Heat dissipation module of power battery pack

Abstract

The invention provides a power battery pack heat dissipation module, and relates to the technical field of power batteries, according to the power battery pack heat dissipation module, a heat dissipation assembly is installed in a shell, the heat dissipation assembly is in heat conduction fit with a battery assembly, and an auxiliary switching assembly is provided with an air cooling pipe and a liquid cooling pipe; and the auxiliary switching assembly is used for enabling one of the air cooling pipe and the liquid cooling pipe to be in fluid communication with the heat dissipation assembly, so that switching between an air cooling state and a liquid cooling state can be realized, and the energy consumption and the use loss of cooling liquid are reduced while the heat transfer efficiency is ensured. In addition, the cooling liquid can be automatically discharged into the shell through active control or when being impacted, and the battery assembly is wrapped by the cooling liquid, so that spontaneous combustion of the battery is avoided, and the safety of the power battery is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a heat dissipation module for a power battery pack. Background Art

[0002] Power batteries usually use air cooling or liquid cooling to ensure that the operating temperature is within an appropriate range. Among them, air cooling can meet general heat dissipation conditions, but it is difficult to achieve ideal heat dissipation effects when the weather is hot; liquid cooling has a higher heat dissipation efficiency, so it is more widely used. However, even if the power battery does not generate much heat, the coolant still needs to circulate, which not only increases the heat dissipation energy consumption, but also causes unnecessary use loss of the coolant. Summary of the invention

[0003] The object of the present invention is to provide a power battery pack heat dissipation module that can realize switching between air cooling state and liquid cooling state, thereby ensuring heat transfer efficiency while reducing energy consumption and coolant loss.

[0004] In a first aspect, the power battery pack heat dissipation module provided by the present invention comprises: a shell, a cover plate and a battery assembly, wherein the battery assembly is installed inside the shell, and the cover plate covers the shell; The power battery pack heat dissipation module also includes: a heat dissipation component and an auxiliary switching component; The heat dissipation component is installed in the housing, and the heat dissipation component and the battery component are thermally matched; The auxiliary switching component has an air cooling pipe and a liquid cooling pipe, and the auxiliary switching component is used to enable one of the air cooling pipe and the liquid cooling pipe to be fluidically connected to the heat dissipation component.

[0005] In combination with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the auxiliary switching assembly includes a working box; the working box is provided with a first guide groove, a guide groove and a first connecting groove and a second connecting groove; The first guide groove, the guide groove, the first connecting groove and the second connecting groove are arranged at intervals around the working chamber; The air cooling pipe is connected to the first guide groove, the liquid cooling pipe is connected to the guide groove, and the first connecting groove and the second connecting groove are respectively in fluid communication with the heat dissipation assembly; A matching rod is installed in the working chamber, the matching rod is transmission-connected to the rotating driving member, and the matching rod is provided with a radial flow channel; The rotary drive member drives the matching rod to rotate to achieve switching between an air cooling state and a liquid cooling state; In the air-cooling state, the first guide groove is connected to at least one of the first connecting groove and the second connecting groove through the radial flow channel, and the guide groove is blocked by the matching rod; In the liquid cooling state, the guide groove is connected to the first connecting groove and the second connecting groove through the radial flow channel, and the first guide groove is blocked by the matching rod.

[0006] In combination with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the working box is provided with a second guide groove and a third connecting groove, and the working chamber is connected with the second guide groove through the third connecting groove; The air-cooling state also includes a radiator air-cooling condition and an inner cavity air-cooling condition. Under the radiator air-cooling condition, at least one of the first connecting groove and the second connecting groove is connected to the first guide groove via the radial flow channel. Under the inner cavity air-cooling condition, the first guide groove is connected to the third connecting groove via the radial flow channel.

[0007] In combination with the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the power battery pack heat dissipation module further comprises: a mating component, the mating component being installed in the housing; The auxiliary switching component and the heat dissipation component are respectively in fluid communication with the matching component, and the matching component is provided with a discharge port which can be opened and closed and is used to communicate with the inner cavity of the shell.

[0008] In combination with the third possible implementation of the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein the matching component includes: a third flow guide pipe and a discharge control device, the auxiliary switching component and the heat dissipation component are respectively connected to the third flow guide pipe, the third flow guide pipe is provided with the discharge port, and the discharge control device is installed at the discharge port to control the opening and closing state of the discharge port.

[0009] In combination with the fourth possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the discharge control device includes: a trigger rod, a fixing rod, an electric push rod, a blocking block, a supporting block, a trigger block and a spring; The fixing rod is connected to the housing or the third flow guide tube, the electric push rod is installed on the fixing rod, and the electric push rod is transmission-connected with the trigger rod; The blocking block is located inside the third flow guide pipe and is used to block the discharge port; The support block is connected to the third flow guide pipe, and the trigger block passes through the support block and is connected to the blocking block; The trigger block abuts against the trigger rod, the spring is installed between the trigger block and the support block, and the spring has a tendency to drive the trigger block and keep the blocking block blocking the discharge port.

[0010] In combination with the fifth possible implementation manner of the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the trigger rod is provided with a cone groove, and the trigger block is inserted into the cone groove; The extension direction of the trigger rod forms an angle with the axial direction of the spring. When the electric push rod drives the trigger rod to move along its own extension direction or the trigger rod is hit, the conical groove will push the trigger block to make the block separate from the discharge port.

[0011] In combination with the third possible implementation of the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein the heat dissipation assembly includes: a first flow guide pipe and a plurality of second flow guide pipes; The first flow guide pipe is in fluid communication with the auxiliary switching assembly, and a plurality of the second flow guide pipes are arranged at intervals and are respectively in fluid communication with the first flow guide pipe; The first flow guide tube and the second flow guide tube are respectively attached to the battery assembly.

[0012] In combination with the seventh possible implementation manner of the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the first flow conduit is fluidically connected to the mating component via the second flow conduit.

[0013] In combination with the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein the battery assembly comprises: a bottom plate, a top plate, a heat dissipation cylinder, a plurality of battery cells and a plurality of heat conducting plates; The bottom plate is connected to the bottom of the heat dissipation tube, and a plurality of battery cells are arranged and installed in the heat dissipation tube; The heat conducting plate is installed between any two adjacent battery cores and between the battery core and the heat dissipation tube; The top plate covers the top of the heat dissipation tube.

[0014] The embodiments of the present invention bring about the following beneficial effects: a heat dissipation component is installed in the shell, and the heat dissipation component cooperates with the battery assembly in thermal conductivity, the auxiliary switching component has an air cooling pipe and a liquid cooling pipe, and the auxiliary switching component is used to enable one of the air cooling pipe and the liquid cooling pipe to be fluidically connected to the heat dissipation component, so as to realize switching between the air cooling state and the liquid cooling state, thereby ensuring the heat transfer efficiency and reducing the energy consumption and the loss of the coolant.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of a power battery pack heat dissipation module provided by an embodiment of the present invention; Figure 2 A schematic diagram of a power battery pack heat dissipation module provided by an embodiment of the present invention without a cover plate; Figure 3 A schematic diagram of a battery assembly of a power battery pack heat dissipation module provided by an embodiment of the present invention; Figure 4 An exploded view of a battery assembly of a power battery pack heat dissipation module provided by an embodiment of the present invention; Figure 5 A schematic diagram of a heat dissipation component and a matching component of a power battery pack heat dissipation module provided in an embodiment of the present invention; Figure 6 An exploded view of a heat dissipation component of a power battery pack heat dissipation module provided in an embodiment of the present invention; Figure 7 A schematic diagram of the matching components of the power battery pack heat dissipation module provided by an embodiment of the present invention; Figure 8 A partially enlarged schematic diagram of a matching component of a power battery pack heat dissipation module provided in an embodiment of the present invention; Fig. 9 for Figure 8 A magnified schematic diagram of position A in the middle; Fig.10 An exploded view of an auxiliary switching component of a power battery pack heat dissipation module provided by an embodiment of the present invention; Fig.11 A cross-sectional view of an auxiliary switching assembly of a power battery pack heat dissipation module provided in an embodiment of the present invention.

[0018] Icons: 1-shell; 2-cover; 3-battery assembly; 31-bottom plate; 32-top plate; 33-battery core; 34-heat conducting plate; 35-heat dissipation tube; 4-heat dissipation assembly; 41-first guide tube; 411-first heat dissipation plate; 42-second guide tube; 421-second heat dissipation plate; 43-connecting tube; 44-support frame; 5-matching assembly; 51-third guide tube; 511-third heat dissipation plate; 52-trigger rod; 53-fixing rod; 54-connecting rod; 55-support Cylinder; 56-electric push rod; 57-discharge port; 58-block; 59-support block; 591-trigger block; 592-spring; 6-auxiliary switching assembly; 61-working box; 611-first guide groove; 612-second guide groove; 613-air cooling pipe; 62-working chamber; 621-matching rod; 622-radial flow channel; 623-rotating drive member; 63-first connecting groove; 64-second connecting groove; 65-third connecting groove; 66-guide groove; 661-liquid cooling pipe. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the base units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 communication 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.

[0022] like Figure 1 and Figure 2 As shown, the power battery pack heat dissipation module provided by the embodiment of the present invention includes: a shell 1, a cover plate 2 and a battery assembly 3, the battery assembly 3 is installed inside the shell 1, and the cover plate 2 covers the shell 1; the power battery pack heat dissipation module also includes: a heat dissipation component 4 and an auxiliary switching component 6; the heat dissipation component 4 is installed in the shell 1, and the heat dissipation component 4 and the battery assembly 3 are thermally coordinated; the auxiliary switching component 6 has an air cooling pipe 613 and a liquid cooling pipe 661, and the auxiliary switching component 6 is used to make the air cooling pipe 613 and the liquid cooling pipe 661 selectively connected to the fluid of the heat dissipation component 4.

[0023] Multiple battery assemblies 3 capable of autonomous heat dissipation are arranged equidistantly inside the housing 1, and the heat dissipation assembly 4 surrounds the multiple battery assemblies 3. The auxiliary switching assembly 6 can realize the switching between the air cooling state and the liquid cooling state, while ensuring the heat transfer efficiency, reducing the energy consumption and the use loss of the cooling liquid.

[0024] like Figure 2 , Figure 5 , Fig.10 and Fig.11 As shown, in the embodiment of the present invention, the auxiliary switching assembly 6 includes a working box 61; the working box 61 is provided with a first guide groove 611, a guide groove 66, a first connecting groove 63 and a second connecting groove 64; the first guide groove 611, the guide groove 66 and the first connecting groove 63 and the second connecting groove 64 are arranged at intervals around the working chamber 62; the air cooling pipe 613 is connected to the first guide groove 611, the liquid cooling pipe 661 is connected to the guide groove 66, and the first connecting groove 63 and the second connecting groove 64 are respectively connected to the heat dissipation assembly 4 fluid; a matching rod 621 is installed in the working chamber 62, and the matching rod 621 is transmission-connected to the rotating driving member 623, and the matching rod 621 is provided with a radial flow channel 622; the rotating driving member 623 drives the matching rod 621 to rotate to realize the switching between the air-cooling state and the liquid-cooling state; in the air-cooling state, the first guide groove 611 is connected to at least one of the first connecting groove 63 and the second connecting groove 64 through the radial flow channel 622, and the guide groove 66 is blocked by the matching rod 621; in the liquid-cooling state, the guide groove 66 is connected to the first connecting groove 63 and the second connecting groove 64 through the radial flow channel 622, and the first guide groove 611 is blocked by the matching rod 621.

[0025] Furthermore, the working box 61 is provided with a second guide groove 612 and a third connecting groove 65, and the working chamber 62 is connected with the second guide groove 612 through the third connecting groove 65; the air-cooling state also includes a radiator air-cooling condition and an inner cavity air-cooling condition. Under the radiator air-cooling condition, at least one of the first connecting groove 63 and the second connecting groove 64 is connected with the first guide groove 611 through a radial flow channel 622, and under the inner cavity air-cooling condition, the first guide groove 611 is connected with the third connecting groove 65 through a radial flow channel 622.

[0026] Among them, the liquid cooling pipe 661 is connected to the liquid supply pump outlet. In the liquid cooling state, the coolant enters the first guide pipe 41, the second guide pipe 42 and the third guide pipe 51 from the first connecting groove 63 and the second connecting groove 64 to perform liquid cooling and heat dissipation operations on the battery assembly 3, and finally is discharged to the compressor position through the connecting pipe 43 for circulation. The rotary drive member 623 drives the matching rod 621 to rotate so that the radial flow channel 622 connects the first guide groove 611 to the first connecting groove 63 and the second connecting groove 64, and the air cooling pipe 613 transports cold air from the first guide pipe 41 to the second guide pipe 42 and the third guide pipe 51 to perform air cooling and heat dissipation on the battery assembly 3. The rotating driving member 623 drives the matching rod 621 to rotate until at least one of the two groups of matching rods 621 connects the first guide groove 611 with the third connecting groove 65, so that the cold air not only passes through the first guide tube 41, the second guide tube 42 and the third guide tube 51, but can also be discharged directly from the second guide groove 612 to the inside of the shell 1 for auxiliary heat dissipation. At this time, the air cooling power is relatively large.

[0027] like Figure 2 , Figure 7 , Figure 8 and Fig. 9 The power battery pack heat dissipation module also includes: a matching component 5, which is installed in the shell 1; the auxiliary switching component 6 and the heat dissipation component 4 are respectively connected to the fluid of the matching component 5, and the matching component 5 is provided with a discharge port 57 that can be opened and closed and is used to connect to the inner cavity of the shell 1.

[0028] In an optional implementation, an electrically controlled valve may be installed at the discharge port 57 to adjust the opening and closing state of the discharge port 57 .

[0029] In this embodiment, the matching component 5 includes: a third flow conduit 51 and a discharge control device. The auxiliary switching component 6 and the heat dissipation component 4 are respectively connected to the third flow conduit 51. The third flow conduit 51 is provided with a discharge port 57. The discharge control device is installed at the discharge port 57 to control the opening and closing state of the discharge port 57.

[0030] A third heat sink 511 is fixedly mounted on the inner side of the third air guide tube 51 , and the third heat sink 511 is fixedly attached to the side surface of the battery assembly 3 .

[0031] Furthermore, the discharge control device includes: a trigger rod 52, a fixed rod 53, an electric push rod 56, a blocking block 58, a support block 59, a trigger block 591 and a spring 592; the fixed rod 53 is connected to the shell 1 or the third flow guide tube 51, the electric push rod 56 is installed on the fixed rod 53, and the electric push rod 56 is transmission-connected to the trigger rod 52; the blocking block 58 is located on the inner side of the third flow guide tube 51 to block the discharge port 57; the support block 59 is connected to the third flow guide tube 51, the trigger block 591 passes through the support block 59 and is connected to the blocking block 58; the trigger block 591 abuts against the trigger rod 52, the spring 592 is installed between the trigger block 591 and the support block 59, and the spring 592 has a tendency to drive the trigger block 591 and keep the blocking block 58 blocking the discharge port 57. A support tube 55 is fixedly installed between the trigger rod 52 and the fixed rod 53 , and a connecting rod 54 is sleeved on the support tube 55 , through which the movable end of the electric push rod 56 and the trigger rod 52 can be connected.

[0032] The trigger rod 52 is provided with a conical groove, and the trigger block 591 is inserted in the conical groove; the extension direction of the trigger rod 52 and the axial direction of the spring 592 have an angle. When the electric push rod 56 drives the trigger rod 52 to move along its own extension direction or the trigger rod 52 is hit, the conical groove will push the trigger block 591 to make the blocking block 58 disengage from the discharge port 57.

[0033] When the trigger rod 52 slides, the inner wall of the conical groove squeezes the trigger block 591, and the trigger block 591 pushes the blocking block 58 to separate from the discharge port 57, and the liquid inside the third guide tube 51 is discharged into the housing 1; in the initial state without collision or the electric push rod 56, the blocking block 58 keeps blocking the discharge port 57 under the action of the spring 592; like Figure 2 , Figure 5 and Figure 6 As shown, the heat dissipation assembly 4 includes: a first flow conduit 41 and a plurality of second flow conduits 42; the first flow conduit 41 is fluidically connected to the auxiliary switching assembly 6, and the plurality of second flow conduits 42 are arranged at intervals and are respectively fluidically connected to the first flow conduit 41; the first flow conduit 41 and the second flow conduit 42 are respectively attached to the battery assembly 3.

[0034] In this embodiment, the first flow conduit 41 is fluidically connected to the matching component 5 via the second flow conduit 42 .

[0035] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, a second heat sink 421 is fixedly installed on the inner side of the second guide tube 42, and the second heat sink 421 is fixedly attached to the side of the heat sink 35. A connecting tube 43 is fixedly installed at the intersection of the two groups of first guide tubes 41, and a support frame 44 is fixedly installed on the side of the connecting tube 43, and the support frame 44 penetrates the housing 1. The first guide tube 41 and the second guide tube 42 can be used for diversion operation, so that the wind flow and the liquid flow pass through the side of the heat sink 35 to take away the heat, and the first heat sink 411 and the second heat sink 421 can transfer and guide the heat on the side of the heat sink 35, so that the heat is taken away faster, and finally the wind flow and the liquid flow are discharged through the connecting tube 43.

[0036] like Figure 2 , Figure 3 and Figure 4 As shown, the battery assembly 3 includes: a bottom plate 31, a top plate 32, a heat dissipation tube 35, a plurality of battery cells 33 and a plurality of heat conduction plates 34; the bottom plate 31 is connected to the bottom of the heat dissipation tube 35, and a plurality of battery cells 33 are arranged and installed in the heat dissipation tube 35; a heat conduction plate 34 is installed between any two adjacent battery cells 33, and between the battery cells 33 and the heat dissipation tube 35; the top plate 32 covers the top of the heat dissipation tube 35. The heat conduction plate 34 can guide the heat from the side of the battery cell 33 to the heat dissipation tube 35, and then conduct the heat to the heat dissipation assembly 4 and the matching assembly 5 through the heat dissipation tube 35, thereby achieving heat dissipation.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power battery pack heat dissipation module, comprising: A housing (1), a cover plate (2) and a battery assembly (3), wherein the battery assembly (3) is installed inside the housing (1) and the cover plate (2) covers the housing (1); Characterized in that the power battery pack heat dissipation module further comprises: a heat dissipation component (4) and an auxiliary switching component (6); The heat dissipation component (4) is installed in the housing (1), and the heat dissipation component (4) and the battery component (3) are thermally coordinated; The auxiliary switching component (6) has an air cooling pipe (613) and a liquid cooling pipe (661), and the auxiliary switching component (6) is used to enable one of the air cooling pipe (613) and the liquid cooling pipe (661) to be in fluid communication with the heat dissipation component (4).

2. The power battery pack heat dissipation module according to claim 1, characterized in that: The auxiliary switching assembly (6) comprises a working box (61); the working box (61) is provided with a first guide groove (611), a guide groove (66), a first connecting groove (63), and a second connecting groove (64); The first guide groove (611), the guide groove (66), the first connecting groove (63), and the second connecting groove (64) are arranged at intervals around the working chamber (62); The air cooling pipe (613) is connected to the first guide groove (611), the liquid cooling pipe (661) is connected to the guide groove (66), and the first connecting groove (63) and the second connecting groove (64) are respectively in fluid communication with the heat dissipation assembly (4); A matching rod (621) is installed in the working chamber (62), the matching rod (621) is transmission-connected to a rotating driving member (623), and the matching rod (621) is provided with a radial flow channel (622); The rotating driving member (623) drives the matching rod (621) to rotate, so as to realize the switching between the air cooling state and the liquid cooling state; In the air-cooling state, the first guide groove (611) is connected to at least one of the first connecting groove (63) and the second connecting groove (64) via the radial flow channel (622), and the guide groove (66) is blocked by the matching rod (621); In the liquid cooling state, the guide groove (66) is connected to the first connecting groove (63) and the second connecting groove (64) via the radial flow channel (622), and the first guide groove (611) is blocked by the matching rod (621).

3. The power battery pack heat dissipation module according to claim 2, characterized in that: The working box (61) is provided with a second guide groove (612) and a third connecting groove (65), and the working chamber (62) is connected to the second guide groove (612) through the third connecting groove (65); The air-cooling state also includes a radiator air-cooling condition and an inner cavity air-cooling condition. Under the radiator air-cooling condition, at least one of the first connecting groove (63) and the second connecting groove (64) is connected to the first guide groove (611) via the radial flow channel (622). Under the inner cavity air-cooling condition, the first guide groove (611) is connected to the third connecting groove (65) via the radial flow channel (622).

4. The power battery pack heat dissipation module according to claim 1 or 2, characterized in that: The power battery pack heat dissipation module further comprises: a matching component (5), wherein the matching component (5) is installed in the housing (1); The auxiliary switching component (6) and the heat dissipation component (4) are respectively in fluid communication with the matching component (5), and the matching component (5) is provided with a discharge port (57) which can be opened and closed and is used to communicate with the inner cavity of the housing (1).

5. The power battery pack heat dissipation module according to claim 4, characterized in that: The matching component (5) comprises: a third flow guide tube (51) and a discharge control device, the auxiliary switching component (6) and the heat dissipation component (4) are respectively connected to the third flow guide tube (51), the third flow guide tube (51) is provided with the discharge port (57), and the discharge control device is installed at the discharge port (57) to control the opening and closing state of the discharge port (57).

6. The power battery pack heat dissipation module according to claim 5, characterized in that: The discharge control device comprises: a trigger rod (52), a fixing rod (53), an electric push rod (56), a blocking block (58), a supporting block (59), a trigger block (591) and a spring (592); The fixing rod (53) is connected to the housing (1) or the third flow guide tube (51), the electric push rod (56) is mounted on the fixing rod (53), and the electric push rod (56) is transmission-connected to the trigger rod (52); The blocking block (58) is located inside the third flow guide pipe (51) and is used to block the discharge port (57); The support block (59) is connected to the third flow guide pipe (51), and the trigger block (591) passes through the support block (59) and is connected to the blocking block (58); The trigger block (591) abuts against the trigger rod (52), the spring (592) is installed between the trigger block (591) and the support block (59), and the spring (592) has a tendency to drive the trigger block (591) and enable the blocking block (58) to keep blocking the discharge port (57).

7. The power battery pack heat dissipation module according to claim 6, characterized in that: The trigger rod (52) is provided with a conical groove, and the trigger block (591) is inserted into the conical groove; The extension direction of the trigger rod (52) and the axial direction of the spring (592) form an included angle, and when the electric push rod (56) drives the trigger rod (52) to move along its own extension direction or the trigger rod (52) is impacted, the conical groove pushes the trigger block (591) to cause the blocking block (58) to separate from the discharge port (57).

8. The power battery pack heat dissipation module according to claim 4, characterized in that: The heat dissipation assembly (4) comprises: a first flow guide tube (41) and a plurality of second flow guide tubes (42); The first flow guide pipe (41) is in fluid communication with the auxiliary switching assembly (6); a plurality of the second flow guide pipes (42) are arranged at intervals and are respectively in fluid communication with the first flow guide pipe (41); The first flow guide tube (41) and the second flow guide tube (42) are respectively attached to the battery assembly (3).

9. The power battery pack heat dissipation module according to claim 8, characterized in that: The first flow guide tube (41) is fluidically connected to the matching component (5) via the second flow guide tube (42).

10. The power battery pack heat dissipation module according to claim 1, characterized in that: The battery assembly (3) comprises: a bottom plate (31), a top plate (32), a heat dissipation cylinder (35), a plurality of battery cores (33) and a plurality of heat conduction plates (34); The bottom plate (31) is connected to the bottom of the heat dissipation tube (35), and a plurality of battery cells (33) are arranged and installed in the heat dissipation tube (35); The heat conducting plate (34) is installed between any two adjacent battery cores (33), and between the battery core (33) and the heat dissipation cylinder (35); The top plate (32) covers the top of the heat dissipation cylinder (35).

Images