Storage battery equalization device capable of controlling on-off

Abstract

The utility model discloses a storage battery equalizing device capable of controlling on-off. The storage battery equalizing device comprises a BMU module, a monitoring module, an equalizing module, a battery pack, a standby power supply and an air cooling module, the BMU module is respectively connected with the monitoring module and the balancing module; the equalization module is respectively connected with the battery pack and the standby power supply; the equalization module transfers the equalized electric energy in the charging process of the battery pack to the standby power supply; the standby power supply is connected with the air cooling module and provides electric energy for the air cooling module; and the air cooling module is connected with the BMU module and is mounted below the battery pack. According to the utility model, the working state of the storage battery pack can be monitored, the on-off of the storage battery in the charging process is controlled according to the temperature, voltage and current of the battery pack monitored in real time in the charging process of the storage battery, and the battery pack is ensured to always run in a safe and reasonable working range in the charging process.

Description

Technical Field

[0001] The utility model relates to the technical field of storage batteries, in particular to a controllable on-off storage battery equalization device. Background Art

[0002] Storage batteries are increasingly used in various fields, such as electric vehicles, energy storage power stations, communication base stations, etc. However, during the use of storage batteries, due to differences between individual batteries, the charge state of each battery in the battery pack is inconsistent during charging and discharging. This inconsistency will affect the overall performance and service life of the battery pack. In order to solve this problem, traditional battery balancing technology usually adopts passive balancing, that is, the energy of high-capacity batteries is consumed through resistance, which is inefficient and causes energy waste. Although active balancing technology can realize energy transfer between batteries, the existing active balancing device still has some deficiencies in function and structure. It cannot monitor the temperature, voltage and current of the battery pack, and cannot control the opening and closing of the battery during charging, resulting in unsatisfactory balancing effect. Utility Model Content

[0003] The purpose of the utility model is to provide a battery balancing device with controllable on / off, which can monitor the working state of the battery pack, monitor the temperature, voltage and current of the battery pack in real time during the battery charging process, control the on / off of the battery charging process, and ensure that the battery pack always operates within a safe and reasonable working range during the charging process. The specific technical solution is as follows:

[0004] A battery balancing device with controllable on and off, comprising a BMU module, a monitoring module, a balancing module, a battery pack, a backup power supply and an air cooling module;

[0005] A BMU module, wherein the BMU module is connected to the monitoring module and the balancing module respectively;

[0006] A monitoring module, wherein the monitoring module comprises a temperature sensor, a voltage sensor and a current sensor; the temperature sensor, the voltage sensor and the current sensor are respectively installed on the battery pack to monitor the temperature, voltage and current of the battery pack; the temperature sensor, the voltage sensor and the current sensor are respectively connected to the BMU module;

[0007] A balancing module, the balancing module is connected to the battery pack and the backup power supply respectively; the balancing module transfers the electric energy balanced during the charging process of the battery pack to the backup power supply;

[0008] A backup power supply, which is connected to the air cooling module to provide power to the air cooling module;

[0009] The air cooling module is connected to the BMU module and is installed below the battery pack.

[0010] Preferably, the balancing module is an active balancing module.

[0011] Preferably, it also includes a fixing frame, a positioning plate and a support beam; a support beam is arranged in the middle of the fixing frame; the positioning plate is mounted on the support beam; the battery pack is mounted in the fixing frame and the side surface is connected to the positioning plate.

[0012] Preferably, it also includes a positioning beam; the positioning beam is installed in the middle of the positioning plate.

[0013] Preferably, the positioning plate includes a fixing plate, a U-shaped connecting plate and a support rod; the support rod is installed on the top surface of the support beam; U-shaped connecting plates are respectively arranged on both sides of the battery pack; the side of the U-shaped connecting plate is connected to the side of the battery pack, the lower end is placed on the top surface of the support rod, and a fixing plate is arranged on the upper end; the two ends of the fixing plate are respectively connected to a U-shaped connecting plate on the side of the battery pack, and the fixing plate is detachably connected to the U-shaped connecting plate by bolts.

[0014] Preferably, the air cooling module includes a sealed box, a fan and a sound insulation board; the sealed box is installed below the battery pack, and fans are installed on both sides of the inside of the sealed box; the sound insulation board is installed in the middle of the sealed box; and the sound insulation board is arranged horizontally.

[0015] Preferably, a plurality of through holes are formed on the body of the sound insulation board.

[0016] Preferably, two sound insulation boards are horizontally installed in the middle of the sealed box, and the two sound insulation boards are parallel to each other.

[0017] Compared with the existing technology, the utility model has the following beneficial effects:

[0018] The utility model realizes monitoring of the working state of the battery pack by setting up a BMU module, a monitoring module and a balancing module. The monitoring module can monitor the temperature, voltage and current of the battery pack in real time, and send the detected data to the BMU module, and the BMU module controls the on and off of the battery during charging to ensure that the battery pack always operates within a safe and reasonable working range during the charging process.

[0019] The balancing module can balance the electric energy during the charging process of the battery pack and transfer the excess electric energy to the backup power supply, which effectively avoids the imbalance between the single cells in the battery pack and prolongs the overall service life of the battery pack.

[0020] The backup power supply is connected to the air cooling module, and the air cooling module is powered by the electric energy transferred by the balancing module, so that the air cooling module can cool down the battery pack in time. The air cooling module installed under the battery pack can directly and efficiently reduce the temperature of the battery pack, ensuring that the battery pack works in a suitable temperature environment, thereby improving the performance and stability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a schematic diagram of the system framework of the utility model.

[0023] Figure 2 It is a top view of the utility model.

[0024] Figure 3 It is a front view of the utility model.

[0025] Figure 4 It is a structural schematic diagram of a positioning plate of the utility model.

[0026] Figure 5 It is a structural schematic diagram of the air cooling module of the utility model.

[0027] Description of main reference numerals:

[0028] 1-fixed frame, 2-battery pack, 3-BMU module, 4-positioning beam, 5-positioning plate, 6-backup power supply, 7-air cooling module, 8-fixed plate, 9-U-shaped connecting plate, 10-support beam, 11-support rod, 12-sealed box, 13-fan, 14-sound insulation board. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0033] Example 1

[0034] As shown in the figure, a battery balancing device with controllable on and off includes a BMU module, a monitoring module, a balancing module, a battery pack, a backup power supply and an air cooling module;

[0035] A BMU module, wherein the BMU module is connected to the monitoring module and the balancing module respectively;

[0036] A monitoring module, wherein the monitoring module comprises a temperature sensor, a voltage sensor and a current sensor; the temperature sensor, the voltage sensor and the current sensor are respectively installed on the battery pack to monitor the temperature, voltage and current of the battery pack; the temperature sensor, the voltage sensor and the current sensor are respectively connected to the BMU module;

[0037] A balancing module, the balancing module is connected to the battery pack and the backup power supply respectively; the balancing module transfers the electric energy balanced during the charging process of the battery pack to the backup power supply;

[0038] A backup power supply, which is connected to the air cooling module to provide power to the air cooling module;

[0039] The air cooling module is connected to the BMU module and is installed below the battery pack.

[0040] Next, the working principle of the embodiment is described in detail to enable those skilled in the art to better understand the present invention:

[0041] The temperature sensor, voltage sensor and current sensor monitor the temperature, voltage and current of the battery pack in real time and transmit the data to the BMU module.

[0042] The BMU module first receives the initial status information of the battery pack from the monitoring module, including parameters such as the voltage, current and temperature of the battery pack. Based on this data, the BMU module accurately calculates the appropriate charging current and voltage, and sends a turn-on instruction to the charging circuit to start the charging process.

[0043] During the charging process, the BMU module continuously monitors various parameters of the battery pack. Once the voltage reaches the preset upper limit or the temperature exceeds the safety threshold, the BMU module will quickly issue a disconnection command to cut off the charging circuit in time to prevent overcharging from causing damage to the battery pack.

[0044] The BMU module controls the operation of the balancing module based on these data. The balancing module transfers the balanced electric energy during the charging process of the battery pack to the backup power supply. The backup power supply provides electric energy for the air cooling module. The air cooling module cools the battery pack, thereby achieving balanced management of the battery pack electric energy and improving the efficiency and life of the battery pack. The excess electric energy is transferred to the backup power supply, thereby achieving effective use of energy. The air cooling module helps to maintain the normal operating temperature of the battery pack and ensure its performance and safety.

[0045] Example 2

[0046] The difference between this embodiment and embodiment 1 is that the balancing module is an active balancing module. The balancing module is an active balancing module, including a capacitor C, a switch S1, a switch S2, a switch S3 and a switch S4; the switch S1 and the switch S2 are connected to the capacitor C and the battery pack respectively; the switch S3 and the switch S4 are connected to the capacitor C and the backup power supply respectively.

[0047] When balancing, S1 and S4 are closed, S2 and S3 are disconnected, and capacitor C is charged in parallel with the battery pack. Then, S1 and S4 are disconnected, S2 and S3 are closed, and capacitor C is discharged in parallel with the backup power supply, thereby realizing the transfer of electric energy from the battery pack to the backup power supply.

[0048] The working principle of this embodiment is the same as that of Embodiment 1.

[0049] Example 3

[0050] This embodiment differs from Embodiment 2 in that it further includes a fixing frame, a positioning plate and a support beam; a support beam is provided in the middle of the fixing frame; the positioning plate is mounted on the support beam; the battery pack is mounted in the fixing frame and connected to the positioning plate on the side. The fixing frame and the support beam play a supporting role, and the positioning plate is used to fix the battery pack. Several support beams are provided in the fixing frame, and a positioning plate is installed on each support beam. The battery pack is installed between two adjacent positioning plates to fix the battery pack.

[0051] The working principle of this embodiment is the same as that of Embodiment 1.

[0052] Example 4

[0053] The difference between this embodiment and embodiment 3 is that it further comprises a positioning beam, which is installed in the middle of the positioning plate. The positioning beam plays a fixing role, and is installed in the middle of the positioning plate to connect multiple positioning plates.

[0054] The working principle of this embodiment is the same as that of Embodiment 1.

[0055] Example 5

[0056] The difference between this embodiment and Embodiment 4 is that the positioning plate includes a fixing plate, a U-shaped connecting plate and a support rod; the support rod is installed on the top surface of the support beam; U-shaped connecting plates are respectively arranged on both sides of the battery pack; the side of the U-shaped connecting plate is connected to the side of the battery pack, the lower end is placed on the top surface of the support rod, and a fixing plate is arranged on the upper end; the two ends of the fixing plate are respectively connected to a U-shaped connecting plate on the side of the battery pack, and the fixing plate is detachably connected to the U-shaped connecting plate by bolts.

[0057] The external frame, positioning plate and support beam provide a stable installation structure for the battery pack, enhance the stability of the battery pack during operation, effectively reduce damage and failure of the battery pack due to vibration and the like, and improve the reliability of the entire system.

[0058] The working principle of this embodiment is the same as that of Embodiment 1.

[0059] Example 6

[0060] This embodiment differs from Embodiment 5 in that the air cooling module comprises a sealed box, a fan and a sound insulation board; the sealed box is installed below the battery pack, and fans are installed on both sides of the inside of the sealed box; a sound insulation board is installed in the middle of the sealed box; and the sound insulation board is arranged horizontally.

[0061] The air cooling module has fans installed on both sides of the sealed box, the two fans are installed opposite to each other, the upper end of the sealed box is opened, and the airflow blown by the fans is blown out from the opening at the upper end of the sealed box to cool the battery pack; the sound insulation board is installed in the middle of the sealed box, and the airflow blown by the fans installed on both sides of the sealed box passes through the sound insulation board, which can block and absorb the noise generated by the operation of the fans. The air cooling module can not only cool the battery pack, but also reduce the noise generated when the air cooling module is in operation.

[0062] The working principle of this embodiment is the same as that of Embodiment 1.

[0063] Example 7

[0064] The difference between this embodiment and embodiment 6 is that a plurality of through holes are provided on the body of the sound insulation board. The plurality of through holes provided on the body of the sound insulation board facilitate airflow, thereby ensuring the sound insulation effect without affecting the air cooling effect.

[0065] The working principle of this embodiment is the same as that of Embodiment 1.

[0066] Example 8

[0067] The difference between this embodiment and embodiment 7 is that two sound insulation boards are horizontally installed in the middle of the sealed box, and the two sound insulation boards are parallel to each other. The two sound insulation boards are horizontally installed in the middle of the sealed box and are parallel to each other, which enhance the noise blocking and absorption effect, significantly reduce the noise generated by the air cooling module, and provide a quieter environment for equipment operation.

[0068] The working principle of this embodiment is the same as that of Embodiment 1.

[0069] In summary, the utility model realizes the monitoring of the working state of the battery pack by setting up the BMU module, the monitoring module and the balancing module. The monitoring module can monitor the temperature, voltage and current of the battery pack in real time, and send the detected data to the BMU module. The BMU module controls the on and off of the battery during charging according to the battery pack status information, ensuring that the battery pack always operates within a safe and reasonable working range during the charging process.

[0070] The balancing module can balance the electric energy during the charging process of the battery pack and transfer the excess electric energy to the backup power supply, which effectively avoids the imbalance between the single cells in the battery pack and prolongs the overall service life of the battery pack.

[0071] The backup power supply is connected to the air cooling module, and the air cooling module is powered by the electric energy transferred by the balancing module, so that the air cooling module can cool down the battery pack in time. The air cooling module installed under the battery pack can directly and efficiently reduce the temperature of the battery pack, ensuring that the battery pack works in a suitable temperature environment, thereby improving the performance and stability of the battery pack.

[0072] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A battery balancing device with controllable on / off function, characterized in that: Including BMU module, monitoring module, balancing module, battery pack, backup power supply and air cooling module; A BMU module, wherein the BMU module is connected to the monitoring module and the balancing module respectively; A monitoring module, wherein the monitoring module comprises a temperature sensor, a voltage sensor and a current sensor; the temperature sensor, the voltage sensor and the current sensor are respectively installed on the battery pack to monitor the temperature, voltage and current of the battery pack; the temperature sensor, the voltage sensor and the current sensor are respectively connected to the BMU module; A balancing module, the balancing module is connected to the battery pack and the backup power supply respectively; the balancing module transfers the electric energy balanced during the charging process of the battery pack to the backup power supply; A backup power supply, which is connected to the air cooling module to provide power to the air cooling module; The air cooling module is connected to the BMU module and is installed below the battery pack.

2. A battery equalization device with controllable on / off function according to claim 1, characterized in that: The balancing module is an active balancing module.

3. The battery equalization device with controllable on / off function according to claim 1, characterized in that: It also includes a fixing frame, a positioning plate and a support beam; a support beam is arranged in the middle of the fixing frame; the positioning plate is installed on the support beam; the battery pack is installed in the fixing frame, and the side surface is connected to the positioning plate.

4. A battery equalization device with controllable on / off function according to claim 3, characterized in that: It also includes a positioning beam; the positioning beam is installed in the middle of the positioning plate.

5. The battery equalization device with controllable on / off function according to claim 3, characterized in that: The positioning plate includes a fixing plate, a U-shaped connecting plate and a support rod; the support rod is installed on the top surface of the support beam; U-shaped connecting plates are respectively arranged on both sides of the battery pack; the side of the U-shaped connecting plate is connected to the side of the battery pack, the lower end is placed on the top surface of the support rod, and a fixing plate is arranged on the upper end; the two ends of the fixing plate are respectively connected to a U-shaped connecting plate on the side of the battery pack, and the fixing plate is detachably connected to the U-shaped connecting plate by bolts.

6. The battery equalization device with controllable on / off function according to claim 1, characterized in that: The air cooling module includes a sealed box, a fan and a sound insulation board; the sealed box is installed below the battery pack, and fans are installed on both sides of the sealed box; a sound insulation board is installed in the middle of the sealed box; and the sound insulation board is arranged horizontally.

7. A battery equalization device with controllable on / off function according to claim 6, characterized in that: The sound insulation board has a plurality of through holes on its body.

8. The battery equalization device with controllable on / off function according to claim 6, characterized in that: Two sound insulation boards are horizontally installed in the middle of the sealed box, and the two sound insulation boards are parallel to each other.

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