CN219106311U

CN219106311U - Battery pack temperature adjusting structure, battery system and power utilization device

Info

Publication number: CN219106311U
Application number: CN202320025582.3U
Authority: CN
Inventors: 秦宏伟; 徐文军; 杨友进; 周杰
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-05-30
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses a battery pack temperature adjusting structure, a battery system and an electric device, wherein the battery pack temperature adjusting structure comprises a temperature adjusting plate; the temperature adjusting plate is closely attached to the battery pack to be adjusted in temperature and at least covers the surface of the battery pack to be adjusted in temperature; the temperature adjusting plate is internally provided with a middle channel and edge channels positioned at two sides of the middle channel, the edge channels are used for introducing fluid medium to circularly flow so as to adjust the temperature of two side edge areas of the surface to be adjusted, and the middle channel is used for introducing fluid medium to circularly flow so as to adjust the temperature of the middle area of the surface to be adjusted; the edge channel and the middle channel are respectively provided with a turbulent flow protrusion, and the density of the turbulent flow protrusions in one of the edge channel and the middle channel with larger temperature adjustment is larger than that of the turbulent flow protrusions in the other. And because the turbulence bulge can improve the turbulence degree of the fluid, the heating efficiency of one of the edge channels and the middle channels, which needs to be adjusted to be higher in temperature, is improved, and the temperature difference between the edge and the middle of the battery pack is reduced.

Description

Battery pack temperature adjusting structure, battery system and power utilization device

Technical Field

The present utility model relates to the field of battery technologies, and in particular, to a battery pack temperature adjusting structure, a battery system, and an electric device.

Background

At present, when the battery pack works under the working condition of high temperature or low temperature, the battery pack is usually cooled or heated by adopting the liquid temperature regulating plate, and the edge of the battery pack has a larger temperature difference from the middle, so that the temperature at the middle cannot be cooled in time or the temperature at the edge cannot be heated in time, the problem of bulging and the like of the battery pack can be caused, and the service life of the battery pack is seriously influenced.

Therefore, how to reduce the temperature difference between the edge and the middle of the battery pack and improve the service life of the battery pack is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, a first object of the present utility model is to provide a battery pack temperature adjusting structure capable of reducing a temperature difference between the edges and the middle of the battery pack and improving the life of the battery pack.

A second object of the present utility model is to provide a battery system.

A third object of the present utility model is to provide an electrical device.

In order to achieve the first object, the present utility model provides the following technical solutions:

the utility model provides a battery pack temperature adjusting structure, which comprises a temperature adjusting plate;

the temperature adjusting plate is closely attached to the battery pack to be adjusted in temperature and at least covers the surface of the battery pack to be adjusted in temperature;

the temperature adjusting plate is internally provided with a middle channel and edge channels positioned at two sides of the middle channel, the edge channels are used for introducing fluid medium to circularly flow so as to adjust the temperature of two side edge areas of the surface to be adjusted, and the middle channel is used for introducing fluid medium to circularly flow so as to adjust the temperature of the middle area of the surface to be adjusted;

the edge channel and the middle channel are respectively provided with a turbulent flow protrusion, and the density of the turbulent flow protrusions in one of the edge channel and the middle channel with larger temperature to be regulated is larger than that in the other.

In a specific embodiment, the channel depth of one of the edge channel and the intermediate channel, which needs to be adjusted to be higher in temperature, is smaller than the channel depth of the other.

In another specific embodiment, the density of the turbulence protrusions increases gradually in the direction from the respective inlet to the outlet in the edge channel and the intermediate channel.

In another specific embodiment, the edge channels include a first edge channel and a second edge channel on each side of the intermediate channel;

one end of the first edge channel is provided with a medium inlet, one end of the second edge channel is provided with a medium outlet, one end of the middle channel is communicated with the first edge channel, and the other end of the middle channel is communicated with the second edge channel.

In another specific embodiment, the medium inlet and the medium outlet are located at the same end of the temperature regulating plate.

In another specific embodiment, the density of the spoiler protrusions within the second edge channel is greater than the density of the spoiler protrusions within the first edge channel;

and/or

The flow channel depth of the second edge channel is smaller than that of the first edge channel.

In another specific embodiment, the intermediate channel comprises a first intermediate sub-channel and a second intermediate sub-channel;

the first intermediate sub-channel is arranged in parallel with and adjacent to the first edge channel, the first end of the first intermediate sub-channel is communicated with the first end of the first edge channel, which is provided with a medium inlet, and the second end of the first intermediate sub-channel is communicated with the second end of the first edge channel;

the second middle sub-channel is parallel to and adjacently arranged with the second edge channel, the first end of the second middle sub-channel is communicated with the first end of the second edge channel provided with a medium outlet, and the second end of the second middle sub-channel is communicated with the second end of the second edge channel and the second end of the first middle sub-channel and the second end of the first edge channel.

In another specific embodiment, the number of the temperature regulating plates is at least 1, and the temperature regulating plates are used for cooling the battery pack, and the fluid medium introduced into the temperature regulating plates is a cooling medium.

In another specific embodiment, the number of the temperature regulating plates is at least 1, and the temperature regulating plates are used for heating the battery packs, and the fluid medium introduced into the temperature regulating plates is a heating medium.

In another specific embodiment, the number of the temperature regulating plates is at least 2, at least 1 is a heating plate for heating the battery pack, at least 1 is a cooling plate for cooling the battery pack, the surface to be cooled of the battery pack comprises a first surface and a second surface which are oppositely arranged, the heating plate is closely attached to the first surface, and the cooling plate is closely attached to the second surface;

when the battery core in the battery pack needs to be cooled, a cooling medium is injected into the cooling plate for circulating cooling, and the heating plate stops working;

when the battery core in the battery pack needs to be heated, the cooling plate stops working, and the heating plate is introduced with a heating medium for circulating heating.

In another specific embodiment, when the temperature of the battery cell in the battery pack is greater than a preset temperature value, the cooling plate and the heating plate are both introduced with a cooling medium for circulating cooling;

and/or

When the temperature difference of the two side edge areas of the battery pack is larger than the preset temperature difference, the cooling plate is switched to an outlet for feeding cooling medium and an inlet for feeding cooling medium, or the heating plate is switched to an outlet for feeding heating medium and an inlet for feeding heating medium;

and/or

When the heating value of the electric core in the battery pack is smaller than a preset value, the cooling plate and the heating plate stop working.

In another specific embodiment, the battery pack temperature adjusting structure further comprises a first water nozzle and a second water nozzle;

the first water nozzle is arranged at the inlet of the temperature regulating plate;

the second water nozzle is arranged at the outlet of the temperature regulating plate.

The various embodiments according to the utility model may be combined as desired and the resulting embodiments after such combination are also within the scope of the utility model and are part of specific embodiments of the utility model.

According to the technical scheme, the battery pack temperature adjusting structure is characterized in that the temperature adjusting plate is tightly attached to the battery pack to be adjusted in use, and when the battery pack is required to be cooled under a high-temperature working condition, cooling medium is introduced into the middle channel and the edge channel of the temperature adjusting plate to circularly cool the battery cells in the battery pack. Because the edge channel and the middle channel are respectively provided with the turbulence protrusions, the density of the turbulence protrusions in one of the edge channel and the middle channel with larger temperature adjustment is higher than that of the turbulence protrusions in the other, and the middle area of the battery pack is higher than the temperature required to be raised in the edge area, namely, the density of the turbulence protrusions in the middle runner is higher than that of the turbulence protrusions in the edge channel, the turbulence protrusions can improve the turbulence degree of fluid, so that the heat dissipation efficiency of the middle area of the battery pack is improved, and the temperature difference between the edge and the middle part of the battery pack is reduced.

Similarly, when the battery pack needs to be heated under the low-temperature working condition, heating media are introduced into the middle channel and the edge channel of the temperature regulating plate, and the battery cells in the battery pack are circularly heated. Because the edge channel and the middle channel are respectively provided with the turbulence protrusions, the density of the turbulence protrusions in one of the edge channel and the middle channel with larger temperature adjustment is higher than that of the turbulence protrusions in the other, and the temperature of the edge region of the battery pack is higher than that of the middle region, namely, the density of the turbulence protrusions in the edge channel is higher than that of the turbulence protrusions in the middle flow channel, the turbulence protrusions can improve the turbulence degree of fluid, so that the heating efficiency of the edge region of the battery pack is improved, and the temperature difference between the edge and the middle of the battery pack is reduced.

In order to achieve the second object, the present utility model provides the following technical solutions:

a battery system comprising a battery pack and the battery pack temperature adjustment structure according to any one of the above;

the battery pack temperature adjusting structure is fixed on the battery pack and used for adjusting the temperature of the battery pack.

Because the battery system provided by the utility model comprises the battery pack temperature adjusting structure in any one of the above, the battery pack temperature adjusting structure has the beneficial effects that the battery system disclosed by the utility model comprises.

In order to achieve the third object, the present utility model provides the following technical solutions:

an electric device comprises a device main body and the battery system;

the battery system is used for supplying power to the device main body.

Because the power utilization device provided by the utility model comprises the battery system, the battery system has the beneficial effects that the power utilization device disclosed by the utility model comprises.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without novel efforts for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a battery system according to the present utility model;

FIG. 2 is a schematic view of the internal structure of a temperature regulating plate used as a cooling plate according to the present utility model;

FIG. 3 is a schematic top view of FIG. 2;

FIG. 4 is a schematic view of the internal fluid flow of a thermostat plate for use as a cooling plate in accordance with the present utility model;

FIG. 5 is a schematic view showing the internal structure of a temperature adjusting plate used as a heating plate according to the present utility model;

FIG. 6 is a schematic top view of FIG. 5;

fig. 7 is a schematic view of the internal fluid flow of a temperature regulating plate for use as a heating plate according to the present utility model.

Wherein, in fig. 1-7:

the battery pack 200 includes a temperature adjustment plate 101, a battery pack 200, a middle channel 101a, an edge channel 101b, a first edge channel 101b-1, a second edge channel 101b-2, a turbulence protrusion 101c, a medium inlet 101d, a medium outlet 101e, a first middle sub-channel 101a-1, a second middle sub-channel 101a-2, a guide wall 101f, a guide wall 101g, a battery cell 201, a first water nozzle 102, a second water nozzle 103, and a battery system 1000.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without novel efforts, are intended to fall within the scope of this utility model.

Referring to fig. 1-7, a first aspect of the present utility model discloses a battery pack temperature adjusting structure 100 for reducing temperature difference between the edges and the middle of a battery pack 200 and improving the service life of the battery pack 200.

As shown in fig. 1, the battery pack temperature adjusting structure 100 includes a temperature adjusting plate 101, wherein the temperature adjusting plate 101 is closely attached to a battery pack 200 to be temperature-adjusted, and covers at least a temperature-adjusted surface of the battery pack 200. Specifically, the surface to be temperature-regulated of the battery pack 200 refers to a surface formed by the arrangement direction X of the battery cells 201 and the length Y of the battery cells 201 in the battery pack 200.

As shown in fig. 2, 3, 5 and 6, the temperature adjustment plate 101 is provided therein with a middle passage 101a and edge passages 101b located on both sides of the middle passage 101 a. The edge channels 101b are used for circulating the fluid medium to adjust the temperature of two side edge regions of the surface to be regulated, and the middle channels 101a are used for circulating the fluid medium to adjust the temperature of the middle region of the surface to be regulated. Specifically, the fluid medium may be a cooling medium or a heating medium.

Specifically, it may be: two ends of the middle channel 101a are respectively communicated with edge channels 101b at two sides, the edge channel 101b at one side of the middle channel 101a is used for inputting fluid medium, and the edge channel 101b at the other side is used for outputting fluid medium; it may also be: the intermediate channel 101a and the edge channels 101b on both sides are respectively and independently fed with and discharged from the fluid medium. Specifically, the setting can be performed as needed.

The turbulence protrusions 101c are arranged in the edge channel 101b and the middle channel 101a, and the turbulence protrusions 101c improve the fluid turbulence of the fluid medium in the edge channel 101b and the middle channel 101a, so that the heat exchange capacity is improved, and the heat exchange efficiency of the edge channel 101b and the middle channel 101a is improved. In addition, the provision of the spoiler 101c also improves the strength of the temperature adjusting plate 101.

The density of the turbulence protrusions 101c in one of the edge channel 101b and the middle channel 101a, which needs to be adjusted to a larger temperature, is greater than that of the turbulence protrusions 101c in the other, so that the fluid turbulence of the fluid medium in one of the edge channel 101b and the middle channel 101a, which needs to be adjusted to a larger temperature, is greater than that of the other, the heat exchange capacity of one of the edge channel 101b and the middle channel 101a, which needs to be adjusted to a larger temperature, is improved, the temperature difference between the edge and the middle of the battery pack 200 is reduced, and the service life of the battery pack 200 is prolonged.

It should be noted that, the density of the spoiler protrusions 101c herein refers to the density of the number of spoiler protrusions 101c, and the number density of the spoiler protrusions 101c may be adjusted by setting different sizes of protrusions, or by setting the same sizes of protrusions, and adjusting the number density of the spoiler protrusions 101c by different spacing distances.

In some embodiments, it is desirable to adjust the flow channel depth of one of the edge channel 101b and the middle channel 101a that is at a greater temperature to be less than the flow channel depth of the other. The depth of the flow channel is reduced, the flow velocity is correspondingly increased, and the heat exchange efficiency is enhanced. Because the depth of the one of the edge channel 101b and the middle channel 101a, which needs to be adjusted to be higher in temperature, is shallower, the flow speed is faster, and the heat exchange efficiency is higher, the temperature difference between the edge and the middle of the battery pack 200 is further reduced, and the service life of the battery pack 200 is further improved.

In some embodiments, the density of the turbulence protrusions 101c increases gradually along the respective inlet-to-outlet direction in the edge channel 101b and the middle channel 101 a. The inlet and outlet are set in the direction in which the fluid flows in the edge channel 101b and the intermediate channel 101a in the normal use state of the temperature adjustment plate 101. It will be appreciated that the fluid gradually decreases in heat exchange efficiency as the heat exchange proceeds along the inlet-to-outlet direction, and at this time, the density of the turbulence protrusions 101c is set to gradually increase, increasing the flow rate, thereby increasing the heat exchange efficiency.

Further, as shown in fig. 2, 3, 5 and 6, the edge channel 101b includes a first edge channel 101b-1 and a second edge channel 101b-2 located on both sides of the middle channel 101a, respectively.

One end of the first edge channel 101b-1 is provided with a medium inlet 101d, one end of the second edge channel 101b-2 is provided with a medium outlet 101e, one end of the intermediate channel 101a communicates with the first edge channel 101b-1, and the other end communicates with the second edge channel 101b-2. That is, the first edge channel 101b-1, the intermediate channel 101a and the second edge channel 101b-2 are communicated with each other to constitute a complete circulation channel for circulating the fluid medium. Correspondingly, in the edge channel 101b and the intermediate channel 101a, the fluid medium is introduced into the medium inlet 101d through the respective inlets and outlets, and when the fluid medium is output from the medium outlet 101e, the flow direction of the fluid medium in the edge channel 101b and the intermediate channel 101a is set.

In order to facilitate the connection of the external connection pipe to the fluid medium, the medium inlet 101d and the medium outlet 101e are located at the same end of the temperature adjustment plate 101, and it should be noted that the medium inlet 101d and the medium outlet 101e are not limited to be located at the same end of the temperature adjustment plate 101, but may be located at different ends.

Further, the density of the spoiler protrusions 101c in the second edge channel 101b-2 is greater than the density of the spoiler protrusions 101c in the first edge channel 101 b-1. Because the fluid medium flows through the first edge channel 101b-1 and then flows through the second edge channel 101b-2, and the fluid medium already exchanges heat when flowing through the first edge channel 101b-1, when reaching the second edge channel 101b-2, the heat exchange efficiency is lower than that of the first edge channel 101b-1, so that the density of the turbulence protrusions 101c in the second edge channel 101b-2 is higher than that of the turbulence protrusions 101c in the first edge channel 101b-1, the turbulence of the fluid medium in the second edge channel 101b-2 is increased, the heat exchange efficiency of the fluid medium in the second edge channel 101b-2 is improved, the temperature difference between the edge areas on two sides of the battery pack 200 is reduced, and the consistency of the temperature between the edge areas on two sides of the battery pack 200 is realized.

Further, the flow channel depth of the second edge channel 101b-2 is smaller than that of the first edge channel 101b-1, so that the flow velocity of the fluid medium in the second edge channel 101b-2 is improved, the heat exchange efficiency of the second edge channel 101b-2 is improved, the temperature difference of the edge areas at two sides of the battery pack 200 is further reduced, and the consistency of the temperature of the edge areas at two sides of the battery pack 200 is realized.

In some embodiments, the intermediate channel 101a includes a first intermediate sub-channel 101a-1 and a second intermediate sub-channel 101a-2, the first intermediate sub-channel 101a-1 being disposed parallel and adjacent to the first edge channel 101b-1, and a first end of the first intermediate sub-channel 101a-1 being in communication with a first end of the first edge channel 101b-1 where the media inlet 101d is disposed, and a second end of the first intermediate sub-channel 101a-1 being in communication with a second end of the first edge channel 101 b-1.

The second intermediate sub-channel 101a-2 is disposed parallel to and adjacent to the second edge channel 101b-2, and the first end of the second intermediate sub-channel 101a-2 communicates with the first end of the second edge channel 101b-2 at which the medium outlet 101e is disposed, and the second end of the second intermediate sub-channel 101a-2 communicates with the second end of the second edge channel 101b-2 and with the second end of the first intermediate sub-channel 101a-1 and the second end of the first edge channel 101 b-1.

The arrangement is equivalent to that the first middle sub-channel 101a-1 is connected with the first edge channel 101b-1 in parallel, the second middle sub-channel 101a-2 is connected with the second edge channel 101b-2 in parallel, so that after the fluid medium enters the temperature adjusting plate 101 from the medium inlet 101d, the fluid medium can flow through the first edge channel 101b-1 and the first middle sub-channel 101a-1 at the same time and then flow through the second middle sub-channel 101a-2 and the second edge channel 101b-2 at the same time and then flow through the medium outlet 101e to be output, the circulation efficiency of the fluid medium in the temperature adjusting plate 101 is improved, and the heat exchange efficiency is improved.

In order to facilitate the convergence of the fluid medium flowing out of the first intermediate sub-channel 101a-1 and the first edge channel 101b-1 into the second intermediate sub-channel 101a-2 and the second edge channel 101b-2, the outlet end of the first intermediate sub-channel 101a-1 is arranged to extend from the side walls of the two sides of the first intermediate sub-channel 101a-1 in a direction towards each other to form a guiding wall 101f, the distance between which is the outlet of the first intermediate sub-channel 101a-1, and the guiding wall 101f extends for guiding the fluid medium.

To facilitate the draining of the fluid medium in the second intermediate sub-channel 101a-2, the present utility model discloses that a drainage wall 101g is further provided at the outlet of the second intermediate sub-channel 101a-2 for guiding the fluid medium in the second intermediate sub-channel 101a-2 towards the medium outlet 101e.

It should be noted that, the above-disclosed manner in which the first intermediate sub-channel 101a-1 is connected in parallel with the first edge channel 101b-1 and the second intermediate sub-channel 101a-2 is connected in parallel with the second edge channel 101b-2 is only one specific embodiment of the present utility model, and in practical applications, the first edge channel 101b-1, the first intermediate sub-channel 101a-1, the second intermediate sub-channel 101a-2, and the second edge channel 101b-2 may be sequentially connected in series, that is, the fluid medium sequentially flows through the first edge channel 101b-1, the first intermediate sub-channel 101a-1, the second intermediate sub-channel 101a-2, and the second edge channel 101b-2, which may, of course, be also configured in other manners of connection.

It should be noted that, the 2 channels including the first intermediate sub-channel 101a-1 and the second intermediate sub-channel 101a-2 in the intermediate channel 101a are only one embodiment of the present utility model, and in practical applications, the intermediate channel 101a may include 3 or more than 3 channels.

In some embodiments, the number of the temperature adjustment plates 101 is at least 1, and the fluid medium introduced into the temperature adjustment plates 101 is a cooling medium for cooling the battery pack 200, that is, the temperature adjustment plates 101 are cooling plates, as shown in fig. 2 and 3, and correspondingly, the density of the turbulence protrusions 101c in the edge channel 101b is smaller than the density of the turbulence protrusions 101c in the middle channel 101 a.

It should be noted that the number of cooling plates may be 1, and the cooling plates may be closely attached to the surface to be temperature-adjusted of the battery pack 200 through the heat-conducting medium, and of course, the number of cooling plates may also be 2, and the number of the surface to be temperature-adjusted is also 2, and the 2 cooling plates are arranged face to face, and the 2 cooling plates are arranged in one-to-one correspondence with the 2 surfaces to be temperature-adjusted, and are closely attached through the heat-conducting medium.

In other embodiments, the number of the temperature adjustment plates 101 is at least 1, and the fluid medium introduced into the temperature adjustment plates 101 is a heating medium for heating the battery pack 200, that is, the temperature adjustment plates 101 are heating plates, as shown in fig. 5 and 6, and the density of the turbulence protrusions 101c in the edge channels 101b is greater than the density of the turbulence protrusions 101c in the middle channels 101a in the corresponding pairs.

It should be noted that, the number of heating plates may be 1, and the heating plates may be closely attached to the surface to be temperature-adjusted of the battery pack 200 through the heat-conducting medium, and of course, the number of heating plates may also be 2, and the number of the surface to be temperature-adjusted is also 2, and the heating plates are arranged face to face, and the 2 heating plates are arranged in one-to-one correspondence with the 2 surfaces to be temperature-adjusted, and are closely attached through the heat-conducting medium.

In other embodiments, as shown in fig. 1, the number of the temperature adjustment plates 101 is at least 2, at least 1 is a heating plate for heating the battery pack 200, at least 1 is a cooling plate for cooling the battery pack 200, the surface to be cooled of the battery pack 200 includes a first surface and a second surface which are oppositely disposed, the heating plate is closely attached to the first surface, and the cooling plate is closely attached to the second surface.

When the battery pack 200 is in a high-temperature working condition and the battery cells 201 in the battery pack 200 need to be cooled, a cooling medium is injected into the cooling plate for circulating cooling, and the circulation flow of fluid in the cooling plate is shown by an arrow in fig. 4, so that the heating plate stops working. The heating plate stops working, which means that the heating plate does not inject fluid medium to exchange heat.

When the battery pack 200 is in a low-temperature working condition and the battery cells 201 in the battery pack 200 need to be heated, the cooling plate stops working, fluid flows through the heating plate, and the heating plate is introduced into a heating medium for circulation heating as shown by an arrow in fig. 7. The cooling plate stops working, which means that the cooling plate does not inject fluid medium to exchange heat.

Further, when the temperature of the battery cell 201 in the battery pack 200 is greater than the preset temperature value, the cooling plate and the heating plate are both introduced with cooling medium for circulation cooling. The preset temperature is a critical value at which thermal runaway occurs or is about to occur. At this time, the cooling plate and the heating plate are both introduced with a cooling medium to perform circulating cooling, so that the cooling efficiency of the battery pack 200 is improved, and the safety of the battery pack 200 is improved.

When the temperature difference between the two side edge regions of the battery pack 200 is greater than the preset temperature difference, taking the cooling plate for cooling the battery pack 200 as an example, at this time, the cooling plate is switched to the outlet for feeding the cooling medium and the inlet for feeding the cooling medium so as to balance the temperatures of the two side edge regions of the battery pack 200. The preset temperature difference is specifically set as required.

Taking the heating plate for heating the battery pack 200 as an example, the heating plate is switched to an outlet for feeding the heating medium and an inlet for feeding the heating medium so as to balance the temperature of the edge regions at both sides of the battery pack 200.

When the heat generation amount of the battery cell 201 in the battery pack 200 is smaller than the preset value, the cooling plate and the heating plate stop working. At this time, the battery cell 201 discharges at a low rate, the heat productivity is small, and the battery cell 201 can dissipate heat naturally, so that the cost is saved.

This embodiment has the following advantages: (1) Under the working conditions of high temperature and low temperature, the temperature difference between the battery cells 201 at the two side edge areas and the battery cells 201 at the middle area of the battery pack 200 can be reduced; (2) The double-plate form of the cooling plate and the heating plate can avoid the failure of the single plate, thereby avoiding the risk of thermal management failure and reducing the risk of thermal runaway of the battery cell 201; (3) The temperature regulating plates 101 are distributed on the first surface and the second surface of the battery pack 200, so that the rigidity of the battery pack 200 can be improved, the deformation resistance of the battery cell 201 is enhanced, and the structural failure risk is reduced.

In some embodiments, the battery pack temperature adjusting structure 100 further includes a first water nozzle 102 and a second water nozzle 103, the first water nozzle 102 is installed at the medium inlet 101d of the temperature adjusting plate 101, and the second water nozzle 103 is installed at the medium outlet 101e of the temperature adjusting plate 101. The first water nozzle 102 and the second water nozzle 103 are arranged so as to be convenient for external connection pipelines.

A second aspect of the present utility model provides a battery system 1000 including a battery pack 200 and a battery pack temperature adjustment structure 100 as in any of the embodiments described above.

The battery pack temperature adjusting structure 100 is fixed to the battery pack 200 for adjusting the temperature of the battery pack 200.

Since the battery system 1000 provided by the present utility model includes the battery pack temperature adjustment structure 100 according to any one of the embodiments, the battery pack temperature adjustment structure 100 has the advantages that the battery system 1000 disclosed by the present utility model includes.

A third aspect of the present utility model provides an electric device including a device main body and the battery system 1000 in any one of the above embodiments.

The battery system 1000 is electrically connected to the apparatus main body for supplying power to the apparatus main body.

Because the power utilization device provided by the utility model comprises the battery system 1000 in any one of the embodiments, the battery system 1000 has the beneficial effects that the power utilization device disclosed by the utility model comprises.

Specifically, the electric device may be an electric automobile, an electric ship, a space plane, or the like.

For convenience of description, only parts related to the present utility model are shown in the accompanying drawings. Embodiments and features of embodiments in this application may be combined with each other without conflict.

It should be appreciated that "system," "apparatus," "unit" and/or "module" as used in this application is one method for distinguishing between different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.

Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Flowcharts are used in this application to describe the operations performed by systems according to embodiments of the present application. It should be appreciated that the front-end or back-end operations are not necessarily performed in order exactly. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these processes.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery pack temperature regulating structure (100), characterized by comprising a temperature regulating plate (101);

the temperature adjusting plate (101) is closely attached to the battery pack (200) to be adjusted in temperature and at least covers the surface to be adjusted in temperature of the battery pack (200);

an intermediate channel (101 a) and edge channels (101 b) positioned at two sides of the intermediate channel (101 a) are arranged in the temperature regulating plate (101), the edge channels (101 b) are used for introducing fluid medium to circularly flow so as to regulate the temperatures of two side edge regions of the surface to be regulated, and the intermediate channel (101 a) is used for introducing fluid medium to circularly flow so as to regulate the temperatures of the intermediate regions of the surface to be regulated;

the edge channel (101 b) and the middle channel (101 a) are respectively provided with a turbulence protrusion (101 c), and the density of the turbulence protrusions (101 c) in one of the edge channel (101 b) and the middle channel (101 a) with larger temperature adjustment is higher than that of the turbulence protrusions (101 c) in the other.

2. The battery pack temperature adjustment structure (100) according to claim 1, wherein the flow channel depth of one of the edge channel (101 b) and the intermediate channel (101 a) requiring adjustment of the temperature is smaller than the flow channel depth of the other.

3. The battery pack temperature regulating structure (100) according to claim 1, wherein the density of the turbulence protrusions (101 c) in the edge channels (101 b) and the middle channels (101 a) gradually increases along the respective inlet-to-outlet directions.

4. The battery pack temperature regulation structure (100) of claim 1, wherein the edge channel (101 b) includes a first edge channel (101 b-1) and a second edge channel (101 b-2) located on both sides of the intermediate channel (101 a), respectively;

one end of the first edge channel (101 b-1) is provided with a medium inlet (101 d), one end of the second edge channel (101 b-2) is provided with a medium outlet (101 e), one end of the middle channel (101 a) is communicated with the first edge channel (101 b-1), and the other end is communicated with the second edge channel (101 b-2).

5. The battery pack temperature regulating structure (100) according to claim 4, wherein the medium inlet (101 d) and the medium outlet (101 e) are located at the same end of the temperature regulating plate (101).

6. The battery pack temperature adjustment structure (100) of claim 4, wherein the density of the turbulence protrusions (101 c) in the second edge channel (101 b-2) is greater than the density of the turbulence protrusions (101 c) in the first edge channel (101 b-1);

and/or

The second edge channel (101 b-2) has a flow channel depth that is less than the flow channel depth of the first edge channel (101 b-1).

7. The battery pack temperature regulation structure (100) of claim 4 wherein the intermediate channel (101 a) comprises a first intermediate sub-channel (101 a-1) and a second intermediate sub-channel (101 a-2);

the first intermediate sub-channel (101 a-1) is arranged in parallel and adjacent to the first edge channel (101 b-1), and a first end of the first intermediate sub-channel (101 a-1) is communicated with a first end of the first edge channel (101 b-1) where the medium inlet (101 d) is arranged, and a second end of the first intermediate sub-channel (101 a-1) is communicated with a second end of the first edge channel (101 b-1);

the second middle sub-channel (101 a-2) is arranged in parallel with and adjacent to the second edge channel (101 b-2), a first end of the second middle sub-channel (101 a-2) is communicated with a first end of the second edge channel (101 b-2) where the medium outlet (101 e) is arranged, and a second end of the second middle sub-channel (101 a-2) is communicated with a second end of the second edge channel (101 b-2) and is communicated with a second end of the first middle sub-channel (101 a-1) and a second end of the first edge channel (101 b-1).

8. The battery pack temperature regulating structure (100) according to claim 1, wherein the number of the temperature regulating plates (101) is at least 1, and the temperature regulating plates are used for cooling the battery pack (200), and the fluid medium introduced into the temperature regulating plates (101) is a cooling medium.

9. The battery pack temperature adjusting structure (100) according to claim 1, wherein the number of the temperature adjusting plates (101) is at least 1, and the temperature adjusting plates are used for heating the battery pack (200), and the fluid medium introduced into the temperature adjusting plates (101) is a heating medium.

10. The battery pack temperature adjusting structure (100) according to claim 1, wherein the number of the temperature adjusting plates (101) is at least 2, at least 1 is a heating plate for heating the battery pack (200), at least 1 is a cooling plate for cooling the battery pack (200), the surface to be cooled of the battery pack (200) comprises a first surface and a second surface which are oppositely arranged, the heating plate is closely attached to the first surface, and the cooling plate is closely attached to the second surface;

when the battery cells (201) in the battery pack (200) need to be cooled, a cooling medium is injected into the cooling plate for circulating cooling, and the heating plate stops working;

when the electric core (201) in the battery pack (200) needs to be heated, the cooling plate stops working, and the heating plate is introduced with a heating medium for cyclic heating.

11. The battery pack temperature adjustment structure (100) of claim 10, wherein when the temperature of the battery cells (201) in the battery pack (200) is greater than a preset temperature value, the cooling plate and the heating plate are both introduced with a cooling medium for circulation cooling;

and/or

When the temperature difference of the two side edge areas of the battery pack (200) is larger than a preset temperature difference, the cooling plate is switched to an outlet inlet cooling medium and an inlet outlet cooling medium, or the heating plate is switched to an outlet inlet heating medium and an inlet outlet heating medium;

and/or

When the heating value of the electric core (201) in the battery pack (200) is smaller than a preset value, the cooling plate and the heating plate stop working.

12. The battery pack temperature adjustment structure (100) of any one of claims 1-11, further comprising a first water nozzle (102) and a second water nozzle (103);

the first water nozzle (102) is arranged at the inlet of the temperature regulating plate (101);

the second water nozzle (103) is arranged at the outlet of the temperature regulating plate (101).

13. A battery system (1000) comprising a battery pack (200) and a battery pack temperature regulating structure (100) according to any one of claims 1-12;

the battery pack (200) temperature adjusting structure is fixed on the battery pack (200) and is used for adjusting the temperature of the battery pack (200).

14. An electric device characterized by comprising a device body and the battery system (1000) according to claim 13;

the battery system (1000) is configured to supply power to the device body.