Battery module and energy storage system

Abstract

The utility model provides a battery module and energy storage system.The battery module comprises a shell, a battery monomer and a temperature adjusting device, the temperature adjusting device comprises a first temperature control assembly, a second temperature control assembly and a coil pipe assembly, and the coil pipe assembly is arranged between the first temperature control assembly and the second temperature control assembly; the first temperature control assembly comprises a deformation bag and a first lifting device, the first lifting device can move up and down in the vertical direction, the second temperature control assembly comprises another deformation bag and a second lifting device, the second lifting device can move up and down in the vertical direction, and the deformation bag can deform along with lifting of the first lifting device or the second lifting device. In the direction from left to right, the cross section of the deformation bag can be deformed to obliquely extend upwards or obliquely extend downwards. Through the arrangement of the temperature adjusting device and the two deformable deformation bags in the temperature adjusting device, differential temperature adjustment on the two sides of the temperature adjusting device can be achieved, and therefore temperature balance of the space where the battery monomers are located is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery module and an energy storage system. Background Art

[0002] In the prior art, two or more battery cells are usually combined to form a battery module to improve the installation and disassembly efficiency of the battery cells in the energy storage system. Since two or more battery cells are in the same space, the heat generated during charging and discharging will accumulate, resulting in a high temperature inside the battery module, affecting the normal operation of the battery cells.

[0003] In order to adjust the temperature of the battery cells in the battery module, the prior art will set a refrigerant coil between adjacent battery cells in the same battery module, and the refrigerant coil is connected to a temperature control device such as an air conditioner, so as to adjust the working temperature of the battery cells and keep them in a relatively stable working environment. In the above scheme, the refrigerant coil has the same effect on the temperature regulation on both sides, but due to the differences in the battery cells on both sides, the heat generated during operation is usually different, so that the temperature in the space where the battery cells on both sides of the refrigerant coil are located is in different states, and it is easy to have a high temperature on one side and a low temperature on the other side, and it is impossible to ensure that all battery cells are at a suitable working temperature. In addition, when a battery cell in the battery module is in an isolated state, the existing temperature control structure will still perform the same temperature control on the space where it is located, and it is impossible to perform targeted temperature control on the space where a single battery cell is located, which is easy to cause energy waste. Utility Model Content

[0004] In view of this, the utility model aims to provide a battery module and an energy storage system to solve the problem in the prior art that the temperature of the space where each battery cell is located in the battery module is uneven and the temperature of the space where a single battery cell is located cannot be controlled.

[0005] In order to solve the above problems, the utility model discloses a battery module, comprising:

[0006] A housing, the housing being used to form a first accommodation space, the first accommodation space being used to arrange at least a battery cell;

[0007] A battery cell, wherein there are more than two battery cells, and the battery cells are arranged in the first accommodation space of the housing;

[0008] A temperature regulating device, wherein the temperature regulating device is disposed in the first accommodation space of the housing, and a temperature regulating device is disposed between at least two adjacent battery cells;

[0009] The temperature regulating device includes a first temperature control component, a second temperature control component and a coil component. The coil component is arranged between the first temperature control component and the second temperature control component. The first temperature control component is arranged on the left side of the coil component, and the second temperature control component is arranged on the right side of the coil component. The coil component can circulate temperature control refrigerant. The first temperature control component includes a first auxiliary temperature control component. The first auxiliary temperature control component includes a deformation capsule and a first lifting device. The first lifting device can move up and down in the vertical direction. The first lifting device is connected to the deformation capsule of the first auxiliary temperature control component. The second temperature control component includes a second auxiliary temperature control component. The second auxiliary temperature control component includes another deformation capsule and a second lifting device. The second lifting device is connected to the deformation capsule of the second auxiliary temperature control component. The second lifting device can move up and down in the vertical direction. The deformation capsule has a hollow capsule cavity filled with a heat-conducting medium. The deformation capsule can be deformed as the first lifting device or the second lifting device is lifted and lowered. In the direction from left to right, the cross-section of the deformation capsule can be deformed to extend obliquely upward or obliquely downward.

[0010] Furthermore, the first lifting device includes a first lifting member and a second lifting member, the first lifting member is connected to the left side of the deformation capsule in the first temperature control component, and the second lifting member is connected to the right side of the deformation capsule in the first temperature control component.

[0011] Furthermore, the first lifting member moves upward relative to the second lifting member, and the cross-section of the deformation sac in the first temperature control component is deformed from left to right to extend obliquely downward; the second lifting member moves upward relative to the first lifting member, and the cross-section of the deformation sac in the first temperature control component is deformed from left to right to extend obliquely upward.

[0012] Furthermore, the first auxiliary temperature control component includes a first lifting component, which has a lifting device that can be lifted and lowered, including a first lifting device and a second lifting device, the first lifting device is connected to the bottom end of the first lifting member, and the second lifting device is connected to the bottom end of the second lifting member.

[0013] Furthermore, the second lifting device includes a third lifting member and a fourth lifting member, the third lifting member is connected to the right side of the deformation capsule in the second temperature control component, and the fourth lifting member is connected to the left side of the deformation capsule in the second temperature control component.

[0014] Furthermore, the third lifting member moves upward relative to the fourth lifting member, and the cross-section of the deformation bag in the second temperature control component is deformed from left to right to extend obliquely upward; the fourth lifting member moves upward relative to the third lifting member, and the cross-section of the deformation bag in the second temperature control component is deformed from left to right to extend obliquely downward.

[0015] Furthermore, the second auxiliary temperature control component includes a second lifting component, which has a lifting device that can be lifted and lowered, including a third lifting device and a fourth lifting device, the third lifting device is connected to the bottom end of the third lifting member, and the fourth lifting device is connected to the bottom end of the fourth lifting member.

[0016] Furthermore, the first auxiliary temperature control component and the second auxiliary temperature control component respectively include a plurality of deformation capsules arranged in sequence from bottom to top, and the deformation capsules are rectangular in an undeformed state, and the deformation capsules have two oppositely arranged first capsule walls, two oppositely arranged second capsule walls and two oppositely arranged third capsule walls, and the deformation capsules are connected to the first lifting device or the second lifting device through the third capsule walls.

[0017] Furthermore, for the deformable capsule in a deformed state, the minimum angle K between the first capsule wall and the third capsule wall is 55°-65°, and the maximum ratio between the width W of the first capsule wall and the height H of the third capsule wall is 1.5-2.5:1.

[0018] The utility model also discloses an energy storage system, which includes the battery module as described above.

[0019] Compared with the prior art, the battery module and energy storage system described in the utility model have the following advantages:

[0020] 1) Through the temperature adjustment device and the two deformable deformation capsules therein, differential temperature adjustment can be achieved on both sides, thereby achieving temperature balance in the space where each battery cell in the battery module is located, avoiding the problem in the prior art of synchronous temperature adjustment on both sides resulting in excessively high or low temperatures in the space where some battery cells are located;

[0021] 2) By setting two independently deformable deformation capsules, the energy storage system can perform differentiated temperature control on the battery cells in operation and the battery cells not in operation in the energy storage system, thereby improving the temperature regulation efficiency and reducing the temperature regulation cost;

[0022] 3) When the temperature control device is not in operation, the deformation of the deformation capsule can be used to control the temperature of the space where two adjacent battery cells are located, thereby avoiding the problem of too rapid temperature rise in the space where individual battery cells are located, reducing the frequency of starting the temperature control device, reducing the temperature adjustment cost, and improving the safety of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural diagram of the battery module according to an embodiment of the utility model;

[0024] Figure 2A side view of the battery module according to an embodiment of the utility model;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the AA part;

[0026] Figure 4 for Figure 3 A partial enlarged schematic diagram of the B part;

[0027] Figure 5 This is a rear view of the battery module according to the embodiment of the utility model after the rear plate is removed;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the battery module according to the embodiment of the utility model after the shell is removed;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the temperature regulating device according to an embodiment of the utility model;

[0030] Figure 8 This is a schematic diagram of the explosion structure of the temperature regulating device according to an embodiment of the utility model;

[0031] Fig. 9 This is a schematic diagram of the exploded structure of the first temperature control component in the embodiment of the utility model;

[0032] Fig.10 This is a schematic diagram of the exploded structure of the second temperature control component in the embodiment of the utility model;

[0033] Fig.11 This is a schematic diagram of the temperature adjustment device according to an embodiment of the utility model in a first state;

[0034] Fig.12 This is a schematic diagram of the temperature adjustment device in the second state according to an embodiment of the utility model;

[0035] Fig.13 It is a schematic diagram of the three-dimensional structure of the deformation capsule described in the embodiment of the utility model;

[0036] Fig.14 It is a side view of the deformation capsule in a deformed state described in an embodiment of the utility model.

[0037] Description of reference numerals:

[0038] 100, battery module; 110, housing; 120, back plate; 200, battery cell; 300, temperature adjustment device; 310, first temperature control component; 311, first side wall; 312, second side wall; 313, deformation capsule; 3131, first capsule wall; 3132, second capsule wall; 3133, third capsule wall; 3134, fixing part; 3135, capsule cavity; 314, first lifting device; 3141, first lifting member; 3142, second lifting member; 315, first lifting component; 3151, first lifting device; 3152, first lifting rod; 3153, second lifting device; 3154 , second push rod; 316, first upper sealing plate; 317, first front sealing plate; 320, second temperature control assembly; 321, third side wall; 322, fourth side wall; 324, second lifting device; 3241, third lifting member; 3242, fourth lifting member; 325, second lifting assembly; 3251, third lifting device; 3252, third push rod; 3253, fourth lifting device; 3254, fourth push rod; 326, second upper sealing plate; 327, second front sealing plate; 330, coil assembly; 331, refrigerant coil; 332, third upper sealing plate; 333, third front sealing plate; 340, rear sealing plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The specific embodiments described herein are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0040] A battery module and an energy storage system according to an embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0041] Example 1

[0042] This embodiment provides a battery module, such as Figure 1-Figure 14 As shown, including:

[0043] A housing 110, wherein the housing 110 is used to form a first accommodation space, and the first accommodation space is at least used to arrange a battery cell 200;

[0044] A battery cell 200, wherein there are two or more battery cells 200, and the battery cells 200 are disposed in the first accommodation space of the housing 110;

[0045] A temperature regulating device 300 , wherein the temperature regulating device 300 is disposed in the first accommodation space of the housing 110 , and a temperature regulating device 300 is disposed between at least two adjacent battery cells 200 ;

[0046] The temperature regulating device 300 includes a first temperature control component 310, a second temperature control component 320 and a coil component 330. The coil component 330 is arranged between the first temperature control component 310 and the second temperature control component 320. The first temperature control component 310 is arranged on the left side of the coil component 330, and the second temperature control component 320 is arranged on the right side of the coil component 330. The coil component 330 can circulate temperature control refrigerant. The first temperature control component 310 includes a first auxiliary temperature control component. The first auxiliary temperature control component includes a deformation capsule 313 and a first lifting device 314. The first lifting device 314 can move up and down in the vertical direction. The first lifting device 314 and the first auxiliary temperature control The second temperature control component 320 includes a second auxiliary temperature control component, and the second auxiliary temperature control component includes another deformation capsule 313 and a second lifting device 324. The second lifting device 324 is connected to the deformation capsule 313 of the second auxiliary temperature control component. The second lifting device 324 can move up and down in the vertical direction. The deformation capsule 313 has a hollow capsule cavity 3135, and the capsule cavity 3135 is filled with a heat-conducting medium. The deformation capsule 313 can be deformed as the first lifting device 314 or the second lifting device 324 is lifted and lowered. In the direction from left to right, the cross-section of the deformation capsule 313 can be deformed to extend obliquely upward or obliquely downward.

[0047] In the present application, by setting the deformation capsule 313 in the temperature regulating device 300 and switching between the two inclined forms of the deformation capsule 313, the heat-conducting medium in the capsule cavity 3135 forms an overall flow cycle in the deformation capsule 313 or a local cycle near the capsule wall under the action of "heat rise and cold drop" to transfer heat or block heat transfer. During heat transfer, the heat-conducting medium will form different circulation heat transfer efficiencies according to the temperature difference between the left and right sides of the capsule cavity 3135. When the temperature difference is small, the heat transfer efficiency is low, and when the temperature difference is large, the heat transfer efficiency is high, so that the first temperature control component 310 and the second temperature control component 320 obtain different temperature control effects, which is beneficial to the temperature balance of the space where each battery cell 200 is located in the internal space of the battery module 100, so as to ensure that all the batteries inside it are at a reasonable operating temperature. The coil assembly 330 in the prior art usually performs uniform temperature control on both sides, which can effectively reduce the temperature of the battery module 100. The problem of uneven temperature in the space where the battery cell 200 is located is prone to occur. The temperature regulating device 300 in this embodiment can significantly improve this problem. In addition, in the prior art, since the coil assembly 330 is in direct contact with the space where the battery cell 200 is located, the temperature difference on the contact surface is large, which makes the condensation water problem more serious. In this application, the temperature regulating device 300 is set to reduce the temperature difference between the contact surface of the temperature regulating device 300 and the space where the battery cell 200 is located, and the amount of condensation water is effectively reduced. The structure and method for condensation water discharge are no longer within the scope of improvement of this application and will not be elaborated here. When blocking heat transfer, the coil assembly 330 can be prevented from controlling the temperature of the isolated battery cell 200 or the space where the battery cell 200 is not installed or the space where the battery cell 200 is not involved in operation, which can effectively reduce the load required for temperature regulation, reduce energy consumption, and save operating costs. It should be noted that the coil assembly 330 is connected to a temperature control device on the outside of the battery module 100. The temperature control device is used to transport the refrigerant required for cooling or heating to the coil assembly 330. The temperature control device can be an air conditioner, a chiller, etc., which is not limited here.

[0048] For the sake of simplicity in the following description, from left to right, the cross section of the deformation capsule 313 is tilted upward as the first state (see FIG. Fig.12 The state of the deformation capsule 313 on the left side of the coil assembly 330 is shown), and the state in which the cross section of the deformation capsule 313 is tilted downward is recorded as the second state (as shown in the attached Fig.11 The state of the left deformation capsule 313 is shown), from which it can be considered that the attachment Fig.12 The deformation capsule 313 on the right side of the middle coil assembly 330 is in the second state. Fig.11 The deformation capsule 313 on the right side of the middle coil assembly 330 is in the first state.

[0049] Attach Fig.12Taking the deformation capsule 313 in the first state on the left side as an example, the corresponding functions of the single deformation capsule 313 and its capsule cavity 3135 are described.

[0050] Case 1: If the temperature of the space where the battery cell 200 on the left side is located is relatively higher than the temperature on the side of the coil assembly 330, the heat-conducting medium in the bladder cavity 3135 near the side of the space where the battery cell 200 on the left side is located will rise due to the heat, and move along the upper first bladder wall 3131 to the highest point near the side of the coil assembly 330, and the heat-conducting medium in the bladder cavity 3135 near the side of the coil assembly 330 will fall due to the cold, and move along the lower first bladder wall 3131 to the lowest point near the side of the space where the battery cell 200 on the left side is located, so that the heat-conducting medium forms an overall flow circulation in the deformation bladder 313 to promote heat transfer between the coil assembly 330 and the battery cell 200 on the left side, so that the temperature adjustment device 300 can cool the space where the battery cell 200 on the left side is located through the coil assembly 330;

[0051] Case 2: If the temperature of the space where the left battery cell 200 is located is relatively lower than the temperature of the coil assembly 330, the heat-conducting medium in the bladder cavity 3135 near the space where the left battery cell 200 is located will cool down, forming a local medium flow near the space where the left battery cell 200 is located in the bladder cavity 3135, and tends to gather at the lowest point of the space where the left battery cell 200 is located in the bladder cavity 3135. The heat-conducting medium in the bladder cavity 3135 near the coil assembly 330 will rise due to the heat, and the heat-conducting medium in the bladder cavity 3135 near the coil assembly 330 will rise due to the heat. A local medium flow is formed near one side of the coil assembly 330 and tends to gather at the highest point of the capsule cavity 3135 close to one side of the coil assembly 330; thereby, a local medium flow is formed on both sides of the deformation capsule 313, so that a certain medium flow dead zone is formed in the middle of the deformation capsule 313, forming a dead zone that blocks heat transfer, delaying the temperature exchange between the coil assembly 330 and the space where the battery cell 200 on its left side is located, thereby preventing the temperature regulating device 300 from regulating the temperature of the space where the battery cell 200 on its left side is located through the coil assembly 330.

[0052] For the attached Fig.11 For the deformation capsule 313 in the second state on the left side, the heat transfer medium also has similar scenarios as Case 1 and Case 2 when in the flow state of "heat rise and cold drop" effect, which will not be described in detail in this article.

[0053] Similarly, for the attached Fig.11 The right side is in the first state, Fig.12 For the deformation capsule 313 in the second state on the middle right side, the heat-conducting medium in its capsule cavity 3135 also has scenarios similar to those in Case 1 and Case 2 under the flow state of "heat rise and cold drop" effect, which will not be described in detail in this article.

[0054] In this case, by switching the left and right deformation capsules 313 between the first state and the second state respectively, it is possible to achieve temperature regulation of the space where the battery cells 200 on both sides of the temperature regulation device 300 are located, or to achieve temperature regulation of the space where the battery cells 200 on one side are located, thereby effectively improving the temperature regulation efficiency and balance and reducing the temperature control cost.

[0055] The first lifting device 314 includes a first lifting member 3141 and a second lifting member 3142. The first lifting member 3141 is connected to the left side of the deformation capsule 313 in the first temperature control component 310, and the second lifting member 3142 is connected to the right side of the deformation capsule 313 in the first temperature control component 310. As the first lifting member 3141 or the second lifting member 3142 moves upward, the deformation capsule 313 in the first temperature control component 310 can be driven to deform to form a first state or a second state.

[0056] The second lifting device 324 includes a third lifting member 3241 and a fourth lifting member 3242. The third lifting member 3241 is connected to the right side of the deformation capsule 313 in the second temperature control component 320, and the fourth lifting member 3242 is connected to the left side of the deformation capsule 313 in the second temperature control component 320. As the third lifting member 3241 or the fourth lifting member 3242 moves upward, the deformation capsule 313 in the second temperature control component 320 can be driven to deform to form a first state or a second state.

[0057] The deformation capsule 313 is approximately in the shape of a cuboid in the undeformed state, and has two first capsule walls 3131 arranged oppositely, two second capsule walls 3132 arranged oppositely, and two third capsule walls 3133 arranged oppositely. The first capsule wall 3131 and the second capsule wall 3132 are flexible walls, have a certain deformation extension ability, and can be made of rubber materials in the prior art. For the third capsule wall 3133, since the deformation capsule 313 needs to be connected to the first lifting device 314 or the second lifting device 324, the third capsule wall 3133 can be a rigid wall plate, or a rigid plate is embedded in the flexible wall, which can provide support for the deformation of the deformation capsule 313 while ensuring the connection strength. The present application preferably connects the deformation capsule 313 to the first lifting device 314 or the second lifting device 324 through the third capsule wall 3133, or uses the rigid support of the third capsule wall 3133 to set a corresponding fixing portion 3134 at the third capsule wall 3133 for connection.

[0058] Wherein, the first lifting member 3141 moves upward relative to the second lifting member 3142 (such as the first lifting member 3141 rises, the second lifting member 3142 remains in place or descends to the original position), and the cross-section of the deformation capsule 313 in the first temperature control component 310 is deformed from left to right to extend obliquely downward (second state). The second lifting member 3142 moves upward relative to the first lifting member 3141 (such as the second lifting member 3142 rises, the first lifting member 3141 remains in place or descends to the original position), and the cross-section of the deformation capsule 313 in the first temperature control component 310 is deformed from left to right to extend obliquely upward (first state). Wherein, the original position can be understood as the initial position of lifting, which can be lifted upward from the initial position and can only be lowered to the initial position. Please refer to the attached Figure 3 , 4 Status shown.

[0059] Correspondingly, the third lifting member 3241 moves upward relative to the fourth lifting member 3242 (e.g., the third lifting member 3241 rises, and the fourth lifting member 3242 remains in place or descends to the original position), and the cross section of the deformation capsule 313 in the second temperature control component 320 is deformed from left to right to extend obliquely upward (first state). The fourth lifting member 3242 moves upward relative to the third lifting member 3241 (e.g., the fourth lifting member 3242 rises, and the third lifting member 3241 remains in place or descends to the original position), and the cross section of the deformation capsule 313 in the second temperature control component 320 is deformed from left to right to extend obliquely downward (second state).

[0060] In order to avoid ambiguity or misunderstanding, with respect to the relative movement between the first lifting member 3141 and the second lifting member 3142, and between the third lifting member 3241 and the fourth lifting member 3242, in the present application, the rise of the first lifting member 3141 or the third lifting member 3241 must be accompanied by the lifting member on the other side remaining in place or descending to its original position, so that the first auxiliary temperature control component or the second auxiliary temperature control component can only be adjusted in displacement or deformation at a relatively small height.

[0061] The first lifting member 3141, the second lifting member 3142, the third lifting member 3241 and the fourth lifting member 3242 may be a square frame, a flat plate, etc., or may be a rectangular frame, a flat plate, etc., as shown in the attached figure. Fig. 9 , Attachment Fig.10 Multiple poles shown.

[0062] Regarding the connection between the deformation capsule 313 and the first lifting device 314 or the second lifting device 324, fixing parts 3134 are respectively provided on both sides of the deformation capsule 313, and the fixing parts 3134 and the first lifting device 314 or the second lifting device 324 are connected by at least one of a clamping, bonding, and a fastener fixing connection, which can be specifically referred to in the following forms:

[0063] Form 1: If the first lifting member 3141, the second lifting member 3142, the third lifting member 3241 and the fourth lifting member 3242 are in the form of a square frame, claws are set on both sides of the deformation capsule 313 to be stuck in the corresponding square frame, or the two sides of the deformation capsule 313 are placed in the square frame; or the square frame is provided with hanging holes, and corresponding hooks can be set on both sides of the deformation capsule 313 to hang the deformation capsule 313 on the square frame; at the same time, the third capsule wall 3133 can also be connected to the square frame by fasteners.

[0064] Form 2: If the first lifting member 3141, the second lifting member 3142, the third lifting member 3241 and the fourth lifting member 3242 are in the form of flat plates, adhesive layers can be set on both sides of the deformation capsule 313 and bonded to the flat plates through the adhesive layers; at the same time, the third capsule wall 3133 can also be connected to the flat plates through fasteners.

[0065] Form 3: If the first lifting member 3141, the second lifting member 3142, the third lifting member 3241 and the fourth lifting member 3242 are attached Fig. 9 and attached Fig.10 The vertical pole form shown in the figure can adopt the claw clamping or hook mounting form in form 1, or it can be Fig.13 As shown, through openings are provided on both sides of the deformation capsule 313, and the vertical rods are provided in the through openings.

[0066] The setting of the deformation capsule 313 can be a whole large capsule, but considering the flow efficiency of the heat-conducting medium, the preferred solution of the present application is that the first auxiliary temperature control component and the second auxiliary temperature control component respectively include a plurality of deformation capsules 313 arranged in sequence from bottom to top. In combination with the connection between the deformation capsule 313 and the first lifting device 314 or the second lifting device 324, the plurality of deformation capsules 313 can be arranged in an up-and-down stacking form and connected to the first lifting device 314 or the second lifting device 324 one by one. Preferably, for the deformation capsule 313 in the deformation state, the minimum angle K that can be achieved between the first capsule wall 3131 and the third capsule wall 3133 is 55°-65°, and the maximum ratio that can be achieved between the width W of the first capsule wall 3131 and the height H of the third capsule wall 3133 is 1.5-2.5:1. Therefore, by limiting the ratio of the angle K and the width W to the height H, on the one hand, when the deformation capsule 313 reaches the final deformation state, the capsule cavity 3135 (such as the attached Fig.11, Attachment Fig.12 As shown in the figure, a relatively narrow and moderately inclined space can be presented to facilitate the flow of the heat-conducting medium under the action of “heat rise and cold drop”, and on the other hand, excessive deformation of the deformation capsule 313 can be avoided to ensure the normal service state of the deformation capsule 313.

[0067] As a preferred embodiment of the present application, the heat-conducting medium filled in the capsule cavity 3135 is carbon dioxide or nitrogen. The heat-conducting medium can be a gas at normal temperature and pressure, or a gas at other pressure states as needed. On the one hand, this setting can provide a better flow state, so that the first auxiliary temperature control component and the second auxiliary temperature control component can provide a better heat transfer effect or heat blocking effect. On the other hand, in the event of an accident such as puncture or extreme high temperature damage to the deformation capsule 313, the leakage of carbon dioxide or nitrogen will not cause unnecessary pollution, and can also provide a certain inhibitory effect on the combustion of electrical components.

[0068] For the up and down movement of the first lifting device 314, the first auxiliary temperature control component includes a first lifting component 315, the first lifting component 315 has a lifting device that can be lifted and lowered, and the lifting device of the first lifting component 315 is connected to the bottom end of the first lifting device 314, and is used to drive the first lifting device 314 to move up and down. The first lifting component 315 can adopt a conventional hydraulic or pneumatic lifting device, a mechanical lifting device, a spiral lifting device, etc. in the prior art.

[0069] The first lifting device 314 includes a first lifting member 3141 and a second lifting member 3142. The first lifting member 3141 is arranged close to the left side, and the second lifting member 3142 is arranged close to the right side. The first jacking assembly 315 is also provided with corresponding jacking devices, including a first jacking device 3151 and a second jacking device 3153. The first jacking device 3151 is connected to the bottom end of the first lifting member 3141, and the second jacking device 3153 is connected to the bottom end of the second lifting member 3142.

[0070] Attach Fig.11 As shown, the first push rod 3152 of the first lifter 3151 is lifted upward and drives the first lifting member 3141 to move upward, so that the deformation capsule 313 of the first temperature control component 310 is in the second state. At this time, the second lifter 3153 is in a non-lifted state.

[0071] Attach Fig.12 For example, the second push rod 3154 of the second lifter 3153 is lifted upward, and drives the second lifting member 3142 to move upward, so that the deformation bag 313 of the first temperature control component 310 is in the first state. At this time, the first lifter 3151 is in a non-lifted state.

[0072] For the up and down movement of the second lifting device 324, the second auxiliary temperature control component includes a second lifting component 325, and the second lifting component 325 has a lifting device that can be lifted and lowered, and the lifting device of the second lifting component 325 is connected to the bottom end of the second lifting device 324, and is used to drive the second lifting device 324 to move up and down. The second lifting component 325 can adopt a conventional hydraulic or pneumatic lifting device, a mechanical lifting device, a spiral lifting device, etc. in the prior art.

[0073] The second lifting device 324 includes a third lifting member 3241 and a fourth lifting member 3242. The third lifting member 3241 is arranged close to the right side, and the fourth lifting member 3242 is arranged close to the left side. The second jacking assembly 325 is also provided with corresponding jacking devices, including a third jacking device 3251 and a fourth jacking device 3253. The third jacking device 3251 is connected to the bottom end of the third lifting member 3241, and the fourth jacking device 3253 is connected to the bottom end of the fourth lifting member 3242.

[0074] Attach Fig.11 As shown, the third push rod 3252 of the third lifter 3251 is lifted upward, and drives the third lifting member 3241 to move upward, so that the deformation bag 313 of the second temperature control component 320 is in the first state. At this time, the fourth lifter 3253 is in a non-lifted state.

[0075] Attach Fig.12 For example, the fourth push rod 3254 of the fourth lifter 3253 is lifted upward, and drives the fourth lifting member 3242 to move upward, so that the deformation bag 313 of the second temperature control component 320 is in the second state. At this time, the third lifter 3251 is in a non-lifted state.

[0076] In addition, for the first temperature control component 310, it also includes a first side wall 311, a second side wall 312, a first upper sealing plate 316 and a first front sealing plate 317. The first side wall 311, the second side wall 312, the first upper sealing plate 316 and the first front sealing plate 317 are arranged to form a second accommodating space with an opening on the rear side, and the first auxiliary temperature control component is arranged in the second accommodating space.

[0077] As a preferred solution of the utility model, the third bladder wall 3133 of the deformation bladder 313 in the first auxiliary temperature control component can be fitted with the first side wall 311 or the second side wall 312, that is, one of the third bladder walls 3133 is fitted with the first side wall 311, and the other third bladder wall 3133 is fitted with the second side wall 312.

[0078] For the second temperature control component 320, it also includes a third side wall 321, a fourth side wall 322, a second upper sealing plate 326 and a second front sealing plate 327. The third side wall 321, the fourth side wall 322, the second upper sealing plate 326 and the second front sealing plate 327 are arranged to form a third accommodating space with an opening on the rear side, and the second auxiliary temperature control component is arranged in the third accommodating space.

[0079] As a preferred solution of the utility model, the third capsule wall 3133 of the deformation capsule 313 in the second auxiliary temperature control component can be fitted with the third side wall 321 or the fourth side wall 322, that is, one of the third capsule walls 3133 is fitted with the third side wall 321, and the other third capsule wall 3133 is fitted with the fourth side wall 322.

[0080] The coil assembly 330 includes a refrigerant coil 331, a third upper sealing plate 332 and a third front sealing plate 333. The third upper sealing plate 332, the third front sealing plate 333, the second side wall 312 and the fourth side wall 322 form a fourth accommodating space with an opening on the rear side. The refrigerant coil 331 is arranged in the fourth accommodating space.

[0081] As a preferred solution of the present invention, the refrigerant coil 331 is respectively disposed in close contact with the second side wall 312 and the fourth side wall 322 .

[0082] The temperature regulating device 300 further includes a rear sealing plate 340, which is used to close the rear openings of the second storage space, the third storage space and the fourth storage space. A first pipe hole is provided on the rear sealing plate 340, and the refrigerant coil 331 extends out of the fourth storage space through the first pipe hole.

[0083] Through the above arrangement, the temperature regulating device 300 forms an integrated structure, which is convenient for it to be assembled into the battery module 100 in a modular form, so as to improve its assembly efficiency. Preferably, the first upper sealing plate 316, the second upper sealing plate 326 and the third upper sealing plate 332 are an integrated structure, and the first front sealing plate 317, the second front sealing plate 327 and the third front sealing plate 333 are an integrated structure. In some preferred embodiments, the integrated structure formed by the first upper sealing plate 316, the second upper sealing plate 326 and the third upper sealing plate 332 can be the upper cover of the shell 110, and the integrated structure formed by the first front sealing plate 317, the second front sealing plate 327 and the third front sealing plate 333 can be the front side plate of the shell 110.

[0084] Optionally, at least one wall of the housing 110 is detachable. Figure 2As shown, the housing 110 includes a detachable rear plate 120 , and a second through-tube hole is provided on the rear plate 120 at a position corresponding to the refrigerant coil 331 , and the refrigerant coil 331 extends out of the battery module 100 through the second through-tube hole.

[0085] For the above-mentioned battery module 100, it is applied to an energy storage system, and the energy storage system includes a temperature control device, and the temperature control device is connected to the coil assembly 330, specifically connected to the refrigerant coil 331 in the coil assembly 330, so as to transport refrigerant to the coil assembly 330 to adjust the temperature of the space where each battery cell 200 in the battery module 100 is located, so that it is within a reasonable working range, thereby ensuring the normal operation of the battery cell 200.

[0086] On this basis, the utility model also provides an energy storage system, which includes one or more battery modules 100 as described in Example 1, and the energy storage system also includes a temperature control device, and the refrigerant output pipe of the temperature control device is connected to the coil assembly 330 of the temperature adjustment device 300.

[0087] In order to improve the intelligent operation level of the battery module 100, the energy storage system where the battery module 100 is located includes a central processor, and a temperature sensor is arranged in the space where each battery cell 200 of each battery module 100 is located. The central processor is connected to the temperature sensor to obtain the temperature of the space where each battery cell 200 is located. The central processor is respectively connected to the air conditioner (or other temperature control equipment) and the temperature adjustment device 300 to regulate the operation of the air conditioner (or other temperature control equipment) and the temperature adjustment device 300.

[0088] The central processor is also connected to the battery cell 200 or the battery management unit to obtain the operating status of the battery cell 200, such as the charging and discharging status of the battery cell 200, the idle status of the battery cell 200, etc. Since this is common in existing battery energy storage technologies, this application will not elaborate on it. At the same time, the central processor has a clock module for obtaining information such as time, date, and season.

[0089] Example 2

[0090] This embodiment provides a control method for a battery module in an energy storage system, which is used to control the battery module 100 as described in Embodiment 1.

[0091] The control method comprises:

[0092] Obtain the operating status of the temperature control device connected to the battery module 100, detect the operating status of the battery cells 200 on the left and right sides of each temperature regulating device 300, detect the temperature of the space where each operating battery cell 200 is located, and adjust the inclination state of the deformation capsule 313 in the first temperature control component 310 of the temperature regulating device 300 and / or the deformation capsule 313 in the second temperature control component 320 according to at least one of the operating status of the temperature control device, the operating status of the battery cells 200 on the left and right sides of the temperature regulating device 300, and the temperature of the space where each operating battery cell 200 is located, wherein the inclination state of the deformation capsule 313 includes a first state in which the cross section is inclined upward from left to right, and a second state in which the cross section is inclined downward from left to right.

[0093] By setting the above-mentioned control method, when the battery module 100 needs temperature adjustment, the battery cells 200 on both sides of the temperature adjustment device 300 can be temperature adjusted or only the battery cells 200 on one side can be temperature adjusted. In addition, when the air conditioner stops running, the temperature of the space where the battery cells 200 on both sides of the temperature adjustment device 300 are located can be balanced to effectively ensure the operating state of the air conditioner.

[0094] Specifically, the control method includes:

[0095] Step S1: Obtain the operating state of the temperature control device. If it is in cooling state, execute step S2; if it is in heating state, execute step S3; if it is not running, execute step S4;

[0096] Step S2: Determine whether the battery cells 200 on the left and right sides of each temperature adjustment device 300 are in operation. If yes, adjust the deformation capsule 313 in the first temperature control component 310 to the first state, and adjust the deformation capsule 313 in the second temperature control component 320 to the second state (such as Fig.12 If not, the state of the deformation capsule 313 is adjusted according to the position of the battery cell 200 in the running state, and then the process returns to step S1;

[0097] Step S3: Determine whether the battery cells 200 on the left and right sides of each temperature adjustment device 300 are in operation. If yes, adjust the deformation capsule 313 in the first temperature control component 310 to the second state, and adjust the deformation capsule 313 in the second temperature control component 320 to the first state (such as Fig.11 If not, the state of the deformation capsule 313 is adjusted according to the position of the battery cell 200 in the running state, and then the process returns to step S1;

[0098] Step S4: Detect the temperature of the space where the battery cells 200 are located on the left and right sides of the temperature adjustment device 300, and adjust the state of the deformation capsule 313 in the temperature adjustment device 300 according to the temperature relationship between the left and right sides.

[0099] In this embodiment, the state of the deformation capsule 313 is adjusted according to the operating state of the temperature control device. When in the cooling state, the deformation capsule 313 in the first temperature control component 310 is adjusted to the first state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the second state. The deformation capsule 313 and the heat-conducting medium on the side close to the coil assembly 330 can be cooled and move along the first capsule wall 3131 below to the lowest point on the side close to the space where the corresponding battery cell 200 is located, thereby forming an overall flow cycle, so that the coil assembly 330 and the space where the battery cell 200 is located are moved. The heat exchange is performed, so that the refrigeration refrigerant in the refrigerant coil 331 is used to reduce the temperature of the space where the battery monomer 200 is located, so as to avoid the temperature of the space where the battery monomer 200 is located being too high; when in the heating state, the deformation capsule 313 in the first temperature control component 310 is adjusted to the second state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the first state so that the deformation capsule 313 and the heat-conducting medium on the side close to the coil component 330 are heated and move along the first capsule wall 3131 below to the highest point on the side close to the corresponding battery monomer 200, thereby forming an overall flow Circulate so that the coil assembly 330 and the space where the battery cell 200 is located can exchange heat, so as to use the heating refrigerant in the refrigerant coil 331 to increase the temperature of the space where the battery cell 200 is located, so as to avoid the temperature of the space where the battery cell 200 is located being too low, and to ensure that the working environment temperature of the battery cell 200 is within a reasonable range; when the temperature control device is not in operation, it means that the battery cells 200 are all operating within a suitable operating temperature range. At this time, the heat generated by different battery cells 200 during operation will be different, which will cause the battery cells on both sides of the temperature adjustment device 300 to The temperature of the space where the battery cells 200 are located is uneven. At this time, the state of the deformation capsule 313 can be appropriately adjusted to achieve the balance of the internal temperature of the battery module 100. On the one hand, it can prevent the temperature of the space where some battery cells 200 are located from rising too quickly. On the other hand, it can effectively extend the downtime of the temperature control equipment and reduce the temperature control cost. In addition, in the present application, since the coil assembly 330 is not directly in contact with the space where the battery cells 200 are located, the temperature difference between the space where the battery cells 200 are located and the contact surface of the temperature adjustment device 300 is effectively reduced, thereby effectively reducing the amount of condensed water generated.

[0100] Optionally, the “state of the deformation capsule 313 adjusted according to the position of the battery cell 200 in the running state” in step S2 includes:

[0101] Step S21: if the battery cell 200 on the left side of the temperature adjustment device 300 is in operation and the battery cell 200 on the right side is not in operation, then execute step S22; if the battery cell 200 on the left side of the temperature adjustment device 300 is not in operation and the battery cell 200 on the right side is in operation, then execute step S23; if the battery cells 200 on both sides of the temperature adjustment device 300 are not in operation, then execute step S24;

[0102] Step S22: adjusting the deformation capsule 313 in the first temperature control component 310 to the first state, detecting the temperature T1 of the space where the right battery cell 200 is located, and adjusting the state of the deformation capsule 313 in the second temperature control component 320 according to the magnitude relationship between T1 and the first preset temperature Ta;

[0103] Step S23: adjusting the deformation capsule 313 in the second temperature control component 320 to the second state, detecting the temperature T2 of the space where the right battery cell 200 is located, and adjusting the state of the deformation capsule 313 in the first temperature control component 310 according to the magnitude relationship between T2 and the first preset temperature Ta;

[0104] Step S24: Detect the temperature T3 of the space where the left battery cell 200 is located and the temperature T4 of the space where the right battery cell 200 is located, and adjust the state of the deformation capsule 313 in the first temperature control component 310 according to the size relationship between T3 and the first preset temperature Ta, and adjust the state of the deformation capsule 313 in the second temperature control component 320 according to the size relationship between T4 and the first preset temperature Ta.

[0105] When only the battery cell 200 on the left side of the temperature regulating device 300 is in operation, the deformation capsule 313 in the first temperature control component 310 is adjusted to the first state, so that the deformation capsule 313 and the heat-conducting medium on the side close to the coil assembly 330 can be cooled and move along the first capsule wall 3131 below to the lowest point on the side close to the space where the corresponding battery cell 200 is located, thereby forming an overall flow cycle, so that the coil assembly 330 and the space where the left battery cell 200 is located can exchange heat; when the battery cell 200 on the right side is not in operation, it needs to be The temperature of the environment in which it is located is detected in one step to keep it within a reasonable storage range; the setting in step S23 can achieve the same technical effect, except that step S23 cools the space where the right battery cell 200 is located, and the space where the left battery cell 200 is located needs to be further detected and determined; when the battery cells 200 on both sides of the temperature adjustment device 300 are not in operation, it is necessary to further detect and determine the space where the left and right battery cells 200 are located to ensure that the battery cells 200 are within a reasonable temperature range. The value range of the first preset temperature Ta is 45℃~50℃.

[0106] Among them, the step S22 of “adjusting the state of the deformation capsule 313 in the second temperature control component 320 according to the magnitude relationship between T1 and the first preset temperature Ta” includes:

[0107] Step S221: determine whether T1 is less than or equal to the first preset temperature Ta, if not, execute step S222, if yes, execute step S223;

[0108] Step S222: Adjust the deformation capsule 313 in the second temperature control component 320 to the second state, and return to execute step S221:

[0109] Step S223: adjusting the deformation capsule 313 in the second temperature control assembly 320 to the first state.

[0110] In some cases, the non-operating battery cell 200 is a battery cell 200 that has just been disconnected after overcharging and discharging, and is in a relatively high temperature state. At this time, its temperature may be higher than the first preset temperature Ta. Adjusting the deformation capsule 313 in the second temperature control component 320 to the second state can make the deformation capsule 313 and the heat-conducting medium on the side close to the coil assembly 330 move along the first capsule wall 3131 below to the lowest point on the side of the space close to the right battery cell 200 after cooling, thereby forming an overall flow cycle, so that the coil assembly 330 can cool the battery cell 200 on its right side to ensure the battery The performance of the single cell 200, when T1≤Ta, the deformation capsule 313 in the second temperature control component 320 is adjusted to the first state, and the position of the side where the coil assembly 330 is located is lower, so that the heat-conducting medium forms a local medium flow only near the positions of the corresponding two ends of the deformation capsule 313, and a medium flow dead zone that blocks heat transfer is formed in the middle of the deformation capsule 313, delaying the low temperature in the coil assembly 330 from being transferred to the space where the battery single cell 200 on the right is located, thereby forming a "heat preservation and cold insulation" effect on the battery single cell 200 on the right, thereby improving the refrigeration effect on the battery single cell 200 in operation on the left, and reducing the cost of temperature regulation.

[0111] Among them, the step S23 of “adjusting the state of the deformation capsule 313 in the first temperature control component 310 according to the magnitude relationship between T2 and the first preset temperature Ta” includes:

[0112] Step S231: determine whether T2 is less than or equal to the first preset temperature Ta, if not, execute step S232, if yes, execute step S233;

[0113] Step S232: Adjust the deformation capsule 313 in the first temperature control component 310 to the first state, and return to execute step S231:

[0114] Step S233: adjusting the deformation capsule 313 in the first temperature control component 310 to the second state.

[0115] When T2>Ta, the deformation capsule 313 in the first temperature control component 310 is adjusted to the first state so that the deformation capsule 313 and the heat-conducting medium on the side close to the coil assembly 330 can be cooled and move along the first capsule wall 3131 below to the lowest point on the side of the space close to the left battery cell 200, thereby forming an overall flow cycle, so that the coil assembly 330 can cool the battery cell 200 on its left side to ensure the performance of the battery cell 200. When T2≤Ta, the deformation capsule 313 in the first temperature control component 310 is adjusted to the first state so that the heat-conducting medium on the side close to the coil assembly 330 can move along the first capsule wall 3131 below to the lowest point on the side of the space close to the left battery cell 200, thereby forming an overall flow cycle, so that the coil assembly 330 can cool the battery cell 200 on its left side to ensure the performance of the battery cell 200. The deformation capsule 313 is adjusted to the second state, and the position of the side where the coil assembly 330 is located is lower, so that the heat-conducting medium forms a local medium flow only near the positions of the corresponding two ends of the deformation capsule 313, and a medium flow dead zone that blocks heat transfer is formed in the middle of the deformation capsule 313, delaying the transfer of low temperature in the coil assembly 330 to the space where the left battery cell 200 is located, thereby forming a "heat preservation and cold insulation" effect on the left battery cell 200, improving the refrigeration effect on the running battery cell 200 on the right, and reducing the cost of temperature regulation.

[0116] In step S24, “adjusting the state of the deformation capsule 313 in the first temperature control component 310 according to the magnitude relationship between T3 and the first preset temperature Ta, and adjusting the state of the deformation capsule 313 in the second temperature control component 320 according to the magnitude relationship between T4 and the first preset temperature Ta” includes:

[0117] Step S241: Determine the magnitude relationship between T3 and Ta, and between T4 and Ta, and perform the following operations:

[0118] When T3>Ta, and T4>Ta, the deformation capsule 313 in the first temperature control component 310 is adjusted to the first state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the second state;

[0119] When T3>Ta, and T4≤Ta, the deformation capsule 313 in the first temperature control component 310 is adjusted to the first state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the first state;

[0120] When T3≤Ta, and T4>Ta, the deformation capsule 313 in the first temperature control component 310 is adjusted to the second state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the second state;

[0121] When T3≤Ta and T4≤Ta, the refrigerant valve of the temperature control device connected to the coil assembly 330 in the current temperature adjustment device 300 is closed.

[0122] The effects of the deformation capsule 313 in the first state and the second state have been analyzed in the previous article and will not be repeated here. When T3≤Ta and T4≤Ta, the battery cells 200 on the left and right sides of the current temperature adjustment device 300 are both within a reasonable storage temperature range, and when not in operation, their temperatures can be slowly reduced through heat exchange inside and outside the shell 110 without the need for refrigeration treatment. This can reduce the temperature control cost while ensuring the safety performance of the battery cells 200.

[0123] Optionally, the “state of the deformation capsule 313 adjusted according to the position of the battery cell 200 in the running state” in step S3 includes:

[0124] Step S31: if the battery cell 200 on the left side of the temperature adjustment device 300 is in operation and the battery cell 200 on the right side is not in operation, then execute step S32; if the battery cell 200 on the left side of the temperature adjustment device 300 is not in operation and the battery cell 200 on the right side is in operation, then execute step S33; if the battery cells 200 on both sides of the temperature adjustment device 300 are not in operation, then execute step S34;

[0125] Step S32: adjusting the deformation capsule 313 in the first temperature control component 310 to the second state, detecting the temperature T5 of the space where the right battery cell 200 is located, and adjusting the state of the deformation capsule 313 in the second temperature control component 320 according to the magnitude relationship between T5 and the second preset temperature Tb;

[0126] Step S33: adjusting the deformation capsule 313 in the second temperature control component 320 to the first state, detecting the temperature T6 of the space where the right battery cell 200 is located, and adjusting the state of the deformation capsule 313 in the first temperature control component 310 according to the magnitude relationship between T6 and the second preset temperature Tb;

[0127] Step S34: Detect the temperature T7 of the space where the left battery cell 200 is located and the temperature T8 of the space where the right battery cell 200 is located, and adjust the state of the deformation capsule 313 in the first temperature control component 310 according to the size relationship between T7 and the second preset temperature Tb, and adjust the state of the deformation capsule 313 in the second temperature control component 320 according to the size relationship between T8 and the second preset temperature Tb.

[0128] When only the battery cell 200 on the left side of the temperature regulating device 300 is in operation, the deformation capsule 313 in the first temperature control component 310 is adjusted to the second state, so that the deformation capsule 313 and the heat-conducting medium on the side close to the coil assembly 330 can be heated and move along the upper first capsule wall 3131 to the highest point on the side close to the space where the corresponding battery cell 200 is located, thereby forming an overall flow circulation, so that the coil assembly 330 and the space where the left battery cell 200 is located can exchange heat; when the battery cell 200 on the right side is not in operation, it needs to be The temperature of the environment in which it is located is detected in one step to keep it within a reasonable storage range; the setting in step S33 can achieve the same technical effect, except that step S33 heats the space where the right battery cell 200 is located, and the space where the left battery cell 200 is located needs to be further detected and determined; when the battery cells 200 on both sides of the temperature adjustment device 300 are not in operation, it is necessary to further detect and determine the space where the left and right battery cells 200 are located to ensure that the battery cells 200 are within a reasonable temperature range. The value range of the second preset temperature Tb is -20℃~-15℃.

[0129] Among them, the step S32 of “adjusting the state of the deformation capsule 313 in the second temperature control component 320 according to the magnitude relationship between T5 and the second preset temperature Tb” includes:

[0130] Step S321: determine whether T5 is greater than or equal to the second preset temperature Tb, if not, execute step S322, if yes, execute step S323;

[0131] Step S322: Adjust the deformation capsule 313 in the second temperature control component 320 to the first state, and return to execute step S321:

[0132] Step S323: adjusting the deformation capsule 313 in the second temperature control assembly 320 to the second state.

[0133] In some cases, the temperature of the non-operating battery cell 200 may be lower than the low temperature value of the warning. Adjusting the deformation capsule 313 in the second temperature control component 320 to the first state can make the deformation capsule 313 and the heat-conducting medium on the side close to the coil assembly 330 move along the upper first capsule wall 3131 to the highest point on the side of the space close to the right battery cell 200 after being heated, thereby forming an overall flow circulation, so that the coil assembly 330 can heat the battery cell 200 on its right side to ensure the performance of the battery cell 200. When T5 ≥ Tb , the deformation capsule 313 in the second temperature control component 320 is adjusted to the second state, and the position of the side where the coil assembly 330 is located is higher, so that the heat-conducting medium forms a local medium flow only near the positions of the corresponding two ends of the deformation capsule 313, and a medium flow dead zone that blocks heat transfer is formed in the middle of the deformation capsule 313, delaying the high temperature in the coil assembly 330 from being transferred to the space where the right battery cell 200 is located, thereby forming a "thermal insulation" effect on the right battery cell 200, improving the heating effect on the left battery cell 200 in operation, and reducing the cost of temperature regulation.

[0134] Among them, the step S33 of “adjusting the state of the deformation capsule 313 in the first temperature control component 310 according to the magnitude relationship between T6 and the second preset temperature Tb” includes:

[0135] Step S331: determine whether T6 is greater than or equal to the second preset temperature Tb, if not, execute step S332, if yes, execute step S333;

[0136] Step S332: Adjust the deformation capsule 313 in the first temperature control component 310 to the second state, and return to execute step S331:

[0137] Step S333: adjusting the deformation capsule 313 in the first temperature control component 310 to the first state.

[0138] When T6<Tb, the deformation capsule 313 in the first temperature control component 310 is adjusted to the second state so that the deformation capsule 313 and the heat-conducting medium on the side close to the coil assembly 330 can move along the upper first capsule wall 3131 to the highest point on the side of the space close to the left battery cell 200 after being heated, thereby forming an overall flow circulation, so that the coil assembly 330 can heat the battery cell 200 on its left side to ensure the performance of the battery cell 200. When T6≥Tb, the deformation capsule 313 in the first temperature control component 310 is adjusted to the second state so that the heat-conducting medium on the side close to the coil assembly 330 can move along the upper first capsule wall 3131 to the highest point on the side of the space close to the left battery cell 200, thereby forming an overall flow circulation, so that the coil assembly 330 can heat the battery cell 200 on its left side to ensure the performance of the battery cell 200. The deformation capsule 313 is adjusted to the first state, and the position of the side where the coil assembly 330 is located is higher, so that the heat-conducting medium forms a local medium flow only near the positions of the corresponding two ends of the deformation capsule 313, and a medium flow dead zone that blocks heat transfer is formed in the middle of the deformation capsule 313, delaying the high temperature in the coil assembly 330 from being transferred to the space where the left battery cell 200 is located, thereby forming a "thermal insulation" effect on the left battery cell 200, improving the heating effect on the running battery cell 200 on the right, and reducing the cost of temperature regulation.

[0139] In step S34, “adjusting the state of the deformation capsule 313 in the first temperature control component 310 according to the magnitude relationship between T7 and the second preset temperature Tb, and adjusting the state of the deformation capsule 313 in the second temperature control component 320 according to the magnitude relationship between T8 and the second preset temperature Tb” includes:

[0140] Step S341: Determine the magnitude relationship between T7 and Tb, and between T8 and Tb, and perform the following operations:

[0141] When T7<Tb, and T8<Tb, the deformation capsule 313 in the first temperature control component 310 is adjusted to the second state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the first state;

[0142] When T7<Tb, and T8≥Tb, the deformation capsule 313 in the first temperature control component 310 is adjusted to the second state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the second state;

[0143] When T7≥Tb, and T8<Tb, the deformation capsule 313 in the first temperature control component 310 is adjusted to the first state, and the deformation capsule 313 in the second temperature control component 320 is adjusted to the first state;

[0144] When T7 ≥ Tb and T8 ≥ Tb, the refrigerant valve of the temperature control device connected to the coil assembly 330 in the current temperature adjustment device 300 is closed.

[0145] When T7 ≥ Tb and T8 ≥ Tb, the battery cells 200 on the left and right sides of the current temperature adjustment device 300 are within a reasonable storage temperature range and do not need to be heated, thereby reducing the temperature control cost while ensuring the safety of the battery cells 200.

[0146] The temperature of the space where the battery cell 200 is located on the left side of the temperature adjustment device 300 is recorded as Tm, and the temperature of the space where the battery cell 200 is located on the right side of the temperature adjustment device 300 is recorded as Tn. In step S4, "adjusting the state of the deformation capsule 313 in the temperature adjustment device 300 according to the temperature relationship between the left and right sides" includes:

[0147] Step S41: Determine whether Tm-Tn> the third preset temperature Tc, if yes, proceed to step S42; if no, proceed to step S43;

[0148] Step S42: adjusting the deformation capsule 313 in the first temperature control component 310 to the first state, adjusting the deformation capsule 313 in the second temperature control component 320 to the first state, and then returning to step S1;

[0149] Step S43: Determine whether Tm-Tn<the fourth preset temperature Td, if so, proceed to step S44; if not, return to step S1;

[0150] Step S44: adjusting the deformation capsule 313 in the first temperature control component 310 to the second state, and adjusting the deformation capsule 313 in the second temperature control component 320 to the second state.

[0151] Among them, the value of the third preset temperature Tc is 0℃~2℃, and the value of the fourth preset temperature Td is -2℃~0℃. It should be noted that when Td≤Tm-Tn≤Tc, it means that the temperature difference of the space where the battery cells 200 on the left and right sides of the temperature adjustment device 300 are located is very small, and the temperature of the battery cells 200 in the battery module 100 is basically in a balanced state, and no additional adjustment is required. When Tm-Tn>Tc, the temperature on the left side is higher. At this time, the deformation capsule 313 in the first temperature control component 310 and the second temperature control component 320 are adjusted to the first state, and the heat in the first temperature control component 310 can be firstly transferred to the refrigerant in the coil component 330, and then transferred to the right side through the refrigerant, so that the space where the battery cells 200 on the left and right sides of the temperature adjustment device 300 are located maintains a balanced temperature, avoiding the problem of the space temperature of the battery cells 200 on one side being too high or too low, which is conducive to reducing the use time of the temperature control device and reducing the temperature control cost.

[0152] Although the utility model is disclosed as above, the utility model is not limited thereto. In the description of this specification, the description of reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, so the scope of protection of the utility model should be based on the scope defined by the claims.

Claims

1. A battery module, characterized in that: include: A housing (110), the housing (110) being used to form a first accommodation space, the first accommodation space being used to at least accommodate a battery cell (200); A battery cell (200), wherein there are two or more battery cells (200), and the battery cells (200) are arranged in a first accommodation space of the housing (110); a temperature regulating device (300), the temperature regulating device (300) being arranged in the first accommodation space of the housing (110), and one temperature regulating device (300) being arranged between at least two adjacent battery cells (200); The temperature regulating device (300) comprises a first temperature control component (310), a second temperature control component (320) and a coil component (330); the coil component (330) is arranged between the first temperature control component (310) and the second temperature control component (320); the first temperature control component (310) is arranged on the left side of the coil component (330); the second temperature control component (320) is arranged on the right side of the coil component (330); the coil component (330) is capable of circulating a temperature control refrigerant; the first temperature control component (310) comprises a first auxiliary temperature control component; the first auxiliary temperature control component comprises a deformation capsule (313) and a first lifting device (314); the first lifting device (314) is capable of moving up and down in a vertical direction; the first lifting device (314) and the first auxiliary The second temperature control component (320) is connected to the deformation capsule (313) of the auxiliary temperature control component, the second temperature control component (320) includes a second auxiliary temperature control component, the second auxiliary temperature control component includes another deformation capsule (313) and a second lifting device (324), the second lifting device (324) is connected to the deformation capsule (313) of the second auxiliary temperature control component, the second lifting device (324) can move up and down in the vertical direction, the deformation capsule (313) has a hollow capsule cavity (3135), and the capsule cavity (3135) is filled with a heat-conducting medium. The deformation capsule (313) can be deformed as the first lifting device (314) or the second lifting device (324) is lifted and lowered. In the direction from left to right, the cross-section of the deformation capsule (313) can be deformed to extend obliquely upward or obliquely downward.

2. The battery module according to claim 1, characterized in that: The first lifting device (314) includes a first lifting member (3141) and a second lifting member (3142), wherein the first lifting member (3141) is connected to the left side of the deformation capsule (313) in the first temperature control component (310), and the second lifting member (3142) is connected to the right side of the deformation capsule (313) in the first temperature control component (310).

3. The battery module according to claim 2, characterized in that: The first lifting member (3141) moves upward relative to the second lifting member (3142), and the cross-section of the deformation capsule (313) in the first temperature control component (310) is deformed from left to right to extend obliquely downward; the second lifting member (3142) moves upward relative to the first lifting member (3141), and the cross-section of the deformation capsule (313) in the first temperature control component (310) is deformed from left to right to extend obliquely upward.

4. The battery module according to claim 3, characterized in that: The first auxiliary temperature control component includes a first lifting component (315), and the first lifting component (315) has a lifting device that can be raised and lowered, including a first lifting device (3151) and a second lifting device (3153), the first lifting device (3151) is connected to the bottom end of the first lifting member (3141), and the second lifting device (3153) is connected to the bottom end of the second lifting member (3142).

5. The battery module according to claim 1, characterized in that: The second lifting device (324) includes a third lifting member (3241) and a fourth lifting member (3242), wherein the third lifting member (3241) is connected to the right side of the deformation capsule (313) in the second temperature control component (320), and the fourth lifting member (3242) is connected to the left side of the deformation capsule (313) in the second temperature control component (320).

6. The battery module according to claim 5, characterized in that: The third lifting member (3241) moves upward relative to the fourth lifting member (3242), and the cross-section of the deformation capsule (313) in the second temperature control component (320) is deformed from left to right to extend obliquely upward; the fourth lifting member (3242) moves upward relative to the third lifting member (3241), and the cross-section of the deformation capsule (313) in the second temperature control component (320) is deformed from left to right to extend obliquely downward.

7. The battery module according to claim 6, characterized in that: The second auxiliary temperature control component includes a second lifting component (325), and the second lifting component (325) has a lifting device that can be raised and lowered, including a third lifting device (3251) and a fourth lifting device (3253), the third lifting device (3251) is connected to the bottom end of the third lifting member (3241), and the fourth lifting device (3253) is connected to the bottom end of the fourth lifting member (3242).

8. The battery module according to any one of claims 1 to 7, characterized in that: The first auxiliary temperature control component and the second auxiliary temperature control component respectively include a plurality of deformation capsules (313) arranged in sequence from bottom to top, wherein the deformation capsule (313) is a rectangular parallelepiped in an undeformed state, and the deformation capsule (313) has two first capsule walls (3131) arranged oppositely, two second capsule walls (3132) arranged oppositely, and two third capsule walls (3133) arranged oppositely, and the deformation capsule (313) is connected to the first lifting device (314) or the second lifting device (324) via the third capsule wall (3133).

9. The battery module according to claim 8, characterized in that: For the deformable capsule (313) in a deformed state, the minimum angle K between the first capsule wall (3131) and the third capsule wall (3133) is 55°-65°, and the maximum ratio between the width W of the first capsule wall (3131) and the height H of the third capsule wall (3133) is 1.5-2.5:

1.

10. An energy storage system, characterized in that: Comprising the battery module as claimed in any one of claims 1 to 9.

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