Modular battery for electric work vehicle
Through the modular battery system, a flexible power supply solution is provided, which solves the problems of auxiliary tools independence and scope of use under the limitations of existing hydraulic systems, and realizes efficient power supply to electric vehicles and auxiliary power tools.
Patent Information
- Application Number
- CN202380055819.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-08-05
- Filing Date
- 2023-07-25
- Publication Date
- 2025-03-14
AI Technical Summary
When existing working vehicles provide auxiliary hydraulic power tools, there are limitations on hydraulic systems, resulting in limited independence and use range of auxiliary tools, especially when electric drive technology gradually replaces hydraulic drive, there is a lack of flexible and efficient power supply solutions.
A modular battery system is designed, including a first battery pack and a second battery pack, which is used for power supply to the active vehicle, and the second battery pack can not only be powered but also connected to the auxiliary power tool through a power converter, and can be physically or electrically removed, providing greater flexibility.
It realizes flexible power supply for electric vehicles and auxiliary power tools, improves the independence and scope of auxiliary tools, and adapts to the development needs of electric drive technology.
Smart Images
Figure CN119630554A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of electric work vehicles. Background Art
[0002] Work vehicles typically include integrated hydraulic work tools and have an integrated hydraulic circuit configured to operate these tools. For example, if the work vehicle is an excavator, the integrated hydraulic circuit can be used to operate the excavator's arm and any tools attached to the excavator's arm.
[0003] It is known to provide an auxiliary hydraulic circuit on a work machine, which is attached to the integral hydraulic circuit. The auxiliary hydraulic circuit is configured to operate auxiliary hydraulic power tools, which are typically more independent of the work vehicle, such as hydraulic breakers or concrete saws. These auxiliary hydraulic power tools may be driven by the auxiliary hydraulic circuit and are therefore tethered to the work vehicle by the auxiliary hydraulic circuit, but can otherwise be used within a radius of the work vehicle determined by the length of the auxiliary hydraulic circuit.
[0004] Auxiliary power tools may increasingly be powered electrically rather than hydraulically. Summary of the invention
[0005] In this context, a modular battery for an electric working vehicle is provided, the modular battery comprising: a first battery pack configured to power the electric working vehicle; and a second battery pack configured to power the electric working vehicle and power an auxiliary power tool. The second battery pack is configured to be removable from the modular battery, and the second battery pack includes a power converter.
[0006] In this way, a modular battery can be used to power an electric work vehicle in one configuration and to power an auxiliary power tool in another configuration. The first battery pack and the second battery pack can be used to power the electric work vehicle together or individually. The second battery pack can be physically or electrically removed from the modular battery and can be used to power an auxiliary power tool. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Specific embodiments of the present disclosure will now be described, by way of example only, with reference to the accompanying drawings, in which:
[0008] Figure 1 A schematic diagram of an example of a modular battery according to an embodiment of the present disclosure is shown. The example of the modular battery includes eight battery packs.
[0009] Figure 2 The embodiment according to the present disclosure is shown Figure 1Schematic diagram of a modular battery pack with one battery pack removed and connected to an auxiliary power tool.
[0010] Figure 3 A schematic diagram of a modular battery including two battery packs and an electric working vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION
[0011] refer to Figure 1 The modular battery 100 is configured to supply power to an electric working vehicle. The modular battery 100 includes two or more battery packs. Figure 1 The modular battery 100 shown in FIG. 1 includes eight battery packs (seven of which are visible: 110 , 120 , 130 , 140 , 150 , 160 , and 170 ), however this is an example and the modular battery 100 may include any number of battery packs in excess of one.
[0012] The modular battery pack 100 includes a first battery pack 110 configured to supply power to an electric working vehicle and a second battery pack 120 configured to be removable from the modular battery pack 100 . Figure 1 The second battery pack 120 is shown installed in the modular battery 100, and Figure 2 The second battery pack 120 is shown removed from the modular battery 100. The second battery pack 120 is configured to power the electric work vehicle and to power the auxiliary power tool 200. The second battery pack 120 includes a power converter.
[0013] Figure 3 A schematic diagram illustrating how a modular battery may be mounted on an electric work vehicle 300 is shown. Figure 3 The modular battery shown includes a first battery pack 110 and a second battery pack 120. As an example, Figure 3 The specific electric working vehicle 300 in FIG. The electric working vehicle 300 may include any other type of electric working vehicle.
[0014] In an embodiment, the power converter comprises a DC to AC inverter.
[0015] The second battery pack 120 can be configured to be in a first state and a second state. In the first state, the second battery pack 120 can be mounted on the electric working vehicle. In the first state, the second battery pack 120 can be configured to supply power to the electric working vehicle. In the second state, the second battery pack 120 can be removed from the electric working vehicle (or removed from the modular battery) and can be configured to supply power to the auxiliary power tool 200.
[0016] In another embodiment, the second battery pack 120 may be configured to be in a first state and a third state. In the first state, the second battery pack 120 may be mounted to the electric working vehicle (or mounted to the modular battery) and may be configured to power the electric working vehicle. In the third state, the second battery pack 120 may be physically mounted to the electric working vehicle (or mounted to the modular battery), but may be electrically removed or electrically disconnected, so that the second battery 120 is configured to power the auxiliary power tool. In other words, the second battery pack 120 may remain physically mounted to the modular battery 100, but may be electrically removable.
[0017] In one embodiment, the auxiliary power tool 200 can be separated from the electric working vehicle. The second battery pack 120 can be configured to be connected to the auxiliary power tool 200 by a cable (such as Figure 2 The second battery pack 120 may be configured to be connected to the auxiliary power tool 200 by a cable in the second state (wherein the second battery pack 120 is removed from the electric working vehicle), or the second battery pack 120 may be configured to be connected to the auxiliary power tool 200 by a cable in the third state (wherein the second battery pack 120 is mounted to the modular battery but electrically removed from the modular battery). The second battery pack 120 may be configured to be directly mounted to the auxiliary power tool 200 in the second state. The length of the auxiliary hydraulic fluid circuit is necessarily limited by the hydraulic system, and a power cable having a significantly greater length may be provided compared to the auxiliary hydraulic fluid circuit.
[0018] In an embodiment, the electric working vehicle may include the auxiliary power tool. As described above, the second battery pack 120 may be configured to be electrically removable, wherein in a first state the second battery pack 120 is configured to power the electric working vehicle, and in a third state the second battery pack 120 is configured to power the auxiliary power tool.
[0019] In an embodiment, the first battery pack 110 may be configured to be connected to the second battery pack 120 so that charges may be exchanged between the first battery pack 110 and the second battery pack 120 .
[0020] In an embodiment, at least one of the first battery pack 110 and the second battery pack 120 is further configured to be connected to a battery of a second electric working vehicle and to exchange charge with the battery of the second electric working vehicle when the first electric working vehicle and the second electric working vehicle are stationary. While the charge is exchanged between the first electric working vehicle and the second electric working vehicle, the first electric working vehicle and the second electric working vehicle may be prevented from moving or operating a working tool. Thus, the battery of the first electric working vehicle can charge the battery of the second electric working vehicle, and vice versa. Charging may be DC or AC.
[0021] In an embodiment, at least one of first battery pack 110 and second battery pack 120 may be configured to be physically removed from modular battery 100 and mounted on a modular battery of a second electric working vehicle.
[0022] The first battery pack 110 or the second battery pack 120 may be configured to be connected to the battery of the second electric working vehicle via a DC port.
[0023] The first battery pack may be further configured to power the auxiliary power tool and may be removable from the modular battery. The first battery pack may include a power converter.
[0024] The modular battery may also include one or more additional battery packs, such that the modular battery includes more than two battery packs (see, for example, Figure 1 ). Any of the additional battery packs may be similar to the first battery pack or the second battery pack. The one or more additional battery packs may be configured to power the electric working vehicle. One or more of the additional battery packs may be configured to be removable from the electric working vehicle. One or more of the additional battery packs may be further configured to power an auxiliary power tool and may include a power converter.
[0025] The first battery pack may be configured to power the electric working vehicle alone or in combination with the second battery pack. The second battery pack may be configured to power the electric working vehicle alone or in combination with the first battery pack. For example, when the second battery pack is being used to power the auxiliary power tool, the first battery pack may be used to power the electric working vehicle at the same time.
Claims
1. A modular battery (100) for an electric working vehicle (300), the modular battery (100) comprising: a first battery pack (110) configured to supply power to the electric working vehicle (300); and a second battery pack (120) configured to supply power to the electric working vehicle (300) and to supply power to an auxiliary electric tool (200); The second battery pack (120) is configured to be removable from the modular battery (100), and the second battery pack (120) includes a power converter.
2. The modular battery (100) of claim 1, wherein the power converter comprises a DC to AC inverter.
3. The modular battery (100) according to claim 1 or 2, wherein the second battery pack (120) comprises a first state and a second state, wherein: In the first state, the second battery pack (120) is mounted on the electric working vehicle (300); and In the second state, the second battery pack (120) is removed from the electric working vehicle (300) and is configured to supply power to the auxiliary electric tool (200).
4. The modular battery (100) of any preceding claim, wherein the auxiliary power tool (200) is separate from the electric working vehicle (300).
5. The modular battery (100) according to claim 1 or 2, wherein the second battery pack (120) comprises a first state and a third state, wherein: In the first state, the second battery pack (120) is mounted on the electric working vehicle (300); and In the third state, the second battery pack is mounted on the electric working vehicle (300) and is electrically removed from the modular battery (100), so that the second battery pack (120) is configured to power the auxiliary power tool (200) and is configured not to power the electric working vehicle (300).
6. The modular battery (100) according to claim 5, wherein the electric working vehicle (300) includes the auxiliary electric tool (200).
7. The modular battery (100) according to claim 5, wherein the auxiliary power tool (200) is not mounted on the electric working vehicle (300), and wherein the auxiliary power tool (200) is any of the following: Not connected to the electric working vehicle (300); or The second battery pack 120 is connected to the electric working vehicle (300).
8. A modular battery (100) according to any preceding claim, wherein the first battery pack (110) is configured to be connected to the second battery pack (120) so that charge can be exchanged between the first battery pack (110) and the second battery pack (120).
9. The modular battery (100) of any preceding claim, wherein at least one of the first battery pack (110) and the second battery pack (120) is further configured to connect to and exchange charge with a battery of a second electric working vehicle.
10. The modular battery (100) of any preceding claim, wherein at least one of the first battery pack (110) and the second battery pack (120) is further configured to be removable from the electric work vehicle (300).
11. The modular battery (100) according to claim 9 or 10, wherein the first battery pack (110) or the second battery pack (120) is configured to be connected to the battery of the second electric working vehicle via a DC port.
12. A modular battery (100) according to any preceding claim, wherein the first battery pack (110) is further configured to power the auxiliary power tool (200) and is removable from the modular battery (100), and wherein the first battery pack (110) includes a power converter.
13. The modular battery (100) of any preceding claim, further comprising one or more additional battery packs configured to power the electric work vehicle (300) and configured to be removable from the electric work vehicle (300).
14. The modular battery (100) of claim 13, wherein at least one of the one or more additional battery packs is further configured to power an auxiliary power tool (200) and includes a power converter.
15. A modular battery (100) according to any preceding claim, wherein the first battery pack (110) is configured to power the electric working vehicle (300) alone or in combination with the second battery pack (120), and wherein the second battery pack (120) is configured to power the electric working vehicle (300) alone or in combination with the first battery pack (110).
16. A method for using a modular battery pack (100) to power an electric working vehicle (300) and an electric tool (200), the method comprising: Using the first battery pack (110) of the modular battery (100) to power the electric working vehicle (300); as well as The second battery pack (120) of the modular battery (100) is used to power the electric tool (200), wherein: The second battery pack (120) is removable from the modular battery (100); and The DC output of the second battery pack (120) is converted into AC power for powering the electric tool (200).
17. The method for using the modular battery pack (100) to power the electric working vehicle (300) and the electric tool (200) according to claim 16, the method further comprising: The second battery pack (120) is removed from the electric working vehicle (300), and the second battery pack (120) is used to power the electric tool (200).
18. The method for using the modular battery pack (100) to power the electric working vehicle (300) and the electric tool (200) according to claim 16, wherein the second battery pack (120) is used to power the electric working vehicle (300).