Lithium ion battery integrated thermal management system

Abstract

The invention discloses a lithium ion battery integrated thermal management system which comprises a battery integration box, a battery placement cavity is formed in the battery integration box, a thermal insulation plate is arranged in the battery placement cavity and divides the interior of the battery placement cavity into two cavities, a lithium ion battery is placed in each cavity, and a lithium ion battery is arranged in each cavity. A temperature sensor is arranged above the inner side wall of each cavity, a clamping groove is formed in the top of the battery containing cavity, a cover plate is clamped in the clamping groove, refrigeration cavities are formed in the two sides of the battery containing cavity correspondingly, refrigeration pieces are arranged on the side walls of the sides, close to the battery containing cavity, of the refrigeration cavities, and flow guide plates are arranged at the bottom ends of the interiors of the refrigeration cavities; liquid inlet pipelines are arranged on the two sides of the upper portion of the battery integration box respectively, first control valves are arranged on the liquid inlet pipelines, liquid outlet pipelines are arranged on the two sides of the lower portion of the battery integration box respectively, and second control valves are arranged on the liquid outlet pipelines. According to the invention, centralized management and heat dissipation of the battery can be facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of battery integrated thermal management, in particular to a lithium-ion battery integrated thermal management system. Background Art

[0002] The safety of power battery packs has a vital impact on new energy vehicles, among which the control of thermal runaway of power battery packs has become a major technical point for new energy vehicles. At present, the thermal runaway alarm of the power battery system of domestic new energy vehicles is issued through transportation tools, such as: displaying the temperature information of the single cells of the power battery pack and the thermal runaway alarm information of the power battery system on the instrument panel in the cockpit. However, the above-mentioned thermal runaway alarm method makes the power battery pack highly dependent on the whole vehicle, and when the vehicle is powered off, the thermal runaway alarm cannot continue.

[0003] In response to the above problems, a temperature monitoring system for a power battery pack and a vehicle are proposed, such as the patent number 202222030163.7. The temperature monitoring system of the power battery pack includes a voltage conversion module and a temperature monitoring module. The voltage conversion module is used to be electrically connected to the power battery pack of the vehicle and the battery management system of the vehicle respectively. The voltage conversion module is also electrically connected to the temperature monitoring module. The temperature monitoring module is arranged in the power battery pack to obtain the current temperature of the power battery pack and generate a battery temperature signal according to the current temperature of the power battery pack. The battery management system is electrically connected to the temperature monitoring module.

[0004] Although the above patent uses the voltage conversion module to perform voltage conversion when the key wake-up signal cannot be obtained, that is, when the vehicle is in a power-off state, so that the power battery pack supplies power to the battery management system, and then the battery management system can determine whether the vehicle is in a thermal runaway state based on the battery temperature signal, thereby realizing temperature monitoring of the power battery pack when the vehicle is powered off, it lacks the function of dissipating heat for the battery pack. Excessive temperature of the battery pack is not conducive to the normal operation of the battery pack and reduces the service life of the battery.

[0005] Therefore, in order to solve the above problems, a lithium-ion battery integrated thermal management system is proposed. Summary of the invention

[0006] The object of the present invention is to provide a lithium-ion battery integrated thermal management system, comprising a battery integrated box, a battery placement cavity is provided inside the battery integrated box, a heat insulation board is arranged inside the battery placement cavity, the heat insulation board divides the battery placement cavity into two chambers, a lithium-ion battery is placed in each chamber, a temperature sensor is arranged above the inner side wall of each chamber, a card slot is provided at the top of the battery placement cavity, a cover plate is clamped inside the card slot, refrigeration chambers are respectively arranged on both sides of the battery placement cavity, a refrigeration sheet is arranged on the side wall of the refrigeration cavity close to the battery placement cavity, a guide plate is arranged at the bottom end of the refrigeration cavity, liquid inlet pipes are respectively arranged on both sides of the upper side of the battery integrated box, a control valve 1 is arranged on the liquid inlet pipe, and liquid outlet pipes are respectively arranged on both sides of the lower side of the battery integrated box, and a control valve 2 is arranged on the liquid outlet pipe.

[0007] Preferably, the refrigeration chamber is a sealed chamber.

[0008] Preferably, mounting blocks are respectively provided on both sides above the cover plate, and a rotating handle is rotatably provided between the two mounting blocks.

[0009] Preferably, the side of the cooling plate located inside the battery placement cavity is the cold end, and the side of the cooling plate located inside the refrigeration cavity is the hot end.

[0010] Preferably, a transparent observation window is provided on the outer front surface of the refrigeration chamber.

[0011] Preferably, a controller is provided on the external front surface of the battery integrated box, and the controller is electrically connected to the temperature sensor.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention arranges a heat insulation plate inside the battery placement cavity to separate the heat of two chambers inside the battery placement cavity, and arranges refrigeration chambers on both sides of the battery placement cavity respectively. The two refrigeration plates respectively absorb the heat emitted from the two chambers, transfer the heat to the refrigeration chamber for heat dissipation, and improve the heat dissipation efficiency.

[0014] The present invention provides a liquid inlet pipe and a liquid outlet pipe on one side of the refrigeration chamber, respectively, in cooperation with a temperature sensor provided inside the battery placement chamber. If the temperature sensor detects that the temperature inside the battery placement chamber is too high, the control valve 2 is controlled to open to discharge the condensate inside the refrigeration chamber. After the discharge, the control valve 1 is opened to send new condensate into the refrigeration chamber, thereby facilitating the replacement of the condensate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0016] Figure 2It is a schematic diagram of the internal structure of the present invention.

[0017] The reference numerals and names in the figures are as follows:

[0018] 1. Battery integrated box; 101. Battery placement cavity; 102. Refrigeration cavity; 103. Card slot; 2. Liquid inlet pipe; 21. Control valve one; 3. Liquid outlet pipe; 31. Control valve two; 4. Transparent observation window; 5. Mounting block; 6. Turning handle; 7. Guide plate; 8. Refrigeration plate; 81. Hot end; 82. Cold end; 9. Heat insulation board; 10. Lithium-ion battery; 11. Cover plate; 12. Temperature sensor; 13. Controller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] As attached Figure 1 , 2 The present invention provides a lithium-ion battery integrated thermal management system, including a battery integrated box 1, a battery placement cavity 101 is provided inside the battery integrated box 1, a heat insulation board 9 is arranged inside the battery placement cavity 101, the heat insulation board 9 divides the battery placement cavity 101 into two chambers, a lithium-ion battery 10 is placed in each chamber, a temperature sensor 12 is arranged above the inner side wall of each chamber, a card slot 103 is provided at the top of the battery placement cavity 101, a cover plate 11 is clamped inside the card slot 103, refrigeration cavities 102 are respectively arranged on both sides of the battery placement cavity 101, a refrigeration sheet 8 is arranged on the side wall of the refrigeration cavity 102 close to the battery placement cavity 101, a guide plate 7 is arranged at the bottom end of the refrigeration cavity 102, liquid inlet pipes 2 are respectively arranged on both sides of the upper side of the battery integrated box 1, and a control valve 1 21 is arranged on the liquid inlet pipe 2, and liquid outlet pipes 3 are respectively arranged on both sides of the lower side of the battery integrated box 1, and a control valve 2 31 is arranged on the liquid outlet pipe 3.

[0021] Specifically, the refrigeration chamber 102 is a sealed chamber.

[0022] Specifically, mounting blocks 5 are respectively disposed on both sides above the cover plate 11 , and a rotating handle 6 is rotatably disposed between the two mounting blocks 5 .

[0023] Specifically, the side of the cooling sheet 8 located inside the battery placement cavity 101 is the cold end 82 , and the side of the cooling sheet 8 located inside the refrigeration cavity 102 is the hot end 81 .

[0024] Specifically, a transparent observation window 4 is provided on the outer front surface of the refrigeration cavity 102 , through which the liquid level of the refrigeration cavity 102 can be monitored in real time to prevent the liquid level inside the refrigeration cavity 102 from being too high or too low.

[0025] Specifically, a controller 13 is disposed on the outer front surface of the battery integrated box 1 , and the controller 13 is electrically connected to the temperature sensor 12 .

[0026] Working principle: When in use, hold the rotating handle 6, take the cover plate 11 out of the card slot 103, place the lithium-ion battery 10 in the battery placement chamber 101, cover the cover plate 11, and the cooling plates 8 arranged on both sides of the battery placement chamber 101 absorb the heat in the two chambers respectively, and transfer the heat to the cooling chamber 102. The condensate in the cooling chamber 102 dissipates the heat to the hot end 81, and the temperature inside the battery placement chamber 101 is detected in real time by the temperature sensor 12. If the temperature sensor 12 detects that the temperature inside the battery placement chamber 101 is too high, the control valve 2 31 is controlled to open, and the condensate inside the cooling chamber 102 is discharged. After the discharge, the control valve 1 21 is opened to send new condensate into the cooling chamber 102, so as to facilitate the replacement of the condensate.

[0027] Utilizing the technical solution described in the present invention, or those skilled in the art designing a similar technical solution inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A lithium-ion battery integrated thermal management system, comprising a battery integration box (1), characterized in that: The battery integrated box (1) has a battery placement chamber (101) formed therein, a heat insulation board (9) being provided inside the battery placement chamber (101), the heat insulation board (9) dividing the battery placement chamber (101) into two chambers, each chamber having a lithium-ion battery (10) placed therein, a temperature sensor (12) being provided above the inner side wall of each chamber, a card slot (103) being formed at the top of the battery placement chamber (101), a cover plate (11) being carded inside the card slot (103), and the battery placement chamber (101) 01) are provided with refrigeration chambers (102) on both sides, a refrigeration plate (8) is provided on the side wall of the refrigeration chamber (102) close to the battery placement chamber (101), a guide plate (7) is provided at the bottom end of the refrigeration chamber (102), liquid inlet pipes (2) are provided on both sides above the battery integrated box (1), a control valve 1 (21) is provided on the liquid inlet pipes (2), and liquid outlet pipes (3) are provided on both sides below the battery integrated box (1), and a control valve 2 (31) is provided on the liquid outlet pipes (3).

2. A lithium-ion battery integrated thermal management system according to claim 1, characterized in that: The refrigeration chamber (102) is a sealed chamber.

3. The lithium-ion battery integrated thermal management system according to claim 1, characterized in that: Mounting blocks (5) are respectively arranged on both sides above the cover plate (11), and a rotating handle (6) is rotatably arranged between the two mounting blocks (5).

4. The lithium-ion battery integrated thermal management system according to claim 1, characterized in that: The side of the cooling plate (8) located inside the battery placement cavity (101) is the cold end (82), and the side of the cooling plate (8) located inside the cooling cavity (102) is the hot end (81).

5. The lithium-ion battery integrated thermal management system according to claim 1, characterized in that: A transparent observation window (4) is provided on the external front surface of the refrigeration chamber (102).

6. The lithium-ion battery integrated thermal management system according to claim 1, characterized in that: A controller (13) is provided on the external front surface of the battery integrated box (1), and the controller (13) is electrically connected to the temperature sensor (12).

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