A battery thermal management system

Abstract

The application discloses a battery thermal management system, which comprises a battery mounting base assembly, two groups of battery cooling plate assemblies are arranged on the battery mounting base assembly to form a structure for synchronously clamping, fixing and cooling a battery module, and two groups of battery heat preservation plate assemblies are arranged on the battery mounting base assembly to form a structure for synchronously acting and heat preserving the battery module; when the temperature of the battery module is not high, the current in the induction coil is small, the two groups of battery heat preservation plate assemblies are close to the battery module, and a heat preservation structure is formed outside the battery module, so that the use safety of the battery module in a low-temperature environment is ensured; when the temperature of the battery module is increased, the resistance value of the thermistor is reduced, the current in the induction coil is increased, and the two groups of battery heat preservation plate assemblies are far away from the battery module, so that a heat dissipation gap is formed between the battery heat preservation plate assemblies and the battery module, and temperature accumulation is avoided.

Description

Technical Field

[0001] This invention belongs to the field of battery thermal management technology, and specifically relates to a battery thermal management system. Background Technology

[0002] Batteries are one of the most important components of new energy vehicles. However, battery thermal runaway has caused many serious accidents such as fires and explosions. The main reason is that the thermal runaway of a single battery cell spreads heat to the surrounding batteries, causing the entire battery pack to thermally runaway, which increases the danger.

[0003] Existing technologies have the following problems: existing battery thermal management systems emphasize heat dissipation protection of the battery. This heat dissipation protection can lead to overprotection, which may result in energy waste and high operating costs in the long run. At the same time, if the battery is used in a cold environment without corresponding protection, it may also lead to insufficient battery discharge or reduced efficiency. Therefore, there is an urgent need for a battery thermal management system to solve these problems. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a battery thermal management system that is convenient for battery thermal management.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a battery thermal management system, including a battery mounting base assembly, wherein battery insulation plate assemblies are provided on both sides of the battery mounting base assembly, and battery cooling plate assemblies are provided at both ends of the battery mounting base assembly; the two sets of battery cooling plate assemblies form a structure on the battery mounting base assembly for synchronously clamping, fixing and cooling the battery module; and the two sets of battery insulation plate assemblies form a structure on the battery mounting base assembly for synchronous operation and for heat preservation of the battery module.

[0006] The battery mounting base assembly includes a battery mounting base frame. The battery mounting base frame has guide horizontal seat grooves and mounting side base plates on both sides, and end horizontal grooves at both ends of the positioning gear. The battery mounting base frame contains a rotating shaft and a seat tube. The rotating shaft is equipped with a shaft gear and a shaft platform guide rail slide. The seat tube contains a side guide groove, an induction coil, and an iron ring platform. A guide rail slide ring platform is fitted outside the shaft platform guide rail slide. The inner and outer walls of the guide rail slide ring platform are respectively equipped with a guide convex slide head and a side guide slider. A magnetic ring platform is located at the bottom of the side guide slider. A return spring is located on the iron ring platform. A spiral guide rail groove is provided on the shaft platform guide rail slide. A positioning shaft is located on one side of the battery mounting base frame. A positioning gear and a toggle handle are respectively located at both ends of the positioning shaft. A positioning screw is located at one end of the toggle handle.

[0007] Preferably, the battery cooling plate assembly includes a battery cooling plate, a cooling water pipe and a thermistor are provided on the inner side of the battery cooling plate, and an outlet pipe and an inlet pipe are provided on the outer side of the battery cooling plate. A toothed arm plate is provided at the bottom of the battery cooling plate, and an arm plate side slider is provided on one side of the toothed arm plate.

[0008] The battery insulation plate assembly includes a battery insulation plate, an air outlet slit and a battery insulation pad are provided on the inner side of the battery insulation plate, and an air inlet pipe is provided on the outer side of the battery insulation plate. A toothed boom is provided at the bottom of the battery insulation plate, and a boom transverse groove is provided on the boom transverse groove. A transverse groove toothed plate is provided inside the boom transverse groove.

[0009] Preferably, the guide rail slide ring is sleeved outside the shaft platform guide rail slide rod and slides up and down outside the shaft platform guide rail slide rod, the side guide slider slides up and down in the side guide groove, and the guide convex slide head is inserted in the spiral guide rail groove.

[0010] Preferably, the top and bottom of the return spring abut against the magnetic ring platform and the iron ring platform respectively, and the guide rail slide ring platform slides towards the top of the shaft platform guide rail slide rod by the push of the return spring.

[0011] Preferably, the toothed arm on the battery insulation plate assembly slides back and forth on the battery mounting base frame via the guide cross seat groove. The transverse groove toothed plate in the arm's transverse groove meshes with the shaft gear. The teeth at both ends of the shaft gear mesh with the two transverse groove toothed plates on the two sets of battery insulation plate assemblies, respectively. Through the meshing between the shaft gear and the two sets of transverse groove toothed plates, the two sets of battery insulation plate assemblies form a synchronously operating battery module insulation structure on both sides of the battery mounting base assembly.

[0012] Preferably, the upper and lower ends of the inner side of the battery mounting base frame near the positioning shaft are provided with guide grooves. The arm plate side slider slides in the guide grooves. The toothed arm plate meshes with the positioning toothed wheel. The top and bottom teeth of the positioning toothed wheel mesh with the toothed arm plates on the two sets of battery cooling plate assemblies. Through the meshing of the positioning toothed wheel with the two toothed arm plates, the two sets of battery cooling plate assemblies form a synchronously operating battery module cooling and limiting fixing structure on the battery mounting base assembly.

[0013] Preferably, a thermistor is provided on the inner side of the battery cooling plate and a thermistor is also provided on the inner side of the battery insulation plate. The thermistor is a negative temperature coefficient thermistor and the thermistor and the induction coil belong to the same circuit.

[0014] Preferably, the two sets of battery insulation plate assemblies form a contact-type battery module insulation structure on both sides of the battery mounting base assembly, and the two sets of battery cooling plate assemblies form a contact-type battery module cooling structure at both ends of the battery mounting base assembly. The water outlet pipe and water inlet pipe on the battery cooling plate assembly are connected to an external coolant circulation device, and the air inlet pipe on the battery insulation plate assembly is connected to an external cold air supply device. The thermistor belongs to the same circuit as the external coolant circulation device and the external cold air supply device.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention is used, two sets of battery insulation plate assemblies form a contact-type battery module insulation structure on both sides of the battery mounting base assembly. The toothed arm on the battery insulation plate assembly slides back and forth on the battery mounting base frame through the guide cross seat slide groove. The transverse groove toothed plate in the arm's transverse groove meshes with the shaft gear. The teeth at both ends of the shaft gear mesh with the two transverse groove toothed plates on the two sets of battery insulation plate assemblies, respectively. Through the meshing between the shaft gear and the two sets of transverse groove toothed plates, the two sets of battery insulation plate assemblies form a synchronously operating battery module insulation structure on both sides of the battery mounting base assembly. At the same time, the side guide slider guides the side. The guide slides up and down within the groove, with the guide convex slide head inserted into the spiral guide rail groove. Pushed by the return spring, the guide rail slide ring slides towards the top of the shaft guide rail slide rod. In its natural state, the thermistor contacts and is close to the battery module. When the battery module temperature is low, the current in the induction coil is small. At this time, the return spring pushes the guide rail slide ring to the top. Simultaneously, the shaft gear on the rotating shaft meshes with the transverse slotted toothed moving plate, causing the toothed arm to retract and slide inward. At this point, the two sets of battery insulation plate assemblies move closer to the battery module, forming an insulation structure outside the battery module, protecting the battery module's safety in low-temperature environments. When the battery module temperature rises, the thermistor resistance changes... When the current in the induction coil increases, the aforementioned action reverses. At this point, the two sets of battery insulation plate assemblies move further away from the battery module, creating a heat dissipation gap between them to prevent heat buildup and ensure timely heat dissipation. Simultaneously, the battery insulation plate assemblies have exhaust slits, and their air inlets are connected to an external cooling system. When the current in the induction coil increases to a certain value, the external cooling system activates, forcibly cooling the battery module through the exhaust slits. At this time, the cooling water pipes on the battery cooling plate assembly can also operate, further assisting in cooling the battery module. The toothed arm plate meshes with the positioning toothed wheel. The top and bottom teeth of the positioning toothed wheel mesh with the toothed arm plates on the two sets of battery cooling plate assemblies. Through the meshing of the positioning toothed wheel with the two toothed arm plates, the two sets of battery cooling plate assemblies form a synchronously operating battery module cooling and limiting fixation structure on the battery mounting base assembly. This structure enables the battery module to be quickly installed and removed from the battery mounting base assembly. The battery mounting base assembly, battery cooling plate assembly, and battery insulation plate assembly form a complete system that facilitates the installation and removal of battery modules and provides auxiliary insulation or accelerated heat dissipation. Through the cooperation of the above structures, the reliability and stability of the battery module during installation and use can be guaranteed. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a perspective view of the battery mounting base assembly of the present invention;

[0019] Figure 4 This is an exploded view of the battery mounting base assembly of the present invention;

[0020] Figure 5 This is a perspective view of the battery cooling plate assembly of the present invention;

[0021] Figure 6 This is a perspective view of the battery insulation plate assembly of the present invention;

[0022] In the diagram: 100. Battery mounting base assembly; 101. Guide slide head; 102. Side guide slider; 103. Battery mounting base bracket; 104. Side guide groove; 105. Seat tube; 106. Mounting side base plate; 107. Induction coil; 108. Return spring; 109. Iron ring platform; 110. Shaft platform guide rail slide rod; 111. Spiral guide rail groove; 112. Guide rail slide ring platform; 113. Positioning gear wheel; 114. Positioning shaft; 115. Actuating handle; 116. Positioning screw; 117. Magnetic ring platform; 118. 119. Guide crossbar slide groove; 120. Rotating shaft; 121. Shaft gear; 200. End cross groove; 201. Battery cooling plate assembly; 202. Battery cooling plate; 203. Geared arm plate; 204. Arm plate side slider; 205. Cooling water pipe; 206. Thermistor; 207. Water outlet pipe; 208. Water inlet pipe; 300. Battery insulation plate assembly; 301. Battery insulation plate; 302. Battery insulation pad; 303. Air inlet pipe; 304. Air outlet slit; 305. Geared arm; 306. Arm cross groove; 307. Cross groove geared plate. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-6The present invention provides the following technical solution: a battery thermal management system, including a battery mounting base assembly 100, battery insulation plate assemblies 300 are provided on both sides of the battery mounting base assembly 100, and battery cooling plate assemblies 200 are provided at both ends of the battery mounting base assembly 100. The two sets of battery cooling plate assemblies 200 form a structure on the battery mounting base assembly 100 for synchronously clamping, fixing and cooling the battery module, and the two sets of battery insulation plate assemblies 300 form a structure on the battery mounting base assembly 100 for synchronous operation and for heat preservation of the battery module.

[0025] The battery mounting base assembly 100 includes a battery mounting base frame 103. The battery mounting base frame 103 has guide cross seat grooves 118 and mounting side base plates 106 on both sides. The positioning gear 113 has end cross grooves 121 at both ends. The battery mounting base frame 103 has a rotating shaft 119 and a seat tube 105 inside. The rotating shaft 119 has a shaft gear 120 and a shaft platform guide rail slide rod 110. The seat tube 105 has a side guide groove 104, an induction coil 107, and an iron ring platform 109 inside. A guide rail slide ring platform 112 is sleeved on the outside of the shaft platform guide rail slide rod 110. The inner and outer walls of the guide rail slide ring platform 112 are respectively provided with guide protrusions 101 and side guides. The side guide slider 102 has a magnetic ring platform 117 at its bottom and a return spring 108 on the iron ring platform 109. The shaft guide rail slide rod 110 has a spiral guide rail groove 111. The battery mounting base frame 103 has a positioning shaft rod 114 on one side. The positioning shaft rod 114 has a positioning gear 113 and a toggle handle 115 at both ends. The toggle handle 115 has a positioning screw 116 at one end. The guide rail slide ring platform 112 is sleeved on the outside of the shaft guide rail slide rod 110 and slides up and down on the outside of the shaft guide rail slide rod 110. The side guide slider 102 slides up and down in the side guide rail groove 104. The guide convex slide head 101 is inserted into the spiral guide rail. Inside the slide groove 111, the top and bottom of the return spring 108 abut against the magnetic ring platform 117 and the iron ring platform 109, respectively. Through the pushing action of the return spring 108, the guide rail slide ring platform 112 slides towards the top of the shaft platform guide rail slide rod 110. The geared arm 305 on the battery insulation plate assembly 300 slides back and forth on the battery mounting base frame 103 via the guide cross seat slide groove 118. The transverse groove geared plate 307 in the arm transverse groove 306 meshes with the shaft gear 120. The teeth at both ends of the shaft gear 120 mesh with the two transverse groove geared plates 307 on the two sets of battery insulation plate assemblies 300, respectively. Through the meshing between the shaft gear 120 and the two sets of transverse groove geared plates 307, the two... The battery insulation plate assembly 300 forms a synchronously operating battery module insulation structure on both sides of the battery mounting base assembly 100. The upper and lower ends of the inner side of the battery mounting base frame 103 near the positioning shaft rod 114 are provided with guide grooves. The arm plate side slider 203 slides in the guide grooves. The toothed arm plate 202 meshes with the positioning toothed wheel 113. The top and bottom teeth of the positioning toothed wheel 113 mesh with the toothed arm plates 202 on the two battery cooling plate assemblies 200. Through the meshing of the positioning toothed wheel 113 with the two toothed arm plates 202, the two battery cooling plate assemblies 200 form a synchronously operating battery module cooling and limiting and fixing structure on the battery mounting base assembly 100.

[0026] The battery cooling plate assembly 200 includes a battery cooling plate 201. A cooling water pipe 204 and a thermistor 205 are provided on the inner side of the battery cooling plate 201, and an outlet pipe 206 and an inlet pipe 207 are provided on the outer side of the battery cooling plate 201. A geared arm plate 202 is provided at the bottom of the battery cooling plate 201, and an arm plate side slider 203 is provided on one side of the geared arm plate 202. A thermistor 205 is provided on the inner side of the battery cooling plate 201, and a thermistor is also provided on the inner side of the battery insulation plate 301. The thermistor 205 is a negative temperature coefficient thermistor, and the thermistor 205 and the induction coil 107 belong to the same circuit.

[0027] The battery insulation plate assembly 300 includes a battery insulation plate 301. An air outlet slit 304 and a battery insulation pad 302 are provided on the inner side of the battery insulation plate 301, and an air inlet pipe 303 is provided on the outer side of the battery insulation plate 301. A toothed arm 305 is provided at the bottom of the battery insulation plate 301, and a cross groove 306 is provided on the toothed arm 305. A cross groove toothed plate 307 is provided inside the cross groove 306. Two sets of battery insulation plate assemblies 300 are located on both sides of the battery mounting base assembly 100. The battery module insulation structure is in contact with the battery mounting base assembly 100. Two sets of battery cooling plate assemblies 200 form a contact-type battery module cooling structure at both ends of the battery mounting base assembly 100. The water outlet pipe 206 and water inlet pipe 207 on the battery cooling plate assembly 200 are connected to the external coolant circulation device. The air inlet pipe 303 on the battery insulation plate assembly 300 is connected to the external cold air supply device. The thermistor 205 is on the same circuit as the external coolant circulation device and the external cold air supply device.

[0028] Working principle and usage of the invention: In use, two sets of battery insulation plate assemblies 300 form a contact-type battery module insulation structure on both sides of the battery mounting base assembly 100. The toothed arm 305 on the battery insulation plate assembly 300 slides back and forth on the battery mounting base frame 103 via the guide cross seat slide groove 118. The transverse groove toothed plate 307 in the arm transverse groove 306 meshes with the shaft gear 120. The teeth at both ends of the shaft gear 120 mesh with the two transverse groove toothed plates 307 on the two sets of battery insulation plate assemblies 300 respectively. Through the meshing between the shaft gear 120 and the two sets of transverse groove toothed plates 307, the two sets of battery insulation plate assemblies 300 form a contact-type battery module insulation structure on both sides of the battery mounting base assembly 100. The battery module insulation structure operates in steps. Simultaneously, the side guide slider 102 slides up and down within the side guide groove 104. The guide convex slider 101 is inserted into the spiral guide rail groove 111. Through the push of the return spring 108, the guide rail slide ring 112 slides towards the top of the shaft guide rail slide rod 110. In its natural state, the thermistor 205 contacts and is close to the battery module. When the battery module temperature is not high, the current in the induction coil 107 is small. At this time, the return spring 108 pushes the guide rail slide ring 112 to the top. Then, the shaft gear 120 on the rotating shaft 119 meshes with the transverse groove gear plate 307, causing the gear arm 305 to retract and slide inward. At this time, the two sets of battery insulation plate assemblies 300 move towards the battery... The modules are brought together to form an insulation structure around the battery module, protecting its safety in low-temperature environments. When the battery module temperature rises, the resistance of the thermistor 205 decreases, and the current in the induction coil 107 increases. At this point, the above actions reverse, and the two sets of battery insulation plate assemblies 300 move further away from the battery module, creating a heat dissipation gap between them to prevent heat buildup and ensure timely heat dissipation. Simultaneously, the battery insulation plate assembly 300 has an air outlet slit 304, and its air inlet duct 303 connects to an external cold air supply device. When the current in the induction coil 107 increases and reaches a certain value, the external cold air supply... The air supply device operates, and the battery module is forced to cool down through the air outlet slit 304. At this time, the cooling water pipe 204 on the battery cooling plate assembly 200 can operate to assist in further cooling of the battery module. Simultaneously, the geared arm plate 202 meshes with the positioning geared wheel 113. The top and bottom teeth of the positioning geared wheel 113 mesh with the geared arm plates 202 on the two sets of battery cooling plate assemblies 200. Through the meshing of the positioning geared wheel 113 with the two geared arm plates 202, the two sets of battery cooling plate assemblies 200 form a synchronously operating battery module cooling and limiting fixing structure on the battery mounting base assembly 100. Through this structure, the battery module can be quickly installed and removed from the battery mounting base assembly 100.The battery mounting base assembly 100, battery cooling plate assembly 200, and battery insulation plate assembly 300 form a complete system that facilitates battery module assembly and disassembly, provides auxiliary insulation, or accelerates heat dissipation. Through the coordination of these structures, the reliability and stability of the battery module during installation and use can be guaranteed.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery thermal management system, comprising a battery mounting base assembly (100), characterized in that: The battery mounting base assembly (100) is provided with battery insulation plate assemblies (300) on both sides, and battery cooling plate assemblies (200) are provided at both ends of the battery mounting base assembly (100). The two sets of battery cooling plate assemblies (200) form a structure on the battery mounting base assembly (100) for synchronously clamping, fixing and cooling the battery module. The two sets of battery insulation plate assemblies (300) form a structure on the battery mounting base assembly (100) for synchronous operation and for heat preservation of the battery module. The battery mounting base assembly (100) includes a battery mounting base frame (103). The battery mounting base frame (103) has guide cross seat grooves (118) and mounting side base plates (106) on both sides. A positioning shaft (114) is provided on one side of the battery mounting base frame (103). Positioning gears (113) and actuating handles (115) are respectively provided at both ends of the positioning shaft (114). End cross grooves (121) are provided at both ends of the positioning gears (113). A rotating shaft (119) and a seat tube (105) are provided inside the battery mounting base frame (103). A shaft gear (120) and a shaft guide rail are provided on the rotating shaft (119). The rod (110) has a side guide groove (104), an induction coil (107) and an iron ring platform (109) inside the seat tube (105). The shaft platform guide rail slide rod (110) is fitted with a guide rail slide ring platform (112). The inner and outer walls of the guide rail slide ring platform (112) are respectively provided with a guide convex slide head (101) and a side guide slider (102). The bottom of the side guide slider (102) is provided with a magnetic ring platform (117). The iron ring platform (109) is provided with a return spring (108). The shaft platform guide rail slide rod (110) is provided with a spiral guide rail groove (111). One end of the actuating handle (115) is provided with a positioning screw (116). The battery cooling plate assembly (200) includes a battery cooling plate (201), a cooling water pipe (204) and a thermistor (205) are provided on the inner side of the battery cooling plate (201), and an outlet pipe (206) and an inlet pipe (207) are provided on the outer side of the battery cooling plate (201). A toothed arm plate (202) is provided at the bottom of the battery cooling plate (201), and an arm plate side slider (203) is provided on one side of the toothed arm plate (202). The battery insulation plate assembly (300) includes a battery insulation plate (301), an air outlet slit (304) and a battery insulation pad (302) are provided on the inner side of the battery insulation plate (301), and an air inlet pipe (303) is provided on the outer side of the battery insulation plate (301). A toothed boom (305) is provided at the bottom of the battery insulation plate (301), a boom cross groove (306) is provided on the toothed boom (305), and a cross groove toothed plate (307) is provided inside the boom cross groove (306). The toothed arm (305) on the battery insulation plate assembly (300) slides back and forth on the battery mounting base frame (103) through the guide cross seat slide groove (118). The transverse groove toothed plate (307) in the arm transverse groove (306) meshes with the shaft gear (120). The teeth at both ends of the shaft gear (120) mesh with the two transverse groove toothed plates (307) on the two sets of battery insulation plate assemblies (300). Through the meshing between the shaft gear (120) and the two sets of transverse groove toothed plates (307), the two sets of battery insulation plate assemblies (300) form a synchronously operating battery module insulation structure on both sides of the battery mounting base assembly (100).

2. The battery thermal management system according to claim 1, characterized in that: The guide rail slide ring (112) is sleeved on the outside of the shaft platform guide rail slide (110) and slides up and down outside the shaft platform guide rail slide (110). The side guide slider (102) slides up and down in the side guide groove (104). The guide convex slide head (101) is inserted in the spiral guide rail groove (111).

3. The battery thermal management system according to claim 1, characterized in that: The top and bottom of the return spring (108) abut against the magnetic ring platform (117) and the iron ring platform (109) respectively. Through the push of the return spring (108), the guide rail slide ring platform (112) slides towards the top of the shaft platform guide rail slide rod (110).

4. The battery thermal management system according to claim 1, characterized in that: The battery mounting base frame (103) has guide grooves on the upper and lower ends of the inner side of the frame near the positioning shaft (114). The arm plate side slider (203) slides in the guide groove. The toothed arm plate (202) meshes with the positioning toothed wheel (113). The top and bottom teeth of the positioning toothed wheel (113) mesh with the toothed arm plates (202) on the two sets of battery cooling plate assemblies (200). Through the meshing of the positioning toothed wheel (113) with the two toothed arm plates (202), the two sets of battery cooling plate assemblies (200) form a synchronously operating battery module cooling and limiting fixing structure on the battery mounting base assembly (100).

5. A battery thermal management system according to claim 1, characterized in that: A thermistor (205) is provided on the inner side of the battery cooling plate (201), and a thermistor is also provided on the inner side of the battery insulation plate (301). The thermistor (205) is a negative temperature coefficient thermistor, and the thermistor (205) and the induction coil (107) belong to the same circuit.

6. A battery thermal management system according to claim 1, characterized in that: The two sets of battery insulation plate assemblies (300) form a contact-type battery module insulation structure on both sides of the battery mounting base assembly (100), and the two sets of battery cooling plate assemblies (200) form a contact-type battery module cooling structure at both ends of the battery mounting base assembly (100). The water outlet pipe (206) and water inlet pipe (207) on the battery cooling plate assembly (200) are connected to the external coolant circulation device. The air inlet pipe (303) on the battery insulation plate assembly (300) is connected to the external cold air supply device. The thermistor (205) is on the same circuit as the external coolant circulation device and the external cold air supply device.

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