Temperature adjusting system for battery pack, battery pack and electric device
By setting a pressure groove with a localized necking structure on the temperature regulating plate, the problem of temperature non-uniformity in the battery pack is solved, the temperature uniformity of individual battery cells is achieved, and the system complexity and cost are reduced.
Patent Information
- Application Number
- CN202520253019.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-02-18
AI Technical Summary
In existing battery pack temperature control systems, the different number of adjacent battery cells on each temperature control plate leads to temperature unevenness, which affects the performance, safety, and lifespan of the battery pack.
A pressure groove with a localized necking structure is set on the temperature regulating plate to reduce the cross-section of the flow channel, thereby limiting the flow rate and forming a throttling device to achieve temperature uniformity of each battery cell and avoid adding additional individual throttling devices.
By directly setting the throttling structure on the temperature regulating plate, the complexity and manufacturing cost of the temperature regulating system are reduced, while ensuring the temperature uniformity of the battery cells and improving the performance and safety of the battery pack.
Smart Images
Figure CN223598826U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of batteries, and more particularly to a temperature regulating system for a battery pack, a battery pack and a vehicle. BACKGROUND
[0002] A battery pack refers to a battery unit formed by assembling a plurality of battery cells (which can also be referred to as batteries or battery cells) through a specific electrical connection manner (such as series connection, parallel connection or series-parallel connection combination) and being equipped with a corresponding management system (such as a battery management system BMS), a temperature regulating (particularly cooling) system, a housing, etc. The battery pack can be used to provide power or energy storage for vehicles, energy storage systems, portable electronic devices, etc.
[0003] A temperature regulating system for a battery pack can be used to regulate the temperature of the batteries in the battery pack and thus ensure that the batteries work within a safe temperature range. In a known temperature regulating system, a plurality of temperature regulating plates are arranged parallel to and spaced apart from each other, each temperature regulating plate being in heat exchange with each battery cell adjacent thereto.
[0004] However, if the number of battery cells adjacent to each temperature regulating plate is different, the temperature uniformity of each battery cell cannot be guaranteed, which can adversely affect the performance, safety and service life of the battery pack. UTILITY MODEL CONTENT
[0005] In view of this, the purpose of the present disclosure is to provide a temperature regulating system for a battery pack, a battery pack and a vehicle, wherein the temperature regulating system can more uniformly cool each battery cell in the battery pack, thereby achieving temperature balance of each battery cell and thus improving the performance, safety and service life of the battery pack.
[0006] According to a first aspect, the present disclosure provides a temperature regulating system for a battery pack, comprising a plurality of temperature regulating plates, each temperature regulating plate having a longitudinal direction, a width direction perpendicular to the longitudinal direction, and a thickness direction perpendicular to the longitudinal direction and the width direction, each temperature regulating plate having at least one flow channel extending along the longitudinal direction thereof, and each temperature regulating plate comprising an inflow section for inflow of a temperature regulating fluid into the temperature regulating plate and a heat exchange section capable of heat exchange with a battery cell in the battery pack, characterized in that at least one temperature regulating plate of the plurality of temperature regulating plates is provided with a pressure groove on the inflow section, such that the total cross section of the at least one flow channel is reduced at the pressure groove.
[0007] Therefore, in the temperature control system according to the present disclosure, the total cross section (area) of the at least one temperature control plate provided with the pressure groove can be reduced due to the pressure groove, so that the fluid flow into the temperature control plate provided with the pressure groove is smaller than the fluid flow into the temperature control plate without the pressure groove, and thus the heat exchange capacity of the temperature control plate provided with the pressure groove is smaller than the heat exchange capacity of the temperature control plate without the pressure groove. Therefore, in the temperature control system, a local necking structure is added to the at least one temperature control plate itself, i.e. a throttling device is provided, so that the temperature difference of the individual battery cells when being temperature controlled can be reduced or eliminated as much as possible to ensure the temperature uniformity of the individual battery cells without the need to add additional separate parts. Therefore, the temperature control system according to the present disclosure has a reduced structural complexity and a reduced manufacturing cost.
[0008] In some embodiments, the plurality of temperature control plates are arranged parallel to and spaced apart from each other, and the temperature control plates of the plurality of temperature control plates which are on the end sides of the battery pack and which are in thermal connection with the associated battery cells on one side only are each provided with the pressure groove. Thereby, a temperature control system with a simple arrangement is achieved, in which only the temperature control plates which are on the end sides of the battery pack and which are in thermal connection with the associated battery cells on one side only need to be provided with the pressure groove, so that the temperature uniformity of the individual battery cells can be achieved.
[0009] In some embodiments, the pressure groove extends in the width direction of the respective temperature control plate. Thereby, on the one hand, the cross section of each flow channel of the respective temperature control plate is uniformly reduced, and on the other hand, the simple manufacture of the temperature control plate provided with the pressure groove is facilitated.
[0010] In some embodiments, the inflow section of the at least one temperature control plate is configured linearly, and the pressure groove is provided on the respective linear inflow section. Thereby, the simple manufacture of the pressure groove on the respective temperature control plate can be facilitated.
[0011] In some embodiments, the plurality of temperature control plates are each configured as a serpentine cold plate, so that each temperature control plate comprises a linear inflow section, a curved heat exchange section and a linear outflow section. The throttling device according to the present disclosure is particularly suitable for use in such a temperature control system with serpentine cold plates.
[0012] In some embodiments, each temperature control plate is provided with a plurality of flow channels extending in the longitudinal direction thereof, and the pressure groove is configured such that the cross section of all flow channels of the respective temperature control plate is reduced at the pressure groove. Thereby, the cross section of each flow channel of the respective temperature control plate is uniformly reduced, so that a more uniform heat exchange of the battery cells is facilitated.
[0013] In some embodiments, the pressure groove is formed on the respective temperature control plate by means of a stamping process. Thereby, the pressure groove can be manufactured simply and cost-advantageously.
[0014] In some embodiments, the at least one of the plurality of temperature regulating plates is identically configured to the rest of the temperature regulating plates except for the pressure groove. Thereby, the temperature regulating plates can be simply and cost-advantageously manufactured.
[0015] In some embodiments, the temperature regulating system further comprises an input pipe and an output pipe; the input pipe is in fluid communication with the flow channels of the plurality of temperature regulating plates through a plurality of first connecting plates, the inflow section of each temperature regulating plate is in fluid communication with a corresponding one of the first connecting plates; the output pipe is in fluid communication with the flow channels of the plurality of temperature regulating plates through a plurality of second connecting plates, the outflow section of each temperature regulating plate is in fluid communication with a corresponding one of the second connecting plates. Thereby, the fixation and connection of the input pipe and the output pipe and the temperature regulating plates can be simply achieved.
[0016] In some embodiments, the first connecting plates and the second connecting plates connected to the same temperature regulating plate are configured as a one-piece common connecting plate. Thereby, a more compact temperature regulating system can be achieved.
[0017] According to a second aspect, the disclosure provides a battery pack comprising a plurality of battery cells arranged in a matrix and the temperature regulating system in the above embodiments.
[0018] In some embodiments, the plurality of temperature regulating plates are arranged in parallel and spaced apart from each other; the temperature regulating plates of the plurality of temperature regulating plates which are on the end side of the battery pack and which are thermally connected to the associated battery cells on one side only are respectively adjacent to only one row of battery cells and are provided with the pressure groove, and the rest of the temperature regulating plates are respectively adjacent to two rows of battery cells and are not provided with the pressure groove.
[0019] In some embodiments, the battery cells are respectively configured as cylindrical battery cells, and the plurality of temperature regulating plates are respectively configured as serpentine cold plates.
[0020] According to a third aspect, the disclosure provides an electrically powered device comprising the battery pack in the above embodiments.
[0021] In some embodiments, the electrically powered device is an electrically drivable motor vehicle.
[0022] The battery pack and the electrically powered device according to the disclosure also correspondingly have the same advantages as the temperature regulating system according to the disclosure, which will not be repeated here.
[0023] It can be seen that, in the temperature regulating system according to the present disclosure, the corresponding battery pack and the power consuming device, by the structure of the local necking stamping pressure groove, the cross-sectional area of the flow channel of the corresponding temperature regulating plate is reduced, the flow of the corresponding temperature regulating plate is limited to play the throttling effect and thus the heat exchange power of the corresponding temperature regulating plate is limited. Therefore, the temperature difference of the battery monomers in different arrangement (distribution) areas when being temperature regulated can be reduced or eliminated as much as possible to ensure the temperature uniformity of each battery monomer. Therefore, by the throttling structure directly added on the temperature regulating plate body, the additional separate throttling member can be saved, and thus the complexity and manufacturing cost of the temperature regulating system can be reduced. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure will be described in detail below with reference to the drawings. In the drawings:
[0025] Figure 1 shows a schematic perspective view of a battery pack according to an embodiment of the present disclosure;
[0026] Figure 2 shows a schematic perspective view of a temperature regulating plate of a temperature regulating system for a battery pack in Figure 1 ;
[0027] Figure 3 shows a schematic perspective view of a part of a temperature regulating system for a battery pack according to an embodiment of the present disclosure;
[0028] Figure 4 shows a schematic top view of a part of the temperature regulating system of Figure 3 ;
[0029] Figure 5 shows a partial enlarged view of Figure 4 ;
[0030] Figure 6 shows a schematic front view of a part of the temperature regulating system of Figure 3 ;
[0031] Figure 7 shows a schematic perspective view of a part of an exemplary temperature regulating system for a battery pack according to the prior art;
[0032] Figure 8 shows a partial enlarged view of Figure 7 . DETAILED DESCRIPTION
[0033] The present disclosure will now be described with reference to the attached figures. Various examples of the disclosure are illustrated in the drawings and are described below. It will of course be appreciated that the disclosure can be embodied in many different forms and should not be deemed limited to the examples described below; in fact, these examples are provided so that this disclosure will be thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should also be appreciated that the examples disclosed herein can be combined in various ways, providing more additional examples.
[0034] It should be understood that like reference numerals in all figures represent like elements. In the figures, the dimensions of certain features can be exaggerated for clarity.
[0035] It should be understood that the language used in the specification has been principally selected for readability and instructional purposes and can not have been selected to delineate or circumscribe the inventive subject matter. That said, all terms used in the specification are intended to be given their broadest interpretation consistent with the specification as a whole, unless a more restrictive interpretation is explicitly provided herein. For simplicity and / or clarity, well-known functions or constructions can not be described in detail.
[0036] As used in the specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. As used in the specification and the appended claims, the terms "comprises", "comprising", and "having" are inclusive and allow for elements or steps other than those listed to be present. As used in the specification and the appended claims, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used in the specification and the appended claims, the terms "between" and "between about" shall be interpreted as "between about and." As used in the specification and the appended claims, the term "between about X and Y" means "between about X and about Y," and the term "from about X to Y" means "from about X to about Y."
[0037] In the specification, when an element is referred to as being "on", "attached" to, "connected" to, "coupled" to, or "contacting" another element, it can be directly on, attached to, connected to, coupled to, or contacting the other element or one or more intervening elements can also be present. In contrast, when an element is referred to as being "directly on", "directly attached" to, "directly connected" to, "directly coupled" to, or "directly contacting" another element, there are no intervening elements present. In the specification, when a feature is arranged "adjacent" to another feature, it can mean that the feature has a portion that overlaps the adjacent feature or a portion that is above or below the adjacent feature.
[0038] In the description, spatially relative terms such as "upper", "lower", "left", "right", "front", "back", "horizontal", "vertical", and the like can be used herein for ease of description to describe one element's or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device described is turned over in use, a relative term such as "below" or "above" can be used to describe a relationship that is reversed from that shown in the figures. The device can be oriented in any direction in addition to those specifically mentioned above, and terms such as "above", "below", "up", and "down" are used with the full understanding that when a device is turned over, those relative terms change accordingly.
[0039] As mentioned before, the battery pack can comprise a temperature regulating system. In a temperature regulating system according to the prior art, a plurality of temperature regulating plates, in particular serpentine cold plates, can be arranged parallel and spaced apart from each other, each temperature regulating plate can cool the battery cells adjacent to it. In this case, for example as shown in Figure 1 the first temperature regulating plate 210 and the last temperature regulating plate 210 can only be adjacent to one row of battery cells 100, while the intermediate temperature regulating plates 210 between the first and the last temperature regulating plate can be adjacent to two rows of battery cells 100. Thus, the number of battery cells 100 adjacent to the first temperature regulating plate 210 or the last temperature regulating plate 210 is less than the number of battery cells 100 adjacent to the intermediate temperature regulating plates 210. Thus, if the heat exchanging capacity of each temperature regulating plate 210 is the same, the individual battery cells 100 cannot be uniformly heat exchanged, in particular the battery cells 100 adjacent to the first and the last cold plate 210 cannot be heat exchanged as the other battery cells 100.
[0040] To ensure that the individual battery cells 100 are uniformly heat exchanged, according to the prior art, for a specific temperature regulating plate 210 adjacent to a smaller number of battery cells 100, such as the first temperature regulating plate 210 or the last temperature regulating plate 210, a separate throttling device can be provided. For example as shown in Figure 7 and Figure 8 a separate throttling plate 300 can be provided. The throttling plate 300 can comprise at least one throttling hole 310. The at least one throttling hole 310 can be in fluid communication with the individual flow channels of the specific temperature regulating plate 210, and the total cross section of the at least one throttling hole 310 can be smaller than the total cross section of the individual flow channels 2101 of the specific temperature regulating plate 210. Thus, the fluid flow into the specific temperature regulating plate 210 provided with the throttling plate 300 can be smaller than the fluid flow into the temperature regulating plate 210 without the throttling plate 300, and thus the heat exchanging capacity of the specific temperature regulating plate 210 provided with the throttling plate 300 can be smaller than the heat exchanging capacity of the temperature regulating plate 210 without the throttling plate 300. Thus, the heat exchanging capacity of the specific temperature regulating plate 210 adjacent to a smaller number of battery cells 100 can be smaller than the heat exchanging capacity of the temperature regulating plate 210 adjacent to a larger number of battery cells 100, and thus the individual battery cells 100 can be uniformly heat exchanged.
[0041] However, such an additional separate throttling device not only increases the complexity of the temperature regulating system and the battery pack, but also increases the manufacturing cost thereof.
[0042] Based on the above understanding, the present disclosure provides a throttling device directly added on the temperature regulating plate itself, so that an additional separate throttling device does not have to be added. Therefore, the complexity of the temperature regulating system and the battery pack can be reduced and the manufacturing cost thereof can be reduced by using the throttling device according to the present disclosure.
[0043] The throttling device for the temperature regulating system of the battery pack according to the present disclosure can be used in any temperature regulating system having a plurality of temperature regulating plates and in which the number of battery cells adjacent to each temperature regulating plate is different.
[0044] The battery pack according to the present disclosure can be used in, but is not limited to, an electric device such as a vehicle, a ship or an aircraft. The battery pack according to the present disclosure can be used to constitute a power supply system of the electric device.
[0045] The electric device according to the present disclosure can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric aircraft toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.
[0046] Hereinafter, for the convenience of explanation, a battery pack 10 according to an embodiment of the present disclosure will be described.
[0047] Please refer to Figure 1 , Figure 1 A schematic perspective view of the battery pack 10 according to the embodiment of the present disclosure is shown. The battery pack 10 can not only serve as an operating power source of a vehicle, but also serve as a driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle. The battery pack 10 can include a plurality of battery cells 100, for example, twelve battery cells 100 in Figure 1 These battery cells 100 can be arranged in a matrix, for example, arranged as four rows of battery cells in Figure 1 In addition, in order to regulate the temperature of each battery cell 100 in the battery pack 10, the battery pack 10 can include a temperature regulating system 200.
[0048] The temperature control system 200 can include a plurality of temperature control plates 210 for heat exchange with the battery cells 100, an input pipe 231 for inputting a temperature control fluid, in particular a coolant (a liquid mixed with water and ethylene glycol in a certain ratio), and an output pipe 232 for outputting the temperature control fluid. The plurality of temperature control plates 210 can be arranged in parallel to and spaced apart from each other, so that each row of battery cells 100 can be placed between the corresponding two adjacent temperature control plates 210. In this case, the first and last temperature control plates 210 perform heat exchange with only one row of battery cells 100 adjacent thereto, while the two temperature control plates 210 in the middle perform heat exchange with two rows of battery cells 100 adjacent thereto. The number of battery cells 100 adjacent to each temperature control plate 210 is different, so it is necessary to change the heat exchange capacity of the temperature control plate 210 according to the number of battery cells 100, so that the temperature of each battery cell 100 can be balanced.
[0049] Reference is made to Figure 2 , Figure 2 Fig. 10 shows a schematic perspective view of a temperature control plate 210 of the temperature control system for a battery pack in Figure 1 Each temperature control plate 210 can have a longitudinal direction, a width direction perpendicular to the longitudinal direction, and a thickness direction perpendicular to the longitudinal direction and the width direction. Each temperature control plate 210 can have at least one flow channel 2101, in particular a plurality of flow channels 2101, extending along the longitudinal direction thereof. Each temperature control plate 210 can include an inflow section 211 for inflow of the temperature control fluid into the temperature control plate 210, a heat exchange section 212 capable of heat exchange with the battery cells 100 in the battery pack 10, and an outflow section 213 for outflow of the temperature control fluid from the temperature control plate 210. Furthermore, it can be seen that the inflow section 211 and the outflow section 213 of the temperature control plate 210 can be located on the same side of the temperature control plate 210 in the longitudinal direction, for example by means of a reversing pipe element (not shown).
[0050] According to some embodiments of the present disclosure, reference is made to Figure 1 , and further reference is made to Figures 3 to 6 ( Figure 3 Fig. 10 shows a schematic perspective view of a temperature control system 200 for a battery pack according to embodiments of the present disclosure, Figure 4 Fig. 11 shows a schematic top view of a part of the temperature control system 200 of Figure 3 Fig. 12 shows a partial enlarged view of Figure 5 Fig. 13 shows a schematic perspective view of a temperature control plate 210 of the temperature control system 200 of Figure 4 Fig. 14 shows a schematic perspective view of a temperature control plate 210 of the temperature control system 200 of Figure 6 Fig. 15 shows a schematic perspective view of a temperature control plate 210 of the temperature control system 200 of Figure 3Fig. 1 shows a schematic front view of a part of a temperature control system 200 according to the present disclosure (cf. Fig. 2 showing a schematic front view of a part of a temperature control system 200 according to the present disclosure), providing a temperature control system 200 for a battery pack 10 comprising a plurality of temperature control plates 210. Each temperature control plate 210 has a longitudinal direction, a width direction perpendicular to the longitudinal direction, and a thickness direction perpendicular to the longitudinal direction and the width direction, each temperature control plate 210 has at least one flow channel 2101 extending along its longitudinal direction, and each temperature control plate 210 comprises an inflow section 211 for inflow of a temperature control fluid into the temperature control plate 210 and a heat exchange section 212 capable of heat exchange with a battery cell 100 in the battery pack 10. At least one temperature control plate of the plurality of temperature control plates 210 is provided with a pressure groove 240 on the inflow section 211, such that the total cross section (area) of the at least one flow channel 2101 is reduced at the pressure groove 240. That is, the total cross section (area) of the at least one flow channel 2101 is reduced after the inflow of the fluid into the respective temperature control plate and before the heat exchange section.
[0051] Due to the reduction of the total cross section of the at least one flow channel 2101 by the pressure groove 240, the flow rate of the fluid into the temperature control plate 210 provided with the pressure groove 240 can be smaller than the flow rate of the fluid into the temperature control plate 210 without the pressure groove 240, such that the heat exchange capacity of the temperature control plate 210 provided with the pressure groove 240 can be smaller than the heat exchange capacity of the temperature control plate 210 without the pressure groove 240.
[0052] Here, the pressure groove 240 constitutes a kind of local constriction, which can cause a bottleneck effect in the flow channel, i.e. a phenomenon that the fluid flow is restricted and the flow rate is significantly reduced due to the local narrowing of the flow channel. Thus, the pressure groove 240 implements a kind of throttling device. Moreover, since the pressure groove 240 is provided on the temperature control plate 210 itself, it is not necessary to add an additional separate throttling member. Thus, the temperature control system and the battery pack according to the present disclosure can have a lower complexity and a lower manufacturing cost.
[0053] According to some embodiments of the present disclosure, optionally with reference to Figure 1 , the plurality of temperature control plates 210 can be arranged parallel to and spaced apart from each other, and the temperature control plates of the plurality of temperature control plates 210 which are on the end sides of the battery pack 10 and which are thermally connected to the associated battery cells 100 on one side only (here: the first and the last temperature control plate) can each be provided with a pressure groove 240. Thereby, a kind of temperature control system with a simple arrangement can be achieved, in which each battery cell 100 can be uniformly heat exchanged by reducing the heat exchange capacity of the first and the last temperature control plate which are heat exchanged with a smaller number of battery cells 100.
[0054] According to some embodiments of the present disclosure, optionally with reference to Figure 3 and Figure 6The pressure groove 240 can extend in the width direction of the corresponding temperature adjusting plate 210. In this way, the cross sections of the flow channels 2101 of the corresponding temperature adjusting plate 210 can be uniformly reduced, which is conducive to more uniform heat exchange of the battery monomers. On the other hand, it is also conducive to the simple manufacture of the temperature adjusting plate 210 with the pressure groove 240.
[0055] According to some embodiments of the present disclosure, optionally, referring to Figures 4 to 6 The inflow section 211 of the temperature adjusting plate 210 provided with at least the pressure groove 240 is configured in a straight line, and the pressure groove 240 is arranged on the corresponding straight-line inflow section 211. In this way, the simple manufacture of the pressure groove 240 on the corresponding temperature adjusting plate 210 can be facilitated.
[0056] According to some embodiments of the present disclosure, optionally, referring to Figures 1 to 4 The plurality of temperature adjusting plates 210 can be respectively configured as serpentine cold plates, so that each temperature adjusting plate 210 includes a straight-line inflow section 211, a curved heat exchange section 212, and a straight-line outflow section 213. The serpentine cold plate is a high-efficiency and reliable thermal management solution in the battery pack temperature adjusting system, and the serpentine flow channel can ensure that the cooling fluid uniformly covers each area of the battery pack, thereby achieving efficient heat exchange and temperature equalization. The throttling device according to the present disclosure is particularly suitable for use in such a temperature adjusting system with a serpentine cold plate.
[0057] According to some embodiments of the present disclosure, optionally, referring to Figure 2 Each temperature adjusting plate 210 can be provided with a plurality of flow channels 2101 extending in the longitudinal direction thereof, and the pressure groove 240 can be configured such that the cross sections of all the flow channels 2101 of the corresponding temperature adjusting plate 210 are reduced at the pressure groove. In this way, the cross sections of the flow channels 2101 of the corresponding temperature adjusting plate 210 can be uniformly reduced, which is conducive to more uniform heat exchange of the battery monomers.
[0058] According to some embodiments of the present disclosure, optionally, the pressure groove 240 can be formed on the corresponding temperature adjusting plate 210 by stamping. The specific size of the pressure groove stamped in this way can be obtained according to actual requirements, for example, by simulation calculation. In addition, the pressure groove structure can be integrally stamped when the temperature adjusting plate is stamped as a whole, without the need to add additional processes. In this way, the pressure groove 240 can be simply and cost-effectively manufactured.
[0059] According to some embodiments of the present disclosure, optionally, referring to Figure 1 The at least one temperature adjusting plate of the plurality of temperature adjusting plates 210 is configured identically to the remaining temperature adjusting plates except for the pressure groove 240. In this way, the temperature adjusting plate 210 can be simply and cost-effectively manufactured.
[0060] According to some embodiments of the present disclosure, optionally, referring to Figure 1 ,Figure 3 and Figure 6 The temperature control system 200 can further comprise an input duct 231 and an output duct 232. The input duct 231 can be in fluid communication with the flow channels of the plurality of temperature control plates 210 via a plurality of first connection plates 220, the inflow section 211 of each temperature control plate 210 being in fluid communication with a respective one of the first connection plates 220. The output duct 232 can be in fluid communication with the flow channels of the plurality of temperature control plates 210 via a plurality of second connection plates 220, the outflow section 213 of each temperature control plate 210 being in fluid communication with a respective one of the second connection plates 220. Thereby, a simple realization of the fixation and connection of the input and output ducts and the individual temperature control plates can be achieved.
[0061] According to some embodiments of the present disclosure, optionally with reference to Figure 1 , Figure 3 and Figure 6 The first and second connection plates connected with the same temperature control plate 210 can be configured as one-piece common connection plates 220. This can be achieved by using a reversing pipe element (not shown) as described above, wherein the inflow section 211 and the outflow section 213 of the temperature control plate 210 can be located on the same side of the temperature control plate 210 in the longitudinal direction. Thereby, a more compact structure of the temperature control system can be achieved.
[0062] According to some embodiments of the present disclosure, the present disclosure further provides a battery pack 10, which can comprise a plurality of battery cells 100 arranged in a matrix and a temperature control system 200 as described above.
[0063] According to some embodiments of the present disclosure, optionally with reference to Figure 1 The plurality of temperature control plates 210 can be arranged parallel and spaced apart from each other, and the temperature control plates of the plurality of temperature control plates 210 which are on the end sides of the battery pack 10 and are thermally connected to the associated battery cells 100 on one side only, i.e. the first and the last temperature control plate, can each be adjoined to only one row of battery cells 100 and be provided with the pressure grooves 240, and the remaining temperature control plates, i.e. the intermediate temperature control plates between the first and the last temperature control plate, can each be adjoined to two rows of battery cells 100 and be free of the pressure grooves 240. In this arrangement, only the two temperature control plates on the end sides need to be provided with the pressure grooves 240 in order to achieve a uniform heat exchange for the individual battery cells, whereby a cost-advantageous temperature control system for the battery pack can be achieved.
[0064] According to some embodiments of the present disclosure, optionally with reference to Figure 1 The battery cells 100 can each be configured as cylindrical, in particular round cylindrical, battery cells, and the plurality of temperature control plates 210 can each be configured as a serpentine cold plate. In such a battery pack, the throttle device according to the present disclosure is particularly suitable for use in order to reduce structural complexity and reduce manufacturing costs.
[0065] According to some embodiments of the present disclosure, the present disclosure further provides an electrically powered device comprising the battery pack as described above. In particular, the electrically powered device is an electrically powered motor vehicle.
[0066] According to some embodiments of the present disclosure, in particular with reference to Figure 1 and Figures 3 to 6 The present disclosure provides a temperature regulating system 200 for a battery pack 10 comprising a plurality of temperature regulating plates 210. Each temperature regulating plate 210 has a longitudinal direction, a width direction perpendicular to the longitudinal direction, and a thickness direction perpendicular to the longitudinal direction and the width direction, each temperature regulating plate 210 has at least one flow channel 2101 extending along its longitudinal direction, and each temperature regulating plate 210 comprises an inflow section 211 for inflow of a temperature regulating fluid into the temperature regulating plate 210 and a heat exchange section 212 capable of heat exchange with a battery cell 100 in the battery pack 10. The plurality of temperature regulating plates 210 are arranged parallel and spaced apart from each other, and the inflow sections 211 of a first temperature regulating plate and a last temperature regulating plate of the plurality of temperature regulating plates 210 are provided with a stamped-out pressure groove 240 such that the total cross section of the respective flow channel of the first temperature regulating plate and the last temperature regulating plate is reduced at the pressure groove, respectively.
[0067] By the stamped-out local pressure groove structure, the cross-sectional area of the flow channel of the respective temperature regulating plate is reduced, thereby acting as a throttle. Thereby, the flow rate of the respective temperature regulating plate is limited, thereby limiting the heat exchange power of the respective temperature regulating plate. Thereby, the temperature difference between the first and last row of battery cells adjacent to the first and last temperature regulating plate and the temperature of the other rows of battery cells is avoided to be too large, thereby ensuring the temperature uniformity of the battery cells. This local necking structure directly added on the temperature regulating plate itself does not require additional parts, and therefore, its production is simple and cost-advantageous. Thus, the temperature regulating system according to the present disclosure and the battery pack having the same have reduced structural complexity and reduced production costs.
[0068] While exemplary embodiments of the present disclosure have been described, it is to be understood that the exemplary embodiments of the present disclosure are susceptible to various modifications and alternative forms well known to those skilled in the art without departing from the spirit and scope of the present disclosure. Therefore, all modifications and alterations to cover within the scope and spirit of the present disclosure should be considered. The present disclosure is defined by the appended claims and their equivalents.
Claims
1. A temperature regulating system for a battery pack, comprising a plurality of temperature regulating plates (210), each temperature regulating plate (210) having a longitudinal direction, a width direction perpendicular to the longitudinal direction, and a thickness direction perpendicular to the longitudinal direction and the width direction, each temperature regulating plate (210) having at least one flow channel (2101) extending along its longitudinal direction, and each temperature regulating plate (210) comprising an inflow section (211) for inflow of a temperature regulating fluid into the temperature regulating plate (210) and a heat exchange section (212) capable of heat exchange with a battery cell (100) in the battery pack (10), characterized in that, At least one of the plurality of temperature regulating plates (210) is provided with a pressure groove (240) on the inflow section (211), so that the total cross section of the at least one flow channel is reduced at the pressure groove.
2. The tempering system of claim 1, wherein, The plurality of temperature regulating plates (210) are arranged in parallel and spaced apart from each other, and the temperature regulating plates of the plurality of temperature regulating plates (210) which are on the end side of the battery pack (10) and are unilaterally in thermal connection with the associated battery cell (100) are respectively provided with the pressure groove (240).
3. The tempering system of claim 1, wherein, The pressure groove (240) extends in the width direction of the corresponding temperature regulating plate (210).
4. The tempering system of claim 1, wherein, The inflow section (211) of the at least one temperature regulating plate is configured to be linear, and the pressure groove (240) is arranged on the corresponding linear inflow section (211).
5. The tempering system of claim 1, wherein, The plurality of temperature regulating plates (210) are respectively configured to be serpentine cold plates, so that each temperature regulating plate (210) includes a linear inflow section (211), a curved heat exchange section (212), and a linear outflow section (213).
6. The tempering system of claim 1, wherein, Each temperature regulating plate (210) is provided with a plurality of flow channels extending along the longitudinal direction thereof, and the pressure groove (240) is configured such that the cross section of all flow channels (2101) of the corresponding temperature regulating plate (210) is reduced at the pressure groove.
7. The tempering system of claim 1, wherein, The pressure groove (240) is formed on the corresponding temperature regulating plate (210) by stamping.
8. The tempering system of claim 1, wherein, The at least one of the plurality of temperature regulating plates (210) is configured identically to the rest of the temperature regulating plates except for the pressure groove (240).
9. The tempering system of claim 1, wherein, The temperature regulating system (200) further comprises an input pipe (231) and an output pipe (232); The input pipe (231) is in fluid communication with the flow channels of the plurality of temperature regulating plates (210) through a plurality of first connecting plates, and the inflow section (211) of each temperature regulating plate (210) is in fluid communication with a corresponding one of the first connecting plates; The output pipe (232) is in fluid communication with the flow channels of the plurality of temperature regulating plates (210) through a plurality of second connecting plates, and the outflow section (213) of each temperature regulating plate (210) is in fluid communication with a corresponding one of the second connecting plates.
10. The tempering system of claim 9, wherein, The first connecting plate and the second connecting plate connected to the same temperature regulating plate (210) are configured as a one-piece common connecting plate (220).
11. A battery pack comprising a plurality of battery cells (100) arranged in a matrix, characterized in that The battery pack (10) further comprises the temperature regulating system (200) according to any one of claims 1 to 10.
12. The battery pack of claim 11, wherein, The plurality of temperature regulating plates (210) are arranged in parallel and spaced apart from each other; the temperature regulating plates of the plurality of temperature regulating plates (210) which are on the end side of the battery pack (10) and are unilaterally in thermal connection with the associated battery cell (100) are respectively adjacent to only one row of battery cells (100) and are provided with the pressure groove (240), and the rest of the temperature regulating plates are respectively adjacent to two rows of battery cells (100) and are not provided with the pressure groove (240).
13. The battery pack of claim 11, wherein, The battery cells (100) are respectively configured to be cylindrical battery cells, and the plurality of temperature regulating plates (210) are respectively configured to be serpentine cold plates.
14. An electrical device, comprising: The electric device comprises the battery pack according to any one of claims 11 to 13.
15. The powered device of claim 14, wherein, The electric device is an electrically drivable motor vehicle. The electric device is an electrically drivable motor vehicle.