Hydraulic heat management module for a cooling circuit of an electric vehicle, cooling circuit and electric vehicle with such a hydraulic module

Description

[0001] The invention relates to the field of cooling circuits for electric vehicles. More specifically, the invention relates to a hydraulic thermal management module for electric vehicle cooling circuits and to a vehicle incorporating such a hydraulic thermal management module.

[0002] Today, the technologies implemented in the cooling circuits of electric vehicles require the development of a dedicated solution for each respective electric vehicle.

[0003] In order to limit development costs and restrict the number of components in stock, it is desirable to have a cross-cutting cooling technology, that is to say, one that can be transposed from one electric vehicle model to another.

[0004] Furthermore, the prior art is known from document EP3925814A2.

[0005] The invention aims to provide a hydraulic thermal management module for cross-functional use, meaning it can be easily transferred from one cooling circuit to another, and therefore from one electric vehicle to another. The invention also provides a cooling circuit for electric vehicles, as well as an electric vehicle, equipped with such a hydraulic thermal management module. The invention further proposes a method for using such a cooling circuit.

[0006] To achieve this objective, the invention thus proposes a hydraulic thermal management module for an electric vehicle cooling circuit comprising a first hydraulic pump and a second hydraulic pump, ten interfaces forming fluid communication channels.

[0007] In this hydraulic thermal management module: a first interface is connected in fluid communication to an inlet of the first hydraulic pump, an output of the first hydraulic pump is connected in fluid communication to a second interface; a third interface is connected in fluid communication to an inlet of the second hydraulic pump, an output of the second hydraulic pump is connected in fluid communication to a fourth interface; and: a fifth interface, a sixth interface, a seventh interface, an eighth interface, a ninth interface, a tenth interface being further defined among the ten interfaces; at least the fifth interface, the seventh interface, the eighth interface, the ninth interface and the tenth interface being individually actuable in opening and closing.

[0008] In addition, the hydraulic thermal management module allows for four control configurations, in which: In a first control configuration: the fifth, seventh, and eighth interfaces are open; the ninth and tenth interfaces are closed; the fifth interface is in fluid communication with the inlet of the second hydraulic pump; the sixth interface is connected in fluid communication to the seventh interface; the eighth interface is also connected in fluid communication to the inlet of the first hydraulic pump; in a second control configuration: the eighth interface is open; the fifth and seventh interfaces are closed; the ninth and tenth interfaces are closed; the sixth interface is connected in fluid communication to the inlet of the second hydraulic pump; the eighth interface is connected in fluid communication to the inlet of the first hydraulic pump;In a third control configuration: the fifth and seventh interfaces are closed, the ninth and tenth interfaces are open; the eighth interface is closed; the fifth interface is open and in fluid communication with the inlet of the second hydraulic pump; the sixth interface is connected in fluid communication to the seventh interface; the ninth interface is in fluid communication with the tenth interface; in a fourth control configuration: the ninth and tenth interfaces are open; the fifth, seventh, and eighth interfaces are closed; the sixth interface is connected in fluid communication to the inlet of the second hydraulic pump; the ninth interface is in fluid communication with the tenth interface.

[0009] Thanks to its four control configurations, the hydraulic thermal management module offers a cross-cutting solution that allows both the limitation of costs (development, storage, management) and the diversity of cooling circuits for electric vehicles.

[0010] Advantageously, in the thermal management hydraulic module, the first interface, the second interface, the third interface, the fourth interface and the sixth interface are all open in each of the first, second, third and fourth pilot configurations.

[0011] This hydraulic thermal management module can be reused identically on a wide range of cooling circuits and / or electric vehicles. Its various configurations allow for adjustment according to the thermal requirements of the system in which it is implemented.

[0012] Advantageously, in the thermal management hydraulic module, the fifth interface is connected via fluid communication to an eleventh interface.

[0013] The invention also relates to an electric vehicle cooling circuit, comprising a hydraulic thermal management module as described above.

[0014] Advantageously, in the aforementioned electric vehicle cooling circuit: the first interface, the second interface, the eighth interface, the ninth interface, the tenth interface and the first hydraulic pump may belong to a first cooling sub-circuit of said cooling circuit; the third interface, the fourth interface, the fifth interface, the sixth interface, the seventh interface and the second hydraulic pump may belong to a second cooling sub-circuit of said cooling circuit.

[0015] The invention further relates to a method of using the aforementioned electric vehicle cooling circuit, in which glycol water is used in the first cooling sub-circuit of said cooling circuit, and a dielectric liquid or glycol water is used in the second cooling sub-circuit of said cooling circuit.

[0016] It is therefore possible to use the aforementioned hydraulic thermal management module both with a combination of glycol water in a first cooling sub-circuit and dielectric fluid in a second cooling circuit, or with glycol water in each of the two cooling sub-circuits integrating the hydraulic thermal management module.

[0017] The invention further relates to an electric vehicle comprising the aforementioned hydraulic thermal management module or a cooling circuit featuring the aforementioned hydraulic thermal management module.

[0018] The invention will be further detailed by describing non-limiting embodiments, and based on the accompanying figures illustrating variants of the invention, in which: [ Fig. 1 [ schematically illustrates a hydraulic thermal management module in a first control configuration; [ Fig. 2 ] schematically illustrates the hydraulic thermal management module of the Fig. 1 in a second piloting configuration; Fig. 3 ] schematically illustrates the hydraulic thermal management module of the Fig. 1 in a third piloting configuration; Fig. 4 ] schematically illustrates the hydraulic thermal management module of the Fig. 1 in a fourth piloting configuration.

[0019] A hydraulic thermal management module 10 for the cooling circuit 5 of an electric vehicle 3 is illustrated in Fig. 1 à 4 .

[0020] The thermal management hydraulic module 10 includes a first hydraulic pump 20 and a second hydraulic pump 21, as well as eleven interfaces A, B1, B2, D, E, F, G, H, I, J, K, each forming a fluid communication channel.

[0021] In the thermal management hydraulic module 10, a first interface H is connected in fluid communication to an input 20a of the first hydraulic pump 20, an output 20b of the first hydraulic pump 20 is connected in fluid communication to a second interface K.

[0022] Furthermore, a third interface I is connected in fluid communication to an input 21a of the second hydraulic pump 21, an output 21b of the second hydraulic pump 21 is connected in fluid communication to a fourth interface F.

[0023] In addition, a fifth interface A, a sixth interface B1, a seventh interface B2, an eighth interface D, a ninth interface E, a tenth interface G and an eleventh interface J are defined among the eleven interfaces A, B1, B2, D, E, F, G, H, I, J, K.

[0024] Among the eleven interfaces A, B1, B2, D, E, F, G, H, I, J, K, at least the fifth interface A, the seventh interface B2, the eighth interface D, the ninth interface E and the tenth interface G are individually operable in opening and closing.

[0025] The hydraulic thermal management module 10 allows four control configurations P1, P2, P3 and P4, illustrated individually in the following diagrams: Fig. 1 à 4 .

[0026] In the first piloting configuration P1 ( Fig. 1 ) : The fifth interface A, the seventh interface B2 and the eighth interface D are open; the ninth interface E and the tenth interface G are closed; the fifth interface A is in fluid communication with the inlet 21a of the second hydraulic pump 21; the sixth interface B1 is connected in fluid communication to the seventh interface B2; the eighth interface D is also connected in fluid communication to the inlet 20a of the first hydraulic pump 20.

[0027] In the second P2 piloting configuration ( Fig. 2 ) : the eighth interface D is open; the fifth interface A, the seventh interface B2 are closed, the ninth interface E and the tenth interface G are closed; the sixth interface B1 is connected in fluid communication to the inlet 21a of the second hydraulic pump 21; the eighth interface D is connected in fluid communication to the inlet 20a of the first hydraulic pump 20.

[0028] In the third piloting configuration P3 ( Fig. 3 ) : the fifth interface A, the seventh interface B2 are closed, the ninth interface E and the tenth interface G are open; the eighth interface D is closed; the fifth interface A is open and in fluid communication with the inlet 21a of the second hydraulic pump 21; the sixth interface B1 is connected in fluid communication to the seventh interface B2; the ninth interface E and the tenth interface G are open, and, the ninth interface E is in fluid communication with the tenth interface G.

[0029] In the fourth piloting configuration P4 ( Fig. 4 ) : the ninth interface E and the tenth interface G are open; the fifth interface A, the seventh interface B2 and the eighth interface D are closed; the sixth interface B1 is connected in fluid communication to the inlet 21a of the second hydraulic pump 21; the ninth interface E and the tenth interface G are open, and, the ninth interface E is in fluid communication with the tenth interface G.

[0030] In the thermal management hydraulic module 10, the first interface H, the second interface K, the third interface I, the fourth interface F and the sixth interface B1 are preferably all open in each of the first, second, third and fourth pilot configurations P1, P2, P3, P4.

[0031] In the hydraulic thermal management module 10 described above, preferably the fifth interface A is connected via fluid communication to the eleventh interface J. Preferably, the eleventh interface J is also open in each of the first to fourth pilot configurations P1 to P4. The eleventh interface J can, for example, be configured to be connected to a degassing box (not shown).

[0032] The hydraulic thermal management module 10 described above is also particularly suitable for implementation in the aforementioned cooling circuit 5 of the electric vehicle 3.

[0033] As illustrated in Fig. 1 , in the cooling circuit 5 of the electric vehicle 3: the first interface H, the second interface K, the eighth interface D, the ninth interface E, the tenth interface G and the first hydraulic pump 20 belong to a first cooling sub-circuit LT of said cooling circuit 5; the third interface I, the fourth interface F, the fifth interface A, the sixth interface B1, the seventh interface B2 and the second hydraulic pump 21 belong to a second cooling sub-circuit VLT, LT, COMB of said cooling circuit 5.

[0034] According to a method of using the cooling circuit 5 of the electric vehicle 3, glycol water is used in the first cooling sub-circuit LT.

[0035] Furthermore, in a first variant of the operating method, a dielectric fluid is used in the second cooling sub-circuit VLT, HT, COMB of said cooling circuit 5. In a second variant of the operating method, glycol water is used in the second cooling sub-circuit VLT, LT, COMB of said cooling circuit 5. The term "used" associated with the dielectric fluid or glycol water is to be understood as

[0036] The cooling circuit 5 and / or the electric vehicle 3 may, for example, include one or more of each of the following components: Charger, Front electric machine, Rear electric machine, Glycol water heat exchanger, dielectric fluid and / or refrigerant fluid, Battery cooling sub-circuit, Heat pump, Air heater or cabin heating device, Etc.

[0037] An electric vehicle 3 could therefore advantageously include a hydraulic thermal management module 10 mentioned above or the cooling circuit 5 mentioned above.

Claims

1. Hydraulic thermal management module (10) for cooling circuit (5) of electric vehicle (3) comprising a first hydraulic pump (20) and a second hydraulic pump (21), ten interfaces (A, B1, B2, D, E, F, G, H, I, K) forming fluid communication channels; wherein: - a first interface (H) is connected in fluid communication to an entry (20a) of the first hydraulic pump (20), an exit (20b) of the first hydraulic pump (20) is connected in fluid communication to a second interface (K); - a third interface (I) is connected in fluid communication to an entry (21a) of the second hydraulic pump (21), an exit (21b) of the second hydraulic pump (21) is connected in fluid communication to a fourth interface (F); and wherein: - a fifth interface (A), a sixth interface (B1), a seventh interface (B2), an eighth interface (D), a ninth interface (E), a tenth interface (G) further being defined by the ten interfaces (A, B1, B2, D, E, F, G, H, I, K); - at least the fifth interface (A), the seventh interface (B 2), the eighth interface (D), the ninth interface (E) and the tenth interface (G) being individually operable in opening and closing; the hydraulic thermal management module allowing four control configurations, in which: - in a first piloting configuration (P 1): - the fifth interface (A), the seventh interface (B2) and the eighth interface (D) are open; - the ninth interface (E) and the tenth interface (G) are closed; - the fifth interface (A) is in fluid communication with the entry (21 a) of the second hydraulic pump (21); - the sixth interface (B 1) is connected in fluid communication to the seventh interface (B 2); - the eighth interface (D) is also connected in fluid communication to the entry (20 a) of the first hydraulic pump (20); - in a second piloting configuration (P2): - the eighth interface (D) is open; - the fifth interface (A), the seventh interface (B2) are closed, the ninth interface (E) and the tenth interface (G) are closed; - the sixth interface (B 1) is connected in fluid communication to the entry (21 a) of the second hydraulic pump (21); - the eighth interface (D) is connected in fluid communication to the entry (20 a) of the first hydraulic pump (20); - in a third piloting configuration (P3): - the fifth interface (A), the seventh interface (B2) are closed, the ninth interface (E) and the tenth interface (G) are open; - the eighth interface (D) is closed; - the fifth interface (A) is open and in fluid communication with the entry (21 a) of the second hydraulic pump (21); - the sixth interface (B 1) is connected in fluid communication to the seventh interface (B 2); - the ninth interface (E) is in fluid communication with the tenth interface (G); - in a fourth piloting configuration (P4): - the ninth interface (E) and the tenth interface (G) are open; - the fifth interface (A), the seventh interface (B2) and the eighth interface (D) are closed; - the sixth interface (B 1) is connected in fluid communication to the entry (21 a) of the second hydraulic pump (21); - the ninth interface (E) is in fluid communication with the tenth interface (G).

2. The hydraulic thermal management module (10) according to claim 1, wherein the first interface (H), the second interface (K), the third interface (I), the fourth interface (F) and the sixth interface (B 1) are all open in each of the first, second, third and fourth control configurations (P 1, P 2, P 3, P 4).

3. Hydraulic thermal management module (10) according to any one of claims 1 or 2, characterised in that the fifth interface (A) is connected in fluid communication to an eleventh interface (J).

4. Cooling circuit (5) of an electric vehicle (3), comprising a hydraulic thermal management module (10) according to any one of claims 1 to 3.

5. The cooling circuit (5) of an electric vehicle (3) according to claim 4, wherein: - the first interface (H), the second interface (K), the eighth interface (D), the ninth interface (E), the tenth interface (G) and the first hydraulic pump (20) belong to a first cooling sub-circuit of said cooling circuit (5); - the third interface (I), the fourth interface (F), the fifth interface (A), the sixth interface (B 1), the seventh interface (B 2) and the second hydraulic pump (21) belong to a second sub-circuit for cooling said cooling circuit (5).

6. The method for using the cooling circuit (5) of an electric vehicle (3) according to claim 5, wherein glycol water is used in the first cooling subcircuit of said cooling circuit (5), and a dielectric liquid or glycol water is used in the second cooling subcircuit of said cooling circuit (5).

7. Electric vehicle (3) comprising a hydraulic thermal management module (10) according to any one of claims 1 to 3 or a cooling circuit (5) having a hydraulic thermal management module (10) according to any one of claims 1 to 3.