 52. The communication terminal of the controller 52 is connected to the communication terminal of the battery communication assembly 12 to enable communication between the battery communication assembly 12 and the controller 52. Specifically, the controller 52 may include a control communication module, which is connected to both the first and second terminals of the controller 52, and the communication terminal of the controller 52 may be the communication terminal of the control communication module.

[0065] In one possible implementation, the vehicle load assembly 5 includes a power distributor 51 and a controller 52.

[0066] The first pole of the power distributor 51 is connected to the second end of the first interface component 2, and the output end of the power distributor 51 is connected to the first pole of the controller 52; the communication end of the power distributor 51 is connected to the communication end of the battery communication component 12 and the communication end of the controller 52 respectively; the second pole of the power distributor 51 and the second pole of the controller 52 form a second connection with the second end of the second interface component 3.

[0067] In this embodiment, the vehicle load assembly 5 includes a power distributor 51 and a controller 52. The vehicle battery pack is first connected to the power distributor 51, and then the power distributor 51 is connected to the controller 52. Furthermore, the battery communication component 12 in the vehicle battery pack is first connected to the communication terminal of the power distributor 51, and then the communication terminal of the power distributor 51 is connected to the communication terminal of the controller 52.

[0068] In one possible implementation, with the first electrode being positive and the second electrode being negative, the second terminals of the second interface component 3, the third interface component 4, and the vehicle load component 5 converge at the first bus terminal and are grounded. The battery communication component 12 includes an isolation power supply 121 and a battery communication module 122, and the vehicle load component 5 includes a distributor 51 and a controller 52. This method allows the negative terminals of the cell unit 11, the isolation power supply 121, the battery communication module 122, the distributor 51, and the controller 52 to be converged and grounded uniformly, eliminating the need for separate grounding wires and reducing wiring.

[0069] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0070] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A vehicle battery pack, characterized in that, include: The battery pack body (1), and a first interface component (2), a second interface component (3) and a third interface component (4) disposed on the battery pack body (1); The battery pack body (1) includes a cell unit (11) and a battery communication component (12), and the first pole of the cell unit (11) is connected to the first pole of the battery communication component (12). The first end of the first interface component (2) is connected to the first pole of the battery cell (11), and the second end of the first interface component (2) is used to connect to the first pole of the vehicle load component (5); The first end of the second interface component (3) is connected to the second pole of the battery cell (11), and the second end of the second interface component (3) is used to form a first connection with the second pole of the vehicle load component (5); The first end of the third interface component (4) is connected to the second pole of the battery communication component (12), and the second end of the third interface component (4) is used to form a second connection with the second end of the second interface component (3), and the formation and disconnection of the first connection and the second connection are synchronous.

2. The vehicle battery pack according to claim 1, characterized in that, The battery communication component (12) includes an isolated power supply (121) and a battery communication module (122); The first end of the isolation power supply (121) is connected to the first pole of the battery cell (11), and the second end of the isolation power supply (121) is connected to the first end of the battery communication module (122). The second end of the battery communication module (122) and the third end of the isolation power supply (121) are both connected to the first end of the third interface component (4).

3. The vehicle battery pack according to claim 1, characterized in that, The second end of the second interface component (3) is a female plug-in terminal, and the second end of the third interface component (4) is used to connect with the second pole of the vehicle load component (5) and together form a male plug-in terminal, which is used to connect with the female plug-in terminal.

4. The vehicle battery pack according to any one of claims 1 to 3, characterized in that, The first electrode is the positive electrode, and the second electrode is the negative electrode.

5. The vehicle battery pack according to claim 4, characterized in that, The second end of the second interface component (3) and the second end of the third interface component (4) are also used for grounding.

6. A vehicle load power supply system, characterized in that, Includes a vehicle load assembly (5) and a vehicle battery pack according to any one of claims 1 to 5; The battery pack body (1) also includes a fourth interface component (6), the first end of which is connected to the communication end of the battery communication component (12), and the second end of which is connected to the communication end of the vehicle load component (5).

7. The vehicle load power supply system according to claim 6, characterized in that, The vehicle load assembly (5) includes a power distribution unit (51); The first pole of the power distributor (51) is connected to the second end of the first interface component (2); The second pole of the power distributor (51) and the second end of the second interface component (3) form the second connection; The communication terminal of the power distributor (51) is connected to the communication terminal of the battery communication component (12).

8. The vehicle load power supply system according to claim 6, characterized in that, The vehicle load assembly (5) includes a controller (52); The first terminal of the controller (52) is connected to the second terminal of the first interface component (2); The second pole of the controller (52) forms the second connection with the second end of the second interface component (3); The communication terminal of the controller (52) is connected to the communication terminal of the battery communication component (12).

9. The vehicle load power supply system according to claim 6, characterized in that, The vehicle load assembly (5) includes a power distributor (51) and a controller (52); The first pole of the power distributor (51) is connected to the second end of the first interface component (2), and the output end of the power distributor (51) is connected to the first pole of the controller (52); The communication terminal of the power distributor (51) is connected to the communication terminal of the battery communication component (12) and the communication terminal of the controller (52), respectively. The second pole of the power distributor (51) and the second stage of the controller (52) form the second connection with the second end of the second interface component (3).

10. The vehicle load power supply system according to claim 6, characterized in that, The second end of the second interface component (3), the second end of the third interface component (4), and the second pole of the vehicle load component (5) converge at the first bus terminal and are grounded.

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