Rechargeable battery charging and discharging module and device based on liquid cooling heat dissipation

Abstract

The invention discloses a rechargeable battery charging and discharging module and device based on liquid cooling heat dissipation, and the module comprises a first supporting frame which is used for supporting a restraining tray equipped with a rechargeable battery, and the two sides of the first supporting frame are vertically provided with guide columns which are in sliding connection with the first supporting frame; the two fixing plates are oppositely arranged at the tops of the guide columns, a second supporting frame is arranged between the two fixing plates, a power module is arranged on the second supporting frame, and an electric connector is arranged on the power module; a heat dissipation box covers the power supply module, the heat dissipation box comprises a heat dissipation plate forming a side wall, the heat dissipation plate comprises a plurality of fins and a heat exchange pipe penetrating through the fins, the heat exchange pipe is provided with a liquid inlet and a liquid outlet, and the heat dissipation box is further provided with a first pipeline connected with the liquid inlet and a second pipeline connected with the liquid outlet. Heat emitted by the charging and discharging module and the power supply module is directly absorbed by the heat dissipation plate so as to achieve the effect of rapid heat dissipation, and meanwhile, the heat dissipation box does not occupy too much space, and is compact in structure and low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of battery capacity division equipment, and in particular to a rechargeable battery charging and discharging module and device based on liquid cooling and heat dissipation. Background Art

[0002] With the widespread application of rechargeable batteries in portable electronic devices, electric vehicles, energy storage systems and other fields, the importance of battery manufacturing technology has become increasingly prominent. Among them, battery capacity division and formation process is an important part of battery manufacturing process.

[0003] Formation refers to the process of charging and discharging the manufactured lithium-ion battery with a small current. This process activates the chemical substances inside the battery through strict charge and discharge cycles, thereby stimulating its maximum energy. Capacity grading ensures uniform performance of the battery through capacity sorting and performance screening and grading. During the capacity grading process, the battery will undergo rigorous testing to ensure that its capacity and performance meet the design requirements. Only batteries with test results that meet or exceed the design capacity can be considered qualified. Formation and capacity grading are usually performed in a device that can charge and discharge a large number of batteries at the same time, similar to a charger.

[0004] For the charging and discharging equipment used for capacity division, power heat dissipation is an issue that cannot be ignored, because a large number of batteries need to be charged and discharged at the same time. If the heat dissipation effect is not good, it will seriously affect the charging and discharging efficiency. At present, the heat dissipation of this type of charging and discharging equipment is mainly achieved through air cooling and water cooling. For the existing water-cooled heat dissipation, due to the extensive use of radiators and water-cooling pipes, there are problems such as large floor space, low space utilization, and high equipment material costs. Specifically, the radiator is located outside the equipment, occupying a large space. The equipment needs to be laid out with many pipes and valves, which also increases material and construction costs. Summary of the invention

[0005] The object of the present invention is to provide a rechargeable battery charging and discharging module and device based on liquid cooling with good heat dissipation performance and compact heat dissipation structure.

[0006] In order to achieve the above object, the present invention provides a rechargeable battery charging and discharging module based on liquid cooling and heat dissipation, which comprises: A first support frame, the first support frame is used to support a restraint tray equipped with a rechargeable battery, and guide columns slidably connected to the first support frame are vertically arranged on opposite sides of the first support frame; Two fixing plates are arranged opposite to each other at the top of the guide column, a second support frame opposite to the first support frame is arranged between the two fixing plates, a power module is arranged on the second support frame, and a plurality of electrical connectors extending toward the first support frame are arranged on the power module, and the power module is used to provide charging power or discharging load for the battery in the restraint tray; The first support frame can slide up and down along the guide column under the action of the lifting drive, so that the electrode end of the rechargeable battery in the restraint tray abuts against or separates from the electrical connector; A heat sink is provided on the power module, and the heat sink includes a heat sink forming a side wall, and the heat sink includes a plurality of fins and a heat exchange tube passing through the fins, and the heat exchange tube is provided with a liquid inlet and a liquid outlet. The heat sink is also provided with a first pipe connected to the liquid inlet and a second pipe connected to the liquid outlet, the first pipe is used to transport low-temperature liquid refrigerant into the heat exchange tube, and the second pipe is used to recover the high-temperature refrigerant flowing out of the heat exchange tube.

[0007] Preferably, the heat dissipation box comprises a top plate and an end plate, and two adjacent sides of the heat dissipation plate are respectively in contact with the top plate and the end plate, and an accommodation space for accommodating the power module is formed between the two opposite heat dissipation plates.

[0008] Preferably, the liquid inlet and the liquid outlet are connected to the first pipe and the second pipe respectively through telescopic bellows.

[0009] Preferably, the power module comprises a chassis and a cooling fan arranged on the chassis, and an air outlet of the cooling fan faces the heat dissipation plate.

[0010] Preferably, a first slide rail is respectively disposed on the inner side of the two fixing plates, and the second supporting frame is slidably connected to the first slide rail.

[0011] Preferably, the first support frame includes an outer frame and support rods spaced apart in the outer frame, and the outer frame is slidably connected to the guide columns; a mounting frame is provided in the gap between the support rods, and a temperature sensing probe extending upward is provided on the mounting frame, and the temperature sensing probe can be extended into the restraint tray and abut against the rechargeable battery therein.

[0012] Preferably, it further comprises a plurality of support platforms which are arranged vertically and located inside the outer frame. When the first support frame slides up and down along the guide column, the support platforms can pass through the gaps between the support rods. The support platforms are used to cache the restraint tray.

[0013] Preferably, a second slide rail extending laterally is also provided at the bottom of the support rod, and the mounting frame is slidably connected to the second slide rail. The second slide rail is also provided with a telescopic drive connected to the mounting frame, and the telescopic drive is used to drive the mounting frame to slide along the second slide rail to adjust the position of the temperature sensing probe in the horizontal plane.

[0014] Preferably, a support plate is also provided on the second support frame, and a plurality of limit grooves are arranged at intervals on the support plate; the electrical connector comprises a fixing sleeve, a connecting head and a first elastic member, and the connecting head is inserted into the fixing sleeve and can slide up and down relative to the fixing sleeve; the connecting head comprises a first connecting end for connecting to the power module and a second connecting end for abutting against the electrode end of the rechargeable battery, one end of the first elastic member abuts against the second connecting end, and the other end of the first elastic member abuts against the fixing sleeve, and the fixing sleeve is clamped with the limit grooves; the upper end of the connecting head is electrically connected to the power module through a flexible member.

[0015] Preferably, the electrical connector further comprises a second elastic member, one end of the second elastic member abuts against the fixing sleeve, and the other end of the second elastic member abuts against the first connecting end.

[0016] The present invention also provides a rechargeable battery charging and discharging device, which comprises a sealed frame, in which the rechargeable battery charging and discharging module as described above is arranged.

[0017] Preferably, the internal space of the frame includes a first part, a second part and a third part located between the first part and the second part, at least one rechargeable battery charging and discharging module is respectively arranged in the first part and the second part, the third part is provided with a liquid inlet main pipe and a liquid outlet main pipe, and the first pipe and the second pipe located in the first part and the second part are respectively connected to the liquid inlet main pipe and the liquid outlet main pipe.

[0018] Compared with the prior art, the rechargeable battery charging and discharging module provided by the above technical solution of the present invention has a second support frame installed above the first support frame for carrying the restraint tray equipped with the rechargeable battery, the power module is installed on the second support frame, and a heat sink is directly covered on the power module, and the side wall of the heat sink is composed of a water-cooled heat sink. Therefore, when the rechargeable battery located on the first support frame is charged and discharged by the power module, the heat emitted by the power module is directly absorbed by the heat sink to achieve the effect of rapid heat dissipation. At the same time, the heat sink does not occupy too much space, has a compact structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of the charging and discharging module in an embodiment of the present invention.

[0020] Figure 2 for Figure 1 Side view of.

[0021] Figure 3 It is a three-dimensional structural diagram of the heat dissipation box in an embodiment of the present invention.

[0022] Figure 4 for Figure 3 Three-dimensional structural diagram of the heat sink.

[0023] Figure 5 3D is a three-dimensional structural diagram of a power module in an embodiment of the present invention.

[0024] Figure 6 for Figure 1 The lower structure diagram of the charging and discharging module.

[0025] Figure 7 for Figure 6 Installation structure diagram of the temperature sensing probe.

[0026] Figure 8 2 is a three-dimensional structural diagram of an electrical connector in an embodiment of the present invention.

[0027] Fig. 9 FIG. 4 is a diagram of the installation structure of the electrical connector in an embodiment of the present invention.

[0028] Fig.10 for Fig. 9 Side view of.

[0029] Fig.11 FIG. 1 is a plan view of the internal structure of a charging and discharging device in one embodiment of the present invention.

[0030] Fig.12 It is a front view of a charging and discharging device in another embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0032] This embodiment discloses a rechargeable battery charging and discharging module for use in the capacity division operation of a rechargeable battery. Figures 1 to 5 The charging and discharging module includes a first support frame 1, a guide column 2, a fixing plate 30, a second support frame 4, a power module 5 and a heat dissipation box 7.

[0033] The first support frame 1 is used to support the restraint tray with rechargeable batteries, and the guide posts 2 are vertically arranged on two opposite sides of the first support frame 1, and the first support frame 1 is slidably connected to the guide posts 2. It should be noted that the restraint tray is a common fixture for battery fractionation, which is used to load the batteries to be processed and provide a certain restraint pressure for the batteries. Therefore, the specific structure of the restraint tray is not described in detail in this embodiment.

[0034] The two fixing plates 30 are arranged opposite to each other at the top of the guide column 2, and the installation space formed between the two fixing plates 30 is directly opposite to the first support frame 1. A second support frame 4 opposite to the first support frame 1 is arranged in the installation space between the two fixing plates 30, and a power module 5 is arranged on the second support frame 4, and a plurality of electrical connectors 6 extending toward the direction of the first support frame 1 are arranged on the power module 5, and the power module 5 is used to provide charging power or discharge load for the battery in the restraint tray.

[0035] During operation, the first support frame 1 can slide up and down along the guide column 2 under the action of the lifting driver (not shown), so that the electrode end of the rechargeable battery in the restraint tray abuts against or separates from the electrical connector 6.

[0036] A heat sink 7 is provided on the power module 5 to confine the working environment of the power module 5 to the limited space in the heat sink 7. The heat sink 7 includes a heat sink 70 forming a side wall, the heat sink 70 includes a plurality of fins 71 and a heat exchange tube 72 passing through the fins 71, the heat exchange tube 72 is provided with a liquid inlet 73 and a liquid outlet 74, and the heat sink 7 is also provided with a first pipe L1 connected to the liquid inlet 73 and a second pipe L2 connected to the liquid outlet 74, the first pipe L1 is used to transport low-temperature liquid refrigerant into the heat exchange tube 72, and the second pipe L2 is used to recover the high-temperature refrigerant flowing out of the heat exchange tube 72.

[0037] For the charging and discharging module of the above structure, during operation, the restraint tray with the battery is placed on the first support frame 1, and then the lifting drive is started to drive the first support frame 1 to move upward, so that the electrode end of the battery abuts against the electrical connector 6, so that the battery and the power module 5 are connected to perform charging or discharging operations. The heat emitted during the operation of the power module 5 enters the heat sink 70 and is absorbed by the fins 71. The fins 71 exchange heat with the heat exchange tubes 72 to introduce the absorbed heat into the liquid refrigerant in the heat exchange tubes 72, and as the refrigerant circulates, the refrigerant in the heat exchange tubes 72 is always in a low temperature state, thereby achieving rapid heat dissipation of the power module 5. Moreover, the heat dissipation box 7 does not take up too much space, has a compact structure, and is low in cost.

[0038] Specifically, the heat sink 7 includes a top plate 75 and an end plate 76. The adjacent two sides of the heat sink 70 are respectively in contact with the top plate 75 and the end plate 76. An accommodation space 77 for accommodating the power module 5 is formed between the two opposite heat sinks 70. The liquid inlet 73 and the liquid outlet 74 are both arranged on the end plate 76.

[0039] On the other hand, the power module 5 includes a chassis 50 and a cooling fan 51 disposed on the chassis. The air outlet of the cooling fan 51 faces the heat sink 70 to quickly guide the heat emitted by the power module 5 into the heat sink 70 .

[0040] In addition, to facilitate the installation of the water circulation pipeline, the liquid inlet 73 and the liquid outlet 74 are connected to the first pipeline L1 and the second pipeline L2 respectively through the telescopic bellows 78.

[0041] On the other hand, a first slide rail 31 is respectively disposed on the inner side of the two fixing plates 30, and the second support frame 4 is slidably connected to the first slide rail 31. In this way, by pulling the second support frame 4 to slide along the first slide rail 31, the front and rear position of the electrical connector 6 can be adjusted to reduce the matching accuracy requirements of the first support frame 1 and the second support frame 4.

[0042] On the other hand, Figure 6 The first support frame 1 includes an outer frame 10 and support rods 11 spaced apart in the outer frame 10, and the outer frame 10 is slidably connected to the guide column 2. A mounting frame 12 is provided in the gap between the support rods 11, and a temperature sensing probe T extending upward is provided on the mounting frame 12, and the temperature sensing probe T can be extended into the restraint tray and abut against the rechargeable battery therein.

[0043] By setting the temperature sensing probe T, the temperature of the battery can be monitored in real time during the operation of charging or discharging the battery, so as to monitor the temperature of the battery and avoid safety problems caused by excessive temperature of the battery.

[0044] In addition, the charging and discharging module in this embodiment also includes a plurality of vertically arranged support platforms 8 located inside the outer frame 10. When the first support frame 1 slides up and down along the guide column 2, the support platform 8 can pass through the gap between the support rods 11. The support platform 8 is used to cache the restraint tray.

[0045] In this embodiment, when placing the restraint tray on the first support frame 1, the first support frame 1 is first driven by the lifting drive to slide to the bottom of the guide column 2. At this time, the temperature sensing probe T follows the first support frame 1 and moves synchronously to the bottom of the guide column 2 to avoid the influence of the temperature sensing probe T on the restraint tray. Then, the restraint tray is placed on the support table 8. Next, the first support frame 1 is moved upward. As the first support frame 1 moves upward, the temperature sensing probe T abuts against the side wall of the battery from the gap at the bottom of the restraint tray. At the same time, the support rod 11 abuts against the bottom of the restraint tray to lift the restraint tray and continue to move toward the second support frame 4 until the electrode end of the battery in the restraint tray abuts against the electrical connector 6.

[0046] Furthermore, if Figure 6 and Figure 7 A second slide rail 13 extending laterally is also provided at the bottom of the support rod 11, and the mounting frame 12 is slidably connected to the second slide rail 13. A telescopic driver 14 connected to the mounting frame 12 is also provided on the second slide rail 13. The telescopic driver 14 is used to drive the mounting frame 12 to slide along the second slide rail 13 to adjust the position of the temperature sensing probe T in the horizontal plane so that the temperature sensing probe T is opposite to the gap at the bottom of the restraint tray.

[0047] On the other hand, Figures 8 to 10 A support plate 40 is also provided on the second support frame 4, and a plurality of limiting grooves 41 are arranged at intervals on the support plate 40.

[0048] The electrical connector 6 comprises a fixing sleeve 60, a connecting head 61 and a first elastic member 62. The connecting head 61 is inserted into the fixing sleeve 60 and can slide up and down relative to the fixing sleeve 60.

[0049] The connector 61 includes a first connection end 63 for connecting to the power module 5 and a second connection end 64 for abutting against an electrode end of a rechargeable battery.

[0050] One end of the first elastic member 62 abuts against the second connection end 64, and the other end of the first elastic member 62 abuts against the fixing sleeve 60, and the fixing sleeve 60 is engaged with the limiting groove 41. The upper end of the connector 61 is electrically connected to the power module 5 through the flexible member 65.

[0051] In this embodiment, the electrical connector 6 is fixed to the support plate 40 by the cooperation of the fixing sleeve 60 and the limiting groove 41, so as to prevent the electrical connector 6 from moving left and right during the contact process with the electrode end of the battery. In addition, when the electrode end of the battery abuts against the second connection end 64 of the connector 61, the connector 61 moves upward, the first elastic member 62 is compressed, and an elastic restoring force is generated. Under the action of the elastic restoring force, the connector 61 is tightly abutted against the electrode end of the battery to avoid a virtual connection.

[0052] Furthermore, the electrical connector 6 further includes a second elastic member 66, one end of which abuts against the fixing sleeve 60, and the other end of which abuts against the first connection end 63. In this embodiment, when the restraining tray moves downward to separate the battery from the connector 61, the first elastic member 62 drives the connector 61 to move downward. At this time, if the connector 61 moves too far downward, the second elastic member 66 will be compressed, thereby preventing the connector 61 from moving further downward. Therefore, in this embodiment, through the cooperation of the second elastic member 66 and the first elastic member 62, at the end of the operation, it can be ensured that the connector 61 does not move too far downward, so that the second connection end 64 of the connector 61 returns to its original position.

[0053] like Fig.11 In another preferred embodiment of the present invention, a rechargeable battery charging and discharging device is also disclosed, which includes a sealed frame 9, in which the rechargeable battery charging and discharging module disclosed in the above embodiment is arranged. In this embodiment, the charging and discharging module is sealed by the sealed frame 9, and a closed space is formed in the frame 9. In this way, when the module is charged and discharged, the heat sink 70 discharges part of the cold air to the outside. At this time, since the batteries in the restraint tray also dissipate heat, a high-pressure area is formed in the restraint tray area, and a low-pressure area is formed in the heat sink 7. Then, the high-temperature airflow in the area where the restraint tray is located enters the heat sink 7, and is discharged to the outside after heat exchange through the heat sink 70, thereby forming a convection cycle H between the heat sink 7 in the charging and discharging module, the restraint tray, and the area outside the charging and discharging module. Therefore, by setting the sealed frame 9, not only the power module 5 can be cooled, but also the batteries in the restraint tray area can be cooled.

[0054] On the other hand, Fig.12 The internal space of the frame 9 includes a first part K1, a second part K2 and a third part K3 located between the first part K1 and the second part K2, at least one rechargeable battery charging and discharging module is respectively arranged in the first part K1 and the second part K2, the third part K3 is provided with a liquid inlet main pipe G1 and a liquid outlet main pipe G2, and the first pipeline L1 and the second pipeline L2 located in the first part K1 and the second part K2 are respectively connected to the liquid inlet main pipe G1 and the liquid outlet main pipe G2.

[0055] In this embodiment, the rack 9 is divided into two layers, one upper layer and one lower layer, and a charging and discharging module is arranged on the left and right sides of each layer, respectively. The inlet main pipe G1 and the outlet main pipe G2 connected to the refrigerant storage tank are arranged in the middle area, saving pipes and making the pipe layout more reasonable. In addition, a distribution box D is arranged on both sides of the rack 9.

[0056] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A rechargeable battery charging and discharging module based on liquid cooling, characterized in that: include: A first support frame, the first support frame is used to support a restraint tray equipped with a rechargeable battery, and guide columns slidably connected to the first support frame are vertically arranged on opposite sides of the first support frame; Two fixing plates are arranged opposite to each other at the top of the guide column, a second support frame opposite to the first support frame is arranged between the two fixing plates, a power module is arranged on the second support frame, and a plurality of electrical connectors extending toward the first support frame are arranged on the power module, and the power module is used to provide charging power or discharging load for the battery in the restraint tray; The first support frame can slide up and down along the guide column under the action of the lifting drive, so that the electrode end of the rechargeable battery in the restraint tray abuts against or separates from the electrical connector; A heat sink is provided on the power module, and the heat sink includes a heat sink forming a side wall, and the heat sink includes a plurality of fins and a heat exchange tube passing through the fins, and the heat exchange tube is provided with a liquid inlet and a liquid outlet. The heat sink is also provided with a first pipe connected to the liquid inlet and a second pipe connected to the liquid outlet, the first pipe is used to transport low-temperature liquid refrigerant into the heat exchange tube, and the second pipe is used to recover the high-temperature refrigerant flowing out of the heat exchange tube.

2. The rechargeable battery charging and discharging module based on liquid cooling according to claim 1 is characterized in that: The heat dissipation box comprises a top plate and an end plate. Two adjacent sides of the heat dissipation plate are respectively in contact with the top plate and the end plate. An accommodation space for accommodating the power module is formed between the two opposite heat dissipation plates.

3. The rechargeable battery charging and discharging module based on liquid cooling according to claim 1 is characterized in that: The liquid inlet and the liquid outlet are connected to the first pipeline and the second pipeline respectively through telescopic bellows.

4. The rechargeable battery charging and discharging module based on liquid cooling according to claim 1 is characterized in that: The power module comprises a chassis and a cooling fan arranged on the chassis, and an air outlet of the cooling fan faces the cooling plate.

5. The rechargeable battery charging and discharging module based on liquid cooling according to claim 1 is characterized in that: A first slide rail is respectively arranged on the inner side of the two fixing plates, and the second supporting frame is slidably connected to the first slide rail.

6. The rechargeable battery charging and discharging module based on liquid cooling according to claim 1 is characterized in that: The first support frame includes an outer frame and support rods spaced apart in the outer frame, wherein the outer frame is slidably connected to the guide columns; a mounting frame is arranged in the gap between the support rods, and a temperature sensing probe extending upward is arranged on the mounting frame, wherein the temperature sensing probe can be extended into the restraint tray and abut against the rechargeable battery therein.

7. The rechargeable battery charging and discharging module based on liquid cooling according to claim 6 is characterized in that: It also includes a plurality of support platforms which are vertically arranged and located inside the outer frame. When the first support frame slides up and down along the guide column, the support platforms can pass through the gaps between the support rods. The support platforms are used to cache the restraint tray.

8. The rechargeable battery charging and discharging module based on liquid cooling according to claim 6 is characterized in that: A second slide rail extending laterally is also provided at the bottom of the support rod, and the mounting frame is slidably connected to the second slide rail. A telescopic drive connected to the mounting frame is also provided on the second slide rail, and the telescopic drive is used to drive the mounting frame to slide along the second slide rail to adjust the position of the temperature sensing probe in the horizontal plane.

9. The rechargeable battery charging and discharging module based on liquid cooling according to claim 1, characterized in that: A support plate is also provided on the second support frame, and a plurality of limit grooves are arranged at intervals on the support plate; the electrical connector includes a fixing sleeve, a connecting head and a first elastic member, and the connecting head is inserted into the fixing sleeve and can slide up and down relative to the fixing sleeve; the connecting head includes a first connecting end for connecting to the power module and a second connecting end for abutting against the electrode end of the rechargeable battery, one end of the first elastic member abuts against the second connecting end, and the other end of the first elastic member abuts against the fixing sleeve, and the fixing sleeve is clamped with the limit groove; the upper end of the connecting head is electrically connected to the power module through a flexible member.

10. The rechargeable battery charging and discharging module based on liquid cooling according to claim 9, characterized in that: The electrical connector further includes a second elastic member, one end of the second elastic member abuts against the fixing sleeve, and the other end of the second elastic member abuts against the first connecting end.

11. A rechargeable battery charging and discharging device, characterized in that: It comprises a closed frame, in which the rechargeable battery charging and discharging module according to any one of claims 1 to 10 is arranged.

12. The rechargeable battery charging and discharging device according to claim 11, characterized in that: The internal space of the frame includes a first part, a second part and a third part located between the first part and the second part, at least one rechargeable battery charging and discharging module is respectively arranged in the first part and the second part, the third part is provided with a liquid inlet main pipe and a liquid outlet main pipe, and the first pipe and the second pipe located in the first part and the second part are respectively connected to the liquid inlet main pipe and the liquid outlet main pipe.

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