Battery management system, replacement system, and battery replacement judgment system for vehicle batteries

Abstract

The present invention provides a battery management system, replacement system, and battery replacement determination system for vehicle-mounted batteries. The battery management system includes a battery information acquisition module for acquiring battery management information of the vehicle-mounted battery, which is used to determine whether the vehicle-mounted battery needs replacement; and an on-board communication module for transmitting the battery management information to the vehicle-mounted battery replacement system. The battery management system, replacement system, and battery replacement determination system provided by the present invention can more accurately determine whether a vehicle-mounted battery needs replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of battery management, and in particular to a battery management system, a replacement system, and a battery replacement determination system for a vehicle-mounted battery. Background Art

[0002] With the increasing popularity of electric vehicles, the use of onboard batteries is becoming increasingly common. As batteries age, they are more likely to experience malfunctions, necessitating replacement. However, current technologies cannot accurately determine whether a battery needs replacement.

[0003] Therefore, how to more accurately determine whether the vehicle battery needs to be replaced is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0004] The present invention provides a battery management system, a replacement system and a battery replacement determination system for a vehicle-mounted battery, which can more accurately determine whether the vehicle-mounted battery needs to be replaced.

[0005] In a first aspect, the present invention provides a battery management system for a vehicle-mounted battery, comprising:

[0006] A battery information acquisition module is used to obtain battery management information of the vehicle battery. The battery management information is used to determine whether the vehicle battery needs to be replaced;

[0007] The vehicle communication module is used to send battery management information to the vehicle battery replacement system.

[0008] Optionally, the battery management information includes a battery service life parameter and a battery usage history parameter of the vehicle battery; wherein the battery service life parameter represents the remaining life of the vehicle battery.

[0009] Optionally, the battery management information is the product of a battery service life parameter and a battery usage history parameter.

[0010] Optionally, based on the parameter size of the battery service life parameter, the battery replacement status type corresponding to the battery service life parameter is determined.

[0011] Optionally, the battery replacement status type includes a first battery replacement status type, a second battery replacement status type, and a third battery replacement status type;

[0012] The first battery replacement status type is used to indicate that the vehicle battery has been replaced; wherein, the vehicle battery has no abnormality;

[0013] The second battery replacement status type is used to indicate that the vehicle battery needs regular maintenance and replacement;

[0014] The third battery replacement status type is used to indicate that the vehicle battery needs to be reused as a stationary battery under light load conditions of constant current and constant voltage.

[0015] Optionally, the battery usage history parameter is the product of a battery charge and discharge capacity parameter, a battery health status parameter, a battery power consumption parameter, and an overcharge and discharge parameter.

[0016] Optionally, the vehicle-mounted communication module is used to send battery management information to the vehicle-mounted battery replacement system in a wired and / or wireless manner.

[0017] In a second aspect, the present invention provides a vehicle battery replacement system, comprising:

[0018] Replace the system-side communication module to receive the battery management information of the vehicle battery sent by the battery management system of the vehicle battery shown in the first aspect;

[0019] The battery replacement determination module is used to determine whether the vehicle battery needs to be replaced based on the battery management information.

[0020] Optionally, the system-side communication module is replaced to receive battery management information in a wired and / or wireless manner.

[0021] In a third aspect, the present invention provides a battery replacement determination system, comprising:

[0022] The battery management system for the vehicle battery as shown in the first aspect;

[0023] A vehicle battery replacement system as shown in the second aspect.

[0024] The battery management system for a vehicle battery provided by the present invention first uses a battery information acquisition module to obtain battery management information of the vehicle battery, and then uses an on-board communication module to transmit the battery management information to a vehicle battery replacement system. Because this battery management information can represent the battery status of the vehicle battery, it can more accurately determine whether the vehicle battery needs to be replaced based on this battery management information. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 1 is a schematic structural diagram of a battery management system for an on-board battery provided by an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of sending battery management information provided by an embodiment of the present invention;

[0028] Figure 3 1 is a schematic structural diagram of a vehicle battery replacement system provided by an embodiment of the present invention;

[0029] Figure 4 It is a structural diagram of a battery replacement determination system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the above and other features and advantages of the present invention clearer, the present invention is further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are merely exemplary and non-restrictive. For those of ordinary skill in the art, the specific meanings of terms in the present invention can be understood according to specific circumstances, unless otherwise clearly defined. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless otherwise contradictory.

[0031] With the increasing popularity of electric vehicles, the use of onboard batteries is becoming increasingly common. As batteries age, they are more likely to experience malfunctions, necessitating replacement. However, current technologies cannot accurately determine whether a battery needs replacement.

[0032] To address the technical problems in the related art, the present invention provides a battery management system, a replacement system, and a battery replacement determination system for an on-board battery, which can more accurately determine whether an on-board battery needs to be replaced. The battery management system for an on-board battery is first described below.

[0033] Figure 1 FIG. 1 is a schematic diagram of the structure of a battery management system for a vehicle-mounted battery provided by an embodiment of the present invention. Figure 1 As shown, the battery management system of the vehicle battery includes:

[0034] A battery information acquisition module is used to obtain battery management information of the vehicle battery. The battery management information is used to determine whether the vehicle battery needs to be replaced;

[0035] The vehicle communication module is used to send battery management information to the vehicle battery replacement system.

[0036] The battery management information of the vehicle battery can represent the battery status of the vehicle battery.

[0037] The vehicle battery management system first uses a battery information acquisition module to obtain the vehicle battery's battery management information, and then uses the vehicle communication module to send the battery management information to the vehicle battery replacement system. Because the battery management information can represent the battery status of the vehicle battery, it can more accurately determine whether the vehicle battery needs to be replaced based on this battery management information.

[0038] In order to more accurately characterize the battery status of the vehicle battery, in one embodiment, the battery management information includes a battery service life parameter and a battery usage history parameter of the vehicle battery; wherein the battery service life parameter characterizes the remaining life of the vehicle battery.

[0039] In this embodiment, since the battery service life parameter represents the remaining life of the vehicle battery, and the battery usage history parameter represents the historical usage of the vehicle battery, the battery management information in this embodiment can more accurately represent the battery status of the vehicle battery, and thus can more accurately determine whether the vehicle battery needs to be replaced.

[0040] Furthermore, in one embodiment, the battery management information is the product of a battery service life parameter and a battery usage history parameter.

[0041] In order to more accurately determine the battery replacement status type, in one embodiment, the battery replacement status type corresponding to the battery service life parameter is determined based on the parameter size of the battery service life parameter.

[0042] The value of the battery life parameter corresponds to the remaining life of the vehicle battery. Specifically, when the value of the battery life parameter is 100%, the remaining life of the vehicle battery is 10 years; when the value of the battery life parameter is 90%, the remaining life of the vehicle battery is 7 years; when the value of the battery life parameter is 80%, the remaining life of the vehicle battery is 5 years; and when the value of the battery life parameter is 70% or less, the remaining life of the vehicle battery is 0 years.

[0043] According to the mapping relationship between the parameter size of the battery service life parameter and the remaining life of the vehicle battery, the corresponding battery replacement status type can be determined.

[0044] In one embodiment, the battery replacement status type includes a first battery replacement status type, a second battery replacement status type, and a third battery replacement status type;

[0045] The first battery replacement status type is used to indicate that the vehicle battery has been replaced; wherein, the vehicle battery has no abnormality;

[0046] The second battery replacement status type is used to indicate that the vehicle battery needs regular maintenance and replacement;

[0047] The third battery replacement status type is used to indicate that the vehicle battery needs to be reused as a stationary battery under light load conditions of constant current and constant voltage.

[0048] Specifically, see Table 1 below:

[0049] Table 1

[0050]

[0051] Since the battery usage history parameter represents the historical usage of the vehicle battery, in order to more accurately represent the historical usage of the vehicle battery, in one embodiment, the battery usage history parameter is the product of the battery charge and discharge capacity (Through-put (Ah)) parameter, the battery health state (SOH) parameter, the battery power limit (P / L) parameter, and the overcharge and discharge parameter. The parameter value range of the battery usage history parameter is 100% to 8.75%.

[0052] Specifically, combined with the above battery life parameters, we can get the following Table 2:

[0053] Table 2

[0054]

[0055] In order to improve the stability of information transmission in different scenarios, such as Figure 2 As shown, in one embodiment, the vehicle-mounted communication module is used to send battery management information to the vehicle-mounted battery replacement system in a wired and / or wireless manner.

[0056] The wireless method may be an Over-the-Air (OTA) method, a Bluetooth transmission method, a WiFi transmission method or a Zigbee transmission method.

[0057] In this embodiment, the vehicle-mounted communication module transmits battery management information in a wired manner and / or a wireless manner, which can cope with different scenarios and thus improve the stability of information transmission in different scenarios.

[0058] Figure 3 FIG. 1 is a structural diagram of a vehicle battery replacement system provided by an embodiment of the present invention. Figure 3 As shown, the vehicle battery replacement system includes:

[0059] Replace the system-side communication module to receive the battery management information of the vehicle battery sent by the battery management system of the vehicle battery;

[0060] The battery replacement determination module is used to determine whether the vehicle battery needs to be replaced based on the battery management information.

[0061] The vehicle battery replacement system first uses a replacement system-side communication module to receive battery management information from the vehicle battery's battery management system. The battery replacement determination module then uses the battery management information to determine whether the vehicle battery needs to be replaced. Because the battery management information represents the battery status of the vehicle battery, it can more accurately determine whether the vehicle battery needs to be replaced.

[0062] In order to improve the stability of information transmission in different scenarios, in one embodiment, the system-side communication module is replaced to receive battery management information in a wired manner and / or wireless manner.

[0063] The wireless method may be an Over-the-Air (OTA) method, a Bluetooth transmission method, a WiFi transmission method or a Zigbee transmission method.

[0064] Figure 4 FIG. 1 is a structural diagram of a battery replacement determination system provided by an embodiment of the present invention. Figure 4 As shown, the present invention also provides a battery replacement determination system, comprising:

[0065] A battery management system for a vehicle battery as shown in any of the above embodiments;

[0066] A vehicle battery replacement system as shown in any of the above embodiments.

[0067] In this battery replacement determination system, the battery management system sends the vehicle battery's battery management information to the replacement system, which then determines whether the vehicle battery needs to be replaced based on this battery management information. Because this battery management information can represent the battery status of the vehicle battery, it can more accurately determine whether the vehicle battery needs to be replaced based on this battery management information.

[0068] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A battery management system for a vehicle battery, characterized in that: include: A battery information acquisition module is used to obtain battery management information of the vehicle battery, and the battery management information is used to determine whether the vehicle battery needs to be replaced; The vehicle-mounted communication module is used to send the battery management information to the vehicle-mounted battery replacement system. The battery management information includes the battery service life parameter and the battery usage history parameter of the vehicle-mounted battery. The battery management information is the product of the battery service life parameter and the battery usage history parameter. The battery usage history parameter is the product of the battery charging and discharging capacity parameter, battery health status parameter, battery power consumption parameter, and overcharge and discharge parameter.

2. The battery management system for a vehicle battery according to claim 1, characterized in that: The battery service life parameter represents the remaining service life of the vehicle battery.

3. The battery management system for a vehicle battery according to claim 2, characterized in that: According to the parameter size of the battery service life parameter, the battery replacement status type corresponding to the battery service life parameter is determined.

4. The battery management system for a vehicle battery according to claim 3, characterized in that: The battery replacement status type includes a first battery replacement status type, a second battery replacement status type and a third battery replacement status type; The first battery replacement status type is used to indicate that the vehicle battery has been replaced; and there is no abnormality in the vehicle battery. The second battery replacement status type is used to indicate that the vehicle battery needs regular maintenance and replacement; The third battery replacement status type is used to indicate that the vehicle-mounted battery needs to be reused as a fixed battery under light load conditions of constant current and constant voltage.

5. The battery management system for a vehicle-mounted battery according to claim 1, characterized in that: The vehicle-mounted communication module is used to send the battery management information to the vehicle-mounted battery replacement system in a wired manner and / or wireless manner.

6. A vehicle battery replacement system, characterized in that: include: Replace the system-side communication module to receive battery management information of the vehicle battery sent by the battery management system of the vehicle battery according to any one of claims 1 to 5, wherein the battery management information includes a battery service life parameter and a battery usage history parameter of the vehicle battery, wherein the battery management information is the product of the battery service life parameter and the battery usage history parameter, and the battery usage history parameter is the product of the battery charge and discharge capacity parameter, the battery health status parameter, the battery power consumption parameter, and the overcharge and discharge parameter; A battery replacement determination module is used to determine whether the vehicle-mounted battery needs to be replaced based on the battery management information.

7. The vehicle battery replacement system according to claim 6, characterized in that: The replacement system-side communication module is used to receive the battery management information in a wired manner and / or wireless manner.

8. A battery replacement determination system, characterized in that: include: The battery management system for an on-vehicle battery according to any one of claims 1 to 5; A vehicle battery replacement system as claimed in any one of claims 6 to 7.

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