A battery pack temperature control device and temperature management system

Abstract

The utility model relates to battery temperature control technical field discloses a kind of battery pack temperature control device and temperature management system, including battery pack, heat exchanger and tail gas pipe, battery pack includes battery monomer;Passage for heat exchange medium flow is provided in heat exchanger;Heat exchanger includes first heat exchanger;First heat exchanger is set between adjacent battery monomer;Tail gas pipe includes first pipe body, and first pipe body is set along first direction and is connected first heat exchanger through;First heat exchanger can quickly disperse the heat of tail gas in first pipe body to battery pack inside, realizes the heating of battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery temperature control technology, and in particular to a battery pack temperature control device and temperature management system. Background Technology

[0002] Existing battery performance degrades significantly at low temperatures. Pure electric vehicles can rapidly warm up their batteries through pulse discharge, but this comes at the cost of sacrificing some of the vehicle's range. Hybrid or range-extended vehicles, while generating a continuous stream of heat from their internal combustion engines, struggle to utilize this heat effectively. Utility Model Content

[0003] The technical problem this utility model aims to solve is: how to better utilize the heat generated by an internal combustion engine to regulate the temperature inside a battery pack. To solve the above technical problem, this utility model provides a battery pack temperature control device and temperature management system, having intersecting first and second directions, including:

[0004] A battery pack, the battery pack comprising a plurality of battery cells arranged along the first direction;

[0005] A heat exchanger, wherein the heat exchanger is provided with a channel for the flow of a heat exchange medium; the heat exchanger includes a first heat exchanger; the first heat exchanger is disposed between adjacent battery cells along a first direction; and both ends of the first heat exchanger extend out to the outside of the battery pack along a second direction.

[0006] The exhaust pipe includes a first pipe body that extends along a first direction and passes through and connects to the first heat exchanger.

[0007] Preferably, the heat exchanger further includes a second heat exchanger, which is disposed on both sides of the battery pack in the second direction and extends along the first direction;

[0008] The two ends of the first heat exchanger are respectively connected to the second heat exchangers on both sides of the battery pack in the second direction, and the second heat exchangers on both sides of the battery pack in the second direction are connected to each other.

[0009] Preferably, the temperature control device further includes a drive pump, which is connected in communication with the two second heat exchangers and is configured to drive the heat exchange medium to circulate between the channels of the second heat exchangers and the first heat exchanger.

[0010] Preferably, the temperature control device further includes a preheater heat exchanger, which is sleeved on the outside of the air inlet side of the first tube, and the two ends of the preheater heat exchanger are respectively connected to the second heat exchangers of the battery pack on both sides in the second direction.

[0011] Preferably, the first heat exchanger includes a plurality of parallel front heat exchange plates, each of the front heat exchange plates being disposed between adjacent battery cells along the first direction; the first tube body extends through and connects the plurality of front heat exchange plates; the front heat exchange plates are disposed on one side of the air inlet end of the first tube body;

[0012] The front heat exchange plate is provided with a manifold and a plurality of front fluid pipes. The manifold extends along the second direction, and its two ends are respectively connected to the second heat exchangers of the battery pack on both sides of the second direction. The manifold is arranged adjacent to the first pipe body.

[0013] The front fluid pipe extends along the second direction and includes a first end and a second end. The first end is connected to the manifold, and the second end is connected to the second heat exchanger of the battery pack on one side of the second direction.

[0014] Preferably, the first tube body is located at the center of symmetry of the front heat exchange plate in the second direction, and the plurality of front fluid tubes are located on both sides of the first tube body in the second direction.

[0015] Preferably, the first heat exchanger further includes a plurality of parallel rear heat exchange plates, each of the rear heat exchange plates being disposed between adjacent battery cells along the first direction; the first tube body is connected through the plurality of rear heat exchange plates; the rear heat exchange plates are disposed on one side of the gas outlet end of the first tube body;

[0016] The rear heat exchange plate is provided with a plurality of rear fluid pipes, which extend along the second direction and are arranged adjacent to the first pipe body. Both ends of the plurality of rear fluid pipes are respectively connected to the second heat exchangers on both sides of the battery pack in the second direction.

[0017] Preferably, the first tube body is provided with hot fins, which are disposed on the inner circumferential surface of the first tube body at the position corresponding to the rear heat exchange plate.

[0018] Multiple heating fins are evenly and spaced apart on the inner circumference of the first tube.

[0019] This utility model also provides a battery pack temperature management system, including an exhaust gas emission system, a drive pump, a pre-heat exchanger, and the battery pack temperature control device described above.

[0020] The exhaust system is configured to output exhaust gas with heat.

[0021] The drive pump is used to drive the heat exchange medium to circulate between the two first heat exchangers.

[0022] The pre-heat exchanger is sleeved on one side of the air inlet end of the first pipe body;

[0023] The air inlet of the first pipe is connected to the exhaust gas system; the drive pump and the preheater are respectively connected to the two first heat exchangers, and the drive pump and the preheater are connected in a manner; a first liquid diversion valve is provided between the drive pump and the preheater, and a second liquid diversion valve is provided between the preheater and the first heat exchanger.

[0024] A refrigeration system, comprising a refrigeration module, wherein the two ends of the refrigeration module are respectively connected to the first liquid diversion valve and the second liquid diversion valve.

[0025] Preferably, the exhaust system includes an internal combustion engine and a three-way catalytic converter, and the exhaust end of the internal combustion engine is connected to the exhaust pipe through the three-way catalytic converter;

[0026] The exhaust pipe also includes a second pipe body and an exhaust pipe. The first pipe body and the second pipe body are connected in parallel, and the two ends of the first pipe body and the second pipe body connected in parallel are respectively connected to a first exhaust gas diversion valve and a second exhaust gas diversion valve. The first exhaust gas diversion valve is also connected to the three-way catalytic converter, and the second exhaust gas diversion valve is also connected to the exhaust pipe.

[0027] Compared with the prior art, the battery pack temperature control device and temperature management system provided in this embodiment of the present invention have the following advantages:

[0028] In this invention, a first heat exchanger is disposed between adjacent battery cells; the exhaust pipe includes a first pipe body, which extends along a first direction and penetrates and connects to the first heat exchanger; the first heat exchanger can quickly disperse the heat of the exhaust gas in the first pipe body to the inside of the battery pack, thereby heating the battery pack. Furthermore, the battery pack temperature management system also includes a cooling system. By blocking the emission of exhaust gas from the first pipe body and adjusting the flow direction of the circulating fluid through two liquid diversion valves, the circulating fluid passes through the cooling module, thus cooling the battery pack and achieving temperature management and control of the battery pack. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the battery pack temperature management system of this utility model;

[0030] Figure 2 This is a schematic diagram of the battery pack temperature control device of this utility model;

[0031] Figure 3 This is another structural schematic diagram of the battery pack temperature control device of this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the front heat exchange plate of this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the rear heat exchange plate of this utility model;

[0034] Figure 6 This is a schematic diagram of the structural arrangement of a battery cell according to this utility model.

[0035] In the diagram: 1. Battery pack; 11. Individual battery cell;

[0036] 2. Heat exchanger; 22. Second heat exchanger; 21. First heat exchanger; 211. Heat exchange plate; 212. Front heat exchange plate; 2121. Manifold; 2122. Front fluid pipe; 2122a. First end; 2122b. Second end; 213. Rear heat exchange plate; 2131. Rear fluid pipe; 2132. Heat fins;

[0037] 3. Exhaust pipe; 31. First pipe body; 32. Second pipe body; 33. Exhaust pipe; 34. First exhaust gas diversion valve; 35. Second exhaust gas diversion valve;

[0038] 4. Drive pump; 41. First liquid diversion valve; 42. Second liquid diversion valve; 5. Pre-heat exchanger; 6. Refrigeration module; 7. Internal combustion engine; 71. Three-way catalytic converter. Detailed Implementation

[0039] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0040] like Figure 2 As shown, a preferred embodiment of this utility model provides a battery pack temperature control device and temperature management system, which has an intersecting first direction X and a second direction Y. It can be understood that the first direction is defined as X, and the second direction as Y. The first and second directions can be set perpendicularly or not perpendicularly, as shown below. Figure 2 As shown, the angle between the surface of the battery cell 11 that contacts the first heat exchanger 21 and the exhaust pipe 3 is 90 degrees. This is the case where the first direction and the second direction are perpendicular. Figure 6 As shown, when the angle between the surface of the battery cell 11 that contacts the first heat exchanger 21 and the exhaust pipe 3 is greater than 50 degrees and less than 90 degrees, the first direction and the second direction are not perpendicular. That is, the first direction and the second direction can be set perpendicularly or not perpendicularly, depending on the specific requirements.

[0041] The battery pack temperature control device includes a battery pack 1 and a heat exchanger 2. The battery pack 1 includes multiple battery cells 11 arranged along a first direction X. The heat exchanger 2 has a channel inside for the flow of heat exchange medium. The heat exchanger 2 includes a first heat exchanger 21. The first heat exchanger 21 is disposed between adjacent battery cells 11 along the first direction X. The two ends of the first heat exchanger 21 extend to the outside of the battery pack 1 along a second direction Y. The two ends of the first heat exchanger 21 are connected to the outside of the battery pack 1 by a pipe. In addition, it also includes an exhaust pipe 3. The exhaust pipe 3 includes a first pipe body 31. The first pipe body 31 extends along the first direction X and passes through and connects to the first heat exchanger 21.

[0042] Specifically, in this embodiment, the first heat exchanger 21 is directly disposed inside the battery pack 1, between adjacent battery cells 11 along the first direction X, and the exhaust pipe 3 is connected through the first heat exchanger 21. The heat from the hot gas in the exhaust pipe 3 can be more directly and conveniently diffused to the first heat exchanger 21, and then quickly diffused throughout the entire battery pack 1 through the first heat exchanger 21. In one embodiment, only two battery cells 11 can be disposed in the battery pack 1, in which case only one first heat exchanger 21 is required. In another embodiment, three or more battery cells 11 can be disposed in the battery pack 1 as needed, and a first heat exchanger 21 can be disposed between each group of battery cells 11. Multiple groups of first heat exchangers 21 extend along the second direction Y and are disposed between different battery cells 11, thereby better distributing heat to all parts of the battery pack 1 and achieving heating of the battery pack.

[0043] In another embodiment, the two ends of the first heat exchanger 21 extend to the outside of the battery cell 11 along the second direction Y, and the two ends of the first heat exchanger 21 are connected, so that the heat exchange medium at both ends of the first heat exchanger 21 can circulate. It can be understood that the two ends of the first heat exchanger 21 are provided with circulation paths, which facilitates the flow of the heat exchange medium, helps to improve the temperature uniformity of the heat exchange medium in the first heat exchanger 21, and further helps to improve the uniformity of heat exchange between the first heat exchanger 21 and adjacent battery cells 11. This helps to ensure the stability and reliability of the heating process of the battery pack 1, and helps to ensure the stability and balance of the internal heating of the battery pack 1, avoiding the danger caused by local temperature imbalance in the battery pack 1, and also avoiding the adverse effects on the performance and lifespan of the battery pack 1 caused by temperature imbalance.

[0044] In one embodiment, the heat exchanger 2 further includes a second heat exchanger 22, which is disposed on both sides of the battery pack 1 in the second direction Y and extends along the first direction X. The two ends of the first heat exchanger 21 are respectively connected to the second heat exchangers 22 on both sides of the battery pack 1 in the second direction Y, and the second heat exchangers 22 on both sides of the battery pack 1 in the second direction are connected to each other.

[0045] Understandably, the second heat exchanger 22 extends along the first direction X and is located on both sides of the battery pack 1 in the second direction Y. This allows for better overall heat preservation of the battery pack 1. On the one hand, it can prevent the internal temperature of the battery pack 1 from diffusing outward, thus avoiding the problem of unstable internal temperature of the battery pack 1. On the other hand, it can also ensure that the temperature difference between the edge and the center of the battery pack 1 is not too large, thus avoiding the problem of temperature imbalance between the center and the edge of the battery pack 1.

[0046] In one embodiment, the heat exchanger 2 mainly adopts a plate-shaped structure. The plate-shaped second heat exchanger 22 and first heat exchanger 21 can better fit the square battery pack 1 and the battery cells 11, increasing the contact area and improving the speed and uniformity of heat diffusion, thereby better, more uniformly and stably controlling the temperature of each battery cell 11 in the battery pack 1. In addition, in this embodiment, the first direction and the second direction are set perpendicularly, thereby limiting the setting orientation of the second heat exchanger 22 and the first heat exchanger 21 to suit the square battery.

[0047] In some embodiments, the temperature control device further includes a drive pump 4, which is connected to two second heat exchangers 22. The drive pump 4 is configured to drive the heat exchange medium to circulate between the channels of the second heat exchanger 22 and the first heat exchanger 21. Specifically, in this embodiment, the second heat exchanger 22, the drive pump 4, the second heat exchanger 22, and the first heat exchanger 21 form a cycle. Driven by the drive pump 4, the heat exchange medium flows from the first heat exchanger 21 to one side of the second heat exchanger 22, then to the other side of the second heat exchanger 22, and then back to the first heat exchanger 21. In this process, the heat exchange medium first obtains heat from the exhaust gas in the first pipe body 31 of the exhaust pipe 3 through the first heat exchanger 21, and then rapidly diffuses the heat to various parts inside the battery pack 1 through the fluid channels in the second heat exchanger 22. Subsequently, the heat exchange medium flows sequentially to the second heat exchangers 22 on both sides of the battery pack 1 to heat and insulate the edges of the battery pack 1, thereby ensuring the balance and stability of the internal temperature of the battery pack 1.

[0048] In some embodiments, the temperature control device further includes a preheating heat exchanger 5, which is sleeved on the outer side of the air inlet end of the first tube 31. The two ends of the preheating heat exchanger 5 are respectively connected to the second heat exchangers 22 on both sides of the battery pack 1 in the second direction Y. By utilizing the heat exchange between the preheating heat exchanger 5 and the air inlet end of the first tube 31, the temperature of the air inlet end of the first tube 31 can be adjusted, which helps to introduce exhaust gas of a suitable temperature into the battery pack 1 through the air inlet end of the first tube 31, thus maintaining the normal operation of the battery pack 1.

[0049] like Figure 2As shown, in this embodiment, the two ends of the preheater 5 are connected to the drive pump 4 and the second heat exchanger 22, respectively. The heat exchange medium driven by the drive pump 4 must first pass through the preheater 5 before entering the second heat exchanger 22 on one side, and then enter the first heat exchanger 21 located inside the battery pack 1 through the second heat exchanger 22. The preheater 5 allows the heat exchange medium to acquire a large amount of heat carried by the exhaust gas in the first tube 31 of the exhaust pipe 3 in advance, thereby reducing the heat carried by the exhaust gas in the first tube 31 when it enters the battery pack 1, and preventing the temperature of the first tube 31 inside the battery pack 1 from becoming too high, which could damage the internal components of the battery pack 1. In addition, the drive pump 4 continuously drives the heat exchange medium to circulate between the second heat exchanger 22 and the first heat exchanger 21, which helps the heat exchange medium to exchange heat at various points, improves the temperature uniformity of the battery pack 1, and helps maintain the normal operation of the battery pack 1.

[0050] like Figure 4 and Figure 5 As shown, in some embodiments, the first heat exchanger 21 includes a plurality of parallel front heat exchange plates 212, each front heat exchange plate 212 being disposed between adjacent battery cells 11 along the first direction X. A first tube 31 is connected through the plurality of front heat exchange plates 212, and the front heat exchange plates 212 are disposed on the air inlet side of the first tube 31.

[0051] The front heat exchange plate 212 is provided with a manifold 2121 and a plurality of front fluid pipes 2122. The manifold 2121 extends along the second direction Y, and the two ends of the manifold 2121 are respectively connected to the second heat exchangers 22 on both sides of the battery pack 1 in the second direction Y. The manifold 2121 is arranged adjacent to the first pipe body 31. The front fluid pipes 2122 extend along the second direction Y. The front fluid pipes 2122 include a first end 2122a and a second end 2122b. The first end 2122a is connected to the manifold 2121, and the second end 2122b is connected to the second heat exchanger 22 on one side of the battery pack 1 in the second direction Y.

[0052] The manifold 2121 is used to connect multiple front fluid pipes 2122 to form a channel for the flow of heat exchange medium. At the same time, the manifold 2121 can also reduce the specific surface area of ​​the fluid channel inside the front heat exchange plate 212 at the first tube body 31. Based on this structure design, the heat exchange between the front heat exchange plate 212 and the first tube body 31 can be reduced, which helps to control the temperature of the front heat exchange plate 212.

[0053] In one embodiment, the first tube 31 is located at the center of symmetry of the front heat exchange plate 212 in the second direction Y, and a plurality of front fluid pipes 2122 are located on both sides of the first tube 31 in the second direction Y. That is, the first tube 31 being located at the center of symmetry of the front heat exchange plate 212 in the second direction Y helps to evenly diffuse the heat generated by the first tube 31 to both ends of the front heat exchange plate 212. In addition, the distribution of the front fluid pipes 2122 on both sides of the first tube 31 in the second direction Y helps to facilitate heat exchange on both sides through the front fluid pipes 2122, improving the uniformity of heat exchange on both sides. In particular, when a plurality of front fluid pipes 2122 are symmetrically located on both sides of the first tube 31 in the second direction Y, it further helps to improve the uniformity of heat on both sides of the front heat exchange plate 212, and helps to improve the temperature uniformity of the battery cells 11 on both sides of the front heat exchange plate 212.

[0054] In one embodiment, the first heat exchanger 21 further includes a plurality of parallel rear heat exchange plates 213, each rear heat exchange plate 213 being disposed between adjacent battery cells 11 along the first direction X; the first tube 31 is connected through the plurality of rear heat exchange plates 213; the rear heat exchange plates 213 are disposed on one side of the gas outlet end of the first tube 31; a plurality of rear fluid pipes 2131 are disposed inside the rear heat exchange plates 213, the plurality of rear fluid pipes 2131 extending along the second direction Y and being disposed adjacent to the first tube 31, and the two ends of the plurality of rear fluid pipes 2131 being respectively connected to the second heat exchangers 22 on both sides of the battery pack 1 in the second direction Y.

[0055] Specifically, in this embodiment, three or more battery cells 11 are arranged in an array along the first direction X in the battery pack 1. Correspondingly, the first heat exchanger 21 includes multiple heat exchange plates 211. The multiple heat exchange plates 211 are divided into front heat exchange plates 212 and rear heat exchange plates 213 according to their different positions. The multiple heat exchange plates 211 are connected in parallel, that is, both sides of each heat exchange plate 211 are connected to the second heat exchangers 22 on both sides of the battery pack 1 in the second direction Y. In this way, the heat exchange medium in the second heat exchanger 22 on the second side of the battery pack 1 in the second direction Y can be simultaneously dispersed into the multiple parallel heat exchange plates 211. The heat exchange medium in the multiple parallel heat exchange plates 211 finally converges into the second heat exchanger 22 on the other side of the battery pack 1, which helps to keep the temperature of each position in the battery pack 1 in a balanced state and makes the temperature inside the battery pack 1 more stable.

[0056] Furthermore, in actual use, the exhaust gas temperature inside the first pipe 31 is higher due to its proximity to the internal combustion engine 7, while the exhaust gas temperature is lower at the first pipe 31's outlet end. This results in an excessively large temperature difference between the side of the battery pack 1 closest to the first pipe 31's inlet and the other side, easily leading to an imbalance in the internal temperature of the battery pack 1. Therefore, it is necessary to adjust and reduce the temperature difference between the two sides of the battery pack 1 located on the first pipe 31. In this embodiment, the temperature difference between the two sides of the battery pack 1 is controlled by setting a front heat exchange plate 212 and a rear heat exchange plate 213. The front heat exchange plate 212 is equipped with a manifold 2121 and a front fluid pipe 2122. The manifold 2121 is located in the middle of the front heat exchange plate 212 and close to the first tube body 31, while the front fluid pipes 2122 are located on both sides of the first tube body 31 in the second direction Y. The heat exchange medium in the manifold 2121 is closest to the first tube body 31 and is the main force for obtaining heat from the exhaust gas in the first tube body 31. However, the manifold 2121 is connected to multiple front fluid pipes 2122 at the same time. The front fluid pipes 2122 are not connected to the first tube body. The direct contact at point 31 effectively reduces the cross-sectional area of ​​the heat exchange medium at the manifold 2121 of the front heat exchange plate 212. This means the specific surface area of ​​the internal fluid channels of the front heat exchange plate 212 at the first pipe body 31 is reduced. Compared to the structure of the rear heat exchange plate 213, which has multiple rear fluid pipes 2131 near the first pipe body 31, the manifold 2121 obviously receives less heat. Consequently, less heat is carried by the heat exchange medium flowing into the front fluid pipe 2122, thus reducing the temperature difference between the two sides of the battery pack 1. Furthermore, because the diameter of the pipe through which the heat exchange medium can flow is reduced at the manifold 2121, the flow velocity of the heat exchange medium at the manifold 2121 is also increased, further reducing the heat that the heat exchange medium can receive at the manifold 2121, and thus further reducing the temperature difference between the two sides of the battery pack 1. Furthermore, placing the first tube 31 at the center of symmetry of the heat exchange plate 211 along the second direction also improves the temperature uniformity inside the battery pack 1, especially the temperature on both sides of the battery pack 1 along the second direction Y.

[0057] In some embodiments, a heat fin 2132 is provided inside the first tube body 31, and the heat fin 2132 is disposed on the inner circumferential surface of the first tube body 31 at the position corresponding to the rear heat exchange plate 213.

[0058] Furthermore, multiple hot fins 2132 are evenly and spaced apart on the inner circumference of the first tube body 31.

[0059] Specifically, in this embodiment, in order to increase the heat that the battery pack 1 can obtain on the side away from the air inlet end of the first tube 31, so as to further reduce the temperature difference between the two sides of the battery pack 1, a heat fin 2132 is provided on the inner circumferential surface of the first tube 31. The heat fin 2132 can increase the contact area between the first tube 31 and the exhaust gas inside the tube, thereby improving the heat exchange efficiency of the rear heat exchange plate 213, so that the heat exchange medium in the rear heat exchange plate 213 can obtain more heat, thereby achieving the balance and stability of the temperature on both sides of the battery pack 1.

[0060] See Figure 1 and Figure 3 This utility model also provides a battery pack temperature management system, including an exhaust gas emission system, a refrigeration system, and the battery pack temperature control device described above; wherein, the exhaust gas emission system is configured to output exhaust gas with heat; the air inlet end of the first pipe 31 is connected to the exhaust gas emission system; the drive pump 4 and the preheater 5 are respectively connected to two first heat exchangers 21, and the drive pump 4 and the preheater 5 are connected, while a second heat exchanger 22 is connected between the drive pump 4 and the corresponding first heat exchanger 21, and a second heat exchanger 22 is also connected between the preheater 5 and the corresponding first heat exchanger 21; a first liquid diversion valve 41 is provided between the drive pump 4 and the preheater 5, and a second liquid diversion valve 42 is provided between the preheater 5 and the corresponding second heat exchanger 22;

[0061] The refrigeration system includes a refrigeration module 6, with the first liquid diversion valve 41 and the second liquid diversion valve 42 connected to its two ends respectively.

[0062] Specifically, in cold weather such as winter, the heat from the exhaust gas can be used in conjunction with the heat exchanger 2 to rapidly heat up the battery pack 1, ensuring a balanced and stable temperature within the battery pack 1. However, in hot summer weather, prolonged use of the battery pack 1 generates a significant amount of heat that accumulates inside it. Excessive heat in the battery pack 1 can pose a risk. Therefore, this embodiment includes an additional cooling system. The cooling module 6 in this system is connected in parallel to the heat exchanger 2 within the battery pack 1 via a first liquid diversion valve 41 and a second liquid diversion valve 42. When the temperature of the battery pack 1 becomes too high, the system closes the passage between the exhaust gas emission system and the battery pack 1, and instead opens the passage between the cooling module 6 and the heat exchanger 2 within the battery pack 1, thereby rapidly reducing the internal temperature of the battery pack 1 through the heat exchange medium.

[0063] In some embodiments, the exhaust system includes an internal combustion engine 7 and a three-way catalytic converter 71. The exhaust end of the internal combustion engine 7 is connected to the exhaust pipe 3 via the three-way catalytic converter 71. The exhaust pipe 3 also includes a second pipe body 32 and an exhaust pipe 33. The first pipe body 31 and the second pipe body 32 are connected in parallel, and the two ends of the parallel connection of the first pipe body 31 and the second pipe body 32 are respectively connected to a first exhaust gas split valve 34 and a second exhaust gas split valve 35. The first exhaust gas split valve 34 is also connected to the three-way catalytic converter 71, and the second exhaust gas split valve 35 is also connected to the exhaust pipe 33.

[0064] Specifically, in this embodiment, the exhaust pipe 3 is additionally provided with a second pipe body 32, which is connected in parallel with the first pipe body 31. When it is necessary to cool down the temperature inside the battery pack 1, the first exhaust gas diversion valve 34 and the second exhaust gas diversion valve 35 are adjusted so that the exhaust gas discharged from the internal combustion engine 7 does not pass through the first pipe body 31 into the exhaust pipe 33, but is discharged into the exhaust pipe 33 through the second pipe body 32. This avoids the heat in the exhaust gas from entering the battery pack 1 and increasing the temperature of the battery pack 1, thus affecting the efficiency of temperature reduction inside the battery pack 1.

[0065] In some embodiments, the fluid pipes inside the second heat exchanger 22 and the first heat exchanger 21 are made of copper alloy; the fluid pipes between the drive pump 4, the preheater 5, and the refrigeration module 6 are also made of copper alloy and are externally insulated. Copper alloy has a higher thermal conductivity, and using copper alloy in the second heat exchanger 22 and the first heat exchanger 21 improves the heat exchange efficiency of the heat exchange medium. Furthermore, using copper alloy with external insulation in the fluid pipes between the drive pump 4, the preheater 5, and the refrigeration module 6 prevents heat and cold loss, thereby improving heat exchange efficiency.

[0066] In summary, this utility model embodiment provides a temperature control device and temperature management system for a battery pack 1. By setting a first heat exchanger 21 between the individual battery cells 11 inside the battery pack 1 and connecting the first heat exchanger 21 to the first pipe body 31 of the exhaust pipe 3, the heat carried in the exhaust gas is fully utilized to heat the battery pack 1. Furthermore, by dividing the heat exchange plate 211 in the first heat exchanger 21 into a heat exchange plate 211 and a rear heat exchange plate 213, the different thermal efficiencies on both sides of the battery pack 1 are achieved, thereby regulating and balancing the temperature on both sides of the battery pack 1 and preventing temperature imbalance inside the battery pack 1. In addition, by setting multiple liquid diversion valves and connecting the cooling module 6 to the entire system, the internal temperature of the battery pack 1 can be better controlled and reduced when the temperature of the battery pack 1 is too high, achieving comprehensive and stable temperature control of the battery pack 1.

[0067] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. A battery pack temperature control device, having intersecting first direction (X) and second direction (Y), characterized in that, include: A battery pack (1) comprising a plurality of battery cells (11) arranged along the first direction (X); A heat exchanger (2) is provided inside, which has a channel for the flow of heat exchange medium; the heat exchanger (2) includes a first heat exchanger (21); the first heat exchanger (21) is disposed between adjacent battery cells (11) along the first direction (X); the two ends of the first heat exchanger (21) extend to the outside of the battery cells (11) along the second direction (Y); The exhaust pipe (3) includes a first pipe body (31) which extends along a first direction (X) and is connected through the first heat exchanger (21).

2. The battery pack temperature control device according to claim 1, characterized in that, The heat exchanger (2) further includes a second heat exchanger (22), which is disposed on both sides of the battery pack (1) in the second direction (Y) and extends along the first direction (X); The two ends of the first heat exchanger (21) are respectively connected to the second heat exchangers (22) on both sides of the battery pack (1) in the second direction (Y), and the battery pack (1) is connected between the second heat exchangers (22) on both sides of the second direction (Y).

3. The battery pack temperature control device according to claim 2, characterized in that, The temperature control device further includes a drive pump (4), which is connected to the second heat exchanger (22). The drive pump (4) is configured to drive the heat exchange medium to circulate between the channels of the second heat exchanger (22) and the first heat exchanger (21).

4. The battery pack temperature control device according to claim 2, characterized in that, The temperature control device also includes a preheater (5), which is sleeved on the outside of the air inlet side of the first tube (31). The two ends of the preheater (5) are respectively connected to the second heat exchangers (22) of the battery pack (1) on both sides of the second direction (Y).

5. The battery pack temperature control device according to claim 2, characterized in that, The first heat exchanger (21) includes a plurality of parallel front heat exchange plates (212), each of the front heat exchange plates (212) being disposed between adjacent battery cells (11) along the first direction (X); the first tube (31) is connected through the plurality of front heat exchange plates (212); the front heat exchange plates (212) are disposed on the air inlet side of the first tube (31); The front heat exchange plate (212) is provided with a manifold (2121) and a plurality of front fluid pipes (2122). The manifold (2121) extends along the second direction (Y), and the two ends of the manifold (2121) are respectively connected to the second heat exchangers (22) of the battery pack (1) on both sides of the second direction (Y). The manifold (2121) is arranged adjacent to the first pipe body (31). The front fluid pipe (2122) extends along the second direction (Y) and includes a first end (2122a) and a second end (2122b). The first end (2122a) is connected to the manifold (2121), and the second end (2122b) is connected to the second heat exchanger (22) of the battery pack (1) on the second direction (Y) side.

6. The battery pack temperature control device according to claim 5, characterized in that, The first tube body (31) is located at the center of symmetry of the front heat exchange plate (212) in the second direction (Y), and a plurality of the front fluid tubes (2122) are located on both sides of the first tube body (31) in the second direction (Y).

7. The battery pack temperature control device according to claim 2, characterized in that, The first heat exchanger (21) further includes a plurality of parallel rear heat exchange plates (213), each of the rear heat exchange plates (213) being disposed between adjacent battery cells (11) along the first direction (X); the first tube (31) is connected through the plurality of rear heat exchange plates (213); the rear heat exchange plates (213) are disposed on one side of the gas outlet end of the first tube (31); The rear heat exchange plate (213) is provided with a plurality of rear fluid pipes (2131). The plurality of rear fluid pipes (2131) extend along the second direction (Y) and are arranged adjacent to the first pipe body (31). Both ends of the plurality of rear fluid pipes (2131) are respectively connected to the second heat exchangers (22) on both sides of the battery pack (1) in the second direction (Y).

8. The battery pack temperature control device according to claim 7, characterized in that, The first tube body (31) is provided with a hot fin (2132), which is located on the inner circumferential surface of the first tube body (31) at the position corresponding to the rear heat exchange plate (213); Multiple hot fins (2132) are evenly and spaced apart on the inner circumference of the first tube (31).

9. A battery pack temperature management system, characterized in that, include: An exhaust gas emission system configured to output exhaust gas with heat; Drive pump (4), which is used to drive the heat exchange medium to circulate between the two first heat exchangers (21); A preheater (5) is fitted onto the air inlet side of the first tube (31). According to any one of claims 1 to 7, the air inlet of the first tube (31) is connected to the exhaust gas emission system; the drive pump (4) and the preheater (5) are respectively connected to two of the first heat exchangers (21), and the drive pump (4) and the preheater (5) are connected in a manner; a first liquid diversion valve (41) is provided between the drive pump (4) and the preheater (5), and a second liquid diversion valve (42) is provided between the preheater (5) and the first heat exchanger (21); The refrigeration system includes a refrigeration module (6), and the two ends of the refrigeration module (6) are respectively connected to the first liquid diversion valve (41) and the second liquid diversion valve (42).

10. The battery pack temperature management system according to claim 9, characterized in that, The exhaust system includes an internal combustion engine (7) and a three-way catalytic converter (71), and the exhaust end of the internal combustion engine (7) is connected to the exhaust pipe (3) through the three-way catalytic converter (71); The exhaust pipe (3) also includes a second pipe body (32) and an exhaust pipe (33). The first pipe body (31) and the second pipe body (32) are connected in parallel. The two ends of the first pipe body (31) and the second pipe body (32) are respectively connected to a first exhaust gas diversion valve (34) and a second exhaust gas diversion valve (35). The first exhaust gas diversion valve (34) is also connected to the three-way catalytic converter (71), and the second exhaust gas diversion valve (35) is also connected to the exhaust pipe (33).

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