Battery module and device based on echelon utilization

Abstract

The invention discloses a battery module based on echelon utilization, the battery module comprises a box-shaped frame, batteries, a connecting line assembly and a battery management system, the interior of the box-shaped frame is divided into a plurality of battery mounting spaces by partition plates, and the batteries are respectively mounted in the plurality of battery mounting spaces; the connecting line assembly comprises an external connector and a connecting line; the connecting line connects a plurality of batteries in series and then is connected with an external electronic load through the external connector to form a circulation loop and charge and discharge echelon utilization is carried out on the batteries; the battery management system is installed on the box-shaped frame, sensors are arranged in the circulation loop and the box-shaped frame, and the circulation loop and the box-shaped frame are connected to the battery management system through signal transmission lines. The invention also discloses a device of the battery module based on echelon utilization. According to the invention, the charging and discharging independent control of the batteries with different performance differences can be realized, the conditions of supersaturated charging and excessive discharging are avoided, the echelon utilization efficiency of different batteries is improved, the stability is good, and the safety is high.

Description

Technical Field

[0001] The present invention relates to the technical field of battery recycling, and in particular to a battery module and device based on recycling. Background Art

[0002] Current electric vehicles primarily rely on lithium-ion batteries as their power source. During use, the performance of these batteries degrades, and when they no longer meet the requirements of new energy vehicles, they are retired. A significant portion of these retired batteries still have a high level of residual energy. After re-evaluation and sorting, these batteries may be repurposed for use in applications with lower performance requirements and milder operating conditions, thereby achieving a second-life utilization strategy for these batteries.

[0003] Compared to new batteries, retired power batteries experience significant performance differences and poorer consistency after long-term use. Currently, due to the significant performance differences between retired power batteries, some cells in the battery pack are prone to oversaturation and overdischarge during the battery pack's charge and discharge process, affecting the entire battery pack's reuse, resulting in poor stability, low utilization, and potential safety risks. Summary of the Invention

[0004] The purpose of the present invention is to provide a battery module and device based on cascade utilization to solve the above defects.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses a battery module based on cascade utilization, comprising: a box-shaped frame, batteries, a connecting wire assembly and a battery management system, wherein a plurality of mutually parallel partitions are provided inside the box-shaped frame and divide the interior of the box-shaped frame into a plurality of battery installation spaces, and a plurality of batteries are provided and respectively installed in the plurality of battery installation spaces; the connecting wire assembly comprises an external connector and a connecting wire, and the connecting wire connects a plurality of batteries in series and then connects to an external electronic load through an external connector to form a circulation loop and charge and discharge the batteries for cascade utilization; the battery management system is installed on the box-shaped frame, and sensors are provided in the circulation loop and the box-shaped frame and are connected to the battery management system through a signal transmission line.

[0007] Preferably, a circuit control component is provided in each battery installation space above the battery, and the circuit control component can control whether the batteries in the battery installation space are connected in series in a circulation loop.

[0008] Preferably, the circuit control assembly includes a control substrate and a telescopic rod, the two ends of the control substrate are respectively engaged in the box-shaped frames or partitions on both sides of the battery installation space, and are controlled to slide up and down in the battery installation space by the telescopic rod; the lower end surface of the control substrate is fixedly mounted with a battery positive contact and a battery negative contact, which correspond to the positions of the positive and negative heads of the battery respectively; the upper end surface of the control substrate is fixedly mounted with a circuit contact A, which corresponds to the position of the circuit contact B provided on the inner wall of the box-shaped frame in the battery installation space; the battery positive contact, battery negative contact, circuit contact A, and circuit contact B are connected to a circulation loop through circuits.

[0009] Preferably, longitudinal slides are provided at both ends of the control substrate, and the slides are engaged in slide grooves provided on the inner wall of the box-shaped frame or the partition on one side of the battery installation space.

[0010] Preferably, the control substrate is fixed with contact mounting plate 1 and contact mounting plate 2 on the upper and lower sides by a number of springs respectively, the battery positive contact and battery negative contact are both installed on the lower end surface of contact mounting plate 1, and the circuit contact A is installed on the upper end surface of contact mounting plate 2.

[0011] Preferably, L-shaped limit plates are provided on both sides of the contact installation plate, and two symmetrical telescopic rods are provided, one end of which is installed on the inner wall of the box-shaped frame in the battery installation space, and the other end is fixedly installed on the two L-shaped limit plates.

[0012] Preferably, a plurality of universal ball bearings are fixedly mounted on both end surfaces of the contact piece mounting plate 1 and the contact piece mounting plate 2, respectively. The universal ball bearings mounted on both ends of the contact piece mounting plate 1 are in contact with the inner walls of the two slides respectively, and the universal ball bearings mounted on both ends of the contact piece mounting plate 2 are in contact with the two L-shaped limit plates respectively.

[0013] Preferably, in the battery installation space, the telescopic rod of the circuit control assembly is extended under the control of a motor, and the battery positive contact and the battery negative contact installed in the circuit control assembly can respectively contact and connect with the positive head and the negative head of the battery, so that the batteries in the battery installation space are connected in series in the circulation loop; the telescopic rod of the circuit control assembly is retracted under the control of the motor, and the circuit contact A installed in the circuit control assembly can contact and connect with the circuit contact B, so that the circulation loop can remain unobstructed and the circulation loop can be kept away from the batteries in the battery installation space.

[0014] Preferably, the sensors include a current sensor, a voltage sensor, a temperature sensor and a main circuit control switch. The current sensor is arranged on the main line of the circulation loop, and is used to detect the charging and discharging current passing through the circulation loop; the main circuit control switches are all arranged on the main line of the circulation loop, and are used to control the connection and disconnection of the circulation loop; the voltage sensors are provided in number and connected to the main line of the circulation loop and the two ends of several batteries, and are used to detect the charging and discharging voltages passing through the main line of the circulation loop and all the batteries; the temperature sensors are provided in number and are respectively installed in several battery installation spaces, and are used to monitor the temperature of the batteries in the battery installation space during the charging and discharging process.

[0015] Preferably, a device for a battery module based on cascade utilization comprises: a battery detection and sorting device, a battery cascade utilization device and a cascade utilization system; the battery detection and sorting device is used to detect the capacity, internal resistance, open circuit voltage and self-discharge parameters of the raw material battery, and then sort it according to the intervals of the detection results of different parameters to facilitate subsequent cascade utilization; the battery cascade utilization device comprises several of the battery modules based on cascade utilization, and the several battery modules based on cascade utilization are combined in series and parallel to form an entire battery system, and then charge and discharge to realize energy storage utilization; the cascade utilization system is connected to the battery management system in the battery module based on cascade utilization through lines and connectors, and monitors and controls the cascade utilization status of the entire battery system.

[0016] The beneficial effects of the present invention are:

[0017] (1) The battery module based on cascade utilization of the present invention monitors the charge and discharge conditions of all batteries through various sensors, and then controls whether the batteries are connected in series in the circulation loop through the circuit control components arranged in the battery installation space above the batteries, thereby realizing independent control of the charge and discharge of batteries with different performance differences, avoiding oversaturated charging and excessive discharge, improving the cascade utilization efficiency of different batteries, and having good stability and high safety.

[0018] (2) The device of the present invention based on the battery module of cascade utilization detects and sorts different parameters of the raw battery through the battery detection and sorting device, thereby improving the subsequent cascade utilization efficiency of batteries with different performances; by combining a number of battery modules based on cascade utilization in series and parallel, the entire battery system is constructed to improve the large-scale and large-scale utilization of battery modules; through the cascade utilization system, the cascade utilization status of the entire battery system is monitored and controlled to improve utilization efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1: A schematic structural diagram of a battery module based on cascade utilization according to the present invention;

[0020] Figure 2 : A schematic structural diagram of the circuit control assembly of the present invention;

[0021] Figure 3 : Figure 1 A magnified view of the structure at center A. DETAILED DESCRIPTION

[0022] The present invention is further described below with reference to the embodiments. It should be noted that these are merely examples and illustrations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should be deemed to fall within the scope of protection of the present invention.

[0023] Example 1:

[0024] like Figure 1-3 As shown, the present invention discloses a battery module based on cascade utilization, including: a box-shaped frame 1, a battery 2, a connecting wire assembly 5 and a battery management system.

[0025] A plurality of mutually parallel partitions 12 are provided inside the box-shaped frame 1 to divide the interior of the box-shaped frame 1 into a plurality of battery installation spaces 3 . A plurality of batteries 2 are provided and are installed one by one in the plurality of battery installation spaces 3 .

[0026] The connecting wire assembly 5 includes an external connector 51 and a connecting wire 52 . The connecting wire 52 connects all the batteries 2 in series and then connects to an external electronic load through the external connector 51 to form a circulation loop and charge and discharge the batteries 2 for multiple utilization.

[0027] The battery management system is mounted on a box-shaped frame 1. Sensors are installed in the circulation loop and within the box-shaped frame 1 and are connected to the battery management system via signal transmission lines. These sensors can monitor the charge and discharge status of all batteries 2 installed in the multiple battery installation spaces 3, facilitating control.

[0028] Each battery installation space 3 above each battery 2 is equipped with a circuit control assembly 4. This assembly controls whether a connecting wire 52 is connected to the battery 2 within that space, effectively controlling whether the battery 2 within that space is connected in series within the circuit. Furthermore, it controls the connection and disconnection of the entire circuit. Controlled by this assembly, the charging and discharging of batteries 2 with varying performance characteristics can be independently controlled, preventing oversaturation and overdischarge, improving the reuse efficiency of different batteries, and enhancing stability and safety.

[0029] Example 2:

[0030] like Figure 1-3 As shown, the present invention discloses a battery module based on cascade utilization, including: a box-shaped frame 1, a battery 2, a connecting wire assembly 5 and a battery management system.

[0031] A plurality of mutually parallel partitions 12 are provided inside the box-shaped frame 1 to divide the interior of the box-shaped frame 1 into a plurality of battery installation spaces 3 . A plurality of batteries 2 are provided and are installed one by one in the plurality of battery installation spaces 3 .

[0032] The connecting wire assembly 5 includes an external connector 51 and a connecting wire 52 . The connecting wire 52 connects all the batteries 2 in series and then connects to an external electronic load through the external connector 51 to form a circulation loop and charge and discharge the batteries 2 for multiple utilization.

[0033] The battery management system is mounted on a box-shaped frame 1. Sensors are installed within the circulation loop and the box-shaped frame 1 and are connected to the battery management system via signal transmission lines. These sensors include a current sensor, a voltage sensor, a temperature sensor, and a main circuit control switch. The current sensor is installed on the main line of the circulation loop to detect the charge and discharge currents flowing through the circulation loop. The main circuit control switches are all installed on the main line of the circulation loop to control the connection and disconnection of the circulation loop. Several voltage sensors are installed and connected to the main line of the circulation loop and to the terminals of several batteries 2. They detect the charge and discharge voltages flowing through the main line of the circulation loop and across all batteries 2. Several temperature sensors are installed in several battery mounting spaces 3 to monitor the temperature of the batteries 2 in these spaces during the charge and discharge process. These various sensors can monitor the charge and discharge status of all batteries 2 installed in the several battery mounting spaces 3, facilitating control.

[0034] A circuit control assembly 4 is installed in the battery installation space 3 above the battery 2. This assembly includes a control substrate 41 and a telescopic rod 47. A longitudinal slide 45 is installed at each end of the control substrate 41. The slide 45 engages with a slide groove provided on the inner wall of the box-shaped frame 1 or the partition 12 on one side of the battery installation space 3 and is controlled by the telescopic rod 47 to slide up and down within the battery installation space 3.

[0035] Contact mounting plate 1 42 and contact mounting plate 2 43 are fixedly mounted on both sides of the control substrate 41 via a plurality of springs 44. L-shaped limit plates 46 are provided on both sides of contact mounting plate 2 43. Two symmetrical telescopic rods 47 are provided, one end of each being mounted on the inner wall of the box-shaped frame 1 within the battery installation space 3, and the other end being fixedly mounted on the two L-shaped limit plates 46. A plurality of universal ball transfers 48 are fixedly mounted on both ends of contact mounting plate 1 42 and contact mounting plate 2 43. The universal ball transfers 48 mounted on both ends of contact mounting plate 1 42 contact the inner walls of the two slides 45, while the universal ball transfers 48 mounted on both ends of contact mounting plate 2 43 contact the two L-shaped limit plates 46. Contact mounting plate 1 42 and contact mounting plate 2 43 can move within a certain range under the action of the springs 44. The universal ball transfers 48 improve the stability and smoothness of their movement, reducing resistance.

[0036] The positive and negative battery contacts 53 and 54 are mounted on the lower surface of contact mounting plate 1 42 below the control substrate 41, corresponding to the positive and negative terminals 21 and 22 of the battery 2, respectively. A circuit contact A 55 is mounted on the upper surface of contact mounting plate 2 43 above the control substrate 41, corresponding to a circuit contact B 57 provided on the inner wall of the box-shaped frame 1 within the battery installation space 3. The positive and negative battery contacts 53, 54, circuit contacts A 55, and circuit contacts B 57 are connected to a circuit via wiring.

[0037] The battery module based on cascade utilization of the present invention has the following specific steps during use:

[0038] (1) Install several batteries 2 one by one into several battery installation spaces 3 inside the box-shaped frame 1, and then connect the external connector 51 of the connecting wire assembly 5 to the external electronic load to build a circulation loop and prepare the batteries 2 for repeated use by charging and discharging;

[0039] (2) In the plurality of battery installation spaces 3 inside the box-shaped frame 1, the battery management system controls the extension of the telescopic rods 47 of the plurality of circuit control components 4 under the control of the motor, and the battery positive contact pieces 53 and the battery negative contact pieces 54 installed in the circuit control components 4 can respectively contact and connect with the positive terminal 21 and the negative terminal 22 of the battery 2, thereby connecting the batteries 2 in the battery installation space 3 in series in the circulation loop.

[0040] (3) The main circuit control switch is controlled to be closed by the battery management system, and then the external electronic load connected to the external connector 51 is used to charge and discharge the multiple batteries 2;

[0041] (4) The battery management system monitors the charge and discharge currents of the circulation loop constructed by several batteries 2 in real time through the current sensor, and monitors the charge and discharge voltages of the main line of the circulation loop and all the batteries 2 in real time through the voltage sensor; when the current sensor and the voltage sensor detect that the charge of a certain battery 2 is approaching the saturation setting value or the discharge is approaching the exhaustion setting value, the battery management system controls the telescopic rod 47 of the line control component 4 where the battery 2 is located to retract, and the line contact A55 installed in the line control component 4 can contact and connect with the line contact B57, so that the charge and discharge circulation loop can remain unobstructed and the battery 2 is independent of the charge and discharge circulation loop;

[0042] (5) The battery management system monitors the temperature of the battery 2 in the battery installation space 3 during the charging and discharging process in real time through temperature sensors installed in several battery installation spaces 3; once it detects that the ambient temperature of the battery 2 is higher than the warning temperature threshold, the battery management system immediately controls the battery 2 to be independent of the charging and discharging cycle through the line control component 4, and issues a warning reminder through the warning light, alarm sound, etc. connected to the battery management system; if the ambient temperature of the battery 2 continues to rise, once it detects that the ambient temperature of the battery 2 is higher than the alarm temperature threshold, the battery management system immediately disconnects the entire cycle through the main circuit control switch, and controls all line control components 4 to disconnect from their respective batteries 2, and issues an alarm reminder through the warning light, alarm sound, etc. connected to the battery management system.

[0043] Through the above steps, the use management of battery modules based on cascade utilization can be realized, and the charging and discharging of batteries 2 with different performance differences can be independently controlled to avoid oversaturated charging and excessive discharge, thereby improving the cascade utilization efficiency of different batteries, good stability and high safety.

[0044] Example 3:

[0045] A device for a battery module based on cascade utilization of the present invention comprises: a battery detection and sorting device, a battery cascade utilization device and a cascade utilization system.

[0046] The battery detection and sorting device is used to detect the capacity, internal resistance, open circuit voltage and self-discharge parameters of the raw battery, and then sort it according to the range of the detection results of different parameters. A batch of batteries with small performance differences are put together for cascade utilization, which is convenient and reliable.

[0047] The battery recycling device includes a plurality of battery modules based on recycling. Figure 1-3As shown, the structure of the battery module based on cascade utilization is the same as that disclosed in Example 2. Several battery modules based on cascade utilization are combined in series and in parallel to form a whole battery system, and then energy storage is realized through charging and discharging.

[0048] The second-use system is connected to the battery management system in the above-mentioned second-use-based battery module through lines and connectors, and monitors and controls the second-use status of the entire battery system.

[0049] The device of the battery module based on cascade utilization of the present invention detects and sorts different parameters of the raw battery through a battery detection and sorting device, thereby improving the later cascade utilization efficiency of batteries 2 with different performances; by combining a number of battery modules based on cascade utilization in series and parallel, an entire battery system is constructed to improve the large-scale and large-scale utilization of battery modules; through the cascade utilization system, the cascade utilization status of the entire battery system is monitored and controlled to improve utilization efficiency and safety.

[0050] The above is an exemplary description of the invention. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A battery module based on cascade utilization, characterized in that: include: A box-shaped frame (1), a battery (2), a connecting wire assembly (5), and a battery management system. The box-shaped frame (1) is provided with a plurality of mutually parallel partitions (12) to divide the interior of the box-shaped frame (1) into a plurality of battery installation spaces (3). The batteries (2) are provided with a plurality of batteries and are respectively installed in the plurality of battery installation spaces (3). The connecting wire assembly (5) comprises an external connector (51) and a connecting wire (52). The connecting wire (52) connects the plurality of batteries (2) in series and then connects to an external electronic load through the external connector (51) to form a circulation loop and charge and discharge the batteries (2) for repeated utilization. The battery management system is installed on the box-shaped frame (1). Sensors are provided in the circulation loop and the box-shaped frame (1) and are connected to the battery management system through a signal transmission line.

2. A battery module based on cascade utilization according to claim 1, characterized in that: A circuit control component (4) is provided in each battery installation space (3) above the battery (2), and the circuit control component (4) is capable of controlling whether the batteries (2) in the battery installation space (3) are connected in series in a circulation loop.

3. A battery module based on cascade utilization according to claim 2, characterized in that: The circuit control assembly (4) comprises a control substrate (41) and a telescopic rod (47). The two ends of the control substrate (41) are respectively engaged in the box-shaped frame (1) or the partition (12) on both sides of the battery installation space (3), and are controlled by the telescopic rod (47) to slide up and down in the battery installation space (3); the lower end surface of the control substrate (41) is fixedly mounted with a battery positive contact (53) and a battery negative contact (54), which respectively correspond to the positions of the positive terminal (21) and the negative terminal (22) of the battery (2); the upper end surface of the control substrate (41) is fixedly mounted with a circuit contact A (55), which corresponds to the position of a circuit contact B (57) provided on the inner wall of the box-shaped frame (1) in the battery installation space (3); the battery positive contact (53), the battery negative contact (54), the circuit contact A (55), and the circuit contact B (57) are connected to a circulation loop through a circuit.

4. A battery module based on cascade utilization according to claim 3, characterized in that: Both ends of the control substrate (41) are provided with longitudinal slides (45), and the slides (45) are engaged in slide grooves provided on the inner wall of the box-shaped frame (1) or the partition (12) on one side of the battery installation space (3).

5. A battery module based on cascade utilization according to claim 4, characterized in that: The control substrate (41) is respectively fixed with a contact piece mounting plate 1 (42) and a contact piece mounting plate 2 (43) on both upper and lower sides via a plurality of springs (44). The battery positive contact piece (53) and the battery negative contact piece (54) are both mounted on the lower end surface of the contact piece mounting plate 1 (42), and the circuit contact piece A (55) is mounted on the upper end surface of the contact piece mounting plate 2 (43).

6. A battery module based on cascade utilization according to claim 5, characterized in that: Both sides of the second contact plate installation plate (43) are provided with L-shaped limit plates (46), and the telescopic rod (47) is provided with two symmetrical ones, one end of which is installed on the inner wall of the box-shaped frame (1) in the battery installation space (3), and the other end is fixedly installed on the two L-shaped limit plates (46).

7. A battery module based on cascade utilization according to claim 6, characterized in that: A plurality of universal balls (48) are fixedly mounted on both end surfaces of the contact piece mounting plate 1 (42) and the contact piece mounting plate 2 (43). The universal balls (48) mounted on both ends of the contact piece mounting plate 1 (42) are in contact with the inner walls of the two slide plates (45) respectively, and the universal balls (48) mounted on both ends of the contact piece mounting plate 2 (43) are in contact with the two L-shaped limit plates (46) respectively.

8. The battery module based on cascade utilization according to claim 3, characterized in that: In the battery installation space (3), the telescopic rod (47) of the circuit control assembly (4) is extended under the control of a motor, and the battery positive contact piece (53) and the battery negative contact piece (54) installed in the circuit control assembly (4) can respectively contact and connect with the positive terminal (21) and the negative terminal (22) of the battery (2), so that the battery (2) in the battery installation space (3) is connected in series in the circulation loop; the telescopic rod (47) of the circuit control assembly (4) is retracted under the control of a motor, and the circuit contact piece A (55) installed in the circuit control assembly (4) can contact and connect with the circuit contact piece B (57), so that the circulation loop can be kept unobstructed and the circulation loop can be kept away from the battery (2) in the battery installation space (3).

9. The battery module based on cascade utilization according to claim 1, characterized in that: The sensors include a current sensor, a voltage sensor, a temperature sensor, and a main circuit control switch. The current sensor is arranged on the main line of the circulation loop and is used to detect the charge and discharge current passing through the circulation loop; the main circuit control switches are all arranged on the main line of the circulation loop and are used to control the connection and disconnection of the circulation loop; a plurality of voltage sensors are arranged and connected to the main line of the circulation loop and the two ends of a plurality of batteries (2) and are used to detect the charge and discharge voltage passing through the main line of the circulation loop and the two ends of all batteries (2); a plurality of temperature sensors are arranged and are respectively installed in a plurality of battery installation spaces (3) and are used to monitor the temperature of the batteries (2) in the battery installation spaces (3) during the charge and discharge process.

10. A device for a battery module based on cascade utilization according to any one of claims 1 to 9, characterized in that: include: Battery detection and sorting equipment, battery recycling equipment and recycling system; The battery detection and sorting device is used to detect the capacity, internal resistance, open circuit voltage, and self-discharge parameters of the raw battery, and then sort it according to the intervals of the detection results of different parameters to facilitate subsequent cascade utilization; The battery recycling device includes a plurality of battery modules based on recycling, which are combined in series and in parallel to form a whole battery system, and then stored energy is utilized through charging and discharging; The cascade utilization system is connected to the battery management system in the battery module based on cascade utilization through lines and connectors, and monitors and controls the cascade utilization status of the entire battery system.

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