CN219591495U - Integrated reflux type quick heat exchange device, battery box and new energy automobile - Google Patents

Abstract

The utility model relates to the technical field of heat exchange of equipment, and discloses an integrated backflow type rapid heat exchange device, a battery box body and a new energy automobile, which comprises a heat exchange plate, wherein a bent plate which is bent in a reciprocating manner is integrally formed on one side of the heat exchange plate, each bent unit of the bent plate and the heat exchange plate enclose a heat exchange flow channel, and all the heat exchange flow channels are divided into a plurality of heat exchange flow channel groups; the both sides of heat exchange board all are connected with the connecting piece, all are equipped with a plurality of intercommunication runners on the connecting piece, and a plurality of intercommunication runners communicate multiunit heat exchange runner group head and tail in proper order, and are equipped with the circulation runner group with the intercommunication runner intercommunication on the connecting piece. According to the heat exchange device, the bending plate is integrally formed on one side of the heat exchange plate, the plurality of heat exchange flow passages are formed between the bending plate and the heat exchange plate in a surrounding mode, the plurality of heat exchange flow passages form a plurality of heat exchange flow passage groups which are communicated with each other end to end in sequence and are in a reflux structure shape, and the problems that the heat exchange device in the prior art is poor in structural strength and limited in heat exchange sufficiency are solved.

Description

Integrated reflux type quick heat exchange device, battery box and new energy automobile

Technical Field

The utility model relates to the technical field of equipment heat exchange, in particular to an integrated reflux type rapid heat exchange device, a battery box body and a new energy automobile.

Background

The power electronic equipment generates a large amount of heat in the use process, and in order to enable the equipment to normally operate, heat dissipation treatment is required to be carried out on the equipment. Taking a new energy automobile as an example, in order to control the temperature of a battery pack in a battery box, a cooling device is usually arranged in the battery box for cooling and radiating, the existing cooling device mainly takes a heat exchange plate as a main part, and a heat exchange flow channel is usually arranged in the heat exchange plate.

Although the existing heat exchange device can realize a better heat exchange effect, in the actual use process, on one hand, the processing and manufacturing difficulty of the heat exchange flow channel are high, the cost is high, and the structural strength of the existing heat exchange device is limited, so that when the heat exchange medium is a high-pressure medium such as gas in the use process, the heat exchange device can possibly leak the heat exchange medium because the heat exchange medium cannot bear the high pressure; on the other hand, the heat exchange flow channel in the existing heat exchange device can exchange heat through the heat exchange of the heat exchange medium, but the heat dissipation capacity of the heat exchange device is limited, so that the overall heat exchange performance of the heat exchange device is limited; meanwhile, the contact time between the heat exchange medium and the heat exchange device in the heat exchange process of the existing heat exchange device is short, so that the sufficiency of heat exchange is limited.

Disclosure of Invention

The utility model aims to provide an integrated reflux type rapid heat exchange device, a battery box body and a new energy automobile, so as to solve the problems of poor structural strength and limited heat exchange sufficiency of the heat exchange device in the prior art.

In order to solve the problems, the utility model adopts the following technical scheme: the integrated reflux type rapid heat exchange device comprises a heat exchange plate, wherein a bent plate in a reciprocating bent shape is integrally formed on one side of the heat exchange plate, each bent unit of the bent plate and the heat exchange plate enclose a heat exchange flow channel, and all the heat exchange flow channels are divided into a plurality of heat exchange flow channel groups; the both sides of heat exchange board all are connected with the connecting piece, all are equipped with a plurality of intercommunication runners on the connecting piece, and a plurality of intercommunication runners communicate multiunit heat exchange runner group head and tail in proper order, and are equipped with the circulation runner group with the intercommunication runner intercommunication on the connecting piece.

The principle and beneficial effect of this scheme are: the connecting piece is provided with a circulating runner group, and heat exchange medium can be injected into the communicating runner by using the circulating runner group, so that the heat exchange medium flows into the heat exchange runner to exchange heat; the heat exchange channels are sequentially communicated end to end through the plurality of communication channels, so that after the heat exchange medium flows into the heat exchange channel groups, the heat exchange medium flows through the heat exchange channel groups which are communicated with each other, and the heat exchange medium can be fully contacted with the heat exchange plates to perform more full heat exchange.

In the utility model, the bending plate is integrally formed on the heat exchange plate, so that the connection between the bending plate and the heat exchange plate is very stable, therefore, the heat exchange flow passage enclosed between the bending unit and the heat exchange plate, which are arranged in a reciprocating bending way on the bending plate, has very good sealing property, and in the use process, even if the pressure of a heat exchange medium is large, the heat exchange flow passage can bear the large pressure to realize stable heat exchange, and the bending plate and the heat exchange plate are integrally formed, so that the heat exchange device can quickly and fully complete heat exchange, and the whole structural strength of the heat exchange device is taken into consideration.

Meanwhile, the whole bending plate is in a reciprocating bending shape, so that one side of the bending plate deviating from the heat exchange plate has larger surface area compared with a plane plate structure, the bending plate has stronger heat dissipation effect in the heat exchange process, and the integral heat exchange effect of the heat exchange device can be effectively improved.

Preferably, as a modification, all the heat exchange flow channel components are divided into a plurality of heat exchange areas, and the number of the circulating flow channel groups is equal to that of the heat exchange areas and is arranged in a one-to-one correspondence manner.

In the scheme, all heat exchange flow channel components are divided into a plurality of heat exchange areas, and each heat exchange area is correspondingly provided with one circulating flow channel group, so that each circulating flow channel group independently supplies heat exchange media to the heat exchange flow channel group of the corresponding heat exchange area, each heat exchange area can be independently supplied with the heat exchange media, and the control of different heat exchange intensity of different heat exchange areas can be realized by controlling the supply speed of the heat exchange media in each heat exchange area so as to meet the use requirement of the heat exchange device for strong heat exchange of certain areas.

In addition, as the plurality of heat exchange areas are arranged, each heat exchange area is independently supplied with the heat exchange medium by using the circulating runner group, and even if the temperature of the supplied heat exchange medium is the same, the heat exchange plates can be provided with the plurality of liquid inlets, so that the problem that the heat exchange medium can only enter the heat exchange plates from one liquid inlet end and then flow out from the liquid outlet end, and the heat exchange effect is reduced due to the temperature change of the heat exchange medium is solved.

Preferably, as an improvement, the heat exchange plates are formed by fixedly connecting a plurality of adjacent base plates, the number of the bending plates is equal to that of the base plates and corresponds to that of the base plates one by one, each heat exchange area comprises a plurality of base plates, and each base plate and the corresponding bending plate enclose a plurality of heat exchange flow channels.

The heat exchange plate is formed by adjacently fixing a plurality of base plates, when the whole size of the heat exchange plate is larger, the heat exchange plate with the large size can be divided into a plurality of base plates with the small size for processing, so that the processing difficulty is greatly reduced, and the processing cost is effectively saved.

Preferably, as an improvement, the connecting piece comprises a left connecting plate and a right connecting plate which are fixedly connected to two ends of the heat exchange plate, and the communication flow passage comprises a left communication flow passage and a right communication flow passage which are respectively arranged on the left connecting plate and the right connecting plate; the circulating runner group comprises liquid inlet runners and liquid outlet runners which are respectively arranged on the right connecting plate and the left connecting plate, the number of the liquid inlet runners is equal to that of the heat exchange areas and is in one-to-one correspondence, the right connecting plate is fixedly connected with a plurality of liquid inlet blocking pieces for blocking the liquid inlet runners, and each liquid inlet runner can be communicated with one of the heat exchange areas only under the flow blocking effect of the liquid inlet blocking pieces; the left backflow blocking piece and the right backflow blocking piece which are used for blocking the left communication flow channel and the right communication flow channel are respectively and fixedly connected to the right connecting plate and the left connecting plate, and under the common choked flow action of the left backflow blocking piece and the right backflow blocking piece, a plurality of heat exchange flow channel groups in the same heat exchange area are communicated end to end in sequence.

In the scheme, the liquid inlet blocking piece is utilized to control the flow directions of a plurality of liquid inlet flow channels, so that each liquid inlet flow channel is only communicated with the heat exchange flow channel in one heat exchange area, and the control of different heat exchange intensities of different heat exchange areas is realized; meanwhile, the left reflux component and the right reflux component are utilized to control blocking of the left communication flow channel and the right communication flow channel, so that a plurality of groups of heat exchange flow channel groups in the same heat exchange area are sequentially communicated, so that heat exchange media can flow through the heat exchange flow channels in the heat exchange flow channel groups in sequence when flowing into the heat exchange area, the heat exchange media can fully contact with the heat exchange plates for heat exchange, and the heat exchange sufficiency is ensured.

Preferably, as an improvement, the two ends of the base plate extend out of the two ends of the bending plate respectively, and the left connecting plate and the right connecting plate are provided with matching steps matched with the parts of the base plate extending out of the bending plate.

In this scheme, through all setting up the cooperation step on left connecting plate and right connecting plate, when connecting left connecting plate and right connecting plate in the both sides of heat exchange plate, not only can realize counterpoint fast and accurately, simultaneously, because the setting of cooperation step, when being fixed in left connecting plate and right connecting plate in the heat exchange plate both sides, can adopt friction stir welding's mode to fix more conveniently.

Preferably, as a modification, the left connecting plate and the right connecting plate and the part of the base plate extending out of the curved plate enclose the left communicating flow channel and the right communicating flow channel.

In this scheme, utilize the base plate to extend to the part outside the crooked board and enclose into left intercommunication runner and right intercommunication runner respectively with left connecting plate and right connecting plate, when fixing left connecting plate and right connecting plate, can form left intercommunication runner and right intercommunication runner fast, simple structure.

Preferably, as a modification, the cross section of the bending unit on the bending plate is one or more of a circular arc shape, an elliptic arc shape, a triangle shape, a quadrilateral shape, a trapezoid shape and other polygons.

In this scheme, the curved unit transversal arc or polygonal structure of reciprocal bending on the curved plate, when guaranteeing that the curved plate has good intensity, can also carry out stable connection with the heat exchange plate, and can effectively increase the area of curved plate and supplementary heat transfer effect that promotes.

Preferably, as an improvement, the liquid inlet blocking piece is a liquid inlet blocking head, and a liquid inlet mounting hole which is communicated with the liquid inlet channel and matched with the liquid inlet blocking head is formed in the side wall of the right connecting plate; the left backflow blocking piece and the right backflow blocking piece are a left backflow blocking head and a right backflow blocking head, a left backflow mounting hole communicated with the left communication flow passage and matched with the left backflow blocking head is formed in the left connecting plate, and a right backflow mounting hole communicated with the right communication flow passage and matched with the right backflow blocking head is formed in the right connecting plate.

In this scheme, with feed liquor mounting hole and right backward flow mounting hole offer on the lateral wall of right connecting plate to offer left backward flow mounting hole on left connecting plate, processing is very convenient, and the installation is also very simple and convenient.

The battery box body is provided with the integrated backflow type rapid heat exchange device, the heat exchange plate is used as a bottom plate of the battery box body, and the bending plate is positioned on the bottom surface of the heat exchange plate.

In the scheme, the battery box body adopts the integrated reflux type rapid heat exchange device to exchange heat, so that the strength of the heat exchange device can be effectively ensured, and the sufficiency of heat exchange can be considered; meanwhile, in the scheme, the heat exchange plate is directly used as a bottom plate without arranging an additional bearing plate in the battery box body as the bottom plate, namely, the heat exchange plate is directly integrated in the frame of the battery box body, so that the whole structure of the battery box body is simpler, the weight is lighter, the battery box body directly utilizes the heat exchange plate to bear the weight of a battery and directly contact with the battery for heat dissipation, the heat dissipation effect is better, and the bending plate is positioned on the bottom surface of the heat exchange plate, so that the bending plate is in an exposed state, and the auxiliary heat dissipation effect of the bending plate is further improved.

And the new energy automobile utilizes the integrated reflux type rapid heat exchange device or the battery box body.

The new energy automobile adopts an integrated reflux type rapid heat exchange device or a battery box body, is favorable for the heat exchange device of the new energy automobile to have good structural strength and good heat exchange effect, and can also meet the technical requirement of strong heat exchange for certain areas in the use of the new energy automobile.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of the present utility model.

Fig. 2 is an exploded view of fig. 1 (with parts hidden).

Fig. 3 is a schematic view of a portion of a substrate and a curved plate (the substrate is located at the bottom of the curved plate) according to a first embodiment of the present utility model.

Fig. 4 is a schematic flow diagram of a heat exchange medium according to an embodiment of the utility model.

Fig. 5 is a schematic view of a heat exchange flow path along the middle of one of the heat exchange flow paths according to the first embodiment of the present utility model.

Fig. 6 is a longitudinal cross-sectional view along the central axis of one of the transition ducts in accordance with a first embodiment of the present utility model.

Fig. 7 is a longitudinal cross-sectional view along the central axis of one of the feed block heads in accordance with a first embodiment of the present utility model.

Fig. 8 is a schematic view of a battery case according to a first embodiment of the utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the heat exchange plate 1, the base plate 101, the heat exchange flow channel 1011, the bending plate 2, the left connecting plate 3, the matching boss 301, the left communicating flow channel 302, the liquid outlet flow channel 303, the right connecting plate 4, the right communicating flow channel 401, the liquid inlet flow channel 402, the transition flow channel 403, the left backflow blocking head 5, the liquid inlet blocking head 6, the right backflow blocking head 7 and the blocking head 8.

Example 1

The first embodiment is basically as shown in fig. 1-8: the integrated reflux type rapid heat exchange device comprises a heat exchange plate 1 and a bending plate 2 connected to the bottom side of the heat exchange plate 1, wherein in the embodiment, the heat exchange plate 1 is formed by adjacently welding a plurality of base plates 101 along the length direction of the heat exchange plate 1, and the welding mode adopts friction stir welding; correspondingly, the number of the bending plates 2 is equal to the number of the base plates 101 and the width is equal, meanwhile, the bending plates 2 are arranged in one-to-one correspondence with the base plates 101, when the base plates 101 are formed, the bending plates 2 are formed simultaneously in an extrusion integral forming mode, then the base plates 101, the bending plates 2, adjacent base plates 101 and the bending plates 2 are welded and fixed together, and finally the heat exchange plate 1 is formed, as shown in fig. 1, the heat exchange plate 1 in the embodiment comprises twelve base plates 101 and twelve bending plates 2.

Referring to fig. 2 and 3, the curved plates 2 are curved in a reciprocating manner, and each curved unit on the curved plates 2 and the substrate 101 enclose a heat exchange channel 1011, so that a plurality of heat exchange channels 1011 parallel to each other are enclosed between each curved plate 2 and the corresponding substrate 101. In this embodiment, the number of bends on each bending plate 2 is fourteen, so that fourteen heat exchange channels 1011 are enclosed between each substrate 101 and the corresponding bending plate 2, the cross section of each bending unit on the bending plate 2 is triangular, the bottom edge of the triangle is located on the substrate 101, the two sides of the triangle are in smooth transition with the substrate 101, the two sides of the triangle are located on the bending plate 2, and the two sides of the triangle are also in smooth transition at the top intersection, in other embodiments other than this embodiment, the cross section of each bending unit may be one or more combinations of circular arc, elliptical arc, quadrilateral, trapezoid and other polygons, which will not be repeated here.

All heat exchange flow channels 1011 are divided into a plurality of heat exchange flow channel groups, and the plurality of heat exchange flow channel groups are further divided into a plurality of heat exchange areas, in this embodiment, fourteen heat exchange flow channels 1011 enclosed by each base plate 101 and the corresponding curved plate 2 form a group of heat exchange flow channel groups, so twelve heat exchange flow channel groups are provided in total in the heat exchange plate 1. Meanwhile, the number of the heat exchange areas is two, twelve heat exchange flow channel groups are equally divided into two groups and distributed into the two heat exchange areas, so that six heat exchange flow channel groups are included in each heat exchange area. With reference to fig. 1 and 4, the left and right sides of the heat exchange plate 1 are connected with connectors, a plurality of communicating channels are arranged on the connectors, the plurality of communicating channels sequentially communicate the plurality of heat exchange channel groups in the same heat exchange area end to end, and the connectors are provided with circulating channel groups communicated with the heat exchange channels 1011.

As shown in fig. 2, in this embodiment, the connecting piece includes a left connecting plate 3 and a right connecting plate 4 fixedly connected to the left and right ends of the heat exchange plate 1 by friction stir welding, in order to facilitate welding of the left connecting plate 3 and the right connecting plate 4, and in combination with fig. 3 and 6, the left and right ends of the base plate 101 extend beyond the curved plate 2, and the left connecting plate 3 and the right connecting plate 4 are integrally formed with a mating boss 301 that mates with a portion of the base plate 101 extending beyond the curved plate 2, and the mating boss 301 is mated with a portion of the base plate 101 extending beyond the two ends, so that the mating positioning of the left connecting plate 3 and the right connecting plate 4 with the base plate 101 is facilitated, so that the left connecting plate 3 and the right connecting plate 4 are quickly and accurately welded, and simultaneously after the welding is completed, the top surface of the left connecting plate 3, the top surface of the base plate 101 and the top surface of the right connecting plate 4 are all located in the same plane.

Referring to fig. 4 to 7, the communication flow paths include a left communication flow path 302 and a right communication flow path 401 integrally formed on the left connection plate 3 and the right connection plate 4, respectively, and the left connection plate 3 and the right connection plate 4 and the portion of the substrate 101 extending beyond the curved plate 2 enclose the aforementioned left communication flow path 302 and right communication flow path 401, and the left communication flow path 302 and the right communication flow path 401 are both in communication with the heat exchange flow path 1011. The circulating runner group comprises a liquid inlet runner 402 and a liquid outlet runner 303, wherein the liquid inlet runner 402 is integrally formed on the right connecting plate 4, and the liquid outlet runner 303 is integrally formed on the left connecting plate 3. In this embodiment, the number of the liquid inlet channels 402 is two, the two liquid inlet channels 402 and the right communication channel 401 are located in the same plane, the right communication channel 401 is located between the heat exchange channel 1011 and the two liquid inlet channels 402, the heat exchange channel 1011 is communicated with the right communication channel 401, and meanwhile, a transition channel 403 is formed on the right connecting plate 4 in a drilling manner, so that the heat exchange medium in the liquid inlet channels 402 can flow into the adjacent liquid inlet channels 402 or the right communication channel 401 from the transition channel 403, and finally flows into the heat exchange channel 1011 from the right communication channel 401, and a communication channel similar to the transition channel 403 is drilled between the left communication channel 302 and the liquid outlet channel 303, so that the left communication channel 302 is communicated with the liquid outlet channel 303 at a proper position, and the specific structure and position thereof are not repeated herein.

A plurality of liquid inlet blocking pieces for blocking the liquid inlet channel 402 and a right backflow blocking piece for blocking the right communication channel 401 are fixedly connected to the right connecting plate 4, and a left backflow blocking piece for blocking the left communication channel 302 is fixedly connected to the left connecting plate 3. In this embodiment, the left backflow blocking member is the left backflow blocking head 5, the liquid inlet blocking member is the liquid inlet blocking head 6, and the right backflow blocking member is the right backflow blocking head 7, and the structure and the mounting form of the right backflow blocking head 7 are described as examples because the structures and the fixing modes of the three blocking heads are similar.

The right connecting plate 4 is provided with a right backflow installation hole which is communicated with the right communication flow channel 401 and has the same diameter as the right backflow blocking head 7, when the right backflow blocking head 7 is fixed, the right backflow blocking head 7 is inserted into the right backflow installation hole first, so that the right backflow blocking head 7 can block flow to the right communication flow channel 401. Similarly, a left backflow blocking head 5 and a liquid inlet blocking head 6 are respectively installed and fixed by arranging liquid inlet installation holes matched with the liquid inlet blocking head 6 on the right connecting plate 4 and arranging left backflow installation holes matched with the left backflow blocking head 5 on the left connecting plate 3; meanwhile, in order to conveniently control the flow direction of the heat exchange medium in the liquid inlet channel 402 and the liquid outlet channel 303, one end or two ends of the liquid inlet channel 402 and the liquid outlet channel 303 are welded with the plugging heads 8.

As shown in fig. 4, the right communicating channel 401 and the left communicating channel 302 are all communicated with all heat exchange channel groups, so that under the action of the flow blocking of the right backflow blocking head 7 and the flow blocking of the left backflow blocking head 5, all heat exchange channel groups in the same heat exchange region are sequentially communicated end to end, and under the action of the flow blocking of the liquid inlet blocking head 6, the heat exchange medium supplied by the liquid inlet channel 402 near the left side of the two liquid inlet channels 402 flows to one (shown by solid arrows) of six groups of heat exchange channel groups near the upper side heat exchange region in fig. 4, the heat exchange medium supplied by the liquid inlet channel 402 near the right side flows to one of six groups of heat exchange channel groups near the lower side heat exchange region in fig. 5, the flow directions of the heat exchange medium are shown by the arrows in fig. 5 (shown by hollow arrows), and the six groups of heat exchange channel groups in each heat exchange region are sequentially communicated end to form a backflow structure.

As shown in fig. 8, the battery box body adopts the above-mentioned integrated reflux type rapid heat exchange device, and the heat exchange plate 1 is directly used as the bottom plate of the battery box body, and the side surface of the heat exchange plate 1, on which the curved plate 2 is integrally formed, is positioned on the bottom surface of the battery box body, so that the top surface of the heat exchange plate 1 is in a planar structure, so that the battery in the prior art and other structures can be installed in the battery box body. The novel energy automobile adopts the integrated reflux type rapid heat exchange device or the battery box body, so that the battery box body or the heat exchange device in the novel energy automobile has good structural strength and good heat exchange effect.

Example two

The second embodiment differs from the first embodiment in that: in the first embodiment, the number of heat exchange areas is two, and the number of heat exchange flow channel groups in each heat exchange area is six, in this embodiment, the number of heat exchange flow channel groups and the number of heat exchange areas may be adjusted according to practical situations, for example, the number of heat exchange areas is set to three or other numbers, when the number of heat exchange areas is three and the total number of substrates 101 is twelve, three substrates 101 are included in each heat exchange area, and meanwhile, the number of heat exchange flow channel groups in each heat exchange area may be set to be different, for example, the number of heat exchange flow channel groups near the middle heat exchange area is smaller, so as to perform heat exchange with stronger strength, which belongs to the protection scope of this embodiment.

The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (10)

1. An integrative backward flow formula quick heat exchange device, includes heat exchange plate, its characterized in that: one side of the heat exchange plate is integrally formed with a bent plate in a reciprocating bending shape, each bent unit of the bent plate and the heat exchange plate enclose a heat exchange flow passage, and all the heat exchange flow passages are divided into a plurality of heat exchange flow passage groups; the heat exchange plate is characterized in that connecting pieces are connected to two sides of the heat exchange plate, a plurality of communication flow channels are formed in the connecting pieces, the plurality of communication flow channels are used for sequentially communicating the heat exchange flow channel groups in a head-tail mode, and circulating flow channel groups communicated with the communication flow channels are arranged on the connecting pieces.

2. The integrated reverse flow quick heat exchange device of claim 1 wherein: all the heat exchange flow channel components are divided into a plurality of heat exchange areas, and the number of the circulating flow channel groups is equal to that of the heat exchange areas and is in one-to-one correspondence with the heat exchange areas.

3. The integrated reverse flow quick heat exchange device of claim 2, wherein: the heat exchange plates are formed by fixedly connecting a plurality of substrates adjacently, the number of the bending plates is equal to that of the substrates and corresponds to that of the substrates one by one, each heat exchange area comprises a plurality of substrates, and each substrate and the corresponding bending plate enclose a plurality of heat exchange flow channels.

4. An integrated reverse flow quick heat exchange device according to claim 3 wherein: the connecting piece comprises a left connecting plate and a right connecting plate which are fixedly connected to two ends of the heat exchange plate, and the communication flow passage comprises a left communication flow passage and a right communication flow passage which are respectively arranged on the left connecting plate and the right connecting plate; the circulating runner group comprises liquid inlet runners and liquid outlet runners which are respectively arranged on the right connecting plate and the left connecting plate, the number of the liquid inlet runners is equal to that of the heat exchange areas and is in one-to-one correspondence, the right connecting plate is fixedly connected with a plurality of liquid inlet blocking pieces for blocking the liquid inlet runners, and each liquid inlet runner can be communicated with one of the heat exchange areas only under the flow blocking effect of the liquid inlet blocking pieces; the left backflow blocking piece and the right backflow blocking piece which are used for blocking the left communication flow channel and the right communication flow channel are respectively and fixedly connected to the right connecting plate and the left connecting plate, and under the common choked flow action of the left backflow blocking piece and the right backflow blocking piece, a plurality of heat exchange flow channel groups in the same heat exchange area are communicated end to end in sequence.

5. The integrated reverse flow quick heat exchange device of claim 4 wherein: the two ends of the base plate extend out of the two ends of the bending plate respectively, and the left connecting plate and the right connecting plate are respectively provided with a matching step matched with the part of the base plate extending out of the bending plate.

6. The integrated reverse flow quick heat exchange device of claim 5 wherein: the left connecting plate, the right connecting plate and the parts of the base plate extending out of the bending plate enclose the left communicating flow passage and the right communicating flow passage.

7. The integrated reverse flow quick heat exchange device of claim 1 wherein: the cross section of the bending unit on the bending plate is one or a plurality of combinations of arc, elliptic arc and polygon.

8. The integrated reverse flow quick heat exchange device of claim 6 wherein: the liquid inlet blocking piece is a liquid inlet blocking head, and a liquid inlet mounting hole which is communicated with the liquid inlet channel and matched with the liquid inlet blocking head is formed in the side wall of the right connecting plate; the left backflow blocking piece and the right backflow blocking piece are a left backflow blocking head and a right backflow blocking head, a left backflow mounting hole communicated with the left communication flow passage and matched with the left backflow blocking head is formed in the left connecting plate, and a right backflow mounting hole communicated with the right communication flow passage and matched with the right backflow blocking head is formed in the right connecting plate.

9. The battery box, its characterized in that: use of an integrated back flow quick heat exchange device according to any one of claims 1-8, said heat exchange plate being the bottom plate of the battery compartment and the curved plate being located on the bottom surface of the heat exchange plate.

10. A new energy vehicle using the integrated reverse flow type rapid heat exchange device according to any one of claims 1 to 8 or the battery case according to claim 9.